10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2023

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 001-37695

KINETA, INC.

(Exact name of Registrant as specified in its Charter)

Delaware	20-8436652
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
219 Terry Ave. N., Suite 300 Seattle, WA	98109
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (206) 378-0400

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.001 per share	KA	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, smaller reporting company, or an emerging growth company. See the 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 ☒

The number of shares of Registrant’s Common Stock outstanding as of November 1, 2023 was 10,393,567.

Table of Contents

		Page
	Special Note Regarding Forward-Looking Statements	1
PART I	FINANCIAL INFORMATION	3
Item 1.	Financial Statements (Unaudited)	3
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Operations	4
	Condensed Consolidated Statements of Shareholders' Equity (Deficit)	5
	Condensed Consolidated Statements of Cash Flows	7
	Notes to Unaudited Condensed Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	35
Item 4.	Controls and Procedures	35
PART II	OTHER INFORMATION	37
Item 1.	Legal Proceedings	37
Item 1A.	Risk Factors	37
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	37
Item 3.	Defaults Upon Senior Securities	37
Item 4.	Mine Safety Disclosures	37
Item 5.	Other Information	37
Item 6.	Exhibits	38
Signatures		39

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EXPLANATORY NOTE

On December 16, 2022, Yumanity Therapeutics, Inc. (“Yumanity”) completed its previously announced merger transaction with Kineta Operating, Inc. (formerly Kineta, Inc.) (“Private Kineta”) in accordance with the terms of the Agreement and Plan of Merger, dated as of June 5, 2022, as amended on December 5, 2022 (the “Merger Agreement”), by and among Yumanity, Private Kineta and Yacht Merger Sub, Inc., a wholly-owned subsidiary of Yumanity (“Merger Sub”), pursuant to which Merger Sub merged with and into Private Kineta, with Private Kineta surviving such merger as a wholly-owned subsidiary of Yumanity (the “Merger”). The surviving corporation from the Merger subsequently merged with and into Kineta Operating, LLC, with Kineta Operating, LLC being the surviving corporation. On December 16, 2022, in connection with, and prior to the completion of, the Merger, Yumanity effected a 1-for-7 reverse stock split of its common stock. Immediately following the Merger, Yumanity changed its name to “Kineta, Inc.”

Unless the context otherwise requires, references to the “Company,” “Kineta,” the “combined organization,” “we,” “our” or “us” in this Quarterly Report on Form 10-Q refer to Private Kineta and its subsidiaries prior to completion of the Merger and to Kineta, Inc. and its subsidiaries after completion of the Merger. In addition, references to “Yumanity” refer to the registrant prior to the completion of the Merger.

The Merger has been accounted for as a reverse merger and asset acquisition in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). Under this method of accounting, Private Kineta was deemed to be the accounting acquirer for financial reporting purposes. Following the Merger, the business conducted by Private Kineta became the Company’s primary business.

Except as otherwise noted, references to “common stock” in this report refer to common stock, $0.001 par value per share, of the Company.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains certain statements that constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. In some cases, you can identify these forward-looking statements by the use of terms such as “expect,” “will,” “continue,” “believe,” “estimate,” “aim,” “project,” “intend,” “should,” “is to be,” or similar expressions, and variations or negatives of these words, but the absence of these words does not mean that a statement is not forward-looking. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. These forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance, or achievements to differ materially from results expressed or implied in this Quarterly Report on Form 10-Q. The following factors, among others, could cause actual results to differ materially from those described in these forward-looking statements:

•the timing, progress and results of preclinical studies and clinical trials for our programs and product candidates, including statements regarding the timing of initiation and completion of studies or trials and related preparatory work, the period during which the results of the trials will become available and our research and development programs;

•our ability to recruit and enroll suitable patients in our clinical trials;

•the potential attributes and benefits of our product candidates;

•our ability to develop and advance product candidates into, and successfully complete, clinical studies;

•the timing, scope or likelihood of regulatory filings and approvals;

•our ability to obtain and maintain regulatory approval for our product candidates, and any related restrictions, limitations or warnings in the label of an approved product candidate;

•the implementation of our business model and our strategic plans for our business, product candidates, technology and our discovery engine;

•our commercialization, marketing and manufacturing capabilities and strategy;

•the pricing and reimbursement of our product candidates, if approved;

•the rate and degree of market acceptance of our product candidates, if approved;

•our ability to establish or maintain collaborations or strategic relationships or obtain additional funding;

•our ability to contract with and rely on third parties to assist in conducting our clinical trials and manufacturing our product candidates;

•the size and growth potential of the markets for our product candidates, and our ability to serve those markets, either alone or in partnership with others;

•our ability to obtain funding for our operations, including funding necessary to complete further development, approval and, if approved, commercialization of our product candidates;

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•the period over which we anticipate our existing cash and cash equivalents will be sufficient to fund our operating expenses and capital expenditure requirements;

•the potential for our business development efforts to maximize the potential value of our portfolio;

•our ability to compete with other companies currently marketing or engaged in the development of treatments for the indications that we are pursuing for our product candidates;

•our expectations regarding our ability to obtain and maintain intellectual property protection for our product candidates;

•our financial performance;

•our ability to retain the continued service of our key professionals and to identify, hire and retain additional qualified professionals;

•any statements of the plans, strategies and objectives of management for future operations, including the execution of integration plans and the anticipated timing of filings;

•our expectations related to the use of our cash reserves;

•our estimates regarding expenses, future revenue, capital requirements and needs for additional financing;

•our ability to remediate the material weaknesses in our internal control over financial reporting;

•the impact of laws and regulations, including without limitation recently enacted tax reform legislation;

•the impact of global economic and political developments on our business, including rising inflation and capital market disruptions, the current conflict in Ukraine and the conflict in Israel and the Gaza Strip, economic sanctions and economic slowdowns or recessions that may result from such developments, which could harm our research and development efforts as well as the value of our common stock and our ability to access capital markets;

•the effect of COVID-19 on the foregoing; and

•other risks and uncertainties, including those listed under the caption “Risk Factors” in Part II, Item 1A.

