10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

________________________________________________________________________________________

FORM 10-Q

________________________________________________________________________________________

☒ Quarterly Report Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2024

or

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Transition Period From ______ to ______.

Commission File Number: 001-40720

OMNIAB, INC.

(Exact name of registrant as specified in its charter)

Delaware	98-1584818
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
5980 Horton Street, Suite 600
Emeryville
CA	94608
(Address of principal executive offices)	(Zip Code)

(510) 250-7800

(Registrant's Telephone Number, Including Area Code)

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

Title of each class	Trading Symbol	Name of Each Exchange on Which Registered
Common stock, $0.0001 par value per share	OABI	The Nasdaq Global Market
Warrants to purchase common stock	OABIW	The Nasdaq Capital Market

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, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	☐	Accelerated Filer	☐
Non-Accelerated Filer	☒	Smaller Reporting Company	☒
Emerging Growth Company	☒

If an emerging growth company, 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of May 2, 2024, the registrant had 117,615,460 shares of common stock outstanding.

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TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION
	ITEM 1. Condensed Consolidated Financial Statements (unaudited)	3
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Operations	4
	Condensed Consolidated Statements of Comprehensive Loss	5
	Condensed Consolidated Statements of Stockholders' Equity	6
	Condensed Consolidated Statements of Cash Flows	7
	Notes to Condensed Consolidated Financial Statements	8
	ITEM 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	28
	ITEM 3. Quantitative and Qualitative Disclosures about Market Risk	33
	ITEM 4. Controls and Procedures	33
PART II. OTHER INFORMATION
	ITEM 1. Legal Proceedings	34
	ITEM 1A. Risk Factors	34
	ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds	34
	ITEM 3. Defaults Upon Senior Securities	34
	ITEM 4. Mine Safety Disclosures	34
	ITEM 5. Other Information	34
	ITEM 6. Exhibits	35
	SIGNATURES	36

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Part I – Financial Information

Item 1. Condensed Consolidated Financial Statements

OMNIAB, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share data)

	March 31, 2024		December 31, 2023
	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	19,060	$	16,358
Short-term investments	49,947		70,625
Accounts receivable, net	4,045		3,844
Prepaid expenses and other current assets	3,665		4,074
Total current assets	76,717		94,901
Intangible assets, net	152,055		155,467
Goodwill	83,979		83,979
Property and equipment, net	17,957		18,249
Operating lease right-of-use assets	19,362		19,884
Restricted cash	560		560
Other long-term assets	1,926		2,185
Total assets	$	352,556	$	375,225
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	3,556	$	4,411
Accrued expenses and other current liabilities	4,027		7,068
Current contingent liabilities	891		1,303
Current deferred revenue	5,530		6,848
Current operating lease liabilities	3,516		3,486
Total current liabilities	17,520		23,116
Long-term contingent liabilities	3,178		3,203
Deferred income taxes, net	8,737		11,354
Long-term operating lease liabilities	21,418		22,075
Long-term deferred revenue	279		862
Other long-term liabilities	31		30
Total liabilities	51,163		60,640
Stockholders' equity:
Preferred stock, $0.0001 par value; 100,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued and outstanding at March 31, 2024 and December 31, 2023	—		—
Common stock, $0.0001 par value; 1,000,000,000 shares authorized at March 31, 2024 and December 31, 2023; 117,388,789 and 116,859,468 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	12		12
Additional paid-in capital	359,726		353,890
Accumulated other comprehensive (loss) income	(17)		50
Accumulated deficit	(58,328)		(39,367)
Total stockholders’ equity	301,393		314,585
Total liabilities and stockholders’ equity	$	352,556	$	375,225

See accompanying notes to unaudited condensed consolidated financial statements.

3

OMNIAB, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in thousands, except per share data)

	Three Months Ended March 31,
	2024		2023
Revenues:
License and milestone revenue	$	716	$	12,646
Service revenue	2,766		3,958
Royalty revenue	319		315
Total revenues	3,801		16,919
Operating expenses:
Research and development	14,551		13,759
General and administrative	8,337		8,195
Amortization of intangibles	3,412		3,369
Other operating expense, net	54		49
Total operating expenses	26,354		25,372
Loss from operations	(22,553)		(8,453)
Other income:
Interest income	975		1,324
Total other income, net	975		1,324
Loss before income taxes	(21,578)		(7,129)
Income tax benefit	2,617		1,029
Net loss	$	(18,961)	$	(6,100)
Net loss per share, basic and diluted	$	(0.19)	$	(0.06)
Weighted-average shares outstanding, basic and diluted	100,755		99,158

See accompanying notes to unaudited condensed consolidated financial statements.

4

OMNIAB, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(Unaudited)

(in thousands)

	Three Months Ended March 31,
	2024		2023
Net loss	$	(18,961)	$	(6,100)
Unrealized net loss on available-for-sale securities	(67)		(2)
Comprehensive loss	$	(19,028)	$	(6,102)

See accompanying notes to unaudited condensed consolidated financial statements.

5

OMNIAB, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(Unaudited)

(in thousands, except share data)

	Common Stock			Additional paid-in capital		Accumulated other comprehensive income (loss)		Retained earnings (Accumulated deficit)		Total stockholders’ equity
	Shares	Amount
Balance at January 1, 2024	116,859,468	$	12	$	353,890	$	50	$	(39,367)	$	314,585
Net loss	—	—		—		—		(18,961)		(18,961)
Share-based compensation	—	—		5,695		—		—		5,695
Issuance of common stock under employee stock compensation plans, net of tax	529,321	—		141		—		—		141
Unrealized net loss on available-for-sale securities	—	—		—		(67)		—		(67)
Balance at March 31, 2024	117,388,789	$	12	$	359,726	$	(17)	$	(58,328)	$	301,393
Balance at January 1, 2023	115,218,229	$	12	$	330,100	$	9	$	11,252	$	341,373
Net loss	—	—		—		—		(6,100)		(6,100)
Share-based compensation	—	—		6,055		—		—		6,055
Issuance of common stock under employee stock compensation plans, net of tax	366,291	—		(524)		—		—		(524)
Unrealized net loss on available-for-sale securities	—	—		—		(2)		—		(2)
Balance at March 31, 2023	115,584,520	$	12	$	335,631	$	7	$	5,152	$	340,802

See accompanying notes to unaudited condensed consolidated financial statements.

6

OMNIAB, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)

	Three Months Ended March 31,
	2024		2023
Operating activities:
Net loss	$	(18,961)	$	(6,100)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	4,949		4,859
Share-based compensation	5,695		6,055
Amortization of discounts on short-term investments, net	(622)		(933)
Deferred income taxes, net	(2,617)		(941)
Change in estimated fair value of contingent liabilities	38		(273)
Other operating activities	(11)		(28)
Changes in operating assets and liabilities, net:
Accounts receivable, net	132		28,822
Prepaid expenses and other current assets	409		789
Other long-term assets	259		106
Accounts payable, accrued expenses, and other current liabilities	(3,424)		(1,743)
Operating lease liabilities	(627)		62
Deferred revenue	(2,252)		(2,987)
Net cash provided by (used in) operating activities	(17,032)		27,688
Investing activities:
Purchases of short-term investments	(5,415)		(39,063)
Proceeds from the maturity of short-term investments	26,000		4,000
Purchases of property and equipment	(926)		(234)
Payments to contingent liabilities holders	(400)		(2,080)
Proceeds from sale of short-term investments	678		205
Net cash provided by (used in) investing activities	19,937		(37,172)
Financing activities:
Payments to contingent liabilities holders	(75)		—
Proceeds from issuance of common stock from stock plans	1,003		186
Taxes paid related to net share settlement of equity awards	(862)		(759)
Payment of transaction costs	(269)		(472)
Net cash used in financing activities	(203)		(1,045)
Net change in cash, cash equivalents and restricted cash	2,702		(10,529)
Cash, cash equivalents and restricted cash at beginning of period	16,918		33,839
Cash, cash equivalents and restricted cash at end of period	$	19,620	$	23,310
Supplemental cash flow information:
Deferred revenue recorded in accounts receivable	$	351	$	358
Supplemental non-cash investing and financing activities:
Purchase of fixed assets recorded in accounts payable	$	464	$	102
Intangible additions recorded in contingent liabilities	$	—	$	396

See accompanying notes to unaudited condensed consolidated financial statements.

7

OMNIAB, INC.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1. Organization and Basis of Presentation

Description of Business

OmniAb, Inc. (“OmniAb” or the “Company”, formerly known as Avista Public Acquisition Corp. II (“APAC”)) is a biotechnology company that licenses cutting edge discovery research technology to the pharmaceutical and biotech industry to enable the discovery of next-generation therapeutics. The Company’s technology platform creates and screens diverse antibody repertoires and is designed to quickly identify optimal antibodies and other target-binding proteins for its partners’ drug development efforts. At the heart of the OmniAb platform is something the Company calls Biological Intelligence™, which powers the immune systems of its proprietary, engineered transgenic animals to create optimized antibody candidates for human therapeutics. The Company primarily derives revenue from license fees for technology access, milestones from partnered programs and service revenue from research programs.

Business Combination

On November 1, 2022 (the “Closing Date”), the Company, Ligand Pharmaceuticals Incorporated, a Delaware corporation (“Ligand”), OmniAb Operations, Inc., a Delaware corporation and wholly-owned subsidiary of Ligand (“Legacy OmniAb”, formerly known as OmniAb, Inc.), and Orwell Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of APAC (“Merger Sub”), consummated the transactions contemplated by the Agreement and Plan of Merger (the “Merger Agreement”), dated as of March 23, 2022 (the “Business Combination”). See Note 3 – Business Combination for further details.

Basis of Presentation

The Company’s accompanying condensed consolidated financial statements have been prepared in accordance with U.S. GAAP. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as included in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”). The financial information for the three months ended March 31, 2024 and 2023, is unaudited but includes all normal and recurring adjustments unless indicated otherwise, which the Company considered necessary for fair presentation of its condensed consolidated statements of operations and comprehensive loss.

The accompanying consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and accounts within the Company have been eliminated.

Liquidity and Capital Resources

The Company expects to continue to incur losses as it invests in research and development activities to improve its technology and platform, market and sell its technologies to existing and new partners, add operational, financial and management information systems and personnel to support its operations and incur ongoing costs associated with operating as a public company. The Company’s ability to continue its operations is dependent upon its ability to generate cash flows from operations and potentially obtain additional capital in the future. The Company believes its existing cash, cash equivalents and short-term investments and the cash it expects to generate from operations will provide it the flexibility needed to meet operating, investing, and financing needs and support operations through at least the next 12 months.

The accompanying condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.

Emerging Growth Company

OmniAb qualifies as an emerging growth company as defined in Section 2(a) of the Securities Act of 1933, as amended, (“Securities Act”), as modified by the Jumpstart Our Business Startups Act of 2012 (“JOBS Act”).

8

Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. OmniAb has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, OmniAb, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of OmniAb’s financial statements with another public company, which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period, difficult because of the potential differences in accounting standards used.

2. Summary of Significant Accounting Policies

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and the accompanying notes. Actual results may differ from those estimates.

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents consist of cash and highly liquid investments with maturities of three months or less when purchased. Cash and cash equivalents generally consist of bank deposits, money market funds as well as U.S. government and agency securities. The following table provides a reconciliation of the components of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheets to the total of the amount presented in the condensed consolidated statements of cash flows:

(in thousands)	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	19,060	$	16,358
Restricted cash	560		560
Total cash, cash equivalents and restricted cash presented in the condensed consolidated statements of cash flows	$	19,620	$	16,918

Restricted cash relates to deposits for the Company’s property leases. The restriction will lapse when the related leases expire.

Short-term Investments

Short-term investments generally consist of commercial paper, corporate debt securities, asset-backed securities and government and agency securities. The Company classifies short-term investments as “available-for-sale” as the sale of such investments may be required prior to maturity to implement management strategies. Therefore, the Company has classified all investments with maturity dates beyond three months at the date of purchase as current assets in the accompanying condensed consolidated balance sheets based upon its ability and intent to use the investments to satisfy the liquidity needs of current operations. Any premium or discount arising at purchase is amortized and/or accreted to interest income as an adjustment to yield using the straight-line method over the life of the instrument. Investments are reported at their estimated fair value. Unrealized gains and losses are included in accumulated other comprehensive income (loss) as a component of stockholders’ equity until realized.

9

Accounts Receivable

Accounts receivable represents the amounts billed to the Company’s partners that are due unconditionally for revenue it has earned. The Company establishes an allowance for credit losses to present the net amount of accounts receivable expected to be collected. The allowance requires an estimation based upon historical loss experienced and adjusted for factors that are relevant to determining the expected collectability of accounts receivable. Some of these factors include delinquency trends, aging behavior of receivables, credit and liquidity quality indicators for industry groups, customer classes or individual customers and the current and expected future economic and market conditions.

Property and Equipment

Property and equipment are stated at cost, subject to review for impairment, and depreciated over the estimated useful lives of the assets using the straight-line method. Amortization of leasehold improvements is recorded over the shorter of the lease term or estimated useful life of the related asset. Maintenance and repairs are charged to operations as incurred. When assets are sold, or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in operating income or expense.

Asset	Estimated Useful Life
Lab and office equipment	4 - 7 years
Computer hardware	3 - 5 years
Leasehold improvements	Shorter of the useful life or remaining lease term
Computer software	Shorter of 3 years or useful life of asset

Acquisitions

The Company first determines whether a set of assets acquired constitutes a business and should be accounted for as a business combination. If the assets acquired are not a business, the Company accounts for the transaction as an asset acquisition. Business combinations are accounted for by using the acquisition method of accounting which requires the Company to use significant estimates and assumptions, including fair value estimates, as of the business combination date and to refine those estimates as necessary during the measurement period (defined as the period, not to exceed one year, in which the Company may adjust the provisional amounts recognized).

Under the acquisition method of accounting, the Company recognizes separately from goodwill the identifiable assets acquired, the liabilities assumed, including contingent consideration and all contractual contingencies, generally at the acquisition date fair value. Contingent purchase consideration to be settled in cash is remeasured to estimated fair value at each reporting period with the change in fair value recorded in the statement of operations. Costs that the Company incurs to complete the business combination such as investment banking, legal and other professional fees are not considered part of consideration and the Company charges them to general and administrative expense as they are incurred.

The Company measures goodwill as of the acquisition date as the excess of consideration transferred, which is also measured at fair value, over the net of the acquisition date amounts of the identifiable assets acquired and liabilities assumed.

Should the initial accounting for a business combination be incomplete by the end of a reporting period that falls within the measurement period, the Company reports provisional amounts in its financial statements. During the measurement period, the Company adjusts the provisional amounts recognized at the acquisition date to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date and the Company records those adjustments to its financial statements in the period of change, if any.

Under the acquisition method of accounting for business combinations, if the Company identifies changes to acquired deferred tax asset valuation allowances or liabilities related to uncertain tax positions during the measurement period and they relate to new information obtained about facts and circumstances that existed as of the acquisition date, those changes are considered a measurement period adjustment and the Company records the offset to goodwill. The Company records all other changes to deferred tax asset valuation allowances and liabilities related to uncertain tax positions in current period income tax expense.

10

Goodwill, Intangible Assets and Other Long-Lived Assets

Goodwill, which has an indefinite useful life, represents the excess of cost over fair value of net assets acquired. Goodwill is reviewed for impairment at least annually during the fourth quarter, or more frequently if an event occurs indicating the potential for impairment. During the goodwill impairment review, the Company assesses qualitative factors to determine whether it is more likely than not that the fair value of its reporting unit is less than the carrying amount, including goodwill. The Company operates in one reporting unit. The qualitative factors include, but are not limited to, macroeconomic conditions, industry and market considerations, cost factors, the overall financial performance, and events affecting the reporting unit. If, after assessing the totality of these qualitative factors, the Company determines that it is not more likely than not that the fair value of its reporting unit is less than the carrying amount, then no additional assessment is deemed necessary. Otherwise, the Company proceeds to perform the quantitative assessment. The Company will then evaluate goodwill for impairment by comparing the estimated fair value of the reporting unit to its carrying value, including the associated goodwill. To determine the fair value, the Company generally uses a combination of market approach based on OmniAb and comparable publicly traded companies in similar lines of businesses and the income approach based on estimated discounted future cash flows. The Company’s cash flow assumptions consider historical and forecasted revenue, operating costs and other relevant factors. The Company may also elect to bypass the qualitative assessment in a period and elect to proceed to perform the quantitative assessment for the goodwill impairment test. The Company performed the annual assessment for goodwill impairment during the fourth quarter of 2023. No impairment indicators were noted in any periods presented in the condensed consolidated financial statements under the qualitative assessment.

The Company’s identifiable intangible assets are composed of acquired core technologies, licensed technologies, contractual relationships, customer relationships and trade names. Identifiable intangible assets with finite lives are generally amortized on a straight-line basis over the assets’ respective estimated useful life. The Company regularly performs reviews to determine if any event has occurred that may indicate that intangible assets with finite useful lives and other long-lived assets are potentially impaired. If indicators of impairment exist, an impairment test is performed to assess the recoverability of the affected assets by determining whether the carrying amount of such assets exceeds the undiscounted expected future cash flows. If the affected assets are not recoverable, the Company estimates the fair value of the assets and records an impairment loss if the carrying value of the assets exceeds the fair value. Factors that may indicate potential impairment include market conditions, industry and economic trends, changes in regulations, clinical success, historical and forecasted financial results, significant changes in the ability of a particular asset to generate positive cash flows, and the pattern of utilization of a particular asset. The Company did not identify indicators of impairment for the finite-lived intangibles and other long-lived assets at March 31, 2024 and December 31, 2023.

Public, Private Placement, Forward Purchase and Backstop Common Stock Warrants

The Company assumed 7,666,667 warrants originally issued in APAC’s initial public offering (the “Public Warrants”) and 8,233,333 warrants issued in a private placement that closed concurrently with APAC’s initial public offering, (the “Private Placement Warrants”) in the Business Combination. Additionally, as further discussed in Note 3 – Business Combination, pursuant to the Amended and Restated Forward Purchase Agreement, dated as of March 23, 2022 (the “A&R FPA”), on the Closing Date, the Company issued 1,666,667 warrants in the Forward Purchase (the “Forward Purchase Warrants”) and 1,445,489 warrants in the Redemption Backstop (the “Backstop Warrants”). The Public, Private Placement, Forward Purchase and Backstop Warrants entitle the holder to purchase one share of the Company’s common stock at an exercise price of $11.50 per share.

The Public Warrants are publicly traded and are exercisable for cash unless certain conditions occur, such as the failure to have an effective registration statement related to the shares issuable upon exercise or redemption by the Company under certain conditions, at which time the warrants may be cashless exercised at the option of the Company. The Private Placement Warrants have terms and provisions that are identical to the Public Warrants except that the Private Placement Warrants were not transferable, assignable or salable until 30 days after the completion of the Business Combination. The Private Placement Warrants will be redeemable by the Company in all redemption scenarios and exercisable by the holders on the same basis as the Public Warrants. The Forward Purchase Warrants and the Backstop Warrants have the same terms as the Private Placement Warrants.

The Company evaluated the Public, Private Placement, Forward Purchase and Backstop Warrants under ASC 815-40, Derivatives and Hedging-Contracts in Entity’s Own Equity (“ASC 815-40”), and concluded they meet the criteria for equity classification as they are considered to be indexed to the Company’s own stock.

11

Revenue Recognition

The Company applies the following five-step model in accordance with ASC 606, Revenue from Contracts with Customers, in order to determine revenue: (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 distinct in the context of the contract; (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 when (or as) the Company satisfies each performance obligation.

The Company’s revenue is typically derived from license agreements with its partners and consists of: (i) upfront or annual payments for technology access (license revenue), (ii) payments for the performance of research services (service revenue), (iii) downstream payments in the form of preclinical, intellectual property, clinical, regulatory, and commercial milestones (milestone revenue) and (iv) royalties on net sales from partners’ product sales (royalty revenue).

License fees are generally recognized at a point in time once the Company grants partners access to intellectual property rights. The Company generally satisfies its obligation to grant intellectual property rights on the effective date of the contract.

The Company recognizes service revenue for contracted R&D services performed for partners over time. The Company measures its progress using an input method based on the effort it expends or costs it incurs toward the satisfaction of its performance obligation. The Company estimates the amount of effort it expends, including the time it will take to complete the activities, or the costs it may incur in a given period, relative to the estimated total effort or costs to satisfy the performance obligation. This results in a percentage that it multiplies by the transaction price to determine the amount of revenue recognized each period. This approach requires the Company to make estimates and use judgment. If estimates or judgments change over the course of the collaboration, they may affect the timing and amount of revenue recognized in current and future periods.

The Company includes contingent milestone based payments in the estimated transaction price when there is a basis to reasonably estimate the amount of the payment and it is probable of being achieved. These estimates are based on historical experience, anticipated results and its best judgment at the time. If the contingent milestone based payment is sales-based, we apply the royalty recognition constraint and record revenue when the underlying sale has taken place. Significant judgments must be made in determining the transaction price for licenses of intellectual property. Because of the risk that products in development with partners will not reach development based milestones or receive regulatory approval, the Company generally recognizes any contingent payments that would be due to it upon or after achievement of the development milestone or regulatory approval.

Deferred Revenue

Depending on the terms of the arrangement, the Company may also defer a portion of the consideration received if it needs to satisfy a future obligation.

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the condensed consolidated balance sheets. The Company generally receives payment at the point it satisfies its obligation or soon after. Any fees billed in advance of being earned are recorded as deferred revenue. During the three months ended March 31, 2024, the amount recognized as revenue that was previously deferred at December 31, 2023 was $2.2 million. During the three months ended March 31, 2023, the amount recognized as revenue that was previously deferred at December 31, 2022 was $3.1 million.

Disaggregation of Revenue

The disaggregated revenue categories are presented on the face of the condensed consolidated statements of operations.

Research and Development Expenses

Research and development expenses consist of material, equipment, facilities and labor costs of scientific staff who are working pursuant to collaborative agreements and other research and development projects. Also included in research and development expenses are third-party costs incurred for research programs including in-licensing costs, and costs incurred by other research and development service vendors. The Company expenses these costs as they are incurred. When the Company makes payments for research and development services prior to the services being rendered, it records those amounts as prepaid expenses on its condensed consolidated balance sheets and it expenses them as the services are provided.

12

Share-Based Compensation

The Company recognizes share-based compensation expense based on the estimated fair value on a straight-line basis over the requisite service periods of the awards, taking into consideration forfeitures as they occur. The fair value of RSUs is determined by the closing market price of the Company’s common stock on the date of grant. PRSUs generally represent the right to receive a certain number of shares of common stock based on the achievement of the Company’s corporate performance goals and continued employment during the vesting period. Share-based compensation expense for market-based PRSUs is measured using the Monte-Carlo valuation model and is not adjusted for the achievement, or lack thereof, of market conditions.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options granted and stock purchases under the ESPP. The model assumptions include expected volatility, term, dividends, and the risk-free interest rate.

The Company measures and recognizes compensation expense for shares to be issued under its employee stock purchase plan based on an estimated grant date fair value recognized on a straight-line basis over the offering period.

Income Taxes

The Company provides for income taxes under the asset and liability method prescribed by the ASC Topic 740, Income Taxes (“Topic 740”). Deferred tax assets and liabilities are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates in effect when the differences are expected to reverse. If necessary, deferred tax assets are reduced by a valuation allowance to reflect the uncertainty associated with their ultimate realization.

