20-F

As filed with the Securities and Exchange Commission on April 11, 2023

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM

20-F

(Mark One)

☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2022

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from   to

OR

☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report

Commission file number: 001-40241

LAVA Therapeutics N.V.

(Exact Name of Registrant as Specified in its Charter)

Not Applicable

(Translation of Registrant’s Name into English)

The Netherlands

(Jurisdiction of Incorporation or Organization)

Yalelaan 62

3584 CM Utrecht, The Netherlands

+31 85 016 3100

(Address of principal executive offices)

Lava Therapeutics, Inc.

520 Walnut St, Suite 1150

Philadelphia, PA 19106

ir@lavatherapeutics.com

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act

	Trading	Name of each exchange
Title of each class	Symbol(s)	on which registered
Common shares, par value $0.14 per share	LVTX	NASDAQ Global Select Market

Securities registered or to be registered pursuant to Section 12(g) of the Act: None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

As of December 31, 2022, the issuer had 26,289,087 common shares outstanding.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.Yes ◻ No ⌧

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. Yes ◻ No ⌧

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ⌧ No ◻

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ⌧ No ◻

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company.

Large accelerated filer	◻	Accelerated filer	◻
Non-accelerated filer	⌧	Emerging growth company	☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ◻

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ◻

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP ◻ International Financial Reporting Standards as issued by the International Accounting Standards Board ⌧ Other ◻

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow. ◻ Item 17 ◻ Item 18

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ⌧

TABLE OF CONTENTS

			Page
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
PART I
	Item 1.	Identity of Directors, Senior Management and Advisors	4
	Item 2.	Offer Statistics and Expected Timetable	4
	Item 3.	Key Information	4
	Item 4.	Information on the Company	53
	Item 4A.	Unresolved Staff Comments	84
	Item 5.	Operating and Financial Review and Prospects	84
	Item 6.	Directors, Senior Management and Employees	94
	Item 7.	Major Shareholders and Related Party Transactions	102
	Item 8.	Financial Information	105
	Item 9.	The Offer and Listing	105
	Item 10.	Additional Information	106
	Item 11.	Quantitative and Qualitative Disclosures about Market Risks	116
	Item 12.	Description of Securities Other than Equity Securities	116
PART II
	Item 13.	Defaults, Dividend Arrearages and Delinquencies	116
	Item 14.	Material Modifications to the Rights of Security Holders and Use of Proceeds	116
	Item 15.	Controls and Procedures	117
	Item 16.	Items 16A – 16I	119
PART III
	Item 17.	Financial Statements	121
	Item 18.	Financial Statements	122
	Item 19.	Exhibits	122

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Special Note Regarding Forward-Looking Statements

This annual report contains statements that constitute forward-looking statements. Many of the forward-looking statements contained in this annual report can be identified by the use of forward-looking words such as “anticipate,” “believe,” “could,” “expect,” “should,” “plan,” “intend,” “estimate” and “potential,” among others. Forward-looking statements appear in a number of places in this annual report and include, but are not limited to, statements regarding our intent, belief or current expectations. Forward-looking statements are based on our management’s beliefs and assumptions and on information currently available to our management. Such statements are subject to risks and uncertainties, and actual results may differ materially from those expressed or implied in the forward-looking statements due to various important factors, including, but not limited to, those identified under the section titled “Risk Factors” in Item 3 of this annual report. Forward-looking statements include, but are not limited to, statements about:

● our operations as a biotechnology company with limited operating history and a history of operating losses;

● our plans to develop and commercialize our product candidates;

● the initiation, timing, progress and results of our current and future preclinical studies and clinical trials and our research and development programs;

● our ability to successfully acquire or in-license additional product candidates on reasonable terms;

● our ability to maintain and establish collaborations or obtain additional funding;

● our ability to obtain regulatory approval of our current and future product candidates;

● our expectations regarding the potential market size and the rate and degree of market acceptance of our product candidates;

● our continued reliance on third parties to conduct clinical trials of our product candidates and manufacture our product candidates for preclinical studies and clinical trials;

● our ability to fund our working capital requirements and expectations regarding the sufficiency of our capital resources;

● the implementation of our business model and strategic plans for our business and product candidates;

● our ability to establish sales, marketing and distribution capabilities;

● our ability to enter into and maintain collaborations with third parties for the development or commercialization of our product candidates;

● our intellectual property position and the duration of our patent rights;

● our estimates regarding expenses, future revenues, capital requirements and our needs for additional financing;

● the impact of government laws and regulations on our business;

● our need to hire additional personnel and our ability to attract and retain such personnel;

● our ability to compete in the markets we serve;

● developments relating to our competitors and our industry; and

● other risk factors discussed under “Risk Factors.”

Forward-looking statements speak only as of the date they are made, and we do not undertake any obligation to update them in light of new information or future developments or to release publicly any revisions to these statements in order to reflect later events or circumstances or to reflect the occurrence of unanticipated

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events, except to the extent required by applicable law. In addition, there may be adverse effects on our business condition and results from general economic and market conditions and overall fluctuations in the United States and international equity markets, including deteriorating market conditions due to investor concerns regarding inflation and hostilities between Russia and Ukraine.

ITEM 1.IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS

Not required for annual reports.

ITEM 2.OFFER STATISTICS AND EXPECTED TIMETABLE

Not required for annual reports.

ITEM 3.Key Information

A. [Reserved]

B. Capitalization and indebtedness

Not required for annual reports.

C. Reasons for the offer and use of proceeds

Not required for annual reports.

D. Risk factors

Investing in our common shares involves a high degree of risk. You should carefully consider the risks described below, as well as the other information in this annual report, including our financial statements and the related notes and “Item 5: Operating and Financial Review and Prospects.” The occurrence of any of the events or developments described below could harm our business, financial condition, results of operations and prospects. In such an event, the market price of our common shares could decline, and you may lose all or part of your investment.

Summary Risk Factors

Risks related to our financial position and capital needs

● We anticipate incurring substantial operating losses for the foreseeable future and may never achieve or maintain profitability.

● Adverse developments affecting financial institutions, companies in the financial services industry or the financial services industry generally, such as actual events or concerns involving bank failures, liquidity, defaults or non-performance, could adversely affect our operations and liquidity.

● We have a limited operating history, which makes it difficult to assess our future viability.

● We will require substantial additional funding to finance our operations to complete the development and commence commercialization of our product candidates.

Risks related to the development and commercialization of our product candidates

● Our product candidates, Gammabody™ platform and related technologies are novel approaches to cancer treatment, which makes it difficult to predict the time and cost of development and subsequent regulatory approval.

● We are dependent on the successful clinical development, regulatory approval and commercialization of our product candidates. Our product candidates could fail to demonstrate safety and efficacy at any stage of development, which could prevent or delay us from obtaining required regulatory approvals and commercializing our product candidates.

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● Success in preclinical studies or early-stage clinical trials may not be indicative of results in future clinical trials.

● We have in the past, and in the future may enter into collaborations with third parties to conduct, supervise and monitor our preclinical studies and clinical trials, and if those third parties perform in an unsatisfactory manner, it may harm our business and delay or impair our ability to obtain regulatory approval or otherwise commercialize our product candidates.

● If we encounter difficulties in enrolling, qualifying or retaining patients in our clinical trials, our clinical development activities could be delayed or otherwise adversely affected.

● Serious adverse events or undesirable or unexpected side effects of our product candidates may be identified during development or after approval, which could lead to the discontinuation of our clinical development programs, refusal by regulatory authorities to approve our product candidates or, if discovered following marketing approval, revocation of marketing authorizations or limitations on the use of our product candidates thereby limiting the commercial potential of such product candidate.

● Interim, “top-line” and preliminary data from our clinical trials that we announce or publish from time to time may change as more patient data becomes available and are subject to audit and verification procedures that could result in material changes in the final data.

● We face significant competition, and many of our competitors have substantially greater experience and resources than we have.

Risks related to manufacturing and reliance on third parties

● The manufacture of biotechnology products is complex, and manufacturers often encounter difficulties in production, which could negatively affect our ability to develop or commercialize our product candidates.

● To date, we have relied on a single-source supplier for bulk drug substance and drug manufacturing for certain of our product candidates. The loss of this supplier or its failure to supply us with bulk drug substance on a timely basis for such product candidate could impair our ability to develop our product candidate or otherwise delay the development process, which could adversely affect our business.

● We are dependent on third-party service providers to perform critical activities related to the research, development and manufacturing of our product candidates. If these third-party service providers fail to perform, our development program could be delayed with materially adverse effects on our business, financial condition, results of operations and prospects.

Risks related to our intellectual property

● If we are unable to obtain and maintain patent and other intellectual property protection for our product candidates and technology, or if the scope of protection obtained is not sufficiently broad or robust, our competitors could develop and commercialize products and technology similar or identical to ours, and our ability to successfully commercialize our product candidates and technology may be adversely affected.

● Obtaining and maintaining our patent rights depends on compliance with various procedural, document submission, fee payment and other requirements imposed by government patent agencies and we may be unsuccessful in complying with such requirements.

● Patent terms may be inadequate to protect our competitive position on our product candidates for an adequate amount of time.

● Even if we are successful in obtaining and maintaining robust intellectual property rights, such protections do not necessarily address all potential threats to the competitive advantages maintained by our business.

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Risks related to our business operations, employee matters and managing growth

● Our business and operations may be adversely affected by economic downturns, inflation, increases in interest rates, natural disasters, public health crises, political crises, geopolitical events, such as the crisis in Ukraine or other macroeconomic conditions, which could negatively impact our business and financial performance.

● If our collaboration agreement with Seagen Inc. (Seagen) is terminated or if Seagen materially breaches its obligations thereunder, or it the collaboration does not progress due to manufacturing issues, clinical trial results or for other reasons, our reputation could be impacted or business, prospects, operating results, and financial conditions could be materially harmed.

● We may expand our organization, and we may experience difficulties in managing this growth.

● There are risks inherent in our business that may subject us to potential product liability suits and other claims.

● If the security of the personal information that we collect, store or process is compromised, we may be exposed to liability and loss of business.

● We may be classified as a passive foreign investment company (PFIC) for United States (U.S.) federal income tax purposes, which could result in adverse U.S. federal income tax consequences to U.S. investors in the common shares.

Risks related to regulatory compliance

● The regulatory approval process is lengthy and time-consuming, and we may experience significant delays in the clinical development and regulatory approval of our product candidates.

● Even if a product candidate receives marketing approval, it may fail to achieve market acceptance by physicians, patients, third-party payors or others in the medical community.

Risks related to ownership of our common shares

● The market price of our common shares has been and may continue to be volatile.

● Shareholders may not be able to exercise pre-emption rights and, as a result, may experience substantial dilution upon future issuances of common shares.

● We have identified material weaknesses in our internal control over financial reporting.

Risks related to our financial position and capital needs

We are a clinical-stage immuno-oncology company and have incurred significant operating losses since inception. We anticipate that we will continue to incur substantial operating losses for the foreseeable future and may never achieve or maintain profitability.

We are a clinical-stage immuno-oncology company and have incurred significant operating losses since inception. Our net loss was $31.9 million and $42.4 million for the years ended December 31, 2022, and 2021, respectively. As of December 31, 2022, we had an accumulated deficit of $108.1 million. To date, we have recognized minimal license revenues with no significant milestone revenues expected to be recognized over the next 12 months, and we have not recorded any revenues from product sales. We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future.

Since inception, we have devoted substantially all of our efforts to preclinical and clinical research and development of our product candidates and technology, organizing and staffing our company, business planning, raising capital, establishing our intellectual property portfolio and conducting clinical trials. We have not obtained regulatory approval for, or commercialized, any product candidates and it could be several years, if ever, before we have a commercialized product. The net losses we incur may fluctuate

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significantly from quarter to quarter and year to year. We anticipate that our expenses will increase substantially if, and as, we:

● continue the ongoing and planned development of our product candidates, including LAVA-051 and LAVA-1207 and other early-stage product candidates;

● initiate, conduct and complete any ongoing, anticipated or future preclinical studies and clinical trials for our current and future product candidates;

● develop processes and scale manufacturing production for our current and future product candidates in accordance with current Good Manufacturing Practices (cGMP);

● seek regulatory and marketing approvals for LAVA-051, LAVA-1207 and any of our other product candidates that successfully complete clinical trials;

● discover and develop additional bispecific gamma delta engagers and make further investments in our Gammabody platform to identify additional product candidates;

● maintain, protect and expand our intellectual property portfolio, including incurring costs associated with opposing and invalidating competitor patents and licensing other technologies for our product candidates;

● establish a sales, marketing, manufacturing and distribution, supply chain and other commercial infrastructure in the future to commercialize any current or future product candidate for which we may obtain marketing approval;

● expand our operations in the U.S. and Europe;

● add clinical, scientific, operational, financial and management information systems and personnel, including personnel to support our product development and planned future commercialization efforts;

● acquire or in-license additional product candidates and technologies;

● develop a potential companion diagnostic;

● address any events outside of our control, including, but not limited to, outbreaks of infectious diseases such as the COVID-19 pandemic; and

● general economic and market conditions and overall fluctuations in the United States and international equity markets, such as deteriorating conditions due to investor concerns regarding inflation and the hostilities between Russia and Ukraine.

To become and remain profitable, we must succeed in developing and eventually commercializing products that generate significant revenue. We may however never succeed in generating significant revenue and, even if we do, may never generate revenues that are sufficient to offset our expenses and achieve profitability.

Because of the numerous risks and uncertainties associated with product candidate development, we are unable to accurately predict the timing or amount of expenses or when, or if, we will be able to achieve profitability. If we are required by regulatory authorities to perform clinical trials or preclinical studies in addition to those currently expected, or if there are any delays in the initiation and completion of our clinical trials or the development of any of our product candidates, our expenses could increase.

Moreover, even if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to become and remain profitable would decrease the value of our company and could impair our ability to raise capital, maintain our research and development efforts, and expand our business or continue our operations.

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Adverse developments affecting financial institutions, companies in the financial services industry or the financial services industry generally, such as actual events or concerns involving bank failures, liquidity, defaults or non-performance, could adversely affect our operations and liquidity. 

Actual events involving limited liquidity, defaults, non-performance or other adverse developments that affect financial institutions or other companies in the financial services industry or the financial services industry generally, or concerns or rumors about any events of these kinds, have in the past and may in the future lead to market-wide liquidity problems. For example, on March 10, 2023, Silicon Valley Bank, or SVB, was closed by the California Department of Financial Protection and Innovation, which appointed the Federal Deposit Insurance Corporation, or the FDIC, as receiver.

Although a statement by the U.S. Department of the Treasury, the Federal Reserve and the FDIC stated that all depositors of SVB would have access to all of their money on the business day following the date of closure, uncertainty and liquidity concerns in the broader financial services industry remain, as other financial institutions face similar threats. Inflation and rapid increases in interest rates have led to a decline in the trading value of previously issued government securities with interest rates below current market interest rates. The U.S. Department of Treasury, FDIC and Federal Reserve Board have announced a program to provide up to $25 billion of loans to financial institutions secured by such government securities held by financial institutions to mitigate the risk of potential losses on the sale of such instruments. However, widespread demands for customer withdrawals or other needs of financial institutions for immediate liquidity may exceed the capacity of such program. There is no guarantee that the U.S. Department of Treasury, FDIC and Federal Reserve Board will provide access to uninsured funds in the future in the event of the closure of other banks or financial institutions in a timely fashion or at all.

Our access to our cash and cash equivalents in amounts adequate to finance our operations could be significantly impaired by the financial institutions with which we have arrangements directly facing liquidity constraints or failures. In addition, investor concerns regarding the U.S. or international financial systems could result in less favorable commercial financing terms, including higher interest rates or costs of capital and tighter financial and operating covenants, or systemic limitations on access to credit and liquidity sources, thereby making it more difficult for us to acquire financing on acceptable terms or at all. Any decline in available funding or access to our cash and cash equivalents could adversely impact our ability to meet our operating expenses, result in breaches of our contractual obligations or result in violations of federal or state wage and hour laws. Any of these impacts could have material adverse impacts on our operations and liquidity.

Our cash and cash equivalents may be exposed to the risk of loss as a result of the failure of our banking institutions with which we have a banking relationship.

While we seek to minimize our exposure to third-party losses of our cash and cash equivalents, we hold our balances in a number of large financial institutions. Notwithstanding, those institutions are subject to risk of failure. For example, on March 10, 2023, SVB  was unable to continue its operations and the FDIC was appointed as receiver to hold its deposits. On March 26, 2023, First–Citizens Bank & Trust Company, Raleigh, North Carolina (“First Citizens”) purchased all deposits and loans of SVB, and depositors of SVB became depositors of First Citizens.

As of March 31, 2023, less than $0.1 million of our cash and cash equivalents were held with First Citizens. All of our other cash and cash equivalents are held with other large financial institutions, and we do not expect further developments with the purchase of SVB’s deposits by First Citizens to have a material impact on our cash and cash equivalents balance, expected results of operations, or financial performance for the foreseeable future. However, if further failures occur at financial institutions where we hold deposits, we could experience additional risk of loss of our cash and cash equivalents. Any such loss or limitation on our cash and cash equivalents would adversely affect our business.

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Our limited operating history may make it difficult to evaluate the success of our business to date and to assess our future viability.

Since inception, our operations to date have been limited to developing our Gammabody platform, financing and staffing our company, identifying and developing LAVA-051, LAVA-1207 and other product candidates, business planning and providing general and administrative support to these operations. Our product candidate, LAVA-051, is being evaluated in a Phase 1/2a clinical trial in chronic lymphocytic leukemia (CLL), multiple myeloma (MM) and, at later stages, acute myeloid leukemia (AML). Our solid tumor product candidate, LAVA-1207, is being evaluated in a Phase 1/2a clinical trial in metastatic castration-resistant prostate cancer (mCRPC). We have not yet, and may never, successfully complete a clinical trial, obtain marketing approval, manufacture commercial scale cGMP-product (including through a third party), or conduct sales and marketing activities necessary for successful product commercialization. Consequently, predictions about our future success or viability may not be as accurate as they could be if we had a longer operating history or a history of successfully developing and commercializing product candidates.

In addition, as a business with a limited operating history, we may encounter unforeseen expenses, difficulties, complications, delays and other known and unknown factors. We will eventually need to transition from a company with a research and clinical focus to a company capable of supporting commercial activities, if any of our product candidates are approved. We may not be successful in such a transition.

We will require substantial additional funding to finance our operations to complete the development and commence commercialization of our product candidates. If we are unable to raise capital when needed, we could be forced to delay, reduce or terminate certain of our development programs or other operations.

We expect our expenses to increase in connection with our ongoing activities, particularly as we continue the Phase 1/2a clinical trials for LAVA-051 and LAVA-1207, initiate later-stage clinical development, and continue to research, develop and initiate clinical trials for other product candidates and obtain and maintain intellectual property and other proprietary rights. In addition, if we obtain regulatory approval for any of our product candidates, we expect to incur significant commercialization expenses related to product manufacturing, marketing, sales and distribution, as well as expenses related to any milestone and royalty payment.

Furthermore, our operations have consumed substantial amounts of cash since inception, and we expect our expenses to continue to increase in connection with the costs associated with operating as a public company. Accordingly, we will need to obtain substantial additional funding in connection with our continuing operations and planned research and clinical development activities. Because the design and outcome of our ongoing and anticipated clinical trials are highly uncertain, we cannot reasonably estimate the actual amount of resources and funding that will be necessary to successfully complete the development and commercialization of any product candidate we develop. Although it is difficult to forecast all of our future liquidity requirements, based on our current research and development plans, we believe that our existing cash, cash equivalents and investments will be sufficient to fund our operations through at least the next 12 months. Moreover, we will need to obtain substantial additional funding in connection with our continuing operations and planned research and clinical development activities.

Until we can generate sufficient product revenue to finance our cash requirements, which we may never do, we expect to finance our future cash needs through a combination of public or private equity offerings, debt financings, collaborations, strategic alliances, licensing arrangements and other marketing or distribution arrangements. Disruptions in the financial markets and other global events may make equity and debt financing more difficult to obtain and may have a material adverse effect on our ability to meet our fundraising needs. If we are unable to obtain sufficient funding in a timely manner or on commercially acceptable terms, we may have to delay, reduce the scope of, or eliminate one or more of our development programs, and consider other cost reduction initiatives, such as downsizing our operations or suspending, curtailing, or withholding initiation or expansion of clinical trials or research. In addition, in the event we are not able to generate sufficient funds, we may be unable to continue as a going concern and our business, financial condition and/or results of operations could be materially and adversely affected which could result in a decrease in the price of our common shares and, ultimately, insolvency. In addition, any perceived or actual

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inability by us to finance our clinical development activities and other business activities may cause the market price of our common shares to decline.

We will need to raise additional capital, which may not be available on acceptable terms, or at all. Raising additional capital may cause dilution to our shareholders, restrict our operations or require us to relinquish rights to our product candidates.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through public or private equity or debt financings, third-party funding, marketing and distribution arrangements, as well as other collaborations, strategic alliances and licensing arrangements, or any combination of these approaches. We do not have any committed external source of funds. To the extent that we raise additional capital, if available, through the sale of equity or convertible debt securities, your ownership interest in our company may be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our existing shareholders. Debt and equity financings, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as redeeming our shares, making investments, incurring additional debt, making capital expenditures, declaring dividends or placing limitations on our ability to acquire, sell or license intellectual property rights. Furthermore, the issuance of additional securities, whether equity or debt, by us, or the possibility of such issuance, may cause the market price of our common shares to decline and existing shareholders may not agree with our financing plans or the terms of such financings. Adequate additional financing may not be available to us on acceptable terms, or at all.

If we raise additional capital through future collaborations, strategic alliances or third-party licensing arrangements, we may have to relinquish valuable rights to our intellectual property, future revenue streams, research programs or product candidates, or grant licenses on terms that may not be favorable to us, if at all. If we are unable to raise additional capital when needed, we may be required to delay, limit, reduce or terminate our product candidate development or future commercialization efforts, or grant rights to develop and market product candidates that we would otherwise develop and market ourselves.

Exchange rate fluctuations could negatively affect our financial condition.

Our consolidated financial statements are presented in U.S. dollars (USD). We operate via our Dutch and U.S. entities, but we also conduct business in Switzerland, Spain, Italy and France. Therefore, we have expenses denominated in USD, euros and Swiss francs in connection with, among other things, our sponsored clinical trials, purchase of drug product for our clinical trials, process development and the prosecution and maintenance of our intellectual property portfolio. As a result, our business and share price may be affected by fluctuations between the euro, the USD and the Swiss franc, which may have a significant impact on our reported results of operations and cash flows from period to period.

Risks related to the development and commercialization of our product candidates

Our product candidates and related technologies, including LAVA-051 and LAVA-1207, which are based on bispecific gamma delta T cell engagers, are novel approaches to cancer treatment, which makes it difficult to predict the time and cost of development and subsequent regulatory approval. Currently, there are no bispecific gamma delta T cell engagers which have been approved for cancer treatment by the United States Food and Drug Administration (FDA) or European Medicines Agency (EMA).

We have concentrated our product candidates and research and development efforts on our Gammabody platform, which we believe represents a novel approach to cancer treatment. Our future success depends on our successful development of our bispecific gamma delta T cell engager product candidates and related technology.

To date, gamma delta T cells and products that induce gamma delta T cell activation have only been evaluated in a limited number of early clinical trials. These clinical trials were primarily designed to evaluate safety and tolerability, and not designed to produce statistically significant results as to efficacy. Although prior clinical trials by other companies have shown early signs of gamma delta T cell efficacy, and other

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clinical trials have produced encouraging results regarding bispecifics, our Phase 1/2a clinical trials for LAVA-051 and LAVA-1207 are the only clinical trials conducted that utilize our Gammabody technology. Even after the completion of our Phase 1/2a clinical trials for LAVA-051 and LAVA-1207, our Gammabody product candidates will have only been tested in a small number of patients. Results from these clinical trials may not necessarily be indicative of the safety and tolerability or efficacy of our product candidates as we expand into larger clinical trials.

There can be no assurance that we will not experience problems or delays in developing LAVA-051, LAVA-1207 and additional product candidates, in particular, as a result of the limited number of prior studies and clinical trials of gamma delta T cells, and that such problems or delays will not cause unanticipated costs, or that such development problems can be solved. Our Gammabody platform and our LAVA-051 and LAVA-1207 product candidates are in early stages of development and may never be commercialized. Although we intend to leverage our experience with LAVA-051 and LAVA-1207 in our preclinical and clinical development of other product candidates, we may be unable to reduce development timelines or costs for our other Gammabody programs. For instance, we may encounter unforeseen problems and delays for current and future product candidates that are either or both specific to a product candidate or extend to multiple product candidates.

We may not ultimately be able to provide the regulatory authorities with clinical evidence to support a claim of safety, efficacy, purity, and potency sufficient to approve our Gammabody product candidates for any indication. This may occur for reasons such as early clinical trials do not meet their endpoints, later clinical trials fail to reproduce favorable data obtained in earlier clinical trials, the results of such trials are not statistically significant, or the FDA, EMA or other regulatory body disagrees with how we interpret the data from these clinical trials, or does not accept these therapeutic effects as valid endpoints in pivotal clinical trials necessary for market approval. Moreover, we will also need to demonstrate that our product candidates are safe. We have only recently begun to receive safety data on our clinical trials. We do not have data on possible harmful long-term effects of our Gammabody product candidates and do not expect to have this data in the near future. As a result, our ability to generate clinical safety and efficacy data sufficient to support submission of a marketing application or commercialization of our Gammabody product candidates is subject to significant uncertainty and risk.

Furthermore, actual or perceived safety issues, including adoption of new therapeutics or novel approaches to treatment, may adversely influence the willingness of patients to participate in clinical trials, or if approved by applicable regulatory authorities, of physicians to subscribe to the novel treatment mechanics.

In particular, T cell engagers developed by other companies have been observed to cause safety issues, including cytokine release syndrome (CRS), which have, in certain cases, resulted in a delay or abandonment of those clinical programs. At present, only a few bispecific T cell engagers, including blinatumomab, are approved by the FDA. Our Gammabody class of bispecific gamma delta T cell engager product candidates have been perceived as potentially having similar complications. These perceived complications have affected the clinical protocol design of our clinical trials in the United States and may have further impact in other jurisdictions. Because all our product candidates are based on the same core Gammabody platform, if any of our product candidates encounter safety or efficacy problems, developmental delays or regulatory issues or other problems, these could impact the development plans for our other product candidates.

Also, competitors who are developing other bispecific gamma delta T cell engagers may experience problems with their product candidates that could identify problems with T cell engagers generally, which could potentially harm our ability to develop and commercialize our product candidates and harm our business. Our class of bispecific gamma delta T cell engagers could have, or be perceived to have, additional complications due to their unique mechanism of action (MoA). Consequently, we cannot be certain that our product candidates will be successful in clinical studies or that they will receive regulatory approval even if they are successful in clinical studies. If our product candidates face such complications or other challenges that we are unable to satisfactorily resolve, our ability to commercialize and generate product revenue will be significantly and adversely affected.

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We are dependent on the successful clinical development and regulatory approval of our product candidates. We cannot give any assurance that LAVA-051, LAVA-1207 or any of our future product candidates will receive regulatory approval, and if we are not able to obtain required regulatory approvals, we will not be able to commercialize our product candidates, which will adversely affect our ability to generate product revenue.

We are in early-stage clinical development with two product candidates, LAVA-051 and LAVA-1207. Our business is dependent on our ability to successfully complete development of, and obtain regulatory approval for, our product candidates in a timely manner. We may face unforeseen challenges in our product candidate development strategy, and we can provide no assurances that (i) our product candidates will prove to be effective, (ii) we will be able to take advantage of abbreviated regulatory pathways for any of our product candidates or (iii) we will ultimately be successful in our ongoing and future clinical trials.

Our ability to generate product revenues, which we do not expect to occur for several years, if ever, will depend on the successful development and eventual commercialization of the product candidates we develop, which may never occur. All of our product candidates, and any future product candidates we develop, will require additional preclinical and clinical development, management of clinical, preclinical and manufacturing activities, marketing approval in the United States and other jurisdictions, demonstrating cost effectiveness to pricing and reimbursement authorities in various jurisdictions, obtaining and securing sufficient manufacturing supply for both clinical development and commercial production, building of a commercial organization, and substantial investment and significant marketing efforts before we generate any revenues from any future product sales.

Our ability to successfully complete clinical development and obtain regulatory approval from the FDA, EMA or comparable regulatory authority for our product candidates will depend on several factors, including the following:

● successful and timely completion of our current clinical trials;

● initiation and successful patient enrollment and completion of additional clinical trials on a timely basis;

● receipt of safety, tolerability and efficacy profiles that are satisfactory to the FDA, EMA or any comparable regulatory authority for marketing approval;

● agreement by regulatory authorities with our interpretation of data from our preclinical studies or clinical trials;

● the adequacy of record keeping or the record keeping of our clinical trial sites or investigators;

● approval by regulatory authorities of our manufacturing processes or facilities of third-party manufacturers with whom we contract for clinical and commercial supplies or our own manufacturing facility;

● timely receipt of marketing approvals for our lead product candidates from applicable regulatory authorities;

● the performance of our current and future collaborators; and

● the extent of any required post-marketing approval commitments to applicable regulatory authorities.

We do not have control over these factors and any of them could impact or prevent our ability to obtain regulatory approval, in which event, our business will be harmed.

Additionally, our current Phase 1/2a clinical trials for LAVA-051 and LAVA-1207 involve studying a relatively small patient population, which makes it difficult to predict whether the results observed in such clinical trials will be repeated in larger and more advanced clinical trials. We may experience numerous unforeseen events prior to, during, or as a result of, clinical trials that could delay or prevent our ability to receive marketing approval or commercialize our product candidates, including the following:

● delays in reaching a consensus with regulatory authorities on the design, location or implementation of our clinical trials for LAVA-051 and LAVA-1207 and other potential product candidates;

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● delays or setbacks in patient identification, qualification and enrollment;

● clinical trials of our product candidates may produce negative or inconclusive results;

● redesigning our study protocols and need to conduct additional studies as may be required by a regulator;

● changes in regulation or policy relating to the development and commercialization of our product candidate by the FDA, EMA or other comparable foreign regulatory authorities

● delay or failure in obtaining the necessary approvals from regulators or institutional review boards (IRBs), in order to commence a clinical trial at a prospective trial site, or their suspension or termination of a clinical trial once commenced;

● the number of patients required for clinical trials for our product candidates may be larger than we anticipate, enrollment in these clinical trials may be slower than we anticipate or may be lower than we anticipate due to challenges in recruiting, qualifying and enrolling suitable patients that meet the study criteria, participants may drop out of these clinical trials at a higher rate than we anticipate or the duration of these clinical trials may be longer than we anticipate;

● imposition of a clinical hold by regulatory authorities as a result of, among other reasons, a serious adverse event or a failed inspection of our clinical trial operations, trial sites or manufacturing facilities;

● occurrence of serious adverse events associated with the product candidate that are viewed to outweigh its potential benefits; and

● need to conduct additional clinical trials or abandon product development programs.

Furthermore, any inability to successfully complete preclinical and clinical development could result in additional costs or impair our ability to generate revenue from future product sales or other sources. In addition, if we make manufacturing or formulation changes to our product candidates, we may need to conduct additional testing to bridge our modified product candidate to earlier versions. Clinical trial delays could also shorten any periods during which we may have the exclusive right to commercialize our product candidates, if approved, or allow our competitors to bring competing products to market before we do, which could impair our ability to successfully commercialize our product candidates and may harm our business, financial condition, results of operations and prospects.

Success in preclinical studies or early-stage clinical trials may not be indicative of results in future clinical trials.

Results from preclinical studies or early-stage clinical trials are not necessarily predictive of future clinical trial results, and interim results of a clinical trial are not necessarily indicative of final results. Our product candidates, LAVA-051 and LAVA-1207, are still in the early stages of development in Phase 1/2a clinical trials. Our product candidates may fail to show the desired safety and efficacy in clinical development despite demonstrating positive results in preclinical studies or having successfully advanced through initial clinical trials.

Furthermore, we have limited safety and clinical efficacy data for the use of LAVA-051 and LAVA-1207 in humans. There can be no assurance that the results seen in preclinical studies for any of our product candidates ultimately will result in success in clinical trials. In addition, there can be no assurance that we will be able to achieve the same or similar success in our preclinical studies and clinical trials of our other product candidates.

There is a high failure rate for drugs and biologic products proceeding through clinical trials. Many companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in late-stage clinical trials even after achieving promising results in preclinical testing and earlier-stage clinical trials. The design of a clinical trial may also affect its ability to support approval of a product, and flaws in the design of a clinical trial may not become apparent until the clinical trial is well advanced. As an organization, we have limited experience designing clinical trials and may be unable to design and execute a clinical trial to support regulatory approval.

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If we do not observe favorable results in the clinical trials of our product candidates that would support regulatory approval, we may decide to delay or abandon clinical development of such product candidates. Similarly, data obtained from preclinical and clinical activities are subject to varying interpretations, which may delay, limit or prevent regulatory approval. In addition, we may experience regulatory delays or rejections as a result of many factors, including due to changes in regulatory policy during the period of our product candidate development. Any such delays could materially and adversely affect our business, financial condition, results of operations and prospects.

We have in the past, and in the future may enter into collaborations with third parties to conduct, supervise and monitor our preclinical studies and clinical trials, and if those third parties perform in an unsatisfactory manner, it may harm our business and delay or impair our ability to obtain regulatory approval or otherwise commercialize our product candidates.

We rely upon, and intend to rely on for the foreseeable future, clinical research organizations (CROs) and academic institutions to monitor and manage data for our preclinical programs and ongoing clinical programs, including our clinical trials for LAVA-051 and LAVA-1207. We control only certain aspects of the activities of our third-party service providers, including investigators and CROs. Nevertheless, we will be responsible for ensuring that each of our preclinical studies and clinical trials is conducted in accordance with the applicable protocol, legal, regulatory and scientific standards, and our reliance on third parties does not relieve us of our regulatory responsibilities.

We and these CROs are required to comply with good clinical practices (GCPs) which are regulations and guidelines enforced by the FDA and comparable regulatory authorities for any of our product candidates that are in preclinical and clinical development. The regulatory authorities enforce GCPs through periodic inspections of trial sponsors, principal investigators and clinical trial sites. Although we rely on CROs to conduct GCP-compliant clinical trials, we remain responsible for ensuring that each of our clinical trials is conducted in accordance with its investigational plan and protocol and applicable laws and regulations. If we or our CROs fail to comply with GCPs, the clinical data generated in our clinical trials may be deemed unreliable, and the FDA or comparable regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. If our CROs fail to comply with these regulations or fail to recruit a sufficient number of subjects, we may be required to repeat clinical trials, which would delay the regulatory approval process.

Further, these investigators, academic institutions and CROs are not our employees, and we will not be able to control, other than by contract, the number of resources, including time, which they devote to our product candidates and clinical trials. Use of third-party service providers may require us to disclose our proprietary or confidential information to these parties, which could increase the risk that this information will be misappropriated.

Our reliance on third parties to conduct clinical trials will result in less direct control over the management of data developed through clinical trials than would be the case if we were relying entirely upon our own staff. Communicating with CROs and other third parties can be challenging, potentially leading to mistakes as well as difficulties in coordinating activities. Such parties may:

● have staffing difficulties or experience management or ownership changes;

● fail to comply with contractual obligations, including with respect to confidentiality;

● experience regulatory compliance issues;

● undergo changes in priorities; or

● become financially distressed.

These factors may adversely affect the willingness or ability of third parties to conduct our clinical trials and may subject us to unexpected cost increases that are beyond our control. If our CROs, or hospitals where we conduct our clinical trials, do not successfully carry out their contractual duties or obligations with us or regulatory agencies, fail to meet necessary safety measures and protocols or meet expected deadlines, or fail to comply with regulatory and/or independent institutional review board (IRB) requirements, or if the quality or

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accuracy of the clinical data they obtain is compromised due to the failure to adhere to our clinical protocols or regulatory requirements or for any other reasons, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain regulatory approval for, or successfully commercialize, any product candidate that we develop. Consequently, our financial results and the commercial prospects for any product candidate that we develop would be harmed, our costs could increase, and our ability to generate revenue could be delayed.

If our relationships with any CROs or hospitals where we conduct our current clinical trials terminate, we may not be able to enter into arrangements with alternative CROs and other third parties or do so on commercially reasonable terms. Switching or adding additional CROs involves substantial cost and requires management time and focus. In addition, there is a natural transition period when a new CRO commences work. As a result, delays occur, which can negatively impact our ability to meet our desired clinical development timelines. While we intend to carefully manage our relationships with our CROs, there can be no assurance that we will not encounter challenges or delays in the future or that these delays or challenges will not have a negative impact on our business, financial condition and prospects.

In addition, principal investigators for our clinical trials may serve as scientific advisors or consultants to us from time to time and receive compensation in connection with such services. Under certain circumstances, we may be required to report some of these relationships to the regulatory authorities, which may conclude that a financial relationship between us and a principal investigator has created a conflict of interest or otherwise affected interpretation of the trial. Such regulatory authority may therefore question the integrity of the data generated at the applicable clinical trial site and the utility of the clinical trial itself may be jeopardized. This could result in a delay in approval, or rejection, of our marketing applications by the applicable regulatory authority and may ultimately lead to the denial of marketing approval of our product candidates.

Additionally, the FDA, EMA or an IRB may also suspend our clinical trials at any time if it appears that we or our collaborators are failing to conduct a clinical trial in accordance with regulatory requirements, that we are exposing participants to unacceptable health risks, or they find deficiencies in our investigational new drug applications (INDs) or the conduct of these clinical trials. Failures of our CROs to comply with regulations could also cause damage to our reputation and to public perception about our product candidates and technology. Consequently, if we experience delays in our clinical trials, or if we terminate a clinical trial prior to completion, the commercial prospects of our product candidates could be negatively impacted, and our ability to generate revenues from our product candidates may be delayed.

Disruptions at the FDA and other government agencies caused by funding shortages, market conditions or global health concerns could hinder their ability to hire, retain or deploy key leadership and other personnel, or otherwise prevent new or modified products from being advanced, developed, cleared or approved or commercialized in a timely manner or at all, which could negatively impact our business.

Disruptions at the FDA and other agencies, including government budget and funding levels, statutory, regulatory, and policy changes, their ability to hire and retain key personnel as well as impacts resulting from broader market conditions may affect the FDA’s ability to perform routine functions thereby extending the time necessary for new biologics or modifications to be cleared, or approved biologics to be reviewed and approved by necessary government agencies. If a prolonged government shutdown occurs, government funding levels are significantly reduced, or current or future global health concerns prevent the FDA or other regulatory authorities from conducting regulator inspections, reviews or other activities, it could significantly impact the ability of the FDA or other regulatory authorities to timely review and process our regulatory submissions, which could have a material adverse effect on our business.

Regulatory authorities may require concurrent approval of a companion diagnostic device with our product candidates, which could be time consuming and costly and may delay our ability to commercialize such product candidate.

Under the U.S. Federal Food, Drug, and Cosmetic Act, companion diagnostics are regulated as medical devices, and the FDA generally requires pre-market approval (PMA) for companion diagnostics at the same

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time as the related product candidate. The PMA application process, including the gathering of analytical and prospective clinical data and the submission to and review by the FDA, is rigorous and requires the applicant to provide the FDA with reasonable assurance of the device’s safety and effectiveness and information about the device and its components regarding, among other things, device design, performance, good manufacturing practices, and labeling. A PMA is not guaranteed and may take considerable time, and the FDA may ultimately respond to a PMA submission with a “not approvable” determination based on deficiencies in the application and require additional clinical trial or other data that may be expensive and time-consuming to generate and that can substantially delay approval.

For LAVA-051 and LAVA-1207, we do not believe it will be necessary to use FDA-cleared or Conformite Europeenne (CE) marked or FDA-approved diagnostic tests to diagnose patients or to assure the safe and effective use of product candidates in clinical trial patients. The approval of a companion diagnostic as part of the therapeutic product’s labeling limits the use of the therapeutic product to only those patients who express the specific marker that the companion diagnostic was developed to detect.

If a regulatory authority requires approval of a companion diagnostic for any of our product candidates, whether before or after it obtains marketing approval, we, and future collaborators, may encounter difficulties in developing and obtaining approval for such product candidate. Any delay or failure by us or third-party collaborators to develop or obtain regulatory approval of a companion diagnostic could delay or prevent approval or continued marketing of such product candidate.

Development of a product candidate intended for use in combination with an already approved therapy may present increased complexity and more or different challenges than development of a product candidate for use as a single agent or monotherapy.

We may develop LAVA-051 and LAVA-1207 and other product candidates for use in combination with approved therapies. We have not studied the benefits and potential challenges or side effects of combination therapies with our product candidates. The FDA, EMA or other comparable regulatory authority may require us to use more complex clinical trial designs to evaluate the contribution of each product and product candidate to any observed effects. It is possible that the results of these clinical trials could show that most or any positive results are attributable to the already approved product. Moreover, following product approval, the FDA, EMA or other comparable regulatory authority may require that products used in conjunction with each other be cross labeled. To the extent that we do not have rights to already approved products, this may require us to work with another company to satisfy such a requirement. Further, developments related to the already approved therapies may impact our clinical trials for the combination as well as our commercial prospects should we receive marketing approval. Such developments may include changes to the approved therapy’s safety or efficacy profile, changes to the availability of the approved therapy, and changes to the standard of care.

If we encounter difficulties in enrolling, qualifying or retaining patients in our clinical trials, our clinical development activities could be delayed or otherwise adversely affected.

The timely completion of clinical trials in part depends on patient enrollment, and as such, identifying and qualifying patients to participate in our LAVA-051 and LAVA-1207 clinical trials and future clinical trials is critical to our success. We may encounter difficulties in enrolling a sufficient number of eligible patients to participate in our clinical trials, thereby delaying or preventing development and approval of our product candidates. Even once enrolled, we may be unable to retain enough patients to complete any of our clinical trials.

We may experience difficulties in patient enrollment for our trials for LAVA-051 and LAVA-1207. Because our focus includes diseases with limited patient populations, there may be limited patient pools from which to draw in order to complete our clinical trials in a timely and cost-effective manner. If any such patient enrolled in any of our clinical trials must drop out due to pre-existing or unrelated health issues or due to a serious adverse effect, or dies, and we are not able to recruit additional patients in a timely manner, or at all, our clinical trials could be delayed or otherwise halted. Consequently, despite diligent planning of our clinical trials

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and analysis of their feasibility regarding patient recruitment, we may experience difficulties, delays or inability in patient enrollment in our clinical trials for a variety of reasons, including:

● the size and nature of the patient population;

● the severity and incidence of the disease under investigation;

● the design of the trial and the complexity for patients and clinical sites;

● the general health condition of the patient and their immune cells broadly;

● the risk that patients’ general health conditions do not allow the conduct of certain study/screening procedures, the manufacture of therapeutic product or application of the appropriate standard-of-care treatment;

● the ability to consistently manufacture Gammabody product candidates in sufficient quantities at sufficient activity to provide a suitable therapeutic dose;

● competing clinical trials in similar indications for other new therapeutics, new combination treatments, or new medicinal products;

● clinicians’ and patients’ perceptions as to the potential advantages and side effects of the product candidate being studied in relation to other available therapies, including any new drugs or treatments that may be approved or become standard of care for the indications we are investigating;

● the ability to obtain and maintain patients’ consents due to various reasons, including but not limited to, patients’ unwillingness to participate due to the ongoing COVID-19 pandemic;

● the risk that enrolled subjects will drop out or die before completion of the trial;

● the ability to develop and provide appropriate screening, product characterization and release assays;

● patients failing to complete a clinical trial or returning for post-treatment follow-up;

● our ability to manufacture the requisite materials for a patient and clinical trial; and

● inability of clinical sites to enroll patients as health care capacities are required to cope with natural disasters, epidemics or other health system emergencies.

Our efforts to build relationships with patient communities may not succeed, which could result in delays in patient enrollment in our clinical trials. Any negative results we may report in our LAVA-051 or LAVA-1207 clinical trials may make it difficult or impossible to recruit and retain patients in future clinical trials. Delays or failures in planned patient enrollment or retention may result in increased costs, program delays or both, which could have a harmful effect on our ability to develop our product candidates or could render further development impossible.

Serious adverse events (SAEs) or undesirable or unexpected side effects of LAVA-051, LAVA-1207 or future product candidates may be identified during development or after approval, which could lead to the discontinuation of our clinical development programs, refusal by regulatory authorities to approve our product candidates or, if discovered following marketing approval, revocation of marketing authorizations or limitations on the use of our product candidates thereby limiting the commercial potential of such product candidate.

During the conduct of clinical trials, patients report changes in their health, including illnesses, injuries and discomforts, to their physician. Often, it is not possible to determine whether the product candidate being studied caused these conditions. Regulatory authorities may draw different conclusions or require additional testing to confirm these determinations if they occur. Many times, side effects are only detectable after investigational drugs are tested in large-scale pivotal trials or, in some cases, after they are made available to patients on a commercial scale after approval. If additional clinical experience indicates that any of our product candidates have unacceptable side effects or cause serious or life-threatening side effects, the development of the product candidate may fail or be delayed, or, if the product candidate has received

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regulatory approval, such approval may be revoked, which would harm our business, prospects, operating results and financial condition.

Undesirable side effects caused by our product candidates, delivery methods or dosage levels could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA, EMA or other comparable regulatory authority. As a result of safety or toxicity issues that we may experience in our clinical trials, we may be placed on clinical hold and not receive approval to market any product candidates, which could prevent us from ever generating revenues or achieving profitability. Results of our clinical trials could reveal an unacceptably high severity and incidence of side effects, or side effects outweighing the benefits of our product candidates. In such an event, our studies could be delayed, suspended or terminated and the FDA, EMA or comparable regulatory authorities could order us to cease further development of or deny approval of our product candidates for any or all targeted indications. The treatment-related side effects could affect patient recruitment or the ability of enrolled subjects to complete the clinical trial or result in potential product liability claims.

To date, we have only tested LAVA-051 and LAVA-1207 in a limited number of patients with cancer and these clinical trial participants have only been observed for a limited period after dosing. We have not yet reported data from any LAVA-051 or LAVA 1207 Phase 2 clinical trial evaluating the potential therapeutic efficacy of LAVA-051 or LAVA-1207. The results of preclinical studies and early clinical trials, as well as data from interim analysis of ongoing clinical trials, may not be predictive of the results of ongoing or future clinical trials.

As we continue developing LAVA-051 and LAVA-1207 and initiate clinical trials of our additional product candidates, unacceptable toxicities, SAEs, undesirable or potentially fatal side effects, CRS, viral infections, relapse of disease or unexpected characteristics may emerge causing us to abandon these product candidates or limit their development to more narrow uses or subpopulations. In addition, these side effects may not be appropriately recognized or managed by the treating medical staff, and inadequate training in recognizing or managing the potential side effects of our product candidates could result in patient injury or death. Should we observe unacceptable toxicities in our clinical trials or identify undesirable side effects or other unexpected findings, our trials could be delayed or even terminated, and our development programs may be halted entirely.

Additionally, if any of our product candidates receives regulatory approval, and we or others later identify undesirable side effects caused by such product, several potentially significant negative consequences could result.

Consequently, such events could diminish the usage or otherwise limit the commercial success of our product candidates and prevent us from achieving or maintaining market acceptance of the affected product candidates, which could have a material adverse effect on our business.

There may be potential unforeseen business disruptions or market fluctuations that delay our business operations, product development, supply chain or clinical trials and increase our costs or expenses, such as business or operational disruptions, delays, or system failures due to malware, general economic and market conditions, overall fluctuations in the United States and international equity markets, including deteriorating market conditions, unauthorized access, terrorism, war, natural disasters, strikes, geopolitical conflicts, restrictions on trade, import or export restrictions, or public health crises, such as the COVID-19 pandemic.

We conduct our clinical trials for our product candidates in the fields of cancer in different geographies, all of which have been affected to varying extents by the COVID-19 pandemic. We believe that the coronavirus pandemic will continue to have an impact on various aspects of our clinical trials. For example, investigators may not want to take the risk of exposing cancer patients to COVID-19 since the dosing of patients is conducted within an in-patient setting. Other potential impacts of the COVID-19 pandemic on our future various clinical trials include patient dosing and study monitoring, which may be paused or delayed due to changes in policies at various clinical sites, federal, state, local or foreign laws, rules and regulations, including quarantines or other travel restrictions, prioritization of healthcare resources toward pandemic efforts, including diminished attention of physicians serving as our clinical trial investigators and reduced

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availability of site staff supporting the conduct of our clinical trials, interruption or delays in the operations of the government regulators, or other reasons related to the COVID-19 pandemic. It is unknown how long these pauses or disruptions could continue.

Interim, “top-line” and preliminary data from our clinical trials that we announce or publish from time to time may change as more patient data becomes available and are subject to audit and verification procedures that could result in material changes in the final data.

From time to time, we may publish interim, “top-line” or preliminary data from our clinical trials for LAVA-051 or LAVA-1207 or future clinical trials. Interim, “top-line” or preliminary data from clinical trials are subject to the risk that one or more of the clinical outcomes may materially change as patient enrollment continues and more patient data become available. Interim, “top-line” and preliminary data also remain subject to audit and verification procedures that may result in the final data being materially different from the preliminary data we previously published. As a result, interim, “top-line,” and preliminary data should be viewed with caution until the final data are available. Differences between interim, “top-line” and preliminary data and final data could significantly harm our business prospects and may cause the trading price of our common shares to fluctuate significantly.

Further, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value of the particular program, the approvability or commercialization of the particular product candidate or product and our business in general. In addition, the information we choose to publicly disclose regarding a particular study or clinical trial is based on what is typically extensive information, and others may not agree with what we determine is the material or otherwise appropriate information to include in our disclosure, and any information we determine not to disclose may ultimately be deemed significant with respect to future decisions, conclusions, views, activities or otherwise regarding a particular product candidate or our business. If the interim, “top-line,” or preliminary data that we report differ from actual results, or if others, including regulatory authorities, disagree with the conclusions reached, our ability to obtain approval for and commercialize our product candidates, our business, operating results, prospects or financial condition may be harmed.

We face significant competition, and many of our competitors have substantially greater experience and resources than we have. Our competitors may achieve regulatory approval before us or develop therapies that are more advanced or effective than ours, which may adversely affect our financial condition and our ability to successfully market or commercialize our product candidates.

The clinical and commercial landscape in the indications we are targeting, as well as in the field of immuno-oncology, is highly competitive. We face potential competition with respect to our current product candidates and may face competition with respect to any other product candidates that we may seek to develop or commercialize in the future from pharmaceutical and biotechnology companies, academic institutions, government agencies and other public and private research institutions.

Many of our current or potential competitors, alone or with their strategic partners, have greater financial resources, larger research and development staffs, and more experience in researching, developing and testing products than we do. They may have more experience in conducting clinical trials, obtaining FDA and other regulatory approvals, and manufacturing, marketing and distributing therapeutic products. Smaller companies like us may successfully compete by establishing collaborative relationships with larger pharmaceutical companies or academic institutions. Mergers and acquisitions in the pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our competitors.

Our competitors in the field of gamma delta T cell therapy include Adicet Bio, Inc., Editas Medicine, Inc., Eureka Therapeutics, Inc., Gadeta BV, ImCheck Therapeutics SAS, Immatics Biotechnologies GmbH, IN8bio, Inc., Leucid Bio Ltd, PhosphoGam Inc., Shattuck Labs Inc., Sandhill Therapeutics, Inc, Takeda Pharmaceutical Company Ltd, and TC BioPharm Limited. Our gamma delta T cell product candidates may also compete with other T cell and NK cell engaging therapies as well as NK cell-engaging therapies.

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There are many other companies that have commercialized or are developing immuno-oncology therapies for cancer including large biotechnology and pharmaceutical companies, such as Amgen, AstraZeneca, BMS, Eli Lilly and Company, EMS Serono, Genentech, a subsidiary of Roche, Merck & Co., Merck KGa, EMD, Serono, Novartis, Pfizer, Sanofi and Takeda. Many companies, not limited to those above, are attempting to combine immuno-oncology antibody therapies in order to modulate two cancer pathways simultaneously. Others have developed bispecific antibodies or bispecific fusion proteins to leverage the effect of a combination of single-target traditional monoclonal antibodies, which we refer to as traditional antibodies, in a single molecule.

Many of our potential competitors, alone or with their strategic partners, compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs. Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more convenient, or are less expensive than any products that we may develop. Furthermore, currently approved products could be discovered to have application for treatment of cancer and other diseases. Our competitors may succeed in developing, obtaining patent protection for, or commercializing their products more rapidly than us, which could result in our competitors establishing a strong market position before we are able to enter the market. Consequently, we may not be successful in marketing any product candidates we may develop against competitors.

Risks related to manufacturing and reliance on third parties

The manufacture of biotechnology products is complex, and manufacturers often encounter difficulties in production, which could negatively affect our ability to develop or commercialize our product candidates.

The manufacture of biotechnology products is complex and requires significant expertise and capital investment. We and our contract manufacturers must comply with cGMP regulations and guidelines for clinical trial product manufacture and for commercial product manufacture. We may encounter difficulties in production of LAVA-051, LAVA-1207 or our other product candidates, particularly in scaling up, addressing product quality, product comparability, validating production processes and mitigating potential sources of contamination. These difficulties include:

● challenges procuring raw materials;

● maintaining quality control for our products, including stability of products, quality assurance testing, issues arising from operator error;

● retaining qualified personnel for manufacturing processes;

● inability to meet our product specifications and quality requirements consistently;

● delay or inability to procure or expand sufficient manufacturing capacity;

● issues related to scale-up of manufacturing;

● costs and validation of new equipment and facilities required for scale-up;

● reliance on third party suppliers and manufacturers;

● compliance with cGMP requirements and other inspections by the FDA, EMA or other comparable regulatory authorities.

● the cost and timing of establishing, expanding and scaling manufacturing capabilities;

● inability to manufacture, or obtain from third parties, sufficient quantities of qualified materials under cGMPs, for the completion in pre-clinical and clinical studies; and

● problems with biopharmaceutical product candidate storage, stability and distribution resulting from global supply chain disruptions.

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In addition, if microbial, viral or other contaminations are discovered in therapeutic products or in the manufacturing facilities in which our product candidates are made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination.

Any adverse developments affecting manufacturing operations for LAVA-051, LAVA-1207 and our other and future product candidates may result in lot failures, inventory shortages, shipment delays, product withdrawals, recalls or other interruptions in the supply of our drug product, which could prevent the administration to patients and delay the development of our product candidates. We may also have to write off inventory, incur other charges and expenses for supply of drug product that fails to meet specifications, undertake costly remediation efforts, or seek more costly manufacturing alternatives. In such event, it would negatively impact our ability to generate revenue, harm our reputation, and could have an adverse effect on our business and financial condition.

For certain product candidates we have relied on a single-source supplier for bulk drug substance (BDS) and drug manufacturing. The loss of this supplier or its failure to supply us with BDS on a timely basis could impair our ability to develop our product candidates or otherwise delay the development process, which could adversely affect our business.

We currently depend on one single-source supplier for certain of our product candidates. In the event we lose our single-source supplier, our ability to develop our product candidates will likely be adversely impacted and delayed, which could adversely affect our business. We have completed the transfer of the manufacturing process for LAVA-051 to a second BDS supplier which is expected to become operational in the third quarter of 2023. Although we have transferred our manufacturing process for LAVA-051 to a second BDS supplier, there can be no assurance that we will be successful in manufacturing or if we will be able to do so on a timely basis, which could adversely affect our business. There are no immediate plans to select a second BDS supplier for LAVA-1207.

Although we believe that we have a substantial reserve of BDS to support each of our current clinical trial programs, there can be no assurance that our supply of BDS will not be limited, interrupted, or of satisfactory quality or continue to be available at acceptable prices. Additionally, we do not have any control over the process or timing of the acquisition or manufacture of materials by our supplier and cannot ensure that it will deliver to us the BDS we order on time, or at all. The loss of BDS provided by this supplier could require us to change the design of our product candidate development process based on the functions, limitations, features and specifications of the replacement.

In addition, the lead time needed to establish a relationship with a new supplier can be lengthy, and we may experience delays in meeting demand in the event we must switch to a new supplier. The time and effort to qualify a new supplier could result in additional costs, diversion of resources or reduced manufacturing yields, any of which would negatively impact our operating results. Our reliance on this single-source supplier exposes us to certain risks, including:

● our supplier may cease or reduce production or deliveries, raise prices or renegotiate terms;

● we may be unable to locate a suitable replacement on acceptable terms or on a timely basis, if at all; and

● if there is a disruption to our single-source supplier’s operations, and if we are unable to enter into arrangements with alternative suppliers, we may need to halt our clinical trial programs;

The manufacturing of our product candidates may also be affected by the growth in the costs and expenses of components or raw materials for such product candidates. Likewise, supply sources could be interrupted from time to time and, if interrupted, there is no guarantee that supplies could be resumed (whether in part or in whole) within a reasonable timeframe and at an acceptable cost or at all. Furthermore, subsequent orders of the same supplies may be according to different specifications, which could cause delays in our manufacturing process.

Any adverse developments affecting manufacturing operations for our product candidates, if any are approved, may result in shipment delays, inventory shortages, lot failures, product withdrawals or recalls, cost increases or other interruptions in the supply of our product candidates, which could delay our clinical trials and materially impact our business and operations.

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We currently store our Gammabody product candidates at specialized external storage facilities operating under established rules and regulations, and any damage or loss to storage freezers if not detected and remediated in time, would cause delays in replacement, and our business could suffer.

All our Gammabody product candidates are manufactured from a vial of a master cell bank or a working cell bank of that antibody’s production cell line. We have or intend to have one master cell bank for each bispecific T cell engager (bsTCE) that was or will be produced and tested in accordance with cGMP and applicable regulations. Any adverse developments affecting manufacturing operations for our product candidates while they are undergoing clinical trials could delay the timeline on which such trials are being conducted.

Our master and working cell banks are stored at multiple specialized external storage facilities operating under established rules and regulations. If these cells are damaged, including by the loss or malfunction of liquid nitrogen filled Dewar vessels or freezers, or back-up power systems, as well as by damage from fire, power loss or other natural disasters, we would need to establish replacement cell banks, which could impact clinical supply and could delay our clinical trials. We would also need another supplier with a good manufacturing process (GMP) facility. If we or our third-party contractors are unable to establish replacement cell banks, as applicable, we could incur significant additional expenses and liability, our development programs could be delayed or terminated, and our business could suffer.

If we cannot manufacture our product candidates or the product candidates of our collaborations reliably or in sufficient amounts utilizing Contract Development Manufacturing Organizations (CDMOs) or ourselves, at acceptable costs and on a timely basis, we may be unable to supply sufficient product candidates for nonclinical studies or clinical trials or to support commercialization of our product candidates, if approved.

We do not own or operate manufacturing facilities and have no plans to build our own clinical or commercial-scale manufacturing capabilities. We cannot ensure that our suppliers will remain in business, have sufficient capacity or supply to meet our needs, or that they will not be purchased by one of our competitors or another company that is not interested in continuing to work with us. If we cannot establish sufficient supply through alternative third-party CDMOs or in our own facilities, should we develop these, our ability to conduct the planned and future clinical trials and our plans for commercialization would be materially adversely affected.

In addition, we currently rely on a small number of CDMOs for the production of certain of our product candidates and our collaborations and, as a result, face certain additional risks relating to our manufacturing operations. A single significant disruptive event at the manufacturing operations of one of our CDMOs can have a material adverse effect on our business, prospects, financial condition and results of operations. Business interruption insurance may not adequately compensate us for any losses that may occur and we would have to bear the additional cost of any disruption. For instance, if we were to experience an unexpected loss of supply, or if our CDMOs are unable to meet our demand for our product candidates or their services, we could experience delays in our research and development activities, planned clinical trials or commercialization of approved products. Finding alternative CDMOs or suppliers of acceptable quality who can deliver appropriate volumes at acceptable cost may require additional time and resources. Moreover, the transition periods involved in the change of CDMOs and suppliers, if necessary, could significantly delay our clinical trials and the commercialization of our product candidates, if approved.

Manufacturers of drug and biological products often encounter difficulties in production, particularly in scaling up or out, validating the production process, and assuring high reliability of the manufacturing process (including the absence of contamination). These problems include logistics and shipping, difficulties with production costs and yields, quality control, including stability of the product, product testing, operator error, availability of qualified personnel, as well as compliance with strictly enforced federal, state and non-U.S. regulations. Furthermore, if contaminants are discovered in the supply of our drug product or in the manufacturing facilities, such manufacturing facilities may need to be closed for an extended period to investigate and remedy the contamination. We cannot assure you that any stability failures or other issues relating to the manufacture of our product candidates will not occur in the future. Any delay or interruption in the supply of clinical trial supplies could delay the completion of clinical trials, increase the costs associated

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with maintaining clinical trial programs and, depending upon the period of delay, require us to begin new clinical trials at additional expense or terminate clinical trials completely.

We will need to work with CDMOs that can meet all applicable FDA and other regulatory authority requirements on an ongoing basis. If the manufacturing process is changed during product development, the FDA or other regulatory authorities could require us to repeat some or all previously conducted trials or conduct additional trials to obtain bridging data, which could delay or impede our ability to obtain marketing approval. If we or our CDMOs are unable to reliably produce and release our product candidates to specifications acceptable to FDA or other regulatory authorities, we may not obtain or maintain the approvals we need to further develop, conduct clinical trials for, and commercialize such product candidates. Similarly, approval of our product candidates could be delayed or denied if the intended manufacturing site fails to pass the required preapproval inspection. Even if we obtain regulatory approval for any of our product candidates, there is no assurance that either we or our CDMOs will be able to manufacture the approved product to specifications acceptable to the FDA or other regulatory authorities, to produce it in sufficient quantities to meet the requirements for the potential launch of the product, or to meet potential future demand. Any of these challenges could delay completion of clinical trials, require clinical trials to obtain bridging data or the repetition of one or more clinical trials, increase clinical trial costs, delay approval of our product candidates, impair commercialization efforts, increase our cost of goods, and have a material adverse effect on our business, financial condition, results of operations and growth prospects.

Future clinical trials that we conduct, as well as any potential commercialization of our product candidates when approved, will depend on the reliability, safety and efficacy of our manufacturing methodology. Our efforts to scale up production of our bispecific gamma delta T cell engager antibodies in anticipation of future clinical trials or commercialization may reveal defects in our methodology, an inability to overcome biology or may otherwise encounter challenges, including scrutiny from regulatory authorities. To the extent we encounter any such difficulties, our ability to conduct additional clinical trials or to scale for commercialization will be hindered or prevented, which would have an adverse effect on our business.

Risks related to our intellectual property

Licensing of intellectual property is of critical importance to our business and involves complex legal, business and scientific issues. If we are unable to obtain or protect rights relating to our technology and future product candidates, or if our intellectual property rights are inadequate, we might not be able to compete effectively.

We have entered into license agreements and agreements where we have received a contingent assignment to certain patent rights with third parties and we expect to enter into additional such agreements in the future to advance our research or allow commercialization of LAVA-051, LAVA-1207 or any future product candidates we may develop. These license agreements impose financial and other obligations that are relevant to our business and financial operations, and if we fail to comply with our obligations under these agreements, we could lose our rights, or face further liability, under such license agreements. For example, if we fail to meet our obligations under the VUmc Agreement in any material respect and fail to cure such breach in a timely fashion, VUmc may terminate the agreement, and we would be obligated to transfer back to VUmc the assigned patent rights. While we would expect to exercise all rights and remedies available to us, including seeking to cure any breach by us, and otherwise seek to preserve our rights under the agreement, we may not be able to do so in a timely manner, at an acceptable cost or at all. For more information on the VUmc Agreement, see “Item 4: Information on the Company.” If these agreements are terminated, we could lose intellectual property rights that are important to our business, be liable for damages to such licensors or be prevented from developing and commercializing our product candidates. Termination of these agreements or reduction or elimination of our rights under these agreements may also result in our being required to negotiate new or reinstated agreements with less favorable terms, and it is possible that we may be unable to obtain any such additional licenses at a reasonable cost or on reasonable terms, if at all. In that event, we may be required to expend significant time and resources to redesign our product candidates or the methods for manufacturing them or to develop or license replacement technology, all of which may not be feasible on a technical or commercial basis.

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License agreements we enter into in the future may not provide exclusive rights to use intellectual property and technology in all relevant fields of use and in all territories in which we may wish to develop or commercialize our technology and products. As a result, we may not be able to prevent competitors from developing and commercializing competitive products in territories included in all our licenses.

Disputes may arise between us and our current or future licensors regarding intellectual property subject to a license agreement, including:

● the scope of rights granted under the license agreement and other interpretation-related issues;

● whether and the extent to which our technology and processes infringe on intellectual property of the licensor that is not subject to the licensing agreement;

● our right to sublicense, transfer or assign patents and other rights to third parties;

● our diligence obligations under the license agreement and what activities satisfy those diligence obligations;

● the inventorship and ownership of inventions and know-how resulting from the joint creation or use of intellectual property by our licensors and us and our partners; and

● the priority of invention of patented technology.

In addition, the agreements under which we license intellectual property or technology from third parties are complex, and certain provisions in such agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement that may arise could narrow what we believe to be the scope of our rights to the relevant intellectual property or technology or increase what we believe to be our financial or other obligations under the relevant agreement, either of which could significantly harm our business, financial condition, results of operations and prospects. Moreover, if disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on commercially acceptable terms, we may be unable to successfully develop and commercialize the affected product candidates, which could significantly harm our competitive position, business, financial condition, results of operations and prospects.

If we are unable to obtain and maintain patent and other intellectual property protection for our product candidates and technology, or if the scope of protection obtained is not sufficiently broad or robust, our competitors could develop and commercialize products and technology similar or identical to ours, and our ability to successfully commercialize our product candidates and technology may be adversely affected.

Our success depends in part on our ability to obtain and maintain protection for our owned and in-licensed intellectual property rights and proprietary technology. We rely on patents and other forms of intellectual property rights, including in-licenses of intellectual property rights and biologic materials of others, to protect our current or future discovery platform, product candidates, methods used to manufacture our future product candidates, and methods for treating patients using our future product candidates.

We and our licensors have sought, and intend to seek, to protect our proprietary position by filing patent applications in the United States and abroad related to our product candidates and our technology that are important to our business including LAVA-051 and LAVA-1207. We may also seek to protect our proprietary position by acquiring or in-licensing additional issued patents or pending patent applications from third parties.

As of December 31, 2022, we own, co-own or exclusively license three issued U.S. patents, seven pending U.S. patent applications, seven pending European regional-phase patent applications, three pending Patent Cooperation Treaty (PCT) patent applications, eight issued patents in other territories and more than forty pending patent applications in other territories, which are important to the development of our business. For more information relating to our patent portfolio, see “Item 4: Information on the Company.” If we or our licensors are unable to obtain and maintain intellectual property protection with respect to inventions and technology important to our business, our competitive position, financial condition, results of operations and prospects may be significantly harmed.

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The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal and factual questions and has, in recent years, been the subject of much litigation. Since patent applications in the United States and most other countries are confidential for a period after filing, and some remain so until issued, we cannot be certain that we or our licensors were the first to file a patent application relating to any particular aspect of a product candidate or technology. As a result of these and other factors, the issuance, scope, validity, enforceability, and commercial value of our patent rights are highly uncertain. Our and our licensors’ pending and future patent applications may not result in patents being issued which protect our technology or products, in whole or in part, or which effectively prevent others from commercializing competitive technologies and products. Changes in either the patent laws or interpretation of the patent laws in the United States and other countries may also diminish the value of our patents or narrow the scope of our patent protection.

Pending patent applications cannot be enforced against third parties practicing the technology claimed in such applications unless, and until, patents have been issued from such applications, and then only to the extent the issued claims cover the technology. Although we enter into non-disclosure and confidentiality agreements with parties who have access to confidential or patentable aspects of our research and development activities, any of these parties may breach the agreements and disclose such activities before a patent application is filed, thereby jeopardizing our ability to seek patent protection.

Moreover, we may be subject to a third-party pre-issuance submission of prior art or become involved in opposition, derivation, reexamination, inter partes review, post-grant review, interference or other similar proceedings, or litigation, challenging our patent rights or the patent rights of our licensors. The costs of defending our patents or enforcing our proprietary rights in such administrative proceedings or litigation can be substantial and the outcome can be uncertain. An adverse determination in any such submission, proceeding or litigation could reduce the scope of, or invalidate, our patent rights, allow third parties to commercialize our technology or products and compete directly with us, without payment to us, or result in our inability to manufacture or commercialize products without infringing third-party patent rights. In addition, if the breadth or strength of protection provided by our patents and patent applications is threatened, regardless of the outcome, it could dissuade companies from collaborating with us to license, develop or commercialize current or future product candidates or could embolden competitors to launch products or take other steps that could disadvantage us in the marketplace or draw us into additional expensive and time-consuming disputes.

The patent prosecution process is expensive, time-consuming and complex, and we may not be able to file, prosecute, maintain, enforce or license all necessary or desirable patent applications at a reasonable cost or in a timely manner or in all jurisdictions where protection may be commercially advantageous. It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection.

We or our licensors have not pursued or maintained, and may not pursue or maintain in the future, patent protection for our product candidates in every country or territory in which we may sell our products, if approved. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States. Consequently, we may not be able to prevent third parties from infringing our patents in all countries outside the United States, or from selling or importing products that infringe our patents in and into the United States or other jurisdictions.

Moreover, the coverage claimed in a patent application can be significantly reduced before the patent is issued, and its scope can be reinterpreted after issuance. Even if the patent applications we license or own do issue as patents, they may not issue in a form that will provide us with any meaningful protection, prevent competitors or other third parties from competing with us or otherwise provide us with any competitive advantage. Our competitors or other third parties may be able to circumvent our patents by developing similar or alternative products in a non-infringing manner.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our patents may be challenged in the courts or patent offices in the United States and abroad. Such challenges may result in loss of exclusivity or in patent claims being narrowed, invalidated or held unenforceable, which

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could limit our ability to stop others from using or commercializing similar or identical technology and products, or limit the duration of the patent protection of our technology and product candidates.

Furthermore, we may develop, acquire or license intellectual property rights that have been generated through the use of Dutch or U.S. government funding. As a result, the Dutch or U.S. government may have certain rights, or march-in rights, to such patent rights and technology. Typically, the government can exercise its march-in rights if it determines that action is necessary because we fail to achieve practical application of the government-funded technology, because action is necessary to alleviate health or safety needs, to meet requirements of federal regulations, or to give preference to U.S. industry. In certain circumstances, the government may also have the right to take title to these inventions if the grant recipient fails to disclose the invention to the government or fails to file an application to register the intellectual property within specified time limits. In addition, our rights in such inventions may be subject to certain requirements to manufacture products embodying such inventions in the country. Any exercise by the government of such rights could harm our competitive position, business, financial condition, results of operations and prospects.

We may also be subject to claims challenging the inventorship or ownership of our patents and other intellectual property. It is possible that we do not perfect our ownership of all patents, patent applications and other intellectual property, including that we do not identify all inventors, or identify incorrect inventors, which may lead to claims disputing inventorship or ownership of our patents, patent applications or other intellectual property by former employees or other third parties or that we do not establish an unbroken chain of title from inventors to us. Errors in inventorship or ownership can sometimes also impact priority claims. If we were to lose ability to claim priority for certain patent filings, intervening art or other events may preclude us from issuing patents. Litigation may be necessary to defend against these and other claims challenging inventorship or ownership.

Obtaining and maintaining our patent rights depends on compliance with various procedural, document submission, fee payment and other requirements imposed by government patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.

Periodic maintenance fees, renewal fees, annuity fees and various other government fees on patents and/or patent applications will have to be paid to the United States Patent and Trademark Office (USPTO) and various government patent agencies outside the United States over the lifetime of our owned and licensed patents and/or applications and any patent rights we may own or license in the future. We rely on our outside counsel or our licensing partners and other professionals to help us comply with these requirements and pay these fees when due, and we are also dependent on our licensors to take the necessary action to comply with these requirements with respect to our licensed intellectual property. Noncompliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, nonpayment of fees and failure to properly legalize and submit formal documents. In some cases, an inadvertent lapse can be cured by payment of a late fee or by other means in accordance with the applicable rules. There are situations, however, in which noncompliance can result in abandonment or lapse of a patent or patent application, resulting in a partial or complete loss of patent rights in the relevant jurisdiction. In such an event, potential competitors might be able to enter the market and this circumstance could harm our business.

Patent terms may be inadequate to protect our competitive position on our product candidates for an adequate amount of time.

Depending upon the timing, duration and specifics of FDA marketing approval of any product candidates we may develop, one or more of our U.S. patents may be eligible for a limited patent term extension under the Drug Price Competition and Patent Term Restoration Act of 1984, or the Hatch-Waxman Amendments. The Hatch-Waxman Amendments permit a patent term extension of up to five years beyond the normal expiration of the patent as compensation for patent term lost during product development and the FDA regulatory review process. However, the extension cannot extend the total patent term beyond 14 years from the date of product approval and is limited to the approved indication (or any additional indications approved during the period of extension). Furthermore, only one patent per approved product can be extended and only those claims covering the approved product, a method for using it or a method for manufacturing it may be extended. Similar provisions are available in Europe, Japan and other jurisdictions to extend the term of a

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patent that covers an approved drug; however, the applicable authorities, including the FDA and the USPTO in the United States, and any equivalent regulatory authority in other countries, may not agree with our assessment of whether such extensions are available, and may refuse to grant extensions to our patents, because of, for example, failing to exercise due diligence during the testing phase or regulatory review process, failing to apply within applicable deadlines, failing to apply prior to expiration of relevancy patents or otherwise failing to satisfy applicable requirements, or may grant more limited extensions than we request. If this occurs, the period during which we can enforce our patent rights for the applicable product candidate will be shortened and our competitors may obtain approval to market competing products sooner. Additionally, our competitors may be able to take advantage of our investment in development and clinical trials by referencing our clinical and preclinical data and launch their product earlier than might otherwise be the case, any of which could harm our competitive position, business, financial condition, results of operations and prospects.

Third parties may initiate legal proceedings alleging that we are infringing, misappropriating or otherwise violating their intellectual property or other proprietary rights, the outcome of which would be uncertain and could have a negative impact on the success of our business.

Our commercial success depends, in part, upon our ability and the ability of others with whom we may collaborate to develop, manufacture, market and sell our current and any future product candidates and use our proprietary technologies without infringing, misappropriating or otherwise violating the intellectual property and other proprietary rights of third parties. The biotechnology and pharmaceutical industries are characterized by extensive and complex litigation regarding patents and other intellectual property rights.

We, or our licensors, or any future strategic partners may in the future become party to, or be threatened with, adversarial proceedings or litigation regarding intellectual property rights with respect to our current and any future product candidates and technology, including oppositions, interference proceedings, reexaminations, post grant review, inter partes review or derivation proceedings before the USPTO in the United States, or any equivalent regulatory authority in other countries. Third parties may assert infringement claims against us based on existing patents or patents that may be granted in the future, regardless of their merit. There is a risk that third parties may choose to engage in litigation with us to enforce or to otherwise assert their patent rights against us. These proceedings can be expensive and time-consuming, and many of our adversaries in these proceedings may have the ability to dedicate substantially greater resources to prosecuting these legal actions. Even if we believe such claims are without merit, there is no assurance that a court would find in our favor on questions of validity, enforceability, priority or non-infringement. A court of competent jurisdiction could hold that these third-party patents are valid, enforceable and infringed, which could have a negative impact on our ability to commercialize our current and any future product candidates. To successfully challenge the validity of any such U.S. patent in federal court, we would need to overcome a presumption of validity. As this is a high burden and requires us to present clear and convincing evidence as to the invalidity of any such U.S. patent claim, there is no assurance that a court of competent jurisdiction would invalidate the claims of any such U.S. patent.

Intellectual property rights of third parties could adversely affect our ability to commercialize our current or future technologies or product candidates, and we might be required to litigate or obtain licenses from third parties to develop or market our current or future technologies or product candidates, which may not be available on commercially reasonable terms or at all.

Given the vast number of patents in our field of technology, we cannot be certain that we do not infringe existing patents or that we will not infringe patents that may be granted in the future. Other companies and research institutions have filed, and may file in the future, patent applications related to gamma delta T cell immunotherapy. Some of these patent applications have already been allowed or issued, and others may issue in the future. While we may decide to initiate proceedings to challenge the validity of these or other patents in the future, we may be unsuccessful, and courts or patent offices in the United States and abroad could uphold the validity of any such patent. Furthermore, because patent applications can take many years to issue and may be confidential for 18 months or more after filing, and because pending patent claims can be revised before issuance, there may be applications now pending which may later result in issued patents that may be infringed by the manufacture, use or sale of our product candidates. Regardless of when filed, we may fail to identify relevant third-party patents or patent applications, or we may incorrectly conclude that a

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third-party patent is invalid or not infringed by our product candidates or activities. If a patent holder believes that our product candidate infringes its patent, the patent holder may sue us even if we have received patent protection for our technology. Moreover, we may face patent infringement claims from non-practicing entities that have no relevant drug revenue and against whom our own patent portfolio may thus have no deterrent effect. If a patent infringement suit were threatened or brought against us, we could be forced to stop or delay research, development, manufacturing or sales of the drug or product candidate that is the subject of the actual or threatened suit.

If we are found to infringe, misappropriate or otherwise violate a third party’s valid and enforceable intellectual property or other proprietary rights, we could be required to obtain a license from such third party to continue developing, manufacturing and marketing our product candidate(s) and technology. Under any such license, we would most likely be required to pay various types of fees, milestones, royalties or other amounts. Moreover, we may not be able to obtain any required license on commercially reasonable terms or at all. We could be forced, including by court order, to cease developing, manufacturing and commercializing the infringing technology or product candidate. In addition, we could be found liable for monetary damages, including treble damages and attorneys’ fees, if we are found to have willfully infringed a patent or other intellectual property right. We may also be required to indemnify collaborators or contractors against such claims. A finding of infringement, misappropriation or other violation of third-party intellectual property could prevent us from manufacturing and commercializing our current or any future product candidates or force us to cease some or all our business operations, which could harm our business.

The licensing or acquisition of third-party intellectual property rights is a competitive area, and more established companies may have a competitive advantage over us due to their size, capital resources and greater clinical development and commercialization capabilities. In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment or at all. If we are unable to successfully obtain rights to required third-party intellectual property rights or maintain the existing intellectual property rights we have, we may have to abandon development of the relevant program or product candidate, which could have an adverse effect on our business, financial condition, results of operations and prospects. Furthermore, even if we were able to obtain a license, it could be non-exclusive, thereby giving our competitors and other third parties access to the same technologies licensed to us, and it could require us to make substantial licensing and royalty payments.

We may be subject to claims asserting that our employees, consultants or advisors have wrongfully used or disclosed alleged trade secrets of their current or former employers or claims asserting ownership of what we regard as our own intellectual property.

Certain of our employees, consultants and advisors are currently, or were previously, employed at universities or other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Although we try to ensure that our employees, consultants and advisors do not use the proprietary information or know-how of others in their work for us, we may be subject to claims that these individuals, or we, have used or disclosed intellectual property, including trade secrets or other proprietary information, of any such individual’s current or former employer. Litigation may be necessary to defend against these claims, regardless of their merit, and we cannot predict whether we would prevail in any such actions. Our failure in defending any such claims, in addition to paying monetary damages, may cause us to lose valuable intellectual property rights or personnel and may prevent or delay our development and commercialization efforts, which could significantly harm our business, financial condition, results of operation and prospects. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and may cause negative publicity.

In addition, while it is our policy to require our employees and contractors who may be involved in the conception or development of intellectual property to execute agreements assigning such intellectual property to us, we may in the future be subject to claims by our former employees or consultants asserting an ownership right in our patents or patent applications because of work they performed on our behalf. We may be unsuccessful in executing such an agreement with each party who, in fact, conceives or develops intellectual property that we regard as our own, and we cannot be certain that our agreements with such parties will be upheld in the face of a potential challenge. The assignment of intellectual property rights may

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not be self-executing or the assignment agreements may be breached, for which we may not have an adequate remedy, and we may be forced to bring claims against third parties, or defend claims that they may bring against us, to determine the ownership of what we regard as our intellectual property. Such claims could have an adverse effect on our business, financial condition, results of operations and prospects.

We may be involved in lawsuits to protect or enforce our patents, the patents of our licensors or our other intellectual property or proprietary rights, which could be expensive, time-consuming and unsuccessful.

Competitors or other third parties may infringe, misappropriate or otherwise violate our patents, the patents of our licensors or our other intellectual property or proprietary rights. To counter infringement, misappropriation or unauthorized use, we may be required to file infringement or other intellectual property claims, which can be expensive and time-consuming and are likely to divert significant resources from our core business, including distracting our technical and management personnel from their normal responsibilities. In addition, in a patent infringement proceeding, a court may decide that a patent of ours or our licensors is not valid, is unenforceable, and/or is not infringed, or may refuse to stop the other party from using the technology at issue on the grounds that our owned or licensed patents do not cover the technology in question. An adverse result in any litigation or defense proceedings could put one or more of our owned or licensed patents at risk of being invalidated or interpreted narrowly and could put our owned or licensed patent applications at risk of not issuing. Such proceedings could result in the revocation of, cancellation of, or amendment to our patents in such a way that they no longer cover our technology or platform, or any product candidates that we may develop. The outcome following legal assertions of invalidity and unenforceability is unpredictable. We cannot be certain that there is or will be no invalidating prior art, of which we and the patent examiner were unaware during prosecution. For the patents and patent applications that we have licensed, we may have limited or no right to participate in the defense of any licensed patents against challenge by a third party. If a defendant were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps all, of any future patent protection on our current or future product candidates.

We may not be able to prevent, alone or with our licensors, infringement, misappropriation or other violations of our intellectual property and proprietary rights, particularly in countries where the laws may not protect those rights as fully as in the United States. Any litigation or other proceedings to enforce our intellectual property and proprietary rights may fail, and even if successful, may result in substantial costs and distract our management and other employees.

We may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their greater financial resources and more mature and developed intellectual property portfolios.

Accordingly, despite our efforts, we may not be able to prevent third parties from infringing, misappropriating or otherwise violating or from successfully challenging our intellectual property and proprietary rights. Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings could have an adverse effect on our ability to compete in the marketplace.

Changes in U.S. patent law or the patent law of other countries or jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect our current and any future product candidates.

Changes in either the patent laws or interpretation of the patent laws in the United States and other countries could increase the uncertainties and costs surrounding the prosecution of patent applications and the enforcement or defense of issued patents. Under the Leahy-Smith America Invents Act, or the America Invents Act, the United States transitioned to a first inventor to file system in which, assuming that other requirements for patentability are met, the first inventor to file a patent application will be entitled to the patent on an invention regardless of whether a third party was the first to invent the claimed invention. The America Invents Act also allows third-party submission of prior art to the USPTO during patent prosecution and additional procedures to attack the validity of a patent by USPTO-administered post-grant proceedings, including post-grant review, inter partes review, and derivation proceedings. The America Invents Act and its implementation could increase the uncertainties and costs surrounding the prosecution of our patent

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applications and the enforcement or defense of our issued patents, all of which could have an adverse effect on our business, financial condition, results of operations, and prospects.

In addition, the U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty about our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on future actions by the U.S. Congress, the federal courts, and the USPTO, or similar authorities in foreign jurisdictions, the laws and regulations governing patents could change in unpredictable ways that could weaken our ability to obtain new patents or to enforce patents that we own, have licensed or might obtain in the future. Changes in patent law and regulation in other countries or jurisdictions, changes in the governmental bodies that enforce them or changes in how the relevant governmental authority enforces patent laws or regulations may weaken our ability to obtain new patents or to enforce patents that we own or have licensed or that we may obtain in the future.

We may not be able to protect our intellectual property rights throughout the world, which could negatively impact our business.

Filing, prosecuting and defending patents covering our current and any future product candidates in all countries throughout the world would be prohibitively expensive, and our and our licensors’ intellectual property rights in some countries outside the United States may be less extensive than those in the United States. Competitors may use our technologies in jurisdictions where we or our licensors have not obtained patent protection to develop their own products and, further, may export otherwise infringing products to territories where we may obtain patent protection but where patent enforcement is not as strong as that in the United States. These products may compete with our products in jurisdictions where we do not have any issued or licensed patents, and any future patent claims or other intellectual property rights may not be effective or sufficient to prevent them from so competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biotechnology products, which could make it difficult for us to stop the infringement, misappropriation or other violation of our or our licensors’ patents or marketing of competing products in violation of our intellectual property and proprietary rights generally. Proceedings to enforce our intellectual property and proprietary rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents or the patents of our licensors at risk of being invalidated or interpreted narrowly, could put our patent applications or the patent applications of our licensors at risk of not issuing, and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property and proprietary rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Many countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. In addition, many countries limit the enforceability of patents against government agencies or government contractors. In these countries, the patent owner may have limited remedies, which could materially diminish the value of such patent. If we or any of our licensors is forced to grant a license to third parties with respect to any patents relevant to our business, our competitive position may be impaired, and our business, financial condition, results of operations and prospects may be adversely affected.

Reliance on third parties requires us to share our know-how or trade secrets, which increases the possibility that a competitor will discover them or that our know-how or trade secrets will be misappropriated or disclosed.

Since we rely on third parties to help us discover, develop, and manufacture our current and any future product candidates, or if we collaborate with third parties for the development, manufacturing or commercialization of our current or any future product candidates, we must, at times, share know-how or trade secrets with them. We may also conduct joint research and development programs that may require us

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to share know-how or trade secrets under the terms of our research and development partnerships or similar agreements. We seek to protect our proprietary technology in part by entering into confidentiality agreements and, if applicable, material transfer agreements, consulting agreements or other similar agreements with our advisors, employees, third-party contractors and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third parties to use or disclose our confidential information, including our know-how or trade secrets. Despite the contractual provisions employed when working with third parties, the need to share know-how or trade secrets and other confidential information increases the risk that such trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our know-how and trade secrets, a competitor’s discovery of our trade secrets or other unauthorized use or disclosure could have an adverse effect on our business and results of operations. In addition, from time to time, we may hire scientists or other employees or consultants who originate from jurisdictions, including China, which have a history of engaging in misappropriation or theft of trade secrets or other acts of trade secret espionage. If any such individuals are found to be engaging in such illegal behavior, it could have a material adverse effect on our ability to protect our intellectual property and our business prospects more generally.