The forward-looking statements contained in this Quarterly Report on Form 10-Q and the documents incorporated herein by reference are based on our current expectations and beliefs concerning future developments and their potential effects on our business. There can be no assurance that future developments affecting our business will be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond our control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. These risks and uncertainties include, but are not limited to, those factors described under the caption “Risk Factors” in Part II, Item 1A of this Quarterly Report on Form 10-Q and under similar headings in the documents that are incorporated by reference herein. Moreover, we operate in a very competitive and rapidly changing environment.

New risks and uncertainties emerge from time to time and it is not possible for us to predict all such risk factors, nor can we assess the effect of all such risk factors on our business or the extent to which any factor or combination of factors may cause actual results to differ materially from those contained in any forward-looking statements. Should one or more of these risks or uncertainties materialize, or should any of the assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements.

The forward-looking statements made by us in this Quarterly Report on Form 10-Q and the documents incorporated herein by reference speak only as of the date of such statement. Except to the extent required under the federal securities laws and rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), we disclaim any obligation to update any forward-looking statement to reflect events or circumstances after the date on which the statement is made or to reflect the occurrence of unanticipated events. In light of these risks and uncertainties, there is no assurance that the events or results suggested by the forward-looking statements will in fact occur, and you should not place undue reliance on these forward-looking statements.

Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law, you are advised to consult any additional disclosures we make in the documents that we file with the SEC.

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PART I—FINANCIAL INFORMATION

Item 1. Financial Statements.

KINETA, INC.

Condensed Consolidated Balance Sheets

(in thousands)

(Unaudited)

	September 30,			December 31,
	2023			2022
Assets
Current assets:
Cash	$	7,562		$	13,143
Prepaid expenses and other current assets		281			457
Total current assets		7,843			13,600
Property and equipment, net		3			249
Operating right-of-use asset		664			1,211
Rights from Private Placement		2,070			2,250
Restricted cash		125			125
Total assets	$	10,705		$	17,435
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	4,333		$	6,635
Accrued expenses and other current liabilities		1,857			3,527
Deferred revenue		—			442
Notes payable, current portion		615			—
Operating lease liability, current portion		767			843
Finance lease liabilities, current portion		43			40
Total current liabilities		7,615			11,487
Notes payable, net of current portion		150			748
Operating lease liability, net of current portion		—			547
Finance lease liabilities, net of current portion		51			83
Total liabilities		7,816			12,865
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.001 par value; 125,000 shares authorized as of September 30, 2023 and December 31, 2022; 10,215 and 8,318 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively		10			8
Additional paid-in capital		165,839			156,106
Accumulated deficit		(163,135	)		(151,690	)
Total stockholders’ equity attributable to Kineta, Inc.		2,714			4,424
Noncontrolling interest		175			146
Total stockholders’ equity		2,889			4,570
Total liabilities and stockholders’ equity	$	10,705		$	17,435

See the accompanying notes to the unaudited condensed consolidated financial statements.

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KINETA, INC.

Condensed Consolidated Statements of Operations

(in thousands, except per share amounts)

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Revenues:
Collaboration revenues	$	—		$	—		$	442		$	—
Licensing revenues		—			—			5,000			965
Grant revenues		—			200			—			501
Total revenues		—			200			5,442			1,466
Operating expenses:
Research and development		1,909			2,605			7,462			10,507
General and administrative		2,077			2,046			9,432			5,480
Total operating expenses		3,986			4,651			16,894			15,987
Loss from operations		(3,986	)		(4,451	)		(11,452	)		(14,521	)
Other (expense) income:
Interest expense (with related parties $0 for the three and nine months ended September 30, 2023 and $465 and $1,366 for the three and nine months ended September 30, 2022, respectively)		(21	)		(559	)		(65	)		(1,699	)
Change in fair value of rights from Private Placement		(1,401	)		—			(180	)		—
Change in fair value measurement of notes payable		(4	)		(418	)		(17	)		(542	)
(Loss) gain on extinguishments of debt, net		—			(236	)		—			259
Other (expense) income, net		101			(3	)		298			(17	)
Total other (expense) income, net		(1,325	)		(1,216	)		36			(1,999	)
Net loss	$	(5,311	)	$	(5,667	)	$	(11,416	)	$	(16,520	)
Net (loss) income attributable to noncontrolling interest		69			(82	)		29			(81	)
Net loss attributable to Kineta, Inc.	$	(5,380	)	$	(5,585	)	$	(11,445	)	$	(16,439	)
Net loss per share, basic and diluted	$	(0.46	)	$	(1.14	)	$	(1.09	)	$	(3.42	)
Weighted-average shares outstanding, basic and diluted		11,738			4,891			10,505			4,808

See the accompanying notes to the unaudited condensed consolidated financial statements.

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KINETA, INC.