The Company accounts for uncertain tax positions recognized in the condensed consolidated financial statements in accordance with the provisions of Topic 740 by prescribing a more-likely-than-not threshold for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances. The Company evaluates uncertain tax positions on a quarterly basis and adjusts the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions. Any changes to these estimates, based on the actual results obtained and/or a change in assumptions, could affect its income tax provision in future periods. Interest and penalty charges, if any, related to unrecognized tax benefits would be classified as a provision for income tax in its condensed consolidated statements of operations.

Income (Loss) Per Share

Basic income (loss) per share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted income (loss) per share is computed based on the sum of the weighted average number of common shares and potentially dilutive common shares outstanding during the period.

Comprehensive Income (Loss)

Comprehensive income (loss) represents net income (loss) adjusted for the change during the periods presented in unrealized gains and losses on available-for-sale debt securities and reclassification adjustments for realized gains or losses included in net income (loss). The unrealized gains or losses are reported in the condensed consolidated statements of comprehensive income (loss).

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed below, the Company believes that the impact of recently issued standards are either not applicable to the Company or will not have a material impact on its consolidated financial statements upon adoption.

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The following table provides a brief description of recently issued accounting standards:

Standard	Description	Effective Date	Effect on the Financial Statements or Other Significant Matters
ASU 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures	ASU 2023-07 updates reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses.	Effective for the Company for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024.	The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements and disclosures.
ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures	The amendments in this ASU address investor requests for more transparency about income tax information through improvements to tax disclosures primarily related to the rate reconciliation and income taxes paid information. The ASU also includes certain other amendments to improve the effectiveness of income tax disclosures.	Effective for the Company for annual periods beginning after December 15, 2024, with early adoption permitted.	The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements and disclosures.

Segment Information

Operating segments are components of an enterprise for which separate financial information is available and is evaluated regularly by the Company’s chief operating decision-maker in deciding how to allocate resources and assess performance. The Company manages its business as one operating segment.

3. Business Combination

In connection with, and as contemplated by, the Merger Agreement, on November 1, 2022, in accordance with the terms of the Separation and Distribution Agreement, dated as of March 23, 2022, by and among APAC, Ligand and Legacy OmniAb (the “Separation Agreement”), Ligand transferred the Legacy OmniAb business to Legacy OmniAb and made a contribution to the capital of Legacy OmniAb of $1.8 million, after deducting certain transaction and other expenses reimbursable by Legacy OmniAb (the “Separation”). Following the Separation, Ligand distributed on a pro rata basis to its stockholders all of the shares of common stock, par value $0.001 per share, of Legacy OmniAb (“Legacy OmniAb Common Stock”) held by Ligand, such that each holder of shares of common stock, par value $0.001 per share, of Ligand (“Ligand Common Stock”) was entitled to receive one share of Legacy OmniAb Common Stock for each share of Ligand Common Stock held by such holder as of the record date for the distribution, October 26, 2022 (the “Distribution”). Following the Separation and Distribution, on November 1, 2022, Merger Sub merged with and into Legacy OmniAb, with Legacy OmniAb surviving as a direct, wholly owned subsidiary of OmniAb.

At the Closing Date, each outstanding share of Legacy OmniAb Common Stock was cancelled in exchange for 4.90007 shares of common stock of OmniAb, par value $0.0001 per share (“OmniAb Common Stock”) and 0.75842 shares of OmniAb Common Stock subject to certain price-based earnout triggers (the “Earnout Shares”). Holders of shares of Legacy OmniAb Common Stock received an aggregate 82,611,789 shares of the OmniAb Common Stock, excluding Earnout Shares, as consideration in the Business Combination.

In addition, all outstanding Legacy OmniAb equity awards were converted into OmniAb equity awards to purchase, in the case of options, or receive, in the case of restricted stock units and performance-vesting restricted stock units, shares of OmniAb Common Stock, in each case, equal to the number of shares underlying such Legacy OmniAb equity awards multiplied by 4.90007. Each holder of an outstanding Legacy OmniAb equity award also received Earnout Shares equal to the number of shares of Legacy OmniAb Common Stock underlying such equity award multiplied by 0.75842.

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Holders of shares of Legacy OmniAb Common Stock and holders of Legacy OmniAb equity awards received an aggregate 14,999,243 Earnout Shares as consideration in the Business Combination. Fifty percent of the Earnout Shares will vest on the date on which the volume-weighted average price (“VWAP”) equals or exceeds $12.50 on any 20 trading days in any 30 consecutive trading-day period, and all remaining Earnout Shares will vest on the date on which the VWAP equals or exceeds $15.00 on any 20 trading days in any 30 consecutive trading-day period, in each case provided such vesting occurs during the five year period following the Closing Date (the “Earnout Period”); provided, that in the event of a Change of Control (as defined in the Merger Agreement) during the Earnout Period pursuant to which OmniAb or any of its stockholders have the right to receive, directly or indirectly, cash, securities or other property attributing a value of at least $12.50 (with respect to 50% of the Earnout Shares) or $15.00 (with respect to all Earnout Shares) per share of OmniAb Common Stock, and such Change of Control has been approved by a majority of the independent directors of the OmniAb board of directors, then such Earnout Shares shall be deemed to have vested immediately prior to such Change of Control. The Earnout Shares are accounted for as equity-classified equity instruments and recorded in additional paid-in capital as part of the Business Combination.

Pursuant to the Sponsor Insider Letter Agreement executed concurrently with the Merger Agreement, by and among APAC, Avista Acquisition LP II (the “Sponsor”), Legacy OmniAb and certain insiders of APAC, 1,293,299 shares of OmniAb Common Stock held by the Sponsor became subject to the same price-based vesting conditions as the Earnout Shares (the “Sponsor Earnout Shares”). The Sponsor Earnout Shares are accounted for as equity-classified equity instruments and recorded in additional paid-in capital as part of the Business Combination.

On the Closing Date, the Company completed the issuance and sale of 1,500,000 shares of the OmniAb Common Stock and 1,666,667 Forward Purchase Warrants to the Sponsor for an aggregate purchase price of $15.0 million (the “Forward Purchase”), pursuant to the amended and restated forward purchase agreement (the “A&R FPA”). Additionally, and also pursuant to the A&R FPA, on the Closing Date, the Company completed the sale of 8,672,934 shares of the OmniAb Common Stock and 1,445,489 Backstop Warrants to the Sponsor for a purchase price of $10.00 per share and aggregate purchase price of $86.7 million in order to backstop shareholder redemptions which would have otherwise resulted in the cash proceeds available to OmniAb following the Business Combination from OmniAb’s trust account to be less than $100,000,000. Refer to Note 9 – Stockholders' Equity, for additional information on the accounting for the Forward Purchase Warrants and Backstop Warrants.

4. Fair Value Measurement

The Company measures its financial assets and liabilities at fair value, which is defined as the exit price, or the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

The Company uses the following three-level valuation hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs to value its financial assets and liabilities:

•Level 1 — Observable inputs such as unadjusted quoted prices in active markets for identical instruments.

•Level 2 — Quoted prices for similar instruments in active markets or inputs that are observable for the asset or liability, either directly or indirectly.

•Level 3 — Significant unobservable inputs based on the Company’s assumptions.

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Financial Instruments Measured on a Recurring Basis

The following tables provide a summary of the assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023:

	Fair Value Measurements as of March 31, 2024
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,589	$	—	$	—	$	12,589
Total cash equivalents	$	12,589	$	—	$	—	$	12,589
Short-term investments:
Government and agency securities	$	48,099	$	—	$	—	$	48,099
Asset-backed securities	—		1,848		—		1,848
Total short-term investments	$	48,099	$	1,848	$	—	$	49,947
Liabilities:
Current contingent liabilities	$	—	$	—	$	891	$	891
Long-term contingent liabilities	—		—		3,178		3,178
Total contingent liabilities	$	—	$	—	$	4,069	$	4,069

	Fair Value Measurements as of December 31, 2023
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,289	$	—	$	—	$	12,289
Total cash equivalents	$	12,289	$	—	$	—	$	12,289
Short-term investments:
Government and agency securities	$	63,109	$	4,998	$	—	$	68,107
Asset-backed securities	—		2,518		—		2,518
Total short-term investments	$	63,109	$	7,516	$	—	$	70,625
Liabilities:
Current contingent liabilities	$	—	$	—	$	1,303	$	1,303
Long-term contingent liabilities	—		—		3,203		3,203
Total contingent liabilities	$	—	$	—	$	4,506	$	4,506

The carrying amounts reported in the Company’s condensed consolidated balance sheets for accounts receivable, other assets, accounts payable and other accrued expenses and other current liabilities approximate fair value due to their relatively short periods to maturity.

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Available-for-Sale Securities

The Company obtains the fair value of its Level 2 available-for-sale securities from third-party pricing services. The pricing services utilize industry standard valuation models whereby all significant inputs, including benchmark yields, reported trades, broker/dealer quotes, issuer spreads, bids, offers, or other market-related data, are observable. The Company validates the prices provided by the third-party pricing services by reviewing their pricing methods and obtaining market values from other pricing sources. The Company did not adjust or override any fair value measurements provided by these pricing services as of March 31, 2024 or December 31, 2023. The Company has not transferred any investment securities between classification levels.

Contingent Liabilities

Contingent liabilities are measured at fair value each reporting period by using a probability weighted income approach.

A reconciliation of the Level 3 financial instruments as of March 31, 2024 and December 31, 2023 is as follows:

(in thousands)	Icagen(1)		Taurus(2)		xCella(2)		Total
Balance as of January 1, 2023	$	4,747	$	1,600	$	1,764	$	8,111
Payments to CVR holders	(300)		(1,600)		(2,840)		(4,740)
Fair value adjustments to contingent liabilities	(341)		400		1,076		1,135
Balance as of December 31, 2023	4,106		400		—		4,506
Payments to CVR holders	(75)		(400)		—		(475)
Fair value adjustments to contingent liabilities	38		—		—		38
Balance as of March 31, 2024	$	4,069	$	—	$	—	$	4,069

_____________

(1)Changes in the fair values of contingent liabilities in connection with the acquisition of Icagen are recognized in “Other operating expense, net” in the condensed consolidated statements of operations and in the operating section of the statements of cash flows. Payments to CVR holders are disclosed in the financing section of the statements of cash flows.

(2)Changes in the fair values of contingent liabilities in connection with the acquisitions of Taurus and xCella are recognized in “Intangible assets, net” in the condensed consolidated balance sheets. Payments to CVR holders are disclosed in the investing section of the statement of cash flows.

Contingent liabilities are classified as Level 3 liabilities as their valuation requires substantial judgment and estimation of factors that are not currently observable in the market. These subjective estimates include but are not limited to assumptions involving the achievement probability of certain developmental and commercialization milestones, discount rates, and projected years of payments. If different assumptions were used for the various inputs to the valuation approaches, the estimated fair value could be materially higher or lower than the fair value determined.

Assets Measured on a Non-Recurring Basis

The Company applies fair value techniques on a non-recurring basis associated with valuing potential impairment losses related to goodwill, finite-lived intangible assets, and long-lived assets. No such fair value impairment was recognized during the three months ended March 31, 2024 or year ended December 31, 2023.

5. Short-Term Investments

The Company classified short-term investments as available-for-sale securities, as the sale of such investments may be required prior to maturity to implement management strategies. The following tables summarize short-term investments as of March 31, 2024 and December 31, 2023:

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	As of March 31, 2024
			Unrealized
(in thousands)	Amortized Cost		Gains		Losses		Estimated Fair Value
Government and agency securities	$	48,115	$	7	$	(22)	$	48,100
Asset backed securities	1,850		—		(3)		1,847
Total short-term investments	$	49,965	$	7	$	(25)	$	49,947

	As of December 31, 2023
			Unrealized
(in thousands)	Amortized Cost		Gains		Losses		Estimated Fair Value
Government and agency securities	$	68,054	$	57	$	(4)	$	68,107
Asset-backed securities	2,522		—		(4)		2,518
Total short-term investments	$	70,576	$	57	$	(8)	$	70,625

The Company classified all investments with maturity dates beyond three months at the date of purchase as short-term investments in the condensed consolidated balance sheets based upon its ability and intent to use the investments to satisfy the liquidity needs of current operations. The following table summarizes available-for-sale investments by maturity as of March 31, 2024:

(in thousands)	Amortized Cost		Estimated Fair Value
Due in one year or less	$	49,965	$	49,947
Due after one year	—		—
Total short-term investments	$	49,965	$	49,947

The following tables summarize the Company’s available-for-sale investments’ gross unrealized losses and fair value aggregated by investment category and length of time that individual securities have been in a continuous loss position, as of March 31, 2024 and December 31, 2023:

	As of March 31, 2024
	Less than 12 months					More than 12 months					Total
(in thousands)	Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses
Government and agency securities	14	$	29,339	$	(21)	—	$	—	$	—	14	$	29,339	$	(21)
Asset backed securities	3	1,848		(3)		—	—		—		3	1,848		(3)
	17	$	31,187	$	(24)	—	$	—	$	—	17	$	31,187	$	(24)

	As of December 31, 2023
	Less than 12 months					More than 12 months					Total
(in thousands)	Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses
Government and agency securities	5	$	10,402	$	(4)	—	$	—	$	—	5	$	10,402	$	(4)
Asset backed securities	3	2,518		(4)		—	—		—		3	2,518		(4)
	8	$	12,920	$	(8)	—	$	—	$	—	8	$	12,920	$	(8)

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The Company had certain available-for-sale debt securities in an unrealized loss position without an allowance for credit loss as of March 31, 2024. Unrealized losses on these debt securities have not been recognized into income because (1) the issuers have high credit quality, (2) management does not intend to sell and it is likely that management will not be required to sell these securities prior to their anticipated recovery and (3) the decline in fair value is largely due to market conditions and/or changes in interest rates. The issuers continue to make timely interest payments on the securities, and the fair value is expected to recover as the bonds approach maturity.

6. Balance Sheet Account Details

Property and Equipment, Net

Property and equipment, net, consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Leasehold improvements	$	16,077	$	16,077
Lab and office equipment	9,485		9,452
Computer equipment and software	754		754
Construction in progress	1,532		842
Property and equipment, at cost	27,848		27,125
Less accumulated depreciation	(9,891)		(8,876)
Total property and equipment, net	$	17,957	$	18,249

Depreciation expense, which is included in operating expense, was $1.0 million during the three months ended March 31, 2024 and $1.0 million during the three months ended March 31, 2023.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Compensation	$	2,939	$	5,247
Due to former parent	496		1,234
Professional service fees	229		431
Royalties owed to third parties	70		139
Other	293		17
Total accrued expenses and other current liabilities	$	4,027	$	7,068

7. Goodwill and Intangible Assets

Goodwill and intangible assets, net consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Goodwill	$	83,979	$	83,979
Definite-lived intangible assets
Completed technology	233,158		233,158
Less: Accumulated amortization	(87,443)		(84,328)
Customer relationships	11,100		11,100
Less: Accumulated amortization	(4,760)		(4,463)
Intangible assets, net	$	152,055	$	155,467
Total goodwill and other identifiable intangible assets, net	$	236,034	$	239,446

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Goodwill

There were no changes in the carrying amount of goodwill during the three months ended March 31, 2024 and 2023.

Intangible Assets

Amortization of finite-lived intangible assets is computed using the straight-line method over the estimated useful life of the asset of up to 20 years and is reflected within amortization of intangibles expense on the condensed consolidated statements of operations. Amortization expense of $3.4 million was recognized during the three months ended March 31, 2024 and 2023. For each of the three months ended March 31, 2024 and 2023, there was no impairment of intangible assets with finite lives.

The remaining weighted-average useful life of definite lived intangible assets is 11.7 years. At March 31, 2024, future amortization expense on intangible assets is estimated to be as follows (in thousands):

Maturity Dates	Amount
Remaining nine months ended December 31, 2024	$	10,235
2025	13,527
2026	13,487
2027	13,487
2028	13,487
Thereafter	87,832
Total future amortization expense	$	152,055

8. Commitments and Contingencies

Lease Commitments

The Company’s corporate headquarters are located in Emeryville, California and its research facilities are located in Emeryville and Dixon, California, Durham, North Carolina and Tucson, Arizona. It leases approximately 70,000 square feet of space under leases expiring from 2026 to 2032.

The below tables provide supplemental cash flow and other information related to operating leases (in thousands, except for lease term and discount rate):

	Three Months Ended March 31,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:	$	901	$	860
Right-of-use assets obtained in exchange for lease obligations:	$	—	$	—

	As of March 31,
	2024		2023
Weighted average remaining lease term (in years)	7.5		8.4
Weighted average discount rate	4.3	%	4.3	%

In addition to base rent, certain of the Company’s operating leases require variable payments. These variable lease costs include amounts relating to common area maintenance and are expensed when the obligation for those payments is incurred and are recognized as operating expenses in the condensed consolidated statements of operations. The following table summarizes the components of operating lease expense for the three months ended March 31, 2024 and 2023:

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	Three Months Ended March 31,
(in thousands)	2024	2023
Operating lease cost	796	781
Variable lease cost	381	335
Total lease costs	1,177	1,116

Future minimum lease commitments are as follows as of March 31, 2024 (in thousands):

Maturity Dates	Operating Leases
Remaining nine months ended December 31, 2024	$	2,585
2025	3,772
2026	3,869
2027	3,970
2028	4,103
Thereafter	11,298
Total lease payments	29,597
Less imputed interest	(4,663)
Present value of lease liabilities	$	24,934

Legal Proceedings

From time to time, the Company has been and may be involved in various legal proceedings arising in its ordinary course of business. In the opinion of management, resolution of any pending claims (either individually or in the aggregate) is not expected to have a material adverse impact on the condensed consolidated financial statements, cash flows or financial position and it is not possible to provide an estimated amount of any such loss. However, the outcome of disputes is inherently uncertain. Therefore, although management considers the likelihood of such an outcome to be remote, an unfavorable resolution of one or more matters could materially affect future results of operations or cash flows, or both, in a particular period.

9. Stockholders' Equity

Authorized and Outstanding Capital Stock

The total number of shares of the Company’s authorized capital stock is 1,100,000,000. The total amount of authorized capital stock consists of 1,000,000,000 shares of common stock and 100,000,000 shares of preferred stock. As of March 31, 2024, no shares of preferred stock are issued or outstanding.

Common Stock

Holders of OmniAb Common Stock are entitled to one vote for each share held on all matters submitted to a vote of stockholders, including the election of directors, and do not have cumulative voting rights. Subject to preferences that may be applicable to any then outstanding preferred stock, holders of OmniAb Common Stock are entitled to receive ratably those dividends, if any, as may be declared by the Company’s board of directors out of legally available funds. In the event of liquidation, dissolution or winding up, the holders of OmniAb Common Stock will be entitled to share ratably in the assets legally available for distribution to stockholders after the payment of or provision for all of the Company's debts and other liabilities, subject to the prior rights of any preferred stock then outstanding. Holders of OmniAb Common Stock have no preemptive or conversion rights or other subscription rights and there are no redemption or sinking fund provisions applicable to the OmniAb Common Stock. All outstanding shares of OmniAb Common Stock are duly authorized, validly issued, fully paid and nonassessable. The rights, preferences and privileges of holders of OmniAb Common Stock are subject to and may be adversely affected by the rights of the holders of shares of any series of preferred stock that the Company may designate and issue in the future.

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Preferred Stock

Under the terms of the Company’s certificate of incorporation, its board of directors has the authority, without further action by the Company's stockholders, to issue up to 100,000,000 shares of preferred stock in one or more series, to establish from time to time the number of shares to be included in each such series, to fix the dividend, voting and other rights, preferences and privileges of the shares of each wholly unissued series and any qualifications, limitations or restrictions thereon, and to increase or decrease the number of shares of any such series, but not below the number of shares of such series then outstanding.

The Company’s board of directors may authorize the issuance of preferred stock with voting or conversion rights that could adversely affect the voting power or other rights of the holders of OmniAb Common Stock. The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes, could, among other things, have the effect of delaying, deterring or preventing a change in the Company’s control and may adversely affect the market price of OmniAb Common Stock and the voting and other rights of the holders of OmniAb Common Stock. The Company has no current plans to issue any shares of preferred stock.

Earnout Shares

As of March 31, 2024, OmniAb Earnout Shares of 14,999,243 and Sponsor Earnout Shares of 1,293,299 are issued and outstanding. Earnout Shares vest based upon the achievement of certain volume-weighted average trading prices (“VWAP”) for shares of the Company for any 20 trading days over a consecutive 30 trading-day period during the five-year period following the Closing Date, with (i) 50% of such Earnout Shares vesting upon achievement of a VWAP of $12.50 per share of OmniAb Common Stock or upon the occurrence of a change of control transaction that will result in the holders of OmniAb Common Stock receiving a price per share in excess of $12.50, and (ii) the remaining 50% of the Earnout Shares vesting upon achievement of a VWAP of $15.00 per share of OmniAb Common Stock or upon the occurrence of a change of control transaction that will result in the holders of OmniAb Common Stock receiving a price per share in excess of $15.00. The Earnout Shares are not transferable until the vesting condition for the applicable tranche of Earnout Shares has been achieved. Prior to vesting, holders of Earnout Shares are entitled to exercise the voting rights carried by such shares and receive any dividends or other distributions in respect of such shares.

The Earnout Shares will be automatically forfeited for no consideration if the vesting condition for the applicable tranche of Earnout Shares has not been satisfied on or before November 1, 2027.

Warrants

As part of APAC’s initial public offering, 7,666,667 Public Warrants were sold. The Public Warrants entitle the holder thereof to purchase one share of common stock at a price of $11.50 per share, subject to adjustments. The Public Warrants are only exercisable for a whole number of shares of common stock. No fractional shares are to be issued upon exercise of the warrants. The Public Warrants will expire on November 1, 2027 at 5:00 p.m., New York City time, or earlier upon redemption or liquidation. The Public Warrants are listed on the Nasdaq Capital Market under the symbol “OABIW”.

Additionally, the Company can redeem the outstanding Public Warrants:

•in whole and not in part;

•at a price of $0.01 per warrant;

•upon not less than 30 days’ prior written notice of redemption to each warrant holder; and

•if, and only if, the closing price of the ordinary shares equals or exceeds $18.00 per share (as adjusted for share subdivisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within a 30-trading day period ending three trading days before the Company sends the notice of redemption to the warrant holders provided there was an effective registration statement covering the shares of common stock issuable upon exercise of the warrants.

If the Company calls the Public Warrants for redemption as previously described, the Company has the option to require all holders that wish to exercise the Public Warrants to do so on a cashless basis.

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Simultaneously with APAC’s initial public offering, APAC consummated a private placement of 8,233,333 Private Placement Warrants with APAC’s sponsor. Each Private Placement Warrant is exercisable for one share of common stock at a price of $11.50 per share, subject to adjustment. The Private Placement Warrants have terms and provisions that are identical to those of the Public Warrants except that the Private Placement Warrants were not transferable, assignable or salable until 30 days after the completion of the Business Combination. The Private Placement Warrants will be redeemable by the Company in all redemption scenarios and exercisable by the holders on the same basis as the Public Warrants.

Additionally, on the Closing Date, the Company issued 1,666,667 Forward Purchase Warrants and 1,445,489 Backstop Warrants pursuant to the A&R FPA. The Forward Purchase Warrants and Backstop Warrants have the same terms as the Private Placement Warrants.