In addition, these agreements typically restrict the ability of our advisors, employees, third-party contractors, and consultants to publish data potentially relating to our know-how or trade secrets. Despite our efforts to protect our know-how and trade secrets, we may not be able to prevent the unauthorized disclosure or use of our technical know-how or other trade secrets by the parties to these agreements. Moreover, we cannot guarantee that we have entered into such agreements with each party that may have or have had access to our confidential information or proprietary technology and processes. Monitoring unauthorized uses and disclosures is difficult, and we do not know whether the steps we have taken to protect our proprietary technologies will be effective. If any of the collaborators, scientific advisors, employees, contractors, and consultants who are parties to these agreements breaches or violates the terms of any of these agreements, we may not have adequate remedies for any such breach or violation, and we could lose our trade secrets as a result. Moreover, if confidential information that is licensed or disclosed to us by our partners, collaborators, or others is inadvertently disclosed or subject to a breach or violation, we may be exposed to liability to the owner of that confidential information. Enforcing a claim that a third-party illegally or unlawfully obtained and is using our trade secrets, like patent litigation, is expensive and time-consuming, and the outcome is unpredictable. In addition, courts outside the United States are sometimes less willing to protect trade secrets.

If we are unable to protect the confidentiality of our know-how or trade secrets, our business and competitive position would be harmed.

Our competitors may independently develop knowledge, methods, and know-how equivalent to our trade secrets. Competitors could purchase our products and replicate some or all of the competitive advantages we derive from our development efforts for technologies on which we do not have patent protection. If any of our trade secrets were to be lawfully obtained or independently developed by a competitor or third party, we would have no right to prevent them, or those to whom they communicate such trade secrets, from using that technology or information to compete with us. If any of our trade secrets were to be disclosed to or independently developed by a competitor, or if we otherwise lose protection for our trade secrets, the value of this information may be greatly reduced, and our competitive position would be harmed.

We also seek to preserve the integrity and confidentiality of our data and other confidential information by maintaining physical security of our premises and physical and electronic security of our information technology systems. While we have confidence in these individuals, organizations and systems, agreements or security measures may be breached, and detecting the disclosure or misappropriation of confidential information and enforcing a claim that a party illegally disclosed or misappropriated confidential information is difficult, expensive and time-consuming, and the outcome is unpredictable. Further, we may not be able to obtain adequate remedies for any breach. In addition, our confidential information may otherwise become known or be independently discovered by competitors, in which case we would have no right to prevent them, or those to whom they communicate it, from using that technology or information to compete with us.

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If our trademarks are not adequately protected, then we may not be able to build name recognition in our markets of interest, resulting in harm to our business.

We have registered trademarks and pending trademark applications in the United States and various foreign jurisdictions for our marks related to our business. We have not yet selected trademarks for our product candidates and have not yet begun the process of applying to register trademarks for any of our current or future product candidates. Whether allowed or registered, our trademarks and trade names may be challenged, we could be forced to rebrand our products, which could result in loss of brand recognition and could require us to devote resources to advertising and marketing new brands. Our competitors may infringe our trademarks, or adopt trademarks similar to ours, and there may be trademark infringement claims brought by owners of other registered trademarks or trademarks that incorporate variations of our registered or unregistered trademarks, and we may not have adequate resources to enforce our rights in such trademarks. Over the long term, if we are unable to establish name recognition based on our trademarks, then we may not be able to compete effectively, and our competitive position, business, financial condition, results of operations and prospects may be significantly harmed.

In addition, any proprietary name we propose to use with our current or any other product candidates in the United States must be approved by the FDA, regardless of whether we have registered it, or applied to register it, as a trademark. The FDA typically conducts a review of proposed product names, including an evaluation of the potential for confusion with other product names. If the FDA objects to any of our proposed proprietary product names, we may be required to expend significant additional resources in an effort to identify a suitable proprietary product name that would qualify under applicable trademark laws, not infringe the existing rights of third parties and be acceptable to the FDA.

Intellectual property rights do not necessarily address all potential threats to the competitive advantages maintained by our business.

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have limitations and may not adequately protect our business or permit us to maintain our competitive advantage. For example:

● others may be able to make compounds or formulations that are similar to our product candidates but that are not covered by the claims of any patents, should they issue, that we own or license;

● we or our licensors might not have been the first to make the inventions covered by the issued patents or pending patent applications that we own or license;

● we or our licensors might not have been the first to file patent applications covering certain of our or their inventions;

● others may independently develop similar or alternative technologies or duplicate any of our technologies without infringing our intellectual property rights;

● we or our licensors may not be able to detect infringement of issued patents we own or license;

● it is possible that pending patent applications we own or in-license will not lead to issued patents;

● issued patents that we own or license may not provide us with any competitive advantages, or may be held invalid or unenforceable as a result of legal challenges;

● issued patents that we own or license may not have sufficient term or geographic scope to provide meaningful protection;

● our competitors might conduct research and development activities in the United States and other countries that provide a safe harbor from patent infringement claims for certain research and development activities, as well as in countries where we do not have patent rights, and then use the information learned from such activities to develop competitive drugs for sale in our major commercial markets;

● we may not develop additional proprietary technologies that are patentable;

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● the patents of others may have an adverse effect on our business; and

● we may choose not to file a patent to maintain certain trade secrets, and a third party may subsequently file a patent covering such intellectual property.

Should any of these events occur, it could significantly harm our business, financial condition, results of operation and prospects.

Risks related to our business operations, employee matters and managing growth

We plan to expand our organization, and we may experience difficulties in managing this growth, which could disrupt our operations.

As of December 31, 2022, we had 69 full-time employees. As the clinical development of our product candidates progresses, we expect to experience significant growth in the number of our employees and the scope of our operations, particularly in the areas of research, drug development, regulatory affairs and, if any of our product candidates receives marketing approval, sales, marketing and distribution. To manage our anticipated future growth, we must continue to implement and improve our managerial, operational and financial systems, expand our facilities, and continue to recruit and train additional qualified personnel. The expansion of our operations may lead to significant costs and may divert our management and business development resources. Any inability to manage growth could delay the execution of our business plans or disrupt our operations.

We are and expect to continue to be reliant on third parties for key aspects of our business and operations, including our existing and future research, manufacturing and supply. If such parties fail to adequately perform or we are not able to maintain our current relationships or enter new strategic relationships which such third parties, our business, financial condition, commercialization prospects and results of operations may be adversely affected.

We are reliant on third parties for key aspects of our business and operations, including the development our existing and future research programs and product candidates, implementation and management of our clinical trials, and manufacturing and supply of our products and product candidates. Reliance on third parties exposes us to additional risks and uncertainties that may not exist if we were able to manage such aspects of our business ourselves.

We are currently a party to a research collaboration and license agreement (Janssen Agreement) with Janssen Biotech, Inc. (Janssen), for the potential discovery and development of multi-specific antibody products that are directed to a specified target in all fields of use. We also intend to explore other strategic partnerships to broaden our Gammabody platform. Because we do not own any facility that may be used as our clinical or commercial-scale manufacturing and processing facility, we expect to rely on third parties for at least a portion of our manufacturing process. In addition, we have a commercial supply agreement for the manufacturing of LAVA-051 with a global contract manufacturer. Reliance on such third parties and other manufacturers and suppliers may pose several risks, including that such third parties:

● may not have sufficient resources or devote the necessary resources to our relationship due to internal constraints such as budget limitations, lack of human resources, or a change in strategic focus;

● may believe our intellectual property is not valid or is unenforceable, or that the product candidates subject to the arrangement infringes, misappropriates or otherwise violates the intellectual property rights of others;

● may dispute their responsibility to conduct development and commercialization activities, including the payment of related costs or the division of any revenues;

● may decide to pursue a competitive product developed outside of the collaboration arrangement;

● may not be able to obtain, or believe they cannot obtain, the necessary regulatory approvals or certifications or comply with cGMP requirements;

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● may experience challenges in manufacturing to our specifications and in compliance with regulatory requirements; or

● may delay the development or commercialization of our product candidates in favor of developing or commercializing another party’s product candidate.

In addition, we may not be able to negotiate commercial arrangements with any of such parties on acceptable terms, if at all. Our ability to reach a definitive agreement for a collaboration, clinical development, manufacturing or supply will depend, among other things, upon our assessment of the third party’s resources and expertise, the terms and conditions of the proposed commercial relationship and the proposed third party’s evaluation of a number of factors. If we are unable to reach agreements with suitable third parties on a timely basis, on acceptable terms, or at all, we may have to curtail the development of a product candidate, reduce or delay one or more of our other development programs, delay our potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to fund and undertake development or commercialization activities on our own, we may need to obtain additional expertise and additional capital, which may not be available to us on acceptable terms or at all.

We are unable to predict when, if ever, we will enter into any such relationships because of the numerous risks and uncertainties associated with establishing them, including:

● expenditure of substantial operational, financial and management resources;

● dilutive issuances of our securities to such third parties;

● substantial actual or contingent liabilities; and

● termination or expiration of the arrangement, which would delay the development and may increase the cost of developing our product candidates.

We may also be subject to further risks if our third-party providers do not properly maintain, enforce or defend our intellectual property rights or may use our proprietary information in a manner that could jeopardize or invalidate our proprietary information or expose us to potential litigation, any of which could adversely affect our business, financial position and operations.

All the risks relating to product development, regulatory approval and commercialization applicable to us, including those described in this “Risk Factors” section, also apply to the activities of our program collaborators. Additionally, subject to its contractual obligations to us, if one of our collaborators is involved in a business combination, the collaborator may deemphasize or terminate the development or commercialization of any product candidate licensed to it by us. If our collaborator terminates its agreement with us, we may find it more difficult to attract new collaborators, which could negatively impact our ability to develop or commercialize such product candidate.

If our collaboration with Seagen is delayed or terminated, or if Seagen materially breaches its obligations thereunder, it could cause significant delays in the development efforts of the Gammabody platform.

Our financial performance may be significantly harmed if the collaboration with Seagen to develop SGN-EGFRd2 (LAVA-1223), an investigational candidate targeting epidermal growth factor receptor (EGFR), is delayed or terminated. Under the Seagen Agreement, Seagen paid us a non-refundable upfront payment of $50.0 million and has the option to obtain exclusive rights to two (2) additional targets, subject to an option payment for each product candidate. If Seagen exercises its option on a given product candidate, we will develop such target candidate. We also have an option to elect to co-fund SGN-EGFRd2 (LAVA-1223), at a certain opt-in price at a designated time pursuant to the Seagen Agreement. Additionally, we will be entitled to royalties on any future sales of such products by Seagen. If Seagen were to terminate our collaboration agreement, we may not have the resources or skills to replace those of our collaborator, which could require us to seek additional funding or another collaboration that might not be available on favorable terms or at all, and could cause significant delays in development and/or commercialization efforts, including delays in validating our Gammabody platform, and result in substantial additional costs to us. Termination of such

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collaboration agreement or the loss of rights provided to us under such agreement may create substantial new and additional risks to the successful development and commercialization of our products and could materially harm our reputation, financial condition and operating results. It is difficult to predict how Seagen's business strategy will change over time; as of now we have no indication that they will abandon the program, which would effectively end our contract and future milestones. We continue to hold regular governance and team meetings, and Seagen appears engaged in the SGN-EGFRd2 (LAVA-1223) collaboration.

Our business and operations may be adversely affected by economic downturns, inflation, increases in interest rates, natural disasters, public health crises, political crises, geopolitical events, such as the crisis in Ukraine, or other macroeconomic conditions, which could negatively impact our business and financial performance.

The global economy, including credit and financial markets, has experienced extreme volatility and disruptions, including, among other things, severely diminished liquidity and credit availability, declines in consumer confidence, declines in economic growth, supply chain shortages, increases in inflation rates, higher interest rates and uncertainty about economic stability. For example, the COVID-19 pandemic resulted in widespread unemployment, economic slowdown and extreme volatility in the capital markets. The U.S. Federal Reserve recently raised interest rates multiple times in response to concerns about inflation and it may raise them again. Higher interest rates, coupled with reduced government spending and volatility in financial markets may increase economic uncertainty and affect consumer spending. Similarly, the ongoing military conflict between Russia and Ukraine has created extreme volatility in the global capital markets and is expected to have further global economic consequences, including disruptions of the global supply chain and energy markets. Any such volatility and disruptions may adversely affect our business or the third parties on whom we rely. If the equity and credit markets deteriorate, including as a result of political unrest or war, it may make any necessary debt or equity financing more costly or more dilutive or more difficult to obtain in a timely manner or on favorable terms, if at all. Increased inflation rates can adversely affect us by increasing our costs, including labor and employee benefit costs.

Our employees, principal investigators, consultants and commercial partners may engage in misconduct or other improper activities, including noncompliance with regulatory standards, which could adversely affect the development of our product candidates and our business.

We are exposed to the risk of fraud or other misconduct by our employees, collaborators, principal investigators, consultants, commercial partners and outside actors. Misconduct by these parties could include intentional failures to comply with FDA regulations or the regulations applicable in other jurisdictions, provide accurate information to the FDA and other regulatory authorities, comply with healthcare fraud and abuse laws and regulations in the United States and abroad, report financial information or data accurately or disclose unauthorized activities to us. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs, and other business arrangements. Such misconduct also could involve the improper use of information obtained during clinical trials or interactions with the FDA or other regulatory authorities, which could result in regulatory sanctions and cause serious harm to our reputation. We have adopted a code of conduct applicable to all our employees, but it is not always possible to identify and deter employee misconduct, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from government investigations or other actions or lawsuits stemming from a failure to comply with these laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, financial condition, results of operations and prospects, including the imposition of significant fines or other sanctions.

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If the security of the personal information that we (or our vendors, clinical investigators, CROs, collaborators, contractors, or consultants) collect, store or process is compromised or is otherwise accessed without authorization, or if we fail to comply with our commitments and assurances regarding the privacy and security of such information, our reputation may be harmed and we may be exposed to liability and loss of business.

Our internal computer systems, cloud-based computing services and those of our current and any future vendors, clinical investigators, CROs, collaborators, contractors, or consultants, are vulnerable to damage or interruption from natural disasters, fire, power loss, telecommunications failures, server malfunction, software or hardware failures, traditional computer “hackers,” malicious code (such as viruses and worms), phishing attacks, employee theft or misuse, denial-of-service attacks, adware, malware installation, sophisticated nation-state and nation-state supported actors and other cyberattacks. Cyberattacks and other malicious internet-based activity continue to increase in frequency, sophistication and intensity, and are becoming increasingly difficult to detect.

We have conducted information security audits or evaluations on our internal computer systems, but we cannot guarantee that our or our vendors’, clinical investigators’, CROs’, collaborators’, contractors’, or consultants’ security measures will be sufficient to protect against unauthorized access to, or other compromise of, our systems and our confidential, financial or proprietary data, including personal information, which is stored in or otherwise processed by such systems. Since the COVID-19 pandemic, many of our employees continue to work remotely on a part-time basis, which may pose additional data security risks. While we have security measures in place designed to protect our confidential and proprietary information and prevent data loss and other security breaches, there can be no assurance that our security measures or those of our third-party service providers that store or otherwise process certain of our confidential, financial or proprietary data on our behalf will be effective in protecting against unauthorized access to our platform or such data, particularly given that our ability to monitor our third-party service providers’ data security is limited.

The techniques used to sabotage or to obtain unauthorized access to our or our third party service providers’ platform, systems, networks and/or physical facilities in which data is stored or through which data is transmitted change frequently, may not be recognized until launched, and can originate from a wide variety of sources, and we and our third-party services providers may be unable to implement adequate preventative measures or stop security breaches while they are occurring. The recovery systems, security protocols, network protection mechanisms and other security measures that we have integrated into our platform, systems, networks and physical facilities, which are designed to protect against, detect and minimize security breaches, may not be adequate to prevent or detect service interruption, system failure or data loss. Our platform, systems, networks, and physical facilities could be breached, or confidential or proprietary information could be otherwise compromised due to employee error or malfeasance, third parties may also exploit vulnerabilities in, or obtain unauthorized access to, platforms, systems, networks and/or physical facilities utilized by our third-party service providers.

If a cyberattack or other security incident were to occur and cause interruptions in our operations, it could result in a disruption of our development programs and our business operations, whether due to a loss of our trade secrets or other confidential or proprietary information or other similar disruptions. For example, the loss of clinical trial data could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. The costs to respond to a security breach and/or to mitigate any security vulnerabilities that may be identified could be significant, our efforts to address these issues may not be successful, and these issues could result in interruptions, delays, cessation of service, negative publicity, loss of public trust, delays in the development and commercialization of our product candidates. Any security breach may also result in regulatory inquiries or action, litigation, or other investigations, fines, penalties, and damages, any of which can affect our financial and operational condition.

Failure to prevent or mitigate cyberattacks could result in unauthorized access to our confidential and proprietary data, including personal information. Most jurisdictions have enacted laws requiring companies to notify individuals, regulatory authorities, and others of security breaches involving certain types of data. In addition, our agreements with certain counterparties and partners may require us to notify them in the event of a security breach. Such mandatory disclosures are costly, could lead to negative publicity, may cause the

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public to lose confidence in the effectiveness of our security measures and require us to expend significant capital and other resources to respond to and/or alleviate problems caused by an actual or perceived security breach.

Further, security compromises experienced by our collaborators, business partners, patients or employees with respect to data hosted on our platform, internal computer systems, and/or cloud-based computing services, even if caused by third-party misuse or negligence, may lead to loss, unauthorized access, or public disclosures of such data, which could harm our reputation, erode confidence in the effectiveness of our security measures, negatively impact our ability to attract new collaborators or other business relationships, or cause existing contractual counterparties to elect not to renew their agreements with us. Any data breach by service providers that are acting as data processors and processing personal information on our behalf could also mean that we are subject to these fines and must comply with the notification obligations set out above.

Unauthorized access to our platform, systems, networks, or physical facilities could result in litigation with or liabilities to our contractual counterparties or other relevant stakeholders, which may adversely affect our business. While we maintain cybersecurity insurance, we could still be required to spend money in defense or settlement, divert management’s time or attention, fundamentally change our business activities and practices or modify our products and/or platform capabilities, which could have an adverse effect on our business. Litigation could also increase our costs of doing business or adversely affect our reputation.

Our risks are likely to increase as we continue to expand, and process, store, and transmit increasingly large amounts of proprietary and sensitive data.

We may be classified as a passive foreign investment company (PFIC) for U.S. federal income tax purposes, which could result in adverse U.S. federal income tax consequences to U.S. investors in the common shares.

Based on the estimated composition of our income, assets and operations, we do not believe that we were classified as a PFIC for U.S. federal income tax purposes for the taxable year ended December 31, 2022. A non-U.S. company will be considered a PFIC for any taxable year if (i) at least 75% of its gross income is passive income (including interest income), or (ii) at least 50% of the value of its assets (generally based on an average of the quarterly values of the assets during a taxable year) is attributable to assets that produce or are held for the production of passive income. In addition, for purposes of the above calculations, a non-U.S. corporation that directly or indirectly owns at least 25% by value of the shares of another corporation is treated as if it held its proportionate share of the assets and received directly its proportionate share of the income of such other corporation. The value of our assets generally is determined by reference to the market price of our common shares, which may fluctuate considerably. In addition, the composition of our income and assets is affected by how, and how quickly, we spend the cash we raise. If we were to be treated as a PFIC for any taxable year during which a U.S. Holder (as defined in the section entitled “Material U.S. Federal Income Tax Considerations for U.S. Holders” hereof) held a common share, certain adverse U.S. federal income tax consequences could apply to such U.S. Holder, including (1) the treatment of all or a portion of any gain on disposition of a common share as ordinary income, (2) the application of an interest charge with respect to such gain and certain dividends and (3) compliance with certain reporting requirements. See the section titled “Material U.S. Federal Income Tax Considerations for U.S. Holders.”

There are risks inherent in our business that may subject us to potential product liability suits and other claims, which may require us to engage in expensive and time-consuming litigation or pay substantial damages and may harm our reputation, which could negatively impact our business.

Our business exposes us to product liability risks, which are inherent in the testing, clinical development, manufacturing, marketing and sale of biopharmaceutical products. For example, we may be sued if any product or product candidate we develop allegedly causes or is perceived to cause injury or is found to be otherwise unsuitable during product testing, clinical development, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability and a breach or violation of warranties and/or trademarks. Claims could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit

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commercialization of our products. Even a successful defense would require significant financial and management resources.

Regardless of merit or eventual outcome, product liability or other claims may, among other things, result in:

● decreased demand for any approved products;

● injury to our reputation and significant negative media attention;

● withdrawal of clinical trial participants or cancellation of clinical trials;

● costs to defend the related litigation;

● a diversion of management’s time and our resources;

● substantial monetary awards to clinical trial participants or patients;

● regulatory investigations, product recalls, withdrawals or labeling, marketing or promotional restrictions;

● exhaustion of any available insurance and our capital resources;

● loss of revenue;

● a potential decrease in our share price; and

● the inability to commercialize any products we develop.

Our inability to obtain and maintain sufficient product liability insurance at an acceptable cost and scope of coverage to protect against potential product liability claims could prevent or inhibit the commercialization of our products. We obtained product liability insurance covering our clinical trials with policy limits that we believe are customary for similarly situated companies and adequate to provide us with coverage for foreseeable risks. Although we maintain such insurance, any claim that may be brought against us could result in a court judgment or settlement in an amount that is not covered, in whole or in part, by our insurance or that is in excess of the limits of our insurance coverage. Moreover, in the future, we may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses. If we determine that it is prudent to increase our product liability coverage due to the commercial launch of any approved product, we may be unable to obtain such increased coverage on acceptable terms, or at all. Our insurance policies also have various exclusions and deductibles, and we may be subject to a product liability claim for which we have no coverage. We will have to pay any amounts awarded by a court or negotiated in a settlement that exceed our coverage limitations or that are not covered by our insurance, and we may not have, or be able to obtain, sufficient capital to pay such amounts.

Our business involves the use of hazardous materials and we and our third-party manufacturers and suppliers must comply with environmental, health and safety laws and regulations, which can be expensive and restrict or interrupt our business.

Our research and development activities and our third-party manufacturers’ and suppliers’ activities involve the generation, storage, use and disposal of hazardous materials, including the components of our product candidates, such as genetically modified cells, and other hazardous compounds and wastes. We and our manufacturers and suppliers are subject to environmental, health and safety laws and regulations governing, among other matters, the use, manufacture, generation, storage, handling, transportation, discharge and disposal of these hazardous materials and wastes and worker health and safety. In some cases, these hazardous materials and various wastes resulting from their use are stored at our and our manufacturers’ facilities pending their use and disposal. We cannot eliminate the risk of contamination or injury, which could result in an interruption of our commercialization efforts, research and development efforts and business operations, damages and significant cleanup costs and liabilities under applicable environmental, health and safety laws and regulations. We also cannot guarantee that the safety procedures utilized by our third-party manufacturers for handling and disposing of these materials and wastes generally comply with the standards prescribed by these laws and regulations. We may be held liable for any resulting damages costs or liabilities, which could exceed our resources, and state or federal or other applicable authorities may curtail our use of certain materials and/or interrupt our business operations.

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Furthermore, environmental, health and safety laws and regulations are complex, change frequently and have tended to become more stringent and enforcement is prioritized. We cannot predict the impact of such changes and cannot be certain of our future compliance. We may be required to incur substantial expenses in connection with current and future environmental, health and/ or safety compliance, in which case, our production and development efforts may be interrupted or delayed and our financial condition and results of operations may be materially adversely affected. Failure to comply with these environmental, health and safety laws and regulations may result in substantial fines, penalties or other sanctions. We do not currently carry hazardous waste insurance coverage.

Risks related to regulatory compliance

The regulatory approval process of the FDA, EMA and other comparable foreign regulatory authorities are lengthy and time-consuming, and we may experience significant delays in the clinical development and regulatory approval of our product candidates.

Of the large number of products in development, only a small percentage successfully complete the FDA, EMA or comparable regulatory authorities’ approval processes and are commercialized. The lengthy approval or marketing authorization process as well as the unpredictability of future clinical trial results may result in our failing to obtain regulatory approval or marketing authorization to market LAVA-051, LAVA-1207 or our other or future product candidates, which would significantly harm our business, financial condition, results of operations and prospects.

We may face unforeseen challenges in our product candidate development strategy, and we can provide no assurances that our product candidates or clinical trial design will prove to be effective, that we will be able to take advantage of abbreviated regulatory pathways for any of our product candidates, or that we will ultimately be successful in our future clinical trials. We may request regulatory approval of LAVA-051, LAVA-1207 and future product candidates by target, regardless of cancer type or origin, which the FDA or other regulatory authorities may have difficulty accepting if our clinical trials only involved cancers of certain origins. Accordingly, the regulatory approval pathway for our product candidates may be uncertain, complex, expensive and lengthy, and approval may not be obtained.

We currently anticipate initially seeking regulatory approvals in the United States and Europe but may in the future submit applications for the regulatory approval of LAVA-051, LAVA-1207 or our product candidates to additional regulatory authorities. It is possible that neither our current product candidates nor any product candidates we may seek to develop in the future will obtain regulatory approval. Neither we nor any of our partners are permitted to market any of our product candidates in the United States or abroad until we receive regulatory approval from the FDA, EMA or the applicable regulatory agency.

We could also encounter delays if our investigators encounter unresolved ethical issues associated with enrolling participants in clinical trials of our product candidates in lieu of prescribing existing treatments that have established safety and efficacy profiles. Many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may ultimately lead to the denial of regulatory approval of our product candidates.

If we are successful in obtaining regulatory approvals for LAVA-051, LAVA-1207 or other product candidates, we will be subject to ongoing regulatory oversight.

Our product candidates, if approved, could be contingent on the performance of costly additional clinical trials, including post-market clinical trials, for a more limited indication or patient population than we originally request, and may not be approved or authorized with the labeling that we believe is necessary or desirable for the successful commercialization of a product candidate. Any delay in obtaining, or inability to obtain, applicable regulatory approval or other marketing authorization would delay or prevent commercialization of that product candidate, which would adversely impact our business and prospects.

We will be subject to ongoing regulatory requirements for manufacturing, labeling, packaging, storage, advertising, promotion, sampling, record keeping, submission of safety and other post-market information and continual review and periodic inspections by the FDA and other regulatory authorities for compliance with cGMP requirement if LAVA-051, LAVA-1207 or other product candidates are approved. Any regulatory approvals that we receive for our product candidates may also be subject to a Risk Evaluation and Mitigation

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Strategy (REMS) to ensure that the benefits of treatment with such product candidate outweigh the risks for each potential patient, which may include, among other things, a communication plan to health care practitioners, patient education, extensive patient monitoring or distribution systems and processes that are highly controlled, restrictive and more costly than what is typical for the industry, We or our collaborators may also be required to engage in similar action such as patient education, certification of health care professionals or specific monitoring. A REMS may also be required to limit the approved indicated uses for which the product candidate may be marketed or to the conditions of approval, or may contain requirements for potentially costly post-marketing testing, including Phase 4 trials, and for surveillance to monitor the quality, safety and efficacy of the product candidate. Such regulatory requirements may differ from country to country depending on where we have received regulatory approval. Compliance with such ongoing regulatory requirements is costly and requires the implementation and maintenance of extensive controls, procedures, and time commitments by our personnel.

If we, or a regulatory authority, discover previously unknown problems with a product candidate, such as adverse events of unanticipated severity or frequency, or problems with the facility where the product candidate is manufactured or if a regulatory authority disagrees with the promotion, marketing or labeling of that product candidate, a regulatory authority may impose restrictions relative to that product candidate, the manufacturing facility or us, including requesting a recall or requiring withdrawal of the product candidate from the market or suspension of manufacturing.

If we fail to comply with applicable regulatory requirements following approval of our product candidates, a regulatory authority may, among other things, issue warning letters or untitled letters, mandate modifications to promotional materials or require us to provide corrective information to healthcare practitioners, or require other restrictions on the labeling or marketing of such products, require us to enter into a consent decree, which can include imposition of various fines, reimbursements for inspection costs, required due dates for specific actions and penalties for noncompliance, seek an injunction or impose administrative, civil or criminal penalties or monetary fines, suspend or modify any ongoing clinical trials, or suspend, modify withdraw regulatory approval or restrict the marketing or manufacturing of the product candidate. If any of the foregoing actions occurs, it would negatively affect our business, financial condition and results of operations.

Moreover, the FDA and other regulatory authorities strictly regulate the promotional claims that may be made about biologic products. In particular, a product may not be promoted for uses that are not approved by the FDA as reflected in the product’s approved labeling. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant civil, criminal and administrative penalties.

The FDA’s and other regulatory authorities’ policies may change and additional government regulations may be enacted that could prevent, limit or delay regulatory approval of our product candidates. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative or executive action, either in the United States or abroad.

Even if a product candidate receives marketing approval, it may fail to achieve market acceptance by physicians, patients, third-party payors or others in the medical community necessary for commercial success.

Even if any product candidate receives marketing approval, it may fail to gain market acceptance by physicians, patients, third-party payors and others in the medical community. If any such product candidate does not achieve an adequate level of acceptance, we may not generate significant product revenue and may not become profitable. The degree of market acceptance of any product candidate, if approved for commercial sale, will depend on a number of factors, including but not limited to:

● the cost, efficacy, safety profile, convenience, ease of administration and other potential advantages compared to alternative treatments and therapies;

● the willingness of the target patient population to try new therapies and of physicians to prescribe these therapies;

● the strength of our relationships with patient communities;

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● the availability of third-party coverage and adequate reimbursement and patients’ willingness to pay out-of-pocket in the absence of such coverage and adequate reimbursement;

● the prevalence and severity of any side effects; and

● any restrictions on the use of the product candidate together with other medications.

Our efforts to educate physicians, patients, third-party payors and others in the medical community on the benefits of our product candidates may require significant resources and may never be successful. Such efforts may require more resources than are typically required due to the complexity and uniqueness of our product candidates. Because we expect sales of our product candidates, if approved, to generate substantially all of our revenues for the foreseeable future, the failure of our product candidates to find market acceptance would harm our business.

We have sought and may continue to seek orphan drug designation for some or all of our current or future product candidates and may be unsuccessful or may be unable to maintain the benefits associated with orphan drug designation, including the potential for supplemental market exclusivity.

Regulatory authorities in some jurisdictions, including the United States and Europe, may designate drugs or biologics for relatively small patient populations as orphan drugs. Under the Orphan Drug Act, the FDA may grant orphan designation to a drug intended to treat a rare disease or condition, defined as a disease or condition with a patient population of fewer than 200,000 in the United States, or a patient population greater than 200,000 in the United States when there is no reasonable expectation that the cost of developing and making available the drug in the United States will be recovered from sales in the United States for that drug. The criteria for designating an “orphan medicinal product” in the European Union are similar in principle to those in the United States. Regulation (EC) No. 141/2000 and Regulation (EC) No. 847/2000 provide that a product can be designated as an orphan drug by the European Commission if its sponsor can establish: that the product is intended for the diagnosis, prevention or treatment of (1) a life-threatening or chronically debilitating condition affecting not more than five in ten thousand persons in the European Union when the application is made, or (2) a life-threatening, seriously debilitating or serious and chronic condition in the European Union and that without incentives it is unlikely that the marketing of the drug in the European Union would generate sufficient return to justify the necessary investment.

Orphan medicinal product status in the European Union can provide up to 10 years of marketing exclusivity, meaning that another application for marketing authorization of a later similar medicinal product for the same therapeutic indication will generally not be approved in the European Union. Although we may have drug candidates that may obtain orphan drug exclusivity in Europe, the orphan approval and associated exclusivity period may be modified for several reasons, including a significant change to the orphan medicinal product designations or approval criteria after-market authorization of the orphan product (e.g., product profitability exceeds the criteria for orphan drug designation), problems with the production or supply of the orphan drug or a competitor drug, although similar, is safer, more effective or otherwise clinically superior than the initial orphan drug.

If a product that has orphan drug designation subsequently receives the first FDA approval for a particular active ingredient for the disease for which it has such designation, the product is entitled to orphan product exclusivity, which means that the FDA may not approve any other applications, including a BLA, to market the same product for the same indication for seven years, except in limited circumstances such as a showing of clinical superiority to the product with orphan drug exclusivity or if the FDA finds that the holder of the orphan drug exclusivity has not shown that it can assure the availability of sufficient quantities of the orphan drug to meet the needs of patients with the disease or condition for which the drug was designated. As a result, even if one of our product candidates receives orphan exclusivity, the FDA can still approve other products that have a different active ingredient for use in treating the same indication or disease. Further, the FDA can waive orphan exclusivity if we are unable to manufacture sufficient supply of our product.

We received orphan drug designation for LAVA-051 for CLL and may seek orphan drug designation for our other indications for LAVA-051 or other current or future product candidates. Even when we obtain orphan drug designation, exclusive marketing rights in the United States may be limited if we seek approval for an indication broader than the orphan designated indication and may be lost if the FDA later determines that the

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request for designation was materially defective or if we, through our manufacturer, are unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or condition. In addition, although we intend to seek orphan drug designation for other product candidates, we may never receive these designations.

We may not elect or be able to take advantage of any expedited development or regulatory review and approval processes available to product candidates granted breakthrough therapy or fast track designation by the FDA.

We intend to evaluate and engage in discussions with the FDA on regulatory strategies that could enable us to take advantage of expedited development pathways for our current product candidates or future product candidates, although we cannot be certain that any such products will qualify for any expedited development pathways or that regulatory authorities will grant, or allow us to maintain, the relevant qualifying designations. Potential expedited development pathways that we could pursue include breakthrough therapy and fast track designation.

Breakthrough therapy designation is intended to expedite the development and review of products that treat serious or life-threatening diseases when preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. The designation of a product candidate as a breakthrough therapy provides potential benefits that include intensive guidance on an efficient drug development program, beginning as early as Phase 1, organizational commitment involving senior managers; and eligibility for rolling review and priority review. Breakthrough therapy designation does not change the standards for product approval. There can be no assurance that we will receive breakthrough therapy designation for any product candidate or any particular indication.

We may also seek fast track designation. If a drug or biologic candidate is intended for the treatment of a serious or life-threatening condition or disease and the drug demonstrates the potential to address unmet medical needs for the condition, the sponsor may apply for fast-track designation. Even if we do apply for and receive fast track designation, we may not experience a faster development, review or approval process compared to conventional FDA procedures. The FDA may rescind fast track designation if it believes that the designation is no longer supported by data from our clinical development program.

Additionally, we may also seek accelerated approval under the FDA’s accelerated approval programs. The FDA may approve a drug or biologic for a serious or life-threatening disease or condition that generally provides meaningful advantages over available treatments and demonstrates an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments.

Seeking and obtaining these designations is dependent upon results of our clinical program, and we cannot guarantee whether and when we may have the data from our clinical programs to support an application to obtain any such designation. The FDA and comparable foreign regulatory agencies have broad discretion whether to grant any of these or similar designations, so even if we believe a particular product candidate is eligible for one or more of these designations, we cannot assure you that the applicable regulatory authority would decide to grant it. Even if we do receive the designations we may apply for, we may not experience a faster development process, review or approval compared to conventional procedures, as applicable. The FDA or other regulatory agencies may also rescind any granted designations if it believes that the designation is no longer supported by data from our clinical development program.

We expect the product candidates we develop will be regulated as biologics, and therefore they may be subject to competition sooner than anticipated.

The Biologics Price Competition and Innovation Act of 2009 (BPCIA) was enacted as part of the Affordable Care Act to establish an abbreviated pathway for the approval of biosimilar and interchangeable biological products. The regulatory pathway establishes legal authority for the FDA to review and approve biosimilar

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biologics, including the possible designation of a biosimilar as “interchangeable” based on its similarity to an approved biologic. Under the BPCIA, an application for a biosimilar product cannot be approved by the FDA until 12 years after the reference product was approved under a BLA. The law is complex and is still being interpreted and implemented by the FDA. As a result, its ultimate impact, implementation, and meaning are subject to uncertainty. While it is uncertain when processes intended to implement BPCIA may be fully adopted by the FDA, any of these processes could have a material adverse effect on the future commercial prospects for our biological products.

We believe that any of the product candidates we develop that is approved in the United States as a biological product under a BLA should qualify for the 12-year period of exclusivity. However, there is a risk that this exclusivity could be shortened due to congressional action or otherwise, or that the FDA will not consider the subject product candidates to be reference products for competing products, potentially creating the opportunity for generic competition sooner than anticipated. Moreover, the extent to which a biosimilar, once approved, will be substituted for any one of the reference products in a way that is similar to traditional generic substitution for non-biological products is not yet clear, and will depend on a number of marketplace and regulatory factors that are still developing.

In addition, the approval of a biologic product biosimilar to one of our products could have a material adverse impact on our business as it may be significantly less costly to bring to market and may be priced significantly lower than our products.

Our relationships with customers, physicians, and third-party payors will be subject, directly or indirectly, to federal and state healthcare fraud and abuse laws, including anti-kickback and false claims laws, transparency laws, local and foreign environmental and safety laws, and other healthcare laws and regulations. If we are unable to comply, or have not fully complied, with such laws, we could face substantial penalties.

Healthcare providers, including physicians, and third-party payors in the United States and elsewhere will play a primary role in the recommendation and prescription of any product candidates for which we obtain marketing approval. Our current and future arrangements with healthcare professionals, principal investigators, consultants, customers and third-party payors subject us to various federal and state fraud and abuse laws and other healthcare laws, including, without limitation, the federal Anti-Kickback Statute, the federal civil and criminal false claims laws and the law commonly referred to as the Physician Payments Sunshine Act and regulations. For additional information on the healthcare laws and regulations that we may be subject to, see section titled “Information about the Company—Government Regulation.”

Ensuring that our business arrangements with third parties comply with applicable healthcare laws and regulations will likely be costly. It is possible that governmental authorities will conclude that our business practices, including our relationships with physicians, some of whom are compensated with a stipend or share options for services performed for the Company, may not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, disgorgement, imprisonment, exclusion from participating in government-funded healthcare programs, such as Medicare and Medicaid, additional reporting requirements and oversight if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of noncompliance with these laws, contractual damages, reputational harm and the curtailment or restructuring of our operations. If the physicians or other providers or entities with whom we expect to do business are found not to be in compliance with applicable laws, they may be subject to significant criminal, civil or administrative sanctions, including exclusions from government-funded healthcare programs.

Coverage and adequate reimbursement may not be available for our product candidates, which could make it difficult for us to sell profitably, if approved.

Market acceptance and sales of any product candidates that we commercialize, if approved, will depend in part on the extent to which reimbursement for these products and related treatments will be available from third-party payors, including government health administration authorities, managed care organizations and other private health insurers. Third-party payors decide which therapies they will pay for and establish

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reimbursement levels. While no uniform policy for coverage and reimbursement exists in the United States, third-party payors often rely upon Medicare coverage policy and payment limitations in setting their own coverage and reimbursement policies. However, decisions regarding the extent of coverage and amount of reimbursement to be provided for any product candidates that we develop will be made on a payor-by-payor basis. Therefore, one payor’s determination to provide coverage for a product does not assure that other payors will also provide coverage, and adequate reimbursement, for the product. Patients are unlikely to use our products unless coverage is provided and reimbursement is adequate to cover a significant portion of the cost of our products. Additionally, we or our collaborators may develop companion diagnostic tests for use with our product candidates. We or our collaborators will be required to obtain coverage and reimbursement for these tests separate and apart from the coverage and reimbursement we seek for our other product candidates, once approved.

Healthcare legislative reform measures may have a negative impact on our business and results of operations.

In the United States and some foreign jurisdictions, there have been, and continue to be, legislative and regulatory changes to the healthcare delivery and reimbursement system that could prevent or delay marketing approval of product candidates, restrict or regulate post-approval activities, and affect our ability to profitably sell any product candidates for which we obtain marketing approval. There have been and continue to be a number of initiatives at the federal and state levels in the United States that seek to reduce healthcare costs and improve the quality of healthcare.

For example, the Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act of 2010, or, collectively, the ACA, substantially changed the way healthcare is financed by both governmental and private payors in the United States and increased access to health care coverage for individuals. Since its enactment, there have been executive, judicial and Congressional challenges to the ACA. Most of the ACA survived such challenges but further healthcare reform measures of the Biden administration may impact the ACA or our business. On August 16, 2022, President Biden signed the Inflation Reduction Act of 2022 (IRA) into law, which, among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in ACA marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and creating a new manufacturer discount program. We continue to evaluate the effect that changes to the ACA and other reforms may have on our business. Complying with any new legislation or reversing changes implemented under the ACA could be time-intensive and expensive, resulting in a material adverse effect on our business.

Other legislative changes have been adopted since the ACA was enacted. These changes include, among other things, aggregate reductions to Medicare payments to providers of 2% per fiscal year pursuant to the Budget Control Act of 2011, which began in 2013, and due to subsequent legislative amendments to the statute, including the BBA, which will remain in effect through 2030 unless additional Congressional action is taken. Under current legislation, the actual reduction in Medicare payments will vary from 1% in 2022 to up to 4% in the final fiscal year of this sequester. The American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to several providers, including hospitals and cancer treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years.

Additional changes that may affect our business include the expansion of new programs such as Medicare payment for performance initiatives for physicians under the Medicare Access and CHIP Reauthorization Act of 2015. At this time, it is unclear how the introduction of the Medicare quality payment program will impact overall physician reimbursement.

Further, in the United States there has been heightened governmental scrutiny over the manner in which manufacturers set prices for their marketed products, which has resulted in several Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to drug pricing, reduce the cost of prescription drugs under government payor programs, and review the relationship between pricing and manufacturer patient programs. For example, the Biden administration announced its intention to pursue certain priority policy initiatives, such as the reduction of

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prescription drug pricing, including legislative proposals to allow the government to negotiate drug prices for Medicare and other governmental health programs, increasing access and coverage for mental health, and lower nursing home care costs. In addition, the IRA, among other things, (i) directs the U.S. Department of Health and Human Services (HHS), to negotiate the price of certain high-expenditure, single-source drugs and biologics covered under Medicare, and subject drug manufacturers to civil monetary penalties and a potential excise tax by offering a price that is not equal to or less than the negotiated “maximum fair price” for such drugs and biologics under the law, and (ii) imposes rebates with respect to certain drugs and biologics covered under Medicare Part B or Medicare Part D to penalize price increases that outpace inflation. The IRA permits HHS to implement many of these provisions through guidance, as opposed to regulation, for the initial years. These provisions will take effect progressively starting in fiscal year 2023, although they may be subject to legal challenges.

It is currently unclear how the IRA will be implemented but is likely to have a significant impact on the pharmaceutical industry. Further, the Biden administration released an additional executive order on October 14, 2022, directing HHS to submit a report on how the Center for Medicare and Medicaid Innovation can be further leveraged to test new models for lowering drug costs for Medicare and Medicaid beneficiaries. It is unclear whether this executive order or similar policy initiatives will be implemented in the future. We expect that additional U.S. federal healthcare reform measures to be adopted in the future, could limit the amounts that the U.S. federal government will pay for healthcare products and services, which could result in reduced demand for our current or any future product candidates or additional pricing pressures. If we or any third parties we may engage are slow or unable to adapt to changes in existing or new requirements or policies, or if we or such third parties are not able to maintain regulatory compliance, our current or any future product candidates we may develop may lose any regulatory approval that may have been obtained and we may not achieve or sustain profitability.

Further, any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability or commercialize our products. For additional information on healthcare reform, see the section titled “Information about the Company—Government Regulation and Product Approval.”

In the EU, similar political, economic and regulatory developments may affect our ability to profitably commercialize current or any future product candidates, if approved. In addition to continuing pressure on prices and cost containment measures, legislative developments at the EU or member state level may result in significant additional requirements or obstacles that may increase our operating costs. In international markets, reimbursement and healthcare payment systems vary significantly by country, and many countries have instituted price ceilings on specific products and therapies. There have been, and likely will continue to be, legislative and regulatory proposals at the foreign, U.S. federal and state levels directed at broadening the availability of healthcare and containing or lowering the cost of healthcare. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability, or commercialize our products. Such reforms could have an adverse effect on anticipated revenue from product candidates that we may successfully develop and for which we may obtain regulatory approval and may affect our overall financial condition and ability to develop product candidates.

European drug marketing and reimbursement regulations may materially affect our ability to market and receive coverage for our products in the European member states.

We intend to seek approval to market our product candidate in the United States as well as select foreign jurisdictions. If we obtain approval in one or more foreign jurisdictions for our product candidates, we will be subject to rules and regulations in those jurisdictions. In some foreign countries, particularly those in Europe, the pricing of biologics is subject to governmental control and other market regulations which could put pressure on the pricing and usage of our product candidate. In these countries, pricing negotiations with governmental authorities can take considerable time after obtaining marketing approval of a product candidate. In addition, market acceptance and sales of our product candidate will depend significantly on the availability of adequate coverage and reimbursement from third-party payors for our product candidate and may be affected by existing and future health care reform measures.

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Much like the Anti-Kickback Statue prohibition in the United States, the provision of benefits or advantages to physicians to induce or encourage the prescription, recommendation, endorsement, purchase, supply, order or use of medicinal products is also prohibited in Europe. The provision of benefits or advantages to physicians is governed by the national anti-bribery laws of European Union member states. Infringement of these laws could result in substantial fines and imprisonment.

Payments made to physicians in certain European Union member states must be publicly disclosed. Moreover, agreements with physicians often must be the subject of prior notification and approval by the physician’s employer, his or her competent professional organization and/or the regulatory authorities of the individual European Union member states. These requirements are provided in the national laws, industry codes or professional codes of conduct, applicable in the European Union Member States. Failure to comply with these requirements could result in reputational risk, public reprimands, administrative penalties, fines or imprisonment.

In addition, in most foreign countries, including in Europe, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements governing drug pricing and reimbursement vary widely from country to country. For example, the European Union provides options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. Reference pricing used by various European Union member states and parallel distribution, or arbitrage between low-priced and high-priced member states, can further reduce prices. A member state may approve a specific price for the medicinal product, or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the medicinal product on the market. In some countries, we may be required to conduct a clinical study or other studies that compare the cost-effectiveness of our product candidate to other available therapies to obtain or maintain reimbursement or pricing approval. There can be no assurance that any country that has price controls or reimbursement limitations for pharmaceutical products will allow favorable reimbursement and pricing arrangements for our product. Historically, products launched in the European Union do not follow price structures of the United States and generally prices tend to be significantly lower. Publication of discounts by third-party payors or authorities may lead to further pressure on the prices or reimbursement levels within the country of publication and other countries. If pricing is set at unsatisfactory levels or if reimbursement of our products is unavailable or limited in scope or amount, our revenues from sales by us or our strategic partners and the potential profitability of our product candidate in those countries would be negatively affected.

We are subject to stringent and changing laws, regulations and standards, and contractual obligations related to data privacy and security. The actual or perceived failure to comply with applicable data protection, privacy and security laws, regulations, standards and other requirements could adversely affect our business, results of operations, and financial condition.

Data privacy and security has become a significant focus in the United States and abroad. The regulatory framework for privacy issues is rapidly evolving and is likely to remain uncertain for the foreseeable future. Many government bodies and agencies have adopted or are considering adopting laws and regulations regarding the collection, use, processing, storage, transmission, destruction, and disclosure of personal information and breach notification procedures. We are also required to comply with laws, rules and regulations relating to data security. Interpretation of these laws, rules and regulations in applicable jurisdictions is ongoing and cannot be fully determined at this time.

In the United States, there are state and federal laws relating to data privacy and security. As we expand our operations, these laws which vary from jurisdiction to jurisdiction, may increase our compliance costs and potential liability. In addition to California, Virginia and Maine, other states are beginning to propose similar laws, which may be the beginning of a trend toward more stringent privacy legislation in the United States that could increase our potential liability and adversely affect our business, results of operations and financial condition.

Compliance with these and any other applicable privacy and data security laws and regulations is a rigorous and time-intensive process, and we may be required to put in place additional mechanisms to ensure compliance with these and new data protection rules. If we fail to comply with any such laws or regulations,

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we may face significant fines and penalties that could adversely affect our business, financial condition and results of operations.

European data protection laws including the General Data Protection Regulation (GDPR) also generally prohibit the transfer of personal information from Europe to the United States and most other non-European Economic Area countries unless the parties to the transfer have implemented specific safeguards to protect the transferred personal information. There is uncertainty regarding how to ensure that transfers of personal information from Europe to the United States comply with the GDPR. As such, any transfers by us, or our vendors, of personal information from Europe may not comply with European data protection laws; may increase our exposure to the GDPR’s heightened sanctions for violations of its cross-border data transfer restrictions; and may reduce demand for our services from companies subject to European data protection laws. Loss of our ability to transfer personal information from Europe may also require us to increase our data processing capabilities in those jurisdictions at significant expense.

As a result of our clinical development, we, our clinical investigators, CROs and consultants may have access to very sensitive data regarding the patients enrolled in our clinical trials, and our current and future product candidates will rely on the use of patient and donor data and material. This data will contain information that is personal in nature, and the maintenance of this data is subject to certain privacy-related laws, such as GDPR, the U.S. Health Insurance Portability and Accountability Act (HIPAA), as amended by the Health Information Technology for Economic and Clinical Health Act and U.S. state privacy laws. These rules inter alia require that written authorizations from patients are obtained and that policies, procedures and reasonable and appropriate security measures are implemented that protect individually identifiable health and other information we receive and to ensure that such information is used only as authorized by the patient. If the patient fails to execute an authorization or the authorization fails to contain all required provisions, then we will not be allowed access to the patient’s information and our research efforts can be substantially delayed. Also, any violations of these rules by us could subject us to civil and criminal penalties and adverse publicity and could harm our ability to initiate and complete clinical trials.

Complying with the GDPR and other related foreign privacy laws and regulations may cause us to incur substantial operational costs or require us to change our business practices. Despite our efforts to bring our practices into compliance with these laws and regulations, we may not be successful in our efforts to achieve compliance either due to internal or external factors such as resource allocation limitations or a lack of vendor cooperation. Any inability to adequately address privacy concerns, even if unfounded, or comply with applicable privacy or data protection laws, regulations and policies, could result in additional cost and liability to us, damage our reputation, inhibit sales and adversely affect our business, results of operations and financial condition.

We are subject to U.S. and foreign anti-corruption and anti-money laundering laws with respect to our operations and non-compliance with such laws can subject us to criminal or civil liability and harm our business.

We are subject to the U.S. Foreign Corrupt Practices Act of 1977, as amended (FCPA) the U.S. domestic bribery statute contained in 18 U.S.C. § 201, the U.S. Travel Act, the USA PATRIOT Act, and possibly other state and national anti-bribery and anti-money laundering laws in countries in which we conduct activities. Anti-corruption laws are interpreted broadly and prohibit companies and their employees, agents, third-party intermediaries, joint venture partners and collaborators from authorizing, promising, offering or providing, directly or indirectly, improper payments or benefits to recipients in the public or private sector. We interact with officials and employees of government agencies and government-affiliated hospitals, universities and other organizations. In addition, we may engage third-party intermediaries to promote our clinical research activities abroad or to obtain necessary permits, licenses and other regulatory approvals. We can be held liable for the corrupt or other illegal activities of these third-party intermediaries, our employees, representatives, contractors, partners and agents, even if we do not explicitly authorize or have actual knowledge of such activities.

We adopted a Code of Business Conduct and Ethics and implemented policies and procedures to ensure compliance with such code. The Code of Business Conduct and Ethics mandates compliance with the FCPA and other anti-corruption laws applicable to our business throughout the world. However, we cannot be

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assured that our employees and third-party intermediaries will comply with this code or such anti-corruption laws. Noncompliance with anti-corruption and anti-money laundering laws could subject us to whistleblower complaints, investigations, sanctions, settlements, prosecution, other enforcement actions, disgorgement of profits, significant fines, damages, other civil and criminal penalties or injunctions, suspension or debarment from contracting with certain persons, the loss of export privileges, reputational harm, adverse media coverage and other collateral consequences. If any subpoenas, investigations or other enforcement actions are launched, or governmental or other sanctions are imposed, or if we do not prevail in any possible civil or criminal litigation, our business, results of operations and financial condition could be materially harmed. In addition, responding to any action will likely result in a materially significant diversion of management’s attention and resources and significant defense and compliance costs and other professional fees. In certain cases, enforcement authorities may even cause us to appoint an independent compliance monitor which can result in added costs and administrative burdens.

Further downgrades of the U.S. credit rating, automatic spending cuts, or another government shutdown could negatively impact our liquidity, financial condition and earnings.

U.S. debt ceiling and budget deficit concerns have increased the possibility of additional credit-rating downgrades and economic slowdowns, or a recession in the United States. Although U.S. lawmakers have previously passed legislation to raise the federal debt ceiling on multiple occasions, ratings agencies have lowered or threatened to lower the long-term sovereign credit rating on the United States. The impact of this or any further downgrades to the U.S. government’s sovereign credit rating or its perceived creditworthiness could adversely affect the U.S. and global financial markets and economic conditions. Moreover, absent further quantitative easing by the Federal Reserve, these developments could cause interest rates and borrowing costs to rise, which may negatively impact our ability to access the U.S. debt markets on favorable terms. In addition, disagreement over the federal budget has caused the U.S. federal government to shut down for periods of time. Continued adverse political and economic conditions could have a material adverse effect on our business, financial condition and results of operations.

Risks related to ownership of our common shares

The market price of our common shares has been, and may continue to be volatile and fluctuate substantially, and you could lose all or part of your investment and may subject us to securities litigation suits.

The market price of our common shares is volatile. The stock market in general and the market for biopharmaceutical and pharmaceutical companies in particular, has experienced extreme volatility that has often been unrelated to the operating performance of particular companies. As a result of this volatility, holders of our common shares may lose all or part of their investment. In addition to the factors discussed in this “Risk Factors” section and elsewhere in this annual report, the market price for our common shares may be influenced by, among others, the following:

● the enrollment or results of our clinical trials for LAVA-051 or LAVA-1207 and the commencement of enrollment or results of our other or future product candidates or those of our competitors;

● the success of competitive products or therapies or announcements by potential competitors of their product development efforts;

● regulatory or legal developments in the United States, the Netherlands, Europe more broadly and other jurisdictions;

● developments or disputes concerning patent applications, issued patents or other proprietary rights;

● actual or anticipated changes in estimates as to financial results, development timelines or recommendations by securities analysts;

● disputes or other developments relating to proprietary rights, including patents, litigation matters and our ability to obtain patent protection for our technologies;

● significant lawsuits, including patent or shareholder litigation;

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● market volatility due to the continued effects of and responses to the COVID-19 pandemic;

● share price and volume fluctuations attributable to inconsistent trading volume levels of our common shares;

● announcement or expectation of additional financing efforts or sales by our shareholders;

● general economic, political, and market conditions and overall fluctuations in the financial markets in the United States, Europe and elsewhere;

● changes in the structure of healthcare payment systems; and

● investors’ general perception of us and our business.

In addition, some companies that have experienced volatility in the trading price of their shares have been the subject of securities class action litigation. Any lawsuit to which we are a party, with or without merit, may result in an unfavorable judgment. We also may decide to settle lawsuits on unfavorable terms. Any such negative outcome could result in payments of substantial damages or fines, damage to our reputation or adverse changes to our business practices. Defending against litigation is costly and time-consuming and could divert our management’s attention and our resources. Furthermore, during litigation, there could be negative public announcements of the results of hearings, motions or other interim proceedings or developments, which could have a negative effect on the market price of our common shares.

Investors may have difficulty enforcing civil liabilities against us or the members of our board of directors and our senior management.

We are incorporated under the laws of the Netherlands and substantially all our assets are located outside the United States.

As a result, it may not be possible for shareholders to effect service of process within the United States upon us or our directors and executive officers or to enforce judgments against us or them in U.S. courts, including judgments predicated upon the civil liability provisions of the federal securities laws of the United States. In addition, it is not clear whether a Dutch court would impose civil liability on us or any of our directors and executive officers in an original action based solely upon the federal securities laws of the United States brought in a court of competent jurisdiction in the Netherlands.

As of the date of this annual report, the United States and the Netherlands do not have a treaty providing for the reciprocal recognition and enforcement of judgments, other than arbitration awards, in civil and commercial matters. The Hague Convention on Choice of Court Agreements of June 30, 2005, is currently in force in the Netherlands, but not in the United States. The Hague Convention of July 2, 2019, on the Recognition and Enforcement of Foreign Judgments in Civil or Commercial Matters has not entered into force for either the Netherlands or the United States. Accordingly, a judgment rendered by a court in the United States, regardless of whether it is predicated solely upon U.S. securities laws, would not automatically be recognized and enforced by the competent Dutch courts. However, if a person has obtained a judgment rendered by a court in the United States that is enforceable under the laws of the United States and files a claim with the competent Dutch court, the Dutch court will in principle give binding effect to such judgment if (i) the jurisdiction of the U.S. court was based on a ground of jurisdiction that is generally acceptable according to international standards, (ii) the judgment by the U.S. court was rendered in legal proceedings that comply with the Dutch standards of proper administration of justice including sufficient safeguards (behoorlijke rechtspleging), (iii) binding effect of such U.S. judgment is not contrary to Dutch public order (openbare orde) and (iv) the judgment by the U.S. court is not incompatible with a decision rendered between the same parties by a Dutch court, or with a previous decision rendered between the same parties by a U.S. court in a dispute that concerns the same subject and is based on the same cause, provided that the previous decision qualifies for recognition in the Netherlands. Even if such a U.S. judgment is given binding effect, a claim based thereon may, however, still be rejected if the U.S. judgment is not or no longer formally enforceable.

Consequently, U.S. investors may not be able to enforce against us or our directors, representatives or certain experts named herein who are residents of the Netherlands or countries other than the United States

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any judgments obtained in U.S. courts in civil and commercial matters, including judgments under the U.S. federal securities laws.

Shareholders may not be able to exercise pre-emption rights and, as a result, may experience substantial dilution upon future issuances of common shares or grants of rights to subscribe for shares.

In the event of an issuance of common shares or a grant of rights to subscribe for common shares, subject to certain exceptions, each shareholder will have a pro rata pre-emption right in proportion to the aggregate nominal value of such holder’s common shares. These pre-emption rights may be restricted or excluded by a resolution of the general meeting or by another corporate body designated by the general meeting. Our board of directors has been authorized until March 2026 to issue shares or grant rights to subscribe for shares up to our authorized share capital from time to time and to limit or prohibit pre-emption rights, the issuance of common shares or other equity securities could cause existing shareholders to experience substantial dilution.

Concentration of ownership of our common shares among our existing executive officers, directors and principal shareholders may prevent new investors from influencing significant corporate decisions.

Our executive officers, directors and shareholders who own more than 5% of our outstanding common shares as of February 28, 2023, in the aggregate, beneficially own shares representing approximately 75.0% of our outstanding common shares. If our executive officers, directors and shareholders who own more than 5% of our outstanding common shares acted together, they may be able to significantly influence all matters requiring shareholder approval, including the election and removal of directors and approval of any merger, consolidation or sale of all or substantially all of our assets. The concentration of voting power and transfer restrictions could delay or prevent an acquisition of our company on terms that other shareholders may desire or result in the management of our company in ways with which other shareholders disagree.

We will need to raise additional capital, which may not be available on acceptable terms, or at all. Raising additional capital may cause dilution to our shareholders, restrict our operations or require us to relinquish rights to our product candidates.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through public or private equity or debt financings, third-party funding, marketing and distribution arrangements, as well as other collaborations, strategic alliances and licensing arrangements, or any combination of these approaches. We do not have any committed external source of funds. To the extent that we raise additional capital, if available, through the sale of equity or convertible debt securities, your ownership interest in our company may be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our existing shareholders. Debt and equity financings, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as redeeming our shares, making investments, incurring additional debt, making capital expenditures, declaring dividends or placing limitations on our ability to acquire, sell or license intellectual property rights. Furthermore, the issuance of additional securities, whether equity or debt, by us, or the possibility of such issuance, may cause the market price of our common shares to decline and existing stockholders may not agree with our financing plans or the terms of such financings. Adequate additional financing may not be available to us on acceptable terms, or at all.

If we raise additional capital through future collaborations, strategic alliances or third-party licensing arrangements, we may have to relinquish valuable rights to our intellectual property, future revenue streams, research programs or product candidates, or grant licenses on terms that may not be favorable to us, if at all. If we are unable to raise additional capital when needed, we may be required to delay, limit, reduce or terminate our product candidate development or future commercialization efforts, or grant rights to develop and market product candidates that we would otherwise develop and market ourselves.

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We incur increased costs as a result of operating as a public company, and our management will be required to devote substantial time to new compliance initiatives.

We are an emerging growth company (EGC), as defined in the Jumpstart Our Business Startups Act of 2012. For as long as we continue to be an emerging growth company, we may take advantage of exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including an exemption from the auditor attestation requirement in the assessment of our internal control over financial reporting pursuant to the Sarbanes-Oxley Act; and to the extent that we no longer qualify as a foreign private issuer, (a) reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements, and (b) exemptions from the requirements of holding a nonbinding advisory vote on executive compensation, including golden parachute compensation. We cannot predict whether investors will find our common shares less attractive if we rely on these exemptions. If some investors find our common shares less attractive as a result, there may be a less active trading market for our common shares and our share price may be reduced or more volatile.

As a public company, and particularly after we are no longer an EGC or eligible to elect to be treated as a smaller reporting company, we may incur additional legal, accounting and other expenses. The Sarbanes-Oxley Act, and rules subsequently implemented by the U.S. Securities and Exchange Commission (SEC), The Nasdaq Stock Market LLC (Nasdaq), the Dutch Civil Code (DCC) and the Dutch Corporate Governance Code (DCGC) impose various requirements on public companies, including establishment and maintenance of effective disclosure and financial controls and corporate governance practices. In addition, our management and other personnel need to devote a substantial amount of time to comply with these requirements. Moreover, these rules and regulations will increase our legal and financial compliance costs and will make some activities more time-consuming and costly.

We are subject to Section 404 of the Sarbanes-Oxley Act (Section 404) and are required to furnish a report by our management on our internal control over financial reporting. Once we are no longer an EGC, we will also be required to include an attestation report on internal control over financial reporting issued by our independent registered public accounting firm. We would cease to be an EGC upon the earliest to occur of (i) the last day of the fiscal year in which we have more than $1.235 billion in annual gross revenues; (ii) the date we qualify as a “large accelerated filer,” with at least $700.0 million of equity securities held by non-affiliates; (iii) the issuance, in any three-year period, by our Company of more than $1.0 billion in nonconvertible debt securities held by non-affiliates; and (iv) December 31, 2026. To achieve compliance with Section 404 within the prescribed period, we have engaged in a process to document and evaluate our internal control over financial reporting, which is both costly and challenging. In this regard, we will need to continue to dedicate internal resources, hire additional qualified accounting personnel, potentially engage outside consultants and adopt a detailed work plan to assess and document the adequacy of internal control over financial reporting, continue steps to improve control processes as appropriate, validate through testing that controls are functioning as documented and implement a continuous reporting and improvement process for internal control over financial reporting. Despite our efforts, there is a risk that neither we nor our independent registered public accounting firm will be able to conclude within the prescribed timeframe that our internal control over financial reporting is effective as required by Section 404. This could result in an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements.

Pursuant to the DCC, Dutch limited liability companies may qualify as a so-called structure company (structuurvennootschap) to which the structure regime (structuurregime) is applicable. Currently, the requirements to qualify as such are that a company has filed a statement with the trade register of the Dutch Chamber of Commerce, for a consecutive period of three years, that it meets the following criteria (i) according to our balance sheet with explanatory notes, our issued share capital together with our reserves amounts to at least Euro (EUR) 16 million, (ii) we, or any of our dependent companies (as defined by Dutch law), has established a Dutch works council pursuant to statutory requirements under Dutch law and (iii) we and our dependent companies (as defined by Dutch law) together regularly employ at least 100 employees in the Netherlands. The qualification as a structure company may affect the governance structure of our company. Among other things, our executive directors would then be appointed by our non-executive directors (instead of the general meeting) and certain nomination rights (including for the Dutch works council)

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would apply to the appointment of our non-executive directors. We have never filed a statement that we meet the criteria of the structure regime and do not expect to qualify as a structure company for at least the next three years.

We have identified material weaknesses in our internal control over financial reporting. If we experience additional material weaknesses in the future or otherwise fail to maintain an effective system of internal controls in the future, we may not be able to accurately or timely report our financial condition or results of operations, which may adversely affect investor confidence in us and, as a result, the value of our common shares.

Although we are not yet subject to the auditor attestation requirement of Section 404 of the Sarbanes-Oxley Act, our management is responsible for designing, establishing and maintaining internal control over financial reporting. In connection with the preparation of our financial statements as of and for the year ended December 31, 2022, we identified control deficiencies that we concluded represented material weaknesses in our internal control over financial reporting across the principles for each component of the Committee of Sponsoring Organizations of the Treadway Commission (COSO) 2013 framework at the entity level (i.e., control environment, risk assessment, monitoring, information & communication and control activities) and accordingly, across our business and IT processes. The material weaknesses that we identified related to:

● the lack of consistent and documented risk assessment procedures and control activities related to our financial reporting, among which are a sufficient level of management review and approval, manual processes, roles and responsibilities, and adequate application and controls over information technology; and

● our ability to: (i) design and maintain formal accounting policies, procedures and controls over the fair presentation of our financial statements; and (ii) design and maintain controls over the preparation and review of journal entries and financial statements, including maintaining appropriate segregation of duties.

While we have taken measures during the years ended December 31, 2022 and 2021 to remediate these material weaknesses, and we have continued to enhance our internal control over financial reporting for the year ended December 31, 2022, the weaknesses discussed above will not be considered remediated until the appliable controls operate for a sufficient period of time and management has concluded, through testing, that these controls are operating effectively. As such, we cannot consider these material weaknesses as remediated as of December 31, 2022.

We may discover additional weaknesses in our system of internal financial and accounting controls and procedures that could result in a material misstatement of our consolidated financial statements. Our internal control over financial reporting will not prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud will be detected.

If we are unable to maintain proper and effective internal controls over financial reporting, or identify any material weakness, we may not be able to produce timely and accurate financial statements which could result in material misstatements in our financial statements and potentially require us to restate our financial statements. If we are unable to assert that our internal control over financial reporting is effective, or if our independent registered public accounting firm is unable to express an opinion as to the effectiveness of our internal control over financial reporting, when required, our investors could lose confidence in the accuracy and completeness of our reported financial information, the market price of our shares could be materially adversely affected, we could face restricted access to the capital markets, and we could be subject to sanctions or investigations by the SEC or other regulatory authorities.

While we have begun taking measures and plan to continue to take measures to design and implement an effective control environment, we cannot assure you that the measures we have taken to date, and are continuing to implement, will be sufficient to remediate past or prevent future material weaknesses.

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See “Item 15. Controls and Procedures—B. Management’s Annual Report on Internal Control over Financial Reporting” for additional information regarding these material weaknesses.

As a foreign private issuer, we are permitted to, and do, follow certain home country corporate governance practices instead of otherwise applicable Nasdaq requirements, and we will not be subject to certain U.S. securities laws including, but not limited to, U.S. proxy rules and the filing of certain Exchange Act reports. If we lose our status as a foreign private issuer, additional reporting obligations may apply.

As a foreign private issuer (FPI) we are permitted to, and do, follow certain home country corporate governance practices instead of those otherwise required by Nasdaq for domestic U.S. issuers. Following our home country governance practices as opposed to the requirements that would otherwise apply to a U.S. company listed on Nasdaq may provide less protection to you than what is accorded to investors under the listing rules of Nasdaq applicable to domestic U.S. issuers.

As an FPI, we are exempt from the rules and regulations under the Securities Exchange Act of 1934, as amended, or the Exchange Act, related to the furnishing and content of proxy statements, including the applicable compensation disclosure requirements. Our officers, directors and principal shareholders are exempt from the reporting and short-swing profit recovery provisions contained in Section 16 of the Exchange Act. In addition, we are not required under the Exchange Act to file reports and financial statements with the SEC as frequently or as promptly as U.S. domestic companies whose securities are registered under the Exchange Act and we are exempt from filing quarterly reports with the SEC under the Exchange Act. Moreover, we are not required to comply with Regulation FD, which restricts the selective disclosure of material information, although we have voluntarily adopted a corporate disclosure policy substantially similar to Regulation FD. These exemptions and leniencies reduce the frequency and scope of information and protections to which you may otherwise have been eligible in relation to a U.S. domestic issuer.

We would lose our foreign private issuer status if a majority of our shares are owned by U.S. residents and a majority of our directors or executive officers are U.S. citizens or residents or we fail to meet additional requirements necessary to avoid loss of foreign private issuer status. The regulatory and compliance costs to us under U.S. securities laws as a U.S. domestic issuer may be significantly higher, including filing more detailed and extensive periodic reports and registration statements on U.S. domestic issuer forms with the SEC, convert to accounting principles generally accepted in the U.S. (U.S. GAAP) and modify certain of our policies to comply with accepted governance practices associated with U.S. domestic issuers. Such conversion and modifications will involve additional costs. In addition, we would lose our ability to rely upon exemptions from certain corporate governance requirements on U.S. stock exchanges that are available to FPIs.

ITEM 4. Information on the Company

A. History and development of the company

LAVA Therapeutics N.V., together with its subsidiary, is a clinical-stage immuno-oncology company focused on developing its proprietary Gammabody™ platform of bispecific gamma-delta T cell engagers to transform the treatment of cancer. On February 15, 2016, we were incorporated in the Netherlands and are currently headquartered in Utrecht, the Netherlands. At the time of our incorporation, we acquired or exclusively in-licensed the development and commercial rights to certain clinical and preclinical programs and intellectual property from VUmc. We also have a research services agreement with VUmc in support of our preclinical and clinical stage programs.

LAVA Therapeutics N.V. is a limited liability public company (naamloze vennootschap) under the laws of the Netherlands with its registered office at Yalelaan 62, 3584 CM Utrecht, the Netherlands, and its phone number is +31 85 016 3100. In 2019, we established our wholly-owned U.S. subsidiary, LAVA Therapeutics, Inc., which began business in January 2020. We completed an initial public offering in the United States in March 2021, and our common shares began trading on the Nasdaq Global Select Market on March 25, 2021. In connection with becoming a public company, on March 29, 2021, the Company changed its name from “LAVA Therapeutics, B.V.” to “LAVA Therapeutics N.V.”

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Our business is primarily conducted in the European Union and we maintain our books and records in euro (EUR) and U.S. Dollar (USD) where applicable as functional currency. Our reporting currency for our financial statements and all other financial information included in this annual report is USD.

The SEC maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The address of that site is www.sec.gov. Our Company Internet address is www.lavatherapeutics.com. The information contained on our website is not a part of this annual report.

B. Business overview

We are a clinical-stage immuno-oncology company focused on developing our proprietary Gammabody platform of bispecific gamma-delta T cell engagers to transform the treatment of cancer. Using our Gammabody platform, we are developing a portfolio of novel bispecific antibodies designed to engage and leverage the potency and precision of gamma delta (gd) T cells to elicit a robust, anti-tumor immune response and improve outcomes for cancer patients.

Gamma Delta T Cells

Gamma delta (gd) T cells are a “ready-to-fight” first line of defense of the human body and form a bridge between the innate and adaptive immune systems. Vgamma9 Vdelta2 (Vg9Vd2) T cells, the largest subpopulation of gamma delta T cells in healthy adults, are a homogeneous effector T cell population whose prevalence has been correlated with favorable outcomes and survival in blood cancers (hematological malignancies) and solid tumors. They have the natural ability to distinguish cancer cells from healthy cells and, once activated, have the potential to trigger a rapid and potent immune response to a wide array of cancers. In addition, gamma delta T cells can initiate further activation of cells from both the innate and adaptive immune systems, which can lead to a long-lasting immune response and immunological memory.

Other Approaches

Other T cell engager (TCE) approaches, including bispecific antibodies that activate T cells through binding of CD3, which is present on all T cells, and adoptive transfer of T cells expressing an engineered chimeric antigen receptor (CAR-T) cells, have provided clinical activity against selected cancers. Nonetheless, the promise of TCEs for broader use as cancer therapy has not yet been fully realized. Drawbacks of these approaches include dose-limiting toxicities resulting from the excessive release of cytokines, referred to as cytokine release syndrome (CRS). CD3-based TCEs have additional limitations because of their indiscriminate activation of T cells, including both effector T cells and regulatory cells (Tregs). Activation of Tregs can dampen anti-cancer immunity, potentially resulting in decreased or no therapeutic efficacy. The therapeutic active dose and the toxic dose of CD3-based TCEs are often in close proximity, resulting in a narrow therapeutic window which may preclude full exploitation of their therapeutic potential. Adoptive transfer of CAR-T cells is complex and costly and has also been associated with significant risk of CRS and on-target off-tumor-related toxicities.

Our Proprietary Gammabody Platform

Our Gammabody platform enables us to develop off-the-shelf bispecific T cell engagers that leverage the advantages of antibody-based treatments including favorable manufacturability and developability characteristics. Our Gammabody platform is designed to recruit the body’s own Vg9Vd2T cells resulting in tumor cell targeting and conditional cancer cell killing. One arm of the Gammabody recruits Vg9Vd2 T cells, while the other arm recognizes and binds to a specific tumor target present on blood cancers or solid tumors. Our Gammabody drug candidates are designed to activate the Vg9Vd2 T cells once the respective arms are bound to the gamma delta T cell and the tumor target thereby avoiding broad systemic activation. We believe this approach provides a significant opportunity to address unmet medical needs with the potential to elicit potent and durable responses in patients. We also believe this approach may provide a superior therapeutic window compared to other approaches by reducing the risk of on target/off tumor mediated toxicity and avoid activation of Tregs and broad systemic activation resulting in CRS.

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We have generated compelling preclinical data using patient tumor tissues that demonstrate the ability of our Gammabody platform to exert preferential activity against tumor cells expressing the target with relative sparing of healthy cells. Studies in non-human primates, using surrogate Gammabody molecules, showed that our gamma delta T cell engagers were well tolerated and did not induce high-grade CRS.

As of the date of this Annual Report, we have activated fifteen clinical trial sites in North America and Europe, most of which are actively enrolling patients for our open-label Phase 1/2a clinical trial of LAVA-051 as a monotherapy. We have generated preliminary clinical data for LAVA-051 and presented clinical pharmacokinetic and pharmacodynamic data from the first five patient cohorts of the Phase 1 dose-escalation study that suggest a favorable safety profile, which allowed us to expand the enrollment of patients into planned additional schedules. LAVA-051 showed predictable and linear pharmacokinetics and on-mechanism pharmacodynamic parameters. We expect to report additional safety and efficacy data for the dose escalation phase of the trial when it is available, which may inform the design, including targeted populations, of a future pivotal trial.

As of the date of this Annual Report, we have activated eight clinical trial sites for the ongoing Phase 1/2a clinical trial of LAVA-1207 in North America and Europe, which are actively recruiting. We observed initial signs of biological activity in the first five cohorts and a favorable safety profile, which allowed us to continue enrollment of patients into planned additional cohorts. LAVA-1207 showed predictable and linear pharmacokinetics and on-mechanism pharmacodynamics. Preliminary signs of anti-tumor activity were observed at week 8, with iRECIST stable disease (iSD) in 8 out of 14 evaluable patients and PSA levels stabilizing or decreasing in several patients. We expect to report additional safety and efficacy data for the dose escalation phase of the trial when it is available, which may inform the design of a future pivotal trial.

Our Pipeline

We believe our Gammabody platform has the potential to develop treatments for patients with a wide variety of cancers, both as monotherapy and in combination with other therapies. Our lead clinical-stage candidates, LAVA-051 and LAVA-1207, are in Phase 1/2a clinical trials for blood cancers and prostate cancer, respectively. LAVA-051 is a Gammabody designed to target CD1d-expressing blood cancers, including CLL, MM and AML. LAVA-1207 is a Gammabody designed to target prostate-specific membrane antigen (PSMA)-expressing cancers. We are developing LAVA-1207 in mCRPC. We are also developing other Gammabody drug candidates, including LAVA-1266, which targets CD123 for the treatment of hematological malignancies. In September 2022, we licensed our advanced preclinical candidate SGN-EGFRd2 (LAVA-1223), which targets EGFR-expressing solid tumors to Seagen Inc. for further development, manufacturing, and if approved, commercialization. We designed our Gammabody platform to be fully modular and compatible with existing anti-tumor antibodies to facilitate expedited discovery and development of novel compounds. We are currently advancing our Gammabody pipeline for the development of potential therapeutics in both hematologic malignancies and solid tumors.

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LAVA-051

Our most advanced product candidate, LAVA-051, is a unique CD1d-targeting Gammabody in development for treating hematologic cancers including CLL, MM and AML. CD1d is expressed by tumor cells of most patients with CLL, MM and (myelo)monocytic subtypes of AML. LAVA-051 works via a dual mechanism of action, with engagement of Vg9Vd2 T cells as the primary mechanism and is designed to kill CD1d-expressing tumor cells.

LAVA-051 cross-links CD1d-expressing tumor cells and Vg9Vd2 T cells, resulting in conditional Vg9Vd2 T cell activation, the secretion of cytolytic molecules and cytokines and subsequent tumor cell killing. As published in 2020 in Nature Cancer, we preclinically demonstrated that the CD1d-binding moiety of the bsTCE is also uniquely able to enhance the interaction of CD1d and the T cell receptor of invariant NKT cells (iNKT) cells. These iNKT cells are a population of innate-like lymphocytes that play an important role in orchestrating immune responses in cancer. We found that this feature led to iNKT cell activation and anti-tumor activity by LAVA-051. LAVA-051 has shown activity against CD1d-positive CLL, MM and AML cells in in vitro functional assays. These results suggest that LAVA-051 may have a positive effect on clinical outcomes for patients with CLL, MM and AML. We believe the combined Vg9Vd2 T cell and iNKT cell-activating properties and the resulting cascade response of downstream immune cell activation contribute to the potential of LAVA-051 to provide rapid tumor cell cytotoxicity as well as potentially long-term anti-tumor immune responses.

In 2021, we dosed the first patient in a Phase 1/2a clinical trial evaluating LAVA-051 in patients with relapsed or refractory CLL and MM. Patients with AML are expected to be included later in the trial once biologically relevant dosing has been reached. The open-label, multi-center clinical trial will evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, immunogenicity and preliminary anti-tumor activity of LAVA-051. The Phase 1 dose-escalation study will determine an optimal Phase 2 dose of LAVA-051. The Phase 2a portion of the study will enroll patients in disease-specific cohorts to confirm safety and evaluate preliminary anti-tumor activity in each disease cohort. The Phase 1/2a clinical trial for LAVA-051 has fifteen clinical trial sites in Europe and in the United States. In 2021, the FDA granted orphan drug designation for LAVA-051 for the treatment of CLL.

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In December 2022, at the 64^th American Society of Hematology Annual Meeting and Exposition (ASH), we reported initial clinical data from the first five patient cohorts of the Phase 1 dose-escalation study. These data suggest potential signs of clinical activity as well as predictable and linear PK and on-mechanism PD parameters consistent with Vg9Vd2 engagement. Drug exposure and (Vg9Vd2) T cell receptor occupancy of LAVA-051 increased with LAVA-051 dose increases and peripheral blood Vg9Vd2 T cells expressed increased levels of activation markers after dosing. One CLL patient experienced multiple enlarged tender diseased lymph nodes one week after first dosing that subsequently regressed, reminiscent of a tumor flare reaction that has been reported as a potential sign of anti-tumor activity in CLL patients treated with another immuno-oncology drug. The patient was assessed as stable disease at the pre-planned 12 week on-study assessment and also had a significant reduction in clonal B-cell count. Dosing in the LAVA-051 Phase 1/2a trial is ongoing, with subsequent cohorts planned to enroll patients in separate cohorts for intravenous and subcutaneous dosing. We expect to report additional clinical data from the trial when it is available, which may inform the design, including targeted populations, of a future pivotal trial.

Disease Overview

Despite current treatment options, there remains an unmet need for patients with CLL, MM and AML, as the vast majority will become refractory to or develop resistance to existing therapies.

Chronic lymphocytic leukemia

CLL is the most common leukemia in the U.S. and Europe. CLL has an incidence of approximately 4.7 cases per 100,000 people in the U.S., and an increasing incidence in Western Europe including up to 5.27 per 100,000 in the UK. The disease has a male predominance and a median age at diagnosis of approximately 70 years.

CLL starts in white blood cells, called lymphocytes, in the bone marrow, and is caused by the monoclonal expansion of mature-appearing, functionally incompetent neoplastic B lymphocytes. As a disease, CLL has a highly variable presentation and as such, a variable clinical course. Most patients with CLL are initially asymptomatic and are managed with a watch-and-wait approach. In time, about two-thirds of patients will require treatment.

There is no standard front-line treatment regimen for all symptomatic CLL, mostly due to differences in patient age and frailty. In recent years, two new classes of drugs have been added to the primarily chemotherapy-based treatments: the BCL-2 inhibitor venetoclax and the Bruton’s tyrosine kinase (BTK) inhibitors, which are now broadly evaluated at various stages of disease and in different patient segments and combinations. When disease progression occurs, especially after treatment with DNA-damaging agents and the two drug classes mentioned earlier, CLL cells serially accumulate adverse biological features and increasingly develop resistance to existing therapies. Novel and more effective therapeutic approaches with an alternative mechanism of action and an acceptable safety profile are needed. Patients for whom no standard of care treatment currently exists are included in our clinical trial with LAVA-051.

Published studies have shown that CD1d levels are higher in more advanced stages of CLL, underscoring the potential of using CD1d as a target for Vg9Vd2 T cells in CLL immunotherapy.

Multiple myeloma

MM is the second-most frequent blood cancer diagnosis in the U.S. and Western Europe, with an estimated incidence of about 4.5-6 per 100,000 people per year, with higher incidence in black male populations and lower incidence in Asian-Pacific populations. MM primarily affects elderly patients with a median age at diagnosis of 72 years.

MM is characterized by the neoplastic proliferation of plasma cells producing a monoclonal immunoglobulin known as M-protein. Plasma cells, a type of immune cell, are typically responsible for secreting antibodies to fight infection in a healthy person. In MM, the neoplastic plasma cells proliferate in the bone marrow and often result in extensive skeletal destruction with osteolytic lesions, osteopenia or pathologic fractures. Most patients with MM present with signs or symptoms related to the infiltration of plasma cells into the bone or other organs, or symptoms related to high levels of M-protein including reduced immune function.

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Even though the treatment landscape for MM has evolved considerably, MM remains an incurable disease. Patients typically receive combination therapy consisting of two or more different classes of drugs, including immunomodulatory imide drugs, proteasome inhibitors, anti-CD38 antibodies and anti-BCMA B-cell maturation agent drugs. Combinations of different drugs are used upon failure of the previous treatment and disease progression. Upon relapse, the disease typically becomes more aggressive with shortened subsequent progression-free intervals. There is a critical need to develop novel therapeutic approaches with a different mechanism of action and an acceptable side-effect profile, particularly for relapsed refractory MM. LAVA-051 is being evaluated in MM patients who had progressive disease following treatment with existing drug classes used as standard therapy.

Several studies have demonstrated that patient MM cells express CD1d and that MM cells are susceptible to the cytolytic activity of both iNKT cells and gamma delta T cells. We believe that these data, combined with the demonstrated ability of LAVA-051 to trigger targeted anti-cancer activity of iNKT and gamma delta T cells in preclinical in vitro and in vivo MM models and against patient malignant cells ex vivo, supports the potential of targeting CD1d using LAVA-051 in MM.

Acute myeloid leukemia

AML is the most common form of acute leukemia in adults. The median age at diagnosis is 68 years and the age-adjusted incidence is about 4 per 100,000 people per year in the U.S. The incidence of AML increases, and its prognosis worsens, with age, ranging from a 5-year overall survival of 40-50% in patients under 50 years of age, to approximately 5-10% in older patients. Prognosis is also worse in patients with secondary AML.

AML is characterized by infiltration of the bone marrow, blood and other tissues by proliferative, clonal, abnormally differentiated, and occasionally poorly differentiated cells of the hematopoietic system.

The mainstay of AML treatment for patients under approximately 60 years of age and medically fit patients consists of intensive induction chemotherapy. For patients who are not eligible for intensive regimens, therapy includes best supportive care, low-dose cytarabine and hypomethylating agents decitabine and azacitidine alone or in combination with venetoclax. In the case of relapsed and/or refractory AML, patients are offered intensive salvage therapy with the aim of achieving a complete response and subsequent allogeneic hematopoietic stem cell transplant when deemed sufficiently physically fit. In other cases, patients receive low-intensity therapy or best supportive care.

In recent years, several novel treatments have been approved for certain treatment settings and/or subsets of AML patients, including approaches involving FLT3 inhibitors, IDH-2 inhibitors, IDH-1 inhibitors, and anti-CD33 antibodies. Despite the improved and more effective therapeutic options available to patients with AML, resistance has been shown to develop for most of these drug classes, underscoring the urgent need for efficacious therapies with novel mechanisms of action.

AML cells have been shown to be susceptible to lysis by iNKT cells as well as gamma delta T cells. Among AML patients, expression of CD1d was reported to be most pronounced in patients with the (myelo) monocytic subtypes, which was confirmed in the patient series that we studied. We believe these data, combined with the demonstrated activity of LAVA-051 in triggering relevant anti-cancer activity of iNKT and gamma delta T cells in preclinical in vitro and in vivo models and using ex vivo AML patient samples, support the potential of targeting CD1d using LAVA-051 in AML.