Condensed Consolidated Statements of Stockholders’ Equity (Deficit)

(in thousands)

(Unaudited)

	Common Stock				Additional Paid-In Capital		Accumulated			Total Stockholders’ Deficit Attributable			Noncontrolling			Total Stockholders’
	Shares		Amount		Amount		Deficit			to Kineta			Interest			Deficit
Balance as of January 1, 2022		4,656	$	5	$	76,137	$	(88,282	)	$	(12,140	)	$	191		$	(11,949	)
Issuance of common stock		3		—		98	—				98			—			98
Issuance of common stock upon    extinguishment of notes payable and accrued interest		9		—		235	—				235			—			235
Issuance of common stock upon    exercise of warrants		1		—		—		—			—			—			—
Stock-based compensation		—		—		285		—			285			—			285
Net loss		—		—		—		(4,976	)		(4,976	)		1			(4,975	)
Balance as of March 31, 2022		4,669	$	5	$	76,755	$	(93,258	)	$	(16,498	)	$	192		$	(16,306	)
Issuance of common stock		33		—		905		—			905			—			905
Issuance of common stock upon    extinguishment of notes payable and accrued interest		46		—		1,064		—			1,064			—			1,064
Note conversion discount		—		—		174		—			174			—			174
Issuance of common stock upon    exercise of warrants		44		—		7		—			7			—			7
Stock-based compensation		—		—		755		—			755			—			755
Net loss		—		—		—		(5,878	)		(5,878	)		—			(5,878	)
Balance as of June 30, 2022		4,792	$	5	$	79,660	$	(99,136	)	$	(19,471	)	$	192		$	(19,279	)
Issuance of common stock		20		—		553		—			553			—			553
Issuance of common stock upon    extinguishment of notes payable and accrued interest		59		—		1,622		—			1,622			—			1,622
Issuance of common stock upon cashless    exercise of stock options		10		—		—		—			—			—			—
Issuance of common stock upon    exercise of warrants		3				63		—			63			—			63
Issuance of warrants for services		—		—		62		—			62			—			62
Issuance of warrants in connection with notes payable		—		—		47		—			47			—			47
Stock-based compensation		—		—		477		—			477			—			477
Net loss		—		—		—		(5,585	)		(5,585	)		(82	)		(5,667	)
Balance as of September 30, 2022		4,884	$	5	$	82,484	$	(104,721	)	$	(22,232	)	$	110		$	(22,122	)

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	Common Stock				Additional Paid-In Capital			Accumulated			Total Shareholders’ Equity (Deficit) Attributable			Noncontrolling			Total Shareholders’
	Shares		Amount		Amount			Deficit			to Kineta			Interest			Equity (Deficit)
Balance as of January 1, 2023		8,318	$	8	$	156,106		$	(151,690	)	$	4,424		$	146		$	4,570
Issuance of common stock		127		1		751		—				752		—				752
Issuance of common stock upon   exercise of warrants		51	—			7		—				7			—			7
Issuance of common stock upon    vesting of RSUs		23	—			—		—				—			—			—
Issuance of common stock for services		12	—			41		—				41			—			41
Stock-based compensation		—		—		1,054			—			1,054			—			1,054
Net loss		—		—		—			(6,451	)		(6,451	)		(29	)		(6,480	)
Balance as of March 31, 2023		8,531	$	9	$	157,959		$	(158,141	)	$	(173	)	$	117		$	(56	)
Issuance of common stock		948		1		5,478			—			5,479		—				5,479
Issuance of common stock upon   exercise of warrants		144	—			10		—				10			—			10
Issuance of common stock upon    vesting of RSUs		109	—			(69	)	—				(69	)		—			(69	)
Stock-based compensation		—		—		1,870			—			1,870			—			1,870
Net income (loss)		—		—		—			386			386			(11	)		375
Balance as of June 30, 2023		9,732	$	10	$	165,248		$	(157,755	)	$	7,503		$	106		$	7,609
Issuance of common stock upon   exercise of warrants		432		—		3		—				3			—			3
Issuance of common stock for services		51	—			114		—				114			—			114
Stock-based compensation		—		—		474			—			474			—			474
Net loss		—		—		—			(5,380	)		(5,380	)		69			(5,311	)
Balance as of September 30, 2023		10,215	$	10	$	165,839		$	(163,135	)	$	2,714		$	175		$	2,889

See the accompanying notes to the unaudited condensed consolidated financial statements.

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KINETA, INC.

Condensed Consolidated Statements of Cash Flows

(in thousands)

(Unaudited)

	Nine Months Ended September 30,
	2023			2022
Operating activities:
Net loss	$	(11,416	)	$	(16,520	)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of rights from Private Placement		180			—
Change in fair value of notes payable		17			542
Non-cash stock-based compensation		3,398			1,517
Non-cash operating lease expense		547			489
Depreciation and amortization		5			39
Common stock issued for services		155			62
Gain on extinguishments of debt, net		—			(259	)
Non-cash interest expense		—			47
Gain on disposal of asset		(90	)		—
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		176			(2,030	)
Accounts payable		(2,302	)		5,206
Accrued expenses and other current liabilities		(1,739	)		881
Operating lease liability		(623	)		(545	)
Deferred revenue		(442	)		(965	)
Net cash used in operating activities		(12,134	)		(11,536	)
Investing activities:
Purchases of property and equipment		—			(15	)
Proceeds from sale of property and equipment		331			—
Net cash provided by (used in) investing activities		331			(15	)
Financing activities:
Proceeds from private placement		5,479			—
Proceeds from notes payable		—			5,620
Proceeds from issuance of common stock		752			1,556
Proceeds from exercise of warrants		20			70
Repayments of notes payable		—			(4,000	)
Repayments of finance lease liabilities		(29	)		(29	)
Net cash provided by financing activities		6,222			3,217
Net change in cash and restricted cash		(5,581	)		(8,334	)
Cash and restricted cash at beginning of year		13,268			11,219
Cash and restricted cash at end of year	$	7,687		$	2,885
Components of cash and restricted cash:
Cash	$	7,562		$	2,810
Restricted cash		125			75
Total cash and restricted cash	$	7,687		$	2,885
Supplemental disclosure of cash flow information:
Cash paid for interest	$	36		$	1,007
Supplemental disclosure of noncash investing and financing activities:
Issuance of common stock upon extinguishment of notes payable and accrued interest	$	—		$	3,095
Withholding to cover taxes from RSU vesting	$	69		$	—
Finance lease liabilities arising from obtaining new right-of-use assets	$	—		$	41
Issuance of warrants to purchase common stock in connection with notes payable	$	—		$	47

See the accompanying notes to the unaudited condensed consolidated financial statements.