The Company concluded the Public, Private Placement, Forward Purchase and Backstop Warrants meet the criteria to be classified as equity. Upon consummation of the Business Combination, the Public, Private Placement, Forward Purchase and Backstop Warrants were recorded in additional paid-in capital.

Equity Compensation Plans

2022 Incentive Award Plan

The Company’s board of directors and stockholders adopted the 2022 Incentive Award Plan, or the 2022 Plan, which became effective upon the Closing of the Business Combination. Under the 2022 Plan, the Company may grant cash and equity incentive awards to eligible employees, directors and consultants.

As of March 31, 2024, the aggregate number of shares of our common stock that may be issued under the 2022 Plan is 29,886,710 shares. In addition, the number of shares of our common stock available for issuance under the 2022 Plan will be annually increased on January 1 of each calendar year beginning in 2023 and ending in 2032 by an amount equal to the lesser of (i) a number equal to 5% of the fully-diluted shares on the final day of the immediately preceding calendar year or (ii) such smaller number of shares as is determined by the Company's board of directors.

The 2022 Plan provides for the grant of stock options, including incentive stock options and nonqualified stock options, stock appreciation rights, restricted stock, dividend equivalents, RSUs and other stock or cash-based awards.

OmniAb Prior Plans

In connection with the Business Combination, Legacy OmniAb adopted the OmniAb, Inc. 2022 Ligand Service Provider Assumed Award Plan and the OmniAb, Inc. 2022 OmniAb Service Provider Assumed Award Plan, collectively referred to as the OmniAb Prior Plans, which govern the OmniAb equity awards issued upon adjustment of outstanding Ligand equity awards in connection with the Distribution. All awards under the OmniAb Prior Plans that were outstanding as of the closing of the Business Combination continued to be governed by the terms, conditions and procedures set forth in the OmniAb Prior Plans and any applicable award agreements, as those terms may be equitably adjusted in connection with the Business Combination. The Company assumed the OmniAb Prior Plans in connection with the closing of the Business Combination, and each of the awards thereunder.

10. Share-Based Compensation

Share-Based Compensation Expense

The Company recognized share-based compensation expense by function as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Research and development	$	2,904	$	3,278
General and administrative	2,791		2,777
Total share-based compensation expense	$	5,695	$	6,055

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The Company recognized share-based compensation expense by award type as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Stock options	$	3,827	$	3,569
Restricted stock units	1,563		1,926
Employee share purchase plan	152		409
Performance restricted stock units	153		151
Total share-based compensation expense	$	5,695	$	6,055

Stock Options

Stock options granted under the 2022 Plan typically vest 1/8 on the six-month anniversary of the date of grant, and 1/48 each month thereafter for 42 months. All option awards generally expire 10 years from the date of grant.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options granted. The model assumptions include expected volatility, expected term, dividend yield, and the risk-free interest rate.

•Expected volatility: Due to the Company’s limited trading history for its common stock, the expected volatility assumption is based on volatilities of a peer group of similar companies whose share prices are publicly available. The peer group was developed based on companies in the biotechnology industry. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of its own stock price becomes available.

•Expected term: The expected term represents the period of time that options are expected to be outstanding. Because the Company has limited historical exercise behavior, it determines the expected life assumption using the simplified method which is an average of the contractual term of the option and its vesting period.

•Dividend yield: The Company bases the expected dividend yield assumption on the fact that it has never paid cash dividends and has no present intention to pay cash dividends and, therefore, used an expected dividend yield of zero.

•Risk-free interest rate: The risk-free interest rate is based upon U.S. Treasury securities with remaining terms similar to the expected term of the share-based awards.

The fair value of each option issued to employees was estimated on the grant date using the Black-Scholes option pricing model with the following weighted-average assumptions:

	Three Months Ended March 31,
	2024		2023
Risk-free interest rate	4.3	%	3.7	%
Expected volatility	54.1	%	49.9	%
Expected term (years)	6.0		6.2
Dividend yield	—	%	—	%

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The following table summarizes stock option activity awarded to OmniAb employees and directors under the Company’s equity award plans:

	Shares	Weighted-Average Exercise Price per Share		Weighted-Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)(1)
Outstanding at January 1, 2024	14,795,859	$	6.50
Granted	2,823,625	$	5.65
Exercised	(269,671)	$	3.72
Cancelled/Expired	(143,997)	$	8.20
Outstanding at March 31, 2024	17,205,816	$	6.39	8.5	$	15,346
Exercisable at March 31, 2024	5,483,912	$	8.43	7.6	$	4,003

_____________

(1)The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the estimated fair value of the common stock for in the money options at March 31, 2024.

As of March 31, 2024, unrecognized share-based compensation expense related to OmniAb options was $30.8 million, which is expected to be recognized over a remaining weighted-average period of approximately 1.46 years. As of March 31, 2024, unrecognized share-based compensation expense related to Ligand options was $1.6 million, which is expected to be recognized over a remaining weighted-average period of approximately 0.54 years.

The aggregate intrinsic value of OmniAb options exercised by OmniAb employees during the three months ended March 31, 2024 was $0.4 million. Cash received from OmniAb options exercised by OmniAb employees during the three months ended March 31, 2024 was $1.0 million.

There were no OmniAb options exercised by Ligand employees during the three months ended March 31, 2024.

Restricted Stock Units

Restricted stock units (“RSUs”) are awards of nontransferable shares of common stock subject to certain vesting conditions and other restrictions. RSUs generally vest over three years. The fair value of restricted stock is determined by the closing market price on the grant date.

The following table summarizes RSU activity during the three months ended March 31, 2024 under the Company’s equity awards plans:

	Shares	Weighted-Average Grant Date Fair Value
Unvested balance at January 1, 2024	1,878,381	$	5.61
Granted	752,064	$	5.64
Vested	(296,489)	$	10.42
Forfeited	(9,543)	$	5.53
Unvested balance at March 31, 2024	2,324,413	$	5.00

As of March 31, 2024, unrecognized stock-based compensation expense related to OmniAb RSUs was $9.4 million, which is expected to be recognized over a remaining weighted-average period of approximately 1.52 years. As of March 31, 2024, unrecognized stock-based compensation expense related to Ligand RSUs was $0.1 million, which is expected to be recognized over a remaining weighted-average period of approximately 0.47 years.

The aggregate intrinsic value of OmniAb RSUs vested for OmniAb employees during the three months ended March 31, 2024 was $1.7 million. The aggregate intrinsic value of OmniAb RSUs vested for Ligand employees during the three months ended March 31, 2024 was $0.7 million.

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Performance Restricted Stock Units

PRSUs are share awards that, upon vesting, will deliver to the holder shares of the Company’s common stock. PRSUs vest over a continued employment period and are based on the achievement of certain corporate performance or market goals.

The Company’s PRSUs contain a market condition dependent upon the Company’s relative and absolute total stockholder return over a three-year period, with a payout range of 0% to 200% of the target shares granted. Share-based compensation expense for these PRSUs is measured using the Monte-Carlo valuation model and is not adjusted for the achievement, or lack thereof, of the market conditions.

The following table summarizes the PRSU activity during the three months ended March 31, 2024, under the Company’s equity awards plans:

	Shares	Weighted-Average Grant Date Fair Value
Unvested balance at January 1, 2024	94,749	$	16.11
Granted	—	$	—
Vested	—	$	—
Forfeited	—	$	—
Unvested balance at March 31, 2024	94,749	$	16.11

As of March 31, 2024, unrecognized share-based compensation expense related to OmniAb PRSUs was $0.5 million, which is expected to be recognized over a remaining weighted-average period of approximately 0.75 years.

Employee Stock Purchase Plan

Under the Company’s 2022 Employee Stock Purchase Plan (the “ESPP”), eligible employees are entitled to purchase shares of common stock at a discount with accumulated payroll deductions. The ESPP provides for a series of overlapping 24-month offering periods comprising four six-month purchase periods. The initial offering period under the 2022 ESPP is longer than 24 months, commencing November 1, 2022 and ending on November 29, 2024. The purchase price for shares of common stock purchased under the ESPP is equal to 85% of the lesser of the fair market value of the Company’s common stock on (i) the first trading day of the applicable offering period or (ii) the last trading day of each six month purchase period in the applicable offering period.

As of March 31, 2024, the aggregate number of shares of our common stock that may be issued pursuant to rights granted under the ESPP equals 3,394,578 shares of our common stock. In addition, on the first day of each calendar year beginning on January 1, 2023 and ending on (and including) January 1, 2032, the number of shares available for issuance under the ESPP will be increased by a number of shares equal to the lesser of (i) 1% of the fully diluted shares outstanding on the final day of the immediately preceding calendar year, and (ii) such smaller number of shares as determined by our board of directors.

As of March 31, 2024, there was $0.3 million of unrecognized share-based compensation expense associated with the ESPP, which is expected to be recognized over a remaining weighted-average period of 0.66 years.

During the three months ended March 31, 2024, there were no shares issued pursuant to the ESPP.

11. Income Taxes

The Company’s effective tax rate may vary from the U.S. federal statutory tax rate due to the change in the mix of earnings in various state jurisdictions with different statutory rates, benefits related to tax credits, and the tax impact of non-deductible expenses, stock award activities and other permanent differences between income before income taxes and taxable income. The Company’s effective tax rate for the three months ended March 31, 2024 was 12.1%. The variance from the U.S. federal statutory tax rate of 21.0% for the three months ended March 31, 2024 was primarily due to the benefit related to tax credits, the tax impact of stock award activities, and the valuation allowance established on federal and state attributes. The Company’s effective tax rate for the three months ended March 31, 2023 was 14.4%. The variance from the U.S. federal statutory tax rate of 21.0% for the three months ended March 31, 2023 was primarily due to the benefit related to tax credits, the tax impact of stock award activities, and the valuation allowance established on state attributes.

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The Company considered the realizability of the deferred tax assets and recorded a valuation allowance as necessary for the amount of deferred tax assets which are not more likely than not to be realized as of March 31, 2024.

12. Net Loss Per Share

Loss Per Share

Basic loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted loss per share is computed based on the sum of the weighted average number of common shares and dilutive common shares outstanding during the period. As described in Note 2 – Summary of Significant Accounting Policies, Earnout Shares issued in connection with the Business Combination, as further described in Note 3 – Business Combination, are subject to vesting based on the VWAP of common shares during the earnout period. The Earnout Shares are excluded from the calculation of basic and diluted weighted-average number of common shares outstanding until vested.

The following table outlines the basic and diluted net loss per share for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
(in thousands, except per share data)	2024		2023
Net loss	$	(18,961)	$	(6,100)
Weighted-average shares outstanding, basic and diluted	100,755		99,158
Net loss per share, basic and diluted	$	(0.19)	$	(0.06)

The following table outlines dilutive common share equivalents outstanding, which are excluded in the above diluted net loss per share calculation, as the effect of their inclusion would be anti-dilutive, or the share equivalents were contingently issuable as of each period presented:

	March 31,
	2024	2023
Options to purchase common stock issued and outstanding(1)	22,437,492	18,735,538
Earnout shares	16,292,542	16,292,542
Avista private placement warrants	8,233,333	8,233,333
Avista public warrants	7,666,667	7,666,667
Restricted stock units issued and outstanding(1)	2,421,767	1,710,065
Forward purchase warrants	1,666,667	1,666,667
Backstop warrants	1,445,489	1,445,489
Shares expected to be purchased under employee stock purchase plan	946,670	1,918,512
Total anti-dilutive shares	61,110,627	57,668,813

_____________

(1)Outstanding stock options and restricted stock units include awards outstanding to employees of Ligand.

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Item 2. Management's Discussion and Analysis of Financial

Condition and Results of Operations

The following discussion and analysis and the unaudited interim financial statements included in this Quarterly Report on Form 10-Q should be read in conjunction with the financial statements and notes thereto for the year ended December 31, 2023 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in the Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Annual Report”).

Forward-Looking Statements

This Quarterly Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of historical facts contained in this Quarterly Report, including statements regarding our future results of operations and financial position, our expected cash runway, our business strategy, the effects of the separation or the distribution, our expectations regarding the application of, and the rate and degree of market acceptance of our OmniAb® technology platform and other technologies, our expectations regarding the addressable markets for our technologies, including the growth rate of the markets in which we operate, the potential for and timing of receipt of milestones and royalties under our license agreements with partners, our research and development plans, the potential for our partnered or internal programs to progress in their development, the anticipated timing of the initiation and completion of preclinical studies and clinical trials by our partners or us, the timing and likelihood of regulatory filings and product approvals by our partners or us, the potential for and timing and geographic markets of any commercial product launches by our partners and potential for commercial success, our ability to enter into any new, or maintain existing, strategic partnerships or collaborative relationships, our ability to obtain and maintain intellectual property protection for our platform, products and technologies, the timing and likelihood of success, plans and objectives of management for future operations, and future results of anticipated business development and product development efforts, are forward-looking statements. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements.

These forward-looking statements speak only as of the date of this Quarterly Report and are subject to a number of risks, uncertainties and assumptions, including, without limitation, the risk factors described in Part II, Item 1A, “Risk Factors” of this Quarterly Report. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

Overview

OmniAb, Inc. is a biotechnology company that licenses cutting edge discovery research technology to the pharmaceutical and biotech industry to enable the discovery of next-generation therapeutics. Our technology platform creates and screens diverse antibody repertoires and is designed to quickly identify optimal antibodies and other target-binding proteins for our partners’ drug development efforts. At the heart of the OmniAb platform is something we call Biological Intelligence™, which powers the immune systems of our proprietary, engineered transgenic animals to create optimized antibody candidates for human therapeutics. We primarily derive revenue from license fees for technology access, milestones from partnered programs and service revenue from research programs.

We believe the OmniAb animals comprise the most diverse host systems available in the industry. Our suite of technologies and methods, including computational antigen design and immunization methods, paired with high-throughput single B cell phenotypic screening and mining of next-generation sequencing datasets with custom algorithms, are used to identify fully-human antibodies with exceptional performance and developability characteristics. We provide our partners both integrated end-to-end capabilities and highly customizable offerings, which address critical industry challenges and provide optimized discovery solutions.

As of March 31, 2024, we had 80 active partners with 327 active programs using the OmniAb technology platform, including 27 OmniAb-derived antibodies in clinical development by our partners, one under regulatory review, and three approved products of our partners.

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Our proprietary technologies are joined with and leverage OmniDeep™, which is a suite of in silico, artificial intelligence (“AI”) and machine learning tools for therapeutic discovery and optimization that are woven throughout our various technologies and capabilities. Additionally, an established core competency focused on ion channels and transporters further differentiates OmniAb’s technology and creates opportunities in many important and emerging target classes. OmniAb technologies are designed to be leveraged for the discovery of a variety of next-generation antibody-based therapeutic modalities, including bi- and multi-specific biologics, antibody-drug conjugates, CAR-T therapies, targeted radiotherapeutics, and many others.

The OmniAb suite of technologies spans from Biological Intelligence-powered repertoire generation to cutting-edge antibody discovery and optimization offering an increasingly efficient and customizable end-to-end solution for the growing discovery needs of the global pharmaceutical industry.

We partner with pharmaceutical and biotechnology companies and leading academic institutions that vary in size, clinical stage, geography and therapeutic focus. Our partners gain access to wide repertoires of antibodies and state-of-the-art screening technologies designed to enable efficient discovery of next-generation novel therapeutics and deliver high-quality therapeutic antibody candidates for a wide range of diseases. Our partners can select a biological target to treat a disease and define the antibody properties needed for therapeutic development or use certain of our technologies directly in their own laboratories.

Our license agreements with pharmaceutical and biotechnology partners generally include: (i) upfront or, in some instances, annual payments for technology access and payments for performance of research services; (ii) downstream payments in the form of preclinical, intellectual property, clinical, regulatory, and commercial milestones; and (iii) royalties on net sales of our partners’ products, if any. License agreements with academic institutions are typically structured with revenue sharing. We succeed when our partners are successful, and our agreements are structured to align economic and scientific interests. Our license agreements typically include reporting requirements, which provide us updates from our partners on the status of their programs. In addition, we track our active partnered programs by reviewing our partners’ public announcements and maintaining close communications with our partners to the extent possible. In some instances, a partner may not publicly announce milestones, in which case, we would be generally dependent on our partner to track, report and disclose to us milestones at the time of achievement. Our license agreements are typically terminable by our partners without penalty with specified notice. However, all milestone payments and royalties survive termination and continue with respect to any OmniAb-derived antibodies. The royalty term is generally the longer of 10 years from the first commercial sale or through the last expiration in any jurisdiction of the patents covering such OmniAb-derived antibody. Importantly, our royalty term is typically linked to the composition-of-matter patents that our partners file related to the antibody discovered using our technology, which both lengthens and diversifies the royalty streams we receive. Our typical royalty rates for antibody discovery contracts are currently in the low- to mid-single digits and can vary depending on other economic terms in the agreement. Although our license agreements with pharmaceutical and biotechnology partners typically include technology access fees, milestone payments and royalties, each agreement is negotiated separately and as a result, the financial terms and contractual provisions vary from agreement to agreement. By providing a full suite of antibody discovery technologies with streamlined economics, we believe we offer an attractive option to industry stakeholders.

We believe the long-term value of our business will be driven by royalties given that such payments are based on global sales of potential future partner programs, which generally provide for larger and recurring payments as compared to technology access, research and milestone payments. We believe our revenue will be materially driven by milestones in the shorter term, and by royalties in the longer term, from our partnered programs. However, there is significant uncertainty in timing and likelihood of reaching marketing authorization in drug discovery and development, and we cannot be certain when, if at all, royalty payments will be a material portion of our revenue. Furthermore, we do not control the progression, clinical development, regulatory strategy or eventual commercialization of programs discovered using our platform, and as a result, we are dependent on our partners’ efforts and decisions with respect to such programs.

Key Business Metrics

We regularly review the following key business metrics to evaluate our business, measure our performance, identify trends affecting our business, formulate financial projections and make strategic decisions. We believe that the following metrics are important to understanding our current business. These metrics may change or may be substituted for additional or different metrics as our business continues to grow.

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Metric	March 31, 2024	December 31, 2023	% Change
Active partners	80	77	4%
Active programs	327	325	1%
Active clinical programs and approved products	31	32	(3)%
Approved products	3	3	—%

Active partners represents the number of partners that have rights to an active program or have executed a license agreement in advance of initiating an active program. We view this metric as an indication of the competitiveness of our platform and our current level of market penetration. The metric also relates to our opportunities to secure additional active programs.

Active programs represents a program for which research work has commenced or where an antigen is introduced into our animals and remains so as long as the program is actively being developed or commercialized. This number includes active clinical programs and approved products separately disclosed in the table above. We view this metric as an indication of the usage of our technology and the potential for mid- and long-term milestone and royalty payments.

Active clinical programs and approved products represents the number of unique programs for which an Investigational New Drug Application or equivalent under other regulatory regimes has been filed based on an OmniAb-derived antibody and which are in clinical development by our partners. We continue to count programs as active as long as they are actively being developed, under regulatory review or commercialized. Where the date of such application is not known to us, we use the official start date from clinical trial registries for the purpose of calculating this metric. This number includes approved products separately disclosed in the table above. We view this metric as an indication of our near- and mid-term potential revenue from milestone fees and potential royalty payments in the long term.

Approved products represents an OmniAb-derived antibody for which our partner has received marketing approval. We view this metric as an indication of our near- and mid-term potential revenue from royalty payments.

Results of Operations

Comparison of the Three Months Ended March 31, 2024 and 2023

Revenue

	Three Months Ended March 31,
(Dollars in thousands)	2024		2023		Change		% Change
License and milestone revenue	$	716	$	12,646	$	(11,930)	(94)	%
Service revenue	2,766		3,958		(1,192)		(30)	%
Royalty revenue	319		315		4		1	%
Total revenue	$	3,801	$	16,919	$	(13,118)	(78)	%

•License and milestone revenue fluctuates primarily due to the timing of milestone recognition related to our partners’ programs in clinical development. The decline in license and milestone revenue was primarily driven by the recognition in the prior year period of a $10 million milestone related to the first commercial sale of teclistimab in the E.U.

•Service revenue declined as a result of the completion of work on certain ion channel programs.

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Operating Expenses

	Three Months Ended March 31,
(Dollars in thousands)	2024		2023		Change		% Change
Research and development	$	14,551	$	13,759	$	792	6	%
General and administrative	8,337		8,195		142		2	%
Amortization of intangibles	3,412		3,369		43		1	%
Other operating expense, net	54		49		5		10	%
Total operating expenses	$	26,354	$	25,372	$	982	4	%

•Research and development expenses increased primarily due to personnel-related costs.

Other Income

Other income during the three months ended March 31, 2024 and 2023 related to interest earned on short-term investments.

Income Tax Benefit

	Three Months Ended March 31,
(Dollars in thousands)	2024			2023			Change		% Change
Loss before income taxes	$	(21,578)		$	(7,129)		$	(14,449)	203	%
Income tax benefit	2,617			1,029			1,588		154	%
Net loss	$	(18,961)		$	(6,100)		$	(12,861)	211	%
Effective Tax Rate	(12.1)		%	(14.4)		%

Our effective tax rate is affected by recurring items, such as the U.S. federal and state statutory tax rates and the relative amounts of income we earn in those jurisdictions. The tax rate is also affected by discrete items that may occur in any given year but are not consistent from year to year.

Our effective tax rate for the three months ended March 31, 2024 differed from the federal statutory tax rate of 21.0% due to share-based compensation expense that is not tax deductible and an increase to our valuation allowance recorded against deferred tax assets, partially offset by the tax benefit from research and development tax credits. Our effective tax rate for the three months ended March 31, 2023 differed from the federal statutory tax rate of 21.0% due to share-based compensation expense that is not tax deductible, an increase to our valuation allowance recorded against deferred tax assets, and repricing of state tax deferrals, partially offset by the tax benefit of research and development tax credits.

Liquidity and Capital Resources

Prior to our spin-off from Ligand Pharmaceuticals Incorporated (“Ligand”) in November 2022, funding from Ligand was our primary source of liquidity. We were capitalized with $95.8 million in net cash in connection with the closing of the business combination pursuant to which OmniAb Operations, Inc., a then wholly-owned subsidiary of Ligand (“OmniAb Operations”), was spun off and merged with Orwell Merger Sub Inc., our then wholly-owned subsidiary, with OmniAb Operations surviving as our wholly-owned subsidiary.

As of March 31, 2024, our cash, cash equivalents and short-term investments were $69.0 million. We believe our cash, cash equivalents and short-term investments and the cash we expect to generate from operations will provide us the flexibility we need to meet operating, investing, and financing needs and support our operations through at least the next 12 months.

If our anticipated cash flows from operations and current cash are insufficient to satisfy our liquidity requirements because of increased expenditures or lower demand for our technology platform, or the realization of other risks, we may be required to raise additional capital through issuances of public or private equity or debt financing or other capital sources. Such additional financing may not be available on terms acceptable to us or at all. In any event, we may consider raising additional capital in the future to expand our business, to pursue strategic investments or acquisitions, to take advantage of favorable market conditions or financing opportunities or for other reasons. Our future capital requirements will depend on many factors, including, but not limited to:

•our ability to achieve revenue growth;

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•the costs of expanding our operations, including our business development and marketing efforts;

•our rate of progress in selling access to our platform and marketing activities associated therewith;

•our rate of progress in, and cost of research and development activities associated with, our platform technologies and our internal developed programs to the extent we pursue any such programs;

•the effect of competing technological and market developments;

•the impact of pandemic or epidemic diseases on global social, political and economic conditions;

•our efforts to enhance operational systems and hire additional personnel to satisfy our obligations as a public company;

•the costs involved in preparing, filing, prosecuting, maintaining, defending and enforcing patents and other intellectual property and proprietary rights; and

•the costs associated with any technologies that we may in-license or acquire.