LAVA-1207

LAVA-1207 is a Gammabody that conditionally activates Vg9Vd2 T cells upon crosslinking to PSMA to trigger the potent and preferential killing of PSMA-positive tumor cells. LAVA-1207 specifically targets and mediates activation of Vg9Vd2 T cells against PSMA-expressing tumor cells. PSMA, a transmembrane protein, is expressed by most prostate tumors, and its expression is further increased in poorly differentiated, metastatic, and hormone-refractory carcinomas. Its expression profile in prostate cancer has been clinically validated and makes PSMA an important target for therapies for this form of cancer. In preclinical experiments, LAVA-1207 has been observed to be highly specific and potent in its ability to induce Vg9Vd2 T cell-mediated killing of PSMA-positive tumor cells.

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In 2022, we dosed the first patient in a Phase 1/2a clinical trial evaluating LAVA-1207 in patients with mCRPC. The open-label, multi-center, Phase 1/2a clinical trial will evaluate safety, tolerability, pharmacokinetics, pharmacodynamics, immunogenicity and preliminary anti-tumor activity of LAVA-1207. The Phase 1 dose-escalation phase is designed to determine a recommended Phase 2a dose of LAVA-1207. Once a recommended Phase 2 dose has been established, the trial will expand into the Phase 2a portion to confirm safety and evaluate the preliminary anti-tumor activity of LAVA-1207 in patients with mCRPC. Enrollment for the Phase 1/2a clinical trial for LAVA-1207 is ongoing and we have activated eight clinical trial sites in Europe and the United States, most of which are actively recruiting.

In February 2023, at the American Society of Clinical Oncology Genitourinary Cancers Symposium (ASCO GU), we reported initial clinical data for the ongoing Phase 1/2a clinical trial of LAVA-1207. For the first five cohorts, these initial data demonstrated predictable and linear pharmacokinetics and on-mechanism pharmacodynamics and an favorable safety profile. Preliminary signs of anti-tumor activity were observed at week 8, with iRECIST stable disease (iSD) in 8 out of 14 evaluable patients and PSA levels stabilizing or decreasing in several patients. iRECIST is the response evaluation criteria in solid tumors, a set of published rules that define whether tumors in cancer patients have improved, stayed the same or worsened during treatment.

We expect to report additional safety and efficacy data for the dose escalation phase of the trial when it is available, which may inform the design of a future pivotal trial.

Disease Overview

Prostate cancer is the second most common cancer among men in the U.S., with nearly 200,000 new diagnoses in 2020. It is estimated that 50,000 men with mCRPC are treated every year in the U.S. Several treatments are approved for mCRPC, including chemotherapies (docetaxel and cabazitaxel), next generation androgen receptor directed therapeutics (e.g., enzalutamide, abiraterone and (lutetium (177Lu)-vipivotide tetraxetan) and PARP inhibitors (for a small subset of patients with certain DNA damage repair mutations), which have collectively improved the therapeutic options for patients with mCRPC. The long-term outcome for patients with mCRPC is highly variable and will depend on prognostic factors of the underlying disease, its responsiveness to the available therapies and the co-morbidities of this generally elderly population. However, there is no curative treatment available today and additional new therapies are needed. Once mCRPC has metastasized beyond regional lymph nodes, the 5-year survival rate is 30%, and it is estimated that more than 33,000 men have died of mCRPC in the U.S. in 2020.

Prostate cancer is well-known for its immunosuppressive tumor microenvironment and generally low tumor mutational burden. These characteristics are believed to hamper the efficacy of classical CD3-based TCEs and other immuno-oncology compounds. According to published literature, prostate cancer is the solid tumor indication with the highest relative abundance of tumor-infiltrating Vg9Vd2 cells. This high relative abundance correlates with a lower biochemical recurrence (BCR) rate, which is related to an improved patient prognosis.

SGN-EGFRd2 (LAVA-1223)

In September 2022, we entered into an exclusive worldwide license agreement with Seagen Inc. (Seagen) to develop, manufacture and commercialize SGN-EGFRd2 (LAVA-1223), an advanced preclinical asset that utilizes our proprietary Gammabody technology to target EGFR-expressing solid tumors. Under the terms of the agreement, we received a $50 million nonrefundable upfront payment in October 2022 and are eligible to receive up to approximately $650 million upon the achievement of development, regulatory and commercial milestones, as well as royalties ranging from the single digits to the mid-teens on future sales. The agreement also provides Seagen with the opportunity to exclusively negotiate rights to apply our proprietary Gammabody platform on up to two additional tumor targets.

LAVA-1266

LAVA-1266 is a Gammabody that conditionally activates Vg9Vd2 T cells upon crosslinking to CD123 (Iternleukin-3 receptor-alpha) to trigger the potent and preferential killing of CD123-positive tumor cells. CD123 is a clinically validated target and CD123 is expressed in a range of hematological malignancies, including AML, myelodysplastic syndrome (MDS), acute lymphocytic leukemia (ALL) and Hodgkin Lymphoma. There is a clear unmet need in these indications. We are investigating whether potential

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challenges noted by various other CD-123 approaches (e.g., CRS, capillary leak syndrome, on-target off-tumor toxicity) could be overcome by the Gammabody platform approach. We are currently engaged in CTA/IND enabling activities and plan to seek a CTA or IND submission for LAVA-1266 in 2024.

Future Programs

We are also investigating LAVA-1278, a CD40 Gammabody, as a preclinical candidate for the treatment of several hematologic malignancies. We are currently engaged in preclinical activities and expect to engage in CTA/IND enabling activities so that we can seek CTA or IND submission for LAVA-1278 in 2025.

T cell engagers in cancer therapy

Current T cell engager approaches

Immuno-oncology aims to harness the power of the immune system to drive a durable anti-cancer response that starts with the recognition of malignant cells as “foreign” and the ability to overcome immune evasion mechanisms employed by cancer. Despite many successes in the field, one of the remaining fundamental challenges of leveraging the immune system for the treatment of cancer is to specifically activate immune effector cells against the tumor while avoiding immune activation against healthy cells. This requires, among other factors, specific effector T cell engagement and activation at the tumor site, often made ineffective in cancer patients due to tumor microenvironment (TME)-driven immune inhibition. Immunotherapy currently utilizes multiple approaches to T cell engagement including bispecific T cell engagement and CAR-T cell engagement.

The first approach makes use of bispecific antibodies that can engage all T cells, irrespective of their antigen recognition specificity. The second approach involves the adoptive transfer of engineered T cells, such as CAR-T cells, empowered with specific tumor recognition ability to generate anti-tumor activity de novo, independent of a pre-existing response.

In the bispecific antibody concept, the cytotoxic potential of effector T cells is redirected against the tumor. Through this approach, T cells are physically linked with tumor cells via bispecific antibodies that are composed of a T cell-binding domain and a tumor-binding domain. These TCEs primarily activate T cells through binding of CD3 in the T CR/CD3 receptor complex and can trigger broad activation of CD3-expressing T cells. These cells would otherwise individually require the specific recognition of a unique antigen in the context of polymorphic major histocompatibility complex (MHC) molecules for their activation. Thereby, TCEs can bypass the normal antigen restriction of classic T cells, causing activation independent of the epitope specificity of the T cell receptor.

The dual-targeting concept enabled by TCEs holds great therapeutic promise, but translation of the concept into treatments has proved challenging. The archetypical application, T cell redirection and engagement via CD3, was first described in the mid-1980s but did not reach patients until 2009 with the European Union approval of catumaxomab. Catumaxomab was delivered intraperitoneally, as systemic intravenous administration induced fatal toxicity at low doses due to Fc-mediated off-target T cell activation in the liver. Catumaxomab was withdrawn from the market in 2017 for commercial reasons, but the impressive clinical results of another approved CD3-based TCE, blinatumomab (CD3 × B lymphocyte antigen CD19), sparked renewed interest and investment in this approach. This is reflected by the numerous TCEs currently in clinical development for hematologic and solid tumor indications.

The second approach is the CAR-T cell, or engineered cell therapy, strategy in which patient T cells are harvested and genetically engineered to carry a chimeric receptor allowing recognition of a specific target antigen on the tumor cell. Adoptive transfer of these cells results in activation of the CAR-T cells and tumor cell killing. To date, multiple CAR-T therapies have generated promising clinical data, and multiple CAR-T cell therapies targeting CD19, including KYMRIAH® (tisagenlecleucel), YESCARTA® (axicabtagene ciloleucel), TECARTUS® (brexucabtagene autoleucel) and BREYANZI® (lisocabtagene maraleucel), and a BCMA-targeted CAR-T cell therapy ABECMA® (idecabtagene vicleucel), have been approved. Many more CAR-T therapies are being developed against different targets and leveraging effector activity of different cell types. The currently approved therapies are personalized approaches based on relatively complex and clinically aggressive technologies and procedures, in which a patient’s own T cells are initially extracted and then re-administered after being modified and after the patient has undergone bone marrow conditioning with high-

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dose chemotherapy. A next-generation approach is also in early-stage development, based on the same complex engineering and manufacturing process but aimed at having off-the-shelf allogeneic cell product that can be used for several patients without lag time.

Challenges with current TCE approaches

Current TCE approaches, including CD3 TCEs and CAR-T approaches, have demonstrated anti-cancer activity in clinical settings, but have also been limited in their use due to several key challenges, including:

● Limited therapeutic window: Side effects and dose-limiting toxicities, most prominently related to CRS and on-target/off-tumor related toxicities, have been observed in both early-stage TCE and CAR-T approaches.

● High variability in effectiveness: CD3 TCEs dampen the antitumor efficacy of cytotoxic T cells through activation of immune-suppressive Tregs which has resulted in variability of clinical efficacy.

● Patient preconditioning: For CAR-T, high doses of chemotherapy are typically needed to precondition the patient by lymphodepletion. Such lymphodepletion creates space for CAR-T cells and improves their homeostatic expansion and therapeutic efficacy, but it also results in side effects associated with both high- dose chemotherapy and leukopenia.

● Manufacturing and logistics complexity: CAR-T manufacturing complexities to date means that products cannot always be successfully produced for patients. Lengthy processes result in lag times for treatment administration, resulting in a long vein-to-vein time and a limited addressable patient population.

Our Strategy

We are a clinical stage immuno-oncology company focused on developing our proprietary Gammabody™ platform of bispecific gamma-delta T cell engagers to transform the treatment of cancer. Using our Gammabody platform, we are developing a portfolio of novel bispecific antibodies designed to engage and leverage the potency and precision of gamma delta T cells to orchestrate a robust, natural anti-tumor immune response and improve outcomes for cancer patients. We are focused on discovering, developing and ultimately commercializing proprietary, off-the-shelf, targeted Gammabody drug candidates that leverage the power of gamma delta T cells with the validated benefits of antibody-based treatments. Key components to our strategy include:

● Establish ourselves as the leader in the development of gamma delta T cell engagers for the treatment of cancer.

● Rapidly accelerate the clinical development of our lead candidates, LAVA-051 and LAVA-1207, to support proof-of-concept and other enabling activities for our investigational candidates.

● Achieve competitive excellence by leveraging the transformational potential of our platform to advance and expand our earlier stage pipeline while broadening the applications of the platform to additional targets and patient populations.

● Enhance our pipeline and platform through strategic partnership and collaboration opportunities.

● Leverage and continue to build our intellectual property portfolio in order to protect our Gammabody platform and our leadership position in gamma delta bsTCEs.

Gammabody (gamma delta bsTCEs): a potential new class of immuno-oncology treatments

The successes of current TCE approaches highlight the high potential of re-directing effector T cell responses as a therapeutic strategy to improve cancer patients’ outcomes. In particular, the large number of trials with bispecific TCEs in cancer is further testimony to how this approach is, potentially the most promising from both a clinical and commercial perspective. We have identified the engagement of gamma delta T cells as the next-generation application of TCEs and believe our Gammabody platform may address limitations of current TCEs to improve patient outcomes in both hematologic malignancies and solid tumors.

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Vgamma9 Vdelta2 (Vg9Vd2) T cells in cancer therapy

Background on Vg9Vd2 T cells

T lymphocytes are divided into two main categories based on T cell receptor type: aß, or alpha beta, and gd, or gamma delta, T cells. Gamma delta T cells represent approximately 1-5% of all T cells in circulation. Human gamma delta T cells are further classified based on the combination of their Vgamma (Vg) and Vdelta (Vd) receptor chains, with Vg9Vd2 T cells representing about 90% of all gamma delta T cells in circulation. In addition, these Vg9Vd2 T cells have been observed to infiltrate tumors in which greater relative abundance correlates with favorable outcome.

Although most human T cells express an alpha beta TCR, a smaller proportion of T cells express a gamma delta TCR. Conventional alpha beta TCR bearing T cells can be subdivided in two major subtypes: CD4 expressing “helper” T cells, and CD8 expressing “cytotoxic” T cells. Both alpha beta T cell populations recognize specific peptides loaded onto MHC molecules—MHC class II in the case of CD4-positive T cells, and MHC class I in the case of CD8-positive T cells. In contrast, gamma delta T cells typically recognize their ligands independent of classical antigen processing and MHC restriction. The gamma delta T cell population can be roughly divided into two large sub-populations: Vdelta1 (Vd1) and Vdelta2 (Vd2) TCR expressing gamma delta T cells. The Vdelta2 population of gamma delta T cells associate almost invariably with the Vgamma9-chain, resulting in a very homogeneous effector cell population. This population has a monomorphic TCR with a well-defined specificity for butyrophilin molecules (BTN3A1/2A1)-in complex with phosphoantigen, a well-defined proinflammatory functional profile and a unique capacity to also act as antigen-presenting cells upon their activation.

In contrast, Vdelta1 T cells constitute a heterogeneous population of cells in part because the Vdelta1 chain can pair with several Vgamma chains, such as Vgamma4,5,9, and also with alpha beta-TCR, and has more variability in TCR CDRs. Consequently, Vdelta1 T cell subsets recognize various antigen presenting molecules and can recognize various antigens. Vdelta1 T cells also have substantial functional diversity not only being able to exert cytotoxic effects, but also play a role in tissue homeostasis, repair and immune suppression. Both cell subsets can infiltrate tumors, but protumor functions related to IL-17 production and a regulatory phenotype have only been reported for tumor-infiltrating Vdelta1 T cells, and in various tumor types infiltration of Vdelta1 has in a number of studies been demonstrated to be related to poorer patient outcome, while Vdelta2 tumor infiltration has generally been shown to correlate to positive prognosis.

When these Vg9Vd2 T cells are activated, they secrete pro-inflammatory cytokines that trigger downstream immune cells from the innate and adaptive immune system, including alpha beta T cells, NK cells and dendritic cells. Activated Vg9Vd2 T cells have a distinct ability to take up, process and present antigens to alpha beta T cells, which may prime the adaptive immune system for a memory response, potentially resulting in deep and durable responses against disease.

Targeting Vg9Vd2 T cells for cancer treatments

As mentioned above, Vg9Vd2 T cells have been observed to infiltrate tumors in a wide variety of cancer indications and can provide effective anti-tumor immune responses against both hematologic malignancies and solid tumors. These T cells contain a tumor recognition mechanism, allowing them to recognize and kill cancerous cells, while leaving healthy cells unharmed. Vg9Vd2 T cells represent a potent and relatively homogeneous class of proinflammatory immune effector cells with an immune surveillance function.

Because Vg9Vd2 T cells have properties of both the innate and adaptive immune systems, they serve as a functional bridge between these two critical systems to effect tumor killing. They have the capability to be activated for immediate and potent killing of tumor cells, as well as the potential to induce a cascade response in which they trigger innate and adaptive immune cells through cytokine release and antigen presentation. The latter may induce immunological memory and result in not only potent, but also durable responses.

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Vg9Vd2 T cells detect and kill tumor cells by indirectly detecting specific metabolites, called phosphoantigens, which often accumulate intracellularly at relatively high levels in tumor cells. These phosphoantigens bind to an intracellular domain of the cell-surface receptor, butyrophilin, triggering a conformational change and the recognition of butyrophilin receptors on tumor cells by Vg9Vd2 T cells. Upon this interaction with tumor cells, Vg9Vd2 T cells are activated and release cytolytic molecules that can directly kill cancer cells and simultaneously produce pro-inflammatory cytokines that can attract other immune cells and trigger anti-cancer activity.

As reported in a landmark publication in Nature Medicine in 2015, the presence of tumor-infiltrating gamma delta T cells has shown the highest correlation with favorable outcomes for cancer patients as compared with other leukocyte subpopulations present in tumors. Further, as reported in Oncoimmunology in 2017, infiltration of Vg9Vd2 T cells was confirmed in a large set of different tumors, including cancers with a low incidence of alpha beta T cell infiltration (also called: cold tumors).

The unique anti-cancer potential of gamma delta T cells drove prior attempts to evaluate them in clinical trials. Various clinical trials were conducted utilizing either adoptive cell therapy of ex vivo expanded activated autologous or allogeneic gamma delta T cells or in vivo gamma delta T cell activation approaches with synthetic phosphoantigens or aminobisphosphonates. However, the results from these prior trials were not consistent or robust enough to support further development. Lack of tumor-targeted activation and observed exhaustion of gamma delta T cells may have dampened clinical responses. Based on our preclinical data, we believe that an important root cause for underwhelming efficacy of these approaches is the systemic non-tumor specific activation of Vg9Vd2 T cells. We believe a targeted approach utilizing a gamma delta bsTCE could materially improve clinical responses while maintaining a good safety profile.

Advantages of our Gammabody approach

Gamma delta bsTCEs represent an emerging new class of targeted immuno-oncology treatments. By engaging only Vg9Vd2 T cells, instead of all CD3-expressing T cells, our approach is designed to enable therapeutic options that overcome the limitations of previous and existing TCE approaches in the treatment of cancer. We believe our approach has the following advantages:

●Unique engager of gamma delta T cells. Our Gammabody molecules specifically engage the proinflammatory immune effector Vg9Vd2 T cell population, unlike pan T cell engagers that also result in co-activation of immunosuppressive T cell populations. Our technology is designed to retain and leverage the natural ability of Vg9Vd2 T cells to distinguish tumor cells from healthy cells.

●Conditional activation with high precision. Our Gammabody molecules only trigger activation of Vg9Vd2 T cells upon simultaneous binding of the gamma delta T cell receptor and the antigen on tumor cells. This conditional activation provides a tumor-targeting mechanism and avoids a broad systemic, or non-tumor specific, activation of Vg9Vd2 T cells. Tumor-targeted activation avoids population exhaustion, which is commonly observed after repeated generalized gamma delta T cell triggering using non-tumor targeted phosphoantigen-based approaches that have been applied by others.

●Driving a cascade response that includes both innate and adaptive immune responses. Activated Vg9Vd2 T cells can trigger innate and adaptive immune cells through cytokine release and antigen presentation. Thereby, our technology has the potential to induce immunological memory and result in not only rapid cytotoxicity, but also potent and durable responses.

● High potency. We have demonstrated high antitumor potency in vitro and ex vivo using both cell lines and patient tumor samples with our Gammabody platform, with an average EC50 in the low picomolar range. This suggests that clinical antitumor activity may be triggered using relatively low doses.

● Low anticipated risk of high grade CRS. Our early-stage Phase 1 clinical trials for LAVA-051 and LAVA-1207 have had no occurrence of high grade (>grade 2) CRS to date. Similarly, our (surrogate) Gammabody molecules did not result in any high grade CRS in non-human primate studies. This is consistent with earlier clinical studies of gamma delta T cell-based therapeutic approaches, including those that triggered systemic activation of the entire Vg9Vd2 T cell population.

● Potential activity in hematologic malignancies and solid tumors, including immunologically “cold” tumors.

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Our Gammabody molecules can trigger activation of both peripheral blood and tumor-infiltrating Vg9Vd2 T cells, allowing access to and activity against both hematologic malignancies and solid tumors, potentially including those that have not been successfully addressed using immune checkpoint inhibitors.

● Broad therapeutic window. Vg9Vd2 T cells have an inherent ability to distinguish cancerous from normal cells, which is retained in our Gammabody technology. Based on our preclinical data, we expect the optimal dose to be well below the toxic dose. We believe that the high tumor selectivity and potency of our Gammabody molecules, in combination with the low risk of CRS, may provide a broad therapeutic window.

● Fully modular, allowing for the use of existing tumor-targeting antibodies. Our platform is fully modular, enabling existing antibodies or antibody fragments to be incorporated into our Gammabody platform. This allows us to expedite the discovery and development of clinical candidates since no de-novo antibody panel generation is required. In addition, our platform uses standardized development procedures that are well-known to regulatory authorities.

● Well-established, standardized manufacturing process. Our Gammabody molecules are off-the-shelf products, which are manufactured using well-established, standardized processes that avoid the higher costs, complexities, product variability and treatment delays associated with the manufacturing of cellular products, such as CAR-T therapies.

● Potential combination with immune checkpoint inhibitors and other oncology approaches. Because of their distinct mechanism of action and targeted nature, our Gammabody molecules have the potential to be combined with a variety of current standard-of-care therapies, including cytotoxic agents, anti-PD-1/PD-L1 agents, monoclonal antibodies and other cell therapy approaches, for the treatment of a wide range of cancer indications.

Our novel constructs

Our Gammabody molecules utilize humanized and highly specific single domain antibodies, which are known as VHH antibody fragments. VHH antibodies are known to have several key pharmaceutical advantages over conventional antibodies.

VHH antibodies have been shown to be able to access unique epitopes that may not be accessible for conventional antibodies. VHH single domain antibodies are readily humanized and are known for their high stability, solubility and ease of manufacturing. The use of VHH single domain antibody components and their therapeutic potential has been validated by the approval of caplacizumab for patients with acquired thrombotic thrombocytopenic purpura.

As depicted below, we are developing a novel proprietary platform in two relatively small Gammabody formats: a bispecific format in which a Vdelta2 T cell receptor-specific VHH is linked to a tumor-targeting VHH via a short and clinically validated linker, and a bispecific format with a silenced Fragment crystallizable (fc) domain (VHH-Fc). We believe that the combination of a relatively small size and the Fc-mediated half-life extension facilitates tumor penetration and is therefore advantageous for the development of compounds targeting solid tumors.

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Our manufacturing advantages

We have demonstrated that bispecific VHH antibodies can be produced in yeast, which allows for robust and low-cost production. Fc-domain-containing bispecific VHH-domain antibodies are produced using the widely used Chinese Hamster Ovary (CHO) manufacturing platform and knobs-into-holes (KiH) technology. KiH technology has been widely validated and is based on the introduction of a single amino acid “knob” mutation on the one heavy chain Fc, which fits into a complementary “hole” created by a three-amino acid mutation on the other heavy chain Fc. Bispecific VHH-Fc are thus produced in a single CHO cell line in which favored heterodimer pairing ensures high yields of the bispecific product.

Our Gammabody platform

We have developed a proprietary Gammabody platform that optimizes tumor-targeted activation of Vg9Vd2 cells for tumor cell killing, retains and leverages the inherent tumor cell recognition and killing capabilities of these cells and drives a downstream immune response cascade against tumor cells. Our platform combines the power and natural selectivity of Vg9Vd2 T cells and their ability to activate both arms of the immune system with the targeting advantages of small-sized bispecifics, providing the opportunity to significantly improve upon classical T cell engager approaches, as well as upon earlier strategies for recruiting gamma delta T cells for cancer therapy.

In the graphic below, the left panel shows the natural activation mechanism of Vg9Vd2 T cells, which, through recognition of phosphoantigen-activated butyrophilins, leads to tumor cell killing. The right panel depicts our approach using our Gammabody platform. This Gammabody molecule binds Vg9Vd2 T cells and a tumor-associated antigen of choice. Crosslinking via our Gammabody leads to activation of Vg9Vd2 T cells and potent tumor cell killing. While our approach bypasses the requirement of interactions between the Vg9Vd2 TCR and phosphoantigen-activated butyrophilins, Gammabody molecule bound Vg9Vd2 T cells retain the inherent tumor specificity of Vg9Vd2 T cells. We have shown in our preclinical work that this results in strong activity against tumor cells, but only limited activity against healthy cells expressing the same target.

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LAVA’s proprietary Gammabody platform engages Vg9Vd2 T cells for targeted cancer treatment.

Our approach targets antigens that are frequently expressed at higher levels on tumor cells as compared to healthy cells. In addition, our platform avoids the detrimental co-activation of immune-suppressive cells, such as Tregs, that is typically observed with CD3 or pan-T cell TCEs, which can dampen the development of effective antitumor responses. We have conducted preclinical experiments that have shown that Treg activation, as assessed by flowcytometric detection of the early activation-marker CD69, is induced by a CD3-based TCE, but not by our Gammabody. Since our platform does not activate immune suppressive cells like Tregs, we believe this dampening effect is unlikely to occur with our Gammabody molecules, increasing their potential efficacy compared to CD3-based TCEs.

We believe our Gammabody molecules drive a cascade response that potentially provides for enhanced anti-tumor efficacy. After the initial activation of Vg9Vd2 T cells is mediated through our Gammabody molecules, the activated Vg9Vd2 T cells are designed to rapidly kill tumor target cells and have the potential for:

● Expansion. The Vg9Vd2 T cells proliferate, resulting in an increased number of anti-tumor Vg9Vd2 T cells.

● Broad immune activation. The Vg9Vd2 T cells trigger the activation and antitumor activity of other immune cells, such as NK cells, alpha-beta T cells and dendritic cells.

● Antigen presentation. The Vg9Vd2 T cells process and present tumor antigens and acquire dendritic cell- like antigen presenting functions to trigger the development of “classical” naïve CD4⁺ and CD8⁺ alpha-beta T cell responses against the tumor.

We believe that this cascade of events may enhance potency and lead to a more durable immune response.

Preclinical support for our mechanism of action and safety

We believe that our Gammabody platform possesses features that have the potential to address several shortcomings of current TCE approaches for cancer. We have conducted multiple preclinical experiments where our Gammabody molecules have shown potent, selective, sustained and serial killing of tumor cells. Anti-tumor activity has been shown in in vivo preclinical animal models and in ex vivo models using patient tumor and Vg9Vd2 T cells. Our preclinical experiments have also shown that activation of the Vg9Vd2 T cell population is conditional upon Gammabody crosslinking.

In our studies in non-human primates (NHPs), surrogate Gammabody molecules were shown to be safe and well-tolerated. NHP studies were performed in cynomolgus monkeys with fully cross-reactive surrogate Gammabody molecules. The gamma delta bsTCEs used were designed to trigger human and monkey gamma delta T cells with similar potency. Administration of the cross-reactive surrogate Gammabody led to high sustained plasma levels and dose-dependent accumulation in relevant tissues with no safety-related effects and no signs of high grade CRS.

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License Agreements

Seagen Agreement

In September 2022, we entered into an exclusive worldwide license agreement with Seagen to develop, manufacture and commercialize SGN-EGFRd2 (LAVA-1223), an advanced preclinical asset that utilizes our proprietary Gammabody™ technology to target EGFR-expressing solid tumors. Under the terms of the Seagen Agreement, we received a $50 million nonrefundable upfront payment in October 2022, and are eligible to receive up to approximately $650 million upon the achievement of development, regulatory and commercial milestones, as well as royalties ranging from high single digits to the mid-teens, within a range of less than 10%, on future sales.

Seagen has also granted us a one-time option to obtain increased royalties if we exercise a buy-up option within a certain amount of time from certain key early clinical data becoming available for the first licensed product. We have a defined period after notice of such buy-up option to pay Seagen a one-time $35 million fee (buy-up fee). In the event we exercise the buy-up option and pay the buy-up fee, we are entitled to receive tiered royalties based on commercial sales levels from low double-digit to high double-digit percentages of net sales of licensed products, within a range of less than 10%.

The Seagen Agreement expires on a licensed product-by-licensed product and country-by-country basis upon the expiration of Seagen’s payment obligations. Seagen may terminate the Seagen Agreement in its entirety or on a country-by-country basis for convenience following a certain notice period. Either party may terminate the Seagen Agreement upon an uncured material breach of the agreement or insolvency of the other party following a certain notice period. Depending on the reason and stage of termination, we have certain rights to obtain a license to certain intellectual property generated by Seagen under the Seagen Agreement for purposes of continued development and commercialization of research results and/or product candidates developed under the Seagen Agreement.

In January 2023, we entered into a Clinical Supply Agreement with Seagen (the Seagen Clinical Supply Agreement). Under the Seagen Clinical Supply Agreement, we will have manufactured and supplied to Seagen a specified amount of GMP drug product containing the SGN-EGFRd2 (LAVA-1223) compound and GMP diluent. At Seagen’s request, we will also deliver to Seagen any remaining GMP substance containing the SGN-EGFRd2 (LAVA-1223) compound. Under the Seagen Agreement and the Seagen Clinical Supply Agreement, we are entitled to receive reimbursement of up to $6.5 million for certain agreed-to research, manufacturing and supply activities, as well as the transfer of all manufacturing-related know-how and materials, including all CMC documentation, data and processes, to enable the manufacture of SGN-EGFRd2 (LAVA-1223) compound by or for Seagen.

Janssen Agreement

In May 2020, we entered into the Janssen Agreement for the discovery and development of novel bispecific antibody-based gamma delta T cell engagers for the treatment of cancer. Under the Janssen Agreement, we granted Janssen an exclusive, sublicensable, worldwide license under certain of our patents, materials, and know-how, including certain rights assigned to us pursuant to the VUmc Agreement, to exploit multi-specific antibody products which have variable domains specific to the licensed target or products which are directed to the licensed target, in all fields of use. We retain the right to use our technology to perform our obligations under the Janssen Agreement and for all purposes not granted to Janssen.

Together with Janssen, we are conducting certain research and discovery activities pursuant to a mutually agreed research plan designed to develop licensed product candidates not later than the stage of candidate selection. The parties have established a joint steering committee to oversee the research, information sharing, and potential amendments of the research plan. We are responsible for conducting research activities at our expense and are entitled to certain milestone payments from Janssen for product candidates that progress through certain research stages, as may be amended by the joint steering committee. Following completion of such research, Janssen has the right to determine whether to bring one or more designated

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product candidates forward into further development. If Janssen so elects, Janssen is responsible for the development, manufacture, and commercialization of the licensed products at Janssen’s sole cost and expense. Janssen is required to use commercially reasonable efforts to exploit one licensed product.

In May 2020, we received an upfront fee of $8.0 million and achieved research milestones necessary to receive $2.0 million, $1.0 million of which was received in October 2021, and $1.0 million of which was received in December 2020. We are also eligible to receive up to an aggregate of $195 million upon the achievement of certain development and commercial milestones. We also are entitled to receive tiered royalties based on commercial sales levels from low to mid-single digit percentages of net sales of licensed products for a fixed period beginning with the first commercial sale of such a licensed product in a given country of sale and expiring ten years after such sale.

Until the earlier of termination of the Janssen Agreement and a specified period of time following the first commercial sale of a licensed product, we cannot directly or through a third-party research, develop or commercialize or exploit a competing biological product that is directed to or otherwise targets the licensed target, subject to certain exceptions and limitations for third party acquiror products.

As a general rule, ownership of any inventions made by either party in the course of performing their respective activities pursuant to the Janssen Agreement will follow inventorship of such inventions, with certain defined exclusions. First, Janssen will own any invention made by either party in the course of performing their respective activities pursuant to the Janssen Agreement that is an improvement to Janssen’s background technology, relates to an antibody directed to the licensed target, is a medical use or method of treatment or relates to a licensed product. Second, we will own any invention made by either party in the course of performing their respective activities pursuant to the Janssen Agreement that is an improvement to our background technology but that is not a licensed product or that is obtained from use of the specific antibody but not as part of a licensed product. We received from Janssen a non-exclusive, worldwide, non-royalty bearing, sublicensable license under certain know-how developed by Janssen under the Janssen Agreement, and patents claiming such know-how, for certain uses necessary to exploit the specific antibodies.

The Janssen Agreement expires on a licensed product-by-licensed product basis upon the expiration of Janssen’s payment obligations. Janssen may terminate the Janssen Agreement in its entirety or on a country-by-country basis for convenience following a certain notice period, or in its entirety within a defined timeframe following our change of control. Either party may terminate the Janssen Agreement upon an uncured material breach of the agreement or insolvency of the other party following a certain notice period. Following each research stage, the Janssen Agreement will automatically terminate if the parties decide not to proceed with the subsequent research stage or, following the completion of all research stages, if Janssen decides not to bring a candidate forward into further development. Depending on the reason and stage of termination, we have certain rights to receive a license to certain intellectual property generated by Janssen under the Janssen Agreement for purposes of continued development and commercialization of research results and/or product candidates developed under the Janssen Agreement.

VUmc agreements

In 2017, we entered into the VUmc Agreement. Under the VUmc Agreement, VUmc granted us an exclusive, although non-exclusive with respect to certain intangible know-how, worldwide, sublicensable license under certain patent rights and know-how owned by VUmc, effectively including research and other services provided in collaboration by VUmc since 2017 to develop, make, and sell licensed products. In 2021, VUmc assigned all of the patent rights previously licensed by us under the VUmc Agreement for no additional consideration paid. VUmc retains the right to use the patent rights and know-how for solely non-commercial research and educational purposes, but it may not conduct such work with respect to any product that is directed to a specified target for a specified time period.

Following the assignment of such patent rights, we remain obligated to pay VUmc sub to low single-digit tiered royalties on net sales of products covered by claims included in the assigned patent rights. Royalties are payable on a country-by-country basis for a royalty term that expires upon the expiration of the last valid claim in the assigned patent rights in such country that would be infringed by the use, manufacture, or sale of a product in such country in the absence of us having rights to such patent right. In connection with our IPO,

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we issued to VUmc 235,664 of our common share and paid $0.3 million in cash. On each of the first and second anniversary of our IPO, we are required to pay $4.7 million. Such payment shall be made in cash or common shares, at the election of the Company, valued using the closing price of common shares on the date two trading days prior to the respective anniversary of our IPO. In 2022, the Company issued 491,352 common shares to VUmc representing 50% of the payable in accordance with the VUmc agreement for the first anniversary payment. The final payment is due at the second anniversary of our IPO in March 2023. The Company and VUmc continue to collaborate and VUmc makes available certain employees to the Company who perform research and other activities for the benefit of the Company.

The continuing obligations under the VUmc Agreement, including our obligation to pay royalties, expires on a country-by-country basis upon the expiration of the last to expire valid claim of the assigned patents in such country. Following the expiration of our royalty obligations as to an assigned product in a country, we will retain title to the assigned patent rights and will no longer be obligated to pay royalties for such products. We control the prosecution and maintenance of the patent rights. Unless sooner terminated, the term of the license continues until the expiration of the last to expire of the patent rights, the latest of which is currently expected to expire in 2036.

In 2021, we entered into a master research services agreement with VUmc under which VUmc performs certain clinical research services and preclinical development for us under the direction of our Chief Scientific Officer. Under this master research services agreement, we own all rights, title, ownership and interest in and to any inventions made, created or prepared by VUmc in connection with the Agreement. This agreement automatically terminates in the case of our bankruptcy. Either party may terminate this agreement upon 60 days’ written notice for any reason or upon 60 days’ written notice upon uncured material breaches of the terms of the agreement.

Manufacturing, sales and marketing

Given the stage of our lead programs, we are in the process of building our U.S. commercial, medical affairs and manufacturing infrastructure and intend to build, alone or with potential future partners, our global commercialization and distribution capabilities over time for our lead clinical candidates. We do not own or operate manufacturing facilities for the production of our clinical candidates, and we rely on third-party contract manufacturers for all of our required raw materials, manufacturing devices, active pharmaceutical ingredients and finished product for our preclinical research and clinical trials. The prices of our primary raw materials have not historically been volatile.

Competition

The biotechnology industry is characterized by rapidly advancing technologies, intense competition and a strong emphasis on intellectual property and proprietary rights. We believe that our proprietary Gammabody platform and our product candidates, strategic collaboration and scientific and clinical expertise may provide us with competitive advantages. Any product candidates that we successfully develop and commercialize will have to compete with existing therapies and new therapies that may become available in the future. We also face potential competition from a variety of companies in the gamma delta T cell field.

Our competitors in the field of gamma delta T cell therapy include Adicet Bio, Inc., Editas Medicine, Inc., Takeda Pharmaceutical Company Ltd, ImCheck Therapeutics SAS, Immatics Biotechnologies GmbH, Leucid Bio Ltd, PhosphoGam Inc., Shattuck Labs Inc., Sandhill Therapeutics, Inc, Gadeta BV, Eureka Therapeutics, Inc., In8Bio, Inc., and TC BioPharm Limited. Our gamma delta T cell product candidates may also compete with other T cell engaging therapies as well as NK cell-engaging therapies.

In addition, many of our current or potential competitors, either alone or with their collaboration partners, have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials and delivering approved products than we do today. Mergers and acquisitions in the pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our competitors. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. We also compete with these companies in recruiting, hiring and retaining qualified scientific and management talent, establishing clinical trial sites and patient registration for clinical trials, obtaining

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manufacturing slots at contract manufacturing organizations, and in acquiring technologies complementary to, or necessary for, our programs. Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective (particularly if they represent cures), have fewer or less severe side effects, are more convenient, or are less expensive than any products that we may develop. Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market. The key competitive factors affecting the success of all of our programs are likely to be their efficacy, safety, method of administration and availability of reimbursement.

Intellectual property

Overview

We actively seek to protect our proprietary technology, inventions, improvements to inventions and other intellectual property that is commercially important to the development of our business by a variety of means, such as seeking, maintaining and defending patent rights, whether developed internally or licensed from third parties. We also may rely on trade secrets and know-how relating to our proprietary technology platform, on continuing technological innovation and on future in-licensing opportunities to develop, strengthen and maintain the strength of our position in the field of biotechnology that may be important for the development of our business. Additional regulatory protection may also be afforded through data exclusivity, market exclusivity and patent term extensions where available.

We have developed or exclusively in-licensed numerous patent and patent applications, know-how and trade secrets relating to the development and commercialization of our product candidates and the underlying Gammabody platform. We currently own or in-license: three issued U.S. patents, seven pending U.S. patent applications, seven pending European regional-phase patent applications, three pending PCT patent application, fourteen issued patents in other territories and fifty two pending patent applications in other territories that are important to the development of our business.

Our strategic initiative is to protect proprietary technology, inventions and improvements to inventions and other intellectual property that may be commercially important to the development of our business. We also intend to seek additional patent protection or rely upon trade secret rights to protect other technologies that may be used to manufacture and develop our gamma delta T cell products. We are a party to license and assignment agreements that grant us exclusive rights to use specific technologies in our gamma-delta T cell products and in the manufacturing and development of our products. For more information, see “Intellectual Property.”

Our future commercial success depends, in part, on our ability to: obtain and maintain patent and other proprietary protection for commercially important technology, inventions and know-how related to our business; defend and enforce our patents; preserve the confidentiality of our trade secrets; and operate without infringing the valid enforceable patents and proprietary rights of third parties. Our ability to stop third parties from making, using, selling, offering to sell or importing our products may depend on the extent to which we have rights under valid and enforceable patents or trade secrets that cover these activities. With respect to both our owned and licensed intellectual property, we cannot be sure that patents will issue with respect to any of the pending patent applications to which we license rights or with respect to any patent applications that we or our licensors may file in the future, nor can we be sure that any of our licensed patents or any patents that may be issued in the future to us or our licensors will be commercially useful in protecting our product candidates and methods of manufacturing the same.

Our patent portfolio

As of December 31, 2022, our patent portfolio included U.S. and foreign patents and patent applications. Our patent portfolio also includes in-licensed patents and patent applications that we have filed on our own technologies, including technologies related to our preclinical programs and our manufacturing technologies. The patents and patent applications in our patent portfolio cover technology used in our own development programs, as well as technology used in our collaborations with Seagen and Janssen. We have granted Seagen an exclusive worldwide license for the development and commercialization of SGN-EGFRd2 (LAVA-1223), an advanced preclinical asset that utilizes LAVA’s proprietary Gammabody technology to target

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epidermal growth factor receptor (EGFR)-expressing solid tumors. We have granted Janssen an exclusive worldwide license for the development and commercialization of a confidential product candidate.

The issued patents and patent applications directed to our most advanced programs are summarized below:

LAVA-051

For LAVA-051, LAVA’s patent portfolio includes two issued U.S. patents and five U.S. pending patent applications, five pending European patent applications, fourteen foreign issued patents and twenty seven pending foreign patent applications. These patent and patent applications contain claims or supporting disclosures directed to the LAVA-051 composition of matter and to methods of treating diseases of interest using LAVA-051. These issued patents and patents issuing from these pending patent applications, if any, are expected to expire between 2035 and 2039, excluding any potential patent term extensions or patent term adjustments.

LAVA-1207

For LAVA-1207, LAVA’s patent portfolio includes one issued U.S. patent, two U.S pending patent applications, two pending European patent applications, eight foreign issued patents, eight foreign pending patent applications and two pending PCT patent applications containing claims or supporting disclosures directed to the LAVA-1207 composition of matter and to methods of treating diseases of interest using LAVA-1207. This issued patent and patents issuing from these pending patent applications, if any, are expected to expire between 2035 and 2041, excluding any potential patent term extensions or patent term adjustments.

LAVA-1266

For LAVA-1266, LAVA’s patent portfolio includes one issued U.S. patent, two U.S pending patent applications, two pending European patent applications, eight foreign issued patents, eight foreign pending patent applications and three pending PCT patent applications containing claims or supporting disclosures directed to the LAVA-1266 lead composition of matter and to methods of treating diseases of interest using LAVA-1266 is issued patent and patents issuing from these pending patent applications, if any, are expected to expire between 2035 and 2042, excluding any potential patent term extensions or patent term adjustments.

LAVA-1278

For LAVA-1278, LAVA’s patent portfolio includes one issued U.S. patent, three U.S pending patent applications, three pending European patent applications, eight foreign issued patents, eighteen foreign pending patent applications and two pending PCT patent applications containing claims or supporting disclosures directed to the LAVA-1278 lead composition of matter and to methods of treating diseases of interest using the LAVA-1278 lead compound. This issued patent and patents issuing from these pending patent applications, if any, are expected to expire between 2035 and 2040, excluding any potential patent term extensions or patent term adjustments.

We believe our manufacturing and assay development patents, patent applications and related know-how may provide us with additional intellectual property protection relating to LAVA-051, LAVA-1207 and preclinical candidates.

Platform Technology

Our patent portfolio also includes patent families relating to our Gammabody platform, including three patent families that are generally related to the antibodies that activate gamma delta T cells, dosing of such antibodies and uses of such antibodies for certain patient groups.

Patent term and term extensions

The term of a patent, and the protection it affords, is limited. Individual patents have terms for varying periods depending on the date of filing of the patent application or the date of patent issuance and the legal term of patents in the countries in which they are obtained. Generally, utility patents issued for applications filed in the United States are granted a term of 20 years from the earliest effective filing date of a non-provisional patent application. However, as to the extension associated with FDA approval, the extension cannot be longer than

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five years and cannot extend the patent term beyond 14 years from the date of FDA approval. In addition, only one patent applicable to an FDA-approved drug or biologic is eligible for the extension, and only those claims covering the approved drug, a method for using it, or a method of manufacturing may be extended. The terms of foreign patents vary in accordance with provisions of applicable local law, but typically are also 20 years from the earliest effective filing date and similar provisions are available in certain foreign jurisdictions to extend the term of a patent that covers an approved drug. In the future, if our product candidates receive FDA approval, we expect to apply for patent term extensions where applicable on patents covering those products.

We plan to seek patent term extensions to any of our issued patents in any jurisdiction where these are available. However, there is no guarantee that the applicable authorities, including the FDA in the United States, will agree with our assessment of whether these extensions should be granted, and if granted, the length of these extensions. All taxes, annuities or maintenance fees for a patent, as required by the USPTO and various foreign jurisdictions, must be timely paid in order for the patent to remain in force for the full term.

Our patents and patent applications may be subject to procedural or legal challenges by others. We may be unable to obtain, maintain and protect the intellectual property rights necessary to conduct our business, and we may be subject to claims that we infringe, misappropriate or otherwise violate the intellectual property rights of others, which could materially harm our business. For more information, see the section titled “Risk Factors—Risks Related to Our Intellectual Property.”

Trade secrets and know-how

We also rely on trade secrets, know-how, continuing technological innovation and confidentiality agreements to develop and maintain our proprietary position and protect aspects of our business that are not amenable to, or that we do not consider appropriate for, patent protection, including our proprietary processes for expanding and activating therapeutic quantities of gamma delta T cells and modified gamma-delta T cells. We seek to protect our proprietary technology and processes, in part, by entering into confidentiality agreements and invention assignment agreements with our employees, consultants, scientific advisors, contractors and others who may have access to proprietary information, under which they are bound to keep all confidential information concerning our business or financial affairs developed by or made known to them during the course of the party’s relationship with us confidential and not disclose such information to third parties except in specific circumstances, and in certain cases, to assign to us inventions made during the term of their employment or service. However, trade secrets can be difficult to protect. We cannot guarantee that we have entered into confidentiality agreements with each party that may have or have had access to our trade secrets or proprietary technology and processes or that these agreements will afford us adequate protection of our intellectual property and proprietary rights. These agreements and policies may be breached, and we may not have adequate remedies for any breach. In addition, our trade secrets or substantially equivalent proprietary information and techniques may otherwise become known or be independently discovered by competitors. To the extent that our contractors, commercial partners, collaborators, employees or consultants use intellectual property owned by others in their work for us, disputes may arise as to the rights in the resulting know-how and inventions. For more information, see the section titled “Risk Factors—Risks Related to Our Intellectual Property.”

We also seek to preserve the integrity and confidentiality of our data and trade secrets by maintaining physical security of our premises and physical and electronic security of our information technology systems.

Government Regulation

The FDA and other regulatory authorities at federal, state, and local levels, and in the European Union and in other foreign countries, extensively regulate, among other things, the research, development, testing, manufacture, quality control, import, export, safety, effectiveness, labeling, packaging, storage, distribution, record keeping, approval, advertising, promotion, marketing, post-approval monitoring, and post- approval reporting of biologics such as those we are developing. We, along with third-party contractors, will be required to navigate the various preclinical, clinical and commercial approval requirements of the governing regulatory agencies of the countries in which we wish to conduct studies or seek approval or licensure of our product candidates.

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The process required by the FDA before biologic product candidates may be marketed in the United States generally involves the following:

● completion of preclinical laboratory tests and animal studies performed in accordance with the FDA’s current Good Laboratory Practices regulation;

● submission to the FDA of an IND, which must become effective before clinical trials may begin and must be updated annually or when significant changes are made;

● approval by an independent IRB or ethics committee at each treatment site before the trial is commenced;

● performance of adequate and well controlled human clinical trials to establish the safety, purity and potency of the proposed biologic product candidate for its intended purpose;

● preparation of and submission to the FDA of a BLA after completion of all pivotal clinical trials;

● satisfactory completion of an FDA Advisory Committee review, if applicable;

● a determination by the FDA within 60 days of its receipt of a BLA to file the application for review;

● satisfactory completion of an FDA pre-approval inspection of the manufacturing facility or facilities at which the proposed product is produced to assess compliance with cGMP and to assure that the facilities, methods and controls are adequate to preserve the biological product’s continued safety, purity and potency, and of selected clinical investigation sites to assess compliance with Good Clinical Practices, or GCP; and

● FDA review and approval of the BLA to permit commercial marketing of the product for particular indications for use in the United States.

Preclinical and clinical development

Before testing any biologic product candidate in humans, the product candidate must undergo preclinical testing. Preclinical tests, also referred to as nonclinical studies, include laboratory evaluations of product chemistry, toxicity and formulation, as well as in vivo studies to assess the potential safety and activity of the product candidate.

Prior to beginning the first clinical trial with a product candidate, we must submit an IND to the FDA and a CTA to the EMA for trials conducted in the United States and European Union, respectively. An IND and CTA are requests for authorization to administer an investigational new drug product to humans. The central focus of an IND or a CTA submission is on the general investigational plan and the protocol(s) for clinical studies. The IND or a CTA also includes results of animal and in vitro studies assessing the toxicology, pharmacokinetics, pharmacology, and pharmacodynamic characteristics of the product; chemistry, manufacturing, and controls information; and any available human data or literature to support the use of the investigational product. An IND or a CTA must be cleared or approved before human clinical trials may begin.

Clinical trials involve the administration of the investigational product to human subjects under the supervision of qualified investigators in accordance with GCPs, which include the requirement that all research subjects provide their informed consent for their participation in any clinical study. Clinical trials are conducted under protocols detailing, among other things, the objectives of the study, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. A separate submission to the existing IND must be made for each successive clinical trial conducted during product development and for any subsequent protocol amendments.

Furthermore, an independent IRB for each site proposing to conduct the clinical trial must review and approve the plan for any clinical trial and its informed consent form before the clinical trial begins at that site and must monitor the study until completed. Regulatory authorities, the IRB or the sponsor may suspend a clinical trial at any time on various grounds, including a finding that the subjects are being exposed to an unacceptable health risk or that the trial is unlikely to meet its stated objectives. Some studies also include oversight by an independent group of qualified experts organized by the clinical study sponsor, known as a data safety

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monitoring board, which provides authorization for whether or not a study may move forward at designated check points based on access to certain data from the study and may halt the clinical trial if it determines that there is an unacceptable safety risk for subjects or other grounds, such as no demonstration of efficacy. There are also requirements governing the reporting of ongoing clinical studies and clinical study results to public registries.

For purposes of BLA approval, human clinical trials are typically conducted in three sequential phases that may overlap.

● Phase 1—The investigational product is initially introduced into healthy human subjects or patients with the target disease or condition. These studies are designed to test the safety, dosage tolerance, absorption, metabolism and distribution of the investigational product in humans, the side effects associated with increasing doses, and, if possible, to gain early evidence on effectiveness.

● Phase 2—The investigational product is administered to a limited patient population with a specified disease or condition to evaluate the preliminary efficacy, optimal dosages and dosing schedule and to identify possible adverse side effects and safety risks. Multiple Phase 2 clinical trials may be conducted to obtain information prior to beginning larger and more expensive Phase 3 clinical trials.

● Phase 3—The investigational product is administered to an expanded patient population to further evaluate dosage, to provide statistically significant evidence of clinical efficacy and to further test for safety, generally at multiple geographically dispersed clinical trial sites. These clinical trials are intended to establish the overall risk/benefit ratio of the investigational product and to provide an adequate basis for product approval.

During all phases of clinical development, regulatory agencies require extensive monitoring and auditing of all clinical activities, clinical data and clinical trial investigators. Annual progress reports detailing the results of the clinical trials must be submitted to regulatory agencies.

Post-approval clinical trials, sometimes referred to as Phase 4 studies may be made a condition to approval of the BLA.

Concurrent with clinical trials, companies may complete additional animal studies and develop additional information about the biological characteristics of the product candidate and must finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other things, must develop methods for testing the identity, strength, quality and purity of the final product, or for biologics, the safety, purity and potency. Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

Compliance with cGMP requirements

Manufacturers of biologics must comply with applicable cGMP regulations, including quality control and quality assurance and maintenance of records and documentation. Manufacturers and others involved in the manufacture and distribution of such products also must register their establishments with FDA and certain state agencies. Both domestic and foreign manufacturing establishments must register and provide additional information to FDA upon their initial participation in the manufacturing process. Establishments may be subject to periodic, unannounced inspections by government authorities to ensure compliance with cGMP requirements and other laws.

BLA submission and review

Assuming successful completion of all required testing in accordance with all applicable regulatory requirements, the results of product development, nonclinical studies and clinical trials are submitted to the FDA as part of a BLA requesting approval to market the product for one or more indications. The BLA must include all relevant data available from pertinent preclinical and clinical studies, including negative or ambiguous results as well as positive findings, together with detailed information relating to the product’s chemistry, manufacturing, controls, and proposed labeling, among other things. The submission of a BLA

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requires payment of a substantial application user fee to FDA, unless a waiver or exemption applies, and the sponsor of an approved BLA is also subject to an annual program fee.

Once a BLA has been submitted, the FDA’s goal is to review standard applications within ten months after it accepts the application for filing, or, if the application qualifies for priority review, six months after the FDA accepts the application for filing. In both standard and priority reviews, the review process is often significantly extended by FDA requests for additional information or clarification. The FDA reviews a BLA to determine, among other things, whether a product is safe, pure and potent and the facility in which it is manufactured, processed, packed, or held meets standards designed to assure the product’s continued safety, purity and potency. The FDA may convene an advisory committee to provide clinical insight on application review questions. The FDA will not approve an application unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. Additionally, before approving a BLA, the FDA will typically inspect one or more treatment sites to assure compliance with GCP. If the FDA determines that the application, manufacturing process or manufacturing facilities are not acceptable, it will outline the deficiencies in the submission and often will request additional testing or information. Notwithstanding the submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval.

After the FDA evaluates a BLA and conducts inspections of manufacturing facilities where the investigational product and/or its drug substance will be produced, the FDA may issue an approval letter or a Complete Response letter. An approval letter authorizes commercial marketing of the product with specific prescribing information for specific indications. A Complete Response letter will describe all of the deficiencies that the FDA has identified in the BLA, except that where the FDA determines that the data supporting the application are inadequate to support approval, the FDA may issue the Complete Response letter without first conducting required inspections, testing submitted product lots, and/or reviewing proposed labeling. The FDA may delay or refuse approval of a BLA if applicable regulatory criteria are not satisfied, require additional testing or information and/or require post-marketing testing and surveillance to monitor safety or efficacy of a product.

If regulatory approval of a product is granted, such approval will be granted for certain indications and may entail limitations on the indicated uses for which such product may be marketed. For example, the FDA may approve the BLA with a Risk Evaluation and Mitigation Strategy, or REMS, to ensure the benefits of the product outweigh its risks. Once approved, the FDA may withdraw the product approval if compliance with pre- and post-marketing requirements is not maintained or if problems occur after the product reaches the marketplace.

Expedited development and review programs

FDA is authorized to expedite the review of BLAs in several ways. Under the fast-track program, a sponsor may request FDA to designate the product as a fast-track product if the product is intended to treat a serious or life-threatening condition and demonstrates the potential to address unmet medical needs. Fast-track designation has opportunities for frequent interactions with the review team during product development and, once a BLA is submitted, the product may be eligible for priority review. A fast-track product may also be eligible for rolling review, where the FDA may consider for review sections of the BLA on a rolling basis before the complete application is submitted, if the sponsor provides a schedule for the submission of the sections of the BLA, the FDA agrees to accept sections of the BLA and determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of the first section of the BLA.

A product intended to treat a serious or life-threatening disease or condition may also be eligible for breakthrough therapy designation to expedite its development and review. A product can receive breakthrough therapy designation if preliminary clinical evidence indicates that the product may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. The designation includes all the fast-track program features, as well as more intensive FDA interaction and guidance beginning as early as Phase 1 and an organizational commitment to expedite the development and review of the product, including involvement of senior managers.

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Any marketing application for a biologic submitted to the FDA for approval, including a product with a fast-track designation and/or breakthrough therapy designation, may be eligible for other types of FDA programs intended to expedite the FDA review and approval process, such as priority review and accelerated approval. A product is eligible for priority review if it has the potential to provide a significant improvement in the treatment, diagnosis or prevention of a serious disease or condition compared to marketed products. For products containing new molecular entities, priority review designation means the FDA’s goal is to act on the marketing application within six months of the 60-day filing date (compared with ten months under standard review).

Additionally, products studied for their safety and effectiveness in treating serious or life-threatening diseases or conditions may receive accelerated approval upon a determination that the product has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments.

Regenerative medicine advanced therapy, or RMAT, designation like breakthrough therapy designation, provides potential benefits that include more frequent meetings with FDA to discuss the development plan for the product candidate and eligibility for rolling review and priority review. Products granted RMAT designation may also be eligible for accelerated approval based on a surrogate or intermediate endpoint reasonably likely to predict long-term clinical benefit, or reliance upon data obtained from a meaningful number of sites, including through expansion to additional sites.

Fast track designation, breakthrough therapy designation, priority review, accelerated approval, and RMAT designation do not change the standards for approval but may expedite the development or approval process.

Orphan drug designation

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biologic intended to treat a rare disease or condition, which is a disease or condition that affects fewer than 200,000 individuals in the United States, or more than 200,000 individuals in the United States for which there is no reasonable expectation that the cost of developing and making available in the United States a drug or biologic for this type of disease or condition will be recovered from sales in the United States for that drug or biologic. The orphan drug designation does not convey any advantage in, or shorten the duration of, the regulatory review or approval process.

If a product that has orphan drug designation subsequently receives the first FDA approval for the disease for which it has such designation, the product is entitled to orphan drug exclusive approval (or exclusivity), which means that the FDA may not approve any other applications, including a full BLA, to market the same biologic for the same indication for seven years, except in limited circumstances, such as a showing of clinical superiority to the product with orphan drug exclusivity.

A designated orphan drug may not receive orphan drug exclusivity if it is approved for a use that is broader than the indication for which it received orphan designation. In addition, exclusive marketing rights in the United States may be lost if the FDA later determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or condition.

Post-approval requirements

Any products manufactured or distributed by us pursuant to FDA approvals are subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to record-keeping, reporting of adverse experiences, periodic reporting, product sampling and distribution, and advertising and promotion of the product. After approval, most changes to the approved product, such as adding new indications or other labeling claims, are subject to prior FDA review and approval. Biologic manufacturers and their subcontractors are required to register their establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with cGMP, which impose certain procedural and documentation requirements upon us and our third-party

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manufacturers. Changes to the manufacturing process are strictly regulated, and, depending on the significance of the change, may require prior FDA approval before being implemented. FDA regulations also require investigation and correction of any deviations from cGMP and impose reporting requirements upon us and any third-party manufacturers that we may decide to use. Accordingly, manufacturers must continue to expend time, money and effort in the area of production and quality control to maintain compliance with cGMP and other aspects of regulatory compliance.

The FDA may withdraw approval if compliance with regulatory requirements and standards is not maintained or if problems occur after the product reaches the market. Later discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory requirements, may result in revisions to the approved labeling to add new safety information; imposition of post-market studies or clinical studies to assess new safety risks; or imposition of distribution restrictions or other restrictions under a REMS program. Other potential consequences include, among other things:

● restrictions on the marketing or manufacturing of a product, complete withdrawal of the product from the market or product recalls;

● fines, warning letters or holds on post-approval clinical studies;

● refusal of the FDA to approve pending applications or supplements to approved applications, or suspension or revocation of existing product approvals;

● product seizure or detention, or refusal of the FDA to permit the import or export of products;

● consent decrees, corporate integrity agreements, debarment or exclusion from federal healthcare programs;

● mandated modification of promotional materials and labeling and the issuance of corrective information;

● the issuance of safety alerts, Dear Healthcare Provider letters, press releases and other communications containing warnings or other safety information about the product; or

● injunctions or the imposition of civil or criminal penalties.

The FDA closely regulates the marketing, labeling, advertising and promotion of biologics. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off label uses. Failure to comply with these requirements can result in, among other things, adverse publicity, warning letters, corrective advertising and potential civil and criminal penalties. The FDA does, however, restrict manufacturer’s communications on the subject of off-label use of their products.

Biosimilars and reference product exclusivity

The ACA includes a subtitle called the Biologics Price Competition and Innovation Act of 2009, or BPCIA, which created an abbreviated approval pathway for biological products that are biosimilar to or interchangeable with an FDA-approved reference biological product. To date, several biosimilars have been licensed under the BPCIA, and numerous biosimilars have been approved in Europe. The FDA has issued several guidance documents outlining an approach to review and approval of biosimilars.

Under the BPCIA, an application for a biosimilar product may not be submitted to the FDA until four years following the date that the reference product was first licensed by the FDA. In addition, the approval of a biosimilar product may not be made effective by the FDA until 12 years from the date on which the reference product was first licensed. During this 12-year period of exclusivity, another company may still market a competing version of the reference product if the FDA approves a full BLA for the competing product containing that applicant’s own preclinical data and data from adequate and well controlled clinical trials to demonstrate the safety, purity and potency of its product. The BPCIA also created certain exclusivity periods for biosimilars approved as interchangeable products.

The BPCIA is complex and continues to be interpreted and implemented by the FDA. In addition, recent government proposals have sought to reduce the 12-year reference product exclusivity period. Other aspects

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of the BPCIA, some of which may impact the BPCIA exclusivity provisions, have also been the subject of recent litigation. As a result, the ultimate impact, implementation, and impact of the BPCIA is subject to significant uncertainty.

Regulation and Procedures Governing Approval of Medicinal Products in the European Union

The process governing approval of medicinal products in the European Union generally follows the same lines as in the United States. It entails satisfactory completion of pharmaceutical development, nonclinical studies and adequate and well-controlled clinical trials to establish the safety and efficacy of the medicinal product for each proposed indication. It also requires the submission to relevant competent authorities for clinical trials authorization and to the EMA or to competent authorities in European Union Member States for a marketing authorization application, or MAA, and granting of a marketing authorization by these authorities before the product can be marketed and sold in the European Union.

Clinical Trial Approval

Until December 2021, clinical trials in the European Union were approved under the Clinical Trials Directive 2001/20/EC and the Directive 2005/28/EC through national legislation of the member states. Under this system, an applicant obtained approval from the competent national authority of a European Union member state in which the clinical trial would be conducted or in multiple member states if the clinical trial was to be conducted in several member states. Additionally, the applicant could only start a clinical trial at a specific study site after the independent ethics committee has issued a favorable opinion. The CTA would be accompanied by an investigational medicinal product dossier with supporting information prescribed by Directive 2001/20/EC and Directive 2005/28/EC and corresponding national laws of the member states and further detailed in applicable guidance documents.

In December 2021, the European Union adopted a new Clinical Trials Regulation (EU) No 536/2014, which replaced the current Clinical Trials Directive 2001/20/EC. It overhauled the current system of approvals for clinical trials in the European Union. Specifically, the new regulation is directly applicable in all member states and aims at simplifying and streamlining the approval of clinical trials in the European Union. For instance, the new Clinical Trials Regulation provides for a streamlined application procedure via a single-entry point and strictly defined deadlines for the assessment of clinical trial applications.

In January 2022,  Clinical Trials Directive (EC) No. 2001/20/EC and its national implementing legislation in the EU Member States was repealed and the New Clinical Trials Regulation became effective. The new Clinical Trials Regulation enables sponsors to submit one online application via a single online platform known as the Clinical Trials Information System (CTIS) for approval to run a clinical trial in several European countries, making it more efficient to carry out such multinational trials.  The Regulation also makes it more efficient for EU Member States to evaluate and authorize such applications together, via the Clinical Trials Information System.

For the first year of implementation, until January 30, 2023, clinical trial sponsors could select whether to apply to start a clinical trial under the new Clinical Trials Regulations. After January 2023, clinical trial sponsors need to apply to start a clinical trial under the new Clinical Trials Regulations.

Orphan Drug Designation and Exclusivity

Regulation (EC) No. 141/2000 and Regulation (EC) No. 847/2000 provide that a product can be designated as an orphan drug by the European Commission if its sponsor can establish: that the product is intended for the diagnosis, prevention or treatment of (1) a life-threatening or chronically debilitating condition affecting not more than five in ten thousand persons in the European Union when the application is made, or (2) a life-threatening, seriously debilitating or serious and chronic condition in the European Union and that without incentives it is unlikely that the marketing of the drug in the European Union would generate sufficient return to justify the necessary investment.

An Orphan Drug Designation provides many benefits, including fee reductions, regulatory assistance and the possibility to apply for a centralized European Union marketing authorization. Marketing authorization for an

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orphan drug leads to a ten-year period of market exclusivity. The market exclusivity period for the authorized therapeutic indication may, however, be reduced to six years if, at the end of the fifth year, it is established that the product no longer meets the criteria for Orphan Drug Designation because, for example, the product is sufficiently profitable not to justify market exclusivity.

Marketing Authorization

To obtain a marketing authorization for a product under the European Union regulatory system, an applicant must submit an MAA, either to EMA using the centralized procedure or to competent authorities in European Union Member States using the other procedures (decentralized procedure, national procedure, or mutual recognition procedure).

The centralized procedure provides for the grant of a single marketing authorization by the European Commission that is valid for all European Union member states as well as in the European Economic Area countries Iceland, Liechtenstein and Norway. Pursuant to Regulation (EC) No. 726/2004, the centralized procedure is compulsory for specific products, including for medicines produced by certain biotechnological processes, products designated as orphan medicinal products, advanced therapy products and products with a new active substance indicated for the treatment of certain diseases, including products for the treatment of cancer and auto-immune diseases. For products with a new active substance indicated for the treatment of other diseases and products that are highly innovative or for which the centralized procedure is in the interest of public health, the centralized procedure may be optional.

Under the centralized procedure, the Committee for Medicinal Products for Human Use, or the CHMP, established at the EMA is responsible for conducting the assessment of a product to define its risk/benefit profile. Under the centralized procedure, the maximum timeframe for the evaluation of an MAA is 210 days, excluding clock stops when additional information or written or oral explanation is to be provided by the applicant in response to questions of the CHMP. Accelerated evaluation may be granted by the CHMP in exceptional cases, when a medicinal product is of major interest from the point of view of public health and therapeutic innovation. If the CHMP accepts such a request, the time limit of 210 days will be reduced to 150 days, but it is possible that the CHMP may revert to the standard time limit for the centralized procedure if it determines that it is no longer appropriate to conduct an accelerated assessment.

Periods of Authorization and Renewals

A marketing authorization is valid for five years, in principle, and it may be renewed after five years based on a reevaluation of the risk benefit balance by the EMA or by the competent authority of the authorizing member state. To that end, the marketing authorization holder must provide the EMA or the competent authority with a consolidated version of the file in respect of quality, safety and efficacy, including all variations introduced since the marketing authorization was granted, at least six months before the marketing authorization ceases to be valid. Once renewed, the marketing authorization is valid for an unlimited period, unless the European Commission or the competent authority decides on justified grounds relating to pharmacovigilance to proceed with one additional five-year renewal period.

Regulatory Requirements after Marketing Authorization

Following approval, the holder of the marketing authorization is required to comply with a range of requirements applicable to the manufacturing, marketing, promotion and sale of the medicinal product. These include compliance with the European Union’s stringent pharmacovigilance or safety reporting rules, pursuant to which post-authorization studies and additional monitoring obligations can be imposed. In addition, the manufacturing of authorized products, for which a separate manufacturer’s license is mandatory, must also be conducted in strict compliance with the EMA’s GMP requirements and comparable requirements of other regulatory bodies in the European Union, which mandate the methods, facilities and controls used in manufacturing, processing and packing of drugs to assure their safety and identity. Finally, the marketing and promotion of authorized products, including industry-sponsored continuing medical education and advertising directed toward the prescribers of drugs and/or the general public, are strictly regulated in the European Union under Directive 2001/83EC, as amended.

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Other healthcare laws and compliance requirements

In the United States, our activities are potentially subject to regulation by various federal, state and local authorities in addition to the FDA, including but not limited to, the Centers for Medicare & Medicaid Services, or CMS, other divisions of the U.S. Department of Health and Human Services (such as the Office of Inspector General and the Health Resources and Service Administration), the Department of Justice, or the DOJ, and individual U.S. Attorney offices within the DOJ, and state and local governments. For example, research, sales, marketing activities and scientific/educational grant programs must comply with the anti-fraud and abuse provisions of the Social Security Act, the False Claims Act, transparency laws, the health information privacy and security laws, similar state laws, and regulations, each as amended, as applicable.

The federal Anti-Kickback Statute prohibits, among other things, any person or entity, from knowingly and willfully offering, paying, soliciting or receiving any remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or in return for purchasing, leasing, ordering or arranging for the purchase, lease or order of any item or service for which payment may be made, in whole or in part, under Medicare, Medicaid or other federal healthcare programs.

The federal false claims laws, including the FCA, which can be enforced by private citizens through civil qui tam actions and civil monetary penalty laws prohibit any person or entity from, among other things, knowingly presenting, or causing to be presented, a false or fraudulent claim for payment to, or approval by, federal healthcare programs, or knowingly making, using, or causing to be made or used a false record or statement material to a false or fraudulent claim to the federal government.

We may be subject to data privacy and security regulations by both the federal government and the states in which we conduct our business. HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, and its implementing regulations, impose requirements relating to the privacy, security and transmission of individually identifiable health information on certain healthcare providers, healthcare clearinghouses, and health plans, known as covered entities, and independent contractors, or agents of covered entities that receive or obtain individually identifiable health information in connection with providing a service on behalf of a covered entity, known as a business associates, as well as their covered subcontractors. Among other things, HITECH makes HIPAA’s privacy and security standards directly applicable to business associates. HITECH also created four new tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce HIPAA and seek attorneys’ fees and costs associated with pursuing federal civil actions.

In Europe, we are subject to Regulation (EU) 2016/679, the General Data Protection Regulation, or GDPR, in relation to our collection, control, processing and other use of personal data. The GDPR is directly applicable in each European Union Member State, however, it provides that European Member States may introduce further conditions, including limitations which could limit our ability to collect, use and share personal data (including health and medical information), or could cause our compliance costs to increase, ultimately having an adverse impact on our business. These changes may lead to additional compliance costs and could increase our overall risk.

We are also subject to European Union rules with respect to cross-border transfers of personal data out of the European Union and European Economic Area (EEA). Recent developments in the EU have created complexity and uncertainty regarding transfers of personal data from the EEA to the United States. As supervisory authorities issue further guidance on personal data export mechanisms, including circumstances where the standard contractual clauses cannot be used, and/or start taking enforcement action, we could suffer additional costs, complaints and/or regulatory investigations or fines, and/or if we are otherwise unable to transfer personal data between and among countries and regions in which we operate, it could affect the manner in which we provide our services, the geographic location or segregation of our relevant systems and operations, and could adversely affect our financial results.

Additionally, the federal Physician Payments Sunshine Act, or the Sunshine Act, within the ACA, and its implementing regulations, require that certain manufacturers of drugs, devices, biological and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program (with certain exceptions) report annually to CMS information related to certain payments or other

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transfers of value made or distributed to physicians (defined to include doctors, dentists, optometrists, podiatrists and chiropractors), other healthcare professionals (such as physician assistants and nurse practitioners) and teaching hospitals, or to entities or individuals at the request of, or designated on behalf of, the physicians and teaching hospitals, and to report annually certain ownership and investment interests held by physicians and their immediate family members.

In addition, many states and foreign jurisdictions have enacted analogous versions of these laws.

Ensuring business arrangements with third parties comply with applicable healthcare laws and regulations is a costly endeavor. If our operations are found to be in violation of any of the federal and state healthcare laws described above or any other current or future governmental regulations that apply to us, we may be subject to significant penalties, including without limitation, civil, criminal and/or administrative penalties, damages, fines, disgorgement, imprisonment, exclusion from participation in government programs, such as Medicare and Medicaid, injunctions, contractual damages, reputational harm, administrative burdens, diminished profits and future earnings, additional reporting and oversight obligations, and the curtailment or restructuring of our operations, any of which could adversely affect our ability to operate our business and our results of operations. Additionally, if any of the physicians or other providers or entities with whom we expect to do business are found not to comply with applicable laws, they may be subject to significant civil, criminal and administrative sanctions, including exclusion from government funded healthcare programs.

Coverage, pricing and reimbursement

In the United States and in foreign markets, sales of any products for which we receive regulatory approval for commercial sale will depend, in part, on the extent to which third-party payors provide coverage and establish adequate reimbursement levels for such products. Coverage and reimbursement by a third-party payor may depend upon several factors, including the third-party payor’s determination that use of a therapeutic is:

● a covered benefit under its health plan;

● safe, effective and medically necessary;

● appropriate for the specific patient;

● cost-effective; and

● neither experimental nor investigational.

Third-party payors are increasingly challenging the price, examining the medical necessity, and reviewing the cost-effectiveness of medical products, therapies and services, in addition to questioning their safety and efficacy. Obtaining coverage and reimbursement approval of a product from a third-party payor is a time-consuming and costly process that could require us to provide to each payor supporting scientific, clinical and cost-effectiveness data for the use of our product on a payor-by-payor basis, with no assurance that coverage and adequate reimbursement will be obtained. Obtaining reimbursement for our products may be particularly difficult because of the higher prices often associated with branded drugs and drugs administered under the supervision of a physician. Limited coverage and less than adequate reimbursement may reduce the demand for, or the price of, any product for which we obtain regulatory approval. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

Additionally, in the United States there is no uniform policy among third-party payors for coverage or reimbursement. Third-party payors often rely upon Medicare coverage policy and payment limitations in setting their own coverage and reimbursement policies, but also have their own methods and approval processes. If reimbursement is not available or is available only at limited levels, we may not be able to successfully commercialize any product candidate that we successfully develop. Further, we or our collaborators may develop companion diagnostic tests for use with our product candidates. We or our collaborators will be required to obtain coverage and reimbursement for these separate and apart from the coverage and reimbursement we seek for our other product candidates, once approved.

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Under currently applicable U.S. law, certain products not usually self-administered (including injectable drugs), such as our product candidates, once approved, may be eligible for coverage under Medicare Part B. As a condition of receiving Medicare Part B reimbursement for a manufacturer’s eligible drugs or biologicals, the manufacturer is required to participate in other government healthcare programs, including the Medicaid Drug Rebate Program and the 340B Drug Pricing Program.

In the European Union, pricing and reimbursement schemes vary widely from country to country. The downward pressure on health care costs has become intense. As a result, increasingly high barriers are being erected to the entry of new products. In addition, in some countries, cross-border imports from low-priced markets exert competitive pressure that may reduce pricing within a country. Any country that has price controls or reimbursement limitations may not allow favorable reimbursement and pricing arrangements.

Healthcare reform

In the United States and some foreign jurisdictions, there have been, and continue to be, legislative and regulatory changes and proposed changes regarding the healthcare system that could prevent or delay marketing approval of product candidates, restrict or regulate post-approval activities, and affect the ability to profitably sell product candidates for which marketing approval is obtained. Among policymakers and payors in the United States and elsewhere, there is significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality and/or expanding access. In the United States, the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives.

For example, the ACA and its implementing regulations substantially changed healthcare financing and delivery by both governmental and private insurers. Among the ACA provisions of importance to the pharmaceutical and biotechnology industries, in addition to those otherwise described above, are the following:

● an annual, nondeductible fee on any entity meeting certain aggregated sales thresholds that manufactures or imports certain specified branded prescription drugs and biologic agents apportioned among these entities according to their market share in some government healthcare programs;

● an increase in the statutory minimum rebates a manufacturer must pay under the Medicaid Drug Rebate Program to 23.1% and 13%, both subject to an inflationary component, of the average manufacturer price for most branded and generic drugs, respectively, and capped the total rebate amount for innovator drugs at 100% of the average manufacturer price;

● a new Medicare Part D coverage gap discount program, in which manufacturers must now agree to offer 70% point-of-sale discounts (in addition to 5% discounts paid by Part D plans) off negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap period, as a condition for the manufacturers’ outpatient drugs to be covered under Medicare Part D;

● extension of manufacturers’ Medicaid rebate liability for brand and generic drugs to individuals who are enrolled in Medicaid managed care plans, in addition to drugs purchased under fee-for-service Medicaid plans;

● expansion of eligibility criteria for Medicaid programs by, among other things, allowing states to expand Medicaid coverage to additional individuals and by adding new mandatory eligibility categories for individuals with income at or below 138% of the federal poverty level, thereby potentially increasing manufacturers’ Medicaid rebate liability. To date, 38 states and Washington, DC have expanded Medicaid;

● a requirement for health plans to publish rates related to prescription drugs;

● expansion of the entities eligible for discounts under the 340B Drug Discount Program;

● a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative clinical effectiveness research, along with funding for such research;

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● a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted, or injected;

● a requirement to annually report certain information regarding provision of any payment or item of value that applicable manufacturers provide to physicians or other covered recipients;

● establishment of a Center for Medicare and Medicaid Innovation at CMS to test innovative payment and service delivery models to lower Medicare and Medicaid spending, potentially including prescription drug spending; and

● an FDA licensure framework for follow on biologic products.

Since its enactment, there have been executive, judicial and Congressional challenges to the ACA. Most of the ACA survived such challenges but further healthcare reform measures of the Biden administration may impact the ACA or our business. On August 16, 2022, President Biden signed the Inflation Reduction Act of 2022, or IRA, into law, which, among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in ACA marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and creating a new manufacturer discount program. Complying with any new legislation or reversing changes implemented under the ACA could be time-intensive and expensive.

Other legislative changes have been adopted since the ACA was enacted. These changes include, among other things aggregate reductions to Medicare payments to providers of 2% per fiscal year pursuant to the Budget Control Act of 2011, which began in 2013, and due to subsequent legislative amendments to the statute, including the BBA, which will remain in effect through 2030, unless additional Congressional action is taken. Under current legislation, the actual reduction in Medicare payments will vary from 1% in 2022 to up to 4% in the final fiscal year of this sequester. The American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to several providers, including hospitals and cancer treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years.

Further, in the United States there has been heightened governmental scrutiny over the manner in which manufacturers set prices for their marketed products, which has resulted in several Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to drug pricing, reduce the cost of prescription drugs under government payor programs, and review the relationship between pricing and manufacturer patient programs. For example, the Biden administration has announced its intention to pursue certain priority policy initiatives, such as the reduction of prescription drug pricing, including legislative proposals to allow the government to negotiate drug prices for Medicare and other governmental health programs, increasing access and coverage for mental health, and lower nursing home care costs. In addition, the IRA, among other things, (i) directs the U.S. Department of Health and Human Services, or HHS, to negotiate the price of certain high-expenditure, single-source drugs and biologics covered under Medicare, and subject drug manufacturers to civil monetary penalties and a potential excise tax by offering a price that is not equal to or less than the negotiated “maximum fair price” for such drugs and biologics under the law, and (ii) imposes rebates with respect to certain drugs and biologics covered under Medicare Part B or Medicare Part D to penalize price increases that outpace inflation.

The IRA permits HHS to implement many of these provisions through guidance, as opposed to regulation, for the initial years. These provisions will take effect progressively starting in fiscal year 2023, although they may be subject to legal challenges. It is currently unclear how the IRA will be implemented but is likely to have a significant impact on the pharmaceutical industry. Further, the Biden administration released an additional executive order on October 14, 2022, directing HHS to submit a report on how the Center for Medicare and Medicaid Innovation can be further leveraged to test new models for lowering drug costs for Medicare and Medicaid beneficiaries. It is unclear whether this executive order or similar policy initiatives will be implemented in the future. We expect that additional U.S. federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that the U.S. federal government will pay for healthcare

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products and services. Further, any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors.

The Foreign Corrupt Practices Act

The FCPA prohibits any U.S. individual or business from paying, offering, or authorizing payment or offering of anything of value, directly or indirectly, to any foreign official, political party or candidate for the purpose of influencing any act or decision of the foreign entity in order to assist the individual or business in obtaining or retaining business. The FCPA also obligates companies whose securities are listed in the United States to comply with accounting provisions requiring us to maintain books and records that accurately and fairly reflect all transactions of the corporation, including international subsidiaries, and to devise and maintain an adequate system of internal accounting controls for international operations.

Additional regulation

In addition to the foregoing, state and federal U.S. and European Union laws regarding environmental protection and hazardous substances, including the Occupational Safety and Health Act, the Resource Conservancy and Recovery Act and the Toxic Substances Control Act, affect our business. These and other laws govern our use, handling and disposal of various biological, chemical and radioactive substances used in, and wastes generated by, our operations. If our operations result in contamination of the environment or expose individuals to hazardous substances, we could be liable for damages and governmental fines. We believe that we are in material compliance with applicable environmental laws and that continued compliance therewith will not have a material adverse effect on our business. We cannot predict, however, how changes in these laws may affect our future operations.

We are also subject to numerous federal, state and local laws relating to such matters as safe working conditions, manufacturing practices and fire hazard control. We may incur significant costs to comply with such laws and regulations now or in the future.

C. Organizational structure

LAVA Therapeutics, N.V. is the parent company of LAVA Therapeutics, Inc., a wholly-owned subsidiary incorporated in the U.S.

D. Property, plants and equipment

During the first quarter of 2023, we moved our headquarters from Yalelaan 60 to Yalelaan 62, 3584 CM Utrecht, the Netherlands, where we occupy approximately 19,702 square feet of office and laboratory space under a lease that expires March 31, 2026. The lease of our previous headquarters at Yalelaan 60 will expire and end in the second quarter of 2023. We also occupy a small office space of approximately 5,621 square feet located at 520 Walnut Street, Suite 1150, Philadelphia, Pennsylvania 19106, U.S. We believe that our facilities are adequate to meet our current needs and that additional space can be obtained on commercially reasonable terms as needed.

Item 4A: Unresolved Staff Comments

None.

Item 5: Operating and Financial Review and Prospects

You should read the following discussion of our financial condition and results of operations in conjunction with the financial statements and the notes included elsewhere in this Annual Report. The following discussion contains forward-looking statements that involve certain risks and uncertainties. Our actual results could differ materially from those discussed in these statements. Factors that could cause or contribute to these differences include those discussed below and elsewhere in this Annual Report, particularly under the “Item 3. Key Information—Risk factors” and “Special Note Regarding Forward-Looking Statements” sections.

Our audited consolidated financial statements are included elsewhere in this Annual Report. These financial statements are in accordance with and comply with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standards Board (IASB). As permitted by the rules of the SEC for

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foreign private issuers who prepare their financial statements in accordance with and comply with IFRS, in accordance with and compliance with IFRS and as issued by the IASB, we do not reconcile our financial statements to accounting principles generally accepted in the U.S. (U.S. GAAP).

A. Operating results

Global Conditions

In March 2020, the COVID-19 virus caused a worldwide pandemic. Although the pandemic has impacted the timing of onboarding investigational sites and enrolling patients in our ongoing Phase 1/2a clinical trial for LAVA-051 and LAVA-1207, to date we have not experienced any material business disruption or impact to our consolidated financial statements as a result of the pandemic.

In addition, there may be adverse effects on our business condition and results from general economic and market conditions and overall fluctuations in the United States and international equity markets, including deteriorating market conditions due to investor concerns regarding inflation and hostilities between Russia and Ukraine.

Components of operating results

The following discussion reflects the Company’s revision of previously issued consolidated financial statements to adjust for immaterial prior period misstatements, primarily related to foreign currency translations. Further information regarding the revision is included in our consolidated financial statements, "Note 23 — Revision of Immaterial Misstatements," which are included in “Item 17: Financial Statements” in this Annual Report on Form 20-F.

Revenue from research and license agreements

To date, we have not generated any revenues from product sales, and we do not expect to generate any revenue from the sale of products in the near future. Our success depends primarily on the successful development and regulatory approval of our product candidates and our ability to finance operations. If our development efforts result in clinical success and regulatory approval or we enter into collaboration agreements with third parties for our product candidates, we may generate revenue from those product candidates.

In September 2022, we entered into an exclusive worldwide license agreement with Seagen to develop, manufacture and commercialize SGN-EGFRd2 (LAVA-1223), an advanced preclinical asset that utilizes our proprietary Gammabody technology to target EGFR-expressing solid tumors. Under the terms of the agreement, we received a $50 million nonrefundable upfront payment in October 2022 and are eligible to receive up to approximately $650 million upon the achievement of development, regulatory and commercial milestones, as well as royalties ranging from the single digits to the mid-teens on future sales, within a range of 10%. The agreement also provides Seagen with the opportunity to exclusively negotiate rights to apply our proprietary Gammabody platform on up to two additional tumor targets.

Seagen has also granted us a one-time option to obtain increased royalties if we exercise a buy up option within a certain amount of time from certain key early clinical data becoming available for the first licensed product. Following notice, we have a specified period to exercise the buy-up option to pay Seagen a one-time $35.0 million fee, the (buy-up fee). In the event we exercise the buy-up option and pay the buy-up fee, we are entitled to receive tiered royalties based on commercial sales levels from low double-digit to high double-digit percentages of net sales of licensed products, within a range of 10%.

Royalties are payable on a licensed product-by-licensed product and country-by-country basis beginning with the first commercial sale of such licensed product in such country of sale and expiring ten years after such sale, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory. For additional information, see “License Agreements – Seagen Agreement” and Note 4 to the consolidated financial statements.

In May 2020, we entered into the Janssen Agreement. As part of the Janssen Agreement, we received a non-refundable upfront payment of $8.0 million. As of December 31, 2022, there was no unearned income related

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to this payment. The revenue related to the upfront payment was recognized as revenue on a straight-line basis over the remaining term of the research activities under the Janssen Agreement, as this method approximated the underlying research and development activities over time. In December 2020, we achieved the first Research Milestone, as defined in the Janssen Agreement, triggering a milestone payment of $1.0 million. In 2021, we achieved the second Research Milestone, triggering a milestone payment of $1.0 million. Each milestone payment was recorded as revenue when achieved, as each was linked to the completion of specific and separable research and development deliverables, rather than recorded over time like the upfront payment.

We are entitled to receive tiered royalties based on commercial sales levels from low to mid-single digit percentages of net sales of licensed products. Royalties are payable on a licensed product-by-licensed product and country-by-country basis beginning with the first commercial sale of such licensed product in such country of sale and expiring ten years after such sale, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory. For additional information, see “License Agreements – Janssen Agreement” and Note 4 to the consolidated financial statements.

Operating expenses

Our primary categories of operating expenses are research and development expenses and general and administrative expenses.

Research and development expenses consist primarily of the costs incurred in performing research and development activities and conducting preclinical studies and clinical trial activities. Our research and development expenses consist of:

● personnel-related expenses such as salaries, employee benefits and share-based compensation for employees engaged in research and development;

● expenses incurred under agreements with contract manufacturing organizations, or CMOs, contract research organizations, or CROs, and consultants that conduct and support preclinical studies and clinical trial activities;

● expenses incurred in connection with our VUmc Agreement;

● costs associated with obtaining and maintaining patents and other intellectual property; and

● expenses including laboratory supplies and research materials, facility expenses, and depreciation of research and development fixed assets.

We expense research and development costs as incurred. We do not allocate employee-related costs, costs associated with our discovery efforts, laboratory supplies, depreciation, facility expenses or other indirect costs to specific product development programs because these costs are deployed across multiple programs, and as such, are not separately classified.