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KINETA, INC.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1.Organization and Liquidity

Description of Business

Kineta, Inc. (formerly Yumanity Therapeutics, Inc.) (together with its subsidiaries, the “Company”) is headquartered in Seattle, Washington.

The Company is a clinical-stage biotechnology company focused on developing new innovative therapies in the field of immuno-oncology and cancer. The Company also has drug programs in neurology (chronic pain) and an antiviral drug program in development for arenaviruses such as Lassa fever. Kineta Chronic Pain, LLC (“KCP”) was formed to develop new innovative therapies for pain management. Kineta Viral Hemorrhagic Fever, LLC (“KVHF”) was formed to develop a direct acting anti-viral therapy for the treatment of emerging diseases.

As of September 30, 2023 and December 31, 2022, the Company owns a majority interest of the outstanding issued equity of KCP and all of the outstanding issued equity of KVHF.

Private Placement

In connection and concurrently with the execution of the Merger Agreement, the Company entered into a financing agreement, dated as of June 5, 2022, as amended on October 24, 2022, December 5, 2022, March 29, 2023, May 1, 2023, July 21, 2023 and October 13, 2023 (such financing agreement, as amended, the “Securities Purchase Agreement”), to sell shares of the Company’s common stock in a private placement (the “Private Placement”). The first closing of the Private Placement occurred on December 16, 2022, and the Company issued 649,346 shares of its common stock and received net proceeds of $7.4 million. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024. The Company has the ability to unilaterally terminate the Securities Purchase Agreement until the date of the second closing.

Liquidity

The Company has incurred recurring net losses and negative cash flows from operations since inception and, as of September 30, 2023, had an accumulated deficit of $163.1 million. The net loss attributable to the Company was $5.3 million for the three months ended September 30, 2023 and $11.4 million for the nine months ended September 30, 2023. As of September 30, 2023, the Company had unrestricted cash of $7.6 million. The Company’s cash as of September 30, 2023, together with the $2.7 million net proceeds received in October 2023 from the registered direct offering plus the committed proceeds of $22.5 million pursuant to the second closing of the Private Placement, will be sufficient to fund operating expenses and capital expenditure requirements into early 2025.

The Company will need to raise additional capital to support its long-term plans and to complete clinical trials. The Company intends to raise additional debt and equity financings from its current investors as well as prospective investors and may receive milestone payments from its license agreements, or other sources. However, there is no guarantee that any of these additional financings or opportunities will be executed or realized on acceptable terms, if at all. The Company’s ability to raise additional capital through either the issuance of equity or debt is dependent on a number of factors including, but not limited to, Company prospects, which itself is subject to a number of development and business risks and uncertainties, as well as uncertainty about whether the Company would be able to raise such additional capital at a price or on terms that are acceptable.

Geopolitical Developments

Geopolitical developments, such as the Russian invasion of Ukraine or deterioration in the bilateral relationship between the United States and China, may impact government spending, international trade and market stability, and cause weaker macro-economic conditions. The impact of these developments, including any resulting sanctions, export controls or other restrictive actions that may be imposed against governmental or other entities in, for example, Russia, have in the past contributed and may in the future contribute to disruption, instability and volatility in the global markets, which in turn could adversely impact the Company’s operations and weaken the Company’s financial results. Certain political developments may also lead to uncertainty to regulations and rules that may materially affect the Company’s business.

2.Summary of Significant Accounting Policies

Unaudited Interim Financial Information

The unaudited condensed consolidated balance sheet as of December 31, 2022 was derived from the Company’s audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”). The accompanying unaudited condensed consolidated financial statements, as of September 30, 2023 and for the three and nine months ended September 30, 2023, are unaudited and have been prepared by the Company pursuant to the rules and regulations of the SEC for interim financial

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statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. The Company believes that the disclosures are adequate to make the information presented not misleading. There have been no changes to the Company’s significant accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on March 31, 2023 (the “2022 Annual Report on Form 10-K”). These unaudited condensed financial statements should be read in conjunction with the Company’s audited financial statements and the notes thereto for the year ended December 31, 2022 included in the 2022 Annual Report on Form 10-K. In the opinion of management, all adjustments, consisting only of normal recurring adjustments necessary for a fair statement of the Company’s condensed consolidated financial position as of September 30, 2023 and condensed consolidated results of operations and cash flows for the three and nine months ended September 30, 2023 and 2022 have been made. The results of operations for the three and nine months ended September 30, 2023 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2023.

Basis of Presentation and Consolidation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. GAAP and applicable SEC rules. The condensed consolidated financial statements include all accounts of the Company, its majority owned subsidiary KCP, and its wholly owned subsidiary, KVHF. All intercompany transactions and balances have been eliminated upon consolidation.

Noncontrolling interest in the accompanying condensed consolidated financial statements represents the proportionate share of equity which is not held by the Company. Net income (loss) of the non-wholly owned consolidated subsidiary is allocated to the Company and the holder(s) of the noncontrolling interests in proportion to their percentage ownership considering any preferences specific to the form of equity of the subsidiaries.