We anticipate that our principal uses of cash in the future will be primarily to fund our operations, working capital needs, capital expenditures and other general corporate purposes.

Additionally, we may receive up to $218.6 million from the exercise of our warrants, assuming the exercise in full of all the warrants for cash, but not from the sale of the shares of our common stock issuable upon such exercise. As of the date of this report, our warrants are “out of the money,” which means that the trading price of the shares of our common stock underlying our warrants is below the $11.50 exercise price of the warrants. For so long as the warrants remain out of the money, we do not expect warrant holders to exercise their warrants. Therefore, any cash proceeds that we may receive in relation to the exercise of such securities will be dependent on the trading price of our common stock.

Cash Flow Summary

	Three Months Ended March 31,
(Dollars in thousands)	2024		2023		Change
Net cash provided by (used in):
Operating activities	$	(17,032)	$	27,688	$	(44,720)
Investing activities	19,937		(37,172)		57,109
Financing activities	$	(203)	$	(1,045)	$	842

Cash from Operating Activities:

During the three months ended March 31, 2024, cash used in operating activities of $17.0 million primarily reflected our net loss of $19.0 million, changes in our operating assets and liabilities in the amount of $5.5 million, partially offset by net non-cash charges of $7.4 million which primarily included $5.7 million in share-based compensation and $4.9 million in depreciation and amortization.

During the three months ended March 31, 2023, cash provided by operating activities of $27.7 million primarily reflected changes in our operating assets and liabilities in the amount of $25.0 million, net non-cash charges of $8.7 million which primarily included $6.1 million in share-based compensation, and $4.9 million in depreciation and amortization, partially offset by our net loss of $6.1 million.

Cash from Investing Activities:

During the three months ended March 31, 2024, cash provided by investing activities of $19.9 million primarily consisted of $26.0 million of proceeds from the maturity of short-term investments and $0.7 million from the sale of short-term investments, partially offset by $5.4 million of cash used to purchase short-term investments, $0.9 million of cash used to purchase property and equipment, and $0.4 million of payments to contingent liabilities holders.

During the three months ended March 31, 2023, cash used in investing activities of $37.2 million primarily consisted of $39.1 million of cash used to purchase short-term investments and $2.1 million of payments to contingent liabilities holders, partially offset by $4.0 million of proceeds from the maturity of short-term investments.

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Cash from Financing Activities:

During the three months ended March 31, 2024, cash used in financing activities was $0.2 million which primarily consisted of $0.9 million of taxes paid related to the net share settlement of equity awards and $0.3 million of transaction costs, partially offset by $1.0 million of proceeds from the issuance of common stock from stock plans.

During the three months ended March 31, 2023, cash used in financing activities was $1.0 million which primarily consisted of $0.8 million taxes paid related to the net share settlement of equity awards and $0.5 million of transaction costs.

Critical Accounting Policies and Estimates

There have been no material changes to our critical accounting policies and estimates during the three months ended March 31, 2024, as compared to the critical accounting policies and estimates disclosed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in the 2023 Annual Report.

Recent Accounting Pronouncements

For the summary of recent accounting pronouncements, see Note 2 – Summary of Significant Accounting Policies to our financial statements included in this Quarterly Report.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

As of March 31, 2024, there were no material changes to our market risks from the discussion provided in Item 7A of our 2023 Annual Report.

Item 4. Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our periodic and current reports that we file with the SEC is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable and not absolute assurance of achieving the desired control objectives. In reaching a reasonable level of assurance, management was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. In addition, the design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of March 31, 2024, the end of the period covered by this Quarterly Report. Based upon such evaluation, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of such date.

Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

33

Part II – Other Information

Item 1. Legal Proceedings

For information that updates the disclosures set forth under Part I, Item 3, “Legal Proceedings” in our 2023 Annual Report, refer to Note 8 – Commitments and Contingencies to the condensed consolidated financial statements contained in Part I, Item 1, of this report.

From time to time, we may be subject to legal proceedings. We are not currently a party to or aware of any proceedings that we believe will have, individually or in the aggregate, a material adverse effect on our business, financial condition or results of operations. However, regardless of outcome, litigation can have an adverse impact on our business because of defense and settlement costs, diversion of management resources and other factors, and there can be no assurances that favorable outcomes will be obtained.

Item 1A. Risk Factors

We do not believe that there have been any material changes to the risk factors disclosed in Part I, Item 1A of our 2023 Annual Report. The risk factors described in our 2023 Annual Report are not the only risks we face. Factors we currently do not know, factors that we currently consider immaterial or factors that are not specific to us, such as general economic conditions, may also materially adversely affect our business or our consolidated operating results, financial condition or cash flows.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

Rule 10b5-1 Trading Arrangements

From time to time, our officers (as defined in Rule 16a-1(f) of the Exchange Act) and directors may enter into Rule 10b5-1 or non-Rule 10b5-1 trading arrangements (as each such term is defined in Item 408 of Regulation S-K). During the three months ended March 31, 2024, none of our officers or directors adopted, modified, or terminated any such trading arrangements.

34

Item 6. Exhibits

		Incorporated by Reference
Exhibit Number	Description of Exhibit	Form	File Number	Date of Filing	Exhibit Number	Filed Herewith
2.1+	Agreement and Plan of Merger, dated March 23, 2022, by and among Avista Public Acquisition Corp. II, Orwell Merger Sub Inc., Ligand Pharmaceuticals Incorporated and OmniAb, Inc.	S-4	333-264525	September 27, 2022	2.1
2.2+	Separation and Distribution Agreement, dated March 23, 2022, by and among Avista Public Acquisition Corp. II, Ligand Pharmaceuticals Incorporated and OmniAb, Inc.	S-4	333-264525	September 27, 2022	2.2
3.1	Certificate of Incorporation of the Registrant	10-K	001-40720	March 30, 2023	3.1
3.2	Bylaws of the Registrant	8-K	001-40720	November 7, 2022	3.2
4.1	Warrant Agreement, dated August 9, 2021, between Avista Public Acquisition Corp. II and Continental Stock Transfer & Trust Company, as warrant agent	8-K	001-40720	August 12, 2021	4.1
4.2	Assignment, Assumption and Amendment Agreement, dated November 1, 2022, by and among OmniAb, Inc., Continental Stock Transfer & Trust Company and Computershare Trust Company, N.A.	8-K	001-40720	November 7, 2022	4.2
4.3	Specimen Warrant Certificate	S-1/A	333-257177	July 28, 2021	4.3
4.4	Specimen Common Stock Certificate of OmniAb, Inc.	S-4	333-264525	September 27, 2022	4.5
31.1	Certification of Chief Executive Officer, as required by Rule 13a-14(a) or Rule 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					X
31.2	Certification of Chief Financial Officer, as required by Rule 13a-14(a) or Rule 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					X
32.1*	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002					X
32.2*	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002					X
101.INS	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document					X
101.SCH	Inline XBRL Taxonomy Extension Schema Document					X
101.CAL	Inline XBRL Taxonomy Calculation Linkbase Document					X
101.DEF	Inline XBRL Taxonomy Definition Linkbase Document					X
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document					X
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document					X
104	Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)					X

_____________

+    Certain schedules and annexes have been omitted in accordance with Item 601(b)(2) of Regulation S-K. A copy of any omitted schedule and/or annex will be furnished as a supplement to the SEC upon request.

*    This certification is deemed not filed for purposes of Section 18 of the Exchange Act or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act or the Exchange Act.

35

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date:	May 9, 2024	By:	/s/ Kurt Gustafson
			Kurt Gustafson
			Executive Vice President, Finance and Chief Financial Officer
			(Principal Financial and Accounting Officer)

36

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Matthew W. Foehr, certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of OmniAb, Inc.;

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 registrant as of, and for, the periods presented in this report;

4.    The registrant's other certifying officer(s) 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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

Date: May 9, 2024                    By:     /s/ Matthew W. Foehr            

                            Name:    Matthew W. Foehr

                            Title:    President and Chief Executive Officer

                                    (principal executive officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Kurt A. Gustafson, certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of OmniAb, Inc.;

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 registrant as of, and for, the periods presented in this report;

4.    The registrant's other certifying officer(s) 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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

Date: May 9, 2024                    By:     /s/ Kurt A. Gustafson            

                            Name:    Kurt A. Gustafson

                            Title:    Executive Vice President, Finance and

                                Chief Financial Officer

                                    (principal financial officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of OmniAb, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 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: May 9, 2024                    By:     /s/ Matthew W. Foehr            

                            Name:    Matthew W. Foehr

                            Title:    President and Chief Executive Officer

                                    (principal executive officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of OmniAb, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 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: May 9, 2024                    By:     /s/ Kurt A. Gustafson            

                            Name:    Kurt A. Gustafson

                            Title:    Executive Vice President, Finance and

                                Chief Financial Officer

                                    (principal financial officer)

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	May 02, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-40720
Entity Registrant Name	OMNIAB, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	98-1584818
Entity Address, Address Line One	5980 Horton Street, Suite 600
Entity Address, City or Town	Emeryville
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94608
City Area Code	(510)
Local Phone Number	250-7800
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		117,615,460
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001846253
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common stock, $0.0001 par value per share
Trading Symbol	OABI
Security Exchange Name	NASDAQ
Forward purchase warrants
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase common stock
Trading Symbol	OABIW

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 19,060	$ 16,358
Short-term investments	49,947	70,625
Accounts receivable, net	4,045	3,844
Prepaid expenses and other current assets	3,665	4,074
Total current assets	76,717	94,901
Intangible assets, net	152,055	155,467
Goodwill	83,979	83,979
Property and equipment, net	17,957	18,249
Operating lease right-of-use assets	19,362	19,884
Restricted cash	560	560
Other long-term assets	1,926	2,185
Total assets	352,556	375,225
Current liabilities:
Accounts payable	3,556	4,411
Accrued expenses and other current liabilities	4,027	7,068
Current contingent liabilities	891	1,303
Current deferred revenue	5,530	6,848
Current operating lease liabilities	3,516	3,486
Total current liabilities	17,520	23,116
Long-term contingent liabilities	3,178	3,203
Deferred income taxes, net	8,737	11,354
Long-term operating lease liabilities	21,418	22,075
Long-term deferred revenue	279	862
Other long-term liabilities	31	30
Total liabilities	51,163	60,640
Stockholders' equity:
Preferred stock, $0.0001 par value; 100,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued and outstanding at March 31, 2024 and December 31, 2023	0	0
Common stock, $0.0001 par value; 1,000,000,000 shares authorized at March 31, 2024 and December 31, 2023; 117,388,789 and 116,859,468 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	12	12
Additional paid-in capital	359,726	353,890
Accumulated other comprehensive (loss) income	(17)	50
Accumulated deficit	(58,328)	(39,367)
Total stockholders’ equity	301,393	314,585
Total liabilities and stockholders’ equity	$ 352,556	$ 375,225

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value, (dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common shares, par value, (dollars per share)	$ 0.0001	$ 0.0001
Common shares, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common shares, shares issued (in shares)	117,388,789	116,859,468
Common shares, shares outstanding (in shares)	117,388,789	116,859,468

XML

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues:
Total revenues	$ 3,801	$ 16,919
Operating expenses:
Research and development	14,551	13,759
General and administrative	8,337	8,195
Amortization of intangibles	3,412	3,369
Other operating expense, net	54	49
Total operating expenses	26,354	25,372
Loss from operations	(22,553)	(8,453)
Other income:
Interest income	975	1,324
Total other income, net	975	1,324
Loss before income taxes	(21,578)	(7,129)
Income tax benefit	2,617	1,029
Net loss	$ (18,961)	$ (6,100)
Weighted-average shares outstanding, basic (in shares)	100,755	99,158
Weighted-average shares outstanding, diluted (in shares)	100,755	99,158
Net loss per share, basic (dollars per share)	$ (0.19)	$ (0.06)
Net loss per share, diluted (dollars per share)	$ (0.19)	$ (0.06)
License and milestone revenue
Revenues:
Total revenues	$ 716	$ 12,646
Service revenue
Revenues:
Total revenues	2,766	3,958
Royalty revenue
Revenues:
Total revenues	$ 319	$ 315

XML

Condensed Consolidated Statements Of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (18,961)	$ (6,100)
Unrealized net loss on available-for-sale securities	(67)	(2)
Comprehensive loss	$ (19,028)	$ (6,102)

XML

Condensed Consolidated Statements of Stockholder's Equity - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings (Accumulated deficit)
Beginning balance at Dec. 31, 2022	$ 341,373	$ 12	$ 330,100	$ 9	$ 11,252
Beginning balance, in shares at Dec. 31, 2022		115,218,229
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,100)				(6,100)
Share-based compensation	6,055		6,055
Issuance of common stock under employee stock compensation plans, net (in shares)		366,291
Issuance of common stock under employee stock compensation plans, net of tax	(524)		(524)
Unrealized net loss on available-for-sale securities	(2)			(2)
Ending balance, in shares at Mar. 31, 2023		115,584,520
Ending balance at Mar. 31, 2023	340,802	$ 12	335,631	7	5,152
Beginning balance at Dec. 31, 2023	314,585	$ 12	353,890	50	(39,367)
Beginning balance, in shares at Dec. 31, 2023		116,859,468
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(18,961)				(18,961)
Share-based compensation	5,695		5,695
Issuance of common stock under employee stock compensation plans, net (in shares)		529,321
Issuance of common stock under employee stock compensation plans, net of tax	141		141
Unrealized net loss on available-for-sale securities	(67)			(67)
Ending balance, in shares at Mar. 31, 2024		117,388,789
Ending balance at Mar. 31, 2024	$ 301,393	$ 12	$ 359,726	$ (17)	$ (58,328)

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities:
Net loss	$ (18,961)	$ (6,100)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	4,949	4,859
Share-based compensation	5,695	6,055
Amortization of discounts on short-term investments, net	(622)	(933)
Deferred income taxes, net	(2,617)	(941)
Change in estimated fair value of contingent liabilities	38	(273)
Other operating activities	(11)	(28)
Changes in operating assets and liabilities, net:
Accounts receivable, net	132	28,822
Prepaid expenses and other current assets	409	789
Other long-term assets	259	106
Accounts payable, accrued expenses, and other current liabilities	(3,424)	(1,743)
Operating lease liabilities	(627)	62
Deferred revenue	(2,252)	(2,987)
Net cash provided by (used in) operating activities	(17,032)	27,688
Investing activities:
Purchases of short-term investments	(5,415)	(39,063)
Proceeds from the maturity of short-term investments	26,000	4,000
Purchases of property and equipment	(926)	(234)
Payments to contingent liabilities holders	(400)	(2,080)
Proceeds from sale of short-term investments	678	205
Net cash provided by (used in) investing activities	19,937	(37,172)
Financing activities:
Payments to contingent liabilities holders	(75)	0
Proceeds from issuance of common stock from stock plans	1,003	186
Taxes paid related to net share settlement of equity awards	(862)	(759)
Payment of transaction costs	(269)	(472)
Net cash used in financing activities	(203)	(1,045)
Net change in cash, cash equivalents and restricted cash	2,702	(10,529)
Cash, cash equivalents and restricted cash at beginning of period	16,918	33,839
Cash, cash equivalents and restricted cash at end of period	19,620	23,310
Supplemental cash flow information:
Deferred revenue recorded in accounts receivable	351	358
Supplemental non-cash investing and financing activities:
Purchase of fixed assets recorded in accounts payable	464	102
Intangible additions recorded in contingent liabilities	$ 0	$ 396

XML

Organization and Basis of Presentation

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Basis of Presentation

1. Organization and Basis of Presentation

Description of Business

OmniAb, Inc. (“OmniAb” or the “Company”, formerly known as Avista Public Acquisition Corp. II (“APAC”)) is a biotechnology company that licenses cutting edge discovery research technology to the pharmaceutical and biotech industry to enable the discovery of next-generation therapeutics. The Company’s technology platform creates and screens diverse antibody repertoires and is designed to quickly identify optimal antibodies and other target-binding proteins for its partners’ drug development efforts. At the heart of the OmniAb platform is something the Company calls Biological Intelligence™, which powers the immune systems of its proprietary, engineered transgenic animals to create optimized antibody candidates for human therapeutics. The Company primarily derives revenue from license fees for technology access, milestones from partnered programs and service revenue from research programs.

Business Combination

On November 1, 2022 (the “Closing Date”), the Company, Ligand Pharmaceuticals Incorporated, a Delaware corporation (“Ligand”), OmniAb Operations, Inc., a Delaware corporation and wholly-owned subsidiary of Ligand (“Legacy OmniAb”, formerly known as OmniAb, Inc.), and Orwell Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of APAC (“Merger Sub”), consummated the transactions contemplated by the Agreement and Plan of Merger (the “Merger Agreement”), dated as of March 23, 2022 (the “Business Combination”). See Note 3 – Business Combination for further details.

Basis of Presentation

The Company’s accompanying condensed consolidated financial statements have been prepared in accordance with U.S. GAAP. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as included in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”). The financial information for the three months ended March 31, 2024 and 2023, is unaudited but includes all normal and recurring adjustments unless indicated otherwise, which the Company considered necessary for fair presentation of its condensed consolidated statements of operations and comprehensive loss.

The accompanying consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and accounts within the Company have been eliminated.

Liquidity and Capital Resources

The Company expects to continue to incur losses as it invests in research and development activities to improve its technology and platform, market and sell its technologies to existing and new partners, add operational, financial and management information systems and personnel to support its operations and incur ongoing costs associated with operating as a public company. The Company’s ability to continue its operations is dependent upon its ability to generate cash flows from operations and potentially obtain additional capital in the future. The Company believes its existing cash, cash equivalents and short-term investments and the cash it expects to generate from operations will provide it the flexibility needed to meet operating, investing, and financing needs and support operations through at least the next 12 months.

The accompanying condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.

Emerging Growth Company

OmniAb qualifies as an emerging growth company as defined in Section 2(a) of the Securities Act of 1933, as amended, (“Securities Act”), as modified by the Jumpstart Our Business Startups Act of 2012 (“JOBS Act”).

Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. OmniAb has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, OmniAb, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of OmniAb’s financial statements with another public company, which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period, difficult because of the potential differences in accounting standards used.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and the accompanying notes. Actual results may differ from those estimates.

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents consist of cash and highly liquid investments with maturities of three months or less when purchased. Cash and cash equivalents generally consist of bank deposits, money market funds as well as U.S. government and agency securities. The following table provides a reconciliation of the components of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheets to the total of the amount presented in the condensed consolidated statements of cash flows:

(in thousands)	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	19,060	$	16,358
Restricted cash	560		560
Total cash, cash equivalents and restricted cash presented in the condensed consolidated statements of cash flows	$	19,620	$	16,918

Restricted cash relates to deposits for the Company’s property leases. The restriction will lapse when the related leases expire.

Short-term Investments

Short-term investments generally consist of commercial paper, corporate debt securities, asset-backed securities and government and agency securities. The Company classifies short-term investments as “available-for-sale” as the sale of such investments may be required prior to maturity to implement management strategies. Therefore, the Company has classified all investments with maturity dates beyond three months at the date of purchase as current assets in the accompanying condensed consolidated balance sheets based upon its ability and intent to use the investments to satisfy the liquidity needs of current operations. Any premium or discount arising at purchase is amortized and/or accreted to interest income as an adjustment to yield using the straight-line method over the life of the instrument. Investments are reported at their estimated fair value. Unrealized gains and losses are included in accumulated other comprehensive income (loss) as a component of stockholders’ equity until realized.

Accounts Receivable

Accounts receivable represents the amounts billed to the Company’s partners that are due unconditionally for revenue it has earned. The Company establishes an allowance for credit losses to present the net amount of accounts receivable expected to be collected. The allowance requires an estimation based upon historical loss experienced and adjusted for factors that are relevant to determining the expected collectability of accounts receivable. Some of these factors include delinquency trends, aging behavior of receivables, credit and liquidity quality indicators for industry groups, customer classes or individual customers and the current and expected future economic and market conditions.

Property and Equipment

Property and equipment are stated at cost, subject to review for impairment, and depreciated over the estimated useful lives of the assets using the straight-line method. Amortization of leasehold improvements is recorded over the shorter of the lease term or estimated useful life of the related asset. Maintenance and repairs are charged to operations as incurred. When assets are sold, or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in operating income or expense.

Asset	Estimated Useful Life
Lab and office equipment	4 - 7 years
Computer hardware	3 - 5 years
Leasehold improvements	Shorter of the useful life or remaining lease term
Computer software	Shorter of 3 years or useful life of asset

Acquisitions

The Company first determines whether a set of assets acquired constitutes a business and should be accounted for as a business combination. If the assets acquired are not a business, the Company accounts for the transaction as an asset acquisition. Business combinations are accounted for by using the acquisition method of accounting which requires the Company to use significant estimates and assumptions, including fair value estimates, as of the business combination date and to refine those estimates as necessary during the measurement period (defined as the period, not to exceed one year, in which the Company may adjust the provisional amounts recognized).

Under the acquisition method of accounting, the Company recognizes separately from goodwill the identifiable assets acquired, the liabilities assumed, including contingent consideration and all contractual contingencies, generally at the acquisition date fair value. Contingent purchase consideration to be settled in cash is remeasured to estimated fair value at each reporting period with the change in fair value recorded in the statement of operations. Costs that the Company incurs to complete the business combination such as investment banking, legal and other professional fees are not considered part of consideration and the Company charges them to general and administrative expense as they are incurred.

The Company measures goodwill as of the acquisition date as the excess of consideration transferred, which is also measured at fair value, over the net of the acquisition date amounts of the identifiable assets acquired and liabilities assumed.

Should the initial accounting for a business combination be incomplete by the end of a reporting period that falls within the measurement period, the Company reports provisional amounts in its financial statements. During the measurement period, the Company adjusts the provisional amounts recognized at the acquisition date to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date and the Company records those adjustments to its financial statements in the period of change, if any.

Under the acquisition method of accounting for business combinations, if the Company identifies changes to acquired deferred tax asset valuation allowances or liabilities related to uncertain tax positions during the measurement period and they relate to new information obtained about facts and circumstances that existed as of the acquisition date, those changes are considered a measurement period adjustment and the Company records the offset to goodwill. The Company records all other changes to deferred tax asset valuation allowances and liabilities related to uncertain tax positions in current period income tax expense.

Goodwill, Intangible Assets and Other Long-Lived Assets

Goodwill, which has an indefinite useful life, represents the excess of cost over fair value of net assets acquired. Goodwill is reviewed for impairment at least annually during the fourth quarter, or more frequently if an event occurs indicating the potential for impairment. During the goodwill impairment review, the Company assesses qualitative factors to determine whether it is more likely than not that the fair value of its reporting unit is less than the carrying amount, including goodwill. The Company operates in one reporting unit. The qualitative factors include, but are not limited to, macroeconomic conditions, industry and market considerations, cost factors, the overall financial performance, and events affecting the reporting unit. If, after assessing the totality of these qualitative factors, the Company determines that it is not more likely than not that the fair value of its reporting unit is less than the carrying amount, then no additional assessment is deemed necessary. Otherwise, the Company proceeds to perform the quantitative assessment. The Company will then evaluate goodwill for impairment by comparing the estimated fair value of the reporting unit to its carrying value, including the associated goodwill. To determine the fair value, the Company generally uses a combination of market approach based on OmniAb and comparable publicly traded companies in similar lines of businesses and the income approach based on estimated discounted future cash flows. The Company’s cash flow assumptions consider historical and forecasted revenue, operating costs and other relevant factors. The Company may also elect to bypass the qualitative assessment in a period and elect to proceed to perform the quantitative assessment for the goodwill impairment test. The Company performed the annual assessment for goodwill impairment during the fourth quarter of 2023. No impairment indicators were noted in any periods presented in the condensed consolidated financial statements under the qualitative assessment.