We expect that our research and development expenses will increase substantially in connection with our ongoing and planned preclinical and clinical development activities in the near term and in the future.

General and administrative expenses consist of personnel-related expenses for employees involved in general corporate functions, including accounting, finance, insurance, tax, legal and human relations, costs associated with outside professional fees such as legal counsel and auditors, costs associated with use by these functions of facilities and equipment, such as facility expenses, depreciation expenses, other operating costs not included in research and development, and general corporate expenses. General and administrative expenses are expensed as incurred.

We expect general and administrative expenses will increase in the future as we increase our headcount to support our continued research and development activities.

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Income tax

We are subject to income taxes in the Netherlands and the United States.

A tax charge was recognized during the year ended December 31, 2022 due to the U.S. profitable position. As of December 31, 2022, we had Dutch tax loss carryforwards of $5.9 million. Furthermore, an amount of $84.1 million of IP development costs was capitalized for tax purposes. This amount can be offset against future income derived from this IP.

The 2022 and 2021 taxable amounts are not final as the 2022 and 2021 Dutch corporate income tax returns are still in draft. The 2020 Dutch corporate income tax return is final and has been filed.

On the basis of the 2022 annual accounts, there are accounting-to-tax differences of $32 million. These differences primarily relate capitalization of IP development costs for Dutch corporate income tax purposes and IFRS 16 lease amounts. Other differences relate to non-deductible share-based payment expenses, expenses which were treated as non-deductible for Dutch corporate income tax purposes and other non-deductible mixed expenses.

For further information on tax loss carryforwards under Dutch corporate income tax law, please refer to Note 9 of the consolidated financial statements.

Comparison of the Years Ended December 31, 2022 and 2021:

Research and license revenue

Our research and license revenue was $19.4 million and $5.4 million for the years ended December 31, 2022 and 2021, respectively.

In connection with the Seagen Agreement we entered into in September 2022, we recognized $17.9 million in revenue for the year ended December 31, 2022. Of that amount, $15.2 million related to the nonrefundable upfront payment and $2.7 million related to reimbursement for research activities. We determined that the one-time buy-up fee of $35.0 million represents variable consideration, for which we have deferred revenue recognition until such time the company chooses to exercise the option or allows it to expire.

Additionally, we had research and license revenue of $1.5 million and $5.4 million for the years ended December 31, 2022 and 2021, respectively, attributable to our Janssen Agreement. In connection with this collaboration, we received a non-refundable upfront payment of $8.0 million that was recognized on a straight-line basis over the two-year term of the research activities under the Janssen Agreement, as this method approximated the underlying research and development activities over time. As of December 31, 2022, we had no remaining unearned income related to this payment.

Research and development expenses

Below are our research and development expenses for the years ended December 31, 2022 and 2021:

	For the Year Ended
	December 31,
(in thousands)	2022		2021		Variance
Pre-clinical and clinical trial expenses	$	28,178	$	14,188	$	13,990
Personnel-related expenses		6,150		4,955		1,195
Research and development activities expenses		2,241		1,843		398
Share-based compensation expense		1,975		788		1,187
Facilities and other research and development expenses		1,546		814		732
VUmc and other license expenses		15		14,357		(14,342)
	$	40,105	$	36,945	$	3,160

Research and development expenses were $40.1 million for the year ended December 31, 2022, compared to $36.9 million for the year ended December 31, 2021. Pre-clinical and clinical trial expenses increased by $14.0 million primarily due to the initiation and ongoing activities of the clinical trials for LAVA-051 and LAVA-

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1207, partner project expenses and manufacturing scale-up costs. Personnel-related expenses increased by $1.2 million and associated non-cash share-based compensation expense increased by $1.2 million due to the increased research and development headcount. Facilities and other research and development expenses increased by $0.7 million primarily due to increased office and laboratory leases and travel costs. These increases were partially offset by a $14.3 million decrease due to the VUmc license expenses recorded in 2021 related to an exit fee triggered by our IPO.

General and administrative expenses

Below are our general and administrative expenses for the years ended December 31, 2022 and 2021:

	For the Year Ended
	December 31,
(in thousands)	2022		2021		Variance
Personnel-related expenses	$	5,010	$	3,800	$	1,210
Professional and consultant fees		3,954		2,593		1,361
Insurance, facilities, fees and other related costs		3,022		2,506		516
Share-based compensation expense		2,138		3,119		(981)
	$	14,124	$	12,018	$	2,107

General and administrative expenses were $14.1 million for the year ended December 31, 2022, compared to general and administrative expenses of $12.0 million for the year ended December 31, 2021. The increase was primarily due to increases in personnel-related expenses of $1.2 million due to the increase in general and administrative headcount and severance costs. Professional and consultant fees increased by $1.4 million due primarily to costs associated with being a public company and temporary staff. Insurance, facilities, fees and other related costs increased by $0.5 million primarily due to increases in directors’ and officers’ insurance costs and leased office space. The decrease of $1.0 million in share-based compensation expense was due primarily to the reversal of expenses associated with stock option forfeitures due to the departure of our former chief financial officer.

Interest income (expense), net

Interest expense, net increased $0.9 million, from an expense of $0.6 million during the year ended December 31, 2021, to income of $0.3 million for the year ended December 31, 2022. Interest expense, net includes interest on borrowings associated with our Innovation Credit from Rijksdienst voor Ondernemend Nederland, lease interest and negative interest on cash deposits held at financial institutions, net of interest income from cash equivalents and investments.

Foreign currency exchange gain, net

Our foreign currency exchange gain increased to $2.9 million for the year ended December 31, 2022, compared to $2.0 million for the year ended December 31, 2021. This increase was due to the impact of the fluctuation of the USD currency rate compared to the Euro on transaction gains and losses on cash and investments and other transactions denominated in USD held and occurring in the Euro functional currency entity.

Comparison of the Years Ended December 31, 2021 and 2020

Research and license revenue

Our research and license revenue increased to $5.4 million for the year ended December 31, 2021 compared to $3.7 million for the year ended December 31, 2020. Research and license revenue was solely attributable to our collaboration with Janssen, which we entered into in May 2020. In connection with this collaboration, we received a non-refundable upfront payment of $8.0 million that was recognized on a straight-line basis over the two-year term of the research activities under the agreement, as this method of recognition matched the pattern in which we provide research services to Janssen. As of December 31, 2021, we had $1.5 million of unearned income related to this payment. We achieved milestone payments of $1.0 million during each of the years ended December 31, 2021 and 2020. Each milestone payment was recorded as revenue when

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achieved, as each was linked to the completion of specific and separable research and development deliverables, rather than recorded over time like the upfront payment.

Research and development expenses

Below are our research and development expenses for the years ended December 31, 2021 and 2020:

	For the Year Ended
	December 31,
(in thousands)	2021		2020		Variance
VUmc license expenses	$	14,357	$	203	$	14,154
Pre-clinical and clinical trial expenses		14,188		11,325		2,863
Personnel-related expenses		4,955		2,276		2,679
Research and development activities expenses		1,843		1,022		821
Share-based compensation expense		788		232		556
Facilities and other research and development expenses		814		643		171
	$	36,945	$	15,701	$	21,244

Research and development expenses were $36.9 million for the year ended December 31, 2021, compared to $15.7 million for the year ended December 31, 2020. The increase was primarily due to a VUmc license fees liability of $14.4 million triggered by our IPO. Pre-clinical and clinical trial expenses increased by $2.9 million primarily due to the start of the clinical trial for LAVA-051, clinical development preparations for LAVA-1207 and expenditures in connection with our Janssen collaboration. Personnel-related expenses increased by $2.7 million and non-cash share-based compensation expense increased by $0.6 million due to the increased research and development headcount and associated granting of stock option awards.

General and administrative expenses

Below are our general and administrative expenses for the years ended December 31, 2021 and 2020:

	For the Year Ended
	December 31,
(in thousands)	2021		2020		Variance
Personnel-related expenses	$	3,800	$	1,474	$	2,326
Share-based compensation expense		3,119		326		2,793
Professional and consultant fees		2,593		683		1,910
Insurance, facilities, fees and other related costs		2,506		236		2,270
	$	12,018	$	2,719	$	9,299

General and administrative expenses were $12.0 million for the year ended December 31, 2021, compared to general and administrative expenses of $2.7 million for the year ended December 31, 2020. The increase was primarily due to increases in personnel-related expenses of $2.3 million and noncash share-based compensation expense of $2.8 million, due to the increased general and administrative headcount and associated granting of stock option awards. Professional and consultant fees increased by $1.9 million due to increased legal and assurance services primarily due to becoming a publicly traded company. Insurance, facilities, fees and other related costs increased by $2.3 million primarily due to directors’ and officers’ insurance costs and other costs associated with being a publicly traded company.

Interest expense, net

Interest expense, net was $0.6 million for the year ended December 31, 2021, compared to $0.3 million for the year ended December 31, 2020. Interest expense, net includes interest on borrowings associated with our Innovation Credit from Rijksdienst voor Ondernemend Nederland, lease interest and negative interest on cash deposits held at financial institutions, net of interest income from cash equivalents and investments.

Foreign currency exchange gain (loss), net

For the years ended December 31, 2021 and 2020, foreign currency exchange gain (loss), net increased by $2.9 million, from a loss of $0.9 million during the year ended December 31, 2020 to a gain of $2.0 million

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during the year ended December 31, 2021. This increase was due to the impact of the fluctuation of the USD currency rate compared to the Euro on transaction gains and losses on cash and investments and other transactions denominated in USD held and occurring in a Euro functional currency entity.

B. Liquidity and capital resources

As of December 31, 2022, we had cash, cash equivalents and investments totaling $132.9 million, compared to cash and cash equivalents of $133.2 million as of December 31, 2021. We hold our cash and cash equivalents in both USD and Euros. We have historically funded our operations primarily through issuance of preference shares prior to our IPO from the sale of common shares in our IPO and more recently through research and licensing revenue. Our expenditures are primarily related to research and development activities and general and administrative activities to support business operations.

In October 2022, we received a nonrefundable up-front payment of $50.0 million in connection with entering into the Seagen Agreement.

In 2019, we received a $5.5 million Innovation Credit from Rijksdienst voor Ondernemend Nederland. Borrowings under the Innovation Credit, which bear interest at 10.0%, will be received in quarterly installments through 2023. The repayment of principal and accrued interest is due on June 30, 2025. As of December 31, 2022, we had $4.6 million in borrowings under the Innovation Credit.

In March 2021, we closed our IPO and received net proceeds from the IPO of approximately $89.0 million after deducting underwriting discounts and commissions of $7.0 million and offering costs of $4.5 million. In April 2021, we received additional net proceeds from the IPO of $5.9 million from the exercise of the overallotment option by the underwriters. In addition, in September 2020 and March 2021, we received $56.6 million in net proceeds from our Series C financing, net of repurchasing Series A Preferred and common shares.

Cash and cash equivalents, and short-term marketable securities are financial instruments that potentially subject the Company to concentrations of credit risk. As of December 31, 2022 and 2021, cash consists of cash deposited with three financial institutions and account balances may exceed federally insured limits.

On March 10, 2023, Silicon Valley Bank, Santa Clara, California, or SVB, was closed by the California Department of Financial Protection and Innovation and the Federal Deposit Insurance Corporation, or FDIC, was appointed receiver. On March 26, 2023, First–Citizens Bank & Trust Company, Raleigh, North Carolina, or First Citizens, purchased all deposits and loans of SVB, and the former SVB reopened as First-Citizens Bank & Trust Company on Monday, March 27, 2023. We had a banking relationship with SVB, including $32.0 million as of December 31, 2022 held in Euros. Although most SVB depositors received full access to their funds on March 13, 2023, we had disrupted and delayed access to funds held in multi-currency accounts while the systems’ conversions were being completed to allow full–service banking, which has been resolved. As of March 31, 2023 we had $0.1 million of cash held at SVB as First-Citizens Bank & Trust Company. The majority of our cash is held at other banks that can be used to fund operations and believe the purchase of SVB’s assets by First Citizens will not have any material impact on our liquidity and capital resources.

Besides the above, management believes that the Company is not exposed to significant credit risk due to the financial strength of these institutions.

Based on our current operating plan, we believe that our existing cash, cash equivalents and investments as of December 31, 2022 are sufficient to meet our projected cash requirements for at least 12 months from the date of this annual report. However, our operating plan may change as a result of many factors currently unknown to us, and we may need to seek additional funds sooner than planned. Our future funding requirements will depend on many factors, including, but not limited to, our ability to:

● continue the ongoing and planned development of our product candidates, including LAVA-051 and LAVA-1207;

● initiate, conduct and complete any ongoing, anticipated or future preclinical studies and clinical trials for our current and future product candidates;

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● develop processes and scale manufacturing production for our current and future product candidates in accordance with cGMP;

● seek regulatory and marketing approvals for LAVA-051, LAVA-1207 and any of our other product candidates that successfully complete clinical trials;

● discover and develop additional bispecific gamma delta engagers and make further investments in our Gammabody platform to identify additional product candidates;

● maintain, protect and expand our intellectual property portfolio; including costs associated with opposing and invalidating competitor patents and licensing other technologies for our product candidates;

● establish a sales, marketing, manufacturing and distribution, supply chain and other commercial infrastructure in the future to commercialize any current or future product candidate for which we may obtain marketing approval;

● expand our operations in the United States and Europe;

● add clinical, scientific, operational, financial and management information systems and personnel, including personnel to support our product development and planned future commercialization efforts;

● acquire or in-license additional product candidates and technologies;

● develop a potential companion diagnostic;

● incur additional legal, accounting and other expenses associated with operating as a public company;

● address any events outside of our control, including, but not limited to, outbreaks of infectious diseases such as the COVID-19 pandemic; and

● general economic and market conditions and overall fluctuations in the United States and international equity markets, such as deteriorating conditions due to investor concerns regarding inflation and the hostilities between Russia and Ukraine.

Until such time as we can generate significant revenue from sales of our product candidates, if ever, we expect to finance our operations through equity offerings, debt financings or other capital sources, which may include strategic collaborations or other arrangements with third parties. Additional funds may not be available to us on acceptable terms or at all. If we raise additional funds by issuing equity or convertible debt securities, our shareholders will suffer dilution and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common shareholders. Debt financing, if available, may involve restrictive covenants limiting our flexibility in conducting future business activities, and, in the event of insolvency, debt holders would be repaid before holders of our equity securities receive any distribution of our corporate assets. If we raise funds through collaborations or other similar arrangements with third parties, we may have to relinquish valuable rights to technologies, future revenue streams, product candidates or research programs or grant licenses on terms that may not be favorable to us and/or may reduce the value of our common shares. Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the United States and worldwide.

Additional funds may not be available when we need them on terms that are acceptable to us, or at all. If adequate funds are not available to us on a timely basis, we may be required to delay, limit, scale back or cease our research and development activities, preclinical studies and clinical trials for our product candidates and our establishment and maintenance of sales and marketing capabilities or other activities that may be necessary to commercialize our product candidates.

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The following table summarizes our cash flows for each of the years ended December 31, 2022, 2021 and 2020 (in thousands):

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Net cash provided by (used in) operating activities	$	4,043	$	(28,647)	$	(9,307)
Net cash provided by (used in) investing activities		9,346		(43,545)		(502)
Net cash provided by financing activities		283		151,160		18,969
Net increase in cash and cash equivalents	$	13,672	$	78,968	$	9,160

Cash Flows Provided by (Used in) Operating Activities

Net cash provided by operating activities for the year ended December 31, 2022 was $4.0 million, compared to net cash used in operating activities of $28.6 million for the year ended December 31, 2021. The increase was primarily due to an increase of deferred revenue of $38.2 million and a decrease in loss before income tax of $10.5 million. Both were the result of receipt of the $50.0 million nonrefundable up-front payment received in connection with our Seagen Agreement in October 2022. This increase was primarily offset by $14.9 million net decreases in changes in other working capital.

Net cash used in operating activities for the year ended December 31, 2021 was $28.6 million, compared to net cash used in operating activities of $9.3 million for the year ended December 31, 2020. The increase was primarily due to an increase in loss before income tax of $26.3 million, partially offset by an increase of $0.9 million of increased non-cash operating expenses including share-based compensation, depreciation, lease amortization, foreign currency exchange and amortization of investment bond premiums, and an increase in changes in working capital of $6.1 million, driven primarily by changes in deferred revenue due to the Janssen Agreement and license liabilities associated with the VUmc Agreement.

Cash Flows Provided By (Used in) Investing Activities

Cash flows provided by investing activities for the year ended December 31, 2022 were $9.3 million compared to net cash used in investing activities of $43.5 million for the year ended December 31, 2021. During the year ended December 31, 2022, we received $80.8 million from the maturities of investments, offset by investment purchases of $70.9 million and equipment purchases of $0.6 million. During the year ended December 31, 2021, we purchased $45.3 million in investments and $0.8 million in equipment, offset by proceeds from maturities of investments of $2.5 million.

Cash flows used in investing activities for the year ended December 31, 2021 were $43.5 million, compared to $0.5 million for the year ended December 31, 2020. During the year ended December 31, 2021, we purchased $45.3 million in investments in debt securities and received proceeds from maturities of investments of $2.5 million. We also made equipment purchases of $0.8 million and $0.5 million for the years ended December 31, 2021 and 2020, respectively.

Cash Flows Provided by Financing Activities

Cash flows provided by financing activities for the year ended December 31, 2022 of $0.3 million were primarily comprised of proceeds from borrowings of $0.6 million, partially offset by principal payments on lease liabilities of $0.3 million.

Cash flows provided by financing activities for the year ended December 31, 2021 of $151.2 million were primarily comprised of net proceeds of $94.2 million from our IPO, including the exercise of the underwriters’ over-allotment option, net proceeds from the Series C financing of $61.8 million and proceeds from borrowings of $0.7 million, partially offset by payments of $5.2 million for Series A preferred share and common share repurchases and $0.3 million in repayments of lease liabilities.

Off-Balance Sheet Arrangements

We have not entered into any off-balance sheet arrangements or any holdings in variable interest entities.

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C. Research and development, patents and licenses, etc.

Please refer to “A. Operating results” and “B. Liquidity and capital resources” in this Item 5 and “B. Business overview – Intellectual Property” included in Item 4 elsewhere in this annual report.

D. Trend information

Please refer to “A. Operating results” in this Item 5.

E. Critical Accounting Estimates

We prepare our financial statements in accordance with IFRS as issued by the IASB, which requires us to make judgments, estimates and assumptions that affect the reported amounts of our assets and liabilities and the disclosure of our contingent assets and liabilities at the end of each fiscal period and the reported amounts of revenue and expenses during each fiscal period. Critical accounting policies are defined as those policies that are reflective of significant judgments, estimates and uncertainties, which would potentially result in materially different results under different assumptions and conditions. Based on this definition, we have identified the critical accounting policies and significant judgments addressed below. We also have other accounting policies, which involve the use of estimates, judgments and assumptions that are significant to understanding our results, but the impact of these estimates, judgments and assumptions on our financial condition or operating performance is not considered material. Please see these policies in the notes to our audited consolidated financial statements included elsewhere in this annual report.

We regularly evaluate these judgments and estimates based on our own historical experience, knowledge and assessment of current business and other conditions and our expectations regarding the future based on available information and assumptions that we believe to be reasonable, which together form our basis for making judgments about matters that are not readily apparent from other sources. We believe the following accounting policies involve the most significant judgments, estimates and assumptions used in the preparation of our financial statements.

Clinical trial expenses

As part of the process of preparing our financial statements, we are required to estimate our clinical trial expenses. Our clinical trial accrual process seeks to account for expenses resulting from our obligations under contracts with vendors, consultants and CROs and clinical site agreements in connection with conducting clinical trials. The financial terms of these contracts are subject to negotiations, which vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided to us under such contracts. Our objective is to reflect the appropriate clinical trial expenses in our financial statements by matching the appropriate expenses with the period in which services and efforts are expended. We account for these expenses according to the progress of the trial as measured by subject progression and the timing of various aspects of the trial.

We determine accrual estimates based on estimates of the services received and efforts expended that take into account discussion with applicable personnel and outside service providers as to the progress or state of completion of trials. During a clinical trial, we adjust our clinical expense recognition if actual results differ from our estimates. We make estimates of our accrued expenses and prepaid assets as of each balance sheet date in our financial statements based on the facts and circumstances known to us at that time. Our clinical trial accrual and prepaid assets are dependent, in part, upon the receipt of timely and accurate reporting from CROs and other third-party vendors. Although we do not expect our estimates to differ materially from amounts we actually incur, our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in us reporting amounts that are too high or too low for any particular period.

Deferred tax assets

We are subject to income taxes in the Netherlands and the U.S. Significant judgment is required in determining the use of net operating loss carryforwards and taxation of upfront and milestone payments for income tax purposes. There are many transactions and calculations for which the ultimate tax determination is uncertain. Where the final tax outcome of these matters is different from the amounts that were initially

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recorded, such differences will impact the current and deferred income tax assets and liabilities in the period in which such determination is made.

A tax charge was recognized during the reporting periods due to the U.S. profitable position. We have tax loss carryforwards of $5.6 million and capitalized IP development costs of $84.1 million as of December 31, 2022. As a result of the Dutch corporate income tax law, tax loss carryforwards are not subject to a time limitation and remain available for offset indefinitely. Actual offset of these losses is however limited to 50% of the taxable amount that exceeds EUR 1 million (previously losses carry forward were subject to a time limitation of six years whereas losses from 2018 and prior years were subject to a time limitation of nine years – all losses that were still available for offset on January 1, 2022 became available for offset indefinitely).

Deferred income tax assets are recognized for tax losses and other temporary differences to the extent that the realization of the related tax benefit through future taxable profits is probable. We recognize deferred tax assets arising from unused tax losses or tax credits only to the extent we have sufficient taxable temporary differences or if there is convincing other evidence that sufficient taxable profit will be available against which the unused tax losses, deduction of capitalized IP development costs or unused tax credits can be utilized by us. Our judgment is that sufficient convincing other evidence is not available and therefore, a deferred tax asset is not recognized.

In order to promote innovative technology development activities and investments in new technologies, a corporate income tax incentive has been introduced in Dutch tax law called the “Innovation Box.” Profits from self-developed qualifying intangible assets are effectively subject to a 9% income tax rate for 2021 and future years, instead of the general headline rate of 25.8% as of 2022. Lava Therapeutics N.V. believes it qualifies for the Innovation Box and is in this respect currently in a process for obtaining advance certainty from the Dutch tax authorities. For further information, please refer to Note 9 in our consolidated financial statements.

Item 6: Directors, Senior Management and Employees

A. Directors and Senior Management

Non-Executive Directors

The following table lists the current composition of the non-executive directors serving on the board of directors, including the ages of the directors, their current terms of service and year of expiry of their term, and their position:

Name	Age	Term served	Year in which term expires	Position
Kapil Dhingra	63	February 2021—Present	2024	Chairperson and Non-Executive Director
Jay Backstrom	68	June 2022—Present	2025	Non-Executive Director
Peter A. Kiener	70	January 2023—Present	2026	Non-Executive Director
James Noble	62	June 2022—Present	2025	Non-Executive Director
Christy Oliger	53	March 2023—Present	2026	Non-Executive Director
Mary E. Wadlinger	63	January 2023—Present	2026	Non-Executive Director
Karen J. Wilson	59	March 2021—Present	2024	Non-Executive Director

The following is a brief summary of the business experience of our supervisory board members. Unless otherwise indicated, the current business address for each director is the same as our business address: Yalelaan 62, 3584 CM Utrecht, the Netherlands.

Kapil Dhingra, M.B.B.S. has served as Chairperson of our board and as a non-executive director since February 2021. He has served as Managing Member of KAPital Consulting, LLC, which he also co-founded, since 2008. Dr. Dhingra currently serves on the boards of directors of several publicly traded and privately held companies, including Black Diamond Therapeutics, Inc. since January 2021, Replimune Group since July 2017, Autolus Therapeutics plc since August 2014, Median Technologies since June 2017, Kirilys

Therapeutics since March 2021, Mariana Oncology since January 2022, and Servier since January 2022. He also served on the board of directors at Five Prime Therapeutics from December 2015 to April 2021, Exosome from 2012 to August 2018, where he also served as Chairman, Advanced Accelerator Applications

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from April 2014 to January 2018, EpiTherapeutics ApS from January 2014 to May 2015, Algeta ASA from 2010 to March 2014, YM Biosciences from 2012 to February 2013, Coferon from January 2009 to June 2012, Micromet AG from 2009 to March 2012 and BioVex from 2009 to 2011. Dr. Dhingra previously served as Vice President, Head of the Oncology Disease Biology Leadership Team and Head of Oncology Clinical Development at Hoffman-La Roche from May 1999 to August 2008. He received a M.B.B.S. from the All India Institute of Medical Sciences. We believe that Dr. Dhingra is qualified to serve on our board of directors because of his extensive experience in executive positions with several pharmaceutical companies and in the clinical development of pharmaceuticals in several therapeutic areas, including in oncology, and his experience serving on the boards of several publicly traded life science companies.

Jay Thomas Backstrom, M.D., M.P.H. has served as a non-executive director since June 2022. Dr. Backstrom is currently Chief Executive Officer at Scholar Rock, a biopharmaceutical company focused on discovery and development of novel therapies targeting the TFGbeta superfamily of growth factors, a position he assumed in October 2022. From December 2019 to December 2021, he served as executive vice president, research and development, at Acceleron Pharma, which was acquired by Merck in 2021. From 2008 to 2019, Dr. Backstrom held various roles of increasing responsibility at Celgene Corporation, most recently as chief medical officer and head of regulatory affairs where he was instrumental in bringing REBLOZYL® , co-developed by Celgene and Acceleron, through regulatory approval. Prior to Celegene, he served as vice president global medical affairs and safety at Pharmion from 2002 to 2008. Earlier in his career he held industry roles at Quintiles Corporation, Hoechst Marion Roussel and Marion Merrell Dow. Dr. Backstrom also serves as a non-executive board director of Autolus Therapeutics, Be Biopharma and Disc Medicine. He earned his M.D. and completed medical training at the Lewis Katz School of Medicine at Temple University, and he received a Master’s in public health from the Saint Louis University School of Public Health. We believe Dr. Backstrom is qualified to serve on our board of directors due to his extensive leadership experience and expertise in research, development and regulatory strategy.

Peter A. Kiener, DPhil has served as a non-executive director since January 2023. He has served as a founding member of BioKien LLC since 2018 and is a consultant and part-time partner at Bridge Valley Ventures/IGC Life Sciences. From 2019 through 2021, Dr. Kiener served as interim chief executive officer at Cereius. From 2014 through 2018, he served as chief scientific officer and head of research and development at Sucampo Pharmaceuticals, which was acquired by Mallinckrodt. From 2013 to 2015, Dr. Kiener served as chief scientific officer of Ambrx Inc., a clinical-stage biopharmaceutical company focused on the development of antibody-drug conjugates (ADCs), from 2009 to 2013, Dr. Kiener served as president and co-founder of Zyngenia Inc. an early-stage biopharmaceutical company and from 2001 to 2009, he served as executive vice president and global head of biologics research and development at MedImmune LLC, the global biologics arm of AstraZeneca. He received a Bachelor of Science from Lancaster University in Lancaster, UK and his DPhil from Oxford University, Sir William Dunn School of Pathology. We believe that Dr. Kiener is qualified to serve on our board of directors due to his extensive experience leadership experience in biotechnology companies and in the clinical development of pharmaceuticals in several therapeutic areas.

James Noble, M.A. has served as a non-executive director since June 2022. From 2008 to 2019, Mr. Noble served as chief executive officer and co-founder of Adaptimmune Therapeutics. From July 2008 until March 2014, Mr. Noble was chief executive officer of Immunocore, which he also co-founded. Mr. Noble currently serves on the boards of directors of several publicly-traded and privately held companies, including Adaptimmune since 2008, Orexo AB, where he is also chairman since 2020, Sutura Therapeutics where he is also chairman since 2020 and Celleron Therapeutics since 2019 and Pneumagen, where he is also chairman since 2023. Mr. Noble has also served as a non-executive board director for publicly traded life science companies, including as deputy chairman of GW Pharmaceuticals until its acquisition by Jazz Pharmaceuticals in 2021. Mr. Noble received an M.A. from the University of Oxford. We believe that Mr. Noble is qualified to serve on our board of directors due to his extensive experience leading biotechnology companies.

Christy Oliger has served as a non-executive director since March 2023. She has over 30 years of strategic and operations experience in the biopharmaceutical industry and is recognized for building productive teams and improving operational effectiveness. From 2000 to 2020, Ms. Oliger served in several commercial leadership roles at Roche/Genentech, most recently as senior vice president, BioOncology business unit.

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She also led Roche’s global portfolio management function comprised of a late-stage development portfolio of greater than 300 projects in therapeutic areas including oncology, neurology, rare disease, respiratory, dermatology and immunology. Prior to Genentech, Ms. Oliger held several management roles at Schering-Plough. Ms. Oliger serves on the board of directors of several publicly-traded companies, including Karyopharm Therapeutics since August 2020, Reata Pharmaceuticals since April 2021, Replimune Group since September 2021 and previously served on the board of directors at Sierra Oncology from June 2021 to July 2022. Ms. Oliger received a Bachelor of Arts in Economics from the University of California at Santa Barbara. We believe Ms. Oliger is qualified to serve on our board of directors because of her strategic, operational and commercial experience in the biotechnology industry, including oncology.

Mary E. Wadlinger has served as a non-executive director since January 2023. Ms. Wadlinger most recently served as senior vice president and Chief Human Resources Officer at Forma Therapeutics from 2014 to 2022, where she led the organization and people strategy through critical growth and reorganization as the company transformed from drug discovery to a fully integrated drug development and commercial readiness company. Prior to Forma, she served as vice president, human resources at Millennium Pharmaceuticals from 2003 through 2014, a subsidiary of Takeda Pharmaceuticals where she served as a key leader in numerous corporate transformations, growth initiatives, M&A activity, and overall integration within Takeda. Ms. Wadlinger earned a Bachelor of Science degree in Finance from the University of Maine Business School. We believe Ms. Wadlinger is qualified to serve on our board of directors due to her extensive experience in corporate organization and people strategy.

Karen J. Wilson has served as a non-executive director since March 2021. She currently serves on the board of directors of Angion Biomedica since March 2020 and Connect Biopharma since December 2020, and previously served on the board of directors of Vaxart from August 2020 to August 2022. Ms. Wilson served as Senior Vice President of Finance at Jazz Pharmaceuticals plc until September 2020 after serving as Vice President of Finance and Principal Accounting Officer. Prior to joining Jazz Pharmaceuticals in February 2011, Ms. Wilson served as Vice President of Finance and Principal Accounting Officer at PDL BioPharma, Inc. She also previously served as a Principal at the consulting firm of Wilson Crisler LLC, Chief Financial Officer of ViroLogic, Inc., Chief Financial Officer and Vice President of Operations for Novare Surgical Systems, Inc., and as a consultant and auditor for Deloitte & Touche LLP. Ms. Wilson is a Certified Public Accountant and received a B.S. in Business from the University of California, Berkeley. We believe that Ms. Wilson is qualified to serve on our board of directors due to her extensive background in financial and accounting matters for public companies and her leadership experience in the life sciences industry.

Board Diversity

The table below provides certain information regarding the diversity of members of our Board as of the date of this Annual Report:

Board Diversity Matrix

Country of Principal Executive Offices	The Netherlands
Foreign Private Issuer	Yes
Disclosure Prohibited Under Home Country Law	No
Total Number of Directors	8
	Female	Male	Non-Binary	Did not disclose
Part I: Gender Identity
Directors	3	5	—	—
Part II: Demographic Background
Underrepresented Individual in Home Country	1
LGBTQ+	—
Did Not Disclose Demographic Background	—

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The table below provides certain information regarding the diversity of members of our Board as of the date of March 24, 2022, the date of our Annual Report for the year ended December 31, 2021:

Board Diversity Matrix

Country of Principal Executive Offices	The Netherlands
Foreign Private Issuer	Yes
Disclosure Prohibited Under Home Country Law	No
Total Number of Directors	8
	Female	Male	Non-Binary	Did not disclose
Part I: Gender Identity
Directors	2	6	—	—
Part II: Demographic Background
Underrepresented Individual in Home Country	—
LGBTQ+	—
Did Not Disclose Demographic Background	1

Management director and executive officers

The following table presents information about our current management director and executive officers, including their ages as of the date of this annual report:

Name	Age	Year in which term expires	Position
Stephen Hurly	54	2024	Management Director and Chief Executive Officer
Ton Adang	62	—	Chief Development Officer
Amy Garabedian	47	—	General Counsel and Corporate Secretary
Charles Morris (1)	58	—	Chief Medical Officer
Fred Powell (2)	62	—	Chief Financial Officer
Hans van der Vliet	49	—	Chief Scientific Officer

(1) Charles Morris was appointed Chief Medical Officer effective February 6, 2023.

(2) Fred Powell was appointed Chief Financial Officer effective November 1, 2022.

The following is a brief summary of the business experience of certain of our management director and executive officers.

Stephen Hurly has served as our President, Chief Executive Officer and as a management director since June 2019. Prior to joining LAVA Therapeutics, he served as President and Chief Executive Officer of Sesen Bio, a Nasdaq listed late-stage oncology firm, from September 2016 to August 2018. From August 2015 to September 2016, he served as the President and Chief Executive Officer of Viventia Bio Inc., a specialty pharmaceutical company acquired by Sesen Bio Inc in September 2016. He has served on the board of directors of PHusis Therapeutics Inc., a private targeted small molecule therapeutics company, since May 2011. Previously, he was the Chief Executive Officer of Burrill & Co.’s Merchant Banking Division, a finance business for life science companies, from June 2011 to August 2015. From June 2008 to June 2011, he was also the head of the Life Sciences Investment Banking Practice at Boenning & Scattergood, a securities asset management and investment banking firm. He graduated from Swarthmore College with a B.A. degree in Engineering and earned an M.B.A. from the University of Chicago.

Ton Adang, Ph.D., has served as our Chief Development Officer since July 2017, initially as a consultant through his management consultancy company, PMC Biopartners B.V., and then full-time beginning in August 2019. Prior to joining Lava Therapeutics, he served as Chief Operating Officer at EnCare Biotech from August 2014 to December 2017, as Chief Operating Officer at Fast Forward Pharmaceuticals from October 2012 to October 2017, as Project Director at AM-Pharma from August 2014 to September 2016 and as Chief Operating Officer at SimiBio BV from July 2011 to June 2014. Dr. Adang also previously served in

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various roles at Merck, including as Site Scientific Operations Lead from March 2010 to July 2011 and as Senior Director of Project & Pipeline Management from November 2009 to March 2010. He received his PhD in Bioorganic Chemistry and Biopharmaceutical Sciences from the University of Leiden at the Divisions of Bio-Pharmaceutical Sciences and Bio-Organic Chemistry, and his MSc in Life Sciences from Wageningen University.

Amy Garabedian has served as our General Counsel and Corporate Secretary since July 2021. She has advised pharmaceutical & biotech companies from start-ups to multi-national public companies on the complex legal issues for almost twenty years.  From 2015 to 2021, Ms. Garabedian served as associate general counsel of Spark Therapeutics (Roche), where she served as a strategic and innovative advisor, playing an instrumental role in the successful U.S. launch of the first gene therapy for a genetic disease, led key business development transactions, and enabled pre-clinical, clinical and commercial product development.  Earlier in her career, Ms. Garabedian held positions of increasing responsibility at Sandoz (Novartis) and as a business and finance attorney at Ballard Spahr LLP.   She holds a B.S. in genetics and developmental biology from Penn State University, a M.S. in regulatory affairs from Temple University and a J.D. from Widener University Delaware School of Law.

Charles Morris, MBChB, MRCP, has served as our Chief Medical Officer since February 2023. Dr. Morris is a medical oncologist with over 25 years of oncology drug development experience in the international biotech and pharmaceutical industry. From April 2021 until January 2023, Dr. Morris was chief medical officer for Celyad Oncology, a CAR-T focused cell therapy company. Prior to Celyad, he served as CMO at Radius Health from 2018 to 2020 and held senior leadership positions with PsiOxus Therapeutics from 2016 to September 2018. He also worked as chief development officer at ImmunoGen from 2012 to 2016. Dr. Morris also worked at Allos Therapeutics and Cephalon Inc., where he contributed to all phases of development for several novel programs targeting solid and hematological tumor indications. While at Cephalon, he served as vice president of worldwide clinical research during the approval of TREANDA® (bendamustine) for the treatment of indolent non-Hodgkin lymphoma and chronic lymphocytopenia. Dr. Morris began his career at AstraZeneca where he held roles of increasing responsibility including global medical lead for Faslodex® (fulvestrant) through its approval for breast cancer. He received a Bachelor of Medicine, Bachelor of Surgery and Bachelor of Medical Science in Clinical Pharmacology and Therapeutics degree from Sheffield University Medical School and is a Member of the Royal College of Physicians of London.

Fred Powell has served as our Chief Financial Officer since November 2022. From 2016 to 2022, Mr. Powell served as the executive vice president and chief financial officer of Antares Pharma, which was acquired by Halozyme Therapeutics in May 2022. Prior to that, from 2012 until 2016, Mr. Powell served as Chief Financial Officer at Celator Pharmaceuticals (acquired by Jazz Pharmaceuticals), OraPharma, Inc. from 2011 until 2012 (acquired by Valeant Pharmaceuticals International) and BMP Sunstone Corporation from 2005 until 2011 (acquired by Sanofi-Aventis). Mr. Powell also held various positions of increasing responsibility at KPMG LLP. Mr. Powell is the vice chairman of the Advisory Board for Penn State Scranton. He holds a B.S. in accounting from Pennsylvania State University.

Hans van der Vliet, M.D., Ph.D., has served as our Chief Scientific Officer since 2017. Since December 2019, he has served as a professor of medical oncology at the Amsterdam UMC, where he has also served as a Medical Oncologist since September 2008. From January 2005 to January 2006, Dr. van der Vliet performed post-doctoral research at the Division of Hematology and Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School. He received his MD from the University of Amsterdam and his PhD from the VU University in Amsterdam and performed his internal medicine and medical oncology specialization in the VU University Medical Center in Amsterdam.

B. Compensation

As a foreign private issuer, in accordance with Nasdaq listing rules, we comply with home country compensation disclosure requirements and certain exemptions thereunder rather than complying with Nasdaq compensation disclosure requirements. Dutch law does not provide for limitations with respect to the aggregate annual compensation paid to our directors, provided that such compensation is consistent with our compensation policy.

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Our compensation policy authorizes our Board to determine the amount, level and structure of the compensation packages of our directors at the recommendation of our compensation committee. These compensation packages may consist of a mix of fixed and variable compensation components, including base salary, short-term incentives, long-term incentives, fringe benefits, severance pay and pension arrangements, as determined by our Board.

For so long as we qualify as a foreign private issuer, we are not required to comply with the proxy rules applicable to U.S. domestic companies, including the requirement applicable to emerging growth companies to disclose the compensation of our chief executive officer and other two most highly compensated executive officers on an individual, rather than an aggregate, basis. The aggregate compensation, including benefits in kind, accrued or paid to members of our Board and Senior Management with respect to the year ended December 31, 2022 for services in all capacities was approximately $5.1 million.

The following table sets forth the compensation paid or accrued, including benefits in kind, to members of our Board for the year ended December 31, 2022:

	Total
	compensation
Stephen Hurly	$	560,962
Kapil Dhingra	$	75,000
Karen J. Wilson	$	55,000
James Noble	$	23,750
Jay Backstrom	$	23,500
Peter A. Kiener	$	—
Christy Oliger	$	—
Mary E. Wadlinger	$	—

The following table sets forth the number of options to purchase common shares granted to members of our Board during the year ended December 31, 2022:

f
		Exercise
	Number of Options	Price		Expiration date
Stephen Hurly	800,000	$	3.64	12/21/2032
Jay Backstrom	20,000	$	3.64	12/21/2032
Kapil Dhingra	20,000	$	3.64	12/21/2032
James Noble	20,000	$	3.64	12/21/2032
Karen J. Wilson	20,000	$	3.64	12/21/2032
Peter A. Kiener (1)	—	$	—	—
Christy Oliger (2)	—	$	—	—
Mary E. Wadlinger (1)	—	$	—	—

(1) Dr. Kiener and Ms. Wadlinger were appointed to the Board effective January 1, 2023.

(2) Ms. Oliger was appointed to the Board effective March 9, 2023.

Equity Incentive Plans

In 2018, we established a share option plan (2018 Stock Option Plan) that entitles employees, directors, and consultants providing services to purchase depository receipts for our common shares. Under this plan, holders of vested options are entitled to purchase common shares at the exercise price determined at the date of the grant.

In 2020, we established a U.S. share option plan (2020 U.S. Stock Option Plan) that entitles employees, directors and consultants providing services to give the right to acquire a number of common shares. Under this plan, holders of vested options are entitled to purchase common shares at the exercise price determined at the date of the grant.

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In 2021, we established the 2021 Long-term Incentive Option Plan, as an incentive for all its employees, members of its Board of Directors and select external consultants. As of March 25, 2021, the 2018 Stock Option Plan and the 2020 U.S. Stock Option Plan ceased to have any future shares available.

Under the option plans, the options granted generally have a maximum term of 10 years and can generally have the following vesting schemes:

● 25% of the options vest on the first anniversary of the vesting commencement date, and the remaining 75% of the options vest in 36 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the fourth anniversary of the vesting commencement date.

● the options vest in 48 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the fourth anniversary of the vesting commencement date.

● the options vest in 12 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the first anniversary of the vesting commencement date.

C. Board Practices

Board Structure

In connection with our IPO, we transitioned from a two-tier board structure to a one-tier board structure consisting of executive and non-executive directors. There are no family relationships among any of our directors.

Board of Directors Composition

Our board of directors is composed of eight members, comprised of one executive director, Stephen Hurly, our Chief Executive Officer, and seven non-executive directors. Members of our board serve for staggered three year terms as follows:

● Kapil Dhingra, Stephen Hurly, and Karen Wilson with terms expiring at the annual general meeting of shareholders in 2024;

● Jay Backstrom and James Noble with terms expiring at the annual general meeting of shareholders in 2025; and

● Peter Kiener, Mary Wadlinger and Christy Oliger with terms expiring at the annual general meeting of shareholders in 2026.

As a result of the staggered board, only one class of directors will be elected at each annual general meeting of shareholders, with the other classes continuing for the remainder of their respective terms. Each of our directors will hold office for the term set forth above, except in the case of his or her earlier death, resignation or dismissal. Our directors do not have a retirement age requirement under our articles of association. We do not have any board service agreements with any of the members of our board of directors.

Board Committees

The board of directors has established a standing Audit Committee, Compensation Committee and Nomination and Corporate Governance Committee.

Audit Committee

The Audit Committee consists of Karen J. Wilson, Christy Oliger and James Noble. The Audit Committee assists the board of directors in overseeing our accounting and financial reporting processes and the audits of our financial statements. Ms. Wilson serves as chairperson. During the year ended December 31, 2022, Kapil Dhingra served on the Audit Committee, and was replaced by Christy Oliger upon her appointment in March 2023.

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In addition, the Audit Committee is responsible for the appointment, compensation, retention and oversight of the work of our independent registered public accounting firm. Our board of directors has determined that Ms. Wilson, Ms. Oliger and Mr. Noble satisfy the “independence” requirements set forth in Rule 10A-3 under the Exchange Act, and Ms. Wilson and Mr. Noble qualify as an “audit committee financial expert,” as such term is defined in the rules of the SEC. The audit committee is governed by a charter that complies with applicable Nasdaq rules, which charter is posted on our website.

Compensation Committee

The Compensation Committee consists of Mary Wadlinger, Karen J. Wilson and James Noble. The Compensation Committee assists the board of directors in determining compensation for our executive officers and our directors. Mr. Noble serves as chairperson. During 2022, Guido Magni served as chairperson until his departure on December 31, 2022.

Under SEC and Nasdaq rules, there are heightened independence standards for members of the Compensation Committee, including a prohibition against the receipt of any compensation from us other than standard director fees. While our current Compensation Committee is compliant with Nasdaq Listing Rule 5605(d) and is entirely independent, LAVA is permitted under Nasdaq Listing Rule 5605(d) to opt out of Nasdaq Listing Rule 5605(d) and may elect to rely on the exemption provided under Nasdaq Listing Rule 5605(d) in the future. The Compensation Committee is governed by a charter that is posted on our website.

Nomination and Corporate Governance Committee

The Nomination and Corporate Governance Committee consists of Kapil Dhingra, Jay Backstrom and Christy Oliger. The Nomination and Corporate Governance Committee assists our board of directors in identifying individuals qualified to become our directors consistent with criteria established by us and in developing our code of business conduct and ethics. Mr. Dhingra serves as chairperson. During the year ended December 31, 2022, Stefan Luzi served on the Nomination and Corporate Governance Committee, and was replaced by Christy Oliger upon her appointment in March 2023, at which time Mr. Luzi also stepped down from the board of directors.

While our current Nomination and Corporate Governance Committee is compliant with Nasdaq Listing Rule 5605(e) and is entirely independent, LAVA is permitted by under Nasdaq Listing Rule 5605(e) to opt out of Nasdaq Listing Rule 5605(e)and may elect to rely on the exemption provided under Nasdaq Listing Rule 5605(e) in the future. The Nomination and Corporate Governance Committee is governed by a charter that is posted on our website.

D. Employees

As of December 31, 2022, we had 69 full-time employees. In Europe, 52 of our employees work in research and development and six work in general and administrative areas. In the United States, six of our employees work in research and development and five work in general and administrative areas. None of our employees are subject to a collective bargaining agreement or represented by a trade or labor union. All of our employees are eligible for participation in our 2021 Long-term Incentive Option Plan and are granted equity awards as deemed appropriate by our Board of Directors or Senior Management, typically in the form of stock options.

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E. Share Ownership

For information regarding the share ownership of our Senior Management see “Item 6.B. Compensation” and “Item 7.A. Major Shareholders.” The following table displays the share ownership of our Board of Directors.

	Number of	Percentage of
	Common	Shares	Voting
	Shares	Outstanding	Rights
Kapil Dhingra	30,000	(1)	(2)
Karen J. Wilson	10,000	(1)	(2)
Stephen Hurly	5,000	(1)	(2)
Jay Backstrom	—	(1)	(2)
Peter A. Kiener	—	(1)	(2)
James Noble	—	(1)	(2)
Christy Oliger	—	(1)	(2)
Mary E. Wadlinger	—	(1)	(2)

(1) Represents less than 1% of our shares outstanding.

(2) Each common share carries one vote per share.

The following table sets forth information regarding options to purchase common shares granted to our Board of Directors as of February 28, 2023:

				Percentage of
	Number of	Exercise		Shares		Expiration
	Options	Price		Outstanding		date
Stephen Hurly	232,934	$	2.76	0.9	%	2/11/2030
Stephen Hurly	494,819	$	2.76	1.9	%	12/16/2030
Stephen Hurly	310,000	$	5.10	1.2	%	12/20/2031
Stephen Hurly	800,000	$	3.64	3.0	%	12/21/2032
Jay Backstrom	20,000	$	3.64	0.1	%	12/21/2032
Kapil Dhingra	207,740	$	9.50	0.8	%	3/2/2031
Kapil Dhingra	20,000	$	5.10	0.1	%	12/20/2031
Kapil Dhingra	20,000	$	3.64	0.1	%	12/21/2032
Peter A. Kiener	—	$	—	—	%	—
James Noble	20,000	$	3.64	0.1	%	12/21/2032
Christy Oliger	—	$	—	—	%	—
Mary E. Wadlinger	—	$	—	—	%	—
Karen J. Wilson	24,261	$	15.00	0.1	%	3/24/2031
Karen J. Wilson	20,000	$	5.10	0.1	%	12/20/2031
Karen J. Wilson	20,000	$	3.64	0.1	%	12/21/2032

Item 7: Major Shareholders and Related Party Transactions

A. Major Shareholders

The following table presents information relating to the beneficial ownership of our common shares as of February 28, 2023 by: (i) each person, entity or group of affiliated persons, known by us to own beneficially 5% or more of our outstanding common shares; (ii) each member of our Board and Senior Management; and (iii) our Board and Senior Management as a group. As of June 30, 2022, the measurement date for determining FPI status, less than 50% of our common shares were held by U.S. holders. Four of our 11 shareholders of record are U.S. holders. Five of our 11 shareholders of record are shareholders in the Netherlands, representing approximately 17.4% of our common shares outstanding as of June 30, 2022.

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The number of common shares beneficially owned by each person, entity, or group of affiliated persons is determined in accordance with the rules of the SEC, and the information is not necessarily indicative of beneficial ownership for any other purpose. Under such rules, beneficial ownership includes any common shares over which the person, entity, or group of affiliated persons has sole or shared voting power or investment power as well as any common shares that the person, entity, or group of affiliated persons has the right to acquire within 60 days of February 28, 2023 through the exercise of any option, warrant or other right.

This information in the table relating to 5% or greater shareholders is based upon information from Schedules 13D and 13G filed with the SEC and our Senior Management’s understanding of each person, entity or group of affiliated persons beneficial ownership. The percentage of outstanding common shares is computed on the basis of 26,289,087 common shares outstanding as of February 28, 2023. All major shareholders listed below have the same voting rights. Unless otherwise indicated below, the address for each beneficial owner listed is c/o LAVA Therapeutics, at Yalelaan 62, 3584 CM Utrecht, the Netherlands.

	As of February 28, 2023
	Number of	Percentage
Name of beneficial owner	shares	of class
5% or greater shareholders
Cooperative Gilde Healthcare IV UA (1)	5,421,170	20.6	%
Versant Ventures (2)	4,587,837	17.5	%
Novo Holdings A/S (3)	3,327,312	12.7	%
Redmile Group, LLC (4)	2,774,409	10.6	%
Sanofi Foreign Participations B.V. (5)	1,919,455	7.3	%
Board and Senior Management
Stephen Hurly (6)	647,675	2.4	%
Kapil Dhingra (7)	164,708	*
Hans van der Vliet (8)	164,588	*
Ton Adang (9)	127,305	*
Amy Garabedian (10)	67,499	*
Fred Powell	50,000	*
Karen J. Wilson (11)	46,174	*
Jay Backstrom	—	*
Peter A. Kiener	—	*
Charles Morris	—	*
James Noble	—	*
Christy Oliger	—	*
Mary E. Wadlinger	—	*
All board members and senior management as a group (13 persons) (12)	1,267,949	6.3	%

* Represents less than 1% of our shares outstanding.

(1) This information has been obtained from a Schedule 13D filed on March 31, 2021 by entities and individuals associated with Cooperative Gilde Healthcare IV U.A. (“Gilde Healthcare”). All shares are held of record by Gilde Healthcare, Gilde Healthcare IV Management B.V. is the manager of Gilde Healthcare and may be deemed to have voting, investment and dispositive power with respect to these securities. Gilde Healthcare IV Management B.V. is fully owned by Gilde Healthcare Holding B.V. The managing partners of Gilde Healthcare Holding B.V. are Edwin de Graaf, Marc Olivier Perret and Martemanshurk B.V. The address for Gilde is Newtonlaan 91, 3584 BP Utrecht, the Netherlands.

(2) This information has been obtained from a Schedule 13D filed on April 8, 2021 by entities associated with Versant Venture Capital VI, L.P. (“Versant VI”), Versant Ventures VI GP, L.P. (“GP VI”), Versant Ventures VI GP-GP, LLC (“LLC VI”), Versant Vantage I, L.P. (“Vantage LP”), Versant Vantage I GP, L.P. (“Vantage GP”) and Versant Vantage I GP-GP, LLC (“Vantage LLC” and, with Versant VI, GP VI, LLC VI, Vantage LP and Vantage GP, collectively, the “Reporting Persons”). LLC VI is the general partner of GP VI, which is the general partner of Versant VI. Each of LLC VI and GP VI share voting and dispositive power over the shares held by Versant VI. Vantage LLC is the general partner of Vantage GP, which is the general partner of Vantage LP. Each of Vantage LLC and Vantage GP share voting and dispositive power over the shares held by Vantage LP. These shares are

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held by Versant VI. LLC VI is the general partner of GP VI, which is the general partner of Versant VI. Each of LLC VI and GP VI share voting and dispositive power over the shares held by Versant VI and as a result may be deemed to have beneficial ownership over such securities. The address for the Reporting Persons is One Sansome Street, Suite 3630, San Francisco, CA 94104.

(3) This information has been obtained from a Schedule 13D.A filed on October 3, 2022 by entities associated with Novo Holdings A/S. Novo Holdings A/S is a Danish limited liability company that is wholly owned by Novo Nordisk Foundation (the “Foundation”), a Danish commercial foundation. Novo Holdings A/S is the holding company in the group of Novo companies (currently comprised of Novo Nordisk A/S and Novozymes A/S) and is responsible for managing the Foundation’s assets, including its financial assets. Based on the governance structure of Novo Holdings A/S and the Foundation, the Foundation is not deemed to have any beneficial ownership of the securities held by Novo Holdings A/S. The address for Novo is Tuborg Havnevej 19, DK-2900 Hellerup, Denmark.

(4) This information has been obtained from a Schedule 13G/A filed on February 14, 2022 by entities and individuals associated with Redmile Group, LLC. Redmile Group LLC’s beneficial ownership is comprised of shares owned by certain private investment vehicles managed by Redmile Group, LLC, including Redmile Biopharma Investments II, L.P., which shares may be deemed beneficially owned by Redmile Group, LLC as investment manager of such private investment vehicles. The shares may also be deemed beneficially owned by Jeremy C. Green as the principal of Redmile Group, LLC. Redmile Group, LLC and Mr. Green each disclaim beneficial ownership of these shares, except to the extent of its or his pecuniary interest in such shares, if any. The address for each of the above person and entities is One Letterman Drive, Building D, Suite D3-300, San Francisco, California 94129.

(5) This information has been obtained from a Schedule 13G filed on March 31, 2021 by Sanofi. The shares are held of record by Sanofi Foreign Participations B.V., a wholly owned subsidiary of Sanofi. Sanofi has the ability to exercise voting and dispositive power over the shares held by Sanofi Foreign Participations B.V. The address for Sanofi Foreign Participations B.V. is Paasheuvelweg 25, 1105BP Amsterdam, the Netherlands.

(6) Consists of 5,000 common shares and 642,675 common shares underlying options exercisable within 60 days of February 28, 2023.

(7) Consists of 30,000 common shares and 134,708 common shares underlying options exercisable within 60 days of February 28, 2023.

(8) Consists of 77,350 common shares and 87,238 common shares underlying options exercisable within 60 days of February 28, 2023.

(9) Consists of 800 common shares and 126,505 common shares underlying options exercisable within 60 days of February 28, 2023.

(10) Consists of 67,499 common shares underlying options exercisable within 60 days of February 28, 2023.

(11) Consists of 10,000 common shares and 36,174 common shares underlying options exercisable within 60 days of February 28, 2023.

(12) Consists of 173,150 common shares and 1,094,799 common shares underlying options exercisable within 60 days of February 28, 2023.

B. Related Party Transactions

Under our related party transaction policy, related person transactions (as defined by the policy) must be reviewed by, and are subject to the approval or ratification of, our board of directors or a designated committee thereof consisting solely of independent directors, including the audit committee. Our articles of association require us to indemnify our current and former directors to the fullest extent permitted by law, subject to certain exceptions, and we have entered into indemnification agreements with all of our directors.

Each of our executive officers has entered into an employment agreement with us for an indefinite period. The employment agreements generally provide for base salary, sign-on bonuses, discretionary annual bonuses based on a percentage of base salary and eligibility to receive equity awards and to participate in the Company’s benefits plans.

Please refer to Item 6: Directors, Senior Management and Employees for additional information on our board of directors and senior management. We did not have any material related party transactions during 2022.

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C. Interests of Experts and Counsel

Not required for Annual Reports.

Item 8: Financial Information

A. Consolidated Financial Statements and Other Financial Information

Financial Statements

Our financial statements, accompanying notes and Report of Independent Registered Public Accounting Firm are included in Item 18 of this annual report on Form 20-F, which are incorporated in this Item 8 by reference.

Dividend Distribution Policy

We have never paid or declared any cash dividends on our common shares, and we do not anticipate paying any cash dividends on our common shares in the foreseeable future. We intend to retain all available funds and any future earnings to fund the development and expansion of our business. Under Dutch law, a Dutch public company with limited liability (naamloze vennootschap) may only pay dividends if the shareholders’ equity (eigen vermogen) exceeds the sum of the paid-up and called-up share capital plus the reserves required to be maintained by Dutch law or our articles of association. Subject to such restrictions, any future determination to pay dividends will be at the discretion of our general meeting upon the proposal of our board of directors. Any future approval will depend upon the board’s review of several factors, including our results of operations, financial condition, future prospects, contractual restrictions, restrictions imposed by applicable law and other factors our board deems relevant.

B. Significant Changes

None.

Item 9: The Offer and Listing

A. Offer and listing details

Our common shares have traded on The NASDAQ Global Select Market under the symbol “LVTX” since March 26, 2021. Prior to that date, there was no public trading market for our common shares.

B. Plan of distribution

Not applicable.

C. Markets

Our common shares have traded on The NASDAQ Global Select Market under the symbol “LVTX” since March 26, 2021.

D. Selling shareholders

Not applicable.

E. Dilution

Not applicable.

F. Expenses of the issue

Not applicable.

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Item 10: Additional Information

A. Share capital

Not applicable.

B. Memorandum and articles of association

The information in response to this item is contained under the caption "Description of share capital and articles of association" and "Comparison of Dutch corporate law and our articles of association and U.S. corporate law" in our Form F-1 Registration Statement (registration number: 333-253795) filed with the SEC on March 23, 2021 and is incorporated herein by reference.

C. Material contracts

Except as otherwise disclosed in this Annual Report (including the exhibits thereto), we are not currently, and have not been in the last two years, party to any material contract, other than contracts entered into in the ordinary course of business. “See Item 4. Information on the Company—License Agreements” for summaries of our material license agreements, which are incorporated into this Item by reference.

D. Exchange controls

Under Dutch law, there are no exchange controls applicable to the transfer to persons outside of the Netherlands of dividends or other distributions with respect to, or of the proceeds from the sale of, shares of a Dutch company, subject to applicable restrictions under sanctions and measures, including those concerning export control, pursuant to European Union regulations, the Sanctions Act 1977 (Sanctiewet 1977) or other legislation, applicable anti-boycott regulations, applicable anti-money-laundering regulations and similar rules and provided that, under certain circumstances, payments of such dividends or other distributions must be reported to the Dutch Central Bank at its request for statistical purposes.

E. Taxation

The following summary contains a description of material Dutch and U.S. federal income tax considerations of the acquisition, ownership and disposition of our common shares. This summary should not be considered a comprehensive description of all the tax considerations that may be relevant to the decision to acquire our common shares.

Material U.S. federal income tax considerations for U.S. Holders

The following is a description of the material U.S. federal income tax considerations to the U.S. Holders described below of owning and disposing of our common shares. It is not a comprehensive description of all tax considerations that may be relevant to a particular person’s decision to acquire securities. This discussion applies only to a U.S. Holder that holds our common shares as a capital asset within the meaning of Section 1221 of the Internal Revenue Code of 1986, as amended, or the Code, for tax purposes (generally, property held for investment). In addition, it does not describe all of the tax considerations that may be relevant in light of a U.S. Holder’s particular circumstances, including state and local tax considerations, estate or gift tax considerations, or the application of the alternative minimum tax considerations, the Medicare contribution tax on net investment income, or the special tax accounting rules under Section 451(b) of the Code, and tax considerations applicable to U.S. Holders subject to special rules, such as:

● banks, insurance companies, and certain other financial institutions;

● U.S. expatriates and certain former citizens or long-term residents of the United States;

● dealers or traders in securities who use a mark-to-market method of tax accounting;

● persons holding common shares as part of a hedging transaction, “straddle,” wash sale, conversion transaction or integrated transaction or persons entering into a constructive sale with respect to common shares;

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● persons whose “functional currency” for U.S. federal income tax purposes is not USD;

● brokers, dealers or traders in securities, commodities or currencies;

● tax-exempt entities or government organizations;

● S corporations, partnerships, or other entities or arrangements classified as partnerships or pass-throughs for U.S. federal income tax purposes (and investors therein);

● regulated investment companies or real estate investment trusts;

● persons who acquired our common shares pursuant to the exercise of any employee stock option or otherwise as compensation;

● persons that own or are deemed to own (including by attribution) ten percent or more of our shares (by vote or value); and

● persons holding our common shares in connection with a trade or business, permanent establishment, or fixed base outside the United States.

If an entity or arrangement that is classified as a partnership for U.S. federal income tax purposes holds common shares, the U.S. federal income tax treatment of a partner will generally depend on the status of the partner and the activities of the partnership. Partnerships holding common shares and partners in such partnerships are encouraged to consult their tax advisors as to the U.S. federal income tax consequences of holding and disposing of common shares.

The discussion is based on the Code, administrative pronouncements, judicial decisions, final, temporary and proposed Treasury Regulations, and the income tax treaty between the Netherlands and the United States, or the Treaty, all as of the date hereof, changes to any of which may affect the tax considerations described herein—possibly with retroactive effect.

A “U.S. Holder” is a holder who, for U.S. federal income tax purposes, is a beneficial owner of common shares who is eligible for the benefits of the Treaty and is:

(1) an individual who is a citizen or resident of the United States;

(2) a corporation, or other entity taxable as a corporation, created or organized in or under the laws of the United States, any state therein, or the District of Columbia;

(3) an estate, the income of which is subject to U.S. federal income taxation regardless of its source; or

(4) a trust if (a) a U.S. court is able to exercise primary supervision over the administration of the trust and one or more U.S. persons have authority to control all substantial decisions of the trust or (b) the trust has a valid election to be treated as a U.S. person under applicable U.S. Treasury Regulations.

U.S. Holders are encouraged to consult their tax advisors concerning the U.S. federal, state, local and non-U.S. tax consequences of owning and disposing of our common shares in their particular circumstances.

Passive foreign investment company

A non-U.S. corporation will be classified as a PFIC for any taxable year in which, after applying certain look-through rules, either:

● at least 75% of its gross income is passive income (such as interest income); or

● at least 50% of its gross assets (determined on the basis of a quarterly average) is attributable to assets that produce passive income or are held for the production of passive income.

For this purpose, cash is generally a passive asset and passive income generally includes dividends, interest, royalties and rents (other than royalties and rents derived in the active conduct of a trade or business and not derived from a related person). For purposes of this test, we will be treated as owning our proportionate share of the assets and earning our proportionate share of the income of any other corporation, the equity of which we own, directly or indirectly, 25% or more (by value).

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Based on the estimated composition of our income, assets and operations, we do not believe that we were classified as a PFIC for U.S. federal income tax purposes for the taxable year ended December 31, 2022. The determination of whether we are a PFIC is a fact-intensive determination made on an annual basis and the applicable law is subject to varying interpretation. In particular, the characterization of our assets as active or passive may depend in part on our current and intended future business plans, which are subject to change. In addition, for our current and future taxable years, the total value of our assets for PFIC testing purposes may be determined in part by reference to the market price of our common shares from time to time, which may fluctuate considerably. Under the income test, our status as a PFIC depends on the composition of our income which will depend on a variety of factors that are subject to uncertainty, including the characterization of certain intercompany payments and payments from tax authorities, transactions we enter into and our corporate structure. There can be no assurance that the IRS would not successfully challenge our position. Accordingly, our U.S. counsel expresses no opinion with respect to our PFIC status for any prior, current or future taxable year.

If we are classified as a PFIC in any year with respect to which a U.S. Holder owns the common shares, we will continue to be treated as a PFIC with respect to such U.S. Holder in all succeeding years during which the U.S. Holder owns the common shares, regardless of whether we continue to meet the tests described above unless (1) we cease to be a PFIC and the U.S. Holder has made a “deemed sale” election under the PFIC rules, or (2) the U.S. Holder (A) makes a “QEF Election” (defined below) or (B) is eligible to make and makes a mark-to-market election (as described below), with respect to all taxable years during such U.S. Holder’s holding period in which we are a PFIC. If such a deemed sale election is made, a U.S. Holder will be deemed to have sold the common shares the U.S. Holder holds at their fair market value as of the date of such deemed sale and any gain from such deemed sale would be subject to the rules described below. After the deemed sale election, so long as we do not become a PFIC in a subsequent taxable year, the U.S. Holder’s common shares with respect to which such election was made will not be treated as shares in a PFIC and the U.S. Holder will not be subject to the rules described below with respect to any “excess distribution” the U.S. Holder receives from us or any gain from an actual sale or other disposition of the common shares. U.S. Holders should consult their tax advisors as to the possibility and consequences of making a deemed sale election if we cease to be a PFIC and such election becomes available.

For each taxable year we are treated as a PFIC with respect to a U.S. Holder, the U.S. Holder will be subject to special tax rules with respect to any “excess distribution” such U.S. Holder receives and any gain such U.S. Holder recognizes from a sale or other disposition (including a pledge) of common shares, unless (1) such U.S. Holder makes a “qualified electing fund” election, or QEF Election, with respect to all taxable years during such U.S. Holder’s holding period in which we are a PFIC, or (2) our common shares constitute “marketable stock” and such U.S. Holder makes a mark-to-market election (as discussed below). Distributions a U.S. Holder receives in a taxable year that are greater than 125% of the average annual distributions a U.S. Holder received during the shorter of the three preceding taxable years or the U.S. Holder’s holding period for the common shares will be treated as an excess distribution. Under these special tax rules:

● the excess distribution or gain will be allocated ratably over a U.S. Holder’s holding period for the common shares;

● the amount allocated to the current taxable year, and any taxable year prior to the first taxable year in which we became a PFIC, will be treated as ordinary income; and

● the amount allocated to each other year will be subject to the highest tax rate in effect for that year and the interest charge generally applicable to underpayments of tax will be imposed on the resulting tax attributable to each such year.

The tax liability for amounts allocated to years prior to the year of disposition or “excess distribution” cannot be offset by any net operating losses for such years, and gains (but not losses) realized on the sale of the common shares cannot be treated as capital gains, even if a U.S. Holder holds the common shares as capital assets.

If we are a PFIC, a U.S. Holder will generally be subject to similar rules with respect to distributions we receive from, and our dispositions of the stock of, any of our direct or indirect subsidiaries that also are PFICs,

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as if such distributions were indirectly received by, and/or dispositions were indirectly carried out by, such U.S. Holder. U.S. Holders should consult their tax advisors regarding the application of the PFIC rules to our subsidiaries.

If a U.S. Holder makes an effective QEF Election, the U.S. Holder will be required to include in gross income each year, whether or not we make distributions, as capital gains, such U.S. Holder’s pro rata share of our net capital gains and, as ordinary income, such U.S. Holder’s pro rata share of our earnings in excess of our net capital gains. However, a U.S. Holder can only make a QEF Election with respect to common shares in a PFIC if such company agrees to furnish such U.S. Holder with certain tax information annually. We do not currently expect to provide such information if we are classified as a PFIC.

U.S. Holders can avoid the interest charge on excess distributions or gain relating to our common shares by making a mark-to-market election with respect to the common shares, provided that the common shares are “marketable stock.” Common shares will be marketable stock if they are “regularly traded” on certain U.S. stock exchanges or on a non-U.S. stock exchange that meets certain conditions. For these purposes, the common shares will be considered regularly traded during any calendar year during which they are traded, other than in de minimis quantities, on at least 15 days during each calendar quarter. Any trades that have as their principal purpose meeting this requirement will be disregarded. Each U.S. Holder should consult its tax advisor as to the whether a mark-to-market election is available or advisable with respect to the common shares.

A U.S. Holder that makes a mark-to-market election must include in ordinary income for each year an amount equal to the excess, if any, of the fair market value of our common shares at the close of the taxable year over the U.S. Holder’s adjusted tax basis in the common shares. An electing holder may also claim an ordinary loss deduction for the excess, if any, of the U.S. Holder’s adjusted basis in the common shares over the fair market value of the common shares at the close of the taxable year, but this deduction is allowable only to the extent of any net mark-to-market gains for prior years. Gains from an actual sale or other disposition of the common shares will be treated as ordinary income, and any losses incurred on a sale or other disposition of the shares will be treated as an ordinary loss to the extent of any net mark-to-market gains for prior years. Once made, the election cannot be revoked without the consent of the IRS unless the common shares cease to be marketable stock.

However, a mark-to-market election generally cannot be made for equity interests in any lower-tier PFICs that we own, unless shares of such lower- tier PFIC are themselves “marketable stock.” As a result, even if a U.S. Holder validly makes a mark-to-market election with respect to our common shares, the U.S. Holder may continue to be subject to the PFIC rules (described above) with respect to its indirect interest in any of our investments that are treated as an equity interest in a PFIC for U.S. federal income tax purposes. U.S. Holders should consult their tax advisors as to the availability and desirability of a mark-to-market election, as well as the impact of such election on interests in any lower-tier PFICs.

Unless otherwise provided by the U.S. Treasury, each U.S. shareholder of a PFIC is required to file an annual report containing such information as the U.S. Treasury may require. A U.S. Holder’s failure to file the annual report will cause the statute of limitations for such U.S. Holder’s U.S. federal income tax return to remain open with regard to the items required to be included in such report until three years after the U.S. Holder files the annual report, and, unless such failure is due to reasonable cause and not willful neglect, the statute of limitations for the U.S. Holder’s entire U.S. federal income tax return will remain open during such period. U.S. Holders should consult their tax advisors regarding the requirements of filing such information returns under these rules.

WE STRONGLY URGE A U.S. HOLDER TO CONSULT YOUR TAX ADVISOR REGARDING THE IMPACT OF OUR PFIC STATUS ON THE U.S. HOLDER’S INVESTMENT IN THE COMMON SHARES AS WELL AS THE APPLICATION OF THE PFIC RULES TO INVESTMENT IN THE COMMON SHARES.

Taxation of distributions

Subject to the discussion above under “Passive Foreign Investment Company,” distributions paid on common shares, other than certain distributions of common shares, will generally be treated as dividends to the extent paid out of our current or accumulated earnings and profits (as determined under U.S. federal income tax

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principles). Because we may not calculate our earnings and profits under U.S. federal income tax principles, we expect that distributions generally will be reported to U.S. Holders as dividends. Non corporate U.S. holders may qualify for the preferential rates of taxation applicable to long term capital gains (i.e., gains from the sale of capital assets held for more than one year) with respect to dividends on ADSs if we are a “qualified foreign corporation.” A non-United States corporation (other than a corporation that is classified as a PFIC for the taxable year in which the dividend is paid or the preceding taxable year) generally will be considered to be a qualified foreign corporation (a) if it is eligible for the benefits of a comprehensive tax treaty with the United States which the Secretary of Treasury of the United States determines is satisfactory for purposes of these rules and which includes an exchange of information provision (which includes the Treaty), or (b) with respect to any dividend it pays on ADSs which are readily tradable on an established securities market in the United States. Therefore, subject to the discussion under “Passive Foreign Investment Company,” above, if the Treaty is applicable, or if the ADSs are readily tradable on an established securities market in the United States, such dividends will generally be “qualified dividend income” in the hands of non-corporate U.S. holders eligible for the preferential tax rates, provided that certain conditions are met, including conditions relating to holding period and the absence of certain risk reduction transactions. The amount of the dividend will be treated as foreign-source dividend income to U.S. Holders and will not be eligible for the dividends-received deduction generally available to U.S. corporations under the Code. Dividends will generally be included in a U.S. Holder’s income on the date of the U.S. Holder’s receipt of the dividend. The amount of any dividend income paid in foreign currency will be the USD amount calculated by reference to the exchange rate in effect on the date of actual or constructive receipt, regardless of whether the payment is in fact converted into USD. If the dividend is converted into USD on the date of receipt, a U.S. Holder should not be required to recognize foreign currency gain or loss in respect of the dividend income. A U.S. Holder may have foreign currency gain or loss if the dividend is converted into USD after the date of receipt. Such gain or loss would generally be treated as U.S.-source ordinary income or loss. The amount of any distribution of property other than cash (and other than certain pro rata distributions of common shares or rights to acquire common shares) will be the fair market value of such property on the date of distribution. For foreign tax credit purposes, our dividends will generally be treated as passive category income. The rules relating to the determination of the U.S. foreign tax credit are complex, and U.S. Holders should consult their tax advisors regarding the availability of a foreign tax credit in their particular circumstances and the possibility of claiming a deduction (in lieu of the foreign tax credit) for any foreign taxes paid or withheld.

Sale or other taxable disposition of common shares

Subject to the discussion above under “Passive Foreign Investment Company,” gain or loss realized on the sale or other taxable disposition of common shares will be capital gain or loss and will be long-term capital gain or loss if the U.S. Holder held the common shares for more than one year. The amount of the gain or loss will equal the difference between the U.S. Holder’s tax basis in the common shares disposed of and the amount realized on the disposition, in each case as determined in USD. This gain or loss will generally be U.S.-source gain or loss for foreign tax credit purposes. The deductibility of capital losses is subject to limitations.

If the consideration received by a U.S. Holder is not paid in USD, the amount realized will be the USD value of the payment received determined by reference to the spot rate of exchange on the date of the sale or other disposition. However, if the common shares are treated as traded on an “established securities market” and you are either a cash-basis taxpayer or an accrual-basis taxpayer that has made a special election (which must be applied consistently from year to year and cannot be changed without the consent of the IRS), you will determine the USD value of the amount realized in a non-USD currency by translating the amount received at the spot rate of exchange on the settlement date of the sale. If you are an accrual basis taxpayer that is not eligible to or does not elect to determine the amount realized using the spot rate on the settlement date, you will recognize foreign currency gain or loss to the extent of any difference between the USD amount realized on the date of sale or disposition and the USD value of the currency received at the spot rate on the settlement date. U.S. Holders should consult their tax advisors regarding the tax consequences if foreign taxes are imposed on a taxable disposition of common shares and their ability to credit such foreign tax against their U.S. federal income tax liability.

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Information reporting and backup withholding

Payments of dividends and sales proceeds that are made within the United States or through certain U.S.-related financial intermediaries generally are subject to information reporting, and may be subject to backup withholding, unless (i) the U.S. Holder is a corporation or other exempt recipient or (ii) in the case of backup withholding, the U.S. Holder provides a correct taxpayer identification number and certifies that it is not subject to backup withholding.

Backup withholding is not an additional tax. The amount of any backup withholding from a payment to a U.S. Holder will be allowed as a credit against the holder’s U.S. federal income tax liability and may entitle it to a refund, provided that the required information is timely furnished to the IRS.

Information with respect to foreign financial assets

Certain U.S. Holders who are individuals (and, under proposed regulations, certain entities) may be required to report information relating to the common shares, subject to certain exceptions (including an exception for common shares held in accounts maintained by certain U.S. financial institutions). Such U.S. Holders who fail to timely furnish the required information may be subject to a penalty. Additionally, if a U.S. Holder does not file the required information, the statute of limitations with respect to tax returns of the U.S. Holder to which the information relates may not close until three years after such information is filed. U.S. Holders should consult their tax advisors regarding their reporting obligations with respect to their ownership and disposition of the common shares.

Material Dutch tax considerations

Scope of discussion

The following is a general summary of certain material Dutch tax consequences of the acquisition, holding and disposal of the common shares. This summary does not purport to describe all possible tax considerations or consequences that may be relevant to a holder or prospective holder of our common shares and does not purport to deal with the tax consequences applicable to all categories of investors, some of which (such as trusts or similar arrangements) may be subject to special rules. In view of its general nature, this general summary should be treated with corresponding caution.

This summary is based on the tax laws of the Netherlands, published regulations thereunder and published authoritative case law, all as in effect on the date hereof, and all of which are subject to change, possibly with retroactive effect. Where the summary refers to “the Netherlands” or “Dutch” it refers only to the part of the Kingdom of the Netherlands located in Europe.

This discussion is for general information purposes only and is not Dutch tax advice or a complete description of all Dutch tax consequences relating to the acquisition, holding and disposal of the common shares. Holders or prospective holders of our common shares should consult their own tax advisors regarding the Dutch tax consequences relating to the acquisition, holding and disposal of the common shares in light of their particular circumstances.

Please note that this summary does not describe the Dutch tax consequences for:

(i) a holder of common shares if such holder has a substantial interest (aanmerkelijk belang) or deemed substantial interest (fictief aanmerkelijk belang) in us under the Dutch Income Tax Act 2001 (Wet inkomstenbelasting 2001). Generally, a holder of securities in a company is considered to hold a substantial interest in such company, if such holder alone or, in the case of an individual, together with such holder’s partner for Dutch income tax purposes, or any relatives by blood or marriage in the direct line (including foster children), directly or indirectly, holds (i) an interest of 5% or more of the total issued and outstanding capital of that company or of 5% or more of the issued and outstanding capital of a certain class of shares of that company; or (ii) rights to acquire, directly or indirectly, such interest; or (iii) certain profit sharing rights in that company that relate to 5% or more of the company’s annual profits or to 5% or more of the company’s liquidation proceeds. A deemed substantial interest may arise if a substantial interest (or part thereof) in a company has been disposed of, or is deemed to have been disposed of, on a non-recognition basis;

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(ii)a holder of common shares, if the common shares held by such holder qualify or qualified as a participation (deelneming) for purposes of the Dutch Corporate Income Tax Act 1969 (Wet op de vennootschapsbelasting 1969). Generally, a holder’s shareholding of 5% or more in a company’s nominal paid-up share capital qualifies as a participation. A holder may also have a participation if (a) such holder does not have a shareholding of 5% or more but a related entity (statutorily defined term) has a participation or (b) the company in which the shares are held is a related entity (statutorily defined term);

(iii)pension funds, investment institutions (fiscale beleggingsinstellingen) and tax exempt investment institutions (vrijgestelde beleggingsinstellingen) (each as defined in the Dutch Corporate Income Tax Act 1969) and other entities that are, in whole or in part, not subject to or exempt from Dutch corporate income tax as well as entities that are exempt from corporate income tax in their country of residence, such country of residence being another state of the European Union, Norway, Liechtenstein, Iceland or any other state with which the Netherlands has agreed to exchange information in line with international standards; and

(iv)a holder of common shares if such holder is an individual for whom the common shares or any benefit derived from the common shares is a remuneration or deemed to be a remuneration for (employment) activities performed by such holder or certain individuals related to such holder (as defined in the Dutch Income Tax Act 2001).

Dividend withholding tax

Dividends distributed by us generally are subject to Dutch dividend withholding tax at a rate of 15%. Generally, we are responsible for the withholding of such dividend withholding tax at source; the Dutch dividend withholding tax is for the account of the holder of common shares.

The expression “dividends distributed” includes, among other things:

● distributions in cash or in kind, deemed and constructive distributions and repayments of paid-in capital not recognized for Dutch dividend withholding tax purposes;

● liquidation proceeds, proceeds from the redemption of common shares, or proceeds from the repurchase of common shares by us or one of our subsidiaries or other affiliated entities, other than as a temporary portfolio investment (tijdelijke belegging), in each case to the extent such proceeds exceed the average paid-in capital of those common shares as recognized for Dutch dividend withholding tax purposes;

● an amount equal to the par value of common shares issued or an increase of the par value of common shares, to the extent that it does not appear that a contribution, recognized for Dutch dividend withholding tax purposes, has been made or will be made; and

● partial repayment of the paid-in capital, recognized for Dutch dividend withholding tax purposes, if and to the extent that we have net profits (zuivere winst), unless (i) the general meeting has resolved in advance to make such repayment and (ii) the par value of the common shares concerned has been reduced by an equal amount by way of an amendment of our articles of association. The term “net profits” includes anticipated profits that have yet to be realized.

Individuals and corporate legal entities who are resident or deemed to be resident of the Netherlands for Dutch income tax purposes, generally are entitled to an exemption of or a credit for any Dutch dividend withholding tax against their Dutch (corporate) income tax liability. The same generally applies to holders of common shares that are neither resident nor deemed to be resident of the Netherlands if the common shares are attributable to a Dutch permanent establishment of such non-resident holder.

A holder of common shares resident of a country other than the Netherlands may, depending on such holder’s specific circumstances, be entitled to exemptions from, reduction of, or full or partial refund of, Dutch dividend withholding tax under Dutch national tax legislation, EU law, or treaties for the avoidance of double taxation in effect between the Netherlands and such other country.

Remittance to the Dutch tax authorities

Under certain circumstances, we may not be required to remit all amounts withheld as Dutch dividend withholding tax to the Dutch tax authorities. If we have received a profit distribution from a qualifying foreign

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subsidiary (as described in the Dutch Dividend Withholding Tax Act 1965; Wet op de dividendbelasting 1965) which distribution (i) is exempt from Dutch corporate income tax and (ii) has been subject to a foreign withholding tax of at least 5%. The amount that does not have to be remitted to the Dutch tax authorities can generally not exceed the lesser of:

● 3% of the dividends distributed by us subject to Dutch dividend withholding tax; and

● 3% of the dividends and profit distributions, before deduction of foreign withholding taxes, received by us from qualifying foreign subsidiaries in the calendar year in which we distributed the dividends (up to the date of the distribution by us) and the two preceding calendar years, as far as such dividends and profit distributions have not yet been taken into account for purposes of establishing the above-mentioned reduction.

Although this reduction reduces the amount of Dutch dividend withholding tax that we are required to remit to the Dutch tax authorities, it does not reduce the amount of Dutch dividend withholding tax that we are required to withhold on dividends distributed by us.

Dividend stripping

Pursuant to legislation to counteract “dividend stripping”, a reduction, exemption, credit or refund of Dutch dividend withholding tax is denied if the recipient of the dividend is not the beneficial owner as described in the Dutch Dividend Withholding Tax Act 1965. This legislation generally targets situations in which a shareholder retains its economic interest in shares but reduces the withholding tax costs on dividends by a transaction with another party. It is not required for these rules to apply that the recipient of the dividends is aware that a dividend stripping transaction took place. The Dutch State Secretary of Finance takes the position that the definition of beneficial ownership introduced by this legislation will also be applied in the context of a double taxation convention.

Conditional withholding tax on dividends (as of January 1, 2024)

As of January 1, 2024, a Dutch conditional withholding tax will be imposed on dividends distributed by us to entities related (gelieerd) to us (within the meaning of the Dutch Withholding Tax Act 2021; Wet bronbelasting 2021), if such related entity:

(i) is considered to be resident (gevestigd) in a jurisdiction that is listed in the yearly updated Dutch Regulation on low-taxing states and non-cooperative jurisdictions for tax purposes (Regeling laagbelastende staten en niet-coöperatieve rechtsgebieden voor belastingdoeleinden) (a "Listed Jurisdiction"); or

(ii) has a permanent establishment located in a Listed Jurisdiction to which the Shares are attributable; or

(iii) holds the Shares for the main purpose or one of the main purposes to avoid taxation for another person or entity and there is an artificial arrangement or transaction or a series of artificial arrangements or transactions; or

(iv) is not considered to be the beneficial owner of the Shares in its jurisdiction of residence because such jurisdiction treats another entity as the beneficial owner of the Shares (a hybrid mismatch); or

(v) is not resident in any jurisdiction (also a hybrid mismatch); or

(vi) is a reverse hybrid (within the meaning of Article 2(12) of the Dutch Corporate Income Tax Act 1969), if and to the extent (x) there is a participant in the reverse hybrid which is related (gelieerd) to the reverse hybrid, (y) the jurisdiction of residence of such participant treats the reverse hybrid as transparent for tax purposes and (z) such participant would have been subject to the Dutch conditional withholding tax in respect of dividends distributed by the Company without the interposition of the reverse hybrid, all within the meaning of the Dutch Withholding Tax Act 2021.

The Dutch conditional withholding tax on dividends will be imposed at the highest Dutch corporate income tax rate in effect at the time of the distribution (currently 25.8%). The Dutch conditional withholding tax on dividends will be reduced, but not below zero, by any regular Dutch dividend withholding tax withheld in

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respect of the same dividend distribution. As such, based on the currently applicable rates, the overall effective tax rate of withholding the regular Dutch dividend withholding tax (as described above) and the Dutch conditional withholding tax on dividends will not exceed the highest corporate income tax rate in effect at the time of the distribution (currently 25.8%).

Taxes on income and capital gains

Dutch resident entities

Generally, if the holder of common shares is an entity a resident or deemed to be resident of the Netherlands for Dutch corporate income tax purposes (a “Dutch Resident Entity”), any income derived or deemed to be derived from the common shares or any capital gains realized on the disposal or deemed disposal of the common shares is subject to Dutch corporate income tax at a rate of 15% with respect to taxable profits up to €395,000 and 25.8% with respect to taxable profits in excess of that amount (rates and brackets for 2022).

Dutch resident individuals

If the holder of common shares is an individual resident or deemed to be resident of the Netherlands for Dutch income tax purposes (a “Dutch Resident Individual”), any income derived or deemed to be derived from the common shares or any capital gains realized on the disposal or deemed disposal of the common shares is subject to Dutch income tax at progressive rates (with a maximum of 49.5% in 2022), if:

(i)the common shares are attributable to an enterprise from which the holder of common shares derives a share of the profit, whether as an entrepreneur (ondernemer) or as a person who has a co-entitlement to the net worth (medegerechtigd tot het vermogen) of such enterprise without being a shareholder (as defined in the Dutch Income Tax Act 2001); or

(ii)the holder of common shares is considered to perform activities with respect to the common shares that go beyond ordinary asset management (normaal, actief vermogensbeheer) or otherwise derives benefits from the common shares that are taxable as benefits from miscellaneous activities (resultaat uit overige werkzaamheden).

If the above-mentioned conditions (i) and (ii) do not apply to the Dutch Resident Individual, the Dutch Resident Individual's, net investment assets (rendementsgrondslag) for the year will be subject to an annual Dutch income tax on a deemed return (with a maximum of 5.53% in 2022) under the regime for savings and investments (inkomen uit sparen en beleggen), insofar the individual’s net investment assets for the year exceed a statutory threshold (heffingvrij vermogen). The net investment assets for the year are the fair market value of the investment assets less the allowable liabilities on January 1 of the relevant calendar year. The common shares are included as investment assets. For the net investment assets on January 1, 2022, the deemed return ranges from 1.82% up to 5.53% (depending on the aggregate amount of the net investment assets of the Dutch Resident Individual on January 1, 2022). The deemed return will be adjusted annually on the basis of historic market yields.