Revenue Recognition

Collaboration Revenues

In connection with the Merger, the Company became the successor in interest to an exclusive license and research collaboration agreement (the “Merck Neuromuscular License Agreement”) with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis. The Company recognizes revenue using the cost-to-cost method, which it believes best depicts the transfer of control to the customer. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of actual costs incurred to the total estimated costs expected upon satisfying the identified performance obligation. Under this method, revenue is recognized as a percentage of actual cost incurred to the estimated costs to complete. The Company recognized collaboration revenues of zero for the three months ended September 30, 2023 and $442,000 for the nine months ended September 30, 2023. As of June 30, 2023, the Company completed its project services under the Merck Neuromuscular License Agreement.

License Revenues

In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. Revenue from such milestones is recognized when the accomplishment of the milestone is deemed probable. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. As a result, the Company is eligible to receive up to an additional $255.0 million in development milestones, sales milestones and royalties on net sales. The Company recognized licensing revenues of zero for the three months ended September 30, 2023 and $5.0 million for the nine months ended September 30, 2023 under the Merck Neuromuscular License Agreement and has no further obligations under the Merck Neuromuscular License Agreement.

Net loss per share

Basic net loss per common share is computed by dividing the net loss by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per common share is computed by dividing net loss by the weighted average number of common shares outstanding for the period, including potential dilutive common shares assuming the dilutive effect of outstanding common share equivalents. Diluted net loss per share is the same as basic net loss per share, since the effects of potentially dilutive securities are antidilutive given the net loss for each period presented. In computing basic net loss per share, nominal issuances of common stock, including warrants to purchase the Company’s common stock with an exercise price of $0.14 per share, are reflected in basic net loss per share for all periods, even if antidilutive.

3.Fair Value Measurements

The carrying amounts of the Company’s financial instruments, including cash, restricted cash, and accounts payable, approximate fair value due to the short-term nature of those instruments.

Rights from Private Placement

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The Company determined that the rights from Private Placement is a derivative asset, which requires the asset to be accounted for at fair value. The fair value was determined using a Monte Carlo simulation based on the contractual funding date of July 25, 2023, minimum purchase price of $3.18 and historical stock prices. The significant unobservable inputs used in the fair value measurement as of September 30, 2023 were as follows: volatility of 86%, risk-free interest rate of 5.40% and funding probability of 75%, which resulted in a loss in fair value of $1.4 million for the three months ended September 30, 2023 and a loss of $0.2 million for the nine months ended September 30, 2023, which is recorded in other income (expense) in the Statement of Operations. The fair value measurement as of September 30, 2023 was approximately $2.1 million.

The following table provides a summary of the changes in the fair value of the rights from Private Placement measured using Level 3 inputs:

	Nine Months Ended September 30,
	2023			2022
	(in thousands)
Balance at beginning of period	$	2,250		$	—
Change in fair value of rights from Private Placement		(180	)		—
Balance at end of period	$	2,070		$	—

2022 & 2020 Notes Payable

The Company elected the fair value option to account for certain convertible notes payable and notes payable, referred to as the 2022 convertible notes, 2020 convertible notes and 2020 notes (see Note 5), respectively, and collectively the 2022 & 2020 notes payable. The 2020 convertible notes and 2020 notes are referred to as the 2020 notes payable. Upon the closing of the Merger in December 2022, the 2022 convertible notes and 2020 convertible notes were settled with shares of the Company’s common stock (see Note 5).

2020 Notes

The 2020 notes were valued using a discounted cash flow model based on the contractual payment dates, a discount rate and the contractual maturity date. The significant unobservable inputs used in the fair value measurement of the 2020 note for the three months ended September 30, 2023 were as follows: discount rate of 14.0% and contractual payment date of 0.8 year, which resulted in a fair value for the 2020 note of $236,000.

The significant unobservable inputs used in the fair value measurement of the 2020 notes for the three months ended September 30, 2022 were as follows: discount rate ranging from 11.3% to 11.7% and contractual payment dates ranging from 0.1 years to 2.4 years, which resulted in a fair value of the 2020 notes ranging from $1.6 million to $2.9 million.

2020 Convertible Notes

The 2020 convertible notes were valued using a scenario-based analysis and a discounted cash flow model. Two primary scenarios were considered: the qualified financing scenario and the repayment scenario. The value of the 2020 convertible notes under each scenario was probability weighted to arrive at the estimated fair value for the notes. The qualified financing scenario considers the value impact of conversion at the stated discount to the

issue price if the Company completes a qualifying financing event before the maturity date. The repayment scenario considers payment of principal at the contractual maturity dates.

There were no 2020 convertible notes as of September 30, 2023 as they were converted upon the closing of the Merger. The significant unobservable inputs used in the fair value measurement of the 2020 convertible notes for the three months ended September 30, 2022 were as follows: discount rate ranging from 11.3% to 41.2%, timing of the qualified financing ranging from 0.2 years to 0.75 years, timing of the repayment scenarios based on contractual maturity dates ranging from 0.25 years to 1.25 years, probability of a qualified financing ranging from 80% to 90% and probability of repayment ranging from 10% to 20%, which resulted in a fair value range for the 2020 convertible notes of $11.3 million to $16.2 million.

2022 Convertible Notes

The 2022 convertible notes were valued using a scenario-based analysis and a discounted cash flow model. Two primary scenarios were considered: the qualified financing scenario and the automatic conversion scenario. The value of the 2022 convertible notes under each scenario was probability weighted to arrive at the estimated fair value for the notes. The qualified financing scenario considers the value impact of conversion at the stated discount to the issue price if the Company completes a qualifying financing event before the maturity date. The automatic conversion scenario estimates the timing of such conversion.