The Company’s identifiable intangible assets are composed of acquired core technologies, licensed technologies, contractual relationships, customer relationships and trade names. Identifiable intangible assets with finite lives are generally amortized on a straight-line basis over the assets’ respective estimated useful life. The Company regularly performs reviews to determine if any event has occurred that may indicate that intangible assets with finite useful lives and other long-lived assets are potentially impaired. If indicators of impairment exist, an impairment test is performed to assess the recoverability of the affected assets by determining whether the carrying amount of such assets exceeds the undiscounted expected future cash flows. If the affected assets are not recoverable, the Company estimates the fair value of the assets and records an impairment loss if the carrying value of the assets exceeds the fair value. Factors that may indicate potential impairment include market conditions, industry and economic trends, changes in regulations, clinical success, historical and forecasted financial results, significant changes in the ability of a particular asset to generate positive cash flows, and the pattern of utilization of a particular asset. The Company did not identify indicators of impairment for the finite-lived intangibles and other long-lived assets at March 31, 2024 and December 31, 2023.

Public, Private Placement, Forward Purchase and Backstop Common Stock Warrants

The Company assumed 7,666,667 warrants originally issued in APAC’s initial public offering (the “Public Warrants”) and 8,233,333 warrants issued in a private placement that closed concurrently with APAC’s initial public offering, (the “Private Placement Warrants”) in the Business Combination. Additionally, as further discussed in Note 3 – Business Combination, pursuant to the Amended and Restated Forward Purchase Agreement, dated as of March 23, 2022 (the “A&R FPA”), on the Closing Date, the Company issued 1,666,667 warrants in the Forward Purchase (the “Forward Purchase Warrants”) and 1,445,489 warrants in the Redemption Backstop (the “Backstop Warrants”). The Public, Private Placement, Forward Purchase and Backstop Warrants entitle the holder to purchase one share of the Company’s common stock at an exercise price of $11.50 per share.

The Public Warrants are publicly traded and are exercisable for cash unless certain conditions occur, such as the failure to have an effective registration statement related to the shares issuable upon exercise or redemption by the Company under certain conditions, at which time the warrants may be cashless exercised at the option of the Company. The Private Placement Warrants have terms and provisions that are identical to the Public Warrants except that the Private Placement Warrants were not transferable, assignable or salable until 30 days after the completion of the Business Combination. The Private Placement Warrants will be redeemable by the Company in all redemption scenarios and exercisable by the holders on the same basis as the Public Warrants. The Forward Purchase Warrants and the Backstop Warrants have the same terms as the Private Placement Warrants.

The Company evaluated the Public, Private Placement, Forward Purchase and Backstop Warrants under ASC 815-40, Derivatives and Hedging-Contracts in Entity’s Own Equity (“ASC 815-40”), and concluded they meet the criteria for equity classification as they are considered to be indexed to the Company’s own stock.

Revenue Recognition

The Company applies the following five-step model in accordance with ASC 606, Revenue from Contracts with Customers, in order to determine revenue: (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 distinct in the context of the contract; (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 when (or as) the Company satisfies each performance obligation.

The Company’s revenue is typically derived from license agreements with its partners and consists of: (i) upfront or annual payments for technology access (license revenue), (ii) payments for the performance of research services (service revenue), (iii) downstream payments in the form of preclinical, intellectual property, clinical, regulatory, and commercial milestones (milestone revenue) and (iv) royalties on net sales from partners’ product sales (royalty revenue).

License fees are generally recognized at a point in time once the Company grants partners access to intellectual property rights. The Company generally satisfies its obligation to grant intellectual property rights on the effective date of the contract.

The Company recognizes service revenue for contracted R&D services performed for partners over time. The Company measures its progress using an input method based on the effort it expends or costs it incurs toward the satisfaction of its performance obligation. The Company estimates the amount of effort it expends, including the time it will take to complete the activities, or the costs it may incur in a given period, relative to the estimated total effort or costs to satisfy the performance obligation. This results in a percentage that it multiplies by the transaction price to determine the amount of revenue recognized each period. This approach requires the Company to make estimates and use judgment. If estimates or judgments change over the course of the collaboration, they may affect the timing and amount of revenue recognized in current and future periods.

The Company includes contingent milestone based payments in the estimated transaction price when there is a basis to reasonably estimate the amount of the payment and it is probable of being achieved. These estimates are based on historical experience, anticipated results and its best judgment at the time. If the contingent milestone based payment is sales-based, we apply the royalty recognition constraint and record revenue when the underlying sale has taken place. Significant judgments must be made in determining the transaction price for licenses of intellectual property. Because of the risk that products in development with partners will not reach development based milestones or receive regulatory approval, the Company generally recognizes any contingent payments that would be due to it upon or after achievement of the development milestone or regulatory approval.

Deferred Revenue

Depending on the terms of the arrangement, the Company may also defer a portion of the consideration received if it needs to satisfy a future obligation.

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the condensed consolidated balance sheets. The Company generally receives payment at the point it satisfies its obligation or soon after. Any fees billed in advance of being earned are recorded as deferred revenue. During the three months ended March 31, 2024, the amount recognized as revenue that was previously deferred at December 31, 2023 was $2.2 million. During the three months ended March 31, 2023, the amount recognized as revenue that was previously deferred at December 31, 2022 was $3.1 million.

Disaggregation of Revenue

The disaggregated revenue categories are presented on the face of the condensed consolidated statements of operations.

Research and Development Expenses

Research and development expenses consist of material, equipment, facilities and labor costs of scientific staff who are working pursuant to collaborative agreements and other research and development projects. Also included in research and development expenses are third-party costs incurred for research programs including in-licensing costs, and costs incurred by other research and development service vendors. The Company expenses these costs as they are incurred. When the Company makes payments for research and development services prior to the services being rendered, it records those amounts as prepaid expenses on its condensed consolidated balance sheets and it expenses them as the services are provided.

Share-Based Compensation

The Company recognizes share-based compensation expense based on the estimated fair value on a straight-line basis over the requisite service periods of the awards, taking into consideration forfeitures as they occur. The fair value of RSUs is determined by the closing market price of the Company’s common stock on the date of grant. PRSUs generally represent the right to receive a certain number of shares of common stock based on the achievement of the Company’s corporate performance goals and continued employment during the vesting period. Share-based compensation expense for market-based PRSUs is measured using the Monte-Carlo valuation model and is not adjusted for the achievement, or lack thereof, of market conditions.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options granted and stock purchases under the ESPP. The model assumptions include expected volatility, term, dividends, and the risk-free interest rate.

The Company measures and recognizes compensation expense for shares to be issued under its employee stock purchase plan based on an estimated grant date fair value recognized on a straight-line basis over the offering period.

Income Taxes

The Company provides for income taxes under the asset and liability method prescribed by the ASC Topic 740, Income Taxes (“Topic 740”). Deferred tax assets and liabilities are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates in effect when the differences are expected to reverse. If necessary, deferred tax assets are reduced by a valuation allowance to reflect the uncertainty associated with their ultimate realization.

The Company accounts for uncertain tax positions recognized in the condensed consolidated financial statements in accordance with the provisions of Topic 740 by prescribing a more-likely-than-not threshold for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances. The Company evaluates uncertain tax positions on a quarterly basis and adjusts the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions. Any changes to these estimates, based on the actual results obtained and/or a change in assumptions, could affect its income tax provision in future periods. Interest and penalty charges, if any, related to unrecognized tax benefits would be classified as a provision for income tax in its condensed consolidated statements of operations.

Income (Loss) Per Share

Basic income (loss) per share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted income (loss) per share is computed based on the sum of the weighted average number of common shares and potentially dilutive common shares outstanding during the period.

Comprehensive Income (Loss)

Comprehensive income (loss) represents net income (loss) adjusted for the change during the periods presented in unrealized gains and losses on available-for-sale debt securities and reclassification adjustments for realized gains or losses included in net income (loss). The unrealized gains or losses are reported in the condensed consolidated statements of comprehensive income (loss).

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed below, the Company believes that the impact of recently issued standards are either not applicable to the Company or will not have a material impact on its consolidated financial statements upon adoption.

The following table provides a brief description of recently issued accounting standards:

Standard	Description	Effective Date	Effect on the Financial Statements or Other Significant Matters
ASU 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures	ASU 2023-07 updates reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses.	Effective for the Company for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024.	The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements and disclosures.
ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures	The amendments in this ASU address investor requests for more transparency about income tax information through improvements to tax disclosures primarily related to the rate reconciliation and income taxes paid information. The ASU also includes certain other amendments to improve the effectiveness of income tax disclosures.	Effective for the Company for annual periods beginning after December 15, 2024, with early adoption permitted.	The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements and disclosures.

Segment Information

Operating segments are components of an enterprise for which separate financial information is available and is evaluated regularly by the Company’s chief operating decision-maker in deciding how to allocate resources and assess performance. The Company manages its business as one operating segment.

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Business Combination

3 Months Ended

Mar. 31, 2024

Business Combination and Asset Acquisition [Abstract]

Business Combination

3. Business Combination

In connection with, and as contemplated by, the Merger Agreement, on November 1, 2022, in accordance with the terms of the Separation and Distribution Agreement, dated as of March 23, 2022, by and among APAC, Ligand and Legacy OmniAb (the “Separation Agreement”), Ligand transferred the Legacy OmniAb business to Legacy OmniAb and made a contribution to the capital of Legacy OmniAb of $1.8 million, after deducting certain transaction and other expenses reimbursable by Legacy OmniAb (the “Separation”). Following the Separation, Ligand distributed on a pro rata basis to its stockholders all of the shares of common stock, par value $0.001 per share, of Legacy OmniAb (“Legacy OmniAb Common Stock”) held by Ligand, such that each holder of shares of common stock, par value $0.001 per share, of Ligand (“Ligand Common Stock”) was entitled to receive one share of Legacy OmniAb Common Stock for each share of Ligand Common Stock held by such holder as of the record date for the distribution, October 26, 2022 (the “Distribution”). Following the Separation and Distribution, on November 1, 2022, Merger Sub merged with and into Legacy OmniAb, with Legacy OmniAb surviving as a direct, wholly owned subsidiary of OmniAb.

At the Closing Date, each outstanding share of Legacy OmniAb Common Stock was cancelled in exchange for 4.90007 shares of common stock of OmniAb, par value $0.0001 per share (“OmniAb Common Stock”) and 0.75842 shares of OmniAb Common Stock subject to certain price-based earnout triggers (the “Earnout Shares”). Holders of shares of Legacy OmniAb Common Stock received an aggregate 82,611,789 shares of the OmniAb Common Stock, excluding Earnout Shares, as consideration in the Business Combination.

In addition, all outstanding Legacy OmniAb equity awards were converted into OmniAb equity awards to purchase, in the case of options, or receive, in the case of restricted stock units and performance-vesting restricted stock units, shares of OmniAb Common Stock, in each case, equal to the number of shares underlying such Legacy OmniAb equity awards multiplied by 4.90007. Each holder of an outstanding Legacy OmniAb equity award also received Earnout Shares equal to the number of shares of Legacy OmniAb Common Stock underlying such equity award multiplied by 0.75842.

Holders of shares of Legacy OmniAb Common Stock and holders of Legacy OmniAb equity awards received an aggregate 14,999,243 Earnout Shares as consideration in the Business Combination. Fifty percent of the Earnout Shares will vest on the date on which the volume-weighted average price (“VWAP”) equals or exceeds $12.50 on any 20 trading days in any 30 consecutive trading-day period, and all remaining Earnout Shares will vest on the date on which the VWAP equals or exceeds $15.00 on any 20 trading days in any 30 consecutive trading-day period, in each case provided such vesting occurs during the five year period following the Closing Date (the “Earnout Period”); provided, that in the event of a Change of Control (as defined in the Merger Agreement) during the Earnout Period pursuant to which OmniAb or any of its stockholders have the right to receive, directly or indirectly, cash, securities or other property attributing a value of at least $12.50 (with respect to 50% of the Earnout Shares) or $15.00 (with respect to all Earnout Shares) per share of OmniAb Common Stock, and such Change of Control has been approved by a majority of the independent directors of the OmniAb board of directors, then such Earnout Shares shall be deemed to have vested immediately prior to such Change of Control. The Earnout Shares are accounted for as equity-classified equity instruments and recorded in additional paid-in capital as part of the Business Combination.

Pursuant to the Sponsor Insider Letter Agreement executed concurrently with the Merger Agreement, by and among APAC, Avista Acquisition LP II (the “Sponsor”), Legacy OmniAb and certain insiders of APAC, 1,293,299 shares of OmniAb Common Stock held by the Sponsor became subject to the same price-based vesting conditions as the Earnout Shares (the “Sponsor Earnout Shares”). The Sponsor Earnout Shares are accounted for as equity-classified equity instruments and recorded in additional paid-in capital as part of the Business Combination.

On the Closing Date, the Company completed the issuance and sale of 1,500,000 shares of the OmniAb Common Stock and 1,666,667 Forward Purchase Warrants to the Sponsor for an aggregate purchase price of $15.0 million (the “Forward Purchase”), pursuant to the amended and restated forward purchase agreement (the “A&R FPA”). Additionally, and also pursuant to the A&R FPA, on the Closing Date, the Company completed the sale of 8,672,934 shares of the OmniAb Common Stock and 1,445,489 Backstop Warrants to the Sponsor for a purchase price of $10.00 per share and aggregate purchase price of $86.7 million in order to backstop shareholder redemptions which would have otherwise resulted in the cash proceeds available to OmniAb following the Business Combination from OmniAb’s trust account to be less than $100,000,000. Refer to Note 9 – Stockholders' Equity, for additional information on the accounting for the Forward Purchase Warrants and Backstop Warrants.

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Fair Value Measurement

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurement

4. Fair Value Measurement

The Company measures its financial assets and liabilities at fair value, which is defined as the exit price, or the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

The Company uses the following three-level valuation hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs to value its financial assets and liabilities:

•Level 1 — Observable inputs such as unadjusted quoted prices in active markets for identical instruments.

•Level 2 — Quoted prices for similar instruments in active markets or inputs that are observable for the asset or liability, either directly or indirectly.

•Level 3 — Significant unobservable inputs based on the Company’s assumptions.

Financial Instruments Measured on a Recurring Basis

The following tables provide a summary of the assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023:

	Fair Value Measurements as of March 31, 2024
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,589	$	—	$	—	$	12,589
Total cash equivalents	$	12,589	$	—	$	—	$	12,589
Short-term investments:
Government and agency securities	$	48,099	$	—	$	—	$	48,099
Asset-backed securities	—		1,848		—		1,848
Total short-term investments	$	48,099	$	1,848	$	—	$	49,947
Liabilities:
Current contingent liabilities	$	—	$	—	$	891	$	891
Long-term contingent liabilities	—		—		3,178		3,178
Total contingent liabilities	$	—	$	—	$	4,069	$	4,069

	Fair Value Measurements as of December 31, 2023
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,289	$	—	$	—	$	12,289
Total cash equivalents	$	12,289	$	—	$	—	$	12,289
Short-term investments:
Government and agency securities	$	63,109	$	4,998	$	—	$	68,107
Asset-backed securities	—		2,518		—		2,518
Total short-term investments	$	63,109	$	7,516	$	—	$	70,625
Liabilities:
Current contingent liabilities	$	—	$	—	$	1,303	$	1,303
Long-term contingent liabilities	—		—		3,203		3,203
Total contingent liabilities	$	—	$	—	$	4,506	$	4,506

The carrying amounts reported in the Company’s condensed consolidated balance sheets for accounts receivable, other assets, accounts payable and other accrued expenses and other current liabilities approximate fair value due to their relatively short periods to maturity.

Available-for-Sale Securities

The Company obtains the fair value of its Level 2 available-for-sale securities from third-party pricing services. The pricing services utilize industry standard valuation models whereby all significant inputs, including benchmark yields, reported trades, broker/dealer quotes, issuer spreads, bids, offers, or other market-related data, are observable. The Company validates the prices provided by the third-party pricing services by reviewing their pricing methods and obtaining market values from other pricing sources. The Company did not adjust or override any fair value measurements provided by these pricing services as of March 31, 2024 or December 31, 2023. The Company has not transferred any investment securities between classification levels.

Contingent Liabilities

Contingent liabilities are measured at fair value each reporting period by using a probability weighted income approach.

A reconciliation of the Level 3 financial instruments as of March 31, 2024 and December 31, 2023 is as follows:

(in thousands)	Icagen(1)		Taurus(2)		xCella(2)		Total
Balance as of January 1, 2023	$	4,747	$	1,600	$	1,764	$	8,111
Payments to CVR holders	(300)		(1,600)		(2,840)		(4,740)
Fair value adjustments to contingent liabilities	(341)		400		1,076		1,135
Balance as of December 31, 2023	4,106		400		—		4,506
Payments to CVR holders	(75)		(400)		—		(475)
Fair value adjustments to contingent liabilities	38		—		—		38
Balance as of March 31, 2024	$	4,069	$	—	$	—	$	4,069

_____________

(1)Changes in the fair values of contingent liabilities in connection with the acquisition of Icagen are recognized in “Other operating expense, net” in the condensed consolidated statements of operations and in the operating section of the statements of cash flows. Payments to CVR holders are disclosed in the financing section of the statements of cash flows.

(2)Changes in the fair values of contingent liabilities in connection with the acquisitions of Taurus and xCella are recognized in “Intangible assets, net” in the condensed consolidated balance sheets. Payments to CVR holders are disclosed in the investing section of the statement of cash flows.

Contingent liabilities are classified as Level 3 liabilities as their valuation requires substantial judgment and estimation of factors that are not currently observable in the market. These subjective estimates include but are not limited to assumptions involving the achievement probability of certain developmental and commercialization milestones, discount rates, and projected years of payments. If different assumptions were used for the various inputs to the valuation approaches, the estimated fair value could be materially higher or lower than the fair value determined.

Assets Measured on a Non-Recurring Basis

The Company applies fair value techniques on a non-recurring basis associated with valuing potential impairment losses related to goodwill, finite-lived intangible assets, and long-lived assets. No such fair value impairment was recognized during the three months ended March 31, 2024 or year ended December 31, 2023.

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Short-Term Investments

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Short-Term Investments

5. Short-Term Investments

The Company classified short-term investments as available-for-sale securities, as the sale of such investments may be required prior to maturity to implement management strategies. The following tables summarize short-term investments as of March 31, 2024 and December 31, 2023:

	As of March 31, 2024
			Unrealized
(in thousands)	Amortized Cost		Gains		Losses		Estimated Fair Value
Government and agency securities	$	48,115	$	7	$	(22)	$	48,100
Asset backed securities	1,850		—		(3)		1,847
Total short-term investments	$	49,965	$	7	$	(25)	$	49,947

	As of December 31, 2023
			Unrealized
(in thousands)	Amortized Cost		Gains		Losses		Estimated Fair Value
Government and agency securities	$	68,054	$	57	$	(4)	$	68,107
Asset-backed securities	2,522		—		(4)		2,518
Total short-term investments	$	70,576	$	57	$	(8)	$	70,625

The Company classified all investments with maturity dates beyond three months at the date of purchase as short-term investments in the condensed consolidated balance sheets based upon its ability and intent to use the investments to satisfy the liquidity needs of current operations. The following table summarizes available-for-sale investments by maturity as of March 31, 2024:

(in thousands)	Amortized Cost		Estimated Fair Value
Due in one year or less	$	49,965	$	49,947
Due after one year	—		—
Total short-term investments	$	49,965	$	49,947

The following tables summarize the Company’s available-for-sale investments’ gross unrealized losses and fair value aggregated by investment category and length of time that individual securities have been in a continuous loss position, as of March 31, 2024 and December 31, 2023:

	As of March 31, 2024
	Less than 12 months					More than 12 months					Total
(in thousands)	Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses
Government and agency securities	14	$	29,339	$	(21)	—	$	—	$	—	14	$	29,339	$	(21)
Asset backed securities	3	1,848		(3)		—	—		—		3	1,848		(3)
	17	$	31,187	$	(24)	—	$	—	$	—	17	$	31,187	$	(24)

	As of December 31, 2023
	Less than 12 months					More than 12 months					Total
(in thousands)	Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses
Government and agency securities	5	$	10,402	$	(4)	—	$	—	$	—	5	$	10,402	$	(4)
Asset backed securities	3	2,518		(4)		—	—		—		3	2,518		(4)
	8	$	12,920	$	(8)	—	$	—	$	—	8	$	12,920	$	(8)

The Company had certain available-for-sale debt securities in an unrealized loss position without an allowance for credit loss as of March 31, 2024. Unrealized losses on these debt securities have not been recognized into income because (1) the issuers have high credit quality, (2) management does not intend to sell and it is likely that management will not be required to sell these securities prior to their anticipated recovery and (3) the decline in fair value is largely due to market conditions and/or changes in interest rates. The issuers continue to make timely interest payments on the securities, and the fair value is expected to recover as the bonds approach maturity.

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Balance Sheet Account Details

3 Months Ended

Mar. 31, 2024

Balance Sheet Account Details [Abstract]

Balance Sheet Account Details

6. Balance Sheet Account Details

Property and Equipment, Net

Property and equipment, net, consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Leasehold improvements	$	16,077	$	16,077
Lab and office equipment	9,485		9,452
Computer equipment and software	754		754
Construction in progress	1,532		842
Property and equipment, at cost	27,848		27,125
Less accumulated depreciation	(9,891)		(8,876)
Total property and equipment, net	$	17,957	$	18,249

Depreciation expense, which is included in operating expense, was $1.0 million during the three months ended March 31, 2024 and $1.0 million during the three months ended March 31, 2023.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Compensation	$	2,939	$	5,247
Due to former parent	496		1,234
Professional service fees	229		431
Royalties owed to third parties	70		139
Other	293		17
Total accrued expenses and other current liabilities	$	4,027	$	7,068

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Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

7. Goodwill and Intangible Assets

Goodwill and intangible assets, net consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Goodwill	$	83,979	$	83,979
Definite-lived intangible assets
Completed technology	233,158		233,158
Less: Accumulated amortization	(87,443)		(84,328)
Customer relationships	11,100		11,100
Less: Accumulated amortization	(4,760)		(4,463)
Intangible assets, net	$	152,055	$	155,467
Total goodwill and other identifiable intangible assets, net	$	236,034	$	239,446

Goodwill

There were no changes in the carrying amount of goodwill during the three months ended March 31, 2024 and 2023.

Intangible Assets

Amortization of finite-lived intangible assets is computed using the straight-line method over the estimated useful life of the asset of up to 20 years and is reflected within amortization of intangibles expense on the condensed consolidated statements of operations. Amortization expense of $3.4 million was recognized during the three months ended March 31, 2024 and 2023. For each of the three months ended March 31, 2024 and 2023, there was no impairment of intangible assets with finite lives.