The deemed return on the Dutch Resident Individual's net investment assets for the year is taxed at a flat rate of 31% (rate for 2022). Actual income or capital gains realized in respect of the Shares are as such not subject to Dutch income tax.

On 24 December 2021, the Dutch Supreme Court ruled that the Dutch income tax levy on savings and investments, in 2017 and 2018, violated the European Convention on Human Rights. The tax consequences of the Dutch Supreme Court are not immediately clear. The new Dutch Government intends to start calculating the taxation on savings and investments on actual returns realized from savings and investments (instead of on a deemed return) starting in 2025. The Supreme Court ruling could make the Dutch Government move faster on the issue. Prospective investors should carefully consider the tax consequences of this Supreme Court ruling and consult their own tax advisor about their own tax situation.

Non-residents of the Netherlands

A holder of common shares that is neither a Dutch Resident Entity nor a Dutch Resident Individual will not be subject to Dutch (corporate) tax in respect of income derived from or deemed to be derived from the common

114

shares or in respect of any capital gains realized on the disposal or deemed disposal of the common shares, provided that:

(i)such holder does not have an interest in an enterprise or deemed enterprise (as defined in the Dutch Income Tax Act 2001 and the Dutch Corporate Income Tax Act 1969) which, in whole or in part, is either effectively managed in the Netherlands or carried on through a permanent establishment, a deemed permanent establishment or a permanent representative in the Netherlands and to which enterprise or part of an enterprise the common shares are attributable; and

(ii)in the event the holder is an individual, such holder does not carry out any activities in the Netherlands with respect to the common shares that go beyond ordinary asset management and does not otherwise derive benefits from the common shares that are taxable as benefits from miscellaneous activities in the Netherlands.

Gift and inheritance taxes

Residents of the Netherlands

Gift or inheritance taxes will arise in the Netherlands with respect to a transfer of the common shares by way of a gift by, or on the death of, a holder of common shares who is resident or deemed resident of the Netherlands at the time of the gift or such holder’s death.

Non-residents of the Netherlands

No gift or inheritance taxes will arise in the Netherlands with respect to a transfer of the common shares by way of a gift by, or on the death of, a holder of common shares who is neither resident nor deemed to be resident of the Netherlands, unless:

(i)in the case of a gift of a common share by an individual who at the date of the gift was neither resident nor deemed to be resident of the Netherlands, such individual dies within 180 days after the date of the gift, while being resident or deemed to be resident of the Netherlands; or

(ii)in the case of a gift of a common share is made under a condition precedent, the holder of the common shares is resident or is deemed to be resident of the Netherlands at the time the condition is fulfilled; or

(iii)the transfer is otherwise construed as a gift or inheritance made by, or on behalf of, a person who, at the time of the gift or death, is or is deemed to be resident of the Netherlands.

For purposes of Dutch gift and inheritance taxes, amongst others, a person that holds the Dutch nationality will be deemed to be resident of the Netherlands if such person has been a resident of the Netherlands at any time during the ten years preceding the date of the gift or such person’s death. Additionally, for purposes of Dutch gift tax, amongst others, a person not holding the Dutch nationality will be deemed to be resident of the Netherlands if such person has been a resident of the Netherlands at any time during the 12 months preceding the date of the gift. Applicable tax treaties may override deemed residency.

Value added tax (VAT)

No Dutch VAT will be payable by a holder of common shares in respect of any payment in consideration for the holding or disposal of the common shares.

Other taxes and duties

No Dutch registration tax, stamp duty or any other similar documentary tax or duty will be payable by, or on behalf of, a holder of common shares in respect of any payment in consideration for the acquisition, holding or disposal of the common shares.

Residency

A holder of common shares will not become, and will not be deemed to be, resident of the Netherlands for Dutch tax purposes by reason only of the acquisition and holding of the common shares.

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F. Dividends and paying agents

Not applicable.

G. Statement by experts

Not applicable

H. Documents on Display

We are subject to the information requirements of the Exchange Act. In accordance with these requirements, the Company files reports and other information with the SEC. The SEC also maintains a web site at http://www.sec.gov that contains reports and other information regarding registrants that file electronically with the SEC.

We make available on our website, free of charge, certain documents regarding our corporate governance. We also make available on our website, free of charge, our annual reports on Form 20-F, our reports on Form 6-K, including any amendments to these reports, as well as certain other SEC filings, as soon as reasonably practicable after they are electronically filed with or furnished to the SEC. Our website address is www.lavatherapeutics.com. The information contained on our website is not incorporated by reference in this document.

References in this annual report on Form 20-F to any contract, agreement or other document may not be complete, and you should refer to the copy of that contract, agreement or other document filed as an exhibit to this or one of our previous SEC filings or available on our website.

I. Subsidiary information

Not applicable.

J. Annual report to security holders

The Company intends to submit any annual report provided to security holders in electronic format as an exhibit to a Current Report on Form 6-K.

Item 11: Quantitative and Qualitative Disclosures About Market Risk

We are exposed to a variety of risks in the ordinary course of our business, including, but not limited to, foreign currency risk and interest rate risk. We regularly assess each of these risks to minimize any adverse effects on our business as a result of those factors. For a detailed discussion, see Note 20 of the consolidated financial statements included elsewhere in this annual report.

This annual report contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act and as defined in the Private Securities Litigation Reform Act of 1995. See “Special Note Regarding Forward-Looking Statements” at the beginning of this annual report.

Item 12: Description of Securities Other than Equity Securities

None.

PART II

Item 13: Defaults, Dividend Arrearages and Delinquencies

None.

Item 14: Material Modifications to the Rights of Security Holders and Use of Proceeds

Use of Proceeds

Our IPO of common shares was effected pursuant to a registration statement on Form F-1, pursuant to which we registered the offering and sale of 7,125,712 common shares, $0.14 par value per share (including

116

425,712 shares available to the underwriters’ for exercise of an option to purchase additional shares) at a public offering price of $15.00 per share for an aggregate public offering price of $106.8 million.

As a result of the IPO, we received net proceeds of approximately $94.2 million, after deducting underwriting discounts, commissions and estimated offering expenses borne by us. None of such payments were direct or indirect payments to any of (i) our directors or officers or their associates, (ii) persons owning 10 percent or more of our common shares, or (iii) our affiliates.

There has been no material change in the planned use of proceeds from our IPO from that described in the final prospectus related to the offering, which we filed with the SEC on March 26, 2021. As of December 31, 2022, we have used approximately $74.4 million of the funds received from our IPO for clinical trials and payments to research and development consultants.

Item 15: Controls and Procedures

A. Disclosure Controls and Procedures

Management of the Company maintains disclosure controls and procedures as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as amended, that are designed to ensure that information required to be disclosed in the reports that are filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed in our reports filed or submitted under the Exchange Act is accumulated and communicated to management, including the Chief Executive Officer and the Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. Disclosure controls and procedures, no matter how well designed and operated, can only provide reasonable assurance of achieving the desired control objectives.

Management has carried out an evaluation, under the supervision and with the participation of the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the disclosure controls and procedures as of December 31, 2022. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company's disclosure controls and procedures were not effective as of December 31, 2022, due to the material weaknesses as discussed further below under the heading “Management’s Annual Report on Internal Control over Financial Reporting” in this Item 15.

Refer to the section “Changes in Internal Control over Financial Reporting” located elsewhere in this Item 15 for additional information regarding changes to our internal controls over financial reporting

B. Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting for the Company, as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Our internal control over financial reporting is a process designed under the supervision of our principal executive and financial officers to provide reasonable assurance regarding the reliability of financial reporting and the preparation of its published financial statements. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit the preparation of financial statements in accordance with generally accepted accounting principles; and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of company assets that could have a material effect on the company’s financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk

117

that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2022, based on the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission Internal Control-Integrated Framework (2013). Management concluded that the Company's internal control over financial reporting was not effective as of December 31, 2022 due to the existence of the material weaknesses described below.

A material weakness is a deficiency (within the meaning of the Public Company Accounting Oversight Board Auditing Standard No. 2201), or combination of control deficiencies in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company’s annual or interim financial statements will not be prevented or detected in a timely basis.

In connection with the preparation of our financial statements as of and for the years ended December 31, 2022 and 2021, we identified the following material weaknesses: (a) the lack of consistent and documented risk assessment procedures and control activities related to our financial reporting and complex accounting, among which are a sufficient level of management review and approval, manual processes, roles and responsibilities, and adequate application and controls over information technology and (b) our ability to: (i) design and maintain formal accounting policies, procedures and controls over the fair presentation of our financial statements; and (ii) design and maintain controls over the preparation and review of journal entries and financial statements, including maintaining appropriate segregation of duties.

After giving full consideration to these material weaknesses, and the additional analyses and other procedures that we performed to ensure that our consolidated financial statements included in this Annual Report on Form 20-F were prepared in accordance with generally accepted accounting principles, our management has concluded that our consolidated financial statements present fairly, in all material respects our financial position, results of operations and cash flows for the periods disclosed in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board.

C. Attestation Report of the Registered Public Accounting Firm

So long as we qualify as an “emerging growth company” as defined under the JOBS Act, our independent accounting firm is not required to issue an attestation report on our internal control over financial reporting.

D. Changes in Internal Control over Financial Reporting

We are committed to maintaining a strong internal control environment, and management believes that the actions below will remediate the material weaknesses identified and strengthen our overall financial control environment.

The Company's management, under the oversight of the Audit Committee, has continued the process of executing its remediation plan. Management has executed on the following measures in its remediation plan:

● performed a detailed risk assessment;

● hired additional internal and external accounting resources, including third-party internal control advisors and technical accounting advisors;

● redesigned and documented critical processes and controls associated with internal control over financial reporting;

● designed and maintained formal accounting policies, procedures and controls over the fair presentation of our financial statements;

● established proper segregation of duties and management review and approvals across all key business processes and application and controls over information technology; 

● performed a complete assessment over the design and implementation of our internal controls over financial reporting;

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● designed and maintained controls over the preparation and review of journal entries and financial statements; and

● tested the operating effectiveness of internal controls over financial reporting and information technology.

Management believes that these actions, once fully implemented and operating, will remediate the material weaknesses discussed above. However, these material weaknesses will not be considered remediated until the applicable controls operate for a sufficient period of time and management has concluded, through testing, that these controls are operating effectively.

Other than the changes related to the material weaknesses noted above, there have been no significant changes in the Company's internal control over financial reporting that have occurred during the period covered by this Annual Report that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

Item 16A: Audit Committee Financial Expert

Our board of directors has determined that two members serving on our audit committee qualify as a financial expert. The qualifications of Karen Wilson and James Noble as financial experts are incorporated by reference to Item 6 of this annual report on Form 20-F.

Item 16B: Code of Ethics

The Company has adopted a Code of Business Conduct and Ethics (Code of Ethics), approved by the board of directors, which is applicable to all employees, including our principal executive officer, principal financial officer, principal accounting officer and controller. A copy of this Code of Ethics is available on our Company website at https://ir.lavatherapeutics.com/corporate-governance/governance-overview.

Item 16C: Principal Accountant Fees and Services

Audit Fees

Audit fees in 2022 and 2021 were $0.7 million and $1.1 million, respectively, and related to audit services provided by our principal accountants, PricewaterhouseCoopers Accountants N.V., in connection with our annual audits, quarterly reviews, and review and maintenance of registration statements.

Audit-Related Fees

None.

Tax Fees

Tax fees were less than $0.1 million in 2022 and 2021. Tax fees related to assistance in preparing tax compliance documents.

All Other Fees

None.

Audit Committee’s Pre-Approval Policies and Procedures

The Audit Committee is responsible for the appointment, replacement, compensation, evaluation and oversight of the work of the independent auditors. As part of this responsibility, the Audit Committee pre-approves all audit and non-audit services performed by the independent auditors in order to assure that they do not impair the auditor’s independence from the Company in accordance with the Audit Committee’s pre-approval policy. All fees in 2022 and 2021 described in this Item 16C above were pre-approved by the Audit Committee.

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Audit Work Performed by Other Than Principal Accountant if Greater than 50%

Not Applicable.

Item 16D: Exemptions from the Listing Standards for Audit Committees

Not applicable.

Item 16E: Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Not applicable.

Item 16F: Change in Registrant’s Certifying Accountant

Not applicable.

Item 16G: Corporate Governance

We qualify as a foreign private issuer. The Listing Rules of the Nasdaq Stock Market include certain accommodations in the corporate governance requirements that allow foreign private issuers to follow “home country” corporate governance practices in lieu of the otherwise applicable corporate governance standards of the Nasdaq Stock Market. While we expect to voluntarily follow most Nasdaq corporate governance rules, we may choose to take advantage of the following limited exemptions:

● exemption from filing quarterly reports on Form 10-Q containing unaudited financial and other specified information or current reports on Form 8-K upon the occurrence of specified significant events;

● exemption from Section 16 rules requiring insiders to file public reports of their securities ownership and trading activities and providing for liability for insiders who profit from trades in a short period of time;

● exemption from the Nasdaq requirement necessitating disclosure of any waivers of the Code of Business Conduct and Ethics for directors and executive officers;

● exemption from the requirement to obtain shareholder approval for certain issuances of securities, including shareholder approval of share option plans;

● exemption from the requirement that our audit committee have review and oversight responsibilities over all “related party transactions,” as defined in Item 7.B of Form 20-F;

● exemption from the requirement that our board of directors have a compensation committee that is composed entirely of independent directors with a written charter addressing the committee’s purpose and responsibilities; and

● exemption from the requirement to have independent director oversight of director nominations.

Furthermore, Nasdaq Rule 5615(a)(3) provides that a foreign private issuer may rely on home country corporate governance practices in lieu of certain of the rules in the Nasdaq Rule 5600 Series and Rule 5250(d). We intend to follow Netherlands corporate governance practices in lieu of Nasdaq corporate governance requirements as follows:

● We do not intend to follow Nasdaq Rule 5620(c) regarding quorum requirements applicable to meetings of shareholders. In accordance with Dutch law and generally accepted business practices, our articles of association do not provide quorum requirements generally applicable to general meetings. To this extent, our practice varies from the requirement of Nasdaq Listing Rule 5620(c), which requires an issuer to provide in its bylaws for a generally applicable quorum, and that such quorum may not be less than one-third of the outstanding voting shares.

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● We do not intend to follow Nasdaq Rule 5605(b)(2), which requires that independent directors regularly meet in executive sessions where only independent directors are present. Our independent directors may choose to meet in executive sessions at their discretion.

● We do not intend to follow Nasdaq Rule 5605(e) regarding the composition of the nominating committee.

Although we may rely on certain home country corporate governance practices, we must comply with Nasdaq’s Notification of Noncompliance requirement (Nasdaq Rule 5625) and the Voting Rights requirement (Nasdaq Rule 5640). Further, we must have an audit committee that satisfies Nasdaq Rule 5605(c)(3), which addresses audit committee responsibilities and authority and requires that the audit committee consist of members who meet the independence requirements of Nasdaq Rule 5605(c)(2)(A)(ii).

Because we are a foreign private issuer, our directors and executive officers are not subject to short-swing profit and insider trading reporting obligations under Section 16 of the Exchange Act. They will, however, be subject to the obligations to report changes in securities ownership under Section 13 of the Exchange Act and related SEC rules.

We intend to take all actions necessary for us to maintain compliance as a foreign private issuer under the applicable corporate governance requirements of the Sarbanes-Oxley Act, the rules adopted by the SEC and Nasdaq listing rules. Accordingly, our shareholders will not have the same protections afforded to shareholders of companies that are subject to all of the corporate governance requirements of Nasdaq.

Item 16H: Mine Safety Disclosure

Not applicable.

Item 16I: Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

PART III

Item 17: Financial Statements

Not applicable.

Item 18: Financial Statements

Index to consolidated financial statements

Report of independent registered public accounting firm (PCAOB ID: 1395)	F-1
Consolidated statements of loss and other comprehensive loss	F-2
Consolidated statements of financial position	F-3
Consolidated statements of changes in equity	F-4
Consolidated statements of cash flows	F-5
Notes to consolidated financial statements	F-6

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of LAVA Therapeutics N.V.

Opinion on the Financial Statements

We have audited the accompanying consolidated statements of financial position of LAVA Therapeutics N.V. and its subsidiary (the “Company”) as of December 31, 2022 and 2021, and the related consolidated statements of loss and other comprehensive loss, of changes in equity and of cash flows for each of the three years in the period ended December 31, 2022 including the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022 and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022 in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board.

Basis for opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ drs. J.W. Middelweerd RA

PricewaterhouseCoopers Accountants N.V.

Utrecht, The Netherlands

April 11, 2023

We have served as the Company’s auditor since 2018.

F-1

LAVA Therapeutics N.V.

Consolidated statements of loss and other comprehensive loss

(In thousands, except share and per share amounts)

		For the Year Ended
		December 31,
	Notes	2022		2021		2020
Revenue:
Research and license revenue	4	$	19,391	$	5,350	$	3,747
Total revenue			19,391		5,350		3,747
Operating expenses:
Research and development	5		(40,105)		(36,945)		(15,701)
General and administrative	6		(14,124)		(12,018)		(2,719)
Total operating expenses			(54,229)		(48,963)		(18,420)
Operating loss			(34,838)		(43,613)		(14,673)
Interest income (expense), net	7		257		(625)		(342)
Foreign currency exchange gain (loss), net	8		2,923		2,040		(869)
Total non-operating income (loss)			3,180		1,415		(1,211)
Loss before income tax			(31,658)		(42,198)		(15,884)
Income tax expense	9		(249)		(157)		(43)
Loss for the year		$	(31,907)	$	(42,355)	$	(15,927)
Items that may be reclassified to profit or loss
Foreign currency translation adjustment	2		(6,749)		(5,642)		(202)
Total comprehensive loss		$	(38,656)	$	(47,997)	$	(16,129)
Loss per share:
Loss per share, basic and diluted	10	$	(1.23)	$	(2.14)	$	(39.91)
Weighted-average common shares outstanding, basic and diluted	10		25,924,005		19,758,169		399,126

The accompanying notes are an integral part of these consolidated financial statements.

F-2

LAVA Therapeutics N.V.

Consolidated statements of financial position

(In thousands)

		As of December 31,
	Notes	2022		2021
Assets
Non-current assets:
Property and equipment, net	11	$	1,432	$	1,445
Right-of-use assets	12		651		501
Other non-current assets and security deposits			809		796
Total non-current assets			2,892		2,742
Current assets:
Receivables and other	4		3,254		363
Prepaid expenses and other current assets	4		4,411		2,568
VAT receivable			—		371
Investments	13		32,535		42,334
Cash and cash equivalents	14		100,333		90,869
Total current assets			140,533		136,505
Total assets		$	143,425	$	139,247
Equity and Liabilities
Equity:
Share capital	15	$	3,715	$	3,653
Equity-settled employee benefits reserve			8,942		4,829
Foreign currency translation reserve	2		(12,972)		(6,223)
Additional paid-in capital	15		194,424		192,270
Accumulated deficit			(108,069)		(76,162)
Total equity			86,040		118,367
Non-current liabilities:
Deferred revenue	4		35,000		—
Lease liabilities	12		431		320
License liabilities	22		—		5,028
Borrowings	16		—		4,284
Total non-current liabilities			35,431		9,632
Current liabilities:
Trade payables and other	17		3,965		2,553
VAT payable			45		—
Borrowings	16		4,640		—
Lease liabilities	12		379		261
License liabilities	22		4,732		5,028
Deferred revenue	4		—		1,527
Accrued expenses and other current liabilities	18		8,193		1,879
Total current liabilities			21,954		11,248
Total liabilities			57,385		20,880
Total equity and liabilities		$	143,425	$	139,247

The accompanying notes are an integral part of these consolidated financial statements.

F-3

LAVA Therapeutics N.V.

Consolidated statements of changes in equity

(In thousands, except for share amounts)

														Equity-
		Preference												settled		Foreign
			Series A			Series B			Series C				Common	employee		currency
		Series A	Share		Series B	Share		Series C	Share		Common		Share	benefits		translation		Additional		Accumulated
	Note	shares	premium		shares	premium		shares	premium		shares		capital	reserves		reserve		paid-in capital		deficit		Total
Balance at January 1, 2020		1,755,845	$	1,221	3,899,766	$	18,340	—	$	—	447,525	$	—	$	365	$	(378)	$	—	$	(13,704)	$	5,844
Loss for period		—		—	—		—	—		—	—		—		—		—		—		(15,927)		(15,927)
Issuance of Series C Preferred shares ($5.48 per share), net of issuance costs of $647		—		—	—		—	4,133,805		22,026	—		—		—		—		—		—		22,026
Series A Preferred and common shares repurchase		(718,250)		(499)	—		—	—		—	(165,750)		—		—		—		—		(4,176)		(4,675)
Share-based compensation expense		—		—	—		—	—		—	—		—		557		—		—		—		557
Foreign currency translation adjustment		—		—	—		—	—		—	—		—		—		(203)		—		—		(203)
Balance at December 31, 2020		1,037,595		722	3,899,766		18,340	4,133,805		22,026	281,775		—		922		(581)		—		(33,807)		7,622
Loss for period		—		—	—		—	—		—	—		—		—		—		—		(42,355)		(42,355)
Share split		—		(143)	—		(536)	—		(589)	—		1,308		—		—		(40)		—		—
Issuance of Series C Preferred shares ($6.22 per share), net of offering costs of $92		—		—	—		—	9,945,221		60,373	—		1,425		—		—		—		—		61,798
Repurchase of Series A and common shares		(718,250)		(400)	—		—	—		—	(165,750)		(122)		—		—		(4,760)		—		(5,282)
Conversion of preference shares		(319,345)		(179)	(3,899,766)		(17,804)	(14,079,026)		(81,810)	18,298,137		—		—		—		99,793		—		—
Issuance of common stock in initial public offering ($15.00 per share), net of offering costs of $11.5 million		—		—	—		—	—		—	6,700,000		947		—		—		87,779		—		88,726
Issuance of overallotment option		—		—	—		—	—		—	425,712		61		—		—		5,877		—		5,939
Issuance of VUmc common stock		—		—	—		—	—		—	235,664		34		—		—		3,621		—		3,655
Share-based compensation expense		—		—	—		—	—		—	—		—		3,907		—		—		—		3,907
Foreign currency translation adjustment		—		—	—		—	—		—	—		—		—		(5,642)		—		—		(5,642)
Balance at December 31, 2021		—		—	—		—	—		—	25,775,538		3,653		4,829		(6,223)		192,270		(76,162)		118,367
Loss for period		—		—	—		—	—		—	—		—		—		—		—		(31,907)		(31,907)
Option exercises		—		—	—		—	—		—	22,197		3		—		—		12		—		15
Issuance of VUmc common stock		—		—	—		—	—		—	491,352		59		—		—		2,142		—		2,201
Share-based compensation expense		—		—	—		—	—		—	—		—		4,113		—		—		—		4,113
Foreign currency translation adjustment		—		—	—		—	—		—	—		—		—		(6,749)		—		—		(6,749)
Balance at December 31, 2022		—	$	—	—	$	—	—	$	—	26,289,087	$	3,715	$	8,942	$	(12,972)	$	194,424	$	(108,069)	$	86,040

The accompanying notes are an integral part of these consolidated financial statements.

F-4

LAVA Therapeutics N.V.

Consolidated statements of cash flows

(In thousands, except for share amounts)

		December 31,
	Notes	2022		2021		2020
Cash flows from operating activities:
Loss before income tax		$	(31,658)	$	(42,198)	$	(15,884)
Adjusted for:
Depreciation and amortization of non-current assets			504		331		213
Foreign currency exchange (gain) loss, net			(2,923)		(2,040)		869
Amortization of right-of-use assets			277		227		251
Share-based compensation expense	19		4,113		3,907		557
Income tax expense			(249)		(157)		(43)
Amortization of premium on investments			(134)		446		—
Changes in working capital:
Receivables and other			(2,891)		777		(1,072)
VAT receivable			416		(35)		(186)
Deferred contract costs	4		—		—		—
Prepaid expenses and other assets			(1,857)		(2,859)		(795)
Trade accounts payable and other			1,413		1,618		323
Deferred offering & financing costs			—		1,623		(323)
Deferred revenue	4		33,510		(4,649)		6,176
License liabilities			(2,828)		13,713		—
Other liabilities			6,350		649		607
Net cash provided by (used in) operating activities			4,043		(28,647)		(9,307)
Cash flows from investing activities:
Purchases of property and equipment			(587)		(764)		(502)
Purchases of investments			(70,877)		(45,291)		—
Maturities of investments			80,810		2,510		—
Net cash provided by (used in) investing activities			9,346		(43,545)		(502)
Cash flows from financing activities:
Proceeds from option exercises			15		—		—
Proceeds from common shares from initial public offering, net	15		—		94,189		—
Proceeds from Series C financing, net			—		61,798		22,025
Payment of Series A preferred and common shares repurchased			—		(5,167)		(4,849)
Proceeds from borrowings			611		680		2,033
Payment of principal portion of lease liabilities			(343)		(340)		(240)
Net cash provided by financing activities			283		151,160		18,969
Net increase in cash and cash equivalents			13,672		78,968		9,160
Cash and cash equivalents at beginning of year			90,869		15,818		7,338
Effects of exchange rate changes			(4,208)		(3,917)		(680)
Cash and cash equivalents at end of year		$	100,333	$	90,869	$	15,818
Supplemental schedule of noncash operating and financing activities:
Issuance of 491,352 common shares to VUmc in lieu of payment for license liabilities		$	2,201	$	—	$	—
Issuance of 235,664 common shares to VUmc in lieu of payment for license liabilities		$	—	$	3,655	$	—
Deferred offering costs in accounts payable and accrued expenses		$	—	$	—	$	489

The accompanying notes are an integral part of these consolidated financial statements.

F-5

LAVA Therapeutics N.V.

Notes to consolidated financial statements

Corporate and Company information

1.1 Corporate Information

LAVA Therapeutics N.V., formerly LAVA Therapeutics B.V., was founded in 2016 and is incorporated and domiciled in the Netherlands. The Company’s registered office is Yalelaan 62, 3584 CM in Utrecht. The Company is registered at the Chamber of Commerce under number 65335740. In connection with becoming a public company on March 29, 2021, the Company changed its name from “LAVA Therapeutics, B.V.” to “LAVA Therapeutics N.V.”

The Company and its subsidiary are a clinical-stage immuno-oncology company dedicated to rapidly developing new cancer treatments that leverage the immune system to save patients’ lives. Using our Gammabody platform, the Company is developing a portfolio of novel bispecific antibodies designed to engage and leverage the potency and precision of gamma delta (gd) T cells to elicit a robust, natural anti-tumor immune response and improve outcomes for cancer patients. The Company is advancing its Gammabody pipeline for the development of potential therapeutics in both hematologic malignancies and solid tumors.

The consolidated financial statements of LAVA Therapeutics N.V. were authorized for issue by the Company’s board of directors on April 11, 2023.

1.2 Company information

The consolidated financial statements of the Company include:

			% of equity interest
Name	Legal seat	Country of incorporation	2022		2021
Lava Therapeutics N.V.	Utrecht	The Netherlands	100	%	100	%
Lava Therapeutics Inc.	Delaware	United States of America	100	%	100	%

The Company’s 100% subsidiary, LAVA Therapeutics, Inc., which was founded in August 2019, is incorporated in the United States of America and acts as a service provider to the parent, LAVA Therapeutics N.V.

2. Summary of significant accounting policies

The principal accounting policies applied in the preparation of these consolidated financial statements are included below. These policies have been consistently applied to all of the years presented, unless otherwise stated.

(a)Basis of preparation

The consolidated financial statements of the Company have been prepared in accordance with and comply with IFRS as issued by the IASB.

The consolidated financial statements of the Company have been prepared on a historical cost basis.

The preparation of the consolidated financial statements in conformity with IFRS requires the application of certain critical accounting estimates. It also requires management to exercise its judgment in the process of applying the accounting policies. The areas involving a greater degree of judgment or complexity, or areas in which assumptions and estimates are significant to the consolidated financial statements, are disclosed in Note 3.

Going concern

These consolidated financial statements have been prepared by management on the assumption that the Company will be able to continue as a going concern, which presumes that the Company will, for the foreseeable future, be able to realize its assets and discharge its liabilities in the normal course of business.

F-6

LAVA Therapeutics N.V.

Notes to consolidated financial statements

Through December 31, 2022, the Company funded its operations with proceeds from sales of equity financings, collaboration and licensing agreements, government grants and borrowings under various agreements. Since inception the Company has incurred recurring net losses. The Dutch Research and Development Act (WBSO) provides compensation for a part of research and development wages and other costs through a reduction in payroll taxes. WBSO grant amounts are offset against wages and salaries and included in research and development expenses in the consolidated statements of loss and comprehensive loss.

As of December 31, 2022, the Company had an accumulated deficit of $108.1 million. The Company expects to continue to generate operating losses in the foreseeable future. The Company expects that its cash, cash equivalents and investments of $132.9 million as of December 31, 2022 will be sufficient to fund its operating expenses and capital expenditure requirements for at least the next 12 months following the issuance of these financial statements. Accordingly, the consolidated financial statements have been prepared on a going concern basis.

Until we can generate sufficient product revenue to satisfy our cash requirements, which we may never do, we expect to finance our future cash needs through a combination of public or private equity offerings, debt financings, collaborations, strategic alliances, licensing arrangements and other marketing or distribution arrangements. Disruptions in the financial markets in general may make equity and debt financing more difficult to obtain and may have a material adverse effect on our ability to meet our fundraising needs. If we are unable to obtain sufficient funding in a timely manner or on commercially acceptable terms, we may have to delay, reduce the scope of, or eliminate one or more of our research programs, and consider other cost reduction initiatives, such as downsizing our operations or withholding initiation or expansion of clinical trials or research. In addition, in the event we are not able to generate sufficient funds, we may be unable to continue as a going concern and our business, financial condition and/or results of operations could be materially and adversely affected and could reduce the price of our common shares and we may ultimately go into insolvency. In addition, any perceived or actual inability by us to finance our clinical development activities and other business activities may cause the market price of our common shares to decline.

Global Conditions

In March 2020, the COVID-19 virus caused a worldwide pandemic. Although the pandemic has impacted the timing of onboarding investigational sites and enrolling patients in our ongoing Phase 1/2a clinical trial for LAVA-051 and LAVA-1207, to date we have not experienced any material business disruption or impact to our consolidated financial statements as a result of the pandemic.

In addition, there may be adverse effects on our business condition and results from general economic and market conditions and overall fluctuations in the United States and international equity markets, including deteriorating market conditions due to investor concerns regarding inflation and hostilities between Russia and Ukraine.

(b)Basis of consolidation

Subsidiaries are all entities over which the Company has control. Control is achieved when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are consolidated from the date on which control over the subsidiary is transferred to the Company and are deconsolidated from the date that control over the subsidiary ceases.

When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies into line with the Company’s accounting policies. All intercompany assets and liabilities, equity, income, expenses, and cash flows relating to transactions between members of the Company are eliminated in full on consolidation. Certain prior year amounts have been reclassified to reflect current year presentation.

F-7

LAVA Therapeutics N.V.

Notes to consolidated financial statements

c)Foreign currency

Items included in the financial statements of each of the Company’s entities are measured using the currency of the primary economic environment in which the entity operates. The Company’s consolidated financial statements are presented in USD. The parent company, LAVA Therapeutics N.V., has the functional currency of EUR. The subsidiary company, LAVA Therapeutics, Inc., has the functional currency of USD.

Foreign currency transactions are translated into the functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation of monetary assets and liabilities denominated in foreign currencies at year end exchange rates are recognized within foreign currency exchange gain (loss), net, in the consolidated statements of loss and comprehensive loss.

For presentation purposes in USD, all assets and liabilities denominated in foreign currencies are translated into USD using exchange rates in effect as of the date of the balance sheet date. Revenue and expense transactions are translated at the monthly average exchange rates, and certain specific equity transactions are translated at the exchange rate in effect at the time of the transaction. All resulting exchange differences were recognized within currency translation adjustment in the consolidated statements of loss and other comprehensive loss and as a separate component of shareholders’ equity.

d)Segment information

Operating segments are identified based on whether the allocation of resources and/ or the assessment of performance of a particular component of Company’s activities are regularly reviewed as a separate operating segment by Company’s Chief Operating Decision Maker. The Company’s business activities are organized into one reportable segment, which is consistent with the basis of the internal reports that the management regularly reviews in allocating resources and assessing performance.

e)Cash flow statement

The cash flow statement has been prepared using the indirect method. For the purposes of the consolidated statements of cash flows, cash and cash equivalents consist of cash and short-term deposits, as defined below, net of outstanding bank overdrafts.

f)Research and License Revenue

We may enter into collaboration and licensing arrangements for research and development, manufacturing, and commercialization activities with counterparties for the development and commercialization of our product candidates. These arrangements may contain multiple components, such as (i) licenses, (ii) research and development activities, and (iii) the manufacturing of certain materials. Payments pursuant to these arrangements may include non-refundable and refundable payments, payments upon the achievement of significant regulatory, development and commercial milestones, sales of product at certain agreed-upon amounts, and royalties on product sales.

In determining the appropriate amount of revenue to be recognized as we fulfill our obligations under a collaboration agreement, we perform the following steps: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are capable of being distinct; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue as we satisfy each performance obligation.

g)Research and development expenses

The Company expenses research and development expenses as incurred and does not capitalize them. The Company’s research and development expenses consist primarily of costs incurred in performing research

F-8

LAVA Therapeutics N.V.

Notes to consolidated financial statements

and development activities, including personnel-related expenses such as salaries, share-based compensation and benefits, facility costs, depreciation and external costs of outside vendors engaged to conduct preclinical and clinical development activities. The Company accounts for a governmental research and development payroll tax subsidy from Wet Bevordering Speur en Ontwikkelingswerk (WBSO) as a reduction of the research and development personnel-related expenses when incurred.

h)General and administrative expenses

The Company’s general and administrative expenses consist of personnel-related expenses for employees involved in general corporate functions, including accounting, finance, insurance, tax, legal and human relations, costs associated with outside professional fees such as legal counsel and auditors, costs associated with use by these functions of facilities and equipment, such as depreciation expenses, premises maintenance expenses and other general corporate expenses. General and administrative expenses are expensed as incurred.

i)Share-based awards

Share options granted to employees and consultants providing similar services are measured at the grant date fair value of the equity instruments granted. The grant date fair value is determined through the use of an option-pricing model considering the following variables:

a) the exercise price of the option;

b) the expected life of the option;

c) the current value of the underlying shares;

d) the expected volatility of the share price;

e) the dividends expected on the shares; and

f) the risk-free interest rate for the life of the option.

The Company accounts for these awards as equity-settled share-based payment awards. For the Company’s share option plans, management’s judgment is that the Black-Scholes valuation formula is the most appropriate method for determining the fair value of the options considering the terms and conditions attached to the grants made and to reflect exercise behavior. Prior to the Company’s IPO, as a private company there was no published share price information available. Consequently, the Company estimated the fair value of its shares and the expected volatility of that share value for option grants prior to the IPO. These assumptions and estimates are further discussed in Note 19 to the financial statements.

The result of the share option valuations and the related compensation expense that is recognized for the respective vesting periods during which services are received is dependent on the model and input parameters used. Even though management considers the fair values reasonable and defensible based on the methodologies applied and the information available, others might derive a different fair value for the options.

j)Employee benefits

The Company provides defined contribution plans to its employees. Contributions to defined contribution plans are expensed when employees provide services. The Company has no further payment obligations once the contributions have been paid. The Company’s post-employment schemes do not include any defined benefit plans. Expenses associated with the servicing of defined contribution plans were less than $0.1 million for each of the years ended December 31, 2022, 2021 and 2020.

k)Income taxes

Income tax expense comprises current and deferred tax. It is recognized in profit or loss except to the extent that it relates to a business combination, or items recognized directly in equity or in other comprehensive

F-9

LAVA Therapeutics N.V.

Notes to consolidated financial statements

income. Current tax comprises the expected tax payable or receivable on the taxable income or loss for the year and any adjustment to tax payable or receivable in respect of previous years. It is measured using tax rates enacted or substantively enacted at the reporting date. Current tax also includes any tax arising from dividends. Current tax assets and liabilities are offset only if certain criteria are met.

Deferred tax is recognized in respect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. Deferred tax is not recognized for:

● temporary differences on the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither accounting nor taxable profit or loss;

● temporary differences related to investments in subsidiaries, associates, and joint arrangements to the extent that the Company is able to control the timing of the reversal of the temporary differences and it is probable that they will not reverse in the foreseeable future; and

● taxable temporary differences arising on the initial recognition of goodwill.

Deferred tax assets are recognized for unused tax losses, unused tax credits and deductible temporary differences to the extent that it is probable that future taxable profits will be available against which they can be used. Deferred tax assets are reviewed at each reporting date and are reduced to the extent that it is no longer probable that the related tax benefit will be realized; such reductions are reversed when the probability of future taxable profits improves.

Unrecognized deferred tax assets are reassessed at each reporting date and recognized to the extent that it has become probable that future taxable profits will be available against which they can be utilized.

Deferred tax is measured at the tax rates that are expected to be applied to temporary differences when they reverse, using tax rates enacted or substantively enacted at the reporting date.

The measurement of deferred tax reflects the tax consequences that would follow from the manner in which the Company expects, at the reporting date, to recover or settle the carrying amount of its assets and liabilities.

l)Cash and cash equivalents

Cash and cash equivalents in the consolidated statements of financial position comprise of cash at banks and on hand and short-term deposits with a maturity of three months or less, which are subject to an insignificant risk of changes in value.

For the purposes of the consolidated statements of cash flows, cash and cash equivalents consist of cash and short-term deposits, as defined above, net of outstanding bank overdrafts.

m)Investments

Our investments in debt securities consist entirely of investments in U.S. Treasury securities, with maturities ranging from three months to one year. All of these investments are classified as current assets in our consolidated statements of financial position. We have the intent and ability to hold all investments in debt securities until maturity. Accordingly, all investments are recorded at amortized cost on our consolidated statements of financial position, with the amortization of premiums or discounts and earned interest income recorded in our consolidated statements of loss.

n)Property and equipment

Property, plant, and equipment are stated at cost less accumulated depreciation and accumulated impairment losses, if any. The cost of an item of property, plant and equipment is recognized as an asset if it is probable that future economic benefits associated with the item will flow to the entity and the cost of the item can be measured reliably.

F-10

LAVA Therapeutics N.V.

Notes to consolidated financial statements

Property, plant, and equipment include major expenditures for new assets, improvements and replacement assets that extend the useful lives of assets or increase their revenue-generating capacities. Repair and maintenance costs are expensed as incurred.

Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets, as follows:

Building improvements	10
Laboratory equipment	5
Office equipment	5
Information and communication equipment (ICT)	5

The estimated useful life for building improvements is the shorter of the estimated useful life and the lease term. Depreciation of property, plant and equipment used for laboratory equipment and ICT equipment is included within research and development expenses in the consolidated statements of loss and other comprehensive loss. Depreciation of all other property, plant and equipment is allocated between research and development and general and administrative expenses based on headcount.

The carrying amount of an item of property, plant and equipment is derecognized on disposal, or when no future economic benefits are expected from its use or disposal. The gain or loss arising from the derecognition of an item of property, plant, and equipment (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in “Gain / (loss) on disposal of non-current assets, net” in the consolidated statements of loss and other comprehensive loss when the asset is derecognized.

Management reviews the carrying amount of property, plant, and equipment for impairment when there is an indication that the carrying amount may exceed the expected recoverable amount.

o)Impairment of long-lived assets

Assets that are subject to depreciation or amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. An impairment loss is recognized in the consolidated statements of loss and other comprehensive loss consistent with the function of the assets, for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s fair value less costs of disposal and value in use. For the purposes of assessing impairment, assets are grouped at the lowest levels for which there are largely independent cash inflows. Prior impairments of non-financial assets (other than goodwill) are reviewed for possible reversal each reporting period.

p)Provisions

Provisions are recognized when the Company has a present obligation (legal or constructive) as a result of a past event, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimate. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provision is reversed.

q)Value added tax

Expenses and assets are recognized net of the amount of value added tax (VAT) except when the VAT incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case the VAT is recognized as part of the cost of acquisition of the asset or as part of the expense item.

The net amount of the VAT recoverable from, or payable to, the taxation authority is included as part of receivables or payables in the consolidated statements of financial position.

F-11

LAVA Therapeutics N.V.

Notes to consolidated financial statements

r)Financial instruments

(i) Financial assets

The Company’s financial assets are comprised of cash and cash equivalents, investments, trade and other receivables, security deposits, other current and non-current assets. All financial assets are recognized initially at fair value plus transaction costs that are attributable to the acquisition of the financial asset, and follow our business model of standard working capital purposes. Purchases and sales of financial assets are recognized on the settlement date; the date that the Company receives or delivers the asset. The Company classifies its financial assets primarily as cash and cash equivalents and receivables. Receivables are non-derivative financial assets, with fixed or determinable payments that are not quoted in an active market. They are included in current assets.

Financial assets are derecognized when the rights to receive cash flows from the asset have expired, or the Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full.

(ii) Financial liabilities

The Company’s financial liabilities are comprised of trade and other payables, lease liabilities, and borrowings. All financial liabilities are recognized initially at fair value, adjusted for transaction costs.

After initial recognition, borrowings are subsequently measured at amortized cost using the effective interest method. The effective interest method amortization is included in finance costs in the consolidated statements of loss and other comprehensive loss.

Payables and borrowings are classified as current liabilities unless the Company has an unconditional right to defer settlement of the liability for at least the next 12 months after the reporting date.

Financial liabilities are derecognized when the obligation under the liability is discharged, cancelled, or expires.

(iii) Fair value measurements

The Company does not hold any financial assets and financial liabilities other than those measured at amortized cost, as our business model is such that we have the intent to hold these instruments for the sole purpose of collecting contractual cash flows, and the contractual terms give rise to cash flows that are solely for payments of principal and interest. Management assessed that the carrying values of the Company’s financial assets and financial liabilities measured at amortized cost are a reasonable approximation of their fair values.

s)Leases

The Company is party to lease contracts relating to laboratory and office facilities located in the Netherlands and the U.S.

(i) Right-of-use assets

The Company recognizes right-of-use assets at the commencement date of the lease (i.e., the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities. The recognized right-of-use assets are depreciated on a straight-line basis over the shorter of its estimated useful life and the lease term. Right-of- use assets are subject to impairment.

(ii) Lease liabilities

At the commencement date of the lease, the Company recognizes lease liabilities measured at the present value of lease payments to be made over the lease term. The lease payments include fixed payments

F-12

LAVA Therapeutics N.V.

Notes to consolidated financial statements

(including in substance fixed payments) less any lease incentives receivable, variable lease payments that depend on an index or a rate, and amounts expected to be paid under residual value guarantees.

In calculating the present value of lease payments, the Company uses the incremental borrowing rate at the lease commencement date if the interest rate implicit in the lease is not readily determinable. After the commencement date, the amount of lease liabilities is increased to reflect the accretion of interest and reduced for the lease payments made. In addition, the carrying amount of lease liabilities is remeasured if there is a modification, a change in the lease term, a change in the in-substance fixed lease payments or a change in the assessment to purchase the underlying asset.

t)Revision of immaterial misstatements

During the year ended December 31, 2022, the Company identified misstatements in its historical accounting for foreign currency translations and share-based compensation expenses in the consolidated financial statements for certain prior periods. Management evaluated the misstatements and concluded that they were immaterial, either individually or in the aggregate, to its current or previously issued consolidated financial statements. As a result, certain comparative amounts in the consolidated statements of profit and loss and comprehensive profit and loss, financial position, changes in equity and cash flows have been revised to correct for such immaterial misstatements with respect to foreign currency translations and share-based compensation expenses. Such revisions and their impact are disclosed more fully in Note 23, “Revision of Immaterial Misstatements.”

3. Material accounting judgments, estimates and assumptions

The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of revenues, expenses, assets, liabilities, and equity in the consolidated financial statements and the accompanying disclosures. Estimates and judgments are based on historical experience and other factors, including expectations of future events, and are continually evaluated. Uncertainty about these assumptions and estimates could result in outcomes that require a material adjustment to the carrying amount of assets or liabilities affected in future periods.

Judgments

In the process of applying the Company’s accounting policies, management has made the following judgments, which have the most significant effect on the amounts recognized in the consolidated financial statements:

Clinical trial expenses

As part of the process of preparing our financial statements, we are required to estimate our clinical trial expenses. Our clinical trial accrual process seeks to account for expenses resulting from our obligations under contracts with vendors, consultants and CROs and clinical site agreements in connection with conducting clinical trials. The financial terms of these contracts are subject to negotiations, which vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided to us under such contracts. Our objective is to reflect the appropriate clinical trial expenses in our financial statements by matching the appropriate expenses with the period in which services and efforts are expended. We account for these expenses according to the progress of the trial as measured by subject progression and the timing of various aspects of the trial.

We determine accrual estimates based on estimates of the services received and efforts expended that take into account discussion with applicable personnel and outside service providers as to the progress or state of completion of trials. During the course of a clinical trial, we adjust our clinical expense recognition if actual results differ from our estimates. We make estimates of our accrued expenses and prepaid assets as of each balance sheet date in our financial statements based on the facts and circumstances known to us at that time. Our clinical trial accrual and prepaid assets are dependent, in part, upon the receipt of timely and accurate reporting from CROs and other third-party vendors. Although we do not expect our estimates to differ

F-13

LAVA Therapeutics N.V.

Notes to consolidated financial statements

materially from amounts we actually incur, our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in us reporting amounts that are too high or too low for any particular period.

Deferred tax assets

Deferred tax assets have not been recognized in respect of tax losses and capitalization of IP development costs for Dutch corporate income tax purposes, because the Company has no history of generating taxable profits and at the statement of financial position date, there is no convincing evidence that sufficient taxable profit will be available against which the tax losses can be utilized.

In order to promote innovative technology development activities and investments in new technologies, a corporate income tax incentive has been introduced in Dutch tax law called the Innovation Box. Profits from self-developed qualifying intangible assets are effectively subject to a 9% income tax rate for 2021 and future years, instead of the general headline rate of 25.8% as of 2022. LAVA Therapeutics N.V. believes it qualifies for the Innovation Box and is in this respect currently in a process for obtaining advance certainty from the Dutch tax authorities.

Estimates and assumptions

The key assumptions concerning the future and other key sources of estimation uncertainty at the reporting date, which have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year, are described below. The Company based its assumptions and estimates on parameters available when the consolidated financial statements were prepared. Existing circumstances and assumptions about future developments, however, may change due to market changes or circumstances arising that are beyond the control of the Company. Such changes are reflected in the assumptions when they occur.

Research and license revenue

We must develop estimates and assumptions that require judgment to determine the underlying stand-alone selling price for each performance obligation, which determines how the transaction price is allocated among the performance obligations. The estimation of the stand-alone selling price may include such estimates as forecasted revenues and costs, development timelines, discount rates and probabilities of regulatory and commercial success. We also apply significant judgment when evaluating whether contractual obligations represent distinct performance obligations, allocating transaction price to performance obligations within a contract, determining when performance obligations have been met, assessing the recognition and future reversal of variable consideration and determining and applying appropriate methods of measuring progress for performance obligations satisfied over time.

New standards, interpretations and amendments adopted by the Company

In May 2021, the IASB issued amendments to IAS 12 – Income Taxes, Deferred Tax related to Assets and Liabilities arising from a Single Transaction. The amendments narrowed the scope of the recognition exemption in paragraphs 15 and 24 of IAS 12 (recognition exemption) so that it no longer applies to transactions that, on initial recognition, give rise to equal taxable and deductible temporary differences. The amendments are effective for annual reporting periods beginning on or after January 1, 2023. Early adoption is permitted. The Company has not early adopted these amendments, and does not expect the adoption of these amendments to have a material impact on our consolidated financial statements.

The Company has not early adopted any standards, interpretations or amendments that have been issued, but are not yet effective. The Company intends to adopt these new and amended standards and interpretations, if applicable, when they become effective. There are no standards presently known that are not yet effective and that would be expected to have a material impact on the Company in current or future reporting periods and on foreseeable future transactions.

F-14

LAVA Therapeutics N.V.

Notes to consolidated financial statements

4. Revenue

Seagen Agreement

In September 2022, we entered into an exclusive worldwide license agreement with Seagen (Seagen Agreement) to develop, manufacture and commercialize SGN-EGFRd2 (LAVA-1223), an advanced preclinical asset that utilizes LAVA’s proprietary Gammabody technology to target EGFR-expressing solid tumors. Under the terms of the agreement, we received a $50.0 million nonrefundable upfront payment in October 2022 and could receive up to approximately $650.0 million in potential development, regulatory and commercial milestones, and royalties ranging from high single-digit to mid-teen percentages on future sales, within a range of less than 10%. The agreement also provides Seagen with the opportunity to exclusively negotiate rights to apply LAVA's proprietary Gammabody platform on up to two additional tumor targets.

We are entitled to receive tiered royalties based on commercial sales levels from mid-single to double digit percentages of net sales of licensed products. Seagen has also granted us a one-time option to obtain increased royalties if we exercise a buy-up option within a certain amount of time from certain key early clinical data becoming available for the first licensed product. We have a specified period of time after notice of such buy-up option to pay Seagen a one-time fee of $35.0 million (buy-up fee). In the event we exercise the buy-up option and pay the buy-up fee, we are entitled to receive increased future royalty percentages to a range of low double-digit to high mid-teen percentages on future sales, within a range of less than 10%, and certain future milestones will be decreased by 30%.

Royalties are payable on a licensed product-by-licensed product and country-by-country basis beginning with the first commercial sale of such licensed product in such country of sale and expiring ten years after such sale, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory.

Under the Seagen Agreement we are also entitled to receive reimbursement of up to $6.5 million for certain agreed to research, manufacturing and supply activities, as well as the transfer of all manufacturing-related know-how and materials, including all CMC documentation, data and processes, to enable the manufacture of licensed compounds and products by Seagen.

We determined that the Seagen Agreement and the research, manufacturing and supply activities and materials transfer fall within the scope of IFRS 15, Revenue from Contracts with Customers (IFRS 15). In calculating the transaction price, we determined the following four performance obligations under the agreement: (i) provide exclusive license; (ii) provide manufacturing technology transfer activities; (iii) provide initial drug supply; and (iv) research activities, including data and support for regulatory submission.

As of the agreement date in September 2022, we allocated the transaction price to the performance obligations described above as follows:

			Cumulative
	Transaction		Revenue		Contract
(in thousands)	Price		Recognized		Asset
License	$	50,000	$	15,165	$	—
Manufacturing technology transfer activities		2,167		2,073		—
Initial supply		3,583		—		3,309
Research activities		750		663		—
Buy-up fee		(35,000)		—
	$	21,500	$	17,901	$	3,309

F-15

LAVA Therapeutics N.V.

Notes to consolidated financial statements

For each of the performance obligations described above, we have determined the following methods of revenue recognition:

● License: We recognized revenue from the license at a point in time. Upon signing the Seagen Agreement, ownership of the license was immediately transferred to Seagen. We no longer have any rights to the license other than to fulfill our obligations under the Seagen Agreement, and we do not have the obligation to improve, modify or update the license transferred. As such there is no significant continued involvement in the license provided. Seagen can begin to use and benefit from the license after effective date of the Agreement as they are now the sole ‘owner’ of the underlying patents and know-how. In connection with the license performance obligation, we recognized revenue of $15.2 million for the year ended December 31, 2022. See below for further discussion on the considerations of the buy-up fee.

● Manufacturing technology transfer activities: We recognize manufacturing technology transfer activities over time. These activities under the Seagen Agreement are performed by us at the direction of Seagen. As such, we record revenue related to these activities over time as they occur, measured based on a cost-to-cost method. Based on the manufacturing technology transfer activities performed during the year ended December 31, 2022, we recognized revenue and recorded a receivable of $2.1 million. We expect the remainder of revenue related to this performance obligation to be recognized in 2023.

● Initial supply: We recognize revenue from the initial supply of drug product at a point in time. We have recorded $3.3 million in prepaid expenses and other current assets, representing the value of the initial supply of drug product we have developed. In doing so, we also reduced research and development expenses related to this drug supply previously recorded. We are obligated to transfer this initial supply to Seagen after entering into a separate supply and materials transfer agreement with Seagen. This supply and materials transfer agreement was executed in January 2023. We will recognize revenue at the point in time that the supply and materials transfer agreement is executed, and we transfer the initial supply of drug product to Seagen. Once transferred to Seagen, we have no further rights or ownership to the drug product. We did not recognize any revenue related to the initial supply of drug product for the year ended December 31, 2022. We expect the revenue related to this performance obligation to be recognized in 2023.

● Research activities: We recognize research activities over time. These activities under the Seagen Agreement are performed by us at the direction of Seagen. As such, we record revenue related to these activities over time as they occur, measured based on a cost-to-cost method. Based on the manufacturing and supply activities performed during the year ended December 31, 2022, we recognized revenue and recorded a receivable of $0.7 million. We expect the remainder of revenue related to this performance obligation to be recognized in 2023.

● Buy-up fee: We recognize revenue from the buy-up fee at a point in time. We determined that the one-time buy-up fee of $35.0 represents variable consideration, for which we have deferred revenue recognition until such time the option is exercised or expires. Accordingly, we received the non-refundable upfront payment of $50.0 million in October 2022, and recorded a deferred revenue liability of $35.0 million on our consolidated statement of financial position as of December 31, 2022. If we do not exercise this buy-up option, the revenue related to this performance obligation will be recognized. If we do exercise this buy-up option, this amount will be accounted for as a refund of the transaction price to the customer. We expect the ability for us to make a decision on whether or not to exercise the buy-up option to occur in 2026.

F-16

LAVA Therapeutics N.V.

Notes to consolidated financial statements

Janssen Agreement

In May 2020, the Company entered into a research collaboration and license agreement (Janssen Agreement) with Janssen Biotech, Inc. (Janssen). As part of the Janssen Agreement, the Company received a non-refundable upfront payment of $8.0 million, which was recognized on a straight-line basis over the two-year term of the research activities under the agreement. The straight-line method of recognition materially approximates the cost-to-cost method of revenue recognition. As of December 31, 2022, we had no remaining unearned income related to this payment. Revenues for the year ended December 31, 2021 have been revised for certain immaterial misstatements relating to foreign currency translation. Further information regarding the misstatements and related revision is included in Note 23 - Revision of Immaterial Misstatements.

The Company is entitled to receive tiered royalties based on commercial sales levels from low to mid-single digit percentages of net sales of licensed products. Royalties are payable on a licensed product-by-licensed product and country-by-country basis beginning with the first commercial sale of such licensed product in such country of sale and expiring ten years after such sale, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory and expires 10 years after such sale. The Company is eligible to receive a research milestone and further payments upon the achievement of certain development and commercial milestones.

Development milestones

In December 2020, the Company achieved the first Research Milestone, as defined in the Janssen Agreement, triggering a milestone payment of $1.0 million. In September 2021, the Company achieved the second Research Milestone, triggering a milestone payment of $1.0 million. Revenue for these development milestones was recognized at the point in time the milestone was achieved.

Deferred Revenue

The Company’s deferred revenue balance relates to amounts received, but not yet earned under both the Janssen Agreement and Seagen Agreement as described above. As of December 31, 2021, the deferred revenue balance related only to the Janssen Agreement, which was fully recognized in 2022. As of December 31, 2022, we established a deferred revenue balance related to the Seagen Agreement buy-up option as described above. The following table presents changes in the deferred revenue balance:

(in thousands)
Balance at January 1, 2021	$	(6,176)
Recognized during the period		4,354
Foreign currency translation difference		295
Balance at December 31, 2021		(1,527)
Deferral of revenue		(35,000)
Recognized during the period		1,490
Foreign currency translation difference		37
Balance at December 31, 2022	$	(35,000)

F-17

LAVA Therapeutics N.V.

Notes to consolidated financial statements

5. Research and development expenses

Research and development expenses include the following categories:

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Pre-clinical and clinical trial expenses	$	28,178	$	14,188	$	11,325
Personnel-related expenses		6,150		4,955		2,276
Research and development activities expenses		2,241		1,843		1,022
Share-based compensation expense		1,975		788		232
Facilities and other research and development expenses		1,546		814		643
VUmc and other license expenses		15		14,357		203
	$	40,105	$	36,945	$	15,701

Refer to Note 22 for additional information about VUmc license expenses. Government grants, which are a reduction of payroll taxes in the Netherlands, amounted to $1.6 million in 2022, $1.7 million in 2021, and $1.0 million in 2020. These amounts are an offset to wages and salaries that are part of our research and development expenses in the income statement. The increase in the respective periods was primarily due to increased research activities in the Netherlands.

6. General and administrative expenses

General and administrative expenses include the following categories:

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Personnel-related expenses	$	5,010	$	3,800	$	1,474
Professional and consultant fees		3,954		2,593		683
Insurance, facilities, fees and other related costs		3,022		2,506		236
Share-based compensation expense		2,138		3,119		326
	$	14,124	$	12,018	$	2,719

7. Interest (income) expense, net

	For the Year Ended December 31,
(in thousands)	2022			2021		2020
Interest (income) expense on borrowings and deposits, net	$	(339)	$	564	$	253
Interest expense related to leases		82		61		89
	$	(257)	$	625	$	342

8. Foreign currency exchange gain (loss), net

Changes in foreign currency exchange gain (loss), net were primarily due to the impact of the fluctuation of the USD currency rate compared to the Euro on transaction gains and losses on cash and investments and other transactions denominated in USD held and occurring in a Euro functional currency entity. Foreign currency exchange loss for the years ended December 31, 2022, 2021 and 2020 were $2.9 million, $2.0 million, and $0.9 million, respectively. Refer to Note 23 for additional information regarding the revision of immaterial misstatements affecting these amounts.

9. Taxation

The Company is subject to income taxes in the Netherlands and the United States.

F-18

LAVA Therapeutics N.V.

Notes to consolidated financial statements

Netherlands

No tax charge or income was recognized during the reporting periods since the Company is in a loss-making position and has a history of losses. As of December 31, 2022 the Company has Dutch tax loss carryforwards of $5.9 million. The 2022 and 2021 taxable amounts are not final as the 2022 and 2021 Dutch corporate income tax return are still in draft. The 2020 Dutch corporate income tax return is final and has been filed.

As a result of the Dutch corporate income tax law, tax loss carryforwards are not subject to a time limitation and remain available for offset indefinitely. Actual offset of these losses is however limited to 50% of the taxable amount that exceeds EUR 1 million (previously losses carry forward were subject to a time limitation of six years whereas losses from 2018 and prior years were subject to a time limitation of nine years – all losses that were still available for offset on 1 January 2022 became available for offset indefinitely).

The following table provides an overview of our unrecognized tax loss carryforwards by year:

(in thousands)	Loss per year
2017	$	862
2018		2,756
2019		1,084
2020		—
2021		908
2022		289
	$	5,900

In order to promote innovative technology development activities and investments in new technologies, a

corporate income tax incentive has been introduced in Dutch tax law called the “Innovation Box.” The effective rate for Innovation Box profits is 9%. Lava Therapeutics N.V. has applied for the Innovation Box and its request is currently under final review with the Dutch Tax Authorities. For tax purposes, we capitalized IP development costs of $27.8 million, $33.9 million and $14.6 million in our tax returns for the years ended 2022, 2021 and 2020, respectively. In total, $84.1 million of IP development costs was capitalized. This amount will reduce future taxable income due to future tax amortization of capitalized IP development costs. The deferred tax asset have not been recognized.

On the basis of the 2022 annual accounts, there are accounting-to-tax differences of $32 million. These differences primarily relate to capitalization of IP development costs for Dutch corporate income tax purposes and IFRS 16 lease amounts. Permanent differences relate to non-deductible share-based payment expenses, expenses which were treated as non-deductible for Dutch corporate income tax purposes and other non-deductible mixed expenses.

Deferred income tax assets can only be recognized for tax losses and capitalization of IP development costs for Dutch corporate tax purposes to the extent that the realization of the related tax benefit through future taxable profits is probable. The Company recognizes deferred tax assets arising from unused tax losses or tax credits only to the extent there is convincing other evidence that sufficient taxable profit will be available against which the unused tax losses or unused tax credits can be utilized by the Company. Management concluded that there is not sufficient probability as per IAS 12, Income Taxes, that there will be future taxable profits available in the foreseeable future against which the unused tax losses and deduction of capitalized IP development costs can be used; therefore, a deferred tax asset has not been recognized.

The statute of limitation in the Netherlands is five years, starting from the day after the end of the tax year and any extensions granted for filing the corporate income tax returns. The tax authorities are allowed to audit years for which a final assessment has already been imposed. Since our inception was in 2016, all tax years are currently open for an audit by the Dutch tax authorities.

F-19

LAVA Therapeutics N.V.

Notes to consolidated financial statements

United States

A tax charge was recognized during the reporting periods due to the U.S. profitable position. The activities of LAVA Therapeutics, Inc. are limited and regard only to the CEO, CFO and CMO for LAVA Therapeutics N.V. and related staff who are domiciled in the U.S. The remuneration of LAVA Therapeutics, Inc. is based on the costs incurred for the services rendered including a profit mark-up.

Reconciliation of income tax expense at statutory tax rate and the income expenses as reported in the consolidated statement of loss and other comprehensive income is as follows:

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Loss before income tax	$	(31,658)	$	(42,198)	$	(15,884)
Computed 25.8% tax on Loss (2021/2020: 25%)		(8,168)		(10,549)		(3,971)
Tax effect of:
Non-deductible costs		1,080		982		124
Unrecognized deferred tax for losses and temporary differences		7,192		9,435		3,939
Difference in overseas tax rates		72		46		30
Change in deferred tax asset		72		244		(18)
Previously unrecognized tax losses now recouped to reduce current tax expense		—		—		(61)
Total corporate tax	$	249	$	157	$	43
Effective tax rate		(0.8)%		(0.4)%		(0.3)%
	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Current tax on result	$	249	$	139	$	61
Deferred tax prior years		—		18		—
Deferred tax current year		(7,264)		(9,679)		(3,921)
Movement valuation allowance		7,264		9,679		3,903
Total corporate tax expense	$	249	$	157	$	43

Unrecognized deferred tax assets

Deferred tax assets have not been recognized in respect of the following items, because it is not probable that future taxable profit will be available against which the Company can use the benefit therefrom.

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Deductible temporary differences	$	83,933	$	59,683	$	25,668
Tax losses		5,900		5,747		5,218
Total unrecognized deferred tax assets	$	89,833	$	65,429	$	30,886
Total tax effect 25.8% (2021/2020: 25%)	$	23,177	$	16,357	$	7,722

F-20

LAVA Therapeutics N.V.

Notes to consolidated financial statements

10. Earnings per share (EPS)

Basic EPS is calculated by dividing the profit/(loss) for the period attributable to common equity holders of the parent by the weighted average number of common shares outstanding during the period.

Diluted EPS is calculated by dividing the profit/(loss) attributable to common equity holders of the parent (after adjusting for the effect of dilution) by the weighted average number of common shares outstanding after adjustments for the effects of all dilutive potential common shares.

As of December 31, 2022, 2021 and 2020, outstanding share-based awards were excluded from the diluted weighted average number of common shares calculation because their effect would have been anti-dilutive.

The following table reflects the loss and share data used in the basic and diluted EPS calculations:

	For the Year Ended December 31,
(in thousands, except for share and per share amounts)	2022		2021		2020
Loss for the year	$	(31,907)	$	(42,355)	$	(15,927)
Weighted average number of common shares		25,924,005		19,758,169		399,126
Basic and diluted loss per share	$	(1.23)	$	(2.14)	$	(39.91)

11. Property and equipment

Movements in property and equipment were as follows:

	Building		Laboratory		Office		ICT
(in thousands)	improvements		equipment		equipment		equipment		Total
Cost
Balance at January 1, 2021	$	112	$	1,162	$	38	$	139	$	1,451
Additions		20		679		—		65		764
Foreign currency translation adjustment		(9)		(117)		(2)		(12)		(140)
Balance at December 31, 2021		123		1,724		36		192		2,075
Additions		—		525		6		56		587
Foreign currency translation adjustment		(6)		(108)		(2)		(10)		(126)
Balance at December 31, 2022	$	117	$	2,141	$	40	$	238	$	2,536
Accumulated depreciation
Balance at January 1, 2021	$	8	$	290	$	11	$	29	$	338
Charge for the year		12		280		8		31		331
Foreign currency translation adjustment		(1)		(32)		(3)		(3)		(39)
Balance at December 31, 2021		19		538		16		57		630
Charge for the year		87		366		8		43		504
Foreign currency translation adjustment		(1)		(26)		—		(3)		(30)
Balance at December 31, 2022	$	105	$	878	$	24	$	97	$	1,104
Carrying amounts
Property and equipment, net at December 31, 2021	$	104	$	1,186	$	20	$	135	$	1,445
Property and equipment, net at December 31, 2022	$	12	$	1,263	$	16	$	141	$	1,432

F-21

LAVA Therapeutics N.V.

Notes to consolidated financial statements

12. Leases

The following table provides information about the Company’s right-of-use assets:

(in thousands)
Balance at January 1, 2021	$	382
Additions		382
Depreciation charges		(227)
Foreign currency exchange difference		(36)
Balance at December 31, 2021		501
Additions		400
Depreciation charges		(277)
Foreign currency exchange difference		27
Balance at December 31, 2022	$	651

The following table provides information about the maturities of the Company’s lease liabilities at December 31, 2022:

(in thousands)
2023	$	459
2024		284
2025		206
2026		—
Total lease commitments		949
Less: imputed lease interest		(139)
Total lease liabilities	$	810
Current portion	$	379
Non-current portion	$	431

The average incremental borrowing rate applied to the lease liabilities was 15.69% and 15.78% during the years ended December 31, 2022 and 2021, respectively.

Cash outflows related to leases during the years ended December 31, 2022, 2021 and 2020 were $0.3 million, $0.3 million and $0.2 million, respectively.

Our leases consist of leases for office and laboratory space in the Netherlands and the U.S., expiring in 2025 and 2026. Both leases contain renewal options which we concluded are not reasonably certain to be exercised, and therefore did not include the effects of the extension options in the measurement of the lease liabilities and right-of-use assets. All leasehold improvements were paid for in full by us.

13. Investments

Our investments in debt securities consist of investments in U.S. Treasury securities, with maturities ranging from three months to one year. All of these investments are classified as held to maturity and recorded in current assets on our consolidated statements of financial position at amortized cost. As of December 31, 2022, the carrying value of our investments was $32.5 million, which approximates fair value. Given the high quality ratings of these investments in debt securities, we have not recorded an allowance for credit losses as of December 31, 2022.

F-22

LAVA Therapeutics N.V.

Notes to consolidated financial statements

14. Cash and cash equivalents

		As of December 31,
(in thousands)		2022		2021
Short-term deposits	$	9,965	$	76,504
Current bank accounts		90,368		14,365
	$	100,333	$	90,869

Short-term deposits are made for varying periods of between one day and three months, depending on the immediate cash requirements of the Company, and earn interest at the respective short-term deposit rates. Information about the credit risk over cash and cash equivalents is presented in Note 21.

15. Share capital, share premium and other capital reserves

The following table provides information about the Company’s share capital as of December 31, 2022, 2021 and 2020:

(in thousands, except	Authorized			Issued and fully paid			Additional paid-in capital				Share premium
for share and per	December 31,			December 31,			December 31,				December 31,
share amounts)	2022	2021	2020	2022	2021	2020	2022		2021		2020
Common shares of $0.01 each	—	—	447,525	—	—	281,775	$	—	$	—	$	—
Preference Series A shares of $0.01 each	—	—	1,755,845	—	—	1,037,595		—		—		722
Preference Series B shares of $0.01 each	—	—	3,899,766	—	—	3,899,766		—		—		18,340
Preference Series C shares of $0.01 each	—	—	4,133,805	—	—	4,133,805		—		—		22,026
Preference shares of $0.01 each	—	—	9,789,416	—	—	9,071,166		—		—		41,088
Preference shares of $0.14 each	45,000,000	45,000,000	—	—	—	—		—		—		—
Common shares of $0.14 each	45,000,000	45,000,000	—	26,289,087	25,775,538	—		194,424		192,270		—
	90,000,000	90,000,000	10,236,941	26,289,087	25,775,538	9,352,941	$	194,424	$	192,270	$	41,088

Preferred Series Shares

In 2017, the Company issued and sold 1,755,845 Series A Preferred at a price of $0.68 per share for gross proceeds of $1.2 million. The Company incurred minimal issuance costs.

In 2018, the Company issued and sold 3,899,766 Series B Preferred at a price of $4.61 per share for gross proceeds of $17.9 million. The Company incurred minimal issuance costs.

In 2020, the Company closed an oversubscribed financing of Series C Preferred that resulted in tranche-based commitments of $84.4 million gross and $73.2 million net. In connection with the Series C Preferred financing, the Company agreed to sell the Series C Preferred in three tranches. In connection with the funding of the tranches the Company was obligated to repurchase 1,436,500 shares of Series A preferred of approximately $10.3 million and 331,500 common shares.

In 2020, the first tranche of gross proceeds of $22.7 million, with $0.6 million of issuance costs and 4,133,805 shares of Series C Preferred, was funded, and 718,250 shares amounting to $4.9 million of Series A Preferred were repurchased, resulting in net proceeds of $17.2 million.

In 2021, the Company effected a 221:1 share split of the Company’s issued and outstanding common shares and a proportional adjustment to the existing conversion ratios for the Company’s convertible preferred shares. The par value per share and authorized common and convertible preferred shares were adjusted as a

F-23

LAVA Therapeutics N.V.

Notes to consolidated financial statements

result of the share split. All common shares and common share per share amounts within the financial statements and notes thereto have been adjusted for all periods presented to give effect to this share split, including reclassifying an amount equal to the change in par value of common shares to additional paid-in capital.

In 2021, the remaining milestones required to fund the remaining two tranches of the Series C Preferred financing were waived, and the funding of both tranches prior to the completion of the IPO was authorized. The two remaining tranches funded additional net proceeds of $56.6 million in the aggregate, after repurchasing the 718,250 shares of Series A Preferred and 165,750 common shares from one investor.

Automatic Conversion of Preferred Shares – In 2021, the Company effected an amendment to its Articles of Association, as amended. This amendment eliminated the minimum price per common share for an underwritten public offering that would result in the automatic conversion of all outstanding Series A, Series B, and Series C preferred shares of the Company.

Common shares

In 2021, the Company completed an IPO of common shares pursuant to its registration statement on Form F-1, as amended (file 333-253795) under the symbol “LVTX” in the United States on Nasdaq. Pursuant to the registration statement, the Company issued and sold 6,700,000 shares of $0.14 par value common share at a price of $15.00 per share. Net proceeds from the IPO were approximately $89.0 million after deducting underwriting discounts and commissions of $7.0 million and offering costs of $4.5 million.

In 2021, underwriters of the Company’s IPO consummated the exercise of their option to purchase 425,712 common shares from the Company at the price of $15.00 per share resulting in additional IPO proceeds to the Company of $5.9 million after deducting underwriting discounts and commissions of $0.4 million.

In 2021, the Company issued 235,664 common shares to VUmc representing the $3.7 million payable in accordance with the VUmc agreement.

In 2022, the Company issued 491,352 common shares to VUmc representing 50% of the payable in accordance with the VUmc agreement.

In 2022, the Company issued 22,197 common shares to former employees upon exercise of outstanding stock options.

The following table provides information about the Company’s major shareholders on a non-diluted basis:

	As of December 31,
	2022		2021
Gilde Healthcare	20.6	%	21.0	%
Versant Venture Capital VI, L.P.	17.5	%	17.8	%
Novo Holdings A/S	12.7	%	12.9	%
Redmile Biopharma Investments	10.6	%	10.8	%
Sanofi Foreign Participations B.V.	7.3	%	7.4	%
Ysios Capital Partners, SGECR,S.A.U.	—	%	6.2	%
Other shareholders	31.3	%	23.9	%
	100.0	%	100.0	%

F-24

LAVA Therapeutics N.V.

Notes to consolidated financial statements

16. Borrowings

				As of December 31,
				2022		2021
	Stated				Amount, incl.		Amount, incl.
	interest				accrued		accrued
(in thousands)	rate		Maturity		interest		interest
Innovation Credit	10,0	%	31/12/2023	$	4,640	$	4,284
Current				$	4,640	$	—
Non-current				$	—	$	4,284

In 2019, the Company applied for, and received a $5.5 million Innovation Credit (the “Credit”) from Rijksdienst voor Ondernemend Nederland (RVO). The Credit contributes to the development of one of the Company’s main projects, and certain assets of that project are pledged as a guarantee.

Borrowings under the Credit, which bear interest at 10.0%, will be received in quarterly installments through 2023, based on the level of the underlying cost base of the project in each period. The repayment of principal and accrued interest is due on December 31, 2023.

As of December 31, 2022 and 2021, the Company had $4.6 million and $4.3 million, respectively in borrowings under the Credit, all of which was classified as long-term, and includes accrued interest.

The Credit contains customary limitations on the Company and its shareholders, including the shareholders of the Company not being permitted to subtract assets (including cash) by means of dividend, interest, or repayment of loans as long as the Credit has not been repaid in full. The Company needs to file a progress report after each of the five reporting periods: March 2020, December 2020, December 2021, October 2022, and July 2023. The reporting dates for the last 3 reporting periods were extended with 18 months. Based on the progress report, RVO will decide to continue to pay future installments if the following conditions are met:

● Activities during reporting period were completed successfully

● Perspective on completion of the project and future commercialization are still good

● The Company has financed its own contribution in the project sufficiently

As of December 31, 2022, the Company was in compliance with all of the terms of the Credit.

Interest expense incurred from the Credit during the years ended December 31, 2022, 2021 and 2020 were $0.4 million, $0.3 million and $0.2 million, respectively.

17. Trade payables and other

The Company had accounts payable balances of $4.0 million and $2.6 million as of December 31, 2022 and 2021, respectively. The average credit period on domestic purchases of certain goods is 7-30 days. No interest is charged on the trade payables from the invoice received. Information about the Company’s exposure to currency and liquidity risk in relation to its trade and other payables is included in Note 21.

18. Accrued expenses and other current liabilities

		As of December 31,
(in thousands)		2022		2021
Research and development external project costs	$	5,399	$	983
Personnel-related expenses		1,903		161
Professional fees		486		425
Other		405		310
	$	8,193	$	1,879

F-25

LAVA Therapeutics N.V.

Notes to consolidated financial statements

19. Share-based compensation

19.1Description of equity incentive plans

In 2018, the Company established the 2018 Stock Option Plan that entitles employees, directors, and consultants providing services to purchase depository receipts for common shares of the Company. Under this plan, holders of vested options are entitled to purchase common shares at the exercise price determined at the date of the grant.

In 2020, the Company established the 2020 U.S. Stock Option Plan that entitles employees, directors and consultants providing services to give the right to acquire a number of common shares. Under this plan, holders of vested options are entitled to purchase common stock at the exercise price determined at the date of the grant.

In March 2021, LAVA Therapeutics N.V. established the 2021 Long-term Incentive Option Plan, as an incentive for all its employees, members of its board of directors and select external consultants. As of March 25, 2021, the 2018 Stock Option Plan and the 2020 U.S. Stock Option Plan ceased to have any future shares available.

Under the option plans, the options granted generally have a maximum term of 10 years and can generally have the following vesting schemes:

● 25% of the options vest on the first anniversary of the vesting commencement date, and the remaining 75% of the options vest in 36 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the fourth anniversary of the vesting commencement date.

● the options vest in 48 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the fourth anniversary of the vesting commencement date.

● the options vest in 12 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the first anniversary of the vesting commencement date.

Share-based options

During 2022 and 2021, the board of directors granted 2,358,458 options and 1,801,088 options, respectively.

The following table provides information about share-based awards as of December 31, 2022 and 2021:

	2018 Stock Option Plan			2020 U.S. Stock Option Plan			2021 Long-term Incentive Option Plan
			Weighted			Weighted			Weighted
		Weighted	average		Weighted	average		Weighted	average
	Number	average	remaining		average	remaining		average	remaining
	of	exercise	contractual	Number of	exercise	contractual	Number of	exercise	contractual
	options	price $	term (yrs)	options	price $	term (yrs)	options	price $	term (yrs)
Outstanding at January 1, 2021	620,347	0.01	(*)	1,069,198	2.76	9.50	—	—	—
Granted	—	—		493,938	12.69	9.21	1,307,150	6.03	9.90
Exercised	—	—		—	—		—	—
Forfeited	—	—		—	—		—	—
Outstanding at December 31, 2021	620,347	0.01	(*)	1,563,136	5.90	8.90	1,307,150	6.03	9.90
Granted	—	—		—	—		2,358,458	4.01	9.79
Exercised	(16,073)	0.01		(6,124)	2.76		—	—
Forfeited	(3,817)	0.01		(284,933)	13.46		(258,014)	5.75
Outstanding at December 31, 2022	600,457	0.01	(*)	1,272,079	4.22	7.83	3,407,594	4.66	9.54
Exercisable at December 31, 2022	387,565			717,532			470,454
(*) contract term does not have fixed end date

F-26

LAVA Therapeutics N.V.

Notes to consolidated financial statements

As of December 31, 2022, outstanding options had exercise prices ranging from $0.01 to $15.00.

19.2Measurement of fair values

The fair value of the equity-settled employee share options has been measured using the Black-Scholes formula, for all stock option grants issued after our IPO in March 2021. The service conditions attached to the transactions were not taken into account in measuring fair value.

The assumptions used in the measurement of the fair values and the weighted average fair value of the share options granted during the years ended on December 31, 2022, 2021 and 2020:

	December 31, 2022		December 31, 2021				December 31, 2020
	NL & US		NL		US		NL
Expected annual average volatility		83.9%		80.1%		80.1%		75.5% - 90.0%
Expected life, years		6.08		6.08		6.08		3.92
Fair value of the common share	$	1.71 - 3.91	$	3.42 - 5.23	$	3.12 - 8.71	$	2.10 - 2.76
Exercise price	$	2.34 - 5.50	$	5.10 - 7.77	$	5.10 - 15.00	$	0
Dividend yield		—		—		—		—
Risk-free interest rate		1.65% - 3.78%		(0.30%) - (0.53%)		0.94% - 1.34%		(0.62%)
Weighted average grant date fair value	$	4.01	$	3.61	$	5.95	$	2.71

In 2022, all options were granted in USD. In 2021, options were granted with a contractual exercise price in both EUR and USD. In 2020, all options were granted with a contractual exercise price in EUR. Since the Company was a private company until March 2021, limited company-specific historical and implied volatility information is available. Expected volatility is therefore estimated based on the observed daily share price returns of publicly traded peer companies over a historic period equal to the period for which expected volatility is estimated, as well as our own limited historical stock performance and our own stock-price volatility. The group of comparable listed companies are publicly traded entities active in the business of developing antibody-based therapeutics, treatments and drugs and are selected taking into consideration the availability of meaningful trading data history and market capitalization. The Company will continue to use this method for calculation of expected volatility data until sufficient historical market data is available for estimating the volatility of our common shares.

Total share-based compensation expenses for the years ended December 31, 2022, 2021 and 2020 were $4.1 million, $3.9 million and $0.6 million, respectively.

Valuation of common shares

As of our IPO in March 2021, the fair value of the common shares is determined by the market value of our shares on the Nasdaq Global Select Market under the symbol “LVTX.”

Prior to our IPO, the fair value of the common shares was determined by the Company’s management board and supervisory board and took into account the most recently available valuation of common shares performed by an independent valuation firm and the assessment of additional objective and subjective factors the Company believed were relevant and which may have changed from the date of the most recent valuation through the date of the grant.

The Company’s management board and supervisory board considered numerous objective and subjective factors to determine their best estimate of the fair value of our common shares as of each grant date, including:

• the progress of our research and development programs;

F-27

LAVA Therapeutics N.V.

Notes to consolidated financial statements

• achievement of enterprise milestones, including entering into collaboration and licensing agreements, as well as funding milestones;

• contemporaneous third-party valuations of our common shares for our most recent share issuances;

• our need for future financing to fund operations;

• the rights and preferences of our preference shares and our preference shares relative to our common shares;

• the likelihood of achieving a discrete liquidity event, such as a sale of our Company or an initial public offering given prevailing market conditions; and

• external market and economic conditions impacting our industry sector.

In determining the fair values of the common shares as of each grant date, three generally accepted approaches were considered: income approach, market approach and cost approach. In addition, the guidance prescribed by the American Institute of Certified Public Accounts Audit and Accounting Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation had been considered.

The “prior sale of company stock” method, a form of the market approach, had been applied to estimate the total enterprise value. The prior sale of company stock method considers any prior arm’s length sales of the Company’s equity securities. Considerations factored into the analysis included: the type and amount of equity sold, the estimated volatility, the estimated time to liquidity, the risk-free rate, the timing compared to the common shares valuation date and the financial condition and structure of the Company at the time of the sale. As such, the value per share had been benchmarked to the external transactions of Company stock and external financing rounds. For determining the value of the Company’s shares, the prior sale of company stock method had been relied on to estimate the total value of the Company’s equity. Throughout this period, financing rounds were held, which resulted in the issuance of preferred shares. The preferred shares were transacted with numerous existing and new investors, and therefore the pricing in these financing rounds was considered a strong indication of fair value.

Given that there were multiple classes of equity, the Option Pricing Method (OPM) had been applied in order to allocate equity to the various equity classes. The OPM treats securities as call options on the enterprise’s equity value, with exercise prices based on the liquidation preference and conversion features of preferred stock and strike prices of options. An incremental discount for lack of marketability (DLOM) was applied with a range from 10% to 25%, corresponding to the time to exit to reflect the increased risk arising from the inability to readily sell the shares. Under this method, the cost of the put option, which can hedge the price change before the privately held shares can be sold, was considered as the basis to determine the DLOM.

20. Related parties

Key management compensation

Key management includes members of the Company’s executive committee and the board of directors. The compensation paid or payable to key management for the Board and employee services includes their participation in share-based compensation arrangements. The compensation paid to these individuals is

F-28

LAVA Therapeutics N.V.

Notes to consolidated financial statements

presented below for the years ended December 31, 2022, 2021 and 2020. The disclosure amounts are based on the expense recognized in the consolidated statements of loss and other comprehensive loss.

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Key management compensation
Short term employee benefits	$	2,673	$	3,099	$	1,518
Share-based payments		1,994		2,702		310
Post-employment benefits		108		92		74
	$	4,775	$	5,893	$	1,902

Director and shareholder compensation

A member of the Company’s board of directors and existing shareholder received consultancy fees. The compensation paid to this individual is presented below for the years ended December 31, 2022, 2021, and 2020. As of December 31, 2022, 2021, and 2020, related party expenses of less than $0.1 million, respectively, were reported in the Company’s trade payables and other balances. The disclosure amounts are based on the expense recognized in the consolidated statements of loss and other comprehensive loss.

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Director and shareholder compensation
Board fees	$	320	$	227	$	—
Consultancy fees		—		20		55
	$	320	$	247	$	55

21. Financial instruments, risk management and capital management

21.1Financial assets and financial liabilities

The following table shows the carrying amounts of financial assets and financial liabilities. The Company does not hold any financial assets and financial liabilities other than those measured at amortized cost. Management assessed that the carrying values of the Company’s financial assets and financial liabilities measured at amortized cost are a reasonable approximation of their fair values.

21.2Financial risk management

		As of December 31,
(in thousands)	2022		2021
Financial assets measured at amortized cost
Cash and cash equivalents (Note 14)	$	100,333	$	90,869
Investments (Note 13)		32,535		42,334
Other non-current assets and security deposits		809		796
Receivables and other		3,254		363
Total financial assets	$	136,931	$	134,362
Financial liabilities measured at amortized cost
Borrowings (Note 16)	$	4,640	$	4,284
Trade payables and other (Note 17)		3,965		2,553
Accrued expenses and other current liabilities (Note 18)		8,193		1,879
Lease liabilities (Note 12)		810		581
Total financial liabilities	$	17,608	$	9,297

F-29

LAVA Therapeutics N.V.

Notes to consolidated financial statements

The Company is exposed to a variety of financial risks: market risk and credit risk. The Company’s overall risk management program seeks to minimize potential adverse effects of these financial risk factors on the Company’s financial performance.

21.2.1Market risk

Market risk is the risk that the fair value of future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risk, which mostly impacts the Company, comprises two types of risk: interest rate risk and currency risk. Financial instruments affected by market risk include cash, cash equivalents, investments, accounts receivable and trade and other payables. All of these financial instruments generally are short term in nature with maturities and settlement dates between one and 12 months.

The Company does not enter into any derivative financial instruments to manage its exposure to foreign currency risk and interest rate risk. During 2022, the foreign currency exchange rate between USD and EUR fluctuated throughout the year, with a 16.8% difference between the high and low rates, which had an impact on the results of our operations presented in USD, including foreign currency exchange gains of $2.9 million for the year ended December 31, 2022. Continued variations in exchange rates similar to this could have impacted our loss for the year by approximately $5.3 million as additional gain or loss. Due to the nature of our investment portfolio and other financial instruments, we do not believe an immediate 1.0% increase in interest rates would have a material effect on the fair market value of our portfolio, and accordingly we do not expect a sudden change in market interest rates to affect materially our operating results or cash flows.

21.2.2Credit risk

Cash and cash equivalents

The Company held cash and cash equivalents as of December 31, 2022 and 2021 of $100.3 million and $90.9 million, respectively.

Credit risk is the risk that a counterparty will not meet its obligations under a financial instrument or customer contract, leading to a financial loss. The Company is exposed to credit risk from its operating activities (primarily accounts receivable) and from its cash and cash equivalents held with three banks. Cash and cash equivalents, and short-term marketable securities are financial instruments that potentially subject the Company to concentrations of credit risk. As of December 31, 2022 and 2021, cash consists of cash

deposited with three financial institutions and account balances may exceed insured limits.