There were no 2022 convertible notes as of September 30, 2023 as they were converted upon the closing of the Merger. The significant unobservable inputs used in the fair value measurement of the 2022 convertible notes for the three months ended September 30, 2022 were as follows: discount rate ranging from 33.6% to 41.2%, timing of the qualified financing ranging from 0.2 years to 0.6 years, timing of the automatic conversion scenario ranging from 0.4 years to 1.0 year, probability of a qualified financing ranging from 80% to 90% and probability of automatic conversion ranging from 10% to 20%, which resulted in a fair value of these 2022 convertible notes ranging from $4.8 million to $5.3 million.

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The following table provides a summary of the changes in the fair value of the Company’s 2022 & 2020 notes payable measured using Level 3 inputs:

	Nine Months Ended September 30,
	2023		2022
	(in thousands)
Balance at beginning of period	$	219	$	17,830
Issuance of 2022 convertible notes		—		5,620
Change in fair value of 2022 & 2020 notes payable		17		542
Partial settlement of 2020 notes payable		—		(5,973	)
Balance at end of period	$	236	$	18,019

4.Balance Sheet Components

Property and Equipment, Net

Property and equipment, net consisted of the following:

	September 30, 2023		December 31, 2022
	(in thousands)
Laboratory equipment	$	—	$	779
Computer and software		67		73
Leasehold improvements		14		14
Total property and equipment		81		866
Less: Accumulated depreciation and amortization		78		617
Total property and equipment, net	$	3	$	249

Depreciation and amortization expense was $1,000 for the three months ended September 30, 2023 and $5,000 for the nine months ended September 30, 2023. Depreciation and amortization expense was $15,000 for the three months ended September 30, 2022 and $39,000 for the nine months ended September 30, 2022. The Company has acquired certain laboratory equipment under agreements that are classified as finance leases. The carrying value of the equipment under finance leases included in the balance sheet as property and equipment was zero as of September 30, 2023 and $125,000 as of December 31, 2022, net of accumulated depreciation. During the three months ended September 30, 2023, the Company disposed of assets with a net carrying value of $29,000 and received proceeds of $28,000. During the nine months ended September 30, 2023, the Company disposed of assets with a net carrying value of $241,000 and received proceeds of $331,000.The Company recorded a gain on disposal of fixed assets, which is recorded in other income (expense) in the Statement of Operations.

Rights from Private Placement

In connection and concurrently with the execution of the Merger Agreement, the Company entered into the Securities Purchase Agreement to sell shares of the Company’s common stock in the Private Placement. The first closing of the Private Placement occurred on December 16, 2022, and the Company issued 649,346 shares of its common stock and received net proceeds of $7.4 million. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024. With respect to the second closing, the Company is obligated to sell and issue a number of shares of its common stock and the investors are obligated to buy such shares by the specified date and price equal to the volume-weighted average price of Company common stock for the five trading days prior to April 15, 2024 (“VWAP”) plus 10% of the VWAP; provided, however, that the share purchase price shall be at least equal to the closing price of the Company’s common stock on March 29, 2023. The Company has recorded a $2.1 million rights from Private Placement asset as of September 30, 2023 for the future right associated with the second closing.

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Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following as of the periods presented:

	September 30, 2023		December 31, 2022
	(in thousands)
Compensation and benefits	$	980	$	745
Accrued clinical trial and preclinical costs		304		404
Accrued interest		158		132
Professional services		64		2,176
Other		351		70
Total accrued expenses and other current liabilities	$	1,857	$	3,527

5.Notes Payable

Notes payable outstanding consisted of the following as of the periods presented:

	September 30, 2023				December 31, 2022
	Principal		Fair Value		Principal		Fair Value
	(in thousands)
Notes payable:
2020 notes	$	250	$	236	$	250	$	219
Other notes payable		379		379		379		379
Small Business Administration loan		150		150		150		150
Total notes payable	$	779		765	$	779		748
Less: current portion				615				—
Notes payable, net of current portion			$	150			$	748

The Company elected the fair value option for the 2020 notes (see Note 3). The other notes payable and Small Business Administration loan approximate their fair value because interest rates are at prevailing market rates.

Expected future minimum principal payments under the Company’s notes payables as of September 30, 2023 were as follows:

	Total
	(in thousands)
Years
Remainder of 2023	$	—
2024		629
2025		0
2026		0
2027		2
Thereafter		148
Total notes payable	$	779
Less: current portion		615
Notes payable, net of current portion	$	164

2020 Notes

In October 2020, the Company refinanced certain notes payable (the “2020 notes”), with an aggregate principal amount of $3.0 million with various investors, including one investor that is a related party (see Note 14). The interest rate was reduced on the 2020 notes from 16.0% to 6.0% from October 2020 until the earlier of (i) the Company raises at least $25.0 million in a single transaction or series of transactions after October 2020 and (ii) the original maturity dates (that is, various dates in the first quarter of 2022), after which the interest rate increases to 16.0%. The outstanding principal is due upon demand of the majority of the lenders with respect to (i) 50% on or after nine months after the original maturity date (or on or after various dates in the fourth quarter of 2022) and (ii) 50% on or after fifteen months after the original maturity date (or on or after various dates in the second quarter of 2023). The Company may repay the 2020 notes at any time without penalty. Upon bankruptcy the lender can accelerate all amounts due immediately.

In August 2022, the Company settled $1.4 million in outstanding principal and accrued interest by issuing 59,000 shares of the Company’s non-voting common stock at a 15% discount. The Company extended the maturity date for the remaining 2020 note with a principal balance of $250,000

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to July 31, 2024 and reduced the interest rate to 6%, which was accounted for as a modification. As the 2020 notes were valued pursuant to the fair value election, an immaterial gain was recognized upon extinguishment.