The remaining weighted-average useful life of definite lived intangible assets is 11.7 years. At March 31, 2024, future amortization expense on intangible assets is estimated to be as follows (in thousands):

Maturity Dates	Amount
Remaining nine months ended December 31, 2024	$	10,235
2025	13,527
2026	13,487
2027	13,487
2028	13,487
Thereafter	87,832
Total future amortization expense	$	152,055

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

8. Commitments and Contingencies

Lease Commitments

The Company’s corporate headquarters are located in Emeryville, California and its research facilities are located in Emeryville and Dixon, California, Durham, North Carolina and Tucson, Arizona. It leases approximately 70,000 square feet of space under leases expiring from 2026 to 2032.

The below tables provide supplemental cash flow and other information related to operating leases (in thousands, except for lease term and discount rate):

	Three Months Ended March 31,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:	$	901	$	860
Right-of-use assets obtained in exchange for lease obligations:	$	—	$	—

	As of March 31,
	2024		2023
Weighted average remaining lease term (in years)	7.5		8.4
Weighted average discount rate	4.3	%	4.3	%

In addition to base rent, certain of the Company’s operating leases require variable payments. These variable lease costs include amounts relating to common area maintenance and are expensed when the obligation for those payments is incurred and are recognized as operating expenses in the condensed consolidated statements of operations. The following table summarizes the components of operating lease expense for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
(in thousands)	2024	2023
Operating lease cost	796	781
Variable lease cost	381	335
Total lease costs	1,177	1,116

Future minimum lease commitments are as follows as of March 31, 2024 (in thousands):

Maturity Dates	Operating Leases
Remaining nine months ended December 31, 2024	$	2,585
2025	3,772
2026	3,869
2027	3,970
2028	4,103
Thereafter	11,298
Total lease payments	29,597
Less imputed interest	(4,663)
Present value of lease liabilities	$	24,934

Legal Proceedings

From time to time, the Company has been and may be involved in various legal proceedings arising in its ordinary course of business. In the opinion of management, resolution of any pending claims (either individually or in the aggregate) is not expected to have a material adverse impact on the condensed consolidated financial statements, cash flows or financial position and it is not possible to provide an estimated amount of any such loss. However, the outcome of disputes is inherently uncertain. Therefore, although management considers the likelihood of such an outcome to be remote, an unfavorable resolution of one or more matters could materially affect future results of operations or cash flows, or both, in a particular period.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stockholders' Equity

9. Stockholders' Equity

Authorized and Outstanding Capital Stock

The total number of shares of the Company’s authorized capital stock is 1,100,000,000. The total amount of authorized capital stock consists of 1,000,000,000 shares of common stock and 100,000,000 shares of preferred stock. As of March 31, 2024, no shares of preferred stock are issued or outstanding.

Common Stock

Holders of OmniAb Common Stock are entitled to one vote for each share held on all matters submitted to a vote of stockholders, including the election of directors, and do not have cumulative voting rights. Subject to preferences that may be applicable to any then outstanding preferred stock, holders of OmniAb Common Stock are entitled to receive ratably those dividends, if any, as may be declared by the Company’s board of directors out of legally available funds. In the event of liquidation, dissolution or winding up, the holders of OmniAb Common Stock will be entitled to share ratably in the assets legally available for distribution to stockholders after the payment of or provision for all of the Company's debts and other liabilities, subject to the prior rights of any preferred stock then outstanding. Holders of OmniAb Common Stock have no preemptive or conversion rights or other subscription rights and there are no redemption or sinking fund provisions applicable to the OmniAb Common Stock. All outstanding shares of OmniAb Common Stock are duly authorized, validly issued, fully paid and nonassessable. The rights, preferences and privileges of holders of OmniAb Common Stock are subject to and may be adversely affected by the rights of the holders of shares of any series of preferred stock that the Company may designate and issue in the future.

Preferred Stock

Under the terms of the Company’s certificate of incorporation, its board of directors has the authority, without further action by the Company's stockholders, to issue up to 100,000,000 shares of preferred stock in one or more series, to establish from time to time the number of shares to be included in each such series, to fix the dividend, voting and other rights, preferences and privileges of the shares of each wholly unissued series and any qualifications, limitations or restrictions thereon, and to increase or decrease the number of shares of any such series, but not below the number of shares of such series then outstanding.

The Company’s board of directors may authorize the issuance of preferred stock with voting or conversion rights that could adversely affect the voting power or other rights of the holders of OmniAb Common Stock. The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes, could, among other things, have the effect of delaying, deterring or preventing a change in the Company’s control and may adversely affect the market price of OmniAb Common Stock and the voting and other rights of the holders of OmniAb Common Stock. The Company has no current plans to issue any shares of preferred stock.

Earnout Shares

As of March 31, 2024, OmniAb Earnout Shares of 14,999,243 and Sponsor Earnout Shares of 1,293,299 are issued and outstanding. Earnout Shares vest based upon the achievement of certain volume-weighted average trading prices (“VWAP”) for shares of the Company for any 20 trading days over a consecutive 30 trading-day period during the five-year period following the Closing Date, with (i) 50% of such Earnout Shares vesting upon achievement of a VWAP of $12.50 per share of OmniAb Common Stock or upon the occurrence of a change of control transaction that will result in the holders of OmniAb Common Stock receiving a price per share in excess of $12.50, and (ii) the remaining 50% of the Earnout Shares vesting upon achievement of a VWAP of $15.00 per share of OmniAb Common Stock or upon the occurrence of a change of control transaction that will result in the holders of OmniAb Common Stock receiving a price per share in excess of $15.00. The Earnout Shares are not transferable until the vesting condition for the applicable tranche of Earnout Shares has been achieved. Prior to vesting, holders of Earnout Shares are entitled to exercise the voting rights carried by such shares and receive any dividends or other distributions in respect of such shares.

The Earnout Shares will be automatically forfeited for no consideration if the vesting condition for the applicable tranche of Earnout Shares has not been satisfied on or before November 1, 2027.

Warrants

As part of APAC’s initial public offering, 7,666,667 Public Warrants were sold. The Public Warrants entitle the holder thereof to purchase one share of common stock at a price of $11.50 per share, subject to adjustments. The Public Warrants are only exercisable for a whole number of shares of common stock. No fractional shares are to be issued upon exercise of the warrants. The Public Warrants will expire on November 1, 2027 at 5:00 p.m., New York City time, or earlier upon redemption or liquidation. The Public Warrants are listed on the Nasdaq Capital Market under the symbol “OABIW”.

Additionally, the Company can redeem the outstanding Public Warrants:

•in whole and not in part;

•at a price of $0.01 per warrant;

•upon not less than 30 days’ prior written notice of redemption to each warrant holder; and

•if, and only if, the closing price of the ordinary shares equals or exceeds $18.00 per share (as adjusted for share subdivisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within a 30-trading day period ending three trading days before the Company sends the notice of redemption to the warrant holders provided there was an effective registration statement covering the shares of common stock issuable upon exercise of the warrants.

If the Company calls the Public Warrants for redemption as previously described, the Company has the option to require all holders that wish to exercise the Public Warrants to do so on a cashless basis.

Simultaneously with APAC’s initial public offering, APAC consummated a private placement of 8,233,333 Private Placement Warrants with APAC’s sponsor. Each Private Placement Warrant is exercisable for one share of common stock at a price of $11.50 per share, subject to adjustment. The Private Placement Warrants have terms and provisions that are identical to those of the Public Warrants except that the Private Placement Warrants were not transferable, assignable or salable until 30 days after the completion of the Business Combination. The Private Placement Warrants will be redeemable by the Company in all redemption scenarios and exercisable by the holders on the same basis as the Public Warrants.

Additionally, on the Closing Date, the Company issued 1,666,667 Forward Purchase Warrants and 1,445,489 Backstop Warrants pursuant to the A&R FPA. The Forward Purchase Warrants and Backstop Warrants have the same terms as the Private Placement Warrants.

The Company concluded the Public, Private Placement, Forward Purchase and Backstop Warrants meet the criteria to be classified as equity. Upon consummation of the Business Combination, the Public, Private Placement, Forward Purchase and Backstop Warrants were recorded in additional paid-in capital.

Equity Compensation Plans

2022 Incentive Award Plan

The Company’s board of directors and stockholders adopted the 2022 Incentive Award Plan, or the 2022 Plan, which became effective upon the Closing of the Business Combination. Under the 2022 Plan, the Company may grant cash and equity incentive awards to eligible employees, directors and consultants.

As of March 31, 2024, the aggregate number of shares of our common stock that may be issued under the 2022 Plan is 29,886,710 shares. In addition, the number of shares of our common stock available for issuance under the 2022 Plan will be annually increased on January 1 of each calendar year beginning in 2023 and ending in 2032 by an amount equal to the lesser of (i) a number equal to 5% of the fully-diluted shares on the final day of the immediately preceding calendar year or (ii) such smaller number of shares as is determined by the Company's board of directors.

The 2022 Plan provides for the grant of stock options, including incentive stock options and nonqualified stock options, stock appreciation rights, restricted stock, dividend equivalents, RSUs and other stock or cash-based awards.

OmniAb Prior Plans

In connection with the Business Combination, Legacy OmniAb adopted the OmniAb, Inc. 2022 Ligand Service Provider Assumed Award Plan and the OmniAb, Inc. 2022 OmniAb Service Provider Assumed Award Plan, collectively referred to as the OmniAb Prior Plans, which govern the OmniAb equity awards issued upon adjustment of outstanding Ligand equity awards in connection with the Distribution. All awards under the OmniAb Prior Plans that were outstanding as of the closing of the Business Combination continued to be governed by the terms, conditions and procedures set forth in the OmniAb Prior Plans and any applicable award agreements, as those terms may be equitably adjusted in connection with the Business Combination. The Company assumed the OmniAb Prior Plans in connection with the closing of the Business Combination, and each of the awards thereunder.

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Share-Based Compensation

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Share-Based Compensation

10. Share-Based Compensation

Share-Based Compensation Expense

The Company recognized share-based compensation expense by function as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Research and development	$	2,904	$	3,278
General and administrative	2,791		2,777
Total share-based compensation expense	$	5,695	$	6,055

The Company recognized share-based compensation expense by award type as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Stock options	$	3,827	$	3,569
Restricted stock units	1,563		1,926
Employee share purchase plan	152		409
Performance restricted stock units	153		151
Total share-based compensation expense	$	5,695	$	6,055

Stock Options

Stock options granted under the 2022 Plan typically vest 1/8 on the six-month anniversary of the date of grant, and 1/48 each month thereafter for 42 months. All option awards generally expire 10 years from the date of grant.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options granted. The model assumptions include expected volatility, expected term, dividend yield, and the risk-free interest rate.

•Expected volatility: Due to the Company’s limited trading history for its common stock, the expected volatility assumption is based on volatilities of a peer group of similar companies whose share prices are publicly available. The peer group was developed based on companies in the biotechnology industry. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of its own stock price becomes available.

•Expected term: The expected term represents the period of time that options are expected to be outstanding. Because the Company has limited historical exercise behavior, it determines the expected life assumption using the simplified method which is an average of the contractual term of the option and its vesting period.

•Dividend yield: The Company bases the expected dividend yield assumption on the fact that it has never paid cash dividends and has no present intention to pay cash dividends and, therefore, used an expected dividend yield of zero.

•Risk-free interest rate: The risk-free interest rate is based upon U.S. Treasury securities with remaining terms similar to the expected term of the share-based awards.

The fair value of each option issued to employees was estimated on the grant date using the Black-Scholes option pricing model with the following weighted-average assumptions:

	Three Months Ended March 31,
	2024		2023
Risk-free interest rate	4.3	%	3.7	%
Expected volatility	54.1	%	49.9	%
Expected term (years)	6.0		6.2
Dividend yield	—	%	—	%

The following table summarizes stock option activity awarded to OmniAb employees and directors under the Company’s equity award plans:

	Shares	Weighted-Average Exercise Price per Share		Weighted-Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)(1)
Outstanding at January 1, 2024	14,795,859	$	6.50
Granted	2,823,625	$	5.65
Exercised	(269,671)	$	3.72
Cancelled/Expired	(143,997)	$	8.20
Outstanding at March 31, 2024	17,205,816	$	6.39	8.5	$	15,346
Exercisable at March 31, 2024	5,483,912	$	8.43	7.6	$	4,003

_____________

(1)The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the estimated fair value of the common stock for in the money options at March 31, 2024.

As of March 31, 2024, unrecognized share-based compensation expense related to OmniAb options was $30.8 million, which is expected to be recognized over a remaining weighted-average period of approximately 1.46 years. As of March 31, 2024, unrecognized share-based compensation expense related to Ligand options was $1.6 million, which is expected to be recognized over a remaining weighted-average period of approximately 0.54 years.

The aggregate intrinsic value of OmniAb options exercised by OmniAb employees during the three months ended March 31, 2024 was $0.4 million. Cash received from OmniAb options exercised by OmniAb employees during the three months ended March 31, 2024 was $1.0 million.

There were no OmniAb options exercised by Ligand employees during the three months ended March 31, 2024.

Restricted Stock Units

Restricted stock units (“RSUs”) are awards of nontransferable shares of common stock subject to certain vesting conditions and other restrictions. RSUs generally vest over three years. The fair value of restricted stock is determined by the closing market price on the grant date.

The following table summarizes RSU activity during the three months ended March 31, 2024 under the Company’s equity awards plans:

	Shares	Weighted-Average Grant Date Fair Value
Unvested balance at January 1, 2024	1,878,381	$	5.61
Granted	752,064	$	5.64
Vested	(296,489)	$	10.42
Forfeited	(9,543)	$	5.53
Unvested balance at March 31, 2024	2,324,413	$	5.00

As of March 31, 2024, unrecognized stock-based compensation expense related to OmniAb RSUs was $9.4 million, which is expected to be recognized over a remaining weighted-average period of approximately 1.52 years. As of March 31, 2024, unrecognized stock-based compensation expense related to Ligand RSUs was $0.1 million, which is expected to be recognized over a remaining weighted-average period of approximately 0.47 years.

The aggregate intrinsic value of OmniAb RSUs vested for OmniAb employees during the three months ended March 31, 2024 was $1.7 million. The aggregate intrinsic value of OmniAb RSUs vested for Ligand employees during the three months ended March 31, 2024 was $0.7 million.

Performance Restricted Stock Units

PRSUs are share awards that, upon vesting, will deliver to the holder shares of the Company’s common stock. PRSUs vest over a continued employment period and are based on the achievement of certain corporate performance or market goals.

The Company’s PRSUs contain a market condition dependent upon the Company’s relative and absolute total stockholder return over a three-year period, with a payout range of 0% to 200% of the target shares granted. Share-based compensation expense for these PRSUs is measured using the Monte-Carlo valuation model and is not adjusted for the achievement, or lack thereof, of the market conditions.

The following table summarizes the PRSU activity during the three months ended March 31, 2024, under the Company’s equity awards plans:

	Shares	Weighted-Average Grant Date Fair Value
Unvested balance at January 1, 2024	94,749	$	16.11
Granted	—	$	—
Vested	—	$	—
Forfeited	—	$	—
Unvested balance at March 31, 2024	94,749	$	16.11

As of March 31, 2024, unrecognized share-based compensation expense related to OmniAb PRSUs was $0.5 million, which is expected to be recognized over a remaining weighted-average period of approximately 0.75 years.

Employee Stock Purchase Plan

Under the Company’s 2022 Employee Stock Purchase Plan (the “ESPP”), eligible employees are entitled to purchase shares of common stock at a discount with accumulated payroll deductions. The ESPP provides for a series of overlapping 24-month offering periods comprising four six-month purchase periods. The initial offering period under the 2022 ESPP is longer than 24 months, commencing November 1, 2022 and ending on November 29, 2024. The purchase price for shares of common stock purchased under the ESPP is equal to 85% of the lesser of the fair market value of the Company’s common stock on (i) the first trading day of the applicable offering period or (ii) the last trading day of each six month purchase period in the applicable offering period.

As of March 31, 2024, the aggregate number of shares of our common stock that may be issued pursuant to rights granted under the ESPP equals 3,394,578 shares of our common stock. In addition, on the first day of each calendar year beginning on January 1, 2023 and ending on (and including) January 1, 2032, the number of shares available for issuance under the ESPP will be increased by a number of shares equal to the lesser of (i) 1% of the fully diluted shares outstanding on the final day of the immediately preceding calendar year, and (ii) such smaller number of shares as determined by our board of directors.

As of March 31, 2024, there was $0.3 million of unrecognized share-based compensation expense associated with the ESPP, which is expected to be recognized over a remaining weighted-average period of 0.66 years.

During the three months ended March 31, 2024, there were no shares issued pursuant to the ESPP.

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Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

11. Income Taxes

The Company’s effective tax rate may vary from the U.S. federal statutory tax rate due to the change in the mix of earnings in various state jurisdictions with different statutory rates, benefits related to tax credits, and the tax impact of non-deductible expenses, stock award activities and other permanent differences between income before income taxes and taxable income. The Company’s effective tax rate for the three months ended March 31, 2024 was 12.1%. The variance from the U.S. federal statutory tax rate of 21.0% for the three months ended March 31, 2024 was primarily due to the benefit related to tax credits, the tax impact of stock award activities, and the valuation allowance established on federal and state attributes. The Company’s effective tax rate for the three months ended March 31, 2023 was 14.4%. The variance from the U.S. federal statutory tax rate of 21.0% for the three months ended March 31, 2023 was primarily due to the benefit related to tax credits, the tax impact of stock award activities, and the valuation allowance established on state attributes.

The Company considered the realizability of the deferred tax assets and recorded a valuation allowance as necessary for the amount of deferred tax assets which are not more likely than not to be realized as of March 31, 2024.

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Net Loss Per Share

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Net Loss Per Share

12. Net Loss Per Share

Loss Per Share

Basic loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted loss per share is computed based on the sum of the weighted average number of common shares and dilutive common shares outstanding during the period. As described in Note 2 – Summary of Significant Accounting Policies, Earnout Shares issued in connection with the Business Combination, as further described in Note 3 – Business Combination, are subject to vesting based on the VWAP of common shares during the earnout period. The Earnout Shares are excluded from the calculation of basic and diluted weighted-average number of common shares outstanding until vested.

The following table outlines the basic and diluted net loss per share for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
(in thousands, except per share data)	2024		2023
Net loss	$	(18,961)	$	(6,100)
Weighted-average shares outstanding, basic and diluted	100,755		99,158
Net loss per share, basic and diluted	$	(0.19)	$	(0.06)

The following table outlines dilutive common share equivalents outstanding, which are excluded in the above diluted net loss per share calculation, as the effect of their inclusion would be anti-dilutive, or the share equivalents were contingently issuable as of each period presented:

	March 31,
	2024	2023
Options to purchase common stock issued and outstanding(1)	22,437,492	18,735,538
Earnout shares	16,292,542	16,292,542
Avista private placement warrants	8,233,333	8,233,333
Avista public warrants	7,666,667	7,666,667
Restricted stock units issued and outstanding(1)	2,421,767	1,710,065
Forward purchase warrants	1,666,667	1,666,667
Backstop warrants	1,445,489	1,445,489
Shares expected to be purchased under employee stock purchase plan	946,670	1,918,512
Total anti-dilutive shares	61,110,627	57,668,813

_____________

(1)Outstanding stock options and restricted stock units include awards outstanding to employees of Ligand.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net loss	$ (18,961)	$ (6,100)

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Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The Company’s accompanying condensed consolidated financial statements have been prepared in accordance with U.S. GAAP. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as included in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”). The financial information for the three months ended March 31, 2024 and 2023, is unaudited but includes all normal and recurring adjustments unless indicated otherwise, which the Company considered necessary for fair presentation of its condensed consolidated statements of operations and comprehensive loss.

Liquidity and Capital Resources

Liquidity and Capital Resources

The Company expects to continue to incur losses as it invests in research and development activities to improve its technology and platform, market and sell its technologies to existing and new partners, add operational, financial and management information systems and personnel to support its operations and incur ongoing costs associated with operating as a public company. The Company’s ability to continue its operations is dependent upon its ability to generate cash flows from operations and potentially obtain additional capital in the future. The Company believes its existing cash, cash equivalents and short-term investments and the cash it expects to generate from operations will provide it the flexibility needed to meet operating, investing, and financing needs and support operations through at least the next 12 months.

The accompanying condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.

Emerging Growth Company

Emerging Growth Company

OmniAb qualifies as an emerging growth company as defined in Section 2(a) of the Securities Act of 1933, as amended, (“Securities Act”), as modified by the Jumpstart Our Business Startups Act of 2012 (“JOBS Act”).

Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. OmniAb has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, OmniAb, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of OmniAb’s financial statements with another public company, which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period, difficult because of the potential differences in accounting standards used.

Use of Estimates

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and the accompanying notes. Actual results may differ from those estimates.

Cash and Cash Equivalents and Restricted Cash

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents consist of cash and highly liquid investments with maturities of three months or less when purchased. Cash and cash equivalents generally consist of bank deposits, money market funds as well as U.S. government and agency securities. The following table provides a reconciliation of the components of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheets to the total of the amount presented in the condensed consolidated statements of cash flows:

(in thousands)	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	19,060	$	16,358
Restricted cash	560		560
Total cash, cash equivalents and restricted cash presented in the condensed consolidated statements of cash flows	$	19,620	$	16,918

Restricted cash relates to deposits for the Company’s property leases. The restriction will lapse when the related leases expire.

Short-term Investments

Short-term Investments

Short-term investments generally consist of commercial paper, corporate debt securities, asset-backed securities and government and agency securities. The Company classifies short-term investments as “available-for-sale” as the sale of such investments may be required prior to maturity to implement management strategies. Therefore, the Company has classified all investments with maturity dates beyond three months at the date of purchase as current assets in the accompanying condensed consolidated balance sheets based upon its ability and intent to use the investments to satisfy the liquidity needs of current operations. Any premium or discount arising at purchase is amortized and/or accreted to interest income as an adjustment to yield using the straight-line method over the life of the instrument. Investments are reported at their estimated fair value. Unrealized gains and losses are included in accumulated other comprehensive income (loss) as a component of stockholders’ equity until realized.

Accounts Receivable

Accounts Receivable

Accounts receivable represents the amounts billed to the Company’s partners that are due unconditionally for revenue it has earned. The Company establishes an allowance for credit losses to present the net amount of accounts receivable expected to be collected. The allowance requires an estimation based upon historical loss experienced and adjusted for factors that are relevant to determining the expected collectability of accounts receivable. Some of these factors include delinquency trends, aging behavior of receivables, credit and liquidity quality indicators for industry groups, customer classes or individual customers and the current and expected future economic and market conditions.

Property and Equipment

Property and Equipment

Property and equipment are stated at cost, subject to review for impairment, and depreciated over the estimated useful lives of the assets using the straight-line method. Amortization of leasehold improvements is recorded over the shorter of the lease term or estimated useful life of the related asset. Maintenance and repairs are charged to operations as incurred. When assets are sold, or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in operating income or expense.

Asset	Estimated Useful Life
Lab and office equipment	4 - 7 years
Computer hardware	3 - 5 years
Leasehold improvements	Shorter of the useful life or remaining lease term
Computer software	Shorter of 3 years or useful life of asset

Acquisitions

Acquisitions

The Company first determines whether a set of assets acquired constitutes a business and should be accounted for as a business combination. If the assets acquired are not a business, the Company accounts for the transaction as an asset acquisition. Business combinations are accounted for by using the acquisition method of accounting which requires the Company to use significant estimates and assumptions, including fair value estimates, as of the business combination date and to refine those estimates as necessary during the measurement period (defined as the period, not to exceed one year, in which the Company may adjust the provisional amounts recognized).