On March 10, 2023, Silicon Valley Bank, Santa Clara, California, or SVB, was closed by the California Department of Financial Protection and Innovation and the Federal Deposit Insurance Corporation, or FDIC, was appointed receiver. On March 26, 2023, First–Citizens Bank & Trust Company, Raleigh, North Carolina, or First Citizens, purchased all deposits and loans of SVB, and the former SVB reopened as First-Citizens Bank & Trust Company on Monday, March 27, 2023. We had a banking relationship with SVB, including $32.0 million as of December 31, 2022 held in Euros. Although most SVB depositors received full access to their funds on March 13, 2023, we had disrupted and delayed access to funds held in multi-currency accounts while the systems’ conversions were being completed to allow full–service banking, which has been resolved. As of March 31, 2023 we had $0.1 million of cash held at SVB as First-Citizens Bank & Trust Company. The majority of our cash is held at other banks that can be used to fund operations and believe the purchase of SVB’s assets by First Citizens will not have any material impact on our liquidity and capital resources.

Besides the above, management believes that the Company is not exposed to significant credit risk due to the financial strength of these institutions.

Investments

We invest our cash in accordance with a policy objective that seeks to ensure both liquidity and safety of principal. The policy limits investments to instruments issued by the U.S. government, certain SEC-registered

F-30

LAVA Therapeutics N.V.

Notes to consolidated financial statements

money market funds that invest only in U.S. government obligations and various other low-risk liquid investment options, and places restrictions on portfolio maturity terms. We do not believe our current investments give rise to a material credit risk.

21.3 Capital management

The Company manages its capital to ensure that the Company will be able to continue as a going concern while maximizing return to shareholders through the optimization of the debt and equity balance.

The capital structure of the Company consists of net debt (leases as detailed in Note 12 and borrowings as detailed in Note 16 offset by cash and cash equivalents) and equity (as detailed in the consolidated statements of financial position).

In order to achieve this overall objective, the Company’s capital management, among other things, aims to ensure that it meets financial covenants attached to the borrowings that define capital structure requirements.

No changes were made in the objectives, policies, or processes for managing capital during the year ended December 31, 2022.

21.4 Liquidity Risk

As of December 31, 2022, we held cash, cash equivalents and investments of $132.8 million which we believe is sufficient to service our current liabilities of $17.6 million, as well as fund our operations for at least the next 12 months. Refer to Note 2, “Going Concern” for additional information. We do not believe we are currently exposed to material liquidity risk as of December 31, 2022.

22. Commitments and Contingencies

Lease contract

In December 2021, the Company entered into a lease contract for laboratory and office space in Utrecht with a commencement date in February 2023. The lease agreement has an end date on March 31, 2026 and includes cancellation provisions. The total lease commitment under the agreement amounts to $1.7 million.

Legal proceedings

From time to time, the Company is involved in legal proceedings and adjudications generally incidental to its normal business activities, none of which has had, individually or in the aggregate, a material adverse impact on the Company. The Company accrues for loss contingencies when a present obligation (legal or constructive) has arisen as a result of a past event, payment is probable, and the amount can be estimated reliably. These estimates are based on an analysis made by internal and external legal counsel considering information known at the time. Legal costs in connection with loss contingencies are expensed as incurred. The Company believes that the resolution of any current legal matters will not have a material adverse impact on its financial position or results of operations.

Contingent liabilities

In January 2017, we entered into VUmc Agreement, as amended. Under the VUmc Agreement, VUmc granted us an exclusive, although non-exclusive with respect to certain intangible know-how, worldwide, sublicensable license under certain patent rights and know-how owned by VUmc, effectively including research and other services provided in collaboration by VUmc since 2017 to develop, make, and sell licensed products. VUmc retains the right to use the patent rights and know-how for solely non-commercial research and educational purposes, but it may not conduct such work with respect to any product that is directed to a specified target for a specified time period.

We are obligated to pay VUmc sub to low single-digit tiered royalties on net sales of products covered by claims included in the assigned patent rights. Royalties are payable on a country-by-country basis for a royalty term that expires upon the expiration of the last valid claim in the assigned patent rights in such

F-31

LAVA Therapeutics N.V.

Notes to consolidated financial statements

country that would be infringed by the use, manufacture, or sale of a product in such country in the absence of us having rights to such patent right. In connection with our IPO, we issued to VUmc 235,664 of our common share and paid $0.3 million in cash. On each of the first and second anniversary of our IPO, we are required to pay $4.7 million. Such payment shall be made in cash or common shares, at the election of the Company, valued using the closing price of common shares on the date two trading days prior to the respective anniversary of our IPO. In 2022, the Company issued 491,352 common shares to VUmc representing 50% of the payable in accordance with the VUmc agreement for the first anniversary payment. The final payment is due at the second anniversary of our IPO in March 2023. The Company and VUmc have been collaborating since 2017 and VUmc makes available certain employees to the Company who perform research activities for the benefit of the Company. In accordance with IFRS, these obligations are reflected in the accompanying consolidated statements of financial position.

23. Revision of Immaterial Misstatements

In connection with the preparation and review of the Company's consolidated interim and year-end financial statements for December 31, 2022, management identified certain immaterial misstatements in our historical financial statements related to the accounting for foreign currency exchange gains and losses associated with cash balances held in USD at LAVA Therapeutics, N.V. with a functional currency of Euro. We incorrectly computed and recorded the foreign exchange gain (loss) from our USD cash account in a Euro functional entity as foreign currency translation adjustment instead of foreign currency gain (loss). Management also identified certain immaterial misstatements in our historical financial statements primarily related to research and license revenue reported at the incorrect exchange rate and the accounting for share-based compensation expenses. We incorrectly computed and recorded the share-based compensation expenses due to an error in the calculation of the expense attribution over the vesting period, resulting in an incorrect and accelerated expense being recorded.

In accordance with the guidance set forth in Securities and Exchange Commission (SEC) Staff Accounting Bulletin (SAB) 99, Materiality, and SEC SAB 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financials, the Company concluded these misstatements were not material to the previously issued consolidated financial statements. We are revising our historical financial statements to revise the immaterial misstatements.

The revision for the foreign currency exchange and share-based compensation expense misstatements did not have an impact on total equity as of December 31, 2022, or any prior periods. As a result of the Company’s immaterial misstatements, net loss was overstated by $3.0 million, research and license revenue was understated by $0.4 million, operating expenses were overstated by $0.4 million and foreign currency exchange gain (loss), net was understated by $2.3 million for the year ended December 31, 2021 and net loss was understated by $0.4 million, research and license revenue was understated by $0.2 million and foreign currency exchange gain (loss), net was understated by $0.7 million for the year ended December 31, 2020. Also, as a result of a clerical error in presentation, our as reported foreign currency translation adjustment in the consolidated statement of loss and comprehensive loss was overstated by $3.2 million for the year ended December 31, 2021, this being the difference between the amount in the statement of total comprehensive loss and the amount in the statement of equity.

F-32

LAVA Therapeutics N.V.

Notes to consolidated financial statements

In the Consolidated Statements of Loss and Comprehensive Loss, we have revised the following:

	Year Ended
	December 31, 2021
	As reported			Adjustment	As revised
(in thousands)
Research and license revenue	$	5,000	$	350	$	5,350
Total revenue	$	5,000	$	350	$	5,350
Research and development expenses	$	(37,193)	$	248	$	(36,945)
General and administrative expenses	$	(12,160)	$	142	$	(12,018)
Total operating expenses	$	(49,353)	$	390	$	(48,963)
Operating loss	$	(44,353)	$	740	$	(43,613)
Foreign currency exchange gain (loss), net	$	(212)	$	2,252	$	2,040
Total non-operating income (loss)	$	(837)	$	2,252	$	1,415
Loss before income tax	$	(45,190)	$	2,992	$	(42,198)
Loss for the year	$	(45,347)	$	2,992	$	(42,355)
Foreign currency translation adjustment	$	(6,210)	$	568	$	(5,642)
Total comprehensive loss	$	(51,557)	$	3,560	$	(47,997)
	Year Ended
	December 31, 2020
	As reported			Adjustment	As revised
(in thousands)
Research and license revenue	$	3,500	$	247	$	3,747
Total revenue	$	3,500	$	247	$	3,747
Operating loss	$	(14,920)	$	247	$	(14,673)
Foreign currency exchange gain (loss), net	$	(201)	$	(668)	$	(869)
Total non-operating income (loss)	$	(543)	$	(668)	$	(1,211)
Loss before income tax	$	(15,463)	$	(421)	$	(15,884)
Loss for the year	$	(15,506)	$	(421)	$	(15,927)
Foreign currency translation adjustment	$	(577)	$	375	$	(202)
Total comprehensive loss	$	(16,083)	$	(46)	$	(16,129)

In the Consolidated Statements of Financial Position and Changes in Equity, we have revised the following:

	December 31, 2021						December 31, 2020
	As reported			Adjustment	As revised		As reported			Adjustment	As revised
(in thousands)
Equity-settled employee benefits reserve	$	5,219		(390)		4,829		922		—		922
Foreign currency translation reserve	$	(4,042)	$	(2,181)	$	(6,223)	$	(1,003)	$	421	$	(581)
Accumulated deficit	$	(78,733)	$	2,571	$	(76,162)	$	(33,386)	$	(421)	$	(33,807)
Equity:	$	118,367	$	—	$	118,367	$	7,622	$	—	$	7,622

F-33

LAVA Therapeutics N.V.

Notes to consolidated financial statements

In the Consolidated Statements of Cash Flows, we have revised the following:

	Year Ended
	December 31, 2021
	As reported			Adjustment	As revised
(in thousands)
Loss before income tax	$	(45,190)	$	2,992	$	(42,198)
Foreign currency exchange gain (loss), net	$	562	$	(2,602)	$	(2,040)
Share-based compensation expense	$	4,297	$	(390)	$	3,907
Cash and cash equivalents at end of year	$	90,869	$	—	$	90,869
	Year Ended
	December 31, 2020
	As reported			Adjustment	As revised
(in thousands)
Loss before income tax	$	(15,463)	$	(421)	$	(15,884)
Foreign currency exchange gain (loss), net	$	448	$	421	$	869
Cash and cash equivalents at end of year	$	15,818	$	—	$	15,818

F-34

Item 18: Financial Statements

Not applicable.

Item 19: Exhibits

		Incorporation by Reference
Exhibit number	Description of Document	Form	Exhibit	File Date	File Number
1.1	English translation of Articles of Association of LAVA Therapeutics N.V.	Form F-1/A	3.2	3/18/2021	333-253795
2.1*	Description of Securities
4.1Ù	Restated and Amended License and Assignment Agreement, dates as of February 25, 2021 by and among LAVA Therapeutics B.V. and Stichting VUmc.	Form F-1	10.1	3/2/2021	333-253795
4.2Ù	Research Collaboration and License Agreement, dated as of May 13, 2020, by and among Lava Therapeutics, B.V., and Janssen Biotech, Inc.	Form F-1	10.2	3/2/2021	333-253795
4.3+	Exclusive License Agreement, dated as of September 23, 2022, by and between LAVA Therapeutics, Inc. and Seagen, Inc.	Form 6-K	10.1	9/30/2022	001-40241
4.4*+	Clinical Supply Agreement, dated as of January 27, 2023, by and between LAVA Therapeutics, Inc. and Seagen, Inc.
4.5#	Form of Indemnification Agreement for executive directors and executive officers.	Form F-1/A	10.3	3/18/2021	333-253795
4.6#	Form of Indemnification Agreement for non-executive directors.	Form F-1/A	10.4	3/18/2021	333-253795
4.7#	2018 Stock Option Plan.	Form F-1/A	10.5	3/18/2021	333-253795
4.8#	2020 U.S. Stock Option Plan.	Form F-1/A	10.6	3/18/2021	333-253795
4.9#	2021 Long Term Incentive Plan and form of Award Agreement.	Form F-1/A	10.7	3/18/2021	333-253795

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4.10#	2021 Employee Share Purchase Plan	Form F-1/A	10.8	3/18/2021	333-253795
8.1*	Subsidiaries of the Registrant.	Form 20-F	8.1	3/24/2022	001-40241
12.1*	Certification of Principal Executive Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
12.2*	Certification of Principal Financial Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
13.1*†	Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
13.2*†	Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
15.1*	Consent of Independent Registered Public Accounting Firm
101.INS*	Inline XBRL Instance Document.
101.SCH*	Inline XBRL Taxonomy Extension Schema Document.
101.CAL*	Inline XBRL Taxonomy Calculation Linkbase Document.
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB*	Inline XBRL Taxonomy Label Linkbase Document.
101.PRE*	Inline XBRL Taxonomy Presentation Linkbase Document.

123

104 Cover Page Interactive Data File (the cover page iXBRL tags are embedded within the Inline XBRL document)

* Filed herewith

# Indicates a management contract or compensatory plan, contract or arrangement

^Ù Confidential treatment has been requested for portions of this agreement

+ Certain confidential information in this exhibit has been omitted and replaced with “[***]” because it is not material and is information that the company treats as private or confidential

† These certifications are being furnished solely to accompany this annual report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not to be incorporated by reference into any filing of the registrant, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

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SIGNATURES

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

LAVA Therapeutics N.V.

(Registrant)

/s/ Fred Powell

Fred Powell

Chief Financial Officer

Date: April 11, 2023

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EX-2.1

EXHIBIT 2.1

Description of the Registrant’s Securities Registered Pursuant to Section 12
of the Securities Exchange Act of 1934

As of December 31, 2022, LAVA Therapeutics N.V. (the “Company,” “we,” “us,” or “LAVA”) had one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended: our common shares.

The following description does not purport to be complete and is subject to the Company’s articles of association, a copy of which has been filed as an exhibit to the Company’s Annual Report on Form 20-F of which this Exhibit 2.1 is a part, and is subject to provisions of applicable Dutch law.

General

We were incorporated under the laws of the Netherlands on February 15, 2016, as a private company with limited liability (besloten vennootschap met beperkte aansprakelijkheid), and, upon consummation of our initial public offering in March 2021, converted into a Dutch public company with limited liability (naamloze vennootschap). Our principal executive offices are located at Yalelaan 62, 3584 CM Utrecht, the Netherlands. Our telephone number at this address is +31 6 3000 3035.

Share capital

As of March 15, 2023, we have an issued share capital in the amount of $3.1 million (€3.2 million), divided into 26,289,087 common shares, each with a nominal value of $0.14 (€0.12).

Under Dutch law, our authorized share capital is the maximum capital that we may issue without amending our articles of association. An amendment of our articles of association would require a resolution of the general meeting upon proposal by our board of directors. Our authorized share capital as of March 15, 2023 is divided into 45,000,000 common shares and 45,000,000 preferred shares, each with a nominal value of $0.14 (€0.12).

Our common shares are listed on The Nasdaq Global Select Market under the symbol “LVTX.”

Common shares

Our common shares shall be in registered form (op naam). We may issue share certificates (aandeelbewijzen) for registered shares in such form as may be approved by our board of directors. The following summarizes the main rights of holders of our common shares:

• each holder of common shares is entitled to one vote per share on all matters to be voted on by shareholders generally, including the appointment of directors;

• there are no cumulative voting rights;

• the holders of our common shares are entitled to dividends and other distributions as may be declared from time to time by us out of funds legally available for that purpose, if any, following payment of the preferred dividend if any preferred shares are or have been outstanding (to the extent holders or former holders of preferred shares are entitled to such distribution under our articles of association);

• upon our liquidation and dissolution, the holders of common shares will be entitled to share ratably in the distribution of all of our assets remaining available for distribution after satisfaction of all our liabilities, following payment of the preferred dividend if any preferred shares are or have been outstanding (to the extent holders or former holders of preferred shares are entitled to such distribution under our articles of association); and

• the holders of our common shares have pre-emption rights in case of share issuances or the grant of rights to subscribe for shares, except if such rights are limited or excluded by the corporate body authorized to do so and except in such cases as provided by Dutch law and our articles of association.

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Corporate objectives

Pursuant to the articles of association, our main corporate objectives are:

• to, either individually or jointly or with other entities, engage in cellular therapy, immunotherapy and other oncological therapies and the fight against cancer (cells), as well as the development of products, intellectual property, the acquiring thereof and to register patentable findings and the performing of medical, commercial and industrial activities in the widest sense of the word;

• to incorporate, to participate in, to finance, to hold any other interest in and to conduct the management or supervision of other entities, companies, partnerships and businesses;

• to acquire, to manage, to invest, to exploit, to encumber and to dispose of assets and liabilities;

• to furnish guarantees, to provide security, to warrant performance in any other way and to assume liability, whether jointly and severally or otherwise, in respect of obligations of group companies or other parties; and

• to do anything which, in the widest sense, is connected with or may be conducive to the objectives described above.

Issuance of shares

Under Dutch law, a company’s general meeting is the corporate body authorized to resolve on the issuance of shares and the granting of rights to subscribe for shares. The general meeting can delegate such authority to another corporate body of the company for a period not exceeding five years; this authorization may only be extended from time to time for a maximum period of five years. On March 25, 2021, our general meeting adopted a resolution pursuant to which our board of directors is authorized, for a period of five years following March 25, 2021, to issue shares or grant rights to subscribe for shares up to our authorized share capital from time to time. We may not subscribe for our own shares on issue.

Preemptive Rights

Under Dutch law, in the event of an issuance of shares, each shareholder will have a pro rata preemption right in proportion to the aggregate nominal value of the shares held by such holder (except in case of an issue of shares to employees, against a contribution other than in cash or pursuant to the exercise of a previously acquired right to subscribe for shares). Under our articles of association, the preemption rights in respect of newly issued shares may be restricted or excluded by a resolution of the general meeting. Another corporate body may restrict or exclude the preemption rights in respect of newly issued shares if it has been designated as the authorized body to do so by the general meeting. Such designation can be granted for a period not exceeding five years. A resolution of the general meeting to restrict or exclude the preemption rights or to designate another corporate body as the authorized body to do so requires a majority of not less than two-thirds of the votes cast, if less than one-half of our issued share capital is represented at the meeting. On March 25, 2021, our general meeting authorized our board of directors, for a period of five years following March 25, 2021 to limit or exclude preemption rights in relation to an issuance of shares or a grant of rights to subscribe for shares that the board of directors is authorized to resolve upon.

Repurchase of shares

Under Dutch law, when issuing shares, a public company such as ours may not subscribe for newly issued shares in its own capital. Such company may, however, subject to certain restrictions of Dutch law and its articles of association, acquire shares in its own capital. A listed public company such as ours may acquire fully paid shares in its own capital at any time for no valuable consideration. Furthermore, subject to certain provisions of Dutch law and its articles of association, such company may repurchase fully paid shares in its own capital if (i) the company’s shareholders’ equity (eigen vermogen) less the payment required to make the acquisition does not fall below the sum of paid-in and called-up share capital plus

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any reserves required by Dutch law or its articles of association and (ii) the aggregate nominal value of shares of the company which the company acquires, holds or on which the company holds a pledge (pandrecht) or which are held by a subsidiary of the company, would not exceed 50% of its then-current issued share capital.

An acquisition by us of shares in our capital for a consideration must be authorized by our general meeting. Such authorization may be granted for a maximum period of 18 months and must specify the number of shares that may be acquired, the manner in which shares may be acquired and the price limits within which shares may be acquired. The actual acquisition may only be effected pursuant to a resolution of our board of directors. Pursuant to a resolution adopted at our general meeting on June 15, 2022, our board of directors was authorized for a period of 18 months to cause the repurchase of shares (or depository receipts for shares) by us of up to 10% of our issued share capital, for a price per share not exceeding 110% of the average market price of our common shares on Nasdaq (such average market price being the average of the closing prices on each of the five consecutive trading days preceding the date the acquisition is agreed upon by us), provided that, until our common shares are listed on a stock exchange, the maximum purchase price shall be 110% of the original issue price of the shares concerned.

No authorization of the general meeting is required if fully paid common shares are acquired by us with the intention of transferring such common shares to our employees under an applicable employee share purchase plan.

Limitations on the rights to own securities

Our common shares may be issued to individuals, corporations, trusts, estates of deceased individuals, partnerships and unincorporated associations of persons. Our articles of association contain no limitation on the rights to own our shares and no limitation on the rights of non-residents of the Netherlands or foreign shareholders to hold or exercise voting rights. It is our intention that our preferred shares shall only be issued to the protective foundation, if and when incorporated.

Limitation on liability and indemnification matters

Under Dutch law, our directors may be held liable for damages in the event of improper or negligent performance of their duties. They may be held jointly and severally liable for damages to our company and to third parties for infringement of our articles of association or of certain provisions of Dutch law. In certain circumstances, they may also incur additional specific civil and criminal liabilities. Subject to certain exceptions, our articles of association provide for indemnification of our current and former directors and other current and former officers and employees as designated by our board of directors. No indemnification under our articles of association shall be given to an indemnified person:

• if a competent court or arbitral tribunal has established, without having (or no longer having) the possibility for appeal, that the acts or omissions of such indemnified person that led to the financial losses, damages, expenses, suit, claim, action or legal proceedings as described above are of an unlawful nature (including acts or omissions which are considered to constitute malice, gross negligence, intentional recklessness and/or serious culpability attributable to such indemnified person);

• to the extent that his or her financial losses, damages and expenses are covered under insurance and the relevant insurer has settled, or has provided reimbursement for, these financial losses, damages and expenses (or has irrevocably undertaken to do so);

• in relation to proceedings brought by such indemnified person against our company, except for proceedings brought to enforce indemnification to which he is entitled pursuant to our articles of association, pursuant to an agreement between such indemnified person and our company which has been approved by our board of directors or pursuant to insurance taken out by our company for the benefit of such indemnified person; and

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• for any financial losses, damages or expenses incurred in connection with a settlement of any proceedings effected without our prior consent.

Under our articles of association, our board of directors may stipulate additional terms, conditions and restrictions in relation to the indemnification described above.

Shareholders’ meetings

General meetings may be held in Amsterdam, Arnhem, Assen, The Hague, Haarlem, ‘s-Hertogenbosch, Groningen, Leeuwarden, Lelystad, Maastricht, Middelburg, Rotterdam, Schiphol (Haarlemmermeer), Utrecht or Zwolle, all in the Netherlands. The annual general meeting must be held within six months of the end of each financial year. Additional extraordinary general meetings may also be held, whenever considered appropriate by our board of directors and shall be held within three months after our board of directors has considered it to be likely that our shareholders’ equity (eigen vermogen) has decreased to an amount equal to or lower than half of our paid-in and called up share capital, in order to discuss the measures to be taken if so required.

Pursuant to Dutch law, one or more shareholders or others with meeting rights under Dutch law who jointly represent at least one-tenth of our issued share capital may request us to convene a general meeting, setting out in detail the matters to be discussed. If we have not taken the steps necessary to ensure that such meeting can be held within six weeks after the request, the proponent(s) may, on their application, be authorized by the competent Dutch court in preliminary relief proceedings to convene a general meeting. The court shall disallow the application if it does not appear that the proponent(s) has/have previously requested our board of directors to convene a general meeting and our board of directors has not taken the necessary steps so that the general meeting could be held within six weeks after the request.

General meetings must be convened by an announcement published in a Dutch daily newspaper with national distribution. The notice must state the agenda, the time and place of the meeting, the record date (if any), the procedure for participating in the general meeting by proxy, as well as other information as required by Dutch law. The notice must be given at least 15 calendar days prior to the day of the meeting. The agenda for the annual general meeting shall include, among other things, the adoption of our statutory annual accounts, appropriation of our profits and proposals relating to the composition of the board of directors, including the filling of any vacancies. In addition, the agenda shall include such items as have been included therein by our board of directors. The agenda shall also include such items requested by one or more shareholders or others with meeting rights under Dutch law representing at least 3% of our issued share capital. These requests must be made in writing or by electronic means and received by us at least 60 days before the day of the meeting. No resolutions shall be adopted on items other than those that have been included in the agenda.

In accordance with the DCGC and our articles of association, shareholders having the right to put an item on the agenda under the rules described above shall exercise such right only after consulting the board of directors in that respect. If one or more shareholders intend to request that an item be put on the agenda that may result in a change in our strategy (for example, the dismissal of directors), our board of directors must be given the opportunity to invoke a reasonable period to respond to such intention. Such period shall not exceed 180 days (or such other period as may be stipulated for such purpose by Dutch law and/or the DCGC from time to time). If invoked, our board of directors must use such response period for further deliberation and constructive consultation, in any event with the shareholder(s) concerned, and shall explore the alternatives. At the end of the response time, our board of directors shall report on this consultation and the exploration of alternatives to the general meeting. The response period may be invoked only once for any given general meeting and shall not apply: (a) in respect of a matter for which either a response period or a statutory cooling-off period (as discussed below) has been previously invoked; or (b) if a shareholder holds at least 75% of our issued share capital as a consequence of a successful public bid. The response period may also be invoked in response to shareholders or others with meeting rights under Dutch law requesting that a general meeting be convened, as described above.

Moreover, our board of directors can invoke a cooling-off period of up to 250 days when shareholders, using their right to have items added to the agenda for a general meeting or their right to request a

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general meeting, propose an agenda item for our general meeting to dismiss, suspend or appoint one or more directors (or to amend any provision in our articles of association dealing with those matters) or when a public offer for our company is made or announced without our support, provided, in each case, that our board of directors believes that such proposal or offer materially conflicts with the interests of our company and its business. During a cooling-off period, our general meeting cannot dismiss, suspend or appoint directors (or amend the provisions in our articles of association dealing with those matters) except at the proposal of our board of directors. During a cooling-off period, our board of directors must gather all relevant information necessary for a careful decision-making process and at least consult with shareholders representing 3% or more of our issued share capital at the time the cooling-off period was invoked, as well as with our Dutch works council. Formal statements expressed by these stakeholders during such consultations must be published on our website to the extent these stakeholders have approved that publication. Ultimately one week following the last day of the cooling-off period, our board of directors must publish a report in respect of its policy and conduct of affairs during the cooling-off period on our website. This report must remain available for inspection by shareholders and others with meeting rights under Dutch law at our office and must be tabled for discussion at the next general meeting. Shareholders representing at least 3% of our issued share capital may request the Enterprise Chamber for early termination of the cooling-off period. The Enterprise Chamber must rule in favor of the request if the shareholders can demonstrate that:

● our board of directors, in light of the circumstances at hand when the cooling-off period was invoked, could not reasonably have concluded that the relevant proposal or hostile offer constituted a material conflict with the interests of our company and its business;

● our board of directors cannot reasonably believe that a continuation of the cooling-off period would contribute to careful policy-making; or

● other defensive measures, having the same purpose, nature and scope as the cooling-off period, have been activated during the cooling-off period and have not since been terminated or suspended within a reasonable period at the relevant shareholders’ request (i.e., no ‘stacking’ of defensive measures).

The general meeting is presided over by the chairperson of our board of directors. If no chairperson has been elected or if he or she is not present at the meeting, the general meeting shall be presided over by the vice-chairperson of our board of directors. If no vice-chairperson has been elected or if he or she is not present at the meeting, the general meeting shall be presided over by a person designated in accordance with our articles of association. Directors may always attend a general meeting. In these meetings, they have an advisory vote. The chairperson of the meeting may decide at his or her discretion to admit other persons to the meeting.

All shareholders and others with meeting rights under Dutch law are authorized to attend the general meeting, to address the meeting and, in so far as they have such right, to vote pro rata to his or her shareholding. Shareholders may exercise these rights, if they are the holders of shares on the record date, if any, as required by Dutch law, which is currently the 28th day before the day of the general meeting. Under our articles of association, shareholders and others with meeting rights under Dutch law must notify us in writing or by electronic means of their identity and intention to attend the general meeting. This notice must be received by us ultimately on the seventh day prior to the general meeting, unless indicated otherwise when such meeting is convened.

Quorum and Voting Requirements

Each common and each preferred share, if any are outstanding, share confers the right on the holder to cast one vote at the general meeting. Shareholders may vote by proxy. No votes may be cast at a general meeting on shares held by us or our subsidiaries or on shares for which we or our subsidiaries hold depository receipts. Nonetheless, the holders of a usufruct (vruchtgebruik) and the holders of a right of pledge (pandrecht) in respect of shares held by us or our subsidiaries in our share capital are not excluded from the right to vote on such shares, if the usufruct (vruchtgebruik) or the right of pledge (pandrecht) was granted prior to the time such shares were acquired by us or any of our subsidiaries. Neither we nor any of our subsidiaries may cast votes in respect of a share on which we or such subsidiary holds a usufruct (vruchtgebruik) or a right of pledge (pandrecht). Shares which are not entitled to voting rights pursuant to the preceding sentences will not be taken into account for the purpose of

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determining the number of shareholders that vote and that are present or represented, or the amount of the share capital that is provided or that is represented at a general meeting.

Decisions of the general meeting are taken by a simple majority of votes cast, except where Dutch law or our articles of association provide for a qualified majority or unanimity and/or a quorum.

Shareholder vote on certain reorganizations

Under Dutch law, the general meeting must approve resolutions of the board of directors relating to a significant change in the identity or the character of the company or the business of the company, which includes:

● a transfer of the business or virtually the entire business to a third-party;

● the entry into or termination of a long-term cooperation of the company or a subsidiary with another legal entity or company or as a fully liable partner in a limited partnership or general partnership, if such cooperation or termination is of a far-reaching significance for the company; and

● the acquisition or divestment by the company or a subsidiary of a participating interest in the capital of a company having a value of at least one-third of the amount of its assets according to its balance sheet and explanatory notes or, if the company prepares a consolidated balance sheet, according to its consolidated balance sheet and explanatory notes in the last adopted annual accounts of the company.

The absence of such approval shall result in the relevant resolution being null and void but shall not affect the powers of representation of the board of directors or of the directors vis-à-vis third parties.

Directors

Appointment of directors

Our directors will be appointed by the general meeting upon binding nomination by our board of directors. However, the general meeting may at all times overrule a binding nomination by a resolution adopted by at least a two-thirds majority of the votes cast, provided such majority represents more than half of the issued share capital. If the general meeting overrules a binding nomination, the board of directors has the exclusive right to make a new nomination.

Our board of directors has adopted a diversity policy for the composition of our board of directors, as well as a profile for the composition of our board of directors. The board of directors shall make any nomination for the appointment of a director with due regard to the rules and principles set forth in such diversity policy and profile, as applicable.

At a general meeting, a resolution to appoint a director can only be passed in respect of candidates whose names are stated for that purpose in the agenda of that general meeting or in the explanatory notes thereto.

Duties and liabilities of directors

Under Dutch law, the board of directors is charged with the management of the company, subject to the restrictions contained in our articles of association. Our executive directors manage our day-to-day business and operations and implement our strategy. Our non-executive directors focus on the supervision on the policy and functioning of the performance of the duties of all of our directors and our general state of affairs. The directors may divide their tasks among themselves in or pursuant to internal rules and in accordance with Dutch law. Each director has a statutory duty to act in the corporate interest of our company and its business. Under Dutch law, the corporate interest extends to the interests of all corporate stakeholders, such as shareholders, creditors, employees, customers and suppliers. The duty to act in the corporate interest of our company also applies in the event of a proposed sale or break-up of our company, provided that the circumstances generally dictate how such duty is to be applied and how the respective interests of various groups of stakeholders should be weighed.

Our board of directors is entitled to represent our company. The power to represent our company also vests in our Chief Executive Officer acting individually or any two other executive directors acting jointly.

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Dividends and other distributions

Under Dutch law, we may only pay dividends and other distributions from our reserves to the extent our shareholders’ equity (eigen vermogen) exceeds the sum of our paid-in and called-up share capital plus the reserves we must maintain under Dutch law or our articles of association and (if it concerns a distribution of profits) after adoption of our statutory annual accounts by our general meeting from which it appears that such dividend distribution is allowed.

Under our articles of association, if any preferred shares are or have been outstanding, a dividend is first paid out of our profits, if available for distribution, to the holders or former holders, as applicable, of those preferred shares to the extent they are entitled to such distribution under our articles of association, which we refer to as our preferred dividend. Thereafter, our board of directors, may decide that all or part of the remaining profits shown in our adopted statutory annual accounts will be added to our reserves. After reservation of any such profits, any remaining profits will be at the disposal of the general meeting at the proposal of our board of directors for distribution on our common shares, subject to applicable restrictions of Dutch law as set out in the previous paragraph. Our board of directors, is permitted, subject to certain requirements and applicable restrictions of Dutch law, to declare interim dividends without the approval of our general meeting. Dividends and other distributions shall be made payable no later than a date determined by us. Claims to dividends and other distributions not made within five years from the date that such dividends or distributions became payable will lapse and any such amounts will be considered to have been forfeited to us (verjaring).

Exchange controls

Under Dutch law, there are no exchange controls applicable to the transfer to persons outside of the Netherlands of dividends or other distributions with respect to, or of the proceeds from the sale of, shares of a Dutch company, subject to applicable restrictions under sanctions and measures, including those concerning export control, pursuant to European Union regulations, the Sanctions Act 1977 (Sanctiewet 1977) or other legislation, applicable anti-boycott regulations, applicable anti-money-laundering regulations and similar rules. There are no special restrictions in our articles of association or Dutch law that limit the right of shareholders who are not citizens or residents of the Netherlands to hold or vote shares.

Squeeze out procedures

A shareholder who holds at least 95% of our issued share capital for his or her own account, alone or together with group companies, may initiate proceedings against our other shareholders jointly for the transfer of their shares to such shareholder. The proceedings are held before the Enterprise Chamber of the Amsterdam Court of Appeal, or the Enterprise Chamber (Ondernemingskamer), and can be instituted by means of a writ of summons served upon each of the other shareholders in accordance with the provisions of the Dutch Code of Civil Procedure (Wetboek van Burgerlijke Rechtsvordering). The Enterprise Chamber may grant the claim for squeeze-out in relation to the other shareholders and will determine the price to be paid for the shares, if necessary, after appointment of one or three experts who will offer an opinion to the Enterprise Chamber on the value to be paid for the shares of the other shareholders. Once the order to transfer becomes final before the Enterprise Chamber, the person acquiring the shares shall give written notice of the date and place of payment and the price to the holders of the shares to be acquired whose addresses are known to him. Unless the addresses of all of them are known to the acquiring person, such person is required to publish the same in a Dutch daily newspaper with a national circulation.

Anti-takeover provisions

Under Dutch law, various protective measures are possible and permissible within the boundaries set by Dutch law and Dutch case law. Certain provisions of our articles of association also may make it more difficult for a third-party to acquire control of us or effect a change in the composition of our board of directors. These include:

● the authorization of a class of preferred shares that may be issued to a protective foundation, in such a manner as to dilute the interest of any potential acquirer or shareholder activist;

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● a provision that our directors are appointed on the basis of a binding nomination prepared by our Board which can only be overruled by a two-thirds majority of votes cast representing more than half of our issued share capital;

● a provision that our directors may only be dismissed by the general meeting by a two-thirds majority of votes cast representing more than half of our issued share capital, unless the dismissal is proposed by our board of directors in which latter case a simple majority of the votes cast would be sufficient;

● a provision allowing, among other matters, the former chairperson of our board of directors or our former Chief Executive Officer to manage our affairs if all of our directors are dismissed and to appoint others to be charged with our affairs, including the preparation of a binding nomination for directors as discussed above, until new directors are appointed by the general meeting on the basis of such binding nomination; and

● a requirement that certain matters, including an amendment of our articles of association, may only be resolved upon by our general meeting if proposed by our board of directors.

Dutch law also allows for staggered multi-year terms of our directors, as a result of which only part of our directors may be subject to appointment or re-appointment in any given year.

Furthermore, our board of directors may, under certain circumstances invoke a reasonable period of up to 180 days to respond to certain shareholder proposals or a statutory cooling-off period of up to 250 days to respond to certain shareholder proposals or a hostile bid. See above under "Shareholders' meetings."

Dissolution and liquidation

Under our articles of association, we may be dissolved by a resolution of the general meeting, subject to a proposal of our board of directors. In the event of a dissolution, the liquidation shall be effected by our board of directors, unless the general meeting decides otherwise. During liquidation, the provisions of our articles of association will remain in force as far as possible. To the extent that any assets remain after payment of all of our liabilities, if any preferred shares are or have been outstanding, a liquidation distribution equal to the preferred dividend is first paid out to the holders or former holders of those preferred shares (to the extent they are entitled to such distribution under our articles of association). Thereafter, any remaining assets shall be distributed to our shareholders in proportion to their number of shares.

Comparison of Dutch corporate law and our articles of association and U.S. corporate law

The following comparison between Dutch corporate law, which applies to us, and Delaware corporation law, the law under which many publicly listed corporations in the United States are incorporated, discusses additional matters not otherwise described in this prospectus. Although we believe this summary is materially accurate, the summary is subject to Dutch law, including Book 2 of the Dutch Civil Code and the DCGC and Delaware corporation law, including the Delaware General Corporation Law.

Corporate governance

Duties of directors

The Netherlands.    We will have a one-tier board structure consisting of a board of directors consisting of executive and non-executive directors.

Under Dutch law, the board of directors is charged with the management of the company, subject to the restrictions contained in our articles of association. Our executive directors manage our day-to-day business and operations and implement our strategy. Our non-executive directors focus on the supervision on the policy and functioning of the performance of the duties of all of our directors and our general state of affairs. The directors may divide their tasks among themselves in or pursuant to internal rules and in accordance with Dutch law. Each director has a statutory duty to act in the corporate interest of our company and its business. Under Dutch law, the corporate interest extends to the interests of all corporate stakeholders, such as shareholders, creditors, employees, customers and suppliers. The duty to act in the corporate interest of our company also applies in the event of a proposed sale or break-up of

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our company, provided that the circumstances generally dictate how such duty is to be applied and how the respective interests of various groups of stakeholders should be weighed.

Any resolution of our board of directors regarding a material change in our identity or character requires approval of the general meeting. The absence of the approval of the general meeting shall result in the relevant resolution being null and void but shall not affect the powers of representation of the board or of the directors vis-à-vis third parties.

Our board of directors is entitled to represent our company. The power to represent our company also vests in our Chief Executive Officer acting individually or any two other directors acting jointly.

Delaware.    The board of directors bears the ultimate responsibility for managing the business and affairs of a corporation. In discharging this function, directors of a Delaware corporation owe fiduciary duties of care and loyalty to the corporation and to its stockholders. Delaware courts have decided that the directors of a Delaware corporation are required to exercise informed business judgment in the performance of their duties. Informed business judgment means that the directors have informed themselves of all material information reasonably available to them. Delaware courts have also imposed a heightened standard of conduct upon directors of a Delaware corporation who take any action designed to defeat a threatened change in control of the corporation. In addition, under Delaware law, when the board of directors of a Delaware corporation approves the sale or break-up of a corporation, the board of directors may, in certain circumstances, have a duty to obtain the highest value reasonably available to the stockholders.

Director terms

The Netherlands.    The DCGC provides the following best practice recommendations on the terms for tenure of directors:

• executive directors should be appointed for a maximum period of four years, without limiting the number of consecutive terms executive directors may serve; and

• non-executive directors should be appointed for two consecutive periods of no more than four years. Thereafter, non-executive directors may be reappointed for a maximum of two consecutive periods of no more than two years, provided that the reasons for any reappointment after an eight-year term of office should be disclosed in our statutory annual management report.

The general meeting shall at all times be entitled to suspend or dismiss a director. Under our articles of association, the general meeting may only adopt a resolution to suspend or dismiss a director by at least a two-thirds majority of the votes cast, provided that such majority represents more than half of our issued share capital, unless the resolution is passed at the proposal of our board of directors, in which latter case a simple majority of the votes cast is sufficient. If a director is suspended and the general meeting does not resolve to dismiss him or her within three months from the date of such suspension, the suspension shall lapse.

Delaware.    The Delaware General Corporation Law generally provides for a one-year term for directors, but permits directorships to be divided into up to three classes with up to three-year terms, with the years for each class expiring in different years, if permitted by the certificate of incorporation, an initial bylaw or a bylaw adopted by the stockholders. A director elected to serve a term on a “classified” board may not be removed by stockholders without cause. There is no limit in the number of terms a director may serve.

Director vacancies

The Netherlands.    Our board of directors can temporarily fill vacancies in its midst caused by temporary absence or incapacity of directors without requiring a shareholder vote. If all of our directors are absent or incapacitated, our management shall be attributed to the person who most recently ceased to hold office as the chairperson of our board of directors, provided that if such former chairperson is unwilling or unable to accept that position, our management shall be attributed to the person who most recently ceased to hold office as our Chief Executive Officer. If such former Chief Executive Officer is also unwilling or unable to accept that position, our management shall be attributed to one or more persons

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whom the general meeting. The person(s) charged with our management in this manner may designate one or more persons to be charged with our management instead of, or together with, such person(s).

Under Dutch law, directors are appointed and re-appointed by the general meeting. Under our articles of association, our directors will be appointed by the general meeting upon binding nomination by our board of directors. However, the general meeting may at all times overrule a binding nomination by a resolution adopted by at least a two-thirds majority of the votes cast, provided such majority represents more than half of the issued share capital. If the general meeting overrules a binding nomination, the board of directors has the exclusive right to make a new nomination.

Delaware.    The Delaware General Corporation Law provides that vacancies and newly created directorships may be filled by a majority of the directors then in office (even though less than a quorum) unless (i) otherwise provided in the certificate of incorporation or bylaws of the corporation or (ii) the certificate of incorporation directs that a particular class of shares is to elect such director, in which case any other directors elected by such class, or a sole remaining director elected by such class, will fill such vacancy.

Conflict-of-interest transactions

The Netherlands.    Under Dutch law and our articles of association, our directors shall not take part in any discussion or decision-making that involves a subject or transaction in relation to which he or she has a direct or indirect personal conflict of interest with us. Such a conflict of interest would generally arise if the director concerned is unable to serve our interests and the business connected with our company with the required level of integrity and objectivity due to the existence of the conflicting personal interest. Our articles of association provide that if as a result of conflicts of interests no resolution of the board of directors can be adopted, the resolution may nonetheless be adopted by the board of directors as if none of the directors had a conflict of interest. In that latter case, each director is entitled to participate in the discussion and decision-making process and to cast a vote.

The DCGC provides the following best practice recommendations in relation to conflicts of interests in respect of directors:

• A director should report any conflict of interest or potential conflict of interest in a transaction that is of material significance to the company and/or to such person to the chairperson of the board of directors without delay and should provide all relevant information in that regard, including the relevant information pertaining to his or her spouse, registered partner or other life companion, foster child and relatives by blood or marriage up to the second degree. If the chairperson of the board of directors has a conflict of interest or potential conflict of interest, he or she should report this to the vice-chairperson of the board of directors without delay.

• The board of directors should decide, outside the presence of the director concerned, whether there is a conflict of interest.

• All transactions in which there are conflicts of interest with directors should be agreed on terms that are customary in the market.

• Decisions to enter into transactions in which there are conflicts of interest with directors that are of material significance to the company and/or to the relevant directors should require the approval of the board of directors. Such transactions should be published in our statutory annual report, together with a description of the conflict of interest and a declaration that the relevant best practice provisions of the DCGC have been complied with.

Delaware.    The Delaware General Corporation Law generally permits transactions involving a Delaware corporation and an interested director of that corporation if:

• the material facts as to the director’s relationship or interest are disclosed and a majority of disinterested directors consent;

• the material facts are disclosed as to the director’s relationship or interest and a majority of shares entitled to vote thereon consent; or

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• the transaction is fair to the corporation at the time it is authorized by the board of directors, a committee of the board of directors or the stockholders.

Proxy voting by directors

The Netherlands.    An absent director may issue a proxy for a specific meeting of the board of directors but only to another director in writing or by electronic means.

Delaware.    A director of a Delaware corporation may not issue a proxy representing the director’s voting rights as a director.

Dutch corporate governance code

We are subject to the Dutch Corporate Governance Code, or the DCGC. The DCGC contains both principles and best practice provisions on corporate governance that regulate relations between the board of directors and the general meeting and matters in respect of financial reporting, auditors, disclosure, compliance and enforcement standards. The DCGC is based on a “comply or explain” principle. A copy of the DCGC can be found on www.mccg.nl/english. Accordingly, we are required to disclose in our annual board report, filed in the Netherlands, to what extent we comply with the principles and best practice provisions of the DCGC, and where we do not (for example, because of a conflicting Nasdaq requirement or otherwise), we must state why and to what extent we deviate in our annual board report.

We do not comply with all principles and best practice provisions of the DCGC. As of the date of this prospectus, our main deviations from the DCGC are summarized below, but cannot exclude the possibility of deviating from additional provisions of the DCGC after the date hereof, including in order to follow market practice or governance practices in the United States.

Under our articles of association as they will read following our corporate reorganization, our directors will be appointed by the general meeting on the basis of a binding nomination prepared by our board of directors. This means that the nominee will be appointed to board of directors, unless the general meeting removes the binding nature of the nomination (in which case a new nomination will be prepared by our board of directors for a subsequent general meeting). Our articles of association as they will read following our corporate reorganization, will provide that the general meeting can only pass such resolution by a two-thirds majority representing more than half of the issued share capital. However, the DCGC recommends that the general meeting can pass such a resolution by simple majority, representing no more than one-third of the issued share capital.

Under our articles of association as they will read following our corporate reorganization, directors can only be dismissed by the general meeting by simple majority, provided that our board of directors proposes the dismissal. In other cases, the general meeting can only pass such resolution by a two-thirds majority representing more than half of the issued share capital. However, the DCGC recommends that the general meeting can pass such a resolution to dismiss a director by simple majority, representing no more than one-third of the issued share capital.

The DCGC recommends against providing equity awards as part of the compensation of a non-executive director. However, we may deviate from this recommendation and grant equity awards to our non-executive directors, consistent with U.S. market practice.

Our Plan allows us to set the terms and conditions of awards granted thereunder. Under the Plan, we may grant common shares that are not subject to a lock-up period of at least five years after the date of grant, and we may grant options without restricting the exercisability of those options during the first three years after the date of grant. In those cases, this would cause a deviation from the DCGC.

Shareholder rights

Voting rights

The Netherlands.    In accordance with Dutch law and our articles of association, each issued common share and preferred share, if any are outstanding, confers the right to cast one vote at the general meeting. No votes may be cast at a general meeting on shares held by us or our subsidiaries or on

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shares for which we or our subsidiaries hold depository receipts. Nonetheless, the holders of a usufruct (vruchtgebruik) and the holders of a right of pledge (pandrecht) in respect of shares held by us or our subsidiaries in our share capital are not excluded from the right to vote on such shares, if the usufruct (vruchtgebruik) or the right of pledge (pandrecht) was granted prior to the time such shares were acquired by us or any of our subsidiaries. Neither we nor any of our subsidiaries may cast votes in respect of a share on which we or such subsidiary holds a usufruct (vruchtgebruik) or a right of pledge (pandrecht). Shares which are not entitled to voting rights pursuant to the preceding sentences will not be taken into account for the purpose of determining the number of shareholders that vote and that are present or represented, or the amount of the share capital that is provided or that is represented at a general meeting.

For each general meeting, the board of directors may determine that a record date will be applied in order to establish which shareholders are entitled to attend and vote at the general meeting. Such record date shall be the 28th day prior to the day of the general meeting. The record date and the manner in which shareholders can register and exercise their rights will be set out in the notice of the meeting which must be published in a Dutch daily newspaper with national distribution at least 15 calendar days prior to the meeting (and such notice may therefore be published after the record date for such meeting). Under our articles of association, shareholders and others with meeting rights under Dutch law must notify us in writing or by electronic means of their identity and intention to attend the general meeting. This notice must be received by us ultimately on the seventh day prior to the general meeting, unless indicated otherwise when such meeting is convened.

Delaware.    Under the Delaware General Corporation Law, each stockholder is entitled to one vote per share of stock, unless the certificate of incorporation provides otherwise. In addition, the certificate of incorporation may provide for cumulative voting at all elections of directors of the corporation, or at elections held under specified circumstances. Either the certificate of incorporation or the bylaws may specify the number of shares and/or the amount of other securities that must be represented at a meeting in order to constitute a quorum, but in no event will a quorum consist of less than one-third of the shares entitled to vote at a meeting.

Stockholders as of the record date for the meeting are entitled to vote at the meeting, and the board of directors may fix a record date that is no more than 60 nor less than 10 days before the date of the meeting, and if no record date is set then the record date is the close of business on the day next preceding the day on which notice is given, or if notice is waived then the record date is the close of business on the day next preceding the day on which the meeting is held. The determination of the stockholders of record entitled to notice or to vote at a meeting of stockholders shall apply to any adjournment of the meeting, but the board of directors may fix a new record date for the adjourned meeting.

Shareholder proposals

The Netherlands.    Pursuant to Dutch law, one or more shareholders or others with meeting rights under Dutch law who jointly represent at least one-tenth of our issued share capital may request us to convene a general meeting, setting out in detail the matters to be discussed. If we have not taken the steps necessary to ensure that such meeting can be held within six weeks after the request, the proponent(s) may, on their application, be authorized by the competent Dutch court in preliminary relief proceedings to convene a general meeting. The court shall disallow the application if it does not appear that the proponent(s) has/have previously requested our board of directors to convene a general meeting and our board of directors has not taken the necessary steps so that the general meeting could be held within six weeks after the request.

Pursuant to Dutch law, and subject to the applicable requirements, the agenda for our general meetings shall also include such items requested by one or more shareholders or others with meeting rights under Dutch law representing at least 3% of our issued share capital. These requests must be made in writing or by electronic means and received by us at least 60 days before the day of the meeting. No resolutions shall be adopted on items other than those that have been included in the agenda.

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In accordance with the DCGC and our articles of association, shareholders having the right to put an item on the agenda under the rules described above shall exercise such right only after consulting board of directors in that respect. If one or more shareholders intend to request that an item be put on the agenda that may result in a change in our strategy (for example, the dismissal of directors), our board of directors must be given the opportunity to invoke a reasonable period to respond to such intention. Such period shall not exceed 180 days (or such other period as may be stipulated for such purpose by Dutch law and/or the DCGC from time to time). If invoked, our board of directors must use such response period for further deliberation and constructive consultation, in any event with the shareholders(s) concerned, and shall explore the alternatives. At the end of the response time, our board of directors shall report on this consultation and the exploration of alternatives to the general meeting. The response period may be invoked only once for any given general meeting and shall not apply: (a) in respect of a matter for which a response period has been previously invoked; or (b) if a shareholder holds at least 75% of our issued share capital as a consequence of a successful public bid. The response period may also be invoked in response to shareholders or others with meeting rights under Dutch law requesting that a general meeting be convened, as described above.

In addition, as noted above, as at the date of this prospectus, a bill is pending in the Dutch Senate which, if enacted in its current form (which is expected to occur shortly following the date of this prospectus), would introduce a statutory cooling-off period of up to 250 days during which our general meeting would not be able to dismiss, suspend or appoint members of our board of directors (or amend the provisions in our articles of association dealing with such matters) unless those matters would be proposed by our board of directors. This cooling-off period could be invoked by our board of directors, in case:

• shareholders, using either their shareholder proposal right or their right to request a general meeting, as described above, propose an agenda item for the general meeting to dismiss, suspend or appoint a member of our board of directors (or to amend any provision in the articles of association dealing with such matters); or

• a public offer for our company is made or announced without our support, provided, in each case, that our board of directors believes that such proposal or offer materially conflicts with the interests of our company and its business.

Delaware.    Delaware law does not specifically grant stockholders the right to bring business before an annual or special meeting. However, if a Delaware corporation is subject to the SEC’s proxy rules, a stockholder who owns at least €2,000 in market value, or 1% of the corporation’s securities entitled to vote, and has owned such securities for at least one year, may propose a matter for a vote at an annual or special meeting in accordance with those rules.

Action by written consent

The Netherlands.    Under Dutch law, shareholders’ resolutions may be adopted in writing without holding a meeting of shareholders, provided that (i) the articles of association allow such action by written consent, (ii) the company has not issued bearer shares or, with its cooperation, depository receipts for shares in its capital, and (iii) the resolution is adopted unanimously by all shareholders that are entitled to vote. Although our articles of association allow for shareholders’ resolutions to be adopted in writing, the requirement of unanimity renders the adoption of shareholder resolutions without holding a meeting not feasible for us as a publicly traded company.

Delaware.    Although permitted by Delaware law, publicly listed companies do not typically permit stockholders of a corporation to take action by written consent.

Appraisal rights

The Netherlands.    Subject to certain exceptions, Dutch law does not recognize the concept of appraisal or dissenters’ rights. However, Dutch law does provide for squeeze-out procedures as described under “Dividends and Other Distributions - Squeeze-Out Procedures.” Also, Dutch law provides for cash exit rights in certain situations for dissenting shareholders of a company organized under Dutch law entering into certain types of mergers. In those situations, a dissenting shareholder may file a claim with the Dutch

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company for compensation. Such compensation shall then be determined by one or more independent experts. The shares of such shareholder that are subject to such claim will cease to exist as of the moment of entry into effect of the merger.

Delaware.    The Delaware General Corporation Law provides for stockholder appraisal rights, or the right to demand payment in cash of the judicially determined fair value of the stockholder’s shares, in connection with certain mergers and consolidations.

Shareholder suits

The Netherlands.    In the event a third-party is liable to a Dutch company, only the company itself can bring a civil action against that party. The individual shareholders do not have the right to bring an action on behalf of the company. Only in the event that the cause for the liability of a third-party to the company also constitutes a tortious act directly against a shareholder does that shareholder have an individual right of action against such third-party in its own name. Dutch law provides for the possibility to initiate such actions collectively, in which a foundation or an association can act as a class representative and has standing to commence proceedings and claim damages if certain criteria are met. The court will first determine if those criteria are met. If so, the case will go forward as a class action on the merits after a period allowing class members to opt out from the case has lapsed. All members of the class who are residents of the Netherlands and who did not opt-out will be bound to the outcome of the case. Residents of other countries must actively opt in in order to be able to benefit from the class action. The defendant is not required to file defenses on the merits prior to the merits phase having commenced. It is possible for the parties to reach a settlement during the merits phase. Such a settlement can be approved by the court, which approval will then bind the members of the class, subject to a second opt-out. This new regime applies to claims brought after January 1, 2020 and which relate to certain events that occurred prior to that date. For other matters, the old Dutch class actions regime will apply. Under the old regime, no monetary damages can be sought. Also, a judgment rendered under the old regime will not bind individual class members. Even though Dutch law does not provide for derivative suits, our directors and officers can still be subject to liability under U.S. securities laws.

Delaware.    Under the Delaware General Corporation Law, a stockholder may bring a derivative action on behalf of the corporation to enforce the rights of the corporation. An individual also may commence a class action suit on behalf of himself and other similarly situated stockholders where the requirements for maintaining a class action under Delaware law have been met. A person may institute and maintain such a suit only if that person was a stockholder at the time of the transaction which is the subject of the suit. In addition, under Delaware case law, the plaintiff normally must be a stockholder at the time of the transaction that is the subject of the suit and throughout the duration of the derivative suit. Delaware law also requires that the derivative plaintiff make a demand on the directors of the corporation to assert the corporate claim before the suit may be prosecuted by the derivative plaintiff in court, unless such a demand would be futile.

Repurchase of shares

The Netherlands.    Under Dutch law, when issuing shares, a public company such as ours may not subscribe for newly issued shares in its own capital. Such company may, however, subject to certain restrictions of Dutch law and its articles of association, acquire shares in its own capital. A listed public company such as ours may acquire fully paid shares in its own capital at any time for no valuable consideration. Furthermore, subject to certain provisions of Dutch law and its articles of association, such company may repurchase fully paid shares in its own capital if (i) the company’s shareholders’ equity (eigen vermogen) less the payment required to make the acquisition does not fall below the sum of paid-in and called-up share capital plus any reserves required by Dutch law or its articles of association and (ii) the aggregate nominal value of shares of the company which the company acquires, holds or on which the company holds a pledge (pandrecht) or which are held by a subsidiary of the company, would not exceed 50% of its then-current issued share capital.

An acquisition by us of shares in our capital for a consideration must be authorized by our general meeting. Such authorization may be granted for a maximum period of 18 months and must specify the number of shares that may be acquired, the manner in which shares may be acquired and the price limits within which shares may be acquired. The actual acquisition may only be effected pursuant to a

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resolution of our board of directors. Our board of directors will be authorized for a period of 18 months following the completion of our corporate reorganization to cause the repurchase of shares (or depository receipts for shares) by us of up to 10% of our issued share capital, for a price per share not exceeding 110% of the average market price of our common shares on Nasdaq (such average market price being the average of the closing prices on each of the five consecutive trading days preceding the date the acquisition is agreed upon by us), provided that, until our common shares are listed on a stock exchange, the maximum purchase price shall be 110% of the original issue price of the shares concerned.

No authorization of the general meeting is required if fully paid common shares are acquired by us with the intention of transferring such common shares to our employees under an applicable employee share purchase plan.

Delaware.    Under the Delaware General Corporation Law, a corporation may purchase or redeem its own shares unless the capital of the corporation is impaired or the purchase or redemption would cause an impairment of the capital of the corporation. A Delaware corporation may, however, purchase or redeem out of capital any of its preferred shares or, if no preferred shares are outstanding, any of its own shares if such shares will be retired upon acquisition and the capital of the corporation will be reduced in accordance with specified limitations.

Anti-takeover provisions

The Netherlands.    Under Dutch law, various protective measures are possible and permissible within the boundaries set by Dutch law and Dutch case law.

Certain provisions of our articles of association also may make it more difficult for a third-party to acquire control of us or effect a change in the composition of our board of directors. These include:

• the authorization of a class of preferred shares that may be issued to a protective foundation, in such a manner as to dilute the interest of any potential acquirer or shareholder activist, see “Risk factors—Provisions of our articles of association or Dutch corporate law might deter acquisition bids for us that might be considered favorable and prevent, delay or frustrate any attempt to replace or dismiss the members of our board of directors”;

• a provision that our directors are appointed on the basis of a binding nomination prepared by our board of directors which can only be overruled by a two-thirds majority of votes cast representing more than half of our issued share capital;

• a provision that our directors may only be dismissed by the general meeting by a two-thirds majority of votes cast representing more than half of our issued share capital, unless the dismissal is proposed by our board of directors in which latter case a simple majority of the votes cast would be sufficient;

• a provision allowing, among other matters, the former chairperson of our board of directors or our former Chief Executive Officer to manage our affairs if all of our directors are dismissed and to appoint others to be charged with our affairs, including the preparation of a binding nomination for directors as discussed above, until new directors are appointed by the general meeting on the basis of such binding nomination; and

• a requirement that certain matters, including an amendment of our articles of association, may only be resolved upon by our general meeting if proposed by our board of directors.

Dutch law also allows for staggered multi-year terms of our directors, as a result of which only part of our directors may be subject to appointment or re-appointment in any given year.

Delaware.    In addition to other aspects of Delaware law governing fiduciary duties of directors during a potential takeover, the Delaware General Corporation Law also contains a business combination statute that protects Delaware companies from hostile takeovers and from actions following the takeover by prohibiting some transactions once an acquirer has gained a significant holding in the corporation.

Section 203 of the Delaware General Corporation Law prohibits “business combinations,” including mergers, sales and leases of assets, issuances of securities and similar transactions by a corporation or a

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subsidiary with an interested stockholder that beneficially owns 15% or more of a corporation’s voting stock, within three years after the person becomes an interested stockholder, unless:

• the transaction that will cause the person to become an interested stockholder is approved by the board of directors of the target prior to the transactions;

• after the completion of the transaction in which the person becomes an interested stockholder, the interested stockholder holds at least 85% of the voting stock of the corporation not including shares owned by persons who are directors and officers of interested stockholders and shares owned by specified employee benefit plans; or

• after the person becomes an interested stockholder, the business combination is approved by the board of directors of the corporation and holders of at least 66.67% of the outstanding voting stock, excluding shares held by the interested stockholder.

A Delaware corporation may elect not to be governed by Section 203 by a provision contained in the original certificate of incorporation of the corporation or an amendment to the original certificate of incorporation or to the bylaws of the company, which amendment must be approved by a majority of the shares entitled to vote and may not be further amended by the board of directors of the corporation. In most cases, such an amendment is not effective until 12 months following its adoption.

Inspection of books and records

The Netherlands.    The board of directors must provide the general meeting, within a reasonable amount of time with all information that the general meeting requires, unless this would be contrary to an overriding interest of our company. If the board of directors invokes such an overriding interest, it must give reasons.

Delaware. Under the Delaware General Corporation Law, any stockholder may inspect for any proper purpose certain of the corporation’s books and records during the corporation’s usual hours of business.

Suspension and dismissal of directors

The Netherlands.    Under our articles of association, directors can only be suspended or dismissed by the general meeting by simple majority, provided that our board of directors proposes the suspension or dismissal. In other cases, the general meeting can only pass such resolution by a two-thirds majority representing more than half of the issued share capital. The DCGC recommends that the general meeting can pass a resolution to dismiss a director by a simple majority, representing no more than one-third of the issued share capital.

Delaware.    Under the Delaware General Corporation Law, any director or the entire board of directors may be removed, with or without cause, by the holders of a majority of the shares then entitled to vote at an election of directors, except (i) unless the certificate of incorporation provides otherwise, in the case of a corporation whose board is classified, stockholders may effect such removal only for cause, or (ii) in the case of a corporation having cumulative voting, if less than the entire board is to be removed, no director may be removed without cause if the votes cast against his removal would be sufficient to elect him if then cumulatively voted at an election of the entire board of directors, or, if there are classes of directors, at an election of the class of directors of which he is a part.

Issuance of shares

The Netherlands.    Under Dutch law, a company’s general meeting is the corporate body authorized to resolve on the issuance of shares and the granting of rights to subscribe for shares. The general meeting can delegate such authority to another corporate body of the company for a period not exceeding five years; this authorization may only be extended from time to time for a maximum period of five years. Our board of directors is authorized for a period of five years from the completion of our corporate reorganization to issue shares or grant rights to subscribe for shares up to our authorized share capital from time to time. We may not subscribe for our own shares on issue.

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Delaware.    All creation of shares require the board of directors to adopt a resolution or resolutions, pursuant to authority expressly vested in the board of directors by the provisions of the company’s certificate of incorporation.

Preemptive rights

The Netherlands.    Under Dutch law, in the event of an issuance of shares, each shareholder will have a pro rata pre-emption right in proportion to the aggregate nominal value of the shares held by such holder (except in case of an issue of shares to employees, against a contribution other than in cash or pursuant to the exercise of a previously acquired right to subscribe for shares). Under our articles of association, the pre-emption rights in respect of newly issued shares may be restricted or excluded by a resolution of the general meeting. Another corporate body may restrict or exclude the pre-emption rights in respect of newly issued shares if it has been designated as the authorized body to do so by the general meeting. Such designation can be granted for a period not exceeding five years. A resolution of the general meeting to restrict or exclude the pre-emption rights or to designate another corporate body as the authorized body to do so requires a majority of not less than two-thirds of the votes cast, if less than one-half of our issued share capital is represented at the meeting. Our board of directors is authorized for a period of five years from the completion of our corporate reorganization to limit or exclude pre-emption rights in relation to an issuance of shares or a grant of rights to subscribe for shares that the board of directors is authorized to resolve upon (see above under “Issuance of Shares”).

Delaware.    Under the Delaware General Corporation Law, stockholders have no preemptive rights to subscribe for additional issues of stock or to any security convertible into such stock unless, and to the extent that, such rights are expressly provided for in the certificate of incorporation.

Dividends

The Netherlands. Under Dutch law, we may only pay dividends and other distributions from our reserves to the extent our shareholders’ equity (eigen vermogen) exceeds the sum of our paid-in and called-up share capital plus the reserves we must maintain under Dutch law or our articles of association and (if it concerns a distribution of profits) after adoption of our statutory annual accounts by our general meeting from which it appears that such dividend distribution is allowed. Subject to those restrictions, any future determination to pay dividends or other distributions from our reserves will be at the discretion of our board of directors and will depend upon a number of factors, including our results of operations, financial condition, future prospects, contractual restrictions, restrictions imposed by applicable law and other factors we deem relevant. See “Dividend Policy.”

Pursuant to our articles of association, distributions may be made in cash, in kind or in the form of shares.

Under our articles of association, if any preferred shares are or have been outstanding, a dividend is first paid out of our profits, if available for distribution, to the holders or former holders, as applicable, of those preferred shares to the extent they are entitled to such distribution under our articles of association, which we refer to as our preferred dividend. Thereafter, our board of directors may decide that all or part of the remaining profits shown in our adopted statutory annual accounts will be added to our reserves. After reservation of any such profits, any remaining profits will be at the disposal of the general meeting at the proposal of our board of directors for distribution on our common shares, subject to applicable restrictions of Dutch law as set out in the previous paragraph. Our board of directors is permitted, subject to certain requirements and applicable restrictions of Dutch law, to declare interim dividends without the approval of our general meeting. Dividends and other distributions shall be made payable no later than a date determined by us. Claims to dividends and other distributions not made within five years from the date that such dividends or distributions became payable will lapse and any such amounts will be considered to have been forfeited to us (verjaring).

Delaware.    Under the Delaware General Corporation Law, a Delaware corporation may pay dividends out of its surplus (the excess of net assets over capital), or in case there is no surplus, out of its net profits for the fiscal year in which the dividend is declared and/or the preceding fiscal year (provided that the amount of the capital of the corporation is not less than the aggregate amount of the capital represented by the issued and outstanding stock of all classes having a preference upon the distribution of assets). In

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determining the amount of surplus of a Delaware corporation, the assets of the corporation, including stock of subsidiaries, must be valued at their fair market value as determined by the board of directors, without regard to their historical book value. Dividends may be paid in the form of common shares, property or cash.

Shareholder vote on certain reorganizations

The Netherlands.    Under Dutch law, the general meeting must approve resolutions of the board of directors relating to a significant change in the identity or the character of the company or the business of the company, which includes:

• a transfer of the business or virtually the entire business to a third-party;

• the entry into or termination of a long-term cooperation of the company or a subsidiary with another legal entity or company or as a fully liable partner in a limited partnership or general partnership, if such cooperation or termination is of a far-reaching significance for the company; and

• the acquisition or divestment by the company or a subsidiary of a participating interest in the capital of a company having a value of at least one-third of the amount of its assets according to its balance sheet and explanatory notes or, if the company prepares a consolidated balance sheet, according to its consolidated balance sheet and explanatory notes in the last adopted annual accounts of the company.

The absence of such approval shall result in the relevant resolution being null and void but shall not affect the powers of representation of the board of directors or of the directors vis-à-vis third parties.

Delaware.    Under the Delaware General Corporation Law, the vote of a majority of the outstanding shares of capital stock entitled to vote thereon generally is necessary to approve a merger or consolidation or the sale of all or substantially all of the assets of a corporation. The Delaware General Corporation Law permits a corporation to include in its certificate of incorporation a provision requiring for any corporate action the vote of a larger portion of the stock or of any class or series of stock than would otherwise be required.

Under the Delaware General Corporation Law, no vote of the stockholders of a surviving corporation to a merger is needed, however, unless required by the certificate of incorporation, if (i) the agreement of merger does not amend in any respect the certificate of incorporation of the surviving corporation, (ii) the shares of stock of the surviving corporation are not changed in the merger, and (iii) the number of common shares of the surviving corporation into which any other shares, securities or obligations to be issued in the merger may be converted does not exceed 20% of the surviving corporation’s common shares outstanding immediately prior to the effective date of the merger. In addition, stockholders may not be entitled to vote in certain mergers with other corporations that own 90% or more of the outstanding shares of each class of stock of such corporation, but the stockholders will be entitled to appraisal rights.

Remuneration of directors

The Netherlands.    Dutch law does not provide for limitations with respect to the aggregate annual compensation paid to our directors, provided that such compensation is consistent with our compensation policy.

Changes to such compensation policy will require a vote of our general meeting by a simple majority of votes cast. The board of directors determines the remuneration of individual directors with due observance of the compensation policy and Dutch law. A proposal with respect to remuneration schemes in the form of shares or rights to shares in which directors may participate is subject to approval by our general meeting by simple majority of votes cast. Such a proposal must set out at least the maximum number of shares or rights to subscribe for shares to be granted to the directors and the criteria for granting or amendment.

Our compensation policy will authorize our board of directors to determine the amount, level and structure of the compensation packages of our directors at the recommendation of our compensation committee. These compensation packages may consist of a mix of fixed and variable compensation components,

18

including base salary, short-term incentives, long-term incentives, fringe benefits, severance pay and pension arrangements, as determined by our board of directors.

Delaware.    Under the Delaware General Corporation Law, the stockholders do not generally have the right to approve the compensation policy for directors or the senior management of the corporation, although certain aspects of executive compensation may be subject to stockholder vote due to the provisions of U.S. federal securities and tax law, as well as exchange requirements.

19

EX-4.4

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

Exhibit 4.4

CLINICAL SUPPLY AGREEMENT

by and between

Seagen Inc.

and

LAVA THERAPEUTICS N.V.

JANUARY 27, 2023

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

CLINICAL SUPPLY AGREEMENT

This Clinical Supply Agreement (this “Agreement”) is entered into as of January 27, 2023 (the “Effective Date”), by and between Seagen Inc., a Delaware corporation, having a place of business at 21823 30^th Drive S.E., Bothell, WA 98021, United States (“Seagen”), and Lava Therapeutics N.V., a Netherlands public limited company (naamloze vennootschap) having an address at Yalelaan 60, 3584 CM Utrecht, the Netherlands (“Lava”). Seagen and Lava are referred to in this Agreement individually as a “Party” and collectively as the “Parties.”

BACKGROUND

WHEREAS, Lava and Seagen have entered into that certain Exclusive License Agreement dated as of September 23, 2022 (the “License Agreement”), pursuant to which Seagen obtained an exclusive license to Develop, Manufacture and Commercialize Licensed Compounds and Licensed Products in the Field in the Territory; and

WHEREAS, pursuant to the terms of the License Agreement, Seagen and Lava have agreed to enter into this Agreement in order to establish certain Manufacture and supply obligations of Lava with respect to GMP Drug Product and GMP Diluent in the form of fully released bulk unlabeled vials as further described on Exhibit A (collectively, “Product”) as well as, upon Seagen’s request, GMP Drug Substance; and

WHEREAS, Lava desires to have Manufactured and supply to Seagen Product and, upon Seagen’s request, GMP Drug Substance, and Seagen desires to be supplied Product and, upon Seagen’s request, GMP Drug Substance from Lava, in each case, subject to the applicable terms and conditions set forth in this Agreement.

NOW, THEREFORE, in consideration of the foregoing premises and the mutual covenants contained herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties, intending to be legally bound, agree as follows:

ARTICLE 1 DEFINITIONS

Unless specifically set forth to the contrary herein, the following terms, whether used in the singular or plural, shall have the respective meanings set forth below. Capitalized terms used herein but not defined shall have the meaning set forth in the License Agreement.

1.1“Agreement” shall have the meaning given such term in the preamble to this Agreement.

1.2“Approved Lava Subcontractor” means, as applicable, [***], [***], or a Third Party approved pursuant to Section 2.1.3 as a subcontractor of Lava hereunder.  Approved Lava Subcontractor shall include any subcontractor of an Approved Lava Subcontractor that is permitted under the underlying agreement between such Approved Lava Subcontractor and Lava.

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

1.3“Batch” means a specific quantity of a given Product (and, if applicable, GMP Drug Substance) that is intended to be of uniform character and quality, within specified limits, and is produced under GMP conditions during the same cycle of Manufacture as defined by the applicable Batch Records.

1.4“Batch Records” means, with respect to a Batch of a given Product (and, if applicable, GMP Drug Substance), the documents (prepared in accordance with GMP) recording the relevant Manufacturing of such Product (and, if applicable, GMP Drug Substance), including the controls, quality specifications, regulatory requirements and other requirements under which such Batch of Product (and, if applicable, GMP Drug Substance) was Manufactured.

1.5“Certificate of Analysis” means a document identified as such and provided by Lava to Seagen that sets forth the analytical test results against the applicable Specifications for a specified Batch of Product (and, if applicable, GMP Drug Substance) shipped by Lava to Seagen pursuant to this Agreement.

1.6“Certificate of Conformance” means a document identified as such and provided by Lava to Seagen confirming that a Product (and, if applicable, GMP Drug Substance) has been Manufactured, as of the time of release by Lava of such Product (and, if applicable, GMP Drug Substance), in compliance with the applicable Specifications for such Product (and, if applicable, GMP Drug Substance), GMPs and Applicable Laws.

1.7“Commercially Reasonable Efforts” means, with respect to the efforts to be expended by a Party in connection with any obligation hereunder, the reasonable, diligent, good faith efforts to satisfy such obligation as a similarly situated pharmaceutical or biologics company would normally use to satisfy a similar obligation under similar circumstances.

1.8“Delivered” and “Delivery” has the meanings set forth in Section 2.2.1. “Deliver” shall have the correlative meanings, as applicable.

1.9“Effective Date” has the meaning given such term in the preamble to this Agreement.

1.10“Facility” means any manufacturing facility or portion thereof used by or on behalf of Lava or its Affiliates or the Approved Lava Subcontractors in the Manufacture, packaging and storage of (a) Product, (b) GMP Drug Substance, or (c) Materials utilized in the Manufacture of Product or GMP Drug Substance, as applicable hereunder.

1.11“GMP Drug Substance” means the drug substance manufactured by [***] in accordance with GMP to support Manufacture of Product.  [***]

1.12“Governmental Authority” means any federal, state, national, state, provincial, or local government, or political subdivision thereof, or any multinational organization or any authority, agency or commission entitled to exercise any administrative, executive, judicial,

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

legislative, police, regulatory or taxing authority or power, or any court or tribunal (or any department, bureau or division thereof, or any governmental arbitrator or arbitral body).

1.13“Lava” has the meaning given such term in the preamble to this Agreement.

1.14“Lava Indemnitees” has the meaning set forth in Section 6.2.

1.15“License Agreement” has the meaning set forth in the recitals hereto.

1.16“Losses” has the meaning set forth in Section 6.1.

1.17“Manufacturing Process” means any and all processes (or any step in any process) used by Lava or an Affiliate or an Approved Lava Subcontractor to Manufacture Product, as applicable, as evidenced in the Batch Records.

1.18“Materials” means all raw materials, excipients, intermediates, packaging components and other components used in the Manufacture of Product or GMP Drug Substance.

1.19“Non-Conforming Product or Drug Substance” means Product, or if applicable GMP Drug Substance, that fails to meet the warranties in Section 3.2 of this Agreement at the time of Delivery.  

1.20“Product” has the meaning set forth in the recitals hereto.

1.21“Quality Agreement” means the Quality Agreement that will be entered into by the Parties (or their respective Affiliates or Approved Lava Subcontractors, as applicable) within [***] of the Effective Date of this Agreement with respect to the Product and GMP Drug Substance hereunder consistent with Lava’s existing relevant quality agreements with [***] and [***] and with Lava’s existing relevant regulatory licenses, as the same may subsequently be amended from time-to-time by mutual written agreement of the Parties (or their respective Affiliates, as applicable).

1.22“Seagen” has the meaning given such term in the preamble to this Agreement.

1.23“Seagen Indemnitees” has the meaning set forth in Section 6.1.

1.24“Specifications” means the specifications for Product or GMP Drug Substance, as the case may be, as defined in the Quality Agreement.

1.25“Supply Failure” means Lava’s failure to supply or cause to be supplied to Seagen (in accordance with the terms of this Agreement (including quality and/or quantity requirements)) at least [***] of the Product required to be delivered.

1.26“Supply Price” has the meaning set forth in Section 5.1.

1.27“Term” has the meaning set forth in Section 9.1.

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

1.28“Third Party Claims” has the meaning set forth in Section 6.1.

ARTICLE 2 SUPPLY AND DELIVERY

2.1Supply.  Subject to, and in accordance with, the terms and conditions of this Agreement, the following shall apply:

2.1.1Manufacture and Supply of Product.  Lava shall, or shall cause an Approved Lava Subcontractor to, Manufacture and supply to Seagen, the Product in the quantities set forth in the column titled “Required amount of vials filled” in Exhibit A hereto.  The Parties acknowledge and agree that Lava shall be obligated only to provide the Product in the quantities set forth in specified in the column titled “Required amount of vials filled” in Exhibit A hereto, and shall not have any ongoing obligation to Manufacture, supply, or otherwise provide the Product after it has delivered such quantities to Seagen. Seagen shall itself Manufacture or engage a Third Party manufacturer to Manufacture any additional quantities of Product as it needs or desires. Notwithstanding the foregoing, the Parties acknowledge that Seagen has requested that Lava cause its Approved Lava Subcontractors to Manufacture and Supply [***] of GMP Drug Product (the “Additional Batch”) as reflected in the [***] attached as Exhibit C hereto and incorporated by reference, and that [***].  Lava will not postpone or cancel the manufacture of the Additional Batch without the prior written consent of Seagen.  For the avoidance of doubt, the Parties agree that the Manufacture and supply of the Additional Batch shall be in accordance with this Agreement.  

2.1.2Performance of Manufacturing.  With respect to Product or GMP Drug Substance to be supplied hereunder, Lava will (a) Manufacture (or have Manufactured) such Product (and GMP Drug Substance) at one or more GMP Facilities, (b) maintain, or cause its designated Affiliate(s) or an Approved Lava Subcontractor(s) to maintain, at the applicable Facility(ies) where such Product (and GMP Drug Substance) is Manufactured all equipment and other items necessary to Manufacture such Product (and GMP Drug Substance).  Notwithstanding the foregoing or anything to the contrary contained herein, Lava shall not change the Facility used by Lava or the Approved Lava Subcontractors to Manufacture any Product (or GMP Drug Substance) to be supplied to Seagen or qualify a new source for Product (or GMP Drug Substance) to be supplied by Lava to Seagen without Seagen’s prior written consent (not to be unreasonably withheld, conditioned or delayed).

2.1.3Subcontracting.  Lava shall not subcontract any of its obligations hereunder or under the Quality Agreement to any Third Party without Seagen’s prior written consent (not to be unreasonably withheld, conditioned or delayed), provided that Lava may use any Approved Lava Subcontractor to perform its obligations hereunder or under the Quality Agreement as long as Lava remains solely responsible for the acts, omissions and performance of such Approved Lava Subcontractor as if such act, omissions and performance had been by Lava itself under this Agreement or the Quality Agreement, as applicable; provided, however, if the Quality Agreement is among Seagen, Lava, and an Approved Lava Subcontractor or Approved Lava Subcontractors, then [***]. Seagen acknowledges and agrees that Lava will Manufacture

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

and supply the Product, and if applicable, GMP Drug Substance, solely through Approved Lava Subcontractors, and that Lava has no Facilities.  

2.1.4Transfer of Residual GMP Drug Substance.  Following Seagen’s acceptance of all Product in accordance with the terms of this Agreement, upon Seagen’s written request delivered to Lava [***] after such acceptance, but no later than [***] after Seagen’s acceptance of the Product, Lava will cause an Approved Lava Subcontractor to transfer any remaining GMP Drug Substance to Seagen [***].

2.1.5Use of Affiliates.  Either Party shall have the right to exercise its rights and perform its obligations under this Agreement or the Quality Agreement either itself or through any of its Affiliates, provided that such Party shall remain solely responsible for the acts, omissions and performance of such Affiliate as if such acts, omissions and performance had been by such Party itself under this Agreement or the Quality Agreement, as applicable.  In addition, in each case where a Party’s Affiliate has an obligation pursuant to this Agreement or the Quality Agreement or performs an obligation pursuant to this Agreement or the Quality Agreement, (a) such Party shall cause and compel such Affiliate to perform such obligation and comply with the terms of this Agreement or the Quality Agreement, as applicable and (b) any breach of the terms or conditions of this Agreement or the Quality Agreement, as applicable, by such Affiliate shall be deemed a breach by such Party of such terms or conditions.

2.1.6Supply Failures.  In the event of a Supply Failure, the Parties shall, through the JRDC, discuss possible actions to cure such Supply Failure, which actions may include (i) evaluating and proposing options to expand Manufacturing capacity for Product, or (ii) engaging a Third Party manufacturer (or an additional Third Party manufacturer, as applicable) reasonably acceptable to both Parties and on terms to be reasonably agreed to by both Parties, to Manufacture additional quantities of Product.  For clarity, participating in such JRDC discussion will not itself cause Seagen to waive any rights or remedies under this Agreement or the License Agreement.

2.2Delivery and Risk of Loss.

2.2.1Lava shall deliver Product (and, if applicable, GMP Drug Substance) to [***] the Approved Lava Subcontractors’ Facilities as set forth in Exhibit A hereto.  Seagen will arrange the carriage of Product (and, if applicable, GMP Drug Substance) and [***] shipment costs of Product (and if applicable GMP Drug Substance). By making such Product (and, if applicable, GMP Drug Substance) [***] at the Approved Lava Subcontractors’ Facilities, [***] at such Facilities, and “Delivery” is deemed to have occurred at the time and place of such delivery and shall be deemed “Delivered” for purposes of this Agreement.

2.2.2Liens and Encumbrances.  Lava shall ensure that, at the time of Delivery of Product (and, if applicable, GMP Drug Substance) hereunder, that such Product (and, if applicable, GMP Drug Substance) is free from any security interest, lien, or encumbrance.

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

2.2.3Shipping Conditions; Certifications.  Lava shall ensure that Product (and, if applicable, GMP Drug Substance) is packaged (in bulk packaging) appropriately to maintain integrity and stability during transit and Seagen shall complete export documentation.  Each shipment shall be accompanied by a Certificate of Analysis (and, if not otherwise already covered in the Certificate of Analysis, a Certificate of Conformance) and such other documents as may be reasonably required pursuant to this Agreement, the Quality Agreement and Applicable Law with respect to each Batch contained in such shipment, and simultaneously with such shipment, Lava or its Approved Lava Subcontractor shall deliver electronically to Seagen’s representative specified in the Quality Agreement the applicable Certificate(s) of Analysis (and, if not otherwise already covered in the Certificate(s) of Analysis, Certificate(s) of Conformance) and such other documents as may be reasonably required pursuant to this Agreement, the Quality Agreement and Applicable Law.  In addition, if requested by writing in Seagen, Lava shall also provide Seagen with any Regulatory Authority certification for those countries in the Territory in which the applicable Regulatory Authority requires any such certification.  In addition, for each Batch of Product (and, if applicable, GMP Drug Substance), as applicable, to be supplied hereunder, Lava shall make available to Seagen documented quantity of Product (and, if applicable, GMP Drug Substance) contained therein.

2.2.4Satisfaction of Delivery Requirements.  Lava shall Deliver Product in the quantities specified in the column titled “Required amount of vials filled” on Exhibit A hereto; provided, however, that Lava shall be deemed to have satisfied its delivery quantity requirements (and shall not be deemed to be in breach of this Agreement) so long as at least [***] of the quantity of Product specified in the column titled “Required amount of vials filled” in Exhibit A has been delivered.

2.3Notification of Defects; Acceptance.  (i) Lava shall perform (or cause its Approved Lava Subcontractors to perform) analytical release testing of Product (and, if applicable, GMP Drug Substance) and provide Seagen upon Delivery with a Certificate of Analysis for Product (and, if applicable, GMP Drug Substance), and (ii) Seagen (or its designee) shall sample and inspect Product (and, if applicable, GMP Drug Substance) upon receipt at Seagen’s (or its designee’s) designated facility, as applicable, in each case of (i) and (ii) as set forth in the Quality Agreement. Claims made by Seagen concerning Non-Conforming Product or Drug Substance supplied hereunder shall be made within [***] after receipt at Seagen’s (or its designee’s) designated facility; provided that, with respect to any Non-Conforming Product or Drug Substance that could not reasonably have been detected upon receipt at Seagen’s (or its designee’s) designated facility in connection with the sampling, inspection or analytical release testing requirements described above, such Non-Conforming Product or Drug Substance claim shall be made within [***] after Seagen’s discovery thereof, but in no event later than [***] after receipt at such facility and provided that Seagen (or its designee) has complied with all shipment and storage requirements set forth in the Quality Agreement.  Any notice of rejection by Seagen shall be accompanied by a reasonably detailed statement of its reasons for rejection.  Lava shall notify Seagen in writing [***], but in any event within [***] after receipt of such notice of rejection, whether it accepts or rejects Seagen’s assertions of Non-Conforming Product or Drug Substance.  

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

2.3.1Independent Testing.  In case of any disagreement between the Parties as to a claim concerning Non-Conforming Product or Drug Substance pursuant to Section 2.3, the quality assurance representatives of the Parties will discuss in good faith to attempt to resolve any such disagreement.  If the foregoing discussions do not resolve the disagreement in a reasonable time (which shall not exceed [***] after the end of the [***] period referenced in Section 2.3 for Lava’s acceptance or rejection of Seagen’s assertion of Non-Conforming Product or Drug Substance), then a representative sample of such Product (or GMP Drug Substance) will be submitted to an independent testing laboratory mutually agreed upon by the Parties in writing for tests and final determination of whether such Product (or GMP Drug Substance) is Non-Conforming Product or Drug Substance.  The laboratory must meet GMP and be of recognized standing in the pharmaceutical industry and, as long as the laboratory meets such requirements, consent to the appointment of such laboratory will not be unreasonably withheld by either Party.  Such laboratory will use the test methods contained in the Quality Agreement.  The determination of conformance or compliance by such laboratory with respect to all or part of such Product (or GMP Drug Substance) will be final and binding on the Parties.  The fees and expenses of the laboratory incurred in making such determination will be paid by [***].