Other Notes Payable

The Company issued several other notes payable in 2019 and early 2020 at a 12.0% interest rate per annum, with the principal amounts due in full at maturity and interest due monthly or quarterly. The other notes payable were due to mature at various dates between December 2020 through early 2022.

The other notes payable were amended in October 2020 to increase the interest rate to 13.0% and extend the maturity date to be on demand by a majority of the holders on or after April 7, 2022, which resulted in a modification of the other notes payable. The Company may prepay the other notes payable at any time without penalty. In April 2022, the Company extended the maturity date for the remaining other notes payable with a principal balance of $379,000 to June 30, 2024 and decreased the interest rate to 6.0% interest, which was accounted for as a modification. As the other notes payable approximated their fair value, no gain or loss was recognized upon extinguishment.

Small Business Administration Loan

In August 2020, the Company received a U.S. Small Business Administration loan of $150,000 at a 3.75% interest rate and maturing in August 2050. Repayments of principal are due monthly beginning in June 2027 and interest is due monthly.

6.Commitments and Contingencies

Leases

Operating Lease

The Company leases office and laboratory premises in Seattle, Washington pursuant to a lease agreement that commenced in April 2011 and expires in July 2024. The agreement requires monthly lease payments, is subject to annual rent escalations during the lease term, and contains two five-year options to extend the lease term. In June 2020, the Company amended the lease agreement to reduce the leased space for the premises from approximately 22,064 square feet to approximately 14,870 square feet, which was accounted for as a lease modification and partial termination of the lease.

Under the lease agreement, the Company is required to pay certain operating costs, in addition to rent, such as common area maintenance, taxes and utilities. Such additional charges are considered variable lease costs and are recognized in the period in which they are incurred. Rent expense was $208,000 for the three months ended September 30, 2023 and variable costs were $137,000. Rent expense was $658,000 for the nine months ended September 30, 2023 and variable costs were $447,000. Rent expense was $208,000 for the three months ended September 30, 2022 and variable costs were $124,000. Rent expense was $624,000 for the nine months ended September 30, 2022 and variable costs were $386,000.

The Company’s operating leases include various covenants, indemnities, defaults, termination rights, security deposits and other provisions customary for lease transactions of this nature.

Future undiscounted payments due under the operating lease as of September 30, 2023 were as follows:

Years	(in thousands)
Remainder of 2023	$	235
2024		561
Total undiscounted lease payments		796
Less: Imputed interest		(29	)
Operating lease liability		767
Less: Operating lease liability, current portion		(767	)
Operating lease liability, net of current portion	$	—

Supplemental information on the Company’s operating leases was as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Cash paid for operating lease agreement (in thousands)	$	235		$	228		$	701		$	681
Remaining lease term (in years)		0.8			1.8			0.8			1.8
Incremental borrowing rate		10	%		10	%		10	%		10	%

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The Company subleases portions of its premises in Seattle, Washington to third parties. Under the first sublease agreement, which commenced in December 2017, the Company subleases approximately 1,850 square feet. In October 2020 the sublease expiration date was extended from December 2020 to December 2022. In September 2022, the sublease expiration date was extended from December 2022 to December 2023. Under the second sublease agreement, which commenced in January 2019 and expired in June 2020, the Company subleased approximately 7,194 square feet. Sublease income is recorded within operating expenses and was $49,000 for the three months ended September 30, 2023 and $146,000 for the nine months ended September 30, 2023. Sublease income was $47,000 for the three months ended September 30, 2022 and $141,000 for the nine months ended September 30, 2022. As of September 30, 2023, the total minimum rentals to be received under the remaining noncancelable sublease was $30,000.

Finance Leases

Future undiscounted payments due under finance lease liabilities as of September 30, 2023 were as follows:

Years	(in thousands)
Remainder of 2023	$	12
2024		50
2025		32
2026		10
Total undiscounted lease payments		104
Less: Imputed interest		(10	)
Financing lease liabilities		94
Less: Financing lease liabilities, current portion		(43	)
Financing lease liabilities, net of current portion	$	51

Supplemental information on the Company’s financing leases was as follows (cash paid for finance lease agreements was not material):

	September 30, 2023			December 31, 2022
Weighted average remaining lease term (in years)		2.3			3.2
Incremental borrowing rate		9.3	%		9.3	%

Indemnification

In the ordinary course of business, the Company enters into agreements that may include indemnification provisions. Pursuant to such agreements, the Company may indemnify, hold harmless and defend an indemnified party for losses suffered or incurred by the indemnified party. Some of the provisions will limit losses to those arising from third-party actions. In some cases, the indemnification will continue after the termination of the agreement. The maximum potential amount of future payments the Company could be required to make under these provisions is not determinable. The Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification provisions. The Company has also entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers to the fullest extent permitted under the Delaware General Corporation Law. The Company currently has directors’ and officers’ insurance.

Other Commitments

The Company has various manufacturing, clinical, research and other contracts with vendors in the conduct of the normal course of its business. Such contracts are generally terminable with advanced written notice and payment for any products or services received by the Company through the effective time of termination and any noncancelable and nonrefundable obligations incurred by the vendor at the effective time of the termination. In the case of terminating a clinical trial agreement at a particular site, the Company would also be obligated to provide continued support for appropriate medical procedures at that site until completion or termination.