Under the acquisition method of accounting, the Company recognizes separately from goodwill the identifiable assets acquired, the liabilities assumed, including contingent consideration and all contractual contingencies, generally at the acquisition date fair value. Contingent purchase consideration to be settled in cash is remeasured to estimated fair value at each reporting period with the change in fair value recorded in the statement of operations. Costs that the Company incurs to complete the business combination such as investment banking, legal and other professional fees are not considered part of consideration and the Company charges them to general and administrative expense as they are incurred.

The Company measures goodwill as of the acquisition date as the excess of consideration transferred, which is also measured at fair value, over the net of the acquisition date amounts of the identifiable assets acquired and liabilities assumed.

Should the initial accounting for a business combination be incomplete by the end of a reporting period that falls within the measurement period, the Company reports provisional amounts in its financial statements. During the measurement period, the Company adjusts the provisional amounts recognized at the acquisition date to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date and the Company records those adjustments to its financial statements in the period of change, if any.

Under the acquisition method of accounting for business combinations, if the Company identifies changes to acquired deferred tax asset valuation allowances or liabilities related to uncertain tax positions during the measurement period and they relate to new information obtained about facts and circumstances that existed as of the acquisition date, those changes are considered a measurement period adjustment and the Company records the offset to goodwill. The Company records all other changes to deferred tax asset valuation allowances and liabilities related to uncertain tax positions in current period income tax expense.

Goodwill, Intangible Assets and Other Long-Lived Assets

Goodwill, Intangible Assets and Other Long-Lived Assets

Goodwill, which has an indefinite useful life, represents the excess of cost over fair value of net assets acquired. Goodwill is reviewed for impairment at least annually during the fourth quarter, or more frequently if an event occurs indicating the potential for impairment. During the goodwill impairment review, the Company assesses qualitative factors to determine whether it is more likely than not that the fair value of its reporting unit is less than the carrying amount, including goodwill. The Company operates in one reporting unit. The qualitative factors include, but are not limited to, macroeconomic conditions, industry and market considerations, cost factors, the overall financial performance, and events affecting the reporting unit. If, after assessing the totality of these qualitative factors, the Company determines that it is not more likely than not that the fair value of its reporting unit is less than the carrying amount, then no additional assessment is deemed necessary. Otherwise, the Company proceeds to perform the quantitative assessment. The Company will then evaluate goodwill for impairment by comparing the estimated fair value of the reporting unit to its carrying value, including the associated goodwill. To determine the fair value, the Company generally uses a combination of market approach based on OmniAb and comparable publicly traded companies in similar lines of businesses and the income approach based on estimated discounted future cash flows. The Company’s cash flow assumptions consider historical and forecasted revenue, operating costs and other relevant factors. The Company may also elect to bypass the qualitative assessment in a period and elect to proceed to perform the quantitative assessment for the goodwill impairment test. The Company performed the annual assessment for goodwill impairment during the fourth quarter of 2023. No impairment indicators were noted in any periods presented in the condensed consolidated financial statements under the qualitative assessment.

The Company’s identifiable intangible assets are composed of acquired core technologies, licensed technologies, contractual relationships, customer relationships and trade names. Identifiable intangible assets with finite lives are generally amortized on a straight-line basis over the assets’ respective estimated useful life. The Company regularly performs reviews to determine if any event has occurred that may indicate that intangible assets with finite useful lives and other long-lived assets are potentially impaired. If indicators of impairment exist, an impairment test is performed to assess the recoverability of the affected assets by determining whether the carrying amount of such assets exceeds the undiscounted expected future cash flows. If the affected assets are not recoverable, the Company estimates the fair value of the assets and records an impairment loss if the carrying value of the assets exceeds the fair value. Factors that may indicate potential impairment include market conditions, industry and economic trends, changes in regulations, clinical success, historical and forecasted financial results, significant changes in the ability of a particular asset to generate positive cash flows, and the pattern of utilization of a particular asset.

Public, Private Placement, Forward Purchase and Backstop Common Stock Warrants

Public, Private Placement, Forward Purchase and Backstop Common Stock Warrants

The Company assumed 7,666,667 warrants originally issued in APAC’s initial public offering (the “Public Warrants”) and 8,233,333 warrants issued in a private placement that closed concurrently with APAC’s initial public offering, (the “Private Placement Warrants”) in the Business Combination. Additionally, as further discussed in Note 3 – Business Combination, pursuant to the Amended and Restated Forward Purchase Agreement, dated as of March 23, 2022 (the “A&R FPA”), on the Closing Date, the Company issued 1,666,667 warrants in the Forward Purchase (the “Forward Purchase Warrants”) and 1,445,489 warrants in the Redemption Backstop (the “Backstop Warrants”). The Public, Private Placement, Forward Purchase and Backstop Warrants entitle the holder to purchase one share of the Company’s common stock at an exercise price of $11.50 per share.

The Public Warrants are publicly traded and are exercisable for cash unless certain conditions occur, such as the failure to have an effective registration statement related to the shares issuable upon exercise or redemption by the Company under certain conditions, at which time the warrants may be cashless exercised at the option of the Company. The Private Placement Warrants have terms and provisions that are identical to the Public Warrants except that the Private Placement Warrants were not transferable, assignable or salable until 30 days after the completion of the Business Combination. The Private Placement Warrants will be redeemable by the Company in all redemption scenarios and exercisable by the holders on the same basis as the Public Warrants. The Forward Purchase Warrants and the Backstop Warrants have the same terms as the Private Placement Warrants.

The Company evaluated the Public, Private Placement, Forward Purchase and Backstop Warrants under ASC 815-40, Derivatives and Hedging-Contracts in Entity’s Own Equity (“ASC 815-40”), and concluded they meet the criteria for equity classification as they are considered to be indexed to the Company’s own stock.

Revenue Recognition and Deferred Revenue

Revenue Recognition

The Company applies the following five-step model in accordance with ASC 606, Revenue from Contracts with Customers, in order to determine revenue: (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 distinct in the context of the contract; (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 when (or as) the Company satisfies each performance obligation.

The Company’s revenue is typically derived from license agreements with its partners and consists of: (i) upfront or annual payments for technology access (license revenue), (ii) payments for the performance of research services (service revenue), (iii) downstream payments in the form of preclinical, intellectual property, clinical, regulatory, and commercial milestones (milestone revenue) and (iv) royalties on net sales from partners’ product sales (royalty revenue).

License fees are generally recognized at a point in time once the Company grants partners access to intellectual property rights. The Company generally satisfies its obligation to grant intellectual property rights on the effective date of the contract.

The Company recognizes service revenue for contracted R&D services performed for partners over time. The Company measures its progress using an input method based on the effort it expends or costs it incurs toward the satisfaction of its performance obligation. The Company estimates the amount of effort it expends, including the time it will take to complete the activities, or the costs it may incur in a given period, relative to the estimated total effort or costs to satisfy the performance obligation. This results in a percentage that it multiplies by the transaction price to determine the amount of revenue recognized each period. This approach requires the Company to make estimates and use judgment. If estimates or judgments change over the course of the collaboration, they may affect the timing and amount of revenue recognized in current and future periods.

The Company includes contingent milestone based payments in the estimated transaction price when there is a basis to reasonably estimate the amount of the payment and it is probable of being achieved. These estimates are based on historical experience, anticipated results and its best judgment at the time. If the contingent milestone based payment is sales-based, we apply the royalty recognition constraint and record revenue when the underlying sale has taken place. Significant judgments must be made in determining the transaction price for licenses of intellectual property. Because of the risk that products in development with partners will not reach development based milestones or receive regulatory approval, the Company generally recognizes any contingent payments that would be due to it upon or after achievement of the development milestone or regulatory approval.

Deferred Revenue

Depending on the terms of the arrangement, the Company may also defer a portion of the consideration received if it needs to satisfy a future obligation.

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the condensed consolidated balance sheets. The Company generally receives payment at the point it satisfies its obligation or soon after. Any fees billed in advance of being earned are recorded as deferred revenue.

Research and Development Expenses

Research and Development Expenses

Research and development expenses consist of material, equipment, facilities and labor costs of scientific staff who are working pursuant to collaborative agreements and other research and development projects. Also included in research and development expenses are third-party costs incurred for research programs including in-licensing costs, and costs incurred by other research and development service vendors. The Company expenses these costs as they are incurred. When the Company makes payments for research and development services prior to the services being rendered, it records those amounts as prepaid expenses on its condensed consolidated balance sheets and it expenses them as the services are provided.

Share-Based Compensation

Share-Based Compensation

The Company recognizes share-based compensation expense based on the estimated fair value on a straight-line basis over the requisite service periods of the awards, taking into consideration forfeitures as they occur. The fair value of RSUs is determined by the closing market price of the Company’s common stock on the date of grant. PRSUs generally represent the right to receive a certain number of shares of common stock based on the achievement of the Company’s corporate performance goals and continued employment during the vesting period. Share-based compensation expense for market-based PRSUs is measured using the Monte-Carlo valuation model and is not adjusted for the achievement, or lack thereof, of market conditions.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options granted and stock purchases under the ESPP. The model assumptions include expected volatility, term, dividends, and the risk-free interest rate.

The Company measures and recognizes compensation expense for shares to be issued under its employee stock purchase plan based on an estimated grant date fair value recognized on a straight-line basis over the offering period.

Income Taxes

Income Taxes

The Company provides for income taxes under the asset and liability method prescribed by the ASC Topic 740, Income Taxes (“Topic 740”). Deferred tax assets and liabilities are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates in effect when the differences are expected to reverse. If necessary, deferred tax assets are reduced by a valuation allowance to reflect the uncertainty associated with their ultimate realization.

The Company accounts for uncertain tax positions recognized in the condensed consolidated financial statements in accordance with the provisions of Topic 740 by prescribing a more-likely-than-not threshold for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances. The Company evaluates uncertain tax positions on a quarterly basis and adjusts the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions. Any changes to these estimates, based on the actual results obtained and/or a change in assumptions, could affect its income tax provision in future periods. Interest and penalty charges, if any, related to unrecognized tax benefits would be classified as a provision for income tax in its condensed consolidated statements of operations.

Income (Loss) Per Share

Income (Loss) Per Share

Basic income (loss) per share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted income (loss) per share is computed based on the sum of the weighted average number of common shares and potentially dilutive common shares outstanding during the period.

Comprehensive Income (Loss)

Comprehensive Income (Loss)

Comprehensive income (loss) represents net income (loss) adjusted for the change during the periods presented in unrealized gains and losses on available-for-sale debt securities and reclassification adjustments for realized gains or losses included in net income (loss). The unrealized gains or losses are reported in the condensed consolidated statements of comprehensive income (loss).

Recent Accounting Pronouncements

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed below, the Company believes that the impact of recently issued standards are either not applicable to the Company or will not have a material impact on its consolidated financial statements upon adoption.

The following table provides a brief description of recently issued accounting standards:

Standard	Description	Effective Date	Effect on the Financial Statements or Other Significant Matters
ASU 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures	ASU 2023-07 updates reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses.	Effective for the Company for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024.	The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements and disclosures.
ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures	The amendments in this ASU address investor requests for more transparency about income tax information through improvements to tax disclosures primarily related to the rate reconciliation and income taxes paid information. The ASU also includes certain other amendments to improve the effectiveness of income tax disclosures.	Effective for the Company for annual periods beginning after December 15, 2024, with early adoption permitted.	The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements and disclosures.

Segment Information

Segment Information

Operating segments are components of an enterprise for which separate financial information is available and is evaluated regularly by the Company’s chief operating decision-maker in deciding how to allocate resources and assess performance. The Company manages its business as one operating segment.

Fair Value Measurement

The Company measures its financial assets and liabilities at fair value, which is defined as the exit price, or the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

The Company uses the following three-level valuation hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs to value its financial assets and liabilities:

•Level 1 — Observable inputs such as unadjusted quoted prices in active markets for identical instruments.

•Level 2 — Quoted prices for similar instruments in active markets or inputs that are observable for the asset or liability, either directly or indirectly.

•Level 3 — Significant unobservable inputs based on the Company’s assumptions.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of the components of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheets to the total of the amount presented in the condensed consolidated statements of cash flows:

(in thousands)	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	19,060	$	16,358
Restricted cash	560		560
Total cash, cash equivalents and restricted cash presented in the condensed consolidated statements of cash flows	$	19,620	$	16,918

Schedule of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of the components of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheets to the total of the amount presented in the condensed consolidated statements of cash flows:

(in thousands)	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	19,060	$	16,358
Restricted cash	560		560
Total cash, cash equivalents and restricted cash presented in the condensed consolidated statements of cash flows	$	19,620	$	16,918

Schedule of Property and Equipment, Useful Life

When assets are sold, or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in operating income or expense.

Asset	Estimated Useful Life
Lab and office equipment	4 - 7 years
Computer hardware	3 - 5 years
Leasehold improvements	Shorter of the useful life or remaining lease term
Computer software	Shorter of 3 years or useful life of asset

Property and equipment, net, consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Leasehold improvements	$	16,077	$	16,077
Lab and office equipment	9,485		9,452
Computer equipment and software	754		754
Construction in progress	1,532		842
Property and equipment, at cost	27,848		27,125
Less accumulated depreciation	(9,891)		(8,876)
Total property and equipment, net	$	17,957	$	18,249

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Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Summary of Assets Measured at Fair Value

The following tables provide a summary of the assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023:

	Fair Value Measurements as of March 31, 2024
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,589	$	—	$	—	$	12,589
Total cash equivalents	$	12,589	$	—	$	—	$	12,589
Short-term investments:
Government and agency securities	$	48,099	$	—	$	—	$	48,099
Asset-backed securities	—		1,848		—		1,848
Total short-term investments	$	48,099	$	1,848	$	—	$	49,947
Liabilities:
Current contingent liabilities	$	—	$	—	$	891	$	891
Long-term contingent liabilities	—		—		3,178		3,178
Total contingent liabilities	$	—	$	—	$	4,069	$	4,069

	Fair Value Measurements as of December 31, 2023
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,289	$	—	$	—	$	12,289
Total cash equivalents	$	12,289	$	—	$	—	$	12,289
Short-term investments:
Government and agency securities	$	63,109	$	4,998	$	—	$	68,107
Asset-backed securities	—		2,518		—		2,518
Total short-term investments	$	63,109	$	7,516	$	—	$	70,625
Liabilities:
Current contingent liabilities	$	—	$	—	$	1,303	$	1,303
Long-term contingent liabilities	—		—		3,203		3,203
Total contingent liabilities	$	—	$	—	$	4,506	$	4,506

Summary of Liabilities Measured at Fair Value

The following tables provide a summary of the assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023:

	Fair Value Measurements as of March 31, 2024
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,589	$	—	$	—	$	12,589
Total cash equivalents	$	12,589	$	—	$	—	$	12,589
Short-term investments:
Government and agency securities	$	48,099	$	—	$	—	$	48,099
Asset-backed securities	—		1,848		—		1,848
Total short-term investments	$	48,099	$	1,848	$	—	$	49,947
Liabilities:
Current contingent liabilities	$	—	$	—	$	891	$	891
Long-term contingent liabilities	—		—		3,178		3,178
Total contingent liabilities	$	—	$	—	$	4,069	$	4,069

	Fair Value Measurements as of December 31, 2023
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	12,289	$	—	$	—	$	12,289
Total cash equivalents	$	12,289	$	—	$	—	$	12,289
Short-term investments:
Government and agency securities	$	63,109	$	4,998	$	—	$	68,107
Asset-backed securities	—		2,518		—		2,518
Total short-term investments	$	63,109	$	7,516	$	—	$	70,625
Liabilities:
Current contingent liabilities	$	—	$	—	$	1,303	$	1,303
Long-term contingent liabilities	—		—		3,203		3,203
Total contingent liabilities	$	—	$	—	$	4,506	$	4,506

Summary of Changes in the Fair Value of the Company's Level 3 Financial Instruments that are Measured at Fair Value

A reconciliation of the Level 3 financial instruments as of March 31, 2024 and December 31, 2023 is as follows:

(in thousands)	Icagen(1)		Taurus(2)		xCella(2)		Total
Balance as of January 1, 2023	$	4,747	$	1,600	$	1,764	$	8,111
Payments to CVR holders	(300)		(1,600)		(2,840)		(4,740)
Fair value adjustments to contingent liabilities	(341)		400		1,076		1,135
Balance as of December 31, 2023	4,106		400		—		4,506
Payments to CVR holders	(75)		(400)		—		(475)
Fair value adjustments to contingent liabilities	38		—		—		38
Balance as of March 31, 2024	$	4,069	$	—	$	—	$	4,069

_____________

(1)Changes in the fair values of contingent liabilities in connection with the acquisition of Icagen are recognized in “Other operating expense, net” in the condensed consolidated statements of operations and in the operating section of the statements of cash flows. Payments to CVR holders are disclosed in the financing section of the statements of cash flows.

(2)Changes in the fair values of contingent liabilities in connection with the acquisitions of Taurus and xCella are recognized in “Intangible assets, net” in the condensed consolidated balance sheets. Payments to CVR holders are disclosed in the investing section of the statement of cash flows.

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Short-Term Investments (Tables)

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Summary of Short-Term Investments

The following tables summarize short-term investments as of March 31, 2024 and December 31, 2023:

	As of March 31, 2024
			Unrealized
(in thousands)	Amortized Cost		Gains		Losses		Estimated Fair Value
Government and agency securities	$	48,115	$	7	$	(22)	$	48,100
Asset backed securities	1,850		—		(3)		1,847
Total short-term investments	$	49,965	$	7	$	(25)	$	49,947

	As of December 31, 2023
			Unrealized
(in thousands)	Amortized Cost		Gains		Losses		Estimated Fair Value
Government and agency securities	$	68,054	$	57	$	(4)	$	68,107
Asset-backed securities	2,522		—		(4)		2,518
Total short-term investments	$	70,576	$	57	$	(8)	$	70,625

Summary of Available-for-Sale Investments by Maturity

The following table summarizes available-for-sale investments by maturity as of March 31, 2024:

(in thousands)	Amortized Cost		Estimated Fair Value
Due in one year or less	$	49,965	$	49,947
Due after one year	—		—
Total short-term investments	$	49,965	$	49,947

Schedule of Available-for-Sale Debt Securities in an Unrealized Loss Position

The following tables summarize the Company’s available-for-sale investments’ gross unrealized losses and fair value aggregated by investment category and length of time that individual securities have been in a continuous loss position, as of March 31, 2024 and December 31, 2023:

	As of March 31, 2024
	Less than 12 months					More than 12 months					Total
(in thousands)	Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses
Government and agency securities	14	$	29,339	$	(21)	—	$	—	$	—	14	$	29,339	$	(21)
Asset backed securities	3	1,848		(3)		—	—		—		3	1,848		(3)
	17	$	31,187	$	(24)	—	$	—	$	—	17	$	31,187	$	(24)

	As of December 31, 2023
	Less than 12 months					More than 12 months					Total
(in thousands)	Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses
Government and agency securities	5	$	10,402	$	(4)	—	$	—	$	—	5	$	10,402	$	(4)
Asset backed securities	3	2,518		(4)		—	—		—		3	2,518		(4)
	8	$	12,920	$	(8)	—	$	—	$	—	8	$	12,920	$	(8)

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Balance Sheet Account Details (Tables)

3 Months Ended

Mar. 31, 2024

Balance Sheet Account Details [Abstract]

Schedule of Property and Equipment, Net

When assets are sold, or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in operating income or expense.

Asset	Estimated Useful Life
Lab and office equipment	4 - 7 years
Computer hardware	3 - 5 years
Leasehold improvements	Shorter of the useful life or remaining lease term
Computer software	Shorter of 3 years or useful life of asset

Property and equipment, net, consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Leasehold improvements	$	16,077	$	16,077
Lab and office equipment	9,485		9,452
Computer equipment and software	754		754
Construction in progress	1,532		842
Property and equipment, at cost	27,848		27,125
Less accumulated depreciation	(9,891)		(8,876)
Total property and equipment, net	$	17,957	$	18,249

Schedule of Accrued Liabilities

Accrued expenses and other current liabilities consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Compensation	$	2,939	$	5,247
Due to former parent	496		1,234
Professional service fees	229		431
Royalties owed to third parties	70		139
Other	293		17
Total accrued expenses and other current liabilities	$	4,027	$	7,068

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill and Intangible Assets

Goodwill and intangible assets, net consisted of the following as of March 31, 2024 and December 31, 2023:

(in thousands)	March 31, 2024		December 31, 2023
Goodwill	$	83,979	$	83,979
Definite-lived intangible assets
Completed technology	233,158		233,158
Less: Accumulated amortization	(87,443)		(84,328)
Customer relationships	11,100		11,100
Less: Accumulated amortization	(4,760)		(4,463)
Intangible assets, net	$	152,055	$	155,467
Total goodwill and other identifiable intangible assets, net	$	236,034	$	239,446

Schedule of Finite- Lived Assets Future Amortization Expense

The remaining weighted-average useful life of definite lived intangible assets is 11.7 years. At March 31, 2024, future amortization expense on intangible assets is estimated to be as follows (in thousands):

Maturity Dates	Amount
Remaining nine months ended December 31, 2024	$	10,235
2025	13,527
2026	13,487
2027	13,487
2028	13,487
Thereafter	87,832
Total future amortization expense	$	152,055

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Summary of Operating Lease Expense

The below tables provide supplemental cash flow and other information related to operating leases (in thousands, except for lease term and discount rate):

	Three Months Ended March 31,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:	$	901	$	860
Right-of-use assets obtained in exchange for lease obligations:	$	—	$	—

	As of March 31,
	2024		2023
Weighted average remaining lease term (in years)	7.5		8.4
Weighted average discount rate	4.3	%	4.3	%

The following table summarizes the components of operating lease expense for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
(in thousands)	2024	2023
Operating lease cost	796	781
Variable lease cost	381	335
Total lease costs	1,177	1,116

Schedule of Future Minimum Lease Commitments

Future minimum lease commitments are as follows as of March 31, 2024 (in thousands):

Maturity Dates	Operating Leases
Remaining nine months ended December 31, 2024	$	2,585
2025	3,772
2026	3,869
2027	3,970
2028	4,103
Thereafter	11,298
Total lease payments	29,597
Less imputed interest	(4,663)
Present value of lease liabilities	$	24,934

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Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Summary of Share-Based Compensation Expense

The Company recognized share-based compensation expense by function as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Research and development	$	2,904	$	3,278
General and administrative	2,791		2,777
Total share-based compensation expense	$	5,695	$	6,055

The Company recognized share-based compensation expense by award type as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Stock options	$	3,827	$	3,569
Restricted stock units	1,563		1,926
Employee share purchase plan	152		409
Performance restricted stock units	153		151
Total share-based compensation expense	$	5,695	$	6,055

Schedule of Assumptions Used to Estimate Fair Value of Employee Stock Options

The fair value of each option issued to employees was estimated on the grant date using the Black-Scholes option pricing model with the following weighted-average assumptions:

	Three Months Ended March 31,
	2024		2023
Risk-free interest rate	4.3	%	3.7	%
Expected volatility	54.1	%	49.9	%
Expected term (years)	6.0		6.2
Dividend yield	—	%	—	%

Schedule of Stock Options Roll Forward

The following table summarizes stock option activity awarded to OmniAb employees and directors under the Company’s equity award plans:

	Shares	Weighted-Average Exercise Price per Share		Weighted-Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)(1)
Outstanding at January 1, 2024	14,795,859	$	6.50
Granted	2,823,625	$	5.65
Exercised	(269,671)	$	3.72
Cancelled/Expired	(143,997)	$	8.20
Outstanding at March 31, 2024	17,205,816	$	6.39	8.5	$	15,346
Exercisable at March 31, 2024	5,483,912	$	8.43	7.6	$	4,003

_____________

(1)The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the estimated fair value of the common stock for in the money options at March 31, 2024.