2.3.2Replacement of Product and GMP Drug Substance; Supply Failure.  With respect to Non-Conforming Product or Drug Substance as of the time of Delivery, or in the event of a Supply Failure, upon confirmation of such Supply Failure, at Seagen’s option, Lava shall (a) [***] replace such Non-Conforming Product or Drug Substance (or in the event of a Supply Failure, supply the amount of Product necessary to cure such failure), or (b) refund any amounts paid by Seagen for such Non-Conforming Product or Drug Substance, in each case ((a) and (b)) to the extent such remedy is available under Lava’s applicable agreements with [***] and [***], as applicable; provided, however, that to the extent neither replacement nor refund are available under Lava’s applicable agreements with [***] and [***], as applicable, then [***] an amount equal to (i) [***] for Non-Conforming Product or Drug Substance less (ii) [***] for any conforming GMP Drug Substance that has then been Delivered. Without limiting the foregoing, in all cases, to the extent Lava has Delivered any Non-Conforming Product or Drug Substance Lava shall reimburse Seagen for any reasonable shipping costs and other reasonable out-of-pocket costs (i.e., duties, taxes (including, VAT, if applicable) incurred by or on behalf of Seagen for such Non-Conforming Product or Drug Substance.  Notwithstanding the foregoing, if Lava has Delivered conforming Product in an amount that equals or exceeds the amount set forth in the column titled “Required amount of vials filled” in Exhibit A, Lava shall have no liability for refund or replacement of any Non-Conforming Product hereunder.

2.3.3Return.  If Lava requests that Seagen return any Non-Conforming Product or Drug Substance, as applicable, Lava will reimburse Seagen for the reasonable return shipping charges incurred by Seagen for such return shipment of such Non-Conforming Product or Drug Substance. Seagen shall provide Lava with written certification of such return.

2.4Quality Agreement.  Within [***] of the Effective Date of this Agreement, the Parties shall negotiate and execute a Quality Agreement which provides for, among other things, compliance responsibilities relating to the Manufacture of Product and GMP Drug Substance

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

hereunder.  In the event of conflict between terms of the Quality Agreement and this Agreement related to Product and GMP Drug Substance supplied hereunder, the terms of the Quality Agreement shall govern with respect to quality assurance matters and the terms of this Agreement shall govern and control all other matters.

ARTICLE 3REPRESENTATIONS, WARRANTIES AND COVENANTS

3.1Representations and Warranties of Each Party. Each Party represents and warrants to the other Party that as of the Effective Date:

3.1.1it is duly organized, validly existing and in good standing in its jurisdiction of organization;

3.1.2it has the requisite corporate or other company power and authority to enter into this Agreement and Quality Agreement to which it is a party and to perform its obligations hereunder and thereunder;

3.1.3this Agreement has been (and the Quality Agreement will be) duly executed by it and is legally binding upon it and enforceable in accordance with its terms, subject to the effects of bankruptcy, insolvency or other laws of general application affecting the enforcement of creditor rights, judicial principles affecting the availability of specific performance and general principles of equity (whether enforceability is considered a proceeding at law or equity);

3.1.4the execution and delivery of this Agreement and the Quality Agreement by it and the performance by it of the transactions contemplated hereby and thereby have been duly authorized by all necessary corporate or other company action and do not violate (a) such Party's charter documents, bylaws or other organizational documents, (b) any agreement, instrument or contractual obligation to which such Party is bound, (c) in any material respect, any Applicable Law or regulation of any court, governmental body or administrative or other agency having jurisdiction over such Party, or (d) any order, writ, judgment, injunction, decree or award of any Governmental Authority presently in effect and applicable to such Party;

3.1.5no authorization, consent, approval, exemption of or filing or registration with (i) any court or Governmental Authority under Applicable Law is or shall be necessary for, or in connection with, the entering into of this Agreement or the Quality Agreement or the transactions contemplated hereby or thereby, or for the performance by it of its respective obligations under this Agreement and the Quality Agreement, or (ii) any other Person is or shall be necessary for, or in connection with, the entering into of this Agreement, the Quality Agreement or the transactions contemplated hereby or thereby; and

3.1.6it is licensed, registered, or qualified under Applicable Law to do business and, to the extent required by Applicable Law, has obtained governmental licenses or completed such registrations as may be necessary or required by Applicable Law to provide the goods or services contemplated by this Agreement and the Quality Agreement.

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

3.2Manufacturing Representations, Warranties and Covenants of Lava with respect to Product and GMP Drug Substance.  Lava further represents and warrants that, at the time of Delivery hereunder and solely to the extent consistent with its agreements with [***] and [***], the Product and GMP Drug Substance Manufactured under this Agreement and Delivered to Seagen (or its designees) shall have been Manufactured in all material respects in compliance with (a) the Quality Agreement, (b) GMPs, and (c) Applicable Laws.  

3.3Disclaimer.  EACH PARTY ACKNOWLEDGES AND AGREES THAT EXCEPT AS SET FORTH IN THIS AGREEMENT, THE LICENSE AGREEMENT OR THE QUALITY AGREEMENT INCLUDING THIS ARTICLE 3, LAVA AND SEAGEN EXPRESSLY DISCLAIM ANY AND ALL REPRESENTATIONS AND WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, ALL OF WHICH ARE HEREBY SPECIFICALLY EXCLUDED AND DISCLAIMED.

ARTICLE 4QUALITY CONTROL

4.1Manufacturing Changes.  With respect to Product or GMP Drug Substance to be delivered hereunder, all amendments, changes and supplements to the (a) Specifications for Product or GMP Drug Substance, (b) the source of materials used to manufacture such Product or GMP Drug Substance, (c) the equipment used in Manufacturing such Product or GMP Drug Substance, (d) the test methods used in connection with the Manufacture of such Product or GMP Drug Substance, or (e) the Manufacturing Processes for such Product shall, in each case ((a) through (e)) only be made in accordance with the provisions of this Agreement or the Quality Agreement.

4.2Quality Control for Product.  Without limiting any other provisions set forth herein, Seagen and Lava shall comply with the provisions of the Quality Agreement.

4.3Batch Numbers.  All Product supplied hereunder shall be labeled with a traceable Batch number in a location agreed to by the Parties.

4.4Transfer of Stability Studies.  Lava shall transfer to Seagen or its designee, [***], responsibility for and control of all stability studies of GMP Drug Product and GMP Drug Substance at a time mutually agreed by the Parties, and the Parties shall use Commercially Reasonable Efforts to ensure completion of such transfer by [***].

4.5Quality-Related Complaints.  Lava shall record and reasonably cooperate with Seagen in investigating all quality related complaints in accordance with Lava’s written quality procedures. Lava shall, [***], use Commercially Reasonable Efforts to answer relevant pharmaceutical and technical queries from Seagen during normal business hours regarding the Manufacture, analysis, control or bulk packaging of such Initial Supply supplied hereunder which may affect the safety claims of the Product and shall reasonably assist and cooperate with Seagen (if Seagen or its Affiliate is holding the IND) in relation to any customer complaint concerning the quality of such Product.    

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

ARTICLE 5PRICE AND TAXES

5.1Supply Price.  Product and GMP Drug Substance supplied to Seagen under this Agreement will be at a “Supply Price” equal to [***], as set forth in Exhibit B.  At the time of Delivery, Lava shall invoice Seagen at the Supply Price for the Product so Delivered or, if Delivered as such rather than as part of the Product, GMP Drug Substance. Seagen shall pay invoices within [***] after its receipt of invoice.  

5.2Taxes.  The Parties agree and acknowledge that the provisions of Section 7.11 of the License Agreement shall apply to payments made pursuant to this Agreement.

ARTICLE 6INDEMNIFICATION; LIMITATIONS ON LIABILITY

6.1Indemnification by Lava.  Lava will indemnify, defend and hold harmless Seagen, its Affiliates, and its and their respective officers, directors, employees, agents, licensees, collaborators, and commercialization partners (collectively, the “Seagen Indemnitees”) against any and all losses, damages, liabilities or expenses (including reasonable attorney’s fees and other costs of defense) (collectively, “Losses”) that any of them may suffer in connection with any and all suits, investigations, claims, or demands of Third Parties (collectively, “Third Party Claims”) arising from, relating to or occurring as a result of (a) breach of any of the representations or warranties granted by Lava under this Agreement; (b) any Lava Indemnitee’s negligence or willful misconduct in performing obligations under this Agreement; (c) Lava’s breach of this Agreement; or (d) any infringement or misappropriation of any Third Party intellectual property rights by any Lava Indemnitees in the performance of Lava’s obligations hereunder; all of it except and to the extent that such Losses are within the scope of the indemnification obligation of Seagen as set forth in this Agreement. For clarity, regarding product liability claims, Lava shall not be obliged to indemnify Seagen if the relevant Product conformed to the Specifications at the time of delivery or if the failure to conform should have been reasonably detected by Seagen when reviewing the Product supplied by Lava and testing it against the Specifications.

6.2Indemnification by Seagen.  Seagen will indemnify, defend and hold harmless Lava, its Affiliates, and its and their respective officers, directors, employees and agents (collectively, the “Lava Indemnitees”) against any and all Losses that any of them may suffer in connection with any Third Party Claims arising from, relating to or occurring as a result of (a) any breach of any of the representations or warranties granted by Seagen under this Agreement; (b) the development, commercialization or use of the Product by Seagen infringes any Third Party intellectual property rights; (c) the development, manufacture, commercialization or use by Seagen of any product containing the Product (including, but not limited to, product liability claims); (d) any Seagen Indemnitee’s negligence or willful misconduct in performing obligations under this Agreement; or (e) Seagen’s breach of this Agreement; all of it except and to the extent that such Losses are within the scope of the indemnification obligation of Lava as set forth in this Agreement.

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

6.3Indemnification Procedures.  Each Party must [***] notify the other Party after receipt of any Third Party Claims made for which the other Party might be liable under Section 6.1 or 6.2, as applicable. The indemnifying Party will have the primary right to defend, negotiate, and settle such claims. The indemnified Party will be entitled to participate in the defense of such matter and to employ counsel at its expense to assist in such defense; provided, however, that the indemnifying Party will have final decision-making authority regarding all aspects of the defense of the claim.  The indemnified Party will provide the indemnifying Party with such information and assistance as the indemnifying Party may reasonably request, at the expense of the indemnifying Party. Neither Party will be responsible or bound by any settlement of any claim or suit made without its prior written consent; provided, however, that the indemnified Party will not unreasonably withhold or delay such consent.

6.4Exclusion of Indirect and Consequential Damages.  EXCEPT FOR LIABILITY FOR GROSS NEGLIGENCE, WILLFUL MISCONDUCT OR FRAUD, NEITHER PARTY SHALL BE LIABLE FOR SPECIAL, INCIDENTAL, CONSEQUENTIAL (INCLUDING LOST PROFITS, BUSINESS OR GOODWILL), PUNITIVE OR INDIRECT DAMAGES SUFFERED OR INCURRED BY THE OTHER PARTY OR ITS AFFILIATES IN CONNECTION WITH THIS AGREEMENT, HOWEVER CAUSED, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

6.5Limitation of Liability.  Except for liability for damages resulting from such Party’s gross negligence, willful misconduct or fraud, a Party's aggregate total liability under this Agreement will not exceed [***].  Lava shall use Commercially Reasonable Efforts to exercise its rights and remedies and recover amounts owed to it under such underlying agreements with the Approved Lava Subcontractors.  Lava shall provide Seagen with such information reasonably requested by Seagen regarding the status of any such recovery, provided that Lava shall not be obligated to breach its confidentiality obligations to any Third Party.  

ARTICLE 7CONFIDENTIALITY AND PUBLICITY

7.1Confidentiality. The confidentiality provisions set forth in Article 8 of the License Agreement shall apply to this Agreement, mutatis mutandis.

7.2Publicity.  Neither Party shall issue any public announcement, press release, or other public disclosure regarding this Agreement or its subject matter without the other Party’s prior written consent, except for any such disclosure that is, in the opinion of the disclosing Party’s counsel, required by Applicable Law or the rules of a stock exchange on which the securities of the disclosing Party are listed.  In the event a Party is, in the opinion of its counsel, required by Applicable Law or the rules of a stock exchange on which its securities are listed to make such a public disclosure, such Party shall submit the proposed disclosure in writing to the other Party as far in advance as reasonably practicable so as to provide a reasonable opportunity to comment thereon. Both Parties agree that each of them may disclose that Seagen has appointed Company as a manufacturer for the Product.

ARTICLE 8COMPLIANCE AND AUDITS

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

8.1Compliance with Applicable Law and Ethical Business Practices.  Both Lava and Seagen, and their respective Affiliates, shall perform their obligations under this Agreement in the Territory in accordance with Applicable Law.  No Party or any of its Affiliates shall, or shall be required to, undertake any activity under or in connection with this Agreement that violates, or that it believes, in good faith, may violate, any Applicable Law.

8.2Monitoring. Subject to Lava’s agreements with the Approved Lava Subcontractors, without cause and upon at least [***] written notice by Seagen to Lava, Lava will allow, and will use commercially reasonable efforts to cause Approved Lava Subcontractors to allow, Seagen employees and representatives (Seagen representatives mean any Third Party appointed by Seagen, that is reasonably acceptable to Lava) during normal business hours, to, [***], (a) observe the Manufacturing of the Product or GMP Drug Substance by Lava (or the Approved Lava Subcontractor(s)) at the Facility, (b) review the Records pertaining to Manufacture of the Product or GMP Drug Substance, and (c) inspect that part of the Facilities used by Lava or the Approved Lava Subcontractor(s) to render Manufacture the Product or GMP Drug Substance.

8.3Audits.  Subject to the provisions of Lava’s agreements with the Approved Lava Subcontractors, Lava will allow, and will use commercially reasonable efforts to cause Approved Lava Subcontractors to allow, Seagen employees and representatives to audit Lava’s and the Approved Lava Subcontractors’ operations and quality systems and that part of the Facilities used by Lava or the Approved Lava Subcontractor(s) related to the Manufacturing of Product or GMP Drug Substance.  Subject to the provisions of Lava’s agreements with the Approved Lava Subcontractors, except for cause, or otherwise with the prior consent of Lava or the Approved Lava Subcontractors, which consent shall not be unreasonably denied, withheld or conditioned (and Lava will use commercially reasonable efforts to ensure the Approved Lava Subcontractors do not unreasonably deny, withhold or condition consent), such audits shall not take place more than [***] per calendar year.  Audits to follow up on previously identified issues shall not be counted against [***] per calendar year limit.  Further details regarding audits and auditing procedure shall be included in the Quality Agreement.

8.4Governmental Authority Inspection.  Subject to the provisions of Lava’s agreements with the Approved Lava Subcontractors, Lava hereby agrees to notify Seagen in writing [***] of any proposed visit or inspection by any Governmental Authority pertaining to Product or GMP Drug Substance of which Lava has actual knowledge.  Subject to the provisions of Lava’s agreements with the Approved Lava Subcontractors, Lava hereby agrees to advise Seagen [***] after the commencement of any unannounced visit or inspection by any Governmental Authority pertaining to Product or GMP Drug Substance of which Lava has actual knowledge.  Subject to the provisions of Lava’s agreements with the Approved Lava Subcontractors, Lava will provide Seagen with a written English summary of the inspection results [***] following the conclusion of the inspection.  Subject to the provisions of Lava’s agreements with the Approved Lava Subcontractors, Lava shall provide Seagen with English copies of all material reports, documents or correspondence provided to or received from such a Governmental Authority related to Product or GMP Drug Substance as soon as reasonably possible, but no more than [***] from receipt or provision.    If Seagen enters into a supply

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

agreement directly with an Approved Lava Subcontractor relating to the Product or GMP Drug Substance, then Lava’s obligations under this Section 8.4 shall be of no further force and effect with respect to visits or inspections of such Approved Lava Subcontractor or reports, documents or correspondence provided to or received from a Governmental Authority by such Approved Lava Subcontractor.

ARTICLE 9TERM AND TERMINATION

9.1Term.  This Agreement shall commence on the Effective Date hereof and continue in full force and effect until Seagen’s acceptance of all Product and GMP Drug Substance, and payment for such Product and GMP Drug Substance, in accordance with the terms of this Agreement (the “Term”), unless the Parties agree in writing to earlier termination of this Agreement or as otherwise provided hereunder.

9.2Termination.

9.2.1Termination of License Agreement.  This Agreement shall automatically terminate in the event the License Agreement expires or is terminated.

9.2.2Termination for Convenience.  Seagen may terminate this Agreement upon no less than [***] prior written notice to Lava.

9.2.3Failure to Supply.  In the event that Lava fails to deliver the quantities of Product set forth in the column titled “Required amount of vials filled” in Exhibit A, then Seagen may terminate this Agreement upon [***] notice to Lava.

9.2.4Termination for Breach.  Either Party may terminate this Agreement in the event that the other Party materially breaches any obligation hereunder and fails to cure such material breach within [***] following receipt of written notice thereof by such Party.  

9.3Effect of Termination; Survival.  Expiration or termination of this Agreement shall not relieve the Parties of any obligation accruing upon or prior to such termination. Any expiration or termination of this Agreement shall be without prejudice to the rights of either Party against the other accrued or accruing under this Agreement upon or prior to expiration or termination. In addition, nothing in this Section 9.33 or otherwise shall relieve any Party from liability for any breach of this Agreement occurring prior to such termination. The Parties agree that in the event of termination of this Agreement, nothing in this Agreement shall operate to restrict or prevent Seagen from continuing to perform the relevant Phase 1 Clinical Trials using Product sourced from a Third Party or which Seagen Manufactures itself. The provisions of ARTICLE 7 shall survive the termination of this Agreement and shall continue in effect for [***] following such termination. In addition, the provisions of ARTICLE 3, 5, 6, 8, 10, and Sections 2.1.4, 4.5, and 9.3, and all definitions relating to the foregoing, shall survive any termination of this Agreement.

ARTICLE 10 MISCELLANEOUS

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

10.1Assignment. Except as provided in this Section 10.1, this Agreement may not be assigned or otherwise transferred (however structured, whether by merger, acquisition, sale of all or substantially all of its assets to which this Agreement relates or otherwise), nor may any right or obligation hereunder be assigned or transferred, by either Party, without the prior written consent of the other Party; provided, however, that either Party may, without such consent, assign this Agreement and its rights and obligations hereunder, in whole or in part, to an (a) Affiliate (provided the assigning Party shall remain liable for such Affiliate’s performance) or (b) other entity to which the License Agreement is assigned as permitted pursuant to Section 14.1 of the License Agreement. A Party shall notify the other Party in writing of any assignment of this Agreement by such Party within [***] thereof. Any attempted assignment not in accordance with this Section 10.1 shall be void and unenforceable. Any permitted assignee shall assume all assigned obligations of its assignor under this Agreement.

10.2Severability.  Should one or more of the provisions of this Agreement become void or unenforceable as a matter of Applicable Law, then this Agreement shall be construed as if such provision were not contained herein and the remainder of this Agreement shall be in full force and effect, and the Parties will use their best efforts to substitute for the invalid or unenforceable provision a valid and enforceable provision which conforms as nearly as possible with the original intent of the Parties.

10.3Governing Law; English Language.  This Agreement shall be governed by and construed in accordance with the laws of the State of New York, without reference to any rules of conflict of laws that might otherwise refer construction or interpretation of this Agreement to the substantive law of another jurisdiction. The United Nations Convention on Contracts for the International Sale of Goods (CISG) of 11 April 1980 shall not be applicable. This Agreement was prepared in the English language, which language shall govern the interpretation of, and any dispute regarding, the terms of this Agreement.  

10.4Dispute Resolution. The dispute resolution provisions set forth in Section 14.6 of the License Agreement shall apply to disputes arising under this Agreement, mutatis mutandis.

10.5Force Majeure.  Except for payment obligations hereunder, neither Party shall be responsible to the other for any failure or delay in performing any of its obligations under this Agreement or for other nonperformance hereunder (excluding, in each case, the obligation to make payments when due) if such delay or nonperformance is caused by a Force Majeure event. In such event, the affected Party will provide [***] written notice thereof to the other Party and will use all reasonable efforts to resume performance of its obligations and will keep the other Party informed of actions related thereto, and the performance of any obligations of the Party not so affected, which obligations are directly dependent upon such performance by the affected Party, shall be tolled during such period.  If any such failure or delay persists for more than [***], the Parties may negotiate in good faith any modifications of the terms of this Agreement that may be necessary or appropriate to arrive at an equitable solution.

10.6Waivers and Amendments.  The failure of any Party to assert a right hereunder or to insist upon compliance with any term or condition of this Agreement shall not constitute a

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

waiver of that right or excuse a similar subsequent failure to perform any such term or condition by the other Party.  No waiver shall be effective unless it has been given in writing and signed by the Party giving such waiver. No provision of this Agreement may be amended or modified other than by a written document signed by authorized representatives of each Party.

10.7Relationship of the Parties.  Nothing contained in this Agreement shall be deemed to constitute a partnership, joint venture, or legal entity of any type between Seagen and Lava, or to constitute one as the agent of the other.  Each Party shall act solely as an independent contractor, and nothing in this Agreement shall be construed to give any Party the power or authority to act for, bind or commit the other.

10.8Notices.  All notices, consents or waivers under this Agreement shall be in writing in the English language and will be deemed to have been duly given when (a) sent by facsimile transmission (receipt verified), provided further that a copy is promptly sent by an internationally recognized overnight delivery service (receipt requested) (although the sending of the fax shall be when the notice is deemed to have been given), or (b) the earlier of when received by the addressee or [***] after it was sent, if sent by registered letter or overnight courier by an internationally recognized overnight delivery service (receipt requested), in each case to the appropriate addresses and fax number set forth below (or to such other addresses and fax numbers as a Party may designate by notice).  This Section 10.8 is not intended to govern the day-to-day business communications necessary between the Parties in performing their obligations under the terms of this Agreement.

If to Seagen: Seagen Inc.

21823 30th Drive SE

Bothell, WA 98021

Fax: [***]

Email: [***]

Attention: General Counsel

If to Lava: LAVA Therapeutics N.V.

520 Walnut Street, Suite 1120

Philadelphia, PA 19106 USA

Email: [***]

Attention: General Counsel

With a copy (which shall not constitute notice) to:

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

[***]

10.9Further Assurances.  Lava and Seagen hereby covenant and agree without the necessity of any further consideration, to execute, acknowledge and deliver any and all documents and take any ministerial action as may be reasonably necessary to carry out the intent and purposes of this Agreement.

10.10No Third Party Beneficiary Rights. This Agreement is not intended to and shall not be construed to give any Third Party any interest or rights (including any Third Party beneficiary rights) with respect to or in connection with any agreement or provision contained herein or contemplated hereby, except as otherwise expressly provided for in this Agreement.

10.11Entire Agreement; Amendments.  This Agreement, together with the Schedules and Exhibits hereto, License Agreement and the Ancillary Agreements set forth the entire agreement and understanding of the Parties as to the subject matter hereof and supersedes all proposals, oral or written, and all other communications between the Parties with respect to such subject matter. In the event of conflict between terms or conditions of this Agreement and the terms or conditions of the License Agreement with respect to matters regarding the Manufacture and supply of Product or GMP Drug Substance to Seagen, the terms and conditions of this Agreement will govern.

10.12Counterparts.  This Agreement may be executed in two (2) or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.  A facsimile or scanned copy of this Agreement that includes a Party’s signature will be deemed an original.  Facsimile, PDF or other electronic execution and delivery of this Agreement (e.g., DocuSign) by any Party shall constitute a legal, valid and binding execution and delivery of this Agreement by such Party.

10.13Expenses.  Each Party shall pay its own costs, charges and expenses incurred in connection with the negotiation, preparation and signing of this Agreement.

10.14Construction; Interpretation.

10.14.1Construction.  The Parties hereto acknowledge and agree that (i) each Party and its counsel reviewed and negotiated the terms and provisions of this Agreement and have contributed to its revision, (ii) the rule of construction to the effect that any ambiguities are resolved against the drafting Party shall not be employed in the interpretation of this Agreement, and (iii) the terms and provisions of this Agreement shall be construed fairly as to all Parties hereto and not in a favor of or against any Party, regardless of which Party was generally responsible for the preparation of this Agreement.

10.14.2Interpretation.  The captions and headings in this Agreement are for convenience only, and are to be of no force or effect in construing or interpreting any of the

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

provisions of this Agreement. Unless specified to the contrary, references to Articles, Sections or Exhibits mean the particular Articles, Sections or Exhibits of or to this Agreement and references to this Agreement include all Exhibits and Schedules hereto. If any conflict exists between the main body of this Agreement and any Exhibit or Schedule hereto, the main body of this Agreement shall prevail. Unless context otherwise clearly requires, whenever used in this Agreement: (a) the words “include” or “including” shall be construed as incorporating, also, “but not limited to” or “without limitation”; (b) the word “day” or “year” means a calendar day or year unless otherwise specified; (c) the words “hereof,” “herein,” “hereby” and derivative or similar words refer to this Agreement as a whole and not merely to the particular provision in which such words appear; (d) the words “shall” and “will” have interchangeable meanings for purposes of this Agreement; (e) the word “or” shall have the inclusive meaning commonly associated with “and/or”; (f) words of any gender include the other genders; (g) words using the singular or plural number also include the plural or singular number, respectively; and (h) references to any specific law, rule or regulation, or article, section or other division thereof, shall be deemed to include the then-current amendments thereto or any replacement law, rule or regulation thereof.

10.15Cumulative Remedies.  No remedy referred to in this Agreement is intended to be exclusive unless explicitly stated to be so, and each shall be cumulative and in addition to any other remedy referred to in this Agreement or otherwise available under law.

10.16Export.  This Agreement is made subject to any restrictions concerning the export of products or technical information from the United States or other countries which may be imposed upon or related to Seagen or Lava from time to time.  Each Party agrees that it will not export, directly or indirectly, any technical information acquired from the other Party under this Agreement or any products using such technical information to a location or in a manner that at the time of export requires an export license or other Governmental Authority approval, without first obtaining the written consent to do so from the appropriate Governmental Authority.

10.17Exchange of Information in English.  Lava hereby acknowledges and agrees that all documentation (including all reports and invoices) and other information provided by Lava to Seagen pursuant to this Agreement and the Quality Agreement shall be in their original format and language, and Lava will provide, and shall use Commercially Reasonable Efforts to ensure the Approved Lava Subcontractors provide, accurate translations thereof into English if the original language is not English as reasonably requested by Seagen. Notwithstanding anything herein to the contrary, translations into English shall be the responsibility of, and at the sole cost and expense of, [***].

[Remainder of page left blank intentionally]

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

IN WITNESS WHEREOF, the Parties intending to be bound have caused this Agreement to be executed by their duly authorized representatives as of the Effective Date.

SEAGEN INC.

By:/s/ Todd Simpson​ ​​ ​

Name: Todd Simpson

Title: CFO

LAVA THERAPEUTICS N.V.

By:/s/ Steve Hurly​ ​​ ​

Name: Steve Hurly

Title: CEO

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

Exhibit A

Product

Material	ID	Manuf.	Required amount of vials filled	Vial content	Currently anticipated amount of vials filled
GMP Drug Product, unlabeled	[***]	[***]	[***]	[***]	[***]
GMP Diluent, unlabeled	[***]	[***]	[***]	[***]	[***]

To be delivered to Seagen at the following locations:

GMP Drug Substance	[***]	[***]
GMP Drug Product and GMP Diluent	[***]

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

Exhibit B

Supply Price

[***]

Certain portions of this exhibit (indicated by “[***]”) have been excluded because they are both not material and are the type that the registrant treats as private or confidential.

Exhibit C

[***]

[***]

EX-12.1

EXHIBIT 12.1

CERTIFICATION OF THE PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO EXCHANGE ACT RULE 13A-14(A) OR 15D-14(A) AS ADOPTED

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steve Hurly, certify that:

1.	I have reviewed this annual report on Form 20-F of LAVA Therapeutics N.V.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

4. The company’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)	Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)	Disclosed in this report any change in the company’s internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company’s internal control over financial reporting; and

)
5.	The company’s other certifying officer and have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions):

(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and
(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.

Date: April 11, 2023

By:	/s/ Steve Hurly
Name:	Steve Hurly
Title:	Director and Chief Executive Officer (Principal Executive Officer)

EX-12.2

EXHIBIT 12.2

CERTIFICATION OF THE PRINCIPAL FINANCIAL OFFICER

PURSUANT TO EXCHANGE ACT RULE 13A-14(A) OR 15D-14(A) AS ADOPTED

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Fred Powell, certify that:

1.	I have reviewed this annual report on Form 20-F of LAVA Therapeutics N.V.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

4. The company’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)	Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)	Disclosed in this report any change in the company’s internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company’s internal control over financial reporting; and

5. The company’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions):

(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and
(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.

Date: April 11, 2023

By:	/s/ Fred Powell
Name:	Fred Powell
Title:	Chief Financial Officer (Principal Financial Officer)

EX-13.1

EXHIBIT 13.1

Certification by the Principal Executive Officer

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report of LAVA Therapeutics N.V. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steve Hurly, Director and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 11, 2023

By:	/s/ Steve Hurly
Name:	Steve Hurly
Title:	Director and Chief Executive Officer (Principal Executive Officer)

EX-13.2

EXHIBIT 13.2

Certification by the Principal Financial Officer

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report of LAVA Therapeutics N.V. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Fred Powell, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 11, 2023

By:	/s/ Fred Powell
Name:	Fred Powell
Title:	Chief Financial Officer (Principal Financial Officer)

EX-15.1

Exhibit 15.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-256655) and Form F-3 (No. 333-264246) of LAVA Therapeutics N.V. of our report dated April 11, 2023 relating to the financial statements, which appears in this Form 20-F.

/s/ drs. J.W. Middelweerd

PricewaterhouseCoopers Accountants N.V.

Utrecht, The Netherlands

April 11, 2023

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Document Period End Date	Dec. 31, 2022
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Entity Registrant Name	LAVA Therapeutics NV
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Entity Address, Address Line One	Yalelaan 62
Entity Address, Adress Line Two	CM
Entity Address, City or Town	Utrecht
Entity Address, Postal Zip Code	3584
Title of 12(b) Security	Common shares, par value $0.14 per share
Trading Symbol	LVTX
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	26,289,087
Entity Central Index Key	0001840748
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
ICFR Auditor Attestation Flag	false
Document Accounting Standard	International Financial Reporting Standards
Auditor Name	drs. J.W. Middelweerd RA
Auditor Firm ID	1395
Auditor Location	Utrecht, The Netherlands
Business Contact [Member]
Document Information [Line Items]
Entity Address State Or Province	PA
Entity Address, Address Line One	520 Walnut St
Entity Address, Adress Line Two	Suite 1150
Entity Address, City or Town	Philadelphia
Entity Address, Postal Zip Code	PA 19106
Contact Personnel Email Address	ir@lavatherapeutics.com
Contact Personnel Name	Lava Therapeutics, Inc

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Consolidated statements of loss and other comprehensive loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Research and license revenue	$ 19,391	$ 5,350	$ 3,747
Operating expenses:
Research and development	(40,105)	(36,945)	(15,701)
General and administrative	(14,124)	(12,018)	(2,719)
Total operating expenses	(54,229)	(48,963)	(18,420)
Operating loss	(34,838)	(43,613)	(14,673)
Interest income (expense), net	257	(625)	(342)
Foreign currency exchange gain (loss), net	2,923	2,040	(869)
Total non-operating income (loss)	3,180	1,415	(1,211)
Loss before income tax	(31,658)	(42,198)	(15,884)
Income tax expense	(249)	(157)	(43)
Loss for the year	(31,907)	(42,355)	(15,927)
Foreign currency translation adjustment	(6,749)	(5,642)	(202)
Total comprehensive loss	$ (38,656)	$ (47,997)	$ (16,129)
Loss per share:
Loss per share, basic	$ (1.23)	$ (2.14)	$ (39.91)
Loss per share, diluted	$ (1.23)	$ (2.14)	$ (39.91)
Weighted average common shares outstanding, basic	25,924,005	19,758,169	399,126
Weighted average common shares outstanding, diluted	25,924,005	19,758,169	399,126

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Consolidated statements of financial position - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Non-current assets:
Property and equipment, net	$ 1,432	$ 1,445
Right-of-use assets	651	501
Other non-current assets and security deposits	809	796
Total non-current assets	2,892	2,742
Current assets:
Receivables and other	3,254	363
Prepaid expenses and other current assets	4,411	2,568
VAT receivable		371
Investments	32,535	42,334
Cash and cash equivalents	100,333	90,869
Total current assets	140,533	136,505
Total assets	143,425	139,247
Equity:
Share capital	3,715	3,653
Equity-settled employee benefits reserve	8,942	4,829
Foreign currency translation reserve	(12,972)	(6,223)
Additional paid-in capital	194,424	192,270
Accumulated deficit	(108,069)	(76,162)
Total equity	86,040	118,367
Non-current liabilities:
Deferred revenue	35,000
Lease liabilities	431	320
License liabilities		5,028
Borrowings		4,284
Total non-current liabilities	35,431	9,632
Current liabilities:
Trade payables and other	3,965	2,553
VAT payable	45
Borrowings	4,640
Lease liabilities	379	261
License liabilities	4,732	5,028
Deferred revenue		1,527
Accrued expenses and other current liabilities	8,193	1,879
Total current liabilities	21,954	11,248
Total liabilities	57,385	20,880
Total equity and liabilities	$ 143,425	$ 139,247

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Consolidated statements of changes in equity - USD ($) $ in Thousands	Share capital Common share IPO	Share capital Common share Over-Allotment Option	Share capital Common share	Share premium Series A Preference Shares	Share premium Series B Preference Shares	Share premium Series C Preference Shares	Equity-settled employee benefits reserve	Foreign currency translation reserve	Additional paid-in capital Common share IPO	Additional paid-in capital Over-Allotment Option	Additional paid-in capital	Accumulated deficit	Series A Preference Shares	Series B Preference Shares	Series C Preference Shares	Common share IPO	Over-Allotment Option	Total
Beginning Balance at Dec. 31, 2019				$ 1,221	$ 18,340		$ 365	$ (378)				$ (13,704)						$ 5,844
Beginning Balance (in shares) at Dec. 31, 2019			447,525										1,755,845	3,899,766
Loss for period												(15,927)						(15,927)
Issuance of stock						$ 22,026												22,026
Issuance of stock (in shares)															4,133,805
Series A Preferred and common shares repurchase				(499)								(4,176)						(4,675)
Series A Preferred and common shares repurchase (in shares)			(165,750)										(718,250)
Share-based compensation expense							557											557
Foreign currency translation adjustment								(203)										(203)
Ending balance at Dec. 31, 2020				722	18,340	22,026	922	(581)				(33,807)						7,622
Ending balance (in shares) at Dec. 31, 2020			281,775										1,037,595	3,899,766	4,133,805
Loss for period												(42,355)						(42,355)
Share split			$ 1,308	(143)	(536)	(589)					$ (40)
Issuance of stock	$ 947	$ 61	1,425			60,373			$ 87,779	$ 5,877						$ 88,726	$ 5,939	61,798
Issuance of stock (in shares)	6,700,000	425,712													9,945,221
Series A Preferred and common shares repurchase			$ (122)	(400)							(4,760)							(5,282)
Series A Preferred and common shares repurchase (in shares)			(165,750)										(718,250)
Conversion of preference shares				$ (179)	$ (17,804)	$ (81,810)					99,793
Conversion of preference shares (in shares)			18,298,137										(319,345)	(3,899,766)	(14,079,026)
Issuance of VUmc common stock			$ 34								3,621							$ 3,655
Issuance of VUmc common stock (in shares)			235,664															235,664
Share-based compensation expense							3,907											$ 3,907
Foreign currency translation adjustment								(5,642)										(5,642)
Ending balance at Dec. 31, 2021			$ 3,653				4,829	(6,223)			192,270	(76,162)						118,367
Ending balance (in shares) at Dec. 31, 2021			25,775,538
Loss for period												(31,907)						(31,907)
Option exercises			$ 3								12							$ 15
Option exercises (in shares)			22,197															22,197
Issuance of VUmc common stock			$ 59								2,142							$ 2,201
Issuance of VUmc common stock (in shares)			491,352															491,352
Share-based compensation expense							4,113											$ 4,113
Foreign currency translation adjustment								(6,749)										(6,749)
Ending balance at Dec. 31, 2022			$ 3,715				$ 8,942	$ (12,972)			$ 194,424	$ (108,069)						$ 86,040
Ending balance (in shares) at Dec. 31, 2022			26,289,087

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Consolidated statements of changes in equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
IPO
Stock issued price per share	$ 15.00
Issuance costs	$ 11,500
Series C Preference Shares
Stock issued price per share	$ 6.22	$ 5.48
Issuance costs	$ 92	$ 647

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Consolidated statements of cash flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Loss before income tax	$ (31,658)	$ (42,198)	$ (15,884)
Adjusted for:
Depreciation and amortization of non-current assets	504	331	213
Foreign currency exchange (gain) loss, net	(2,923)	(2,040)	869
Amortization of right-of-use assets	277	227	251
Share-based compensation expense	4,113	3,907	557
Income tax expense	(249)	(157)	(43)
Amortization of premium on investments	(134)	446
Changes in working capital:
Receivables and other	(2,891)	777	(1,072)
VAT receivable	416	(35)	(186)
Prepaid expenses and other assets	(1,857)	(2,859)	(795)
Trade accounts payable and other	1,413	1,618	323
Deferred offering & financing costs		1,623	(323)
Deferred revenue	33,510	(4,649)	6,176
License liabilities	(2,828)	13,713
Other liabilities	6,350	649	607
Net cash provided by (used in) operating activities	4,043	(28,647)	(9,307)
Cash flows from investing activities:
Purchases of property and equipment	(587)	(764)	(502)
Purchases of investments	(70,877)	(45,291)
Maturities of investments	80,810	2,510
Net cash provided by (used in) investing activities	9,346	(43,545)	(502)
Cash flows from financing activities:
Proceeds from option exercises	15
Proceeds from common shares from initial public offering, net		94,189
Proceeds from Series C financing, net		61,798	22,025
Payment of Series A preferred and common shares repurchased		(5,167)	(4,849)
Proceeds from borrowings	611	680	2,033
Payment of principal portion of lease liabilities	(343)	(340)	(240)
Net cash provided by financing activities	283	151,160	18,969
Net increase in cash and cash equivalents	13,672	78,968	9,160
Cash and cash equivalents at beginning of year	90,869	15,818	7,338
Effects of exchange rate changes	(4,208)	(3,917)	(680)
Cash and cash equivalents at end of year	100,333	90,869	15,818
Supplemental schedule of noncash operating and financing activities:
Issuance of common shares to VUmc in lieu of payment for license liabilities	$ 2,201	$ 3,655
Deferred offering costs in accounts payable and accrued expenses			$ 489

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Consolidated statements of cash flows (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Consolidated statements of cash flows
Issuance of VUmc common stock (in shares)	491,352	235,664

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Corporate and Company information

12 Months Ended

Dec. 31, 2022

Corporate and Company information

Corporate and Company information

Corporate and Company information

1.1 Corporate Information

LAVA Therapeutics N.V., formerly LAVA Therapeutics B.V., was founded in 2016 and is incorporated and domiciled in the Netherlands. The Company’s registered office is Yalelaan 62, 3584 CM in Utrecht. The Company is registered at the Chamber of Commerce under number 65335740. In connection with becoming a public company on March 29, 2021, the Company changed its name from “LAVA Therapeutics, B.V.” to “LAVA Therapeutics N.V.”

The Company and its subsidiary are a clinical-stage immuno-oncology company dedicated to rapidly developing new cancer treatments that leverage the immune system to save patients’ lives. Using our Gammabody platform, the Company is developing a portfolio of novel bispecific antibodies designed to engage and leverage the potency and precision of gamma delta (gd) T cells to elicit a robust, natural anti-tumor immune response and improve outcomes for cancer patients. The Company is advancing its Gammabody pipeline for the development of potential therapeutics in both hematologic malignancies and solid tumors.

The consolidated financial statements of LAVA Therapeutics N.V. were authorized for issue by the Company’s board of directors on April 11, 2023.

1.2 Company information

The consolidated financial statements of the Company include:

			% of equity interest
Name	Legal seat	Country of incorporation	2022		2021
Lava Therapeutics N.V.	Utrecht	The Netherlands	100	%	100	%
Lava Therapeutics Inc.	Delaware	United States of America	100	%	100	%

The Company’s 100% subsidiary, LAVA Therapeutics, Inc., which was founded in August 2019, is incorporated in the United States of America and acts as a service provider to the parent, LAVA Therapeutics N.V.

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Summary of significant accounting policies

12 Months Ended

Dec. 31, 2022

Summary of significant accounting policies

Summary of significant accounting policies

2. Summary of significant accounting policies

The principal accounting policies applied in the preparation of these consolidated financial statements are included below. These policies have been consistently applied to all of the years presented, unless otherwise stated.

(a)Basis of preparation

The consolidated financial statements of the Company have been prepared in accordance with and comply with IFRS as issued by the IASB.

The consolidated financial statements of the Company have been prepared on a historical cost basis.

The preparation of the consolidated financial statements in conformity with IFRS requires the application of certain critical accounting estimates. It also requires management to exercise its judgment in the process of applying the accounting policies. The areas involving a greater degree of judgment or complexity, or areas in which assumptions and estimates are significant to the consolidated financial statements, are disclosed in Note 3.

Going concern

These consolidated financial statements have been prepared by management on the assumption that the Company will be able to continue as a going concern, which presumes that the Company will, for the foreseeable future, be able to realize its assets and discharge its liabilities in the normal course of business.

Through December 31, 2022, the Company funded its operations with proceeds from sales of equity financings, collaboration and licensing agreements, government grants and borrowings under various agreements. Since inception the Company has incurred recurring net losses. The Dutch Research and Development Act (WBSO) provides compensation for a part of research and development wages and other costs through a reduction in payroll taxes. WBSO grant amounts are offset against wages and salaries and included in research and development expenses in the consolidated statements of loss and comprehensive loss.

As of December 31, 2022, the Company had an accumulated deficit of $108.1 million. The Company expects to continue to generate operating losses in the foreseeable future. The Company expects that its cash, cash equivalents and investments of $132.9 million as of December 31, 2022 will be sufficient to fund its operating expenses and capital expenditure requirements for at least the next 12 months following the issuance of these financial statements. Accordingly, the consolidated financial statements have been prepared on a going concern basis.

Until we can generate sufficient product revenue to satisfy our cash requirements, which we may never do, we expect to finance our future cash needs through a combination of public or private equity offerings, debt financings, collaborations, strategic alliances, licensing arrangements and other marketing or distribution arrangements. Disruptions in the financial markets in general may make equity and debt financing more difficult to obtain and may have a material adverse effect on our ability to meet our fundraising needs. If we are unable to obtain sufficient funding in a timely manner or on commercially acceptable terms, we may have to delay, reduce the scope of, or eliminate one or more of our research programs, and consider other cost reduction initiatives, such as downsizing our operations or withholding initiation or expansion of clinical trials or research. In addition, in the event we are not able to generate sufficient funds, we may be unable to continue as a going concern and our business, financial condition and/or results of operations could be materially and adversely affected and could reduce the price of our common shares and we may ultimately go into insolvency. In addition, any perceived or actual inability by us to finance our clinical development activities and other business activities may cause the market price of our common shares to decline.

Global Conditions

In March 2020, the COVID-19 virus caused a worldwide pandemic. Although the pandemic has impacted the timing of onboarding investigational sites and enrolling patients in our ongoing Phase 1/2a clinical trial for LAVA-051 and LAVA-1207, to date we have not experienced any material business disruption or impact to our consolidated financial statements as a result of the pandemic.

In addition, there may be adverse effects on our business condition and results from general economic and market conditions and overall fluctuations in the United States and international equity markets, including deteriorating market conditions due to investor concerns regarding inflation and hostilities between Russia and Ukraine.

(b)Basis of consolidation

Subsidiaries are all entities over which the Company has control. Control is achieved when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are consolidated from the date on which control over the subsidiary is transferred to the Company and are deconsolidated from the date that control over the subsidiary ceases.

When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies into line with the Company’s accounting policies. All intercompany assets and liabilities, equity, income, expenses, and cash flows relating to transactions between members of the Company are eliminated in full on consolidation. Certain prior year amounts have been reclassified to reflect current year presentation.

c)Foreign currency

Items included in the financial statements of each of the Company’s entities are measured using the currency of the primary economic environment in which the entity operates. The Company’s consolidated financial statements are presented in USD. The parent company, LAVA Therapeutics N.V., has the functional currency of EUR. The subsidiary company, LAVA Therapeutics, Inc., has the functional currency of USD.

Foreign currency transactions are translated into the functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation of monetary assets and liabilities denominated in foreign currencies at year end exchange rates are recognized within foreign currency exchange gain (loss), net, in the consolidated statements of loss and comprehensive loss.

For presentation purposes in USD, all assets and liabilities denominated in foreign currencies are translated into USD using exchange rates in effect as of the date of the balance sheet date. Revenue and expense transactions are translated at the monthly average exchange rates, and certain specific equity transactions are translated at the exchange rate in effect at the time of the transaction. All resulting exchange differences were recognized within currency translation adjustment in the consolidated statements of loss and other comprehensive loss and as a separate component of shareholders’ equity.

d)Segment information

Operating segments are identified based on whether the allocation of resources and/ or the assessment of performance of a particular component of Company’s activities are regularly reviewed as a separate operating segment by Company’s Chief Operating Decision Maker. The Company’s business activities are organized into one reportable segment, which is consistent with the basis of the internal reports that the management regularly reviews in allocating resources and assessing performance.

e)Cash flow statement

The cash flow statement has been prepared using the indirect method. For the purposes of the consolidated statements of cash flows, cash and cash equivalents consist of cash and short-term deposits, as defined below, net of outstanding bank overdrafts.

f)Research and License Revenue

We may enter into collaboration and licensing arrangements for research and development, manufacturing, and commercialization activities with counterparties for the development and commercialization of our product candidates. These arrangements may contain multiple components, such as (i) licenses, (ii) research and development activities, and (iii) the manufacturing of certain materials. Payments pursuant to these arrangements may include non-refundable and refundable payments, payments upon the achievement of significant regulatory, development and commercial milestones, sales of product at certain agreed-upon amounts, and royalties on product sales.

In determining the appropriate amount of revenue to be recognized as we fulfill our obligations under a collaboration agreement, we perform the following steps: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are capable of being distinct; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue as we satisfy each performance obligation.

g)Research and development expenses

The Company expenses research and development expenses as incurred and does not capitalize them. The Company’s research and development expenses consist primarily of costs incurred in performing research

and development activities, including personnel-related expenses such as salaries, share-based compensation and benefits, facility costs, depreciation and external costs of outside vendors engaged to conduct preclinical and clinical development activities. The Company accounts for a governmental research and development payroll tax subsidy from Wet Bevordering Speur en Ontwikkelingswerk (WBSO) as a reduction of the research and development personnel-related expenses when incurred.

h)General and administrative expenses

The Company’s general and administrative expenses consist of personnel-related expenses for employees involved in general corporate functions, including accounting, finance, insurance, tax, legal and human relations, costs associated with outside professional fees such as legal counsel and auditors, costs associated with use by these functions of facilities and equipment, such as depreciation expenses, premises maintenance expenses and other general corporate expenses. General and administrative expenses are expensed as incurred.

i)Share-based awards

Share options granted to employees and consultants providing similar services are measured at the grant date fair value of the equity instruments granted. The grant date fair value is determined through the use of an option-pricing model considering the following variables:

a) the exercise price of the option;

b) the expected life of the option;

c) the current value of the underlying shares;

d) the expected volatility of the share price;

e) the dividends expected on the shares; and

f) the risk-free interest rate for the life of the option.

The Company accounts for these awards as equity-settled share-based payment awards. For the Company’s share option plans, management’s judgment is that the Black-Scholes valuation formula is the most appropriate method for determining the fair value of the options considering the terms and conditions attached to the grants made and to reflect exercise behavior. Prior to the Company’s IPO, as a private company there was no published share price information available. Consequently, the Company estimated the fair value of its shares and the expected volatility of that share value for option grants prior to the IPO. These assumptions and estimates are further discussed in Note 19 to the financial statements.

The result of the share option valuations and the related compensation expense that is recognized for the respective vesting periods during which services are received is dependent on the model and input parameters used. Even though management considers the fair values reasonable and defensible based on the methodologies applied and the information available, others might derive a different fair value for the options.

j)Employee benefits

The Company provides defined contribution plans to its employees. Contributions to defined contribution plans are expensed when employees provide services. The Company has no further payment obligations once the contributions have been paid. The Company’s post-employment schemes do not include any defined benefit plans. Expenses associated with the servicing of defined contribution plans were less than $0.1 million for each of the years ended December 31, 2022, 2021 and 2020.

k)Income taxes

Income tax expense comprises current and deferred tax. It is recognized in profit or loss except to the extent that it relates to a business combination, or items recognized directly in equity or in other comprehensive

income. Current tax comprises the expected tax payable or receivable on the taxable income or loss for the year and any adjustment to tax payable or receivable in respect of previous years. It is measured using tax rates enacted or substantively enacted at the reporting date. Current tax also includes any tax arising from dividends. Current tax assets and liabilities are offset only if certain criteria are met.

Deferred tax is recognized in respect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. Deferred tax is not recognized for:

● temporary differences on the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither accounting nor taxable profit or loss;

● temporary differences related to investments in subsidiaries, associates, and joint arrangements to the extent that the Company is able to control the timing of the reversal of the temporary differences and it is probable that they will not reverse in the foreseeable future; and

● taxable temporary differences arising on the initial recognition of goodwill.

Deferred tax assets are recognized for unused tax losses, unused tax credits and deductible temporary differences to the extent that it is probable that future taxable profits will be available against which they can be used. Deferred tax assets are reviewed at each reporting date and are reduced to the extent that it is no longer probable that the related tax benefit will be realized; such reductions are reversed when the probability of future taxable profits improves.

Unrecognized deferred tax assets are reassessed at each reporting date and recognized to the extent that it has become probable that future taxable profits will be available against which they can be utilized.

Deferred tax is measured at the tax rates that are expected to be applied to temporary differences when they reverse, using tax rates enacted or substantively enacted at the reporting date.

The measurement of deferred tax reflects the tax consequences that would follow from the manner in which the Company expects, at the reporting date, to recover or settle the carrying amount of its assets and liabilities.

l)Cash and cash equivalents

Cash and cash equivalents in the consolidated statements of financial position comprise of cash at banks and on hand and short-term deposits with a maturity of three months or less, which are subject to an insignificant risk of changes in value.

For the purposes of the consolidated statements of cash flows, cash and cash equivalents consist of cash and short-term deposits, as defined above, net of outstanding bank overdrafts.

m)Investments

Our investments in debt securities consist entirely of investments in U.S. Treasury securities, with maturities ranging from three months to one year. All of these investments are classified as current assets in our consolidated statements of financial position. We have the intent and ability to hold all investments in debt securities until maturity. Accordingly, all investments are recorded at amortized cost on our consolidated statements of financial position, with the amortization of premiums or discounts and earned interest income recorded in our consolidated statements of loss.

n)Property and equipment

Property, plant, and equipment are stated at cost less accumulated depreciation and accumulated impairment losses, if any. The cost of an item of property, plant and equipment is recognized as an asset if it is probable that future economic benefits associated with the item will flow to the entity and the cost of the item can be measured reliably.

Property, plant, and equipment include major expenditures for new assets, improvements and replacement assets that extend the useful lives of assets or increase their revenue-generating capacities. Repair and maintenance costs are expensed as incurred.

Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets, as follows:

Building improvements	10
Laboratory equipment	5
Office equipment	5
Information and communication equipment (ICT)	5

The estimated useful life for building improvements is the shorter of the estimated useful life and the lease term. Depreciation of property, plant and equipment used for laboratory equipment and ICT equipment is included within research and development expenses in the consolidated statements of loss and other comprehensive loss. Depreciation of all other property, plant and equipment is allocated between research and development and general and administrative expenses based on headcount.

The carrying amount of an item of property, plant and equipment is derecognized on disposal, or when no future economic benefits are expected from its use or disposal. The gain or loss arising from the derecognition of an item of property, plant, and equipment (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in “Gain / (loss) on disposal of non-current assets, net” in the consolidated statements of loss and other comprehensive loss when the asset is derecognized.

Management reviews the carrying amount of property, plant, and equipment for impairment when there is an indication that the carrying amount may exceed the expected recoverable amount.

o)Impairment of long-lived assets

Assets that are subject to depreciation or amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. An impairment loss is recognized in the consolidated statements of loss and other comprehensive loss consistent with the function of the assets, for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s fair value less costs of disposal and value in use. For the purposes of assessing impairment, assets are grouped at the lowest levels for which there are largely independent cash inflows. Prior impairments of non-financial assets (other than goodwill) are reviewed for possible reversal each reporting period.

p)Provisions

Provisions are recognized when the Company has a present obligation (legal or constructive) as a result of a past event, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimate. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provision is reversed.

q)Value added tax

Expenses and assets are recognized net of the amount of value added tax (VAT) except when the VAT incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case the VAT is recognized as part of the cost of acquisition of the asset or as part of the expense item.

The net amount of the VAT recoverable from, or payable to, the taxation authority is included as part of receivables or payables in the consolidated statements of financial position.

r)Financial instruments

(i) Financial assets

The Company’s financial assets are comprised of cash and cash equivalents, investments, trade and other receivables, security deposits, other current and non-current assets. All financial assets are recognized initially at fair value plus transaction costs that are attributable to the acquisition of the financial asset, and follow our business model of standard working capital purposes. Purchases and sales of financial assets are recognized on the settlement date; the date that the Company receives or delivers the asset. The Company classifies its financial assets primarily as cash and cash equivalents and receivables. Receivables are non-derivative financial assets, with fixed or determinable payments that are not quoted in an active market. They are included in current assets.

Financial assets are derecognized when the rights to receive cash flows from the asset have expired, or the Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full.

(ii) Financial liabilities

The Company’s financial liabilities are comprised of trade and other payables, lease liabilities, and borrowings. All financial liabilities are recognized initially at fair value, adjusted for transaction costs.

After initial recognition, borrowings are subsequently measured at amortized cost using the effective interest method. The effective interest method amortization is included in finance costs in the consolidated statements of loss and other comprehensive loss.

Payables and borrowings are classified as current liabilities unless the Company has an unconditional right to defer settlement of the liability for at least the next 12 months after the reporting date.

Financial liabilities are derecognized when the obligation under the liability is discharged, cancelled, or expires.

(iii) Fair value measurements

The Company does not hold any financial assets and financial liabilities other than those measured at amortized cost, as our business model is such that we have the intent to hold these instruments for the sole purpose of collecting contractual cash flows, and the contractual terms give rise to cash flows that are solely for payments of principal and interest. Management assessed that the carrying values of the Company’s financial assets and financial liabilities measured at amortized cost are a reasonable approximation of their fair values.

s)Leases

The Company is party to lease contracts relating to laboratory and office facilities located in the Netherlands and the U.S.

(i) Right-of-use assets

The Company recognizes right-of-use assets at the commencement date of the lease (i.e., the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities. The recognized right-of-use assets are depreciated on a straight-line basis over the shorter of its estimated useful life and the lease term. Right-of- use assets are subject to impairment.

(ii) Lease liabilities

At the commencement date of the lease, the Company recognizes lease liabilities measured at the present value of lease payments to be made over the lease term. The lease payments include fixed payments

(including in substance fixed payments) less any lease incentives receivable, variable lease payments that depend on an index or a rate, and amounts expected to be paid under residual value guarantees.

In calculating the present value of lease payments, the Company uses the incremental borrowing rate at the lease commencement date if the interest rate implicit in the lease is not readily determinable. After the commencement date, the amount of lease liabilities is increased to reflect the accretion of interest and reduced for the lease payments made. In addition, the carrying amount of lease liabilities is remeasured if there is a modification, a change in the lease term, a change in the in-substance fixed lease payments or a change in the assessment to purchase the underlying asset.

t)Revision of immaterial misstatements

During the year ended December 31, 2022, the Company identified misstatements in its historical accounting for foreign currency translations and share-based compensation expenses in the consolidated financial statements for certain prior periods. Management evaluated the misstatements and concluded that they were immaterial, either individually or in the aggregate, to its current or previously issued consolidated financial statements. As a result, certain comparative amounts in the consolidated statements of profit and loss and comprehensive profit and loss, financial position, changes in equity and cash flows have been revised to correct for such immaterial misstatements with respect to foreign currency translations and share-based compensation expenses. Such revisions and their impact are disclosed more fully in Note 23, “Revision of Immaterial Misstatements.”

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Material accounting judgments, estimates and assumptions

12 Months Ended

Dec. 31, 2022

Material accounting judgments, estimates and assumptions

Material accounting judgments, estimates and assumptions

3. Material accounting judgments, estimates and assumptions

The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of revenues, expenses, assets, liabilities, and equity in the consolidated financial statements and the accompanying disclosures. Estimates and judgments are based on historical experience and other factors, including expectations of future events, and are continually evaluated. Uncertainty about these assumptions and estimates could result in outcomes that require a material adjustment to the carrying amount of assets or liabilities affected in future periods.

Judgments

In the process of applying the Company’s accounting policies, management has made the following judgments, which have the most significant effect on the amounts recognized in the consolidated financial statements:

Clinical trial expenses

As part of the process of preparing our financial statements, we are required to estimate our clinical trial expenses. Our clinical trial accrual process seeks to account for expenses resulting from our obligations under contracts with vendors, consultants and CROs and clinical site agreements in connection with conducting clinical trials. The financial terms of these contracts are subject to negotiations, which vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided to us under such contracts. Our objective is to reflect the appropriate clinical trial expenses in our financial statements by matching the appropriate expenses with the period in which services and efforts are expended. We account for these expenses according to the progress of the trial as measured by subject progression and the timing of various aspects of the trial.

We determine accrual estimates based on estimates of the services received and efforts expended that take into account discussion with applicable personnel and outside service providers as to the progress or state of completion of trials. During the course of a clinical trial, we adjust our clinical expense recognition if actual results differ from our estimates. We make estimates of our accrued expenses and prepaid assets as of each balance sheet date in our financial statements based on the facts and circumstances known to us at that time. Our clinical trial accrual and prepaid assets are dependent, in part, upon the receipt of timely and accurate reporting from CROs and other third-party vendors. Although we do not expect our estimates to differ

materially from amounts we actually incur, our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in us reporting amounts that are too high or too low for any particular period.

Deferred tax assets

Deferred tax assets have not been recognized in respect of tax losses and capitalization of IP development costs for Dutch corporate income tax purposes, because the Company has no history of generating taxable profits and at the statement of financial position date, there is no convincing evidence that sufficient taxable profit will be available against which the tax losses can be utilized.

In order to promote innovative technology development activities and investments in new technologies, a corporate income tax incentive has been introduced in Dutch tax law called the Innovation Box. Profits from self-developed qualifying intangible assets are effectively subject to a 9% income tax rate for 2021 and future years, instead of the general headline rate of 25.8% as of 2022. LAVA Therapeutics N.V. believes it qualifies for the Innovation Box and is in this respect currently in a process for obtaining advance certainty from the Dutch tax authorities.

Estimates and assumptions

The key assumptions concerning the future and other key sources of estimation uncertainty at the reporting date, which have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year, are described below. The Company based its assumptions and estimates on parameters available when the consolidated financial statements were prepared. Existing circumstances and assumptions about future developments, however, may change due to market changes or circumstances arising that are beyond the control of the Company. Such changes are reflected in the assumptions when they occur.

Research and license revenue

We must develop estimates and assumptions that require judgment to determine the underlying stand-alone selling price for each performance obligation, which determines how the transaction price is allocated among the performance obligations. The estimation of the stand-alone selling price may include such estimates as forecasted revenues and costs, development timelines, discount rates and probabilities of regulatory and commercial success. We also apply significant judgment when evaluating whether contractual obligations represent distinct performance obligations, allocating transaction price to performance obligations within a contract, determining when performance obligations have been met, assessing the recognition and future reversal of variable consideration and determining and applying appropriate methods of measuring progress for performance obligations satisfied over time.

New standards, interpretations and amendments adopted by the Company

In May 2021, the IASB issued amendments to IAS 12 – Income Taxes, Deferred Tax related to Assets and Liabilities arising from a Single Transaction. The amendments narrowed the scope of the recognition exemption in paragraphs 15 and 24 of IAS 12 (recognition exemption) so that it no longer applies to transactions that, on initial recognition, give rise to equal taxable and deductible temporary differences. The amendments are effective for annual reporting periods beginning on or after January 1, 2023. Early adoption is permitted. The Company has not early adopted these amendments, and does not expect the adoption of these amendments to have a material impact on our consolidated financial statements.

The Company has not early adopted any standards, interpretations or amendments that have been issued, but are not yet effective. The Company intends to adopt these new and amended standards and interpretations, if applicable, when they become effective. There are no standards presently known that are not yet effective and that would be expected to have a material impact on the Company in current or future reporting periods and on foreseeable future transactions.

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Revenue

12 Months Ended

Dec. 31, 2022

Revenue

Revenue

4. Revenue

Seagen Agreement

In September 2022, we entered into an exclusive worldwide license agreement with Seagen (Seagen Agreement) to develop, manufacture and commercialize SGN-EGFRd2 (LAVA-1223), an advanced preclinical asset that utilizes LAVA’s proprietary Gammabody technology to target EGFR-expressing solid tumors. Under the terms of the agreement, we received a $50.0 million nonrefundable upfront payment in October 2022 and could receive up to approximately $650.0 million in potential development, regulatory and commercial milestones, and royalties ranging from high single-digit to mid-teen percentages on future sales, within a range of less than 10%. The agreement also provides Seagen with the opportunity to exclusively negotiate rights to apply LAVA's proprietary Gammabody platform on up to two additional tumor targets.

We are entitled to receive tiered royalties based on commercial sales levels from mid-single to double digit percentages of net sales of licensed products. Seagen has also granted us a one-time option to obtain increased royalties if we exercise a buy-up option within a certain amount of time from certain key early clinical data becoming available for the first licensed product. We have a specified period of time after notice of such buy-up option to pay Seagen a one-time fee of $35.0 million (buy-up fee). In the event we exercise the buy-up option and pay the buy-up fee, we are entitled to receive increased future royalty percentages to a range of low double-digit to high mid-teen percentages on future sales, within a range of less than 10%, and certain future milestones will be decreased by 30%.

Royalties are payable on a licensed product-by-licensed product and country-by-country basis beginning with the first commercial sale of such licensed product in such country of sale and expiring ten years after such sale, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory.

Under the Seagen Agreement we are also entitled to receive reimbursement of up to $6.5 million for certain agreed to research, manufacturing and supply activities, as well as the transfer of all manufacturing-related know-how and materials, including all CMC documentation, data and processes, to enable the manufacture of licensed compounds and products by Seagen.

We determined that the Seagen Agreement and the research, manufacturing and supply activities and materials transfer fall within the scope of IFRS 15, Revenue from Contracts with Customers (IFRS 15). In calculating the transaction price, we determined the following four performance obligations under the agreement: (i) provide exclusive license; (ii) provide manufacturing technology transfer activities; (iii) provide initial drug supply; and (iv) research activities, including data and support for regulatory submission.

As of the agreement date in September 2022, we allocated the transaction price to the performance obligations described above as follows:

			Cumulative
	Transaction		Revenue		Contract
(in thousands)	Price		Recognized		Asset
License	$	50,000	$	15,165	$	—
Manufacturing technology transfer activities		2,167		2,073		—
Initial supply		3,583		—		3,309
Research activities		750		663		—
Buy-up fee		(35,000)		—
	$	21,500	$	17,901	$	3,309

For each of the performance obligations described above, we have determined the following methods of revenue recognition:

● License: We recognized revenue from the license at a point in time. Upon signing the Seagen Agreement, ownership of the license was immediately transferred to Seagen. We no longer have any rights to the license other than to fulfill our obligations under the Seagen Agreement, and we do not have the obligation to improve, modify or update the license transferred. As such there is no significant continued involvement in the license provided. Seagen can begin to use and benefit from the license after effective date of the Agreement as they are now the sole ‘owner’ of the underlying patents and know-how. In connection with the license performance obligation, we recognized revenue of $15.2 million for the year ended December 31, 2022. See below for further discussion on the considerations of the buy-up fee.

● Manufacturing technology transfer activities: We recognize manufacturing technology transfer activities over time. These activities under the Seagen Agreement are performed by us at the direction of Seagen. As such, we record revenue related to these activities over time as they occur, measured based on a cost-to-cost method. Based on the manufacturing technology transfer activities performed during the year ended December 31, 2022, we recognized revenue and recorded a receivable of $2.1 million. We expect the remainder of revenue related to this performance obligation to be recognized in 2023.

● Initial supply: We recognize revenue from the initial supply of drug product at a point in time. We have recorded $3.3 million in prepaid expenses and other current assets, representing the value of the initial supply of drug product we have developed. In doing so, we also reduced research and development expenses related to this drug supply previously recorded. We are obligated to transfer this initial supply to Seagen after entering into a separate supply and materials transfer agreement with Seagen. This supply and materials transfer agreement was executed in January 2023. We will recognize revenue at the point in time that the supply and materials transfer agreement is executed, and we transfer the initial supply of drug product to Seagen. Once transferred to Seagen, we have no further rights or ownership to the drug product. We did not recognize any revenue related to the initial supply of drug product for the year ended December 31, 2022. We expect the revenue related to this performance obligation to be recognized in 2023.

● Research activities: We recognize research activities over time. These activities under the Seagen Agreement are performed by us at the direction of Seagen. As such, we record revenue related to these activities over time as they occur, measured based on a cost-to-cost method. Based on the manufacturing and supply activities performed during the year ended December 31, 2022, we recognized revenue and recorded a receivable of $0.7 million. We expect the remainder of revenue related to this performance obligation to be recognized in 2023.

● Buy-up fee: We recognize revenue from the buy-up fee at a point in time. We determined that the one-time buy-up fee of $35.0 represents variable consideration, for which we have deferred revenue recognition until such time the option is exercised or expires. Accordingly, we received the non-refundable upfront payment of $50.0 million in October 2022, and recorded a deferred revenue liability of $35.0 million on our consolidated statement of financial position as of December 31, 2022. If we do not exercise this buy-up option, the revenue related to this performance obligation will be recognized. If we do exercise this buy-up option, this amount will be accounted for as a refund of the transaction price to the customer. We expect the ability for us to make a decision on whether or not to exercise the buy-up option to occur in 2026.

Janssen Agreement

In May 2020, the Company entered into a research collaboration and license agreement (Janssen Agreement) with Janssen Biotech, Inc. (Janssen). As part of the Janssen Agreement, the Company received a non-refundable upfront payment of $8.0 million, which was recognized on a straight-line basis over the two-year term of the research activities under the agreement. The straight-line method of recognition materially approximates the cost-to-cost method of revenue recognition. As of December 31, 2022, we had no remaining unearned income related to this payment. Revenues for the year ended December 31, 2021 have been revised for certain immaterial misstatements relating to foreign currency translation. Further information regarding the misstatements and related revision is included in Note 23 - Revision of Immaterial Misstatements.

The Company is entitled to receive tiered royalties based on commercial sales levels from low to mid-single digit percentages of net sales of licensed products. Royalties are payable on a licensed product-by-licensed product and country-by-country basis beginning with the first commercial sale of such licensed product in such country of sale and expiring ten years after such sale, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory and expires 10 years after such sale. The Company is eligible to receive a research milestone and further payments upon the achievement of certain development and commercial milestones.

Development milestones

In December 2020, the Company achieved the first Research Milestone, as defined in the Janssen Agreement, triggering a milestone payment of $1.0 million. In September 2021, the Company achieved the second Research Milestone, triggering a milestone payment of $1.0 million. Revenue for these development milestones was recognized at the point in time the milestone was achieved.

Deferred Revenue

The Company’s deferred revenue balance relates to amounts received, but not yet earned under both the Janssen Agreement and Seagen Agreement as described above. As of December 31, 2021, the deferred revenue balance related only to the Janssen Agreement, which was fully recognized in 2022. As of December 31, 2022, we established a deferred revenue balance related to the Seagen Agreement buy-up option as described above. The following table presents changes in the deferred revenue balance:

(in thousands)
Balance at January 1, 2021	$	(6,176)
Recognized during the period		4,354
Foreign currency translation difference		295
Balance at December 31, 2021		(1,527)
Deferral of revenue		(35,000)
Recognized during the period		1,490
Foreign currency translation difference		37
Balance at December 31, 2022	$	(35,000)

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Research and development expenses

12 Months Ended

Dec. 31, 2022

Research and development expenses

Research and development expenses

5. Research and development expenses

Research and development expenses include the following categories:

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Pre-clinical and clinical trial expenses	$	28,178	$	14,188	$	11,325
Personnel-related expenses		6,150		4,955		2,276
Research and development activities expenses		2,241		1,843		1,022
Share-based compensation expense		1,975		788		232
Facilities and other research and development expenses		1,546		814		643
VUmc and other license expenses		15		14,357		203
	$	40,105	$	36,945	$	15,701

Refer to Note 22 for additional information about VUmc license expenses. Government grants, which are a reduction of payroll taxes in the Netherlands, amounted to $1.6 million in 2022, $1.7 million in 2021, and $1.0 million in 2020. These amounts are an offset to wages and salaries that are part of our research and development expenses in the income statement. The increase in the respective periods was primarily due to increased research activities in the Netherlands.

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General and administrative expenses

12 Months Ended

Dec. 31, 2022

General and administrative expenses

General and administrative expenses

6. General and administrative expenses

General and administrative expenses include the following categories:

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Personnel-related expenses	$	5,010	$	3,800	$	1,474
Professional and consultant fees		3,954		2,593		683
Insurance, facilities, fees and other related costs		3,022		2,506		236
Share-based compensation expense		2,138		3,119		326
	$	14,124	$	12,018	$	2,719

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Interest (income) expense, net

12 Months Ended

Dec. 31, 2022

Interest (income) expense, net

Interest (income) expense, net

7. Interest (income) expense, net

	For the Year Ended December 31,
(in thousands)	2022			2021		2020
Interest (income) expense on borrowings and deposits, net	$	(339)	$	564	$	253
Interest expense related to leases		82		61		89
	$	(257)	$	625	$	342

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Foreign currency exchange gain (loss), net

12 Months Ended

Dec. 31, 2022

Foreign currency exchange gain (loss), net

Foreign currency exchange gain (loss), net

8. Foreign currency exchange gain (loss), net

Changes in foreign currency exchange gain (loss), net were primarily due to the impact of the fluctuation of the USD currency rate compared to the Euro on transaction gains and losses on cash and investments and other transactions denominated in USD held and occurring in a Euro functional currency entity. Foreign currency exchange loss for the years ended December 31, 2022, 2021 and 2020 were $2.9 million, $2.0 million, and $0.9 million, respectively. Refer to Note 23 for additional information regarding the revision of immaterial misstatements affecting these amounts.

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Taxation

12 Months Ended

Dec. 31, 2022

Taxation

Taxation

9. Taxation

The Company is subject to income taxes in the Netherlands and the United States.

Netherlands

No tax charge or income was recognized during the reporting periods since the Company is in a loss-making position and has a history of losses. As of December 31, 2022 the Company has Dutch tax loss carryforwards of $5.9 million. The 2022 and 2021 taxable amounts are not final as the 2022 and 2021 Dutch corporate income tax return are still in draft. The 2020 Dutch corporate income tax return is final and has been filed.

As a result of the Dutch corporate income tax law, tax loss carryforwards are not subject to a time limitation and remain available for offset indefinitely. Actual offset of these losses is however limited to 50% of the taxable amount that exceeds EUR 1 million (previously losses carry forward were subject to a time limitation of six years whereas losses from 2018 and prior years were subject to a time limitation of nine years – all losses that were still available for offset on 1 January 2022 became available for offset indefinitely).

The following table provides an overview of our unrecognized tax loss carryforwards by year:

(in thousands)	Loss per year
2017	$	862
2018		2,756
2019		1,084
2020		—
2021		908
2022		289
	$	5,900

In order to promote innovative technology development activities and investments in new technologies, a

corporate income tax incentive has been introduced in Dutch tax law called the “Innovation Box.” The effective rate for Innovation Box profits is 9%. Lava Therapeutics N.V. has applied for the Innovation Box and its request is currently under final review with the Dutch Tax Authorities. For tax purposes, we capitalized IP development costs of $27.8 million, $33.9 million and $14.6 million in our tax returns for the years ended 2022, 2021 and 2020, respectively. In total, $84.1 million of IP development costs was capitalized. This amount will reduce future taxable income due to future tax amortization of capitalized IP development costs. The deferred tax asset have not been recognized.

On the basis of the 2022 annual accounts, there are accounting-to-tax differences of $32 million. These differences primarily relate to capitalization of IP development costs for Dutch corporate income tax purposes and IFRS 16 lease amounts. Permanent differences relate to non-deductible share-based payment expenses, expenses which were treated as non-deductible for Dutch corporate income tax purposes and other non-deductible mixed expenses.

Deferred income tax assets can only be recognized for tax losses and capitalization of IP development costs for Dutch corporate tax purposes to the extent that the realization of the related tax benefit through future taxable profits is probable. The Company recognizes deferred tax assets arising from unused tax losses or tax credits only to the extent there is convincing other evidence that sufficient taxable profit will be available against which the unused tax losses or unused tax credits can be utilized by the Company. Management concluded that there is not sufficient probability as per IAS 12, Income Taxes, that there will be future taxable profits available in the foreseeable future against which the unused tax losses and deduction of capitalized IP development costs can be used; therefore, a deferred tax asset has not been recognized.

The statute of limitation in the Netherlands is five years, starting from the day after the end of the tax year and any extensions granted for filing the corporate income tax returns. The tax authorities are allowed to audit years for which a final assessment has already been imposed. Since our inception was in 2016, all tax years are currently open for an audit by the Dutch tax authorities.

United States

A tax charge was recognized during the reporting periods due to the U.S. profitable position. The activities of LAVA Therapeutics, Inc. are limited and regard only to the CEO, CFO and CMO for LAVA Therapeutics N.V. and related staff who are domiciled in the U.S. The remuneration of LAVA Therapeutics, Inc. is based on the costs incurred for the services rendered including a profit mark-up.

Reconciliation of income tax expense at statutory tax rate and the income expenses as reported in the consolidated statement of loss and other comprehensive income is as follows:

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Loss before income tax	$	(31,658)	$	(42,198)	$	(15,884)
Computed 25.8% tax on Loss (2021/2020: 25%)		(8,168)		(10,549)		(3,971)
Tax effect of:
Non-deductible costs		1,080		982		124
Unrecognized deferred tax for losses and temporary differences		7,192		9,435		3,939
Difference in overseas tax rates		72		46		30
Change in deferred tax asset		72		244		(18)
Previously unrecognized tax losses now recouped to reduce current tax expense		—		—		(61)
Total corporate tax	$	249	$	157	$	43
Effective tax rate		(0.8)%		(0.4)%		(0.3)%
	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Current tax on result	$	249	$	139	$	61
Deferred tax prior years		—		18		—
Deferred tax current year		(7,264)		(9,679)		(3,921)
Movement valuation allowance		7,264		9,679		3,903
Total corporate tax expense	$	249	$	157	$	43

Unrecognized deferred tax assets

Deferred tax assets have not been recognized in respect of the following items, because it is not probable that future taxable profit will be available against which the Company can use the benefit therefrom.

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Deductible temporary differences	$	83,933	$	59,683	$	25,668
Tax losses		5,900		5,747		5,218
Total unrecognized deferred tax assets	$	89,833	$	65,429	$	30,886
Total tax effect 25.8% (2021/2020: 25%)	$	23,177	$	16,357	$	7,722

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Earnings per share (EPS)

12 Months Ended

Dec. 31, 2022

Earnings per share (EPS)

Earnings per share (EPS)

10. Earnings per share (EPS)

Basic EPS is calculated by dividing the profit/(loss) for the period attributable to common equity holders of the parent by the weighted average number of common shares outstanding during the period.

Diluted EPS is calculated by dividing the profit/(loss) attributable to common equity holders of the parent (after adjusting for the effect of dilution) by the weighted average number of common shares outstanding after adjustments for the effects of all dilutive potential common shares.

As of December 31, 2022, 2021 and 2020, outstanding share-based awards were excluded from the diluted weighted average number of common shares calculation because their effect would have been anti-dilutive.

The following table reflects the loss and share data used in the basic and diluted EPS calculations:

	For the Year Ended December 31,
(in thousands, except for share and per share amounts)	2022		2021		2020
Loss for the year	$	(31,907)	$	(42,355)	$	(15,927)
Weighted average number of common shares		25,924,005		19,758,169		399,126
Basic and diluted loss per share	$	(1.23)	$	(2.14)	$	(39.91)

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Property and equipment

12 Months Ended

Dec. 31, 2022

Property and equipment

Property and equipment

11. Property and equipment

Movements in property and equipment were as follows:

	Building		Laboratory		Office		ICT
(in thousands)	improvements		equipment		equipment		equipment		Total
Cost
Balance at January 1, 2021	$	112	$	1,162	$	38	$	139	$	1,451
Additions		20		679		—		65		764
Foreign currency translation adjustment		(9)		(117)		(2)		(12)		(140)
Balance at December 31, 2021		123		1,724		36		192		2,075
Additions		—		525		6		56		587
Foreign currency translation adjustment		(6)		(108)		(2)		(10)		(126)
Balance at December 31, 2022	$	117	$	2,141	$	40	$	238	$	2,536
Accumulated depreciation
Balance at January 1, 2021	$	8	$	290	$	11	$	29	$	338
Charge for the year		12		280		8		31		331
Foreign currency translation adjustment		(1)		(32)		(3)		(3)		(39)
Balance at December 31, 2021		19		538		16		57		630
Charge for the year		87		366		8		43		504
Foreign currency translation adjustment		(1)		(26)		—		(3)		(30)
Balance at December 31, 2022	$	105	$	878	$	24	$	97	$	1,104
Carrying amounts
Property and equipment, net at December 31, 2021	$	104	$	1,186	$	20	$	135	$	1,445
Property and equipment, net at December 31, 2022	$	12	$	1,263	$	16	$	141	$	1,432

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Leases

12 Months Ended

Dec. 31, 2022

Leases

Leases

12. Leases

The following table provides information about the Company’s right-of-use assets:

(in thousands)
Balance at January 1, 2021	$	382
Additions		382
Depreciation charges		(227)
Foreign currency exchange difference		(36)
Balance at December 31, 2021		501
Additions		400
Depreciation charges		(277)
Foreign currency exchange difference		27
Balance at December 31, 2022	$	651

The following table provides information about the maturities of the Company’s lease liabilities at December 31, 2022:

(in thousands)
2023	$	459
2024		284
2025		206
2026		—
Total lease commitments		949
Less: imputed lease interest		(139)
Total lease liabilities	$	810
Current portion	$	379
Non-current portion	$	431

The average incremental borrowing rate applied to the lease liabilities was 15.69% and 15.78% during the years ended December 31, 2022 and 2021, respectively.

Cash outflows related to leases during the years ended December 31, 2022, 2021 and 2020 were $0.3 million, $0.3 million and $0.2 million, respectively.

Our leases consist of leases for office and laboratory space in the Netherlands and the U.S., expiring in 2025 and 2026. Both leases contain renewal options which we concluded are not reasonably certain to be exercised, and therefore did not include the effects of the extension options in the measurement of the lease liabilities and right-of-use assets. All leasehold improvements were paid for in full by us.

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Investments

12 Months Ended

Dec. 31, 2022

Investments.

Investments

13. Investments

Our investments in debt securities consist of investments in U.S. Treasury securities, with maturities ranging from three months to one year. All of these investments are classified as held to maturity and recorded in current assets on our consolidated statements of financial position at amortized cost. As of December 31, 2022, the carrying value of our investments was $32.5 million, which approximates fair value. Given the high quality ratings of these investments in debt securities, we have not recorded an allowance for credit losses as of December 31, 2022.

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Cash and cash equivalents

12 Months Ended

Dec. 31, 2022

Cash and cash equivalent

Cash and cash equivalents

14. Cash and cash equivalents

		As of December 31,
(in thousands)		2022		2021
Short-term deposits	$	9,965	$	76,504
Current bank accounts		90,368		14,365
	$	100,333	$	90,869

Short-term deposits are made for varying periods of between one day and three months, depending on the immediate cash requirements of the Company, and earn interest at the respective short-term deposit rates. Information about the credit risk over cash and cash equivalents is presented in Note 21.

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Share capital, share premium and other capital reserves

12 Months Ended

Dec. 31, 2022

Share capital, share premium and other capital reserves

Share capital, share premium and other capital reserves

15. Share capital, share premium and other capital reserves

The following table provides information about the Company’s share capital as of December 31, 2022, 2021 and 2020:

(in thousands, except	Authorized			Issued and fully paid			Additional paid-in capital				Share premium
for share and per	December 31,			December 31,			December 31,				December 31,
share amounts)	2022	2021	2020	2022	2021	2020	2022		2021		2020
Common shares of $0.01 each	—	—	447,525	—	—	281,775	$	—	$	—	$	—
Preference Series A shares of $0.01 each	—	—	1,755,845	—	—	1,037,595		—		—		722
Preference Series B shares of $0.01 each	—	—	3,899,766	—	—	3,899,766		—		—		18,340
Preference Series C shares of $0.01 each	—	—	4,133,805	—	—	4,133,805		—		—		22,026
Preference shares of $0.01 each	—	—	9,789,416	—	—	9,071,166		—		—		41,088
Preference shares of $0.14 each	45,000,000	45,000,000	—	—	—	—		—		—		—
Common shares of $0.14 each	45,000,000	45,000,000	—	26,289,087	25,775,538	—		194,424		192,270		—
	90,000,000	90,000,000	10,236,941	26,289,087	25,775,538	9,352,941	$	194,424	$	192,270	$	41,088

Preferred Series Shares

In 2017, the Company issued and sold 1,755,845 Series A Preferred at a price of $0.68 per share for gross proceeds of $1.2 million. The Company incurred minimal issuance costs.

In 2018, the Company issued and sold 3,899,766 Series B Preferred at a price of $4.61 per share for gross proceeds of $17.9 million. The Company incurred minimal issuance costs.

In 2020, the Company closed an oversubscribed financing of Series C Preferred that resulted in tranche-based commitments of $84.4 million gross and $73.2 million net. In connection with the Series C Preferred financing, the Company agreed to sell the Series C Preferred in three tranches. In connection with the funding of the tranches the Company was obligated to repurchase 1,436,500 shares of Series A preferred of approximately $10.3 million and 331,500 common shares.

In 2020, the first tranche of gross proceeds of $22.7 million, with $0.6 million of issuance costs and 4,133,805 shares of Series C Preferred, was funded, and 718,250 shares amounting to $4.9 million of Series A Preferred were repurchased, resulting in net proceeds of $17.2 million.

In 2021, the Company effected a 221:1 share split of the Company’s issued and outstanding common shares and a proportional adjustment to the existing conversion ratios for the Company’s convertible preferred shares. The par value per share and authorized common and convertible preferred shares were adjusted as a

result of the share split. All common shares and common share per share amounts within the financial statements and notes thereto have been adjusted for all periods presented to give effect to this share split, including reclassifying an amount equal to the change in par value of common shares to additional paid-in capital.

In 2021, the remaining milestones required to fund the remaining two tranches of the Series C Preferred financing were waived, and the funding of both tranches prior to the completion of the IPO was authorized. The two remaining tranches funded additional net proceeds of $56.6 million in the aggregate, after repurchasing the 718,250 shares of Series A Preferred and 165,750 common shares from one investor.

Automatic Conversion of Preferred Shares – In 2021, the Company effected an amendment to its Articles of Association, as amended. This amendment eliminated the minimum price per common share for an underwritten public offering that would result in the automatic conversion of all outstanding Series A, Series B, and Series C preferred shares of the Company.

Common shares

In 2021, the Company completed an IPO of common shares pursuant to its registration statement on Form F-1, as amended (file 333-253795) under the symbol “LVTX” in the United States on Nasdaq. Pursuant to the registration statement, the Company issued and sold 6,700,000 shares of $0.14 par value common share at a price of $15.00 per share. Net proceeds from the IPO were approximately $89.0 million after deducting underwriting discounts and commissions of $7.0 million and offering costs of $4.5 million.

In 2021, underwriters of the Company’s IPO consummated the exercise of their option to purchase 425,712 common shares from the Company at the price of $15.00 per share resulting in additional IPO proceeds to the Company of $5.9 million after deducting underwriting discounts and commissions of $0.4 million.

In 2021, the Company issued 235,664 common shares to VUmc representing the $3.7 million payable in accordance with the VUmc agreement.

In 2022, the Company issued 491,352 common shares to VUmc representing 50% of the payable in accordance with the VUmc agreement.

In 2022, the Company issued 22,197 common shares to former employees upon exercise of outstanding stock options.

The following table provides information about the Company’s major shareholders on a non-diluted basis:

	As of December 31,
	2022		2021
Gilde Healthcare	20.6	%	21.0	%
Versant Venture Capital VI, L.P.	17.5	%	17.8	%
Novo Holdings A/S	12.7	%	12.9	%
Redmile Biopharma Investments	10.6	%	10.8	%
Sanofi Foreign Participations B.V.	7.3	%	7.4	%
Ysios Capital Partners, SGECR,S.A.U.	—	%	6.2	%
Other shareholders	31.3	%	23.9	%
	100.0	%	100.0	%

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Borrowings

12 Months Ended

Dec. 31, 2022

Borrowings.

Borrowings

16. Borrowings

				As of December 31,
				2022		2021
	Stated				Amount, incl.		Amount, incl.
	interest				accrued		accrued
(in thousands)	rate		Maturity		interest		interest
Innovation Credit	10,0	%	31/12/2023	$	4,640	$	4,284
Current				$	4,640	$	—
Non-current				$	—	$	4,284

In 2019, the Company applied for, and received a $5.5 million Innovation Credit (the “Credit”) from Rijksdienst voor Ondernemend Nederland (RVO). The Credit contributes to the development of one of the Company’s main projects, and certain assets of that project are pledged as a guarantee.

Borrowings under the Credit, which bear interest at 10.0%, will be received in quarterly installments through 2023, based on the level of the underlying cost base of the project in each period. The repayment of principal and accrued interest is due on December 31, 2023.

As of December 31, 2022 and 2021, the Company had $4.6 million and $4.3 million, respectively in borrowings under the Credit, all of which was classified as long-term, and includes accrued interest.