Summary of RSU and PRSU Activity

The following table summarizes RSU activity during the three months ended March 31, 2024 under the Company’s equity awards plans:

	Shares	Weighted-Average Grant Date Fair Value
Unvested balance at January 1, 2024	1,878,381	$	5.61
Granted	752,064	$	5.64
Vested	(296,489)	$	10.42
Forfeited	(9,543)	$	5.53
Unvested balance at March 31, 2024	2,324,413	$	5.00

Summary of RSU and PRSU Activity

The following table summarizes the PRSU activity during the three months ended March 31, 2024, under the Company’s equity awards plans:

	Shares	Weighted-Average Grant Date Fair Value
Unvested balance at January 1, 2024	94,749	$	16.11
Granted	—	$	—
Vested	—	$	—
Forfeited	—	$	—
Unvested balance at March 31, 2024	94,749	$	16.11

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Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Summary of Basic and Diluted Net Loss Per Share

The following table outlines the basic and diluted net loss per share for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
(in thousands, except per share data)	2024		2023
Net loss	$	(18,961)	$	(6,100)
Weighted-average shares outstanding, basic and diluted	100,755		99,158
Net loss per share, basic and diluted	$	(0.19)	$	(0.06)

Summary of Dilutive Common Shares

The following table outlines dilutive common share equivalents outstanding, which are excluded in the above diluted net loss per share calculation, as the effect of their inclusion would be anti-dilutive, or the share equivalents were contingently issuable as of each period presented:

	March 31,
	2024	2023
Options to purchase common stock issued and outstanding(1)	22,437,492	18,735,538
Earnout shares	16,292,542	16,292,542
Avista private placement warrants	8,233,333	8,233,333
Avista public warrants	7,666,667	7,666,667
Restricted stock units issued and outstanding(1)	2,421,767	1,710,065
Forward purchase warrants	1,666,667	1,666,667
Backstop warrants	1,445,489	1,445,489
Shares expected to be purchased under employee stock purchase plan	946,670	1,918,512
Total anti-dilutive shares	61,110,627	57,668,813

_____________

(1)Outstanding stock options and restricted stock units include awards outstanding to employees of Ligand.

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Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Cash and cash equivalents	$ 19,060	$ 16,358
Restricted cash	560	560
Total cash, cash equivalents and restricted cash presented in the consolidated and combined statements of cash flows	$ 19,620	$ 16,918	$ 23,310	$ 33,839

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Summary of Significant Accounting Policies - Property and Equipment (Details)	Mar. 31, 2024
Computer software
Summary Of Significant Accounting Policies [Line Items]
Estimated Useful Life	3 years
Minimum | Lab and office equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated Useful Life	4 years
Minimum | Computer equipment and software
Summary Of Significant Accounting Policies [Line Items]
Estimated Useful Life	3 years
Maximum | Lab and office equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated Useful Life	7 years
Maximum | Computer equipment and software
Summary Of Significant Accounting Policies [Line Items]
Estimated Useful Life	5 years

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Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, $ in Millions		3 Months Ended
	Nov. 01, 2022 $ / shares shares	Mar. 31, 2024 USD ($) segment reportingUnit	Mar. 31, 2023 USD ($)
Number of reporting units | reportingUnit		1
Shares cancelled in exchange for common stock (in shares)	1
Warrant price (dollars per share) | $ / shares	$ 11.50
Contract with customer liability revenue recognized | $		$ 2.2	$ 3.1
Number of reportable segments | segment		1
Avista public warrants
Warrants outstanding (in shares)	7,666,667
Avista private placement warrants
Warrants outstanding (in shares)	8,233,333
Forward Purchase Warrants
Warrants outstanding (in shares)	1,666,667
Backstop warrants
Warrants outstanding (in shares)	1,445,489
Warrant price (dollars per share) | $ / shares	$ 10.00
Private Placement Warrants
Warrants outstanding (in shares)	8,233,333
Shares cancelled in exchange for common stock (in shares)	1
Warrant restriction on transfer	30 days

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Business Combination - Additional Details (Details) - USD ($)	Mar. 31, 2024	Nov. 01, 2022	Dec. 31, 2023
Business Combination, Separately Recognized Transactions [Line Items]
Proceeds from consummation of separation transaction		$ 1,800,000
Common shares, par value, (dollars per share)	$ 0.0001	$ 0.001	$ 0.0001
Preferred stock, par value, (dollars per share)	0.0001		$ 0.0001
Contingent consideration, liability, share		1
Shares cancelled in exchange for common stock (in shares)		1
Earnout shares (in shares)		14,999,243
VWAP trading price (dollars per share)	$ 12.50	$ 12.50
Threshold trading days		20 days
Threshold consecutive trading days		30 days
Warrant price (dollars per share)		$ 11.50
Avista Acquisition LP II
Business Combination, Separately Recognized Transactions [Line Items]
Earnout Founder Shares (in shares)		1,293,299
Amended and Restated Forward Purchase Agreement
Business Combination, Separately Recognized Transactions [Line Items]
Issuance of common stock (in shares)		1,500,000
Consideration received		$ 15,000,000
Amended and Restated Forward Purchase Agreement - Backstop
Business Combination, Separately Recognized Transactions [Line Items]
Issuance of common stock (in shares)		8,672,934
Consideration received		$ 86,700,000
Public Warrants
Business Combination, Separately Recognized Transactions [Line Items]
Shares cancelled in exchange for common stock (in shares)	1
Shares vesting upon first achievement, percentage		50.00%
Threshold trading days	20 days	20 days
Threshold consecutive trading days	30 days	30 days
Threshold after closing date	5 years	5 years
Warrants outstanding (in shares)		7,666,667
Forward Purchase Warrants
Business Combination, Separately Recognized Transactions [Line Items]
Warrants outstanding (in shares)		1,666,667
Backstop warrants
Business Combination, Separately Recognized Transactions [Line Items]
Warrants outstanding (in shares)		1,445,489
Warrant price (dollars per share)		$ 10.00
Amended and Restated Forward Purchase Agreement | Sponsor | Avista Public Acquisition Corp. II
Business Combination, Separately Recognized Transactions [Line Items]
Maximum additional aggregate purchase price		$ 100,000,000
New OmniAb Common Stock
Business Combination, Separately Recognized Transactions [Line Items]
Common shares, par value, (dollars per share)		$ 0.0001
Preferred stock, par value, (dollars per share)		$ 0.0001
Shares cancelled in exchange for common stock (in shares)		4.90007
Shares issued during separation (in shares)		82,611,789
Earnout shares
Business Combination, Separately Recognized Transactions [Line Items]
Commons stock subject to price-based earnout triggers (in shares)		0.75842
VWAP trading price (dollars per share)	$ 15.00	$ 15.00

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Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	$ 49,947	$ 70,625
Current contingent liabilities	891	1,303
Long-term contingent liabilities	3,178	3,203
Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	48,100	68,107
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	1,847	2,518
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	12,589	12,289
Total short-term investments	49,947	70,625
Current contingent liabilities	891	1,303
Long-term contingent liabilities	3,178	3,203
Total contingent liabilities	4,069	4,506
Fair Value, Recurring | Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	48,099	68,107
Fair Value, Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	1,848	2,518
Fair Value, Recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	12,589	12,289
Level 1 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	12,589	12,289
Total short-term investments	48,099	63,109
Current contingent liabilities	0	0
Long-term contingent liabilities	0	0
Total contingent liabilities	0	0
Level 1 | Fair Value, Recurring | Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	48,099	63,109
Level 1 | Fair Value, Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	0	0
Level 1 | Fair Value, Recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	12,589	12,289
Level 2 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0	0
Total short-term investments	1,848	7,516
Current contingent liabilities	0	0
Long-term contingent liabilities	0	0
Total contingent liabilities	0	0
Level 2 | Fair Value, Recurring | Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	0	4,998
Level 2 | Fair Value, Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	1,848	2,518
Level 2 | Fair Value, Recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0	0
Level 3 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	0	0
Total short-term investments	0	0
Current contingent liabilities	891	1,303
Long-term contingent liabilities	3,178	3,203
Total contingent liabilities	4,069	4,506
Level 3 | Fair Value, Recurring | Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	0	0
Level 3 | Fair Value, Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	0	0
Level 3 | Fair Value, Recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents	$ 0	$ 0

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Fair Value Measurement - Summary of Level 3 Financial Instruments (Details) - Business Combination Contingent Consideration Liability - Level 3 - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of level 3 financial instruments, beginning balance	$ 4,506	$ 8,111
Payments to CVR holders	(475)	(4,740)
Fair value adjustments to contingent liabilities	38	1,135
Fair value of level 3 financial instruments, ending balance	4,069	4,506
Icagen
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of level 3 financial instruments, beginning balance	4,106	4,747
Payments to CVR holders	(75)	(300)
Fair value adjustments to contingent liabilities	38	(341)
Fair value of level 3 financial instruments, ending balance	4,069	4,106
Taurus
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of level 3 financial instruments, beginning balance	400	1,600
Payments to CVR holders	(400)	(1,600)
Fair value adjustments to contingent liabilities	0	400
Fair value of level 3 financial instruments, ending balance	0	400
xCella
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of level 3 financial instruments, beginning balance	0	1,764
Payments to CVR holders	0	(2,840)
Fair value adjustments to contingent liabilities	0	1,076
Fair value of level 3 financial instruments, ending balance	$ 0	$ 0

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Short-Term Investments - Schedule of Short-Term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 49,965	$ 70,576
Gains	7	57
Losses	(25)	(8)
Estimated Fair Value	49,947	70,625
Government and agency securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	48,115	68,054
Gains	7	57
Losses	(22)	(4)
Estimated Fair Value	48,100	68,107
Asset-backed securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	1,850	2,522
Gains	0	0
Losses	(3)	(4)
Estimated Fair Value	$ 1,847	$ 2,518

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Short-Term Investments - Summary of Available-for-Sale Investments by Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Due in one year or less	$ 49,965
Due after one year	0
Amortized Cost	49,965	$ 70,576
Estimated Fair Value
Due in one year or less	49,947
Due after one year	0
Total short-term investments	$ 49,947	$ 70,625

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Short-Term Investments - Summary of Available-for-Sale Investments in a Continuous Loss Position (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-Sale [Line Items]
Count | security	17	8
Fair Value	$ 31,187	$ 12,920
Unrealized Losses	$ (24)	$ (8)
Count | security	0	0
Fair Value	$ 0	$ 0
Unrealized Losses	$ 0	$ 0
Count | security	17	8
Fair Value	$ 31,187	$ 12,920
Unrealized Losses	$ (24)	$ (8)
Government and agency securities
Debt Securities, Available-for-Sale [Line Items]
Count | security	14	5
Fair Value	$ 29,339	$ 10,402
Unrealized Losses	$ (21)	$ (4)
Count | security	0	0
Fair Value	$ 0	$ 0
Unrealized Losses	$ 0	$ 0
Count | security	14	5
Fair Value	$ 29,339	$ 10,402
Unrealized Losses	$ (21)	$ (4)
Asset-backed securities
Debt Securities, Available-for-Sale [Line Items]
Count | security	3	3
Fair Value	$ 1,848	$ 2,518
Unrealized Losses	$ (3)	$ (4)
Count | security	0	0
Fair Value	$ 0	$ 0
Unrealized Losses	$ 0	$ 0
Count | security	3	3
Fair Value	$ 1,848	$ 2,518
Unrealized Losses	$ (3)	$ (4)

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Balance Sheet Account Details - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 27,848	$ 27,125
Less accumulated depreciation	(9,891)	(8,876)
Property and equipment, net	17,957	18,249
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	16,077	16,077
Lab and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	9,485	9,452
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	754	754
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 1,532	$ 842

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Balance Sheet Account Details - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Depreciation expense	$ 1.0	$ 1.0

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Balance Sheet Account Details - Schedule of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Balance Sheet Account Details [Abstract]
Compensation	$ 2,939	$ 5,247
Due to former parent	496	1,234
Professional service fees	229	431
Royalties owed to third parties	70	139
Other	293	17
Accrued expenses and other current liabilities	$ 4,027	$ 7,068

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Goodwill and Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Goodwill	$ 83,979	$ 83,979
Definite-lived intangible assets
Intangible assets, net	152,055	155,467
Total goodwill and other identifiable intangible assets, net	236,034	239,446
Completed technology
Definite-lived intangible assets
Definite-lived intangible assets	233,158	233,158
Less: Accumulated amortization	(87,443)	(84,328)
Customer relationships
Definite-lived intangible assets
Definite-lived intangible assets	11,100	11,100
Less: Accumulated amortization	$ (4,760)	$ (4,463)

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Goodwill and Intangible Assets - Additional Details (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-lived asset, useful life (in years)	20 years
Amortization expense	$ 3,412,000	$ 3,369,000
Impairment of intangible assets	$ 0	$ 0
Finite-lived asset, weighted average useful life (in years)	11 years 8 months 12 days

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Goodwill and Intangible Assets - Schedule of Finite- Lived Assets Future Amortization Expense (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remaining nine months ended December 31, 2024	$ 10,235
2025	13,527
2026	13,487
2027	13,487
2028	13,487
Thereafter	87,832
Total future amortization expense	$ 152,055

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Commitments and Contingencies - Summary of Supplemental Cash Flow and Other Information Related to Operating Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) ft²	Mar. 31, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Leased area, square footage | ft²	70,000
Cash paid for amounts included in the measurement of lease liabilities:	$ 901	$ 860
Right-of-use assets obtained in exchange for lease obligations:	$ 0	$ 0
Weighted average remaining lease term (in years)	7 years 6 months	8 years 4 months 24 days
Weighted average discount rate	4.30%	4.30%

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Commitments and Contingencies - Summary of Operating Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Operating lease cost	$ 796	$ 781
Variable lease cost	381	335
Total lease costs	$ 1,177	$ 1,116

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Commitments and Contingencies - Schedule of Future Minimum Lease Commitments (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Operating Leases
Remaining nine months ended December 31, 2024	$ 2,585
2025	3,772
2026	3,869
2027	3,970
2028	4,103
Thereafter	11,298
Total lease payments	29,597
Less imputed interest	(4,663)
Present value of lease liabilities	$ 24,934

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Stockholders' Equity - Additional Details (Details)			3 Months Ended
	Mar. 31, 2024 $ / shares shares	Nov. 01, 2022 $ / shares shares	Mar. 31, 2024 vote shares	Dec. 31, 2023 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Authorized capital stock (in shares)	1,100,000,000		1,100,000,000
Common shares, shares authorized (in shares)	1,000,000,000		1,000,000,000	1,000,000,000
Preferred stock, shares issued (in shares)	0		0	0
Preferred stock, shares outstanding (in shares)	0		0	0
Preferred stock, shares authorized (in shares)	100,000,000		100,000,000	100,000,000
Voting rights | vote			1
Threshold trading days		20 days
Threshold consecutive trading days		30 days
VWAP trading price (dollars per share) | $ / shares	$ 12.50	$ 12.50
Shares cancelled in exchange for common stock (in shares)		1
Warrant price (dollars per share) | $ / shares		$ 11.50
2022 Incentive Award Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares available for issuance (in shares)	29,886,710		29,886,710
2022 Ligand Service Provider Assumed Award Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares available for issuance, annual increase, percentage			5.00%
Earnout shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrants outstanding (in shares)	14,999,243		14,999,243
Sponsor Earnout Shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrants outstanding (in shares)	1,293,299		1,293,299
Public Warrants
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrants outstanding (in shares)		7,666,667
Threshold trading days	20 days	20 days
Threshold consecutive trading days	30 days	30 days
Threshold after closing date	5 years	5 years	5 years
Shares vesting upon first achievement, percentage	50.00%
Shares cancelled in exchange for common stock (in shares)	1		1
Redemption price (dollars per share) | $ / shares		$ 0.01
Redemption period		30 days
Warrant redemption, minimum share price (dollars per share) | $ / shares		$ 18.00
Trading days prior to redemption notice		3 days
Private Placement Warrants
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrants outstanding (in shares)		8,233,333
Threshold trading days		30 days
Shares cancelled in exchange for common stock (in shares)		1
Forward Purchase Warrants
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrants outstanding (in shares)		1,666,667
Backstop warrants
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrants outstanding (in shares)		1,445,489
Warrant price (dollars per share) | $ / shares		$ 10.00
Earnout shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
VWAP trading price (dollars per share) | $ / shares	$ 15.00	$ 15.00

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Share-Based Compensation - Summary of Share-Based Compensation Expense by Function (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	$ 5,695	$ 6,055
Research and development
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	2,904	3,278
General and administrative
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	$ 2,791	$ 2,777

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Share-Based Compensation - Summary of Share-Based Compensation Expense by Award Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	$ 5,695	$ 6,055
Stock options
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	3,827	3,569
Restricted stock units
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	1,563	1,926
Employee share purchase plan
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	152	409
Performance restricted stock units
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	$ 153	$ 151

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Share-Based Compensation - Schedule of Assumptions Used to Estimate Fair Value of Employee Stock Options (Details) - Stock options	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Risk-free interest rate	4.30%	3.70%
Expected volatility	54.10%	49.90%
Expected term (years)	6 years	6 years 2 months 12 days
Dividend yield	0.00%	0.00%

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Share-Based Compensation - Schedule of Stock Options Roll Forward (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) $ / shares shares
Shares
Outstanding, beginning of period (in shares) | shares	14,795,859
Granted (in shares) | shares	2,823,625
Exercised (in shares) | shares	(269,671)
Cancelled/Expired (in shares) | shares	(143,997)
Outstanding, end of period (in shares) | shares	17,205,816
Exercisable (in shares) | shares	5,483,912
Weighted-Average Exercise Price per Share
Weighted-average exercise price per share, beginning balance (in dollars per share) | $ / shares	$ 6.50
Granted (in dollars per share) | $ / shares	5.65
Exercised (in dollars per share) | $ / shares	3.72
Cancelled/expired (in dollars per share) | $ / shares	8.20
Weighted-average exercise price per share, ending balance (in dollars per share) | $ / shares	6.39
Exercisable (in dollars per share) | $ / shares	$ 8.43
Weighted-average remaining contractual life (in years)	8 years 6 months
Weighted-average remaining contractual life, excercisable (in years)	7 years 7 months 6 days
Aggregate intrinsic value | $	$ 15,346
Aggregate intrinsic value, exercisable | $	$ 4,003

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Share-Based Compensation - Additional Details (Details) $ in Thousands			3 Months Ended
	Mar. 31, 2024 USD ($) shares	Nov. 01, 2022	Mar. 31, 2024 USD ($) period shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Threshold trading days		20 days
OmniAb
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense	$ 30,800		$ 30,800
Aggregate intrinsic value of options exercised			400
Cash received from options exercised			1,000
Ligand
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense	1,600		1,600
Aggregate intrinsic value of options exercised			$ 0
Stock options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expiration period			10 years
Stock options | OmniAb
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period for recognition			1 year 5 months 15 days
Stock options | Ligand
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period for recognition			6 months 14 days
Restricted stock units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period			3 years
Restricted stock units | OmniAb
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period for recognition			1 year 6 months 7 days
Unrecognized stock-based compensation expense related to RSUs and ESPP	9,400		$ 9,400
Intrinsic value of RSUs vested			$ 1,700
Restricted stock units | Ligand
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period for recognition			5 months 19 days
Unrecognized stock-based compensation expense related to RSUs and ESPP	100		$ 100
Intrinsic value of RSUs vested			$ 700
Performance restricted stock units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period			3 years
Performance restricted stock units | OmniAb
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period for recognition			9 months
Unrecognized stock-based compensation expense related to RSUs and ESPP	500		$ 500
Performance restricted stock units | Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period, percentage			0.00%
Performance restricted stock units | Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period, percentage			200.00%
Employee share purchase plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period for recognition			7 months 28 days
Unrecognized stock-based compensation expense related to RSUs and ESPP	$ 300		$ 300
Series of offering periods			24 months
Number of offering periods | period			4
Offering period			6 months
Initial offering period			24 months
Purchase price of common stock expressed as a percentage of its fair value			85.00%
Shares available to be issued under ESPP (in shares) | shares	3,394,578		3,394,578
Increase in shares available for issuance, percent	0.01
Shares issued (in shares) | shares			0
Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period			6 months
Award vesting period, percentage			12.50%
Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period			42 months
Award vesting period, percentage			2.10%

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Share-Based Compensation - Summary of RSU and PRSU Activity (Details)	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Restricted stock units
Shares
Unvested, beginning balance (in shares) | shares	1,878,381
Granted (in shares) | shares	752,064
Vested (in shares) | shares	(296,489)
Forfeited (in shares) | shares	(9,543)
Unvested, ending balance (in shares) | shares	2,324,413
Weighted-Average Grant Date Fair Value
Unvested, beginning balance (in dollars per share) | $ / shares	$ 5.61
Granted (in dollars per share) | $ / shares	5.64
Vested (in dollars per share) | $ / shares	10.42
Forfeited (in dollars per share) | $ / shares	5.53
Unvested, ending balance (in dollars per share) | $ / shares	$ 5.00
Performance restricted stock units
Shares
Unvested, beginning balance (in shares) | shares	94,749
Granted (in shares) | shares	0
Vested (in shares) | shares	0
Forfeited (in shares) | shares	0
Unvested, ending balance (in shares) | shares	94,749
Weighted-Average Grant Date Fair Value
Unvested, beginning balance (in dollars per share) | $ / shares	$ 16.11
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	0
Unvested, ending balance (in dollars per share) | $ / shares	$ 16.11

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Income Taxes - Additional Information (Details)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Effective income tax rate, percent	12.10%	14.40%

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Net Loss Per Share - Additional Details (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Weighted-average shares outstanding, basic (in shares)	100,755	99,158
Weighted-average shares outstanding, diluted (in shares)	100,755	99,158

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Net Loss Per Share - Summary of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net loss	$ (18,961)	$ (6,100)
Weighted-average shares outstanding, basic (in shares)	100,755	99,158
Weighted-average shares outstanding, diluted (in shares)	100,755	99,158
Net loss per share, basic (dollars per share)	$ (0.19)	$ (0.06)
Net loss per share, diluted (dollars per share)	$ (0.19)	$ (0.06)

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Net Loss Per Share - Summary of Dilutive Common Shares (Details) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	61,110,627	57,668,813
Options to purchase common stock issued and outstanding
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	22,437,492	18,735,538
Warrants | Earnout shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	16,292,542	16,292,542
Warrants | Avista private placement warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	8,233,333	8,233,333
Warrants | Avista public warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	7,666,667	7,666,667
Warrants | Forward purchase warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	1,666,667	1,666,667
Warrants | Backstop warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	1,445,489	1,445,489
Restricted stock units issued and outstanding
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	2,421,767	1,710,065
Shares expected to be purchased under employee stock purchase plan
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total anti-dilutive shares	946,670	1,918,512