The Credit contains customary limitations on the Company and its shareholders, including the shareholders of the Company not being permitted to subtract assets (including cash) by means of dividend, interest, or repayment of loans as long as the Credit has not been repaid in full. The Company needs to file a progress report after each of the five reporting periods: March 2020, December 2020, December 2021, October 2022, and July 2023. The reporting dates for the last 3 reporting periods were extended with 18 months. Based on the progress report, RVO will decide to continue to pay future installments if the following conditions are met:

● Activities during reporting period were completed successfully

● Perspective on completion of the project and future commercialization are still good

● The Company has financed its own contribution in the project sufficiently

As of December 31, 2022, the Company was in compliance with all of the terms of the Credit.

Interest expense incurred from the Credit during the years ended December 31, 2022, 2021 and 2020 were $0.4 million, $0.3 million and $0.2 million, respectively.

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Trade payables and other

12 Months Ended

Dec. 31, 2022

Trade payables and other.

Trade payables and other

17. Trade payables and other

The Company had accounts payable balances of $4.0 million and $2.6 million as of December 31, 2022 and 2021, respectively. The average credit period on domestic purchases of certain goods is 7-30 days. No interest is charged on the trade payables from the invoice received. Information about the Company’s exposure to currency and liquidity risk in relation to its trade and other payables is included in Note 21.

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Accrued expenses and other current liabilities

12 Months Ended

Dec. 31, 2022

Accrued expenses and other current liabilities.

Accrued expenses and other current liabilities

18. Accrued expenses and other current liabilities

		As of December 31,
(in thousands)		2022		2021
Research and development external project costs	$	5,399	$	983
Personnel-related expenses		1,903		161
Professional fees		486		425
Other		405		310
	$	8,193	$	1,879

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Share-based compensation

12 Months Ended

Dec. 31, 2022

Share-based compensation

Share-based compensation

19. Share-based compensation

19.1Description of equity incentive plans

In 2018, the Company established the 2018 Stock Option Plan that entitles employees, directors, and consultants providing services to purchase depository receipts for common shares of the Company. Under this plan, holders of vested options are entitled to purchase common shares at the exercise price determined at the date of the grant.

In 2020, the Company established the 2020 U.S. Stock Option Plan that entitles employees, directors and consultants providing services to give the right to acquire a number of common shares. Under this plan, holders of vested options are entitled to purchase common stock at the exercise price determined at the date of the grant.

In March 2021, LAVA Therapeutics N.V. established the 2021 Long-term Incentive Option Plan, as an incentive for all its employees, members of its board of directors and select external consultants. As of March 25, 2021, the 2018 Stock Option Plan and the 2020 U.S. Stock Option Plan ceased to have any future shares available.

Under the option plans, the options granted generally have a maximum term of 10 years and can generally have the following vesting schemes:

● 25% of the options vest on the first anniversary of the vesting commencement date, and the remaining 75% of the options vest in 36 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the fourth anniversary of the vesting commencement date.

● the options vest in 48 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the fourth anniversary of the vesting commencement date.

● the options vest in 12 monthly installments for each full month of continuous service provided by the option holder thereafter, such that 100% of the options shall become vested on the first anniversary of the vesting commencement date.

Share-based options

During 2022 and 2021, the board of directors granted 2,358,458 options and 1,801,088 options, respectively.

The following table provides information about share-based awards as of December 31, 2022 and 2021:

	2018 Stock Option Plan			2020 U.S. Stock Option Plan			2021 Long-term Incentive Option Plan
			Weighted			Weighted			Weighted
		Weighted	average		Weighted	average		Weighted	average
	Number	average	remaining		average	remaining		average	remaining
	of	exercise	contractual	Number of	exercise	contractual	Number of	exercise	contractual
	options	price $	term (yrs)	options	price $	term (yrs)	options	price $	term (yrs)
Outstanding at January 1, 2021	620,347	0.01	(*)	1,069,198	2.76	9.50	—	—	—
Granted	—	—		493,938	12.69	9.21	1,307,150	6.03	9.90
Exercised	—	—		—	—		—	—
Forfeited	—	—		—	—		—	—
Outstanding at December 31, 2021	620,347	0.01	(*)	1,563,136	5.90	8.90	1,307,150	6.03	9.90
Granted	—	—		—	—		2,358,458	4.01	9.79
Exercised	(16,073)	0.01		(6,124)	2.76		—	—
Forfeited	(3,817)	0.01		(284,933)	13.46		(258,014)	5.75
Outstanding at December 31, 2022	600,457	0.01	(*)	1,272,079	4.22	7.83	3,407,594	4.66	9.54
Exercisable at December 31, 2022	387,565			717,532			470,454
(*) contract term does not have fixed end date

As of December 31, 2022, outstanding options had exercise prices ranging from $0.01 to $15.00.

19.2Measurement of fair values

The fair value of the equity-settled employee share options has been measured using the Black-Scholes formula, for all stock option grants issued after our IPO in March 2021. The service conditions attached to the transactions were not taken into account in measuring fair value.

The assumptions used in the measurement of the fair values and the weighted average fair value of the share options granted during the years ended on December 31, 2022, 2021 and 2020:

	December 31, 2022		December 31, 2021				December 31, 2020
	NL & US		NL		US		NL
Expected annual average volatility		83.9%		80.1%		80.1%		75.5% - 90.0%
Expected life, years		6.08		6.08		6.08		3.92
Fair value of the common share	$	1.71 - 3.91	$	3.42 - 5.23	$	3.12 - 8.71	$	2.10 - 2.76
Exercise price	$	2.34 - 5.50	$	5.10 - 7.77	$	5.10 - 15.00	$	0
Dividend yield		—		—		—		—
Risk-free interest rate		1.65% - 3.78%		(0.30%) - (0.53%)		0.94% - 1.34%		(0.62%)
Weighted average grant date fair value	$	4.01	$	3.61	$	5.95	$	2.71

In 2022, all options were granted in USD. In 2021, options were granted with a contractual exercise price in both EUR and USD. In 2020, all options were granted with a contractual exercise price in EUR. Since the Company was a private company until March 2021, limited company-specific historical and implied volatility information is available. Expected volatility is therefore estimated based on the observed daily share price returns of publicly traded peer companies over a historic period equal to the period for which expected volatility is estimated, as well as our own limited historical stock performance and our own stock-price volatility. The group of comparable listed companies are publicly traded entities active in the business of developing antibody-based therapeutics, treatments and drugs and are selected taking into consideration the availability of meaningful trading data history and market capitalization. The Company will continue to use this method for calculation of expected volatility data until sufficient historical market data is available for estimating the volatility of our common shares.

Total share-based compensation expenses for the years ended December 31, 2022, 2021 and 2020 were $4.1 million, $3.9 million and $0.6 million, respectively.

Valuation of common shares

As of our IPO in March 2021, the fair value of the common shares is determined by the market value of our shares on the Nasdaq Global Select Market under the symbol “LVTX.”

Prior to our IPO, the fair value of the common shares was determined by the Company’s management board and supervisory board and took into account the most recently available valuation of common shares performed by an independent valuation firm and the assessment of additional objective and subjective factors the Company believed were relevant and which may have changed from the date of the most recent valuation through the date of the grant.

The Company’s management board and supervisory board considered numerous objective and subjective factors to determine their best estimate of the fair value of our common shares as of each grant date, including:

• the progress of our research and development programs;

• achievement of enterprise milestones, including entering into collaboration and licensing agreements, as well as funding milestones;

• contemporaneous third-party valuations of our common shares for our most recent share issuances;

• our need for future financing to fund operations;

• the rights and preferences of our preference shares and our preference shares relative to our common shares;

• the likelihood of achieving a discrete liquidity event, such as a sale of our Company or an initial public offering given prevailing market conditions; and

• external market and economic conditions impacting our industry sector.

In determining the fair values of the common shares as of each grant date, three generally accepted approaches were considered: income approach, market approach and cost approach. In addition, the guidance prescribed by the American Institute of Certified Public Accounts Audit and Accounting Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation had been considered.

The “prior sale of company stock” method, a form of the market approach, had been applied to estimate the total enterprise value. The prior sale of company stock method considers any prior arm’s length sales of the Company’s equity securities. Considerations factored into the analysis included: the type and amount of equity sold, the estimated volatility, the estimated time to liquidity, the risk-free rate, the timing compared to the common shares valuation date and the financial condition and structure of the Company at the time of the sale. As such, the value per share had been benchmarked to the external transactions of Company stock and external financing rounds. For determining the value of the Company’s shares, the prior sale of company stock method had been relied on to estimate the total value of the Company’s equity. Throughout this period, financing rounds were held, which resulted in the issuance of preferred shares. The preferred shares were transacted with numerous existing and new investors, and therefore the pricing in these financing rounds was considered a strong indication of fair value.

Given that there were multiple classes of equity, the Option Pricing Method (OPM) had been applied in order to allocate equity to the various equity classes. The OPM treats securities as call options on the enterprise’s equity value, with exercise prices based on the liquidation preference and conversion features of preferred stock and strike prices of options. An incremental discount for lack of marketability (DLOM) was applied with a range from 10% to 25%, corresponding to the time to exit to reflect the increased risk arising from the inability to readily sell the shares. Under this method, the cost of the put option, which can hedge the price change before the privately held shares can be sold, was considered as the basis to determine the DLOM.

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Related parties

12 Months Ended

Dec. 31, 2022

Related parties

Related parties

20. Related parties

Key management compensation

Key management includes members of the Company’s executive committee and the board of directors. The compensation paid or payable to key management for the Board and employee services includes their participation in share-based compensation arrangements. The compensation paid to these individuals is

presented below for the years ended December 31, 2022, 2021 and 2020. The disclosure amounts are based on the expense recognized in the consolidated statements of loss and other comprehensive loss.

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Key management compensation
Short term employee benefits	$	2,673	$	3,099	$	1,518
Share-based payments		1,994		2,702		310
Post-employment benefits		108		92		74
	$	4,775	$	5,893	$	1,902

Director and shareholder compensation

A member of the Company’s board of directors and existing shareholder received consultancy fees. The compensation paid to this individual is presented below for the years ended December 31, 2022, 2021, and 2020. As of December 31, 2022, 2021, and 2020, related party expenses of less than $0.1 million, respectively, were reported in the Company’s trade payables and other balances. The disclosure amounts are based on the expense recognized in the consolidated statements of loss and other comprehensive loss.

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Director and shareholder compensation
Board fees	$	320	$	227	$	—
Consultancy fees		—		20		55
	$	320	$	247	$	55

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Financial instruments, risk management and capital management

12 Months Ended

Dec. 31, 2022

Financial instruments, risk management and capital management

Financial instruments, risk management and capital management

21. Financial instruments, risk management and capital management

21.1Financial assets and financial liabilities

The following table shows the carrying amounts of financial assets and financial liabilities. The Company does not hold any financial assets and financial liabilities other than those measured at amortized cost. Management assessed that the carrying values of the Company’s financial assets and financial liabilities measured at amortized cost are a reasonable approximation of their fair values.

21.2Financial risk management

		As of December 31,
(in thousands)	2022		2021
Financial assets measured at amortized cost
Cash and cash equivalents (Note 14)	$	100,333	$	90,869
Investments (Note 13)		32,535		42,334
Other non-current assets and security deposits		809		796
Receivables and other		3,254		363
Total financial assets	$	136,931	$	134,362
Financial liabilities measured at amortized cost
Borrowings (Note 16)	$	4,640	$	4,284
Trade payables and other (Note 17)		3,965		2,553
Accrued expenses and other current liabilities (Note 18)		8,193		1,879
Lease liabilities (Note 12)		810		581
Total financial liabilities	$	17,608	$	9,297

The Company is exposed to a variety of financial risks: market risk and credit risk. The Company’s overall risk management program seeks to minimize potential adverse effects of these financial risk factors on the Company’s financial performance.

21.2.1Market risk

Market risk is the risk that the fair value of future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risk, which mostly impacts the Company, comprises two types of risk: interest rate risk and currency risk. Financial instruments affected by market risk include cash, cash equivalents, investments, accounts receivable and trade and other payables. All of these financial instruments generally are short term in nature with maturities and settlement dates between one and 12 months.

The Company does not enter into any derivative financial instruments to manage its exposure to foreign currency risk and interest rate risk. During 2022, the foreign currency exchange rate between USD and EUR fluctuated throughout the year, with a 16.8% difference between the high and low rates, which had an impact on the results of our operations presented in USD, including foreign currency exchange gains of $2.9 million for the year ended December 31, 2022. Continued variations in exchange rates similar to this could have impacted our loss for the year by approximately $5.3 million as additional gain or loss. Due to the nature of our investment portfolio and other financial instruments, we do not believe an immediate 1.0% increase in interest rates would have a material effect on the fair market value of our portfolio, and accordingly we do not expect a sudden change in market interest rates to affect materially our operating results or cash flows.

21.2.2Credit risk

Cash and cash equivalents

The Company held cash and cash equivalents as of December 31, 2022 and 2021 of $100.3 million and $90.9 million, respectively.

Credit risk is the risk that a counterparty will not meet its obligations under a financial instrument or customer contract, leading to a financial loss. The Company is exposed to credit risk from its operating activities (primarily accounts receivable) and from its cash and cash equivalents held with three banks. Cash and cash equivalents, and short-term marketable securities are financial instruments that potentially subject the Company to concentrations of credit risk. As of December 31, 2022 and 2021, cash consists of cash

deposited with three financial institutions and account balances may exceed insured limits.

On March 10, 2023, Silicon Valley Bank, Santa Clara, California, or SVB, was closed by the California Department of Financial Protection and Innovation and the Federal Deposit Insurance Corporation, or FDIC, was appointed receiver. On March 26, 2023, First–Citizens Bank & Trust Company, Raleigh, North Carolina, or First Citizens, purchased all deposits and loans of SVB, and the former SVB reopened as First-Citizens Bank & Trust Company on Monday, March 27, 2023. We had a banking relationship with SVB, including $32.0 million as of December 31, 2022 held in Euros. Although most SVB depositors received full access to their funds on March 13, 2023, we had disrupted and delayed access to funds held in multi-currency accounts while the systems’ conversions were being completed to allow full–service banking, which has been resolved. As of March 31, 2023 we had $0.1 million of cash held at SVB as First-Citizens Bank & Trust Company. The majority of our cash is held at other banks that can be used to fund operations and believe the purchase of SVB’s assets by First Citizens will not have any material impact on our liquidity and capital resources.

Besides the above, management believes that the Company is not exposed to significant credit risk due to the financial strength of these institutions.

Investments

We invest our cash in accordance with a policy objective that seeks to ensure both liquidity and safety of principal. The policy limits investments to instruments issued by the U.S. government, certain SEC-registered

money market funds that invest only in U.S. government obligations and various other low-risk liquid investment options, and places restrictions on portfolio maturity terms. We do not believe our current investments give rise to a material credit risk.

21.3 Capital management

The Company manages its capital to ensure that the Company will be able to continue as a going concern while maximizing return to shareholders through the optimization of the debt and equity balance.

The capital structure of the Company consists of net debt (leases as detailed in Note 12 and borrowings as detailed in Note 16 offset by cash and cash equivalents) and equity (as detailed in the consolidated statements of financial position).

In order to achieve this overall objective, the Company’s capital management, among other things, aims to ensure that it meets financial covenants attached to the borrowings that define capital structure requirements.

No changes were made in the objectives, policies, or processes for managing capital during the year ended December 31, 2022.

21.4 Liquidity Risk

As of December 31, 2022, we held cash, cash equivalents and investments of $132.8 million which we believe is sufficient to service our current liabilities of $17.6 million, as well as fund our operations for at least the next 12 months. Refer to Note 2, “Going Concern” for additional information. We do not believe we are currently exposed to material liquidity risk as of December 31, 2022.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies

Commitments and Contingencies

22. Commitments and Contingencies

Lease contract

In December 2021, the Company entered into a lease contract for laboratory and office space in Utrecht with a commencement date in February 2023. The lease agreement has an end date on March 31, 2026 and includes cancellation provisions. The total lease commitment under the agreement amounts to $1.7 million.

Legal proceedings

From time to time, the Company is involved in legal proceedings and adjudications generally incidental to its normal business activities, none of which has had, individually or in the aggregate, a material adverse impact on the Company. The Company accrues for loss contingencies when a present obligation (legal or constructive) has arisen as a result of a past event, payment is probable, and the amount can be estimated reliably. These estimates are based on an analysis made by internal and external legal counsel considering information known at the time. Legal costs in connection with loss contingencies are expensed as incurred. The Company believes that the resolution of any current legal matters will not have a material adverse impact on its financial position or results of operations.

Contingent liabilities

In January 2017, we entered into VUmc Agreement, as amended. Under the VUmc Agreement, VUmc granted us an exclusive, although non-exclusive with respect to certain intangible know-how, worldwide, sublicensable license under certain patent rights and know-how owned by VUmc, effectively including research and other services provided in collaboration by VUmc since 2017 to develop, make, and sell licensed products. VUmc retains the right to use the patent rights and know-how for solely non-commercial research and educational purposes, but it may not conduct such work with respect to any product that is directed to a specified target for a specified time period.

We are obligated to pay VUmc sub to low single-digit tiered royalties on net sales of products covered by claims included in the assigned patent rights. Royalties are payable on a country-by-country basis for a royalty term that expires upon the expiration of the last valid claim in the assigned patent rights in such

country that would be infringed by the use, manufacture, or sale of a product in such country in the absence of us having rights to such patent right. In connection with our IPO, we issued to VUmc 235,664 of our common share and paid $0.3 million in cash. On each of the first and second anniversary of our IPO, we are required to pay $4.7 million. Such payment shall be made in cash or common shares, at the election of the Company, valued using the closing price of common shares on the date two trading days prior to the respective anniversary of our IPO. In 2022, the Company issued 491,352 common shares to VUmc representing 50% of the payable in accordance with the VUmc agreement for the first anniversary payment. The final payment is due at the second anniversary of our IPO in March 2023. The Company and VUmc have been collaborating since 2017 and VUmc makes available certain employees to the Company who perform research activities for the benefit of the Company. In accordance with IFRS, these obligations are reflected in the accompanying consolidated statements of financial position.

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Revision of Immaterial Misstatements

12 Months Ended

Dec. 31, 2022

Revision of Immaterial Misstatements

Revision of Immaterial Misstatements

23. Revision of Immaterial Misstatements

In connection with the preparation and review of the Company's consolidated interim and year-end financial statements for December 31, 2022, management identified certain immaterial misstatements in our historical financial statements related to the accounting for foreign currency exchange gains and losses associated with cash balances held in USD at LAVA Therapeutics, N.V. with a functional currency of Euro. We incorrectly computed and recorded the foreign exchange gain (loss) from our USD cash account in a Euro functional entity as foreign currency translation adjustment instead of foreign currency gain (loss). Management also identified certain immaterial misstatements in our historical financial statements primarily related to research and license revenue reported at the incorrect exchange rate and the accounting for share-based compensation expenses. We incorrectly computed and recorded the share-based compensation expenses due to an error in the calculation of the expense attribution over the vesting period, resulting in an incorrect and accelerated expense being recorded.

In accordance with the guidance set forth in Securities and Exchange Commission (SEC) Staff Accounting Bulletin (SAB) 99, Materiality, and SEC SAB 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financials, the Company concluded these misstatements were not material to the previously issued consolidated financial statements. We are revising our historical financial statements to revise the immaterial misstatements.

The revision for the foreign currency exchange and share-based compensation expense misstatements did not have an impact on total equity as of December 31, 2022, or any prior periods. As a result of the Company’s immaterial misstatements, net loss was overstated by $3.0 million, research and license revenue was understated by $0.4 million, operating expenses were overstated by $0.4 million and foreign currency exchange gain (loss), net was understated by $2.3 million for the year ended December 31, 2021 and net loss was understated by $0.4 million, research and license revenue was understated by $0.2 million and foreign currency exchange gain (loss), net was understated by $0.7 million for the year ended December 31, 2020. Also, as a result of a clerical error in presentation, our as reported foreign currency translation adjustment in the consolidated statement of loss and comprehensive loss was overstated by $3.2 million for the year ended December 31, 2021, this being the difference between the amount in the statement of total comprehensive loss and the amount in the statement of equity.

In the Consolidated Statements of Loss and Comprehensive Loss, we have revised the following:

	Year Ended
	December 31, 2021
	As reported			Adjustment	As revised
(in thousands)
Research and license revenue	$	5,000	$	350	$	5,350
Total revenue	$	5,000	$	350	$	5,350
Research and development expenses	$	(37,193)	$	248	$	(36,945)
General and administrative expenses	$	(12,160)	$	142	$	(12,018)
Total operating expenses	$	(49,353)	$	390	$	(48,963)
Operating loss	$	(44,353)	$	740	$	(43,613)
Foreign currency exchange gain (loss), net	$	(212)	$	2,252	$	2,040
Total non-operating income (loss)	$	(837)	$	2,252	$	1,415
Loss before income tax	$	(45,190)	$	2,992	$	(42,198)
Loss for the year	$	(45,347)	$	2,992	$	(42,355)
Foreign currency translation adjustment	$	(6,210)	$	568	$	(5,642)
Total comprehensive loss	$	(51,557)	$	3,560	$	(47,997)
	Year Ended
	December 31, 2020
	As reported			Adjustment	As revised
(in thousands)
Research and license revenue	$	3,500	$	247	$	3,747
Total revenue	$	3,500	$	247	$	3,747
Operating loss	$	(14,920)	$	247	$	(14,673)
Foreign currency exchange gain (loss), net	$	(201)	$	(668)	$	(869)
Total non-operating income (loss)	$	(543)	$	(668)	$	(1,211)
Loss before income tax	$	(15,463)	$	(421)	$	(15,884)
Loss for the year	$	(15,506)	$	(421)	$	(15,927)
Foreign currency translation adjustment	$	(577)	$	375	$	(202)
Total comprehensive loss	$	(16,083)	$	(46)	$	(16,129)

In the Consolidated Statements of Financial Position and Changes in Equity, we have revised the following:

	December 31, 2021						December 31, 2020
	As reported			Adjustment	As revised		As reported			Adjustment	As revised
(in thousands)
Equity-settled employee benefits reserve	$	5,219		(390)		4,829		922		—		922
Foreign currency translation reserve	$	(4,042)	$	(2,181)	$	(6,223)	$	(1,003)	$	421	$	(581)
Accumulated deficit	$	(78,733)	$	2,571	$	(76,162)	$	(33,386)	$	(421)	$	(33,807)
Equity:	$	118,367	$	—	$	118,367	$	7,622	$	—	$	7,622

In the Consolidated Statements of Cash Flows, we have revised the following:

	Year Ended
	December 31, 2021
	As reported			Adjustment	As revised
(in thousands)
Loss before income tax	$	(45,190)	$	2,992	$	(42,198)
Foreign currency exchange gain (loss), net	$	562	$	(2,602)	$	(2,040)
Share-based compensation expense	$	4,297	$	(390)	$	3,907
Cash and cash equivalents at end of year	$	90,869	$	—	$	90,869
	Year Ended
	December 31, 2020
	As reported			Adjustment	As revised
(in thousands)
Loss before income tax	$	(15,463)	$	(421)	$	(15,884)
Foreign currency exchange gain (loss), net	$	448	$	421	$	869
Cash and cash equivalents at end of year	$	15,818	$	—	$	15,818

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Summary of significant accounting policies (Policies)

12 Months Ended

Dec. 31, 2022

Summary of significant accounting policies

Basis of preparation

(a)Basis of preparation

The consolidated financial statements of the Company have been prepared in accordance with and comply with IFRS as issued by the IASB.

The consolidated financial statements of the Company have been prepared on a historical cost basis.

The preparation of the consolidated financial statements in conformity with IFRS requires the application of certain critical accounting estimates. It also requires management to exercise its judgment in the process of applying the accounting policies. The areas involving a greater degree of judgment or complexity, or areas in which assumptions and estimates are significant to the consolidated financial statements, are disclosed in Note 3.

Going concern

These consolidated financial statements have been prepared by management on the assumption that the Company will be able to continue as a going concern, which presumes that the Company will, for the foreseeable future, be able to realize its assets and discharge its liabilities in the normal course of business.

Through December 31, 2022, the Company funded its operations with proceeds from sales of equity financings, collaboration and licensing agreements, government grants and borrowings under various agreements. Since inception the Company has incurred recurring net losses. The Dutch Research and Development Act (WBSO) provides compensation for a part of research and development wages and other costs through a reduction in payroll taxes. WBSO grant amounts are offset against wages and salaries and included in research and development expenses in the consolidated statements of loss and comprehensive loss.

As of December 31, 2022, the Company had an accumulated deficit of $108.1 million. The Company expects to continue to generate operating losses in the foreseeable future. The Company expects that its cash, cash equivalents and investments of $132.9 million as of December 31, 2022 will be sufficient to fund its operating expenses and capital expenditure requirements for at least the next 12 months following the issuance of these financial statements. Accordingly, the consolidated financial statements have been prepared on a going concern basis.

Until we can generate sufficient product revenue to satisfy our cash requirements, which we may never do, we expect to finance our future cash needs through a combination of public or private equity offerings, debt financings, collaborations, strategic alliances, licensing arrangements and other marketing or distribution arrangements. Disruptions in the financial markets in general may make equity and debt financing more difficult to obtain and may have a material adverse effect on our ability to meet our fundraising needs. If we are unable to obtain sufficient funding in a timely manner or on commercially acceptable terms, we may have to delay, reduce the scope of, or eliminate one or more of our research programs, and consider other cost reduction initiatives, such as downsizing our operations or withholding initiation or expansion of clinical trials or research. In addition, in the event we are not able to generate sufficient funds, we may be unable to continue as a going concern and our business, financial condition and/or results of operations could be materially and adversely affected and could reduce the price of our common shares and we may ultimately go into insolvency. In addition, any perceived or actual inability by us to finance our clinical development activities and other business activities may cause the market price of our common shares to decline.

Global Conditions

In March 2020, the COVID-19 virus caused a worldwide pandemic. Although the pandemic has impacted the timing of onboarding investigational sites and enrolling patients in our ongoing Phase 1/2a clinical trial for LAVA-051 and LAVA-1207, to date we have not experienced any material business disruption or impact to our consolidated financial statements as a result of the pandemic.

In addition, there may be adverse effects on our business condition and results from general economic and market conditions and overall fluctuations in the United States and international equity markets, including deteriorating market conditions due to investor concerns regarding inflation and hostilities between Russia and Ukraine.

Basis of consolidation

(b)Basis of consolidation

Subsidiaries are all entities over which the Company has control. Control is achieved when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are consolidated from the date on which control over the subsidiary is transferred to the Company and are deconsolidated from the date that control over the subsidiary ceases.

When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies into line with the Company’s accounting policies. All intercompany assets and liabilities, equity, income, expenses, and cash flows relating to transactions between members of the Company are eliminated in full on consolidation. Certain prior year amounts have been reclassified to reflect current year presentation.

Foreign currency

c)Foreign currency

Items included in the financial statements of each of the Company’s entities are measured using the currency of the primary economic environment in which the entity operates. The Company’s consolidated financial statements are presented in USD. The parent company, LAVA Therapeutics N.V., has the functional currency of EUR. The subsidiary company, LAVA Therapeutics, Inc., has the functional currency of USD.

Foreign currency transactions are translated into the functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation of monetary assets and liabilities denominated in foreign currencies at year end exchange rates are recognized within foreign currency exchange gain (loss), net, in the consolidated statements of loss and comprehensive loss.

For presentation purposes in USD, all assets and liabilities denominated in foreign currencies are translated into USD using exchange rates in effect as of the date of the balance sheet date. Revenue and expense transactions are translated at the monthly average exchange rates, and certain specific equity transactions are translated at the exchange rate in effect at the time of the transaction. All resulting exchange differences were recognized within currency translation adjustment in the consolidated statements of loss and other comprehensive loss and as a separate component of shareholders’ equity.

Segment information

d)Segment information

Operating segments are identified based on whether the allocation of resources and/ or the assessment of performance of a particular component of Company’s activities are regularly reviewed as a separate operating segment by Company’s Chief Operating Decision Maker. The Company’s business activities are organized into one reportable segment, which is consistent with the basis of the internal reports that the management regularly reviews in allocating resources and assessing performance.

Cash flow statement

e)Cash flow statement

The cash flow statement has been prepared using the indirect method. For the purposes of the consolidated statements of cash flows, cash and cash equivalents consist of cash and short-term deposits, as defined below, net of outstanding bank overdrafts.

Research and License Revenue

f)Research and License Revenue

We may enter into collaboration and licensing arrangements for research and development, manufacturing, and commercialization activities with counterparties for the development and commercialization of our product candidates. These arrangements may contain multiple components, such as (i) licenses, (ii) research and development activities, and (iii) the manufacturing of certain materials. Payments pursuant to these arrangements may include non-refundable and refundable payments, payments upon the achievement of significant regulatory, development and commercial milestones, sales of product at certain agreed-upon amounts, and royalties on product sales.

In determining the appropriate amount of revenue to be recognized as we fulfill our obligations under a collaboration agreement, we perform the following steps: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are capable of being distinct; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue as we satisfy each performance obligation.

Research and development expenses

g)Research and development expenses

The Company expenses research and development expenses as incurred and does not capitalize them. The Company’s research and development expenses consist primarily of costs incurred in performing research

and development activities, including personnel-related expenses such as salaries, share-based compensation and benefits, facility costs, depreciation and external costs of outside vendors engaged to conduct preclinical and clinical development activities. The Company accounts for a governmental research and development payroll tax subsidy from Wet Bevordering Speur en Ontwikkelingswerk (WBSO) as a reduction of the research and development personnel-related expenses when incurred.

General and administrative expenses

h)General and administrative expenses

The Company’s general and administrative expenses consist of personnel-related expenses for employees involved in general corporate functions, including accounting, finance, insurance, tax, legal and human relations, costs associated with outside professional fees such as legal counsel and auditors, costs associated with use by these functions of facilities and equipment, such as depreciation expenses, premises maintenance expenses and other general corporate expenses. General and administrative expenses are expensed as incurred.

Share-based awards

i)Share-based awards

Share options granted to employees and consultants providing similar services are measured at the grant date fair value of the equity instruments granted. The grant date fair value is determined through the use of an option-pricing model considering the following variables:

a) the exercise price of the option;

b) the expected life of the option;

c) the current value of the underlying shares;

d) the expected volatility of the share price;

e) the dividends expected on the shares; and

f) the risk-free interest rate for the life of the option.

The Company accounts for these awards as equity-settled share-based payment awards. For the Company’s share option plans, management’s judgment is that the Black-Scholes valuation formula is the most appropriate method for determining the fair value of the options considering the terms and conditions attached to the grants made and to reflect exercise behavior. Prior to the Company’s IPO, as a private company there was no published share price information available. Consequently, the Company estimated the fair value of its shares and the expected volatility of that share value for option grants prior to the IPO. These assumptions and estimates are further discussed in Note 19 to the financial statements.

The result of the share option valuations and the related compensation expense that is recognized for the respective vesting periods during which services are received is dependent on the model and input parameters used. Even though management considers the fair values reasonable and defensible based on the methodologies applied and the information available, others might derive a different fair value for the options.

Employee benefits

j)Employee benefits

The Company provides defined contribution plans to its employees. Contributions to defined contribution plans are expensed when employees provide services. The Company has no further payment obligations once the contributions have been paid. The Company’s post-employment schemes do not include any defined benefit plans. Expenses associated with the servicing of defined contribution plans were less than $0.1 million for each of the years ended December 31, 2022, 2021 and 2020.

Income taxes

k)Income taxes

Income tax expense comprises current and deferred tax. It is recognized in profit or loss except to the extent that it relates to a business combination, or items recognized directly in equity or in other comprehensive

income. Current tax comprises the expected tax payable or receivable on the taxable income or loss for the year and any adjustment to tax payable or receivable in respect of previous years. It is measured using tax rates enacted or substantively enacted at the reporting date. Current tax also includes any tax arising from dividends. Current tax assets and liabilities are offset only if certain criteria are met.

Deferred tax is recognized in respect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. Deferred tax is not recognized for:

● temporary differences on the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither accounting nor taxable profit or loss;

● temporary differences related to investments in subsidiaries, associates, and joint arrangements to the extent that the Company is able to control the timing of the reversal of the temporary differences and it is probable that they will not reverse in the foreseeable future; and

● taxable temporary differences arising on the initial recognition of goodwill.

Deferred tax assets are recognized for unused tax losses, unused tax credits and deductible temporary differences to the extent that it is probable that future taxable profits will be available against which they can be used. Deferred tax assets are reviewed at each reporting date and are reduced to the extent that it is no longer probable that the related tax benefit will be realized; such reductions are reversed when the probability of future taxable profits improves.

Unrecognized deferred tax assets are reassessed at each reporting date and recognized to the extent that it has become probable that future taxable profits will be available against which they can be utilized.

Deferred tax is measured at the tax rates that are expected to be applied to temporary differences when they reverse, using tax rates enacted or substantively enacted at the reporting date.

The measurement of deferred tax reflects the tax consequences that would follow from the manner in which the Company expects, at the reporting date, to recover or settle the carrying amount of its assets and liabilities.

Cash and cash equivalents

l)Cash and cash equivalents

Cash and cash equivalents in the consolidated statements of financial position comprise of cash at banks and on hand and short-term deposits with a maturity of three months or less, which are subject to an insignificant risk of changes in value.

For the purposes of the consolidated statements of cash flows, cash and cash equivalents consist of cash and short-term deposits, as defined above, net of outstanding bank overdrafts.

Investments

m)Investments

Our investments in debt securities consist entirely of investments in U.S. Treasury securities, with maturities ranging from three months to one year. All of these investments are classified as current assets in our consolidated statements of financial position. We have the intent and ability to hold all investments in debt securities until maturity. Accordingly, all investments are recorded at amortized cost on our consolidated statements of financial position, with the amortization of premiums or discounts and earned interest income recorded in our consolidated statements of loss.

Property and equipment

n)Property and equipment

Property, plant, and equipment are stated at cost less accumulated depreciation and accumulated impairment losses, if any. The cost of an item of property, plant and equipment is recognized as an asset if it is probable that future economic benefits associated with the item will flow to the entity and the cost of the item can be measured reliably.

Property, plant, and equipment include major expenditures for new assets, improvements and replacement assets that extend the useful lives of assets or increase their revenue-generating capacities. Repair and maintenance costs are expensed as incurred.

Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets, as follows:

Building improvements	10
Laboratory equipment	5
Office equipment	5
Information and communication equipment (ICT)	5

The estimated useful life for building improvements is the shorter of the estimated useful life and the lease term. Depreciation of property, plant and equipment used for laboratory equipment and ICT equipment is included within research and development expenses in the consolidated statements of loss and other comprehensive loss. Depreciation of all other property, plant and equipment is allocated between research and development and general and administrative expenses based on headcount.

The carrying amount of an item of property, plant and equipment is derecognized on disposal, or when no future economic benefits are expected from its use or disposal. The gain or loss arising from the derecognition of an item of property, plant, and equipment (calculated as the difference between the net disposal proceeds and the carrying amount of the asset) is included in “Gain / (loss) on disposal of non-current assets, net” in the consolidated statements of loss and other comprehensive loss when the asset is derecognized.

Management reviews the carrying amount of property, plant, and equipment for impairment when there is an indication that the carrying amount may exceed the expected recoverable amount.

Impairment of long-lived assets

o)Impairment of long-lived assets

Assets that are subject to depreciation or amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. An impairment loss is recognized in the consolidated statements of loss and other comprehensive loss consistent with the function of the assets, for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s fair value less costs of disposal and value in use. For the purposes of assessing impairment, assets are grouped at the lowest levels for which there are largely independent cash inflows. Prior impairments of non-financial assets (other than goodwill) are reviewed for possible reversal each reporting period.

Provisions

p)Provisions

Provisions are recognized when the Company has a present obligation (legal or constructive) as a result of a past event, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimate. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provision is reversed.

Value added tax

q)Value added tax

Expenses and assets are recognized net of the amount of value added tax (VAT) except when the VAT incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case the VAT is recognized as part of the cost of acquisition of the asset or as part of the expense item.

The net amount of the VAT recoverable from, or payable to, the taxation authority is included as part of receivables or payables in the consolidated statements of financial position.

Financial instruments

r)Financial instruments

(i) Financial assets

The Company’s financial assets are comprised of cash and cash equivalents, investments, trade and other receivables, security deposits, other current and non-current assets. All financial assets are recognized initially at fair value plus transaction costs that are attributable to the acquisition of the financial asset, and follow our business model of standard working capital purposes. Purchases and sales of financial assets are recognized on the settlement date; the date that the Company receives or delivers the asset. The Company classifies its financial assets primarily as cash and cash equivalents and receivables. Receivables are non-derivative financial assets, with fixed or determinable payments that are not quoted in an active market. They are included in current assets.

Financial assets are derecognized when the rights to receive cash flows from the asset have expired, or the Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full.

(ii) Financial liabilities

The Company’s financial liabilities are comprised of trade and other payables, lease liabilities, and borrowings. All financial liabilities are recognized initially at fair value, adjusted for transaction costs.

After initial recognition, borrowings are subsequently measured at amortized cost using the effective interest method. The effective interest method amortization is included in finance costs in the consolidated statements of loss and other comprehensive loss.

Payables and borrowings are classified as current liabilities unless the Company has an unconditional right to defer settlement of the liability for at least the next 12 months after the reporting date.

Financial liabilities are derecognized when the obligation under the liability is discharged, cancelled, or expires.

(iii) Fair value measurements

The Company does not hold any financial assets and financial liabilities other than those measured at amortized cost, as our business model is such that we have the intent to hold these instruments for the sole purpose of collecting contractual cash flows, and the contractual terms give rise to cash flows that are solely for payments of principal and interest. Management assessed that the carrying values of the Company’s financial assets and financial liabilities measured at amortized cost are a reasonable approximation of their fair values.

Leases

s)Leases

The Company is party to lease contracts relating to laboratory and office facilities located in the Netherlands and the U.S.

(i) Right-of-use assets

The Company recognizes right-of-use assets at the commencement date of the lease (i.e., the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities. The recognized right-of-use assets are depreciated on a straight-line basis over the shorter of its estimated useful life and the lease term. Right-of- use assets are subject to impairment.

(ii) Lease liabilities

At the commencement date of the lease, the Company recognizes lease liabilities measured at the present value of lease payments to be made over the lease term. The lease payments include fixed payments

(including in substance fixed payments) less any lease incentives receivable, variable lease payments that depend on an index or a rate, and amounts expected to be paid under residual value guarantees.

In calculating the present value of lease payments, the Company uses the incremental borrowing rate at the lease commencement date if the interest rate implicit in the lease is not readily determinable. After the commencement date, the amount of lease liabilities is increased to reflect the accretion of interest and reduced for the lease payments made. In addition, the carrying amount of lease liabilities is remeasured if there is a modification, a change in the lease term, a change in the in-substance fixed lease payments or a change in the assessment to purchase the underlying asset.

Revision of immaterial misstatements

t)Revision of immaterial misstatements

During the year ended December 31, 2022, the Company identified misstatements in its historical accounting for foreign currency translations and share-based compensation expenses in the consolidated financial statements for certain prior periods. Management evaluated the misstatements and concluded that they were immaterial, either individually or in the aggregate, to its current or previously issued consolidated financial statements. As a result, certain comparative amounts in the consolidated statements of profit and loss and comprehensive profit and loss, financial position, changes in equity and cash flows have been revised to correct for such immaterial misstatements with respect to foreign currency translations and share-based compensation expenses. Such revisions and their impact are disclosed more fully in Note 23, “Revision of Immaterial Misstatements.”

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Corporate and Company information (Tables)

12 Months Ended

Dec. 31, 2022

Corporate and Company information

Schedule of percentage of equity interest in subsidiary

			% of equity interest
Name	Legal seat	Country of incorporation	2022		2021
Lava Therapeutics N.V.	Utrecht	The Netherlands	100	%	100	%
Lava Therapeutics Inc.	Delaware	United States of America	100	%	100	%

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Summary of significant accounting policies (Tables)

12 Months Ended

Dec. 31, 2022

Summary of significant accounting policies

Schedule of estimated useful lives

Building improvements	10
Laboratory equipment	5
Office equipment	5
Information and communication equipment (ICT)	5

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Revenue (Tables)

12 Months Ended

Dec. 31, 2022

Revenue

Schedule of allocation of transaction price to the performance obligations

As of the agreement date in September 2022, we allocated the transaction price to the performance obligations described above as follows:

			Cumulative
	Transaction		Revenue		Contract
(in thousands)	Price		Recognized		Asset
License	$	50,000	$	15,165	$	—
Manufacturing technology transfer activities		2,167		2,073		—
Initial supply		3,583		—		3,309
Research activities		750		663		—
Buy-up fee		(35,000)		—
	$	21,500	$	17,901	$	3,309

Schedule of changes in deferred revenue

(in thousands)
Balance at January 1, 2021	$	(6,176)
Recognized during the period		4,354
Foreign currency translation difference		295
Balance at December 31, 2021		(1,527)
Deferral of revenue		(35,000)
Recognized during the period		1,490
Foreign currency translation difference		37
Balance at December 31, 2022	$	(35,000)

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Research and development expenses (Tables)

12 Months Ended

Dec. 31, 2022

Research and development expenses

Schedule of research and development expenses

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Pre-clinical and clinical trial expenses	$	28,178	$	14,188	$	11,325
Personnel-related expenses		6,150		4,955		2,276
Research and development activities expenses		2,241		1,843		1,022
Share-based compensation expense		1,975		788		232
Facilities and other research and development expenses		1,546		814		643
VUmc and other license expenses		15		14,357		203
	$	40,105	$	36,945	$	15,701

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General and administrative expenses (Tables)

12 Months Ended

Dec. 31, 2022

General and administrative expenses

Schedule of general and administrative expenses

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Personnel-related expenses	$	5,010	$	3,800	$	1,474
Professional and consultant fees		3,954		2,593		683
Insurance, facilities, fees and other related costs		3,022		2,506		236
Share-based compensation expense		2,138		3,119		326
	$	14,124	$	12,018	$	2,719

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Interest (income) expense, net (Tables)

12 Months Ended

Dec. 31, 2022

Interest (income) expense, net

Schedule of interest expenses

	For the Year Ended December 31,
(in thousands)	2022			2021		2020
Interest (income) expense on borrowings and deposits, net	$	(339)	$	564	$	253
Interest expense related to leases		82		61		89
	$	(257)	$	625	$	342

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Taxation (Tables)

12 Months Ended

Dec. 31, 2022

Taxation

Schedule of unrecognized tax-losses incurred

(in thousands)	Loss per year
2017	$	862
2018		2,756
2019		1,084
2020		—
2021		908
2022		289
	$	5,900

Schedule of the reconciliation of income tax expense at statutory tax rate and the income expenses as reported in the consolidated statement of loss and other comprehensive income

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Loss before income tax	$	(31,658)	$	(42,198)	$	(15,884)
Computed 25.8% tax on Loss (2021/2020: 25%)		(8,168)		(10,549)		(3,971)
Tax effect of:
Non-deductible costs		1,080		982		124
Unrecognized deferred tax for losses and temporary differences		7,192		9,435		3,939
Difference in overseas tax rates		72		46		30
Change in deferred tax asset		72		244		(18)
Previously unrecognized tax losses now recouped to reduce current tax expense		—		—		(61)
Total corporate tax	$	249	$	157	$	43
Effective tax rate		(0.8)%		(0.4)%		(0.3)%
	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Current tax on result	$	249	$	139	$	61
Deferred tax prior years		—		18		—
Deferred tax current year		(7,264)		(9,679)		(3,921)
Movement valuation allowance		7,264		9,679		3,903
Total corporate tax expense	$	249	$	157	$	43

Schedule of unrecognized deferred tax assets

	For the Year Ended December 31,
(in thousands)	2022		2021		2020
Deductible temporary differences	$	83,933	$	59,683	$	25,668
Tax losses		5,900		5,747		5,218
Total unrecognized deferred tax assets	$	89,833	$	65,429	$	30,886
Total tax effect 25.8% (2021/2020: 25%)	$	23,177	$	16,357	$	7,722

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Earnings per share (EPS) (Tables)

12 Months Ended

Dec. 31, 2022

Earnings per share (EPS)

Schedule of loss and share data used in the basic and diluted EPS calculations

	For the Year Ended December 31,
(in thousands, except for share and per share amounts)	2022		2021		2020
Loss for the year	$	(31,907)	$	(42,355)	$	(15,927)
Weighted average number of common shares		25,924,005		19,758,169		399,126
Basic and diluted loss per share	$	(1.23)	$	(2.14)	$	(39.91)

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Property and equipment (Tables)

12 Months Ended

Dec. 31, 2022

Property and equipment

Schedule of movements in property and equipment

	Building		Laboratory		Office		ICT
(in thousands)	improvements		equipment		equipment		equipment		Total
Cost
Balance at January 1, 2021	$	112	$	1,162	$	38	$	139	$	1,451
Additions		20		679		—		65		764
Foreign currency translation adjustment		(9)		(117)		(2)		(12)		(140)
Balance at December 31, 2021		123		1,724		36		192		2,075
Additions		—		525		6		56		587
Foreign currency translation adjustment		(6)		(108)		(2)		(10)		(126)
Balance at December 31, 2022	$	117	$	2,141	$	40	$	238	$	2,536
Accumulated depreciation
Balance at January 1, 2021	$	8	$	290	$	11	$	29	$	338
Charge for the year		12		280		8		31		331
Foreign currency translation adjustment		(1)		(32)		(3)		(3)		(39)
Balance at December 31, 2021		19		538		16		57		630
Charge for the year		87		366		8		43		504
Foreign currency translation adjustment		(1)		(26)		—		(3)		(30)
Balance at December 31, 2022	$	105	$	878	$	24	$	97	$	1,104
Carrying amounts
Property and equipment, net at December 31, 2021	$	104	$	1,186	$	20	$	135	$	1,445
Property and equipment, net at December 31, 2022	$	12	$	1,263	$	16	$	141	$	1,432

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Leases (Tables)

12 Months Ended

Dec. 31, 2022

Leases

Schedule of right-of-use assets

(in thousands)
Balance at January 1, 2021	$	382
Additions		382
Depreciation charges		(227)
Foreign currency exchange difference		(36)
Balance at December 31, 2021		501
Additions		400
Depreciation charges		(277)
Foreign currency exchange difference		27
Balance at December 31, 2022	$	651

Schedule of maturities of lease liabilities

(in thousands)
2023	$	459
2024		284
2025		206
2026		—
Total lease commitments		949
Less: imputed lease interest		(139)
Total lease liabilities	$	810
Current portion	$	379
Non-current portion	$	431

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Cash and cash equivalents (Tables)

12 Months Ended

Dec. 31, 2022

Cash and cash equivalent

Schedule of cash and cash equivalents

		As of December 31,
(in thousands)		2022		2021
Short-term deposits	$	9,965	$	76,504
Current bank accounts		90,368		14,365
	$	100,333	$	90,869

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Share capital, share premium and other capital reserves (Tables)

12 Months Ended

Dec. 31, 2022

Share capital, share premium and other capital reserves

Schedule of share capital

The following table provides information about the Company’s share capital as of December 31, 2022, 2021 and 2020:

(in thousands, except	Authorized			Issued and fully paid			Additional paid-in capital				Share premium
for share and per	December 31,			December 31,			December 31,				December 31,
share amounts)	2022	2021	2020	2022	2021	2020	2022		2021		2020
Common shares of $0.01 each	—	—	447,525	—	—	281,775	$	—	$	—	$	—
Preference Series A shares of $0.01 each	—	—	1,755,845	—	—	1,037,595		—		—		722
Preference Series B shares of $0.01 each	—	—	3,899,766	—	—	3,899,766		—		—		18,340
Preference Series C shares of $0.01 each	—	—	4,133,805	—	—	4,133,805		—		—		22,026
Preference shares of $0.01 each	—	—	9,789,416	—	—	9,071,166		—		—		41,088
Preference shares of $0.14 each	45,000,000	45,000,000	—	—	—	—		—		—		—
Common shares of $0.14 each	45,000,000	45,000,000	—	26,289,087	25,775,538	—		194,424		192,270		—
	90,000,000	90,000,000	10,236,941	26,289,087	25,775,538	9,352,941	$	194,424	$	192,270	$	41,088

Schedule of major shareholders on a non-diluted basis

	As of December 31,
	2022		2021
Gilde Healthcare	20.6	%	21.0	%
Versant Venture Capital VI, L.P.	17.5	%	17.8	%
Novo Holdings A/S	12.7	%	12.9	%
Redmile Biopharma Investments	10.6	%	10.8	%
Sanofi Foreign Participations B.V.	7.3	%	7.4	%
Ysios Capital Partners, SGECR,S.A.U.	—	%	6.2	%
Other shareholders	31.3	%	23.9	%
	100.0	%	100.0	%

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Borrowings (Tables)

12 Months Ended

Dec. 31, 2022

Borrowings.

Schedule of borrowings

				As of December 31,
				2022		2021
	Stated				Amount, incl.		Amount, incl.
	interest				accrued		accrued
(in thousands)	rate		Maturity		interest		interest
Innovation Credit	10,0	%	31/12/2023	$	4,640	$	4,284
Current				$	4,640	$	—
Non-current				$	—	$	4,284

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Accrued expenses and other current liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Accrued expenses and other current liabilities.

Schedule of accrued expenses and other current liabilities

		As of December 31,
(in thousands)		2022		2021
Research and development external project costs	$	5,399	$	983
Personnel-related expenses		1,903		161
Professional fees		486		425
Other		405		310
	$	8,193	$	1,879

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Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-based compensation

Schedule of information about share-based awards

The following table provides information about share-based awards as of December 31, 2022 and 2021:

	2018 Stock Option Plan			2020 U.S. Stock Option Plan			2021 Long-term Incentive Option Plan
			Weighted			Weighted			Weighted
		Weighted	average		Weighted	average		Weighted	average
	Number	average	remaining		average	remaining		average	remaining
	of	exercise	contractual	Number of	exercise	contractual	Number of	exercise	contractual
	options	price $	term (yrs)	options	price $	term (yrs)	options	price $	term (yrs)
Outstanding at January 1, 2021	620,347	0.01	(*)	1,069,198	2.76	9.50	—	—	—
Granted	—	—		493,938	12.69	9.21	1,307,150	6.03	9.90
Exercised	—	—		—	—		—	—
Forfeited	—	—		—	—		—	—
Outstanding at December 31, 2021	620,347	0.01	(*)	1,563,136	5.90	8.90	1,307,150	6.03	9.90
Granted	—	—		—	—		2,358,458	4.01	9.79
Exercised	(16,073)	0.01		(6,124)	2.76		—	—
Forfeited	(3,817)	0.01		(284,933)	13.46		(258,014)	5.75
Outstanding at December 31, 2022	600,457	0.01	(*)	1,272,079	4.22	7.83	3,407,594	4.66	9.54
Exercisable at December 31, 2022	387,565			717,532			470,454
(*) contract term does not have fixed end date

Schedule of assumptions used in the measurement of the fair values and the weighted average fair value of the share options granted

The assumptions used in the measurement of the fair values and the weighted average fair value of the share options granted during the years ended on December 31, 2022, 2021 and 2020:

	December 31, 2022		December 31, 2021				December 31, 2020
	NL & US		NL		US		NL
Expected annual average volatility		83.9%		80.1%		80.1%		75.5% - 90.0%
Expected life, years		6.08		6.08		6.08		3.92
Fair value of the common share	$	1.71 - 3.91	$	3.42 - 5.23	$	3.12 - 8.71	$	2.10 - 2.76
Exercise price	$	2.34 - 5.50	$	5.10 - 7.77	$	5.10 - 15.00	$	0
Dividend yield		—		—		—		—
Risk-free interest rate		1.65% - 3.78%		(0.30%) - (0.53%)		0.94% - 1.34%		(0.62%)
Weighted average grant date fair value	$	4.01	$	3.61	$	5.95	$	2.71

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Related parties (Tables)

12 Months Ended

Dec. 31, 2022

Related parties

Schedule of key management compensation

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Key management compensation
Short term employee benefits	$	2,673	$	3,099	$	1,518
Share-based payments		1,994		2,702		310
Post-employment benefits		108		92		74
	$	4,775	$	5,893	$	1,902

Schedule of director and shareholder compensation

	For the Year Ended
	December 31,
(in thousands)	2022		2021		2020
Director and shareholder compensation
Board fees	$	320	$	227	$	—
Consultancy fees		—		20		55
	$	320	$	247	$	55

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Financial instruments, risk management and capital management (Tables)

12 Months Ended

Dec. 31, 2022

Financial instruments, risk management and capital management

Schedule of financial assets and financial liabilities

		As of December 31,
(in thousands)	2022		2021
Financial assets measured at amortized cost
Cash and cash equivalents (Note 14)	$	100,333	$	90,869
Investments (Note 13)		32,535		42,334
Other non-current assets and security deposits		809		796
Receivables and other		3,254		363
Total financial assets	$	136,931	$	134,362
Financial liabilities measured at amortized cost
Borrowings (Note 16)	$	4,640	$	4,284
Trade payables and other (Note 17)		3,965		2,553
Accrued expenses and other current liabilities (Note 18)		8,193		1,879
Lease liabilities (Note 12)		810		581
Total financial liabilities	$	17,608	$	9,297

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Revision of Immaterial Misstatements (Tables)

12 Months Ended

Dec. 31, 2022

Revision of Immaterial Misstatements

Schedule of revision of financial statements

	Year Ended
	December 31, 2021
	As reported			Adjustment	As revised
(in thousands)
Research and license revenue	$	5,000	$	350	$	5,350
Total revenue	$	5,000	$	350	$	5,350
Research and development expenses	$	(37,193)	$	248	$	(36,945)
General and administrative expenses	$	(12,160)	$	142	$	(12,018)
Total operating expenses	$	(49,353)	$	390	$	(48,963)
Operating loss	$	(44,353)	$	740	$	(43,613)
Foreign currency exchange gain (loss), net	$	(212)	$	2,252	$	2,040
Total non-operating income (loss)	$	(837)	$	2,252	$	1,415
Loss before income tax	$	(45,190)	$	2,992	$	(42,198)
Loss for the year	$	(45,347)	$	2,992	$	(42,355)
Foreign currency translation adjustment	$	(6,210)	$	568	$	(5,642)
Total comprehensive loss	$	(51,557)	$	3,560	$	(47,997)
	Year Ended
	December 31, 2020
	As reported			Adjustment	As revised
(in thousands)
Research and license revenue	$	3,500	$	247	$	3,747
Total revenue	$	3,500	$	247	$	3,747
Operating loss	$	(14,920)	$	247	$	(14,673)
Foreign currency exchange gain (loss), net	$	(201)	$	(668)	$	(869)
Total non-operating income (loss)	$	(543)	$	(668)	$	(1,211)
Loss before income tax	$	(15,463)	$	(421)	$	(15,884)
Loss for the year	$	(15,506)	$	(421)	$	(15,927)
Foreign currency translation adjustment	$	(577)	$	375	$	(202)
Total comprehensive loss	$	(16,083)	$	(46)	$	(16,129)

In the Consolidated Statements of Financial Position and Changes in Equity, we have revised the following:

	December 31, 2021						December 31, 2020
	As reported			Adjustment	As revised		As reported			Adjustment	As revised
(in thousands)
Equity-settled employee benefits reserve	$	5,219		(390)		4,829		922		—		922
Foreign currency translation reserve	$	(4,042)	$	(2,181)	$	(6,223)	$	(1,003)	$	421	$	(581)
Accumulated deficit	$	(78,733)	$	2,571	$	(76,162)	$	(33,386)	$	(421)	$	(33,807)
Equity:	$	118,367	$	—	$	118,367	$	7,622	$	—	$	7,622

In the Consolidated Statements of Cash Flows, we have revised the following:

	Year Ended
	December 31, 2021
	As reported			Adjustment	As revised
(in thousands)
Loss before income tax	$	(45,190)	$	2,992	$	(42,198)
Foreign currency exchange gain (loss), net	$	562	$	(2,602)	$	(2,040)
Share-based compensation expense	$	4,297	$	(390)	$	3,907
Cash and cash equivalents at end of year	$	90,869	$	—	$	90,869
	Year Ended
	December 31, 2020
	As reported			Adjustment	As revised
(in thousands)
Loss before income tax	$	(15,463)	$	(421)	$	(15,884)
Foreign currency exchange gain (loss), net	$	448	$	421	$	869
Cash and cash equivalents at end of year	$	15,818	$	—	$	15,818

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Corporate and Company information (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Lava Therapeutics N.V.
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Lava Therapeutics INC
Disclosure of subsidiaries [line items]
Proportion of ownership interest in subsidiary	100.00%	100.00%

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Summary of significant accounting policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Property, plant, and equipment
Accumulated deficit	$ (108,069)	$ (76,162)
Cash, cash equivalents and investments	$ 132,900
Number of reportable segment | segment	1
Top of range
Property, plant, and equipment
Expenses associated with defined contribution plans	$ 100	$ 100	$ 100
Building improvements
Property, plant, and equipment
Estimated useful lives	10 years
Laboratory equipment
Property, plant, and equipment
Estimated useful lives	5 years
Office equipment
Property, plant, and equipment
Estimated useful lives	5 years
Information and communication equipment (ICT)
Property, plant, and equipment
Estimated useful lives	5 years

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Material accounting judgments, estimates and assumptions (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Material accounting judgments, estimates and assumptions
Innovation Box tax rate	9.00%	9.00%
General headline rate	25.80%	25.00%	25.00%

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Revenue - Seagen Agreement (Details) - Seagen - License Agreement [Member] $ in Millions	1 Months Ended
	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($) item
Disclosure of disaggregation of revenue from contracts with customers [line items]
Non-refundable upfront payment received	$ 50.0
Maximum amount of nonrefundable upfront payment receivable		$ 650.0
Additional tumor targets | item		2
Buy-up fee		$ 35.0
Decrease in certain future milestones		30.00%
Years of sale for royalties payable		10 years
Maximum amount of reimbursement entitled to receive		$ 6.5

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Revenue - Transaction price allocated to performance obligations (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Oct. 31, 2022	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of performance obligations [line items]
Research and license revenue			$ 19,391	$ 5,350	$ 3,747
Contract Asset		$ 3,309
Deferred revenue			35,000
Seagen
Disclosure of performance obligations [line items]
Transaction Price		21,500
Research and license revenue		17,901
Ifrs License [Member] | Seagen
Disclosure of performance obligations [line items]
Transaction Price		50,000
Research and license revenue		15,165	15,200
Manufacturing Technology Transfer Activities [Member] | Seagen
Disclosure of performance obligations [line items]
Transaction Price		2,167
Research and license revenue		2,073	2,100
Initial Supply [Member]
Disclosure of performance obligations [line items]
Contract Asset		3,309
Initial Supply [Member] | Seagen
Disclosure of performance obligations [line items]
Transaction Price		3,583
Contract Asset			3,300
Research Activities [Member] | Seagen
Disclosure of performance obligations [line items]
Transaction Price		750
Research and license revenue		663	700
Buy-up Fee [Member] | Seagen
Disclosure of performance obligations [line items]
Transaction Price		$ 35,000	35,000
Non-refundable upfront payment received	$ 50,000
Deferred revenue			$ 35,000

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Revenue - Jansen Agreement (Details) - USD ($) $ in Thousands	1 Months Ended			12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	May 31, 2020	Dec. 31, 2022	Dec. 31, 2021
Research and license agreement
Revenue
Development milestones payment received	$ 1,000
Janssen Biotech Inc
Revenue
Deferred revenue at beginning of period				$ (1,527)	$ (6,176)
Deferral of revenue				(35,000)
Recognized during the period				1,490	4,354
Foreign currency translation difference				37	295
Deferred revenue at end of period		$ (6,176)		$ (35,000)	$ (1,527)
Development milestones payment received		$ 1,000
Janssen Biotech Inc | Research and license agreement
Revenue
Non-refundable upfront payment received			$ 8,000
Term of agreement			2 years
Years of sale for royalties payable				10 years
Deferred revenue at end of period				$ 0

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Research and development expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Research and development expenses
Pre-clinical and clinical trial expenses	$ 28,178	$ 14,188	$ 11,325
Personnel-related expenses	6,150	4,955	2,276
Research and development activities expenses	2,241	1,843	1,022
Share-based compensation expense	1,975	788	232
Facilities and other research and development expenses	1,546	814	643
VUmc and other license expenses	15	14,357	203
Total research and development expenses	40,105	36,945	15,701
Government grants	$ 1,600	$ 1,700	$ 1,000

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General and administrative expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
General and administrative expenses
Personnel-related expenses	$ 5,010	$ 3,800	$ 1,474
Professional and consultant fees	3,954	2,593	683
Insurance, facilities, fees and other related costs	3,022	2,506	236
Share-based compensation expense	2,138	3,119	326
Total general and administrative expenses	$ 14,124	$ 12,018	$ 2,719

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Interest (income) expense, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest (income) expense, net
Interest (income) expense on borrowings and deposits, net	$ (339)	$ 564	$ 253
Interest expense related to leases	82	61	89
Total interest income (expense), net	$ (257)	$ 625	$ 342

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Foreign currency exchange gain (loss), net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Foreign currency exchange gain (loss), net
Foreign currency exchange loss, net	$ 2.9	$ 2.0	$ 0.9

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Taxation - Other (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Taxation
Income tax expense	$ (249,000)	$ (157,000)	$ (43,000)
Tax loss carryforwards	5,900,000	$ 5,747,000	$ 5,218,000
NL
Taxation
Income tax expense	$ 0

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Taxation - Tax-losses carry forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2020
Taxation
Tax loss carryforwards	$ 5,900	$ 5,747		$ 5,218
Effective rate for Innovation Box profits	9.00%	9.00%
Amount of tax returns	$ 27,800	$ 33,900	$ 14,600
IP development costs	84,100
Accounting-to-tax differences
Taxation
Accounting-to-tax differences	(32,000)
2017
Taxation
Tax loss carryforwards	862
2018
Taxation
Tax loss carryforwards	2,756
2019
Taxation
Tax loss carryforwards	1,084
2021
Taxation
Tax loss carryforwards	908
2022
Taxation
Tax loss carryforwards	$ 289

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Taxation - Reconciliation of income tax expense at statutory tax rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Taxation
Loss before income tax	$ (31,658)	$ (42,198)	$ (15,884)
Computed 25.8% tax on Loss (2021/2020: 25%)	$ (8,168)	$ (10,549)	$ (3,971)
Computed Tax rate on Loss	25.80%	25.00%	25.00%
Non-deductible costs	$ 1,080	$ 982	$ 124
Unrecognized deferred tax for losses and temporary differences	7,192	9,435	3,939
Difference in overseas tax rates	72	46	30
Change in deferred tax asset	72	244	(18)
Previously unrecognized tax losses now recouped to reduce current tax expense			(61)
Total corporate tax	$ 249	$ 157	$ 43
Effective tax rate	(0.80%)	(0.40%)	(0.30%)

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Taxation - Components of corporate tax expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Taxation
Current tax on result	$ 249	$ 139	$ 61
Deferred tax prior years		18
Deferred tax current year	(7,264)	(9,679)	(3,921)
Movement in valuation allowance	7,264	9,679	3,903
Total corporate tax	$ 249	$ 157	$ 43

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Taxation - Unrecognized deferred tax assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Taxation
Deductible temporary differences	$ 83,933	$ 59,683	$ 25,668
Tax losses	5,900	5,747	5,218
Total unrecognized deferred tax assets	89,833	65,429	30,886
Total tax effect, unrecognized deferred tax assets	$ 23,177	$ 16,357	$ 7,722
Applicable tax rate	25.80%	25.00%	25.00%

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Earnings per share (EPS) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings per share (EPS)
Loss for the year	$ (31,907)	$ (42,355)	$ (15,927)
Weighted average common shares outstanding, basic	25,924,005	19,758,169	399,126
Weighted average common shares outstanding, diluted	25,924,005	19,758,169	399,126
Loss per share, basic	$ (1.23)	$ (2.14)	$ (39.91)
Loss per share, diluted	$ (1.23)	$ (2.14)	$ (39.91)

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Property and equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	$ 1,445
Balance, at end of the period	1,432	$ 1,445
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	2,075	1,451
Additions	587	764
Foreign currency translation adjustment	(126)	(140)
Balance, at end of the period	2,536	2,075
Accumulated depreciation, amortisation and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	(630)	(338)
Foreign currency translation adjustment	30	39
Charge for the year	504	331
Balance, at end of the period	(1,104)	(630)
Building improvements
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	104
Balance, at end of the period	12	104
Building improvements | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	123	112
Additions		20
Foreign currency translation adjustment	(6)	(9)
Balance, at end of the period	117	123
Building improvements | Accumulated depreciation, amortisation and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	(19)	(8)
Foreign currency translation adjustment	1	1
Charge for the year	87	12
Balance, at end of the period	(105)	(19)
Laboratory equipment
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	1,186
Balance, at end of the period	1,263	1,186
Laboratory equipment | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	1,724	1,162
Additions	525	679
Foreign currency translation adjustment	(108)	(117)
Balance, at end of the period	2,141	1,724
Laboratory equipment | Accumulated depreciation, amortisation and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	(538)	(290)
Foreign currency translation adjustment	26	32
Charge for the year	366	280
Balance, at end of the period	(878)	(538)
Office equipment
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	20
Balance, at end of the period	16	20
Office equipment | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	36	38
Additions	6
Foreign currency translation adjustment	(2)	(2)
Balance, at end of the period	40	36
Office equipment | Accumulated depreciation, amortisation and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	(16)	(11)
Foreign currency translation adjustment		3
Charge for the year	8	8
Balance, at end of the period	(24)	(16)
Information and communication equipment (ICT)
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	135
Balance, at end of the period	141	135
Information and communication equipment (ICT) | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	192	139
Additions	56	65
Foreign currency translation adjustment	(10)	(12)
Balance, at end of the period	238	192
Information and communication equipment (ICT) | Accumulated depreciation, amortisation and impairment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, at beginning of the period	(57)	(29)
Foreign currency translation adjustment	3	3
Charge for the year	43	31
Balance, at end of the period	$ (97)	$ (57)

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Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Leases
Balance at beginning	$ 501	$ 382
Additions	400	382
Depreciation charges	(277)	(227)
Foreign currency exchange difference	27	(36)
Balance at Ending	$ 651	$ 501

XML

Leases - Maturities of lease liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of quantitative information about right-of-use assets [line items]
Total lease commitments	$ 949
Less: imputed lease interest	(139)
Total lease liabilities	810
Current portion	379	$ 261
Non-current portion	$ 431	$ 320
Average incremental borrowing rate applied to the lease liabilities	15.69%	15.78%
Cash outflows related to leases	$ 300	$ 300	$ 200
2023
Disclosure of quantitative information about right-of-use assets [line items]
Total lease commitments	459
2024
Disclosure of quantitative information about right-of-use assets [line items]
Total lease commitments	284
2025
Disclosure of quantitative information about right-of-use assets [line items]
Total lease commitments	$ 206

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Investments (Details) $ in Millions	Dec. 31, 2022 USD ($)
Investments
Disclosure of fair value measurement of assets [line items]
Financial assets	$ 32.5
Fair value
Disclosure of fair value measurement of assets [line items]
Financial assets	$ 32.5

XML

Cash and cash equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalent
Short-term deposits	$ 9,965	$ 76,504
Current bank accounts	90,368	14,365
Total	$ 100,333	$ 90,869	$ 15,818	$ 7,338

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Share capital, share premium and other capital reserves - Summary (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share capital, share premium and other capital reserves
Authorized	90,000,000	90,000,000	10,236,941
Issued and fully paid	26,289,087	25,775,538	9,352,941
Additional paid-in capital	$ 194,424	$ 192,270
Share premium			$ 41,088
Common share
Share capital, share premium and other capital reserves
Par value	$ 0.14	$ 0.14	$ 0.01
Authorized	45,000,000	45,000,000	447,525
Issued and fully paid	26,289,087	25,775,538	281,775
Additional paid-in capital	$ 194,424	$ 192,270
Series A Preference Shares
Share capital, share premium and other capital reserves
Par value			$ 0.01
Authorized			1,755,845
Issued and fully paid			1,037,595
Share premium			$ 722
Series B Preference Shares
Share capital, share premium and other capital reserves
Par value			$ 0.01
Authorized			3,899,766
Issued and fully paid			3,899,766
Share premium			$ 18,340
Series C Preference Shares
Share capital, share premium and other capital reserves
Par value			$ 0.01
Authorized			4,133,805
Issued and fully paid			4,133,805
Share premium			$ 22,026
Preference share
Share capital, share premium and other capital reserves
Par value	$ 0.14		$ 0.01
Authorized	45,000,000	45,000,000	9,789,416
Issued and fully paid			9,071,166
Share premium			$ 41,088

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Share capital, share premium and other capital reserves - Preference share (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) tranche shares	Dec. 31, 2020 USD ($) tranche shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares
Share capital, share premium and other capital reserves
Proceeds from Series C financing, net	$ 61,798	$ 22,025
Share split, conversion ratio	221
Tranche one
Share capital, share premium and other capital reserves
Proceeds from issuance of shares net of cost of repurchase of stocks		$ 17,200
Tranche two and three
Share capital, share premium and other capital reserves
Proceeds from issuance of shares net of cost of repurchase of stocks	$ 56,600
Common share
Share capital, share premium and other capital reserves
Number of shares obliged to repurchase | shares		331,500
Common share | Tranche two and three
Share capital, share premium and other capital reserves
Number of shares obliged to repurchase | shares	165,750
Series A Preference Shares
Share capital, share premium and other capital reserves
Shares issued | shares				1,755,845
Issue price | $ / shares				$ 0.68
Proceeds from Series C financing, net				$ 1,200
Number of shares obliged to repurchase | shares		1,436,500
Amount of shares obliged to repurchase		$ 10,300
Number of remaining tranches | tranche	2
Series A Preference Shares | Tranche one
Share capital, share premium and other capital reserves
Number of shares obliged to repurchase | shares		718,250
Amount of shares obliged to repurchase		$ 4,900
Series A Preference Shares | Tranche two and three
Share capital, share premium and other capital reserves
Number of shares obliged to repurchase | shares	718,250
Series B Preference Shares
Share capital, share premium and other capital reserves
Shares issued | shares			3,899,766
Issue price | $ / shares			$ 4.61
Proceeds from Series C financing, net			$ 17,900
Series C Preference Shares
Share capital, share premium and other capital reserves
Proceeds from Series C financing, net		84,400
Proceeds from issuance of shares net of issuance costs		$ 73,200
Number of tranches | tranche	2	3
Issuance costs	$ 92	$ 647
Series C Preference Shares | Tranche one
Share capital, share premium and other capital reserves
Shares issued | shares		4,133,805
Proceeds from Series C financing, net		$ 22,700
Issuance costs		$ 600

XML

Share capital, share premium and other capital reserves - Common shares (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of classes of share capital [line items]
Proceeds from issue of ordinary shares		$ 94,189
Issuance of VUmc common stock (in shares)	491,352	235,664
Shares issued upon exercise of options	22,197
Amount of increase (decrease) in lieu of equity license liability		$ 3,700
Percentage payable in lieu of equity license liability	50.00%
Common share
Disclosure of classes of share capital [line items]
Par value per share	$ 0.14	$ 0.14	$ 0.01
IPO
Disclosure of classes of share capital [line items]
Share issue related cost		$ 11,500
IPO | Common share
Disclosure of classes of share capital [line items]
Number of shares issued and sold		6,700,000
Par value per share		$ 0.14
Issue price		$ 15.00
Proceeds from issue of ordinary shares		$ 89,000
Underwriters discount and commission		7,000
Share issue related cost		$ 4,500
Over-Allotment Option | Common share
Disclosure of classes of share capital [line items]
Number of shares issued and sold		425,712
Issue price		$ 15.00
Proceeds from issue of ordinary shares		$ 5,900
Underwriters discount and commission		$ 400

XML

Share capital, share premium and other capital reserves - Major shareholders (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share capital, share premium and other capital reserves
Shareholding percentage	100.00%	100.00%
Gilde Healthcare
Share capital, share premium and other capital reserves
Shareholding percentage	20.60%	21.00%
Versant Ventures
Share capital, share premium and other capital reserves
Shareholding percentage	17.50%	17.80%
Novo Holdings A/S
Share capital, share premium and other capital reserves
Shareholding percentage	12.70%	12.90%
Redmile Biopharma Investments
Share capital, share premium and other capital reserves
Shareholding percentage	10.60%	10.80%
Sanofi Foreign Participations B.V.
Share capital, share premium and other capital reserves
Shareholding percentage	7.30%	7.40%
Ysios Capital Partners, SGECR,S.A.U.
Share capital, share premium and other capital reserves
Shareholding percentage		6.20%
Other shareholders
Share capital, share premium and other capital reserves
Shareholding percentage	31.30%	23.90%

XML

Borrowings - Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Current borrowings	$ 4,640
Long-term borrowings		$ 4,284
Innovation Credit
Disclosure of detailed information about borrowings [line items]
Stated interest rate	10.00%
Borrowings	$ 4,640	$ 4,284

XML

Borrowings - Terms (Details) - Innovation Credit - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Innovation Credit received				$ 5,500
Stated interest rate	10.00%
Borrowings	$ 4,640	$ 4,284
Interest expense on borrowings and deposits, net	$ 400	$ 300	$ 200

XML

Trade payables and other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Trade and Other Payables [Line Items]
Trade payables and other	$ 3,965	$ 2,553
Bottom of range
Trade and Other Payables [Line Items]
Average credit period on domestic purchases of certain goods	7 days
Top of range
Trade and Other Payables [Line Items]
Average credit period on domestic purchases of certain goods	30 days

XML

Accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accrued expenses and other current liabilities.
Research and development external project costs	$ 5,399	$ 983
Personnel-related expenses	1,903	161
Professional fees	486	425
Other	405	310
Total	$ 8,193	$ 1,879

XML

Share-based compensation - Number of option and exercise price (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) Option $ / shares	Dec. 31, 2021 USD ($) Option $ / shares	Dec. 31, 2020 Option $ / shares
Share-based compensation
Granted, Number of options | $	2,358,458	1,801,088
2018 Stock Option Plan
Share-based compensation
Outstanding at Beginning, Number of options | Option	620,347	620,347
Exercised, Number of options | Option	(16,073)
Forfeited, Number of options | Option	(3,817)
Outstanding at ending, Number of options | Option	600,457	620,347	620,347
Exercisable, Number of options | Option	387,565
Outstanding at Beginning, Weighted average exercise price	$ 0.01	$ 0.01
Exercised, Weighted average exercise price	0.01
Forfeited, Weighted average exercise price	0.01
Outstanding at ending, Weighted average exercise price	0.01	$ 0.01	$ 0.01
2018 Stock Option Plan | Bottom of range
Share-based compensation
Exercised, Weighted average exercise price	0.01
2018 Stock Option Plan | Top of range
Share-based compensation
Exercised, Weighted average exercise price	$ 15.00
2020 U.S. Stock Option Plan,
Share-based compensation
Outstanding at Beginning, Number of options | Option	1,563,136	1,069,198
Granted, Number of options | Option		493,938
Exercised, Number of options | Option	(6,124)
Forfeited, Number of options | Option	(284,933)
Outstanding at ending, Number of options | Option	1,272,079	1,563,136	1,069,198
Exercisable, Number of options | Option	717,532
Outstanding at Beginning, Weighted average exercise price	$ 5.90	$ 2.76
Granted, Weighted average exercise price		12.69
Exercised, Weighted average exercise price	2.76
Forfeited, Weighted average exercise price	13.46
Outstanding at ending, Weighted average exercise price	$ 4.22	$ 5.90	$ 2.76
Outstanding, Weighted average remaining contractual term	7 years 9 months 29 days	8 years 10 months 24 days	9 years 6 months
Granted, Weighted average remaining contractual term		9 years 2 months 15 days
2021 Long-term Incentive Option Plan
Share-based compensation
Outstanding at Beginning, Number of options | Option	1,307,150
Granted, Number of options	2,358,458	1,307,150
Forfeited, Number of options | Option	(258,014)
Outstanding at ending, Number of options	3,407,594	1,307,150
Exercisable, Number of options | Option	470,454
Outstanding at Beginning, Weighted average exercise price	$ 6.03
Granted, Weighted average exercise price	4.01	$ 6.03
Forfeited, Weighted average exercise price	5.75
Outstanding at ending, Weighted average exercise price	$ 4.66	$ 6.03
Outstanding, Weighted average remaining contractual term	9 years 6 months 14 days	9 years 10 months 24 days
Granted, Weighted average remaining contractual term	9 years 9 months 14 days	9 years 10 months 24 days

XML

Share-based compensation - Fair value measurement (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) Y $ / shares	Dec. 31, 2021 USD ($) Y $ / shares	Dec. 31, 2020 USD ($) Y $ / shares
NL & US
Share-based compensation
Expected annual volatility	83.90%
Expected life, years | Y	6.08
Weighted average grant date fair value | $	$ 4.01
NL & US | Bottom of range
Share-based compensation
Fair value of the common share	$ 1.71
Exercise price	$ 2.34
Risk-free interest rate	1.65%
NL & US | Top of range
Share-based compensation
Fair value of the common share	$ 3.91
Exercise price	$ 5.50
Risk-free interest rate	3.78%
NL
Share-based compensation
Expected annual volatility		80.10%
Expected life, years | Y		6.08	3.92
Exercise price			$ 0
Risk-free interest rate			0.62%
Weighted average grant date fair value | $		$ 3.61	$ 2.71
NL | Bottom of range
Share-based compensation
Expected annual volatility			75.50%
Fair value of the common share		$ 3.42	$ 2.10
Exercise price		$ 5.10
Risk-free interest rate		0.30%
NL | Top of range
Share-based compensation
Expected annual volatility			90.00%
Fair value of the common share		$ 5.23	$ 2.76
Exercise price		$ 7.77
Risk-free interest rate		0.53%
US
Share-based compensation
Expected annual volatility		80.10%
Expected life, years | Y		6.08
Weighted average grant date fair value | $		$ 5.95
US | Bottom of range
Share-based compensation
Fair value of the common share		$ 3.12
Exercise price		$ 5.10
Risk-free interest rate		0.94%
US | Top of range
Share-based compensation
Fair value of the common share		$ 8.71
Exercise price		$ 15.00
Risk-free interest rate		1.34%

XML

Share-based compensation - Narratives (Details)	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Share-based compensation
Number of shares granted	2,358,458	1,801,088
Share-based compensation expenses	$ 4,100,000	$ 3,900,000	$ 600,000
Bottom of range
Share-based compensation
Incremental discount rate	10.00%
Top of range
Share-based compensation
Option exercisable term (in years)	10 years
Incremental discount rate	25.00%
Vesting schemes one
Share-based compensation
Vesting period	36 months
Vesting percentage	25.00%
Vesting percentage of remaining awards	75.00%
Vesting percentage total	100.00%
Vesting schemes two
Share-based compensation
Vesting period	48 months
Vesting percentage total	100.00%
Vesting schemes three
Share-based compensation
Vesting period	12 months
Vesting percentage total	100.00%

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Related parties - Key management compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related parties
Short term employee benefits	$ 2,673	$ 3,099	$ 1,518
Share-based payments	1,994	2,702	310
Post-employment benefits	108	92	74
Total key management compensation	$ 4,775	$ 5,893	$ 1,902

XML

Related parties - Director and shareholder compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Board fees	$ 320	$ 227
Consultancy fees		20	$ 55
Total director and shareholder compensation	320	247	55
Bottom of range
Disclosure of transactions between related parties [line items]
Related party expenses	$ 100	$ 100	$ 100

XML

Financial instruments, risk management and capital management (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Financial instruments, risk management and capital management
Cash and cash equivalents	$ 100,333	$ 90,869	$ 15,818	$ 7,338
Foreign exchange gain (loss)	2,923	2,040	$ (869)
Current liabilities	21,954	11,248
Borrowings		4,284
Credit risk
Financial instruments, risk management and capital management
Cash and cash equivalents	$ 100,300	90,900
Market risk
Financial instruments, risk management and capital management
Foreign currency exchange rate	16.8
Foreign exchange gain (loss)	$ 2,900
Additional gain or loss recognized in profit or loss	$ 5,300
Increase in interest rate or currency rate	1.00%
Liquidity risk
Financial instruments, risk management and capital management
Cash, cash equivalents and investments	$ 132,800
Current liabilities	17,600
Financial liabilities measured at amortized cost
Financial instruments, risk management and capital management
Financial liabilities	17,608	9,297
Financial liabilities measured at amortized cost | Borrowings
Financial instruments, risk management and capital management
Financial liabilities	4,640	4,284
Financial liabilities measured at amortized cost | Trade payables and other
Financial instruments, risk management and capital management
Financial liabilities	3,965	2,553
Financial liabilities measured at amortized cost | Accrued expenses and other current liabilities
Financial instruments, risk management and capital management
Financial liabilities	8,193	1,879
Financial liabilities measured at amortized cost | Lease liabilities
Financial instruments, risk management and capital management
Financial liabilities	810	581
Financial assets measured at amortized cost
Financial instruments, risk management and capital management
Financial assets	136,931	134,362
Financial assets measured at amortized cost | Cash and cash equivalents
Financial instruments, risk management and capital management
Financial assets	100,333	90,869
Financial assets measured at amortized cost | Investments
Financial instruments, risk management and capital management
Financial assets	32,535	42,334
Financial assets measured at amortized cost | Other non-current assets and security deposits
Financial instruments, risk management and capital management
Financial assets	809	796
Financial assets measured at amortized cost | Receivables and other
Financial instruments, risk management and capital management
Financial assets	$ 3,254	$ 363

XML

Commitments and Contingencies (Details) $ in Millions		12 Months Ended
	Mar. 29, 2021 USD ($) D shares	Dec. 31, 2022 shares	Dec. 31, 2021 USD ($) shares
Disclosure of contingent liabilities [line items]
Lease commitment			$ 1.7
Issuance of VUmc common stock (in shares) | shares		491,352	235,664
VUmc Agreement
Disclosure of contingent liabilities [line items]
Issuance of VUmc common stock (in shares) | shares	235,664	491,352
Percentage of shares issued in lieu of license liability		50.00%
Payment of license liability	$ 0.3
License liability payable	$ 4.7
Number of trading days prior to anniversary of IPO | D	2

XML

Revision of Immaterial Misstatements - Consolidated Statement of Profit and Loss and Comprehensive Profit and Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Foreign currency translation adjustment, overstatement		$ 3,200
Research and license revenue	$ 19,391	5,350	$ 3,747
Research and development	(40,105)	(36,945)	(15,701)
General and administrative	(14,124)	(12,018)	(2,719)
Total operating expenses	(54,229)	(48,963)	(18,420)
Operating loss	(34,838)	(43,613)	(14,673)
Foreign currency exchange gain (loss), net	2,923	2,040	(869)
Total non-operating income (loss)	3,180	1,415	(1,211)
Loss before income tax	(31,658)	(42,198)	(15,884)
Loss for period	(31,907)	(42,355)	(15,927)
Foreign currency translation adjustment	(6,749)	(5,642)	(202)
Total comprehensive loss	$ (38,656)	(47,997)	(16,129)
As reported
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Research and license revenue		5,000	3,500
Research and development		(37,193)
General and administrative		(12,160)
Total operating expenses		(49,353)
Operating loss		(44,353)	(14,920)
Foreign currency exchange gain (loss), net		(212)	(201)
Total non-operating income (loss)		(837)	(543)
Loss before income tax		(45,190)	(15,463)
Loss for period		(45,347)	(15,506)
Foreign currency translation adjustment		(6,210)	(577)
Total comprehensive loss		(51,557)	(16,083)
Adjustment
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Research and license revenue		350	247
Research and development		248
General and administrative		142
Total operating expenses		390
Operating loss		740	247
Foreign currency exchange gain (loss), net		2,252	(668)
Total non-operating income (loss)		2,252	(668)
Loss before income tax		2,992	(421)
Loss for period		2,992	(421)
Foreign currency translation adjustment		568	375
Total comprehensive loss		$ 3,560	$ (46)

XML

Revision of Immaterial Misstatements - Consolidated Statements of Financial Position and Changes in Equity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity	$ 86,040	$ 118,367	$ 7,622	$ 5,844
As reported
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		118,367	7,622
Equity-settled employee benefits reserve
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity	8,942	4,829	922	365
Equity-settled employee benefits reserve | As reported
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		5,219	922
Equity-settled employee benefits reserve | Adjustment
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		(390)
Foreign currency translation reserve
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity	(12,972)	(6,223)	(581)	(378)
Foreign currency translation reserve | As reported
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		(4,042)	(1,003)
Foreign currency translation reserve | Adjustment
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		(2,181)	421
Accumulated deficit
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity	$ (108,069)	(76,162)	(33,807)	$ (13,704)
Accumulated deficit | As reported
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		(78,733)	(33,386)
Accumulated deficit | Adjustment
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity		$ 2,571	$ (421)

XML

Revision of Immaterial Misstatements - Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loss before income tax	$ (31,658)	$ (42,198)	$ (15,884)
Foreign currency exchange gain (loss), net	(2,923)	(2,040)	869
Share-based compensation expense	4,113	3,907	557
Deferred revenue	33,510	(4,649)	6,176
Net cash provided by (used in) operating activities	4,043	(28,647)	(9,307)
Net increase in cash and cash equivalents	13,672	78,968	9,160
Effects of exchange rate changes	(4,208)	(3,917)	(680)
Cash and cash equivalents at end of year	$ 100,333	90,869	15,818	$ 7,338
As reported
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loss before income tax		(45,190)	(15,463)
Foreign currency exchange gain (loss), net		562	448
Share-based compensation expense		4,297
Cash and cash equivalents at end of year		90,869	15,818
Adjustment
Ifrs Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loss before income tax		2,992	(421)
Foreign currency exchange gain (loss), net		(2,602)	$ 421
Share-based compensation expense		$ (390)