Executive Employment Agreements

On September 20, 2022, the Company entered into an at-will employment agreement (“Baker Employment Agreement”), which became effective on October 3, 2022, with Keith Baker, its Chief Financial Officer. On September 28, 2022, the Company entered into at-will employment agreements (together with the Baker Employment Agreement, the “Executive Employment Agreements”), which became effective on December 16, 2022 upon the closing of the Merger, with Shawn Iadonato, its Chief Executive Officer, Craig Philips, its President and Pauline Kenny, its General Counsel. On April 23, 2023, the Company’s board of directors (the “Board”) approved salary increases effective at the next payroll period and bonus increases for fiscal year 2023 to Shawn Iadonato, Craig Philips, Keith Baker, and Pauline Kenny.

The Executive Employment Agreements provide that, if the executive’s employment is terminated without Cause (as defined in the Executive Employment Agreements) or the executive resigns for Good Reason (as defined in the Executive Employment Agreements), provided that the executive signs the Release (as defined in the Executive Employment Agreement), the executive will be entitled to (i) accrued compensation, (ii) 39 weeks of pay (52 weeks in the case of Chief Executive Officer) (currently estimated at approximately $1.3 million in the aggregate), (iii) nine (9) months of COBRA benefits (12 months in the case of Chief Executive Officer) for executive and eligible dependents, and (iv) three (3) additional months of vesting of unvested and outstanding equity awards. If executive’s employment is terminated without Cause or the executive resigns for

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Good Reason within the Change in Control Protection Period (as defined in the Executive Employment Agreements), then in addition to (i)-(iv) above, executive will receive current year pro-rated cash bonus.

7.Strategic License Agreements

Anti-VISTA Antibody Program License Agreement

In connection with the Company’s research into innovative immuno-oncology drug targets, the Company acquired rights to a group of fully human antibodies from Gigagen, Inc., a wholly owned subsidiary of Grifols, S.A. (“Gigagen”). Pursuant to a material transfer agreement with Gigagen dated August 2019 (the “2019 MTA”), the Company performed research activities to assess Gigagen’s anti-VISTA antibodies. Under an option and license agreement effective as of August 10, 2020, as amended in November 2020, and as further amended in May 2023, the parties agreed to terminate the 2019 MTA and Gigagen granted the Company a research license to continue additional evaluation of certain anti-VISTA antibodies. Gigagen also granted the Company an exclusive option to obtain an exclusive license to develop, manufacture and commercialize certain anti-VISTA antibodies during the option term commencing on the effective date and ended on December 31, 2020. The option and license agreement provides for a payment to Gigagen of $0.2 million within five days after the effective date. In addition, upon the Company’s exercise of its option during the option term, within 60 days after such date the Company is obligated to, among other things, (i) pay Gigagen an upfront option exercise fee of $0.4 million, and (ii) issue Gigagen non-voting common stock of the Company having an aggregate then-current fair market value of $0.25 million. The Company is also obligated to pay Gigagen (i) development and regulatory milestones of less than $21 million based on achievement of certain predetermined milestones, (ii) sales milestones up to an aggregate of $11.0 million based on net sales thresholds, and (iii) royalties in the low-single digits on net sales for each licensed product sold by the Company during the term of the agreement. The Company accounted for the acquisition of rights as an asset acquisition because it did not meet the definition of a business. The Company recorded the upfront payment to Gigagen as research and development expense in the consolidated statements of operations because the acquired rights represented in-process research and development that have no alternative future use. From inception of the 2019 MTA through September 30, 2023, the Company has incurred $500,000 in milestone expense and zero in royalties under the 2019 MTA.

Anti-CD27 Agonist Antibody Program License Agreement

In connection with the Company’s research into innovative immuno-oncology drug targets, the Company acquired rights to a group of fully human antibodies from Gigagen directed to CD27. Pursuant to a material transfer agreement with Gigagen dated October 28, 2020, as amended in April 2021 (the “2020 MTA”), the Company performed research activities to assess Gigagen’s anti-CD27 agonist antibodies. Under an option and license agreement effective as of June 9, 2021, as amended in August 2022, as further amended in December 2022, and as further amended in May 2023, the parties agreed to terminate the 2020 MTA, Gigagen granted the Company a research license to continue additional evaluation of certain anti-CD27 agonist antibodies and also granted the Company an exclusive option to obtain an exclusive license to develop, manufacture and commercialize certain antibodies targeting CD27 during the option term commencing on the effective date and ending on December 31, 2022. The option and license agreement provides for the Company to pay Gigagen (i) an insignificant exclusivity payment within 60 days after the effective date, and (ii) an insignificant evaluation payment due by March 16, 2022. In addition, upon the Company’s exercise of its option, within 60 days after such option exercise date, the Company is obligated to, among other things, (i) pay Gigagen an upfront option exercise fee of $0.1 million, and (ii) issue Gigagen non-voting common stock of the Company having an aggregate then-current fair market value of $0.25 million. The Company is also obligated to pay Gigagen (i) development and regulatory milestones of less than $21 million based on achievement of certain predetermined milestones, (ii) sales milestones up to an aggregate of $11.0 million based on net sales thresholds, and (iii) royalties in the low-single digits on net sales for each licensed product sold by the Company during the term of the agreement.

The Company accounted for the acquisition of rights as an asset acquisition because it did not meet the definition of a business. From inception of the 2020 MTA through September 30, 2023, none of the milestones have been achieved and no royalties were due under the agreement.

8.Stockholders’ Equity

Warrants to Purchase Common Stock

As of September 30, 2023, the Company had issued and outstanding warrants to purchase shares of the Company’s common stock as follows, which all met the condition for equity classification (in thousands):

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Year Issued	Expiration Date	Number Outstanding as of December 31, 2022		Issued		Exercised			Cancelled/Expired			Number Outstanding as of September 30, 2023		Range of Exercise Price
2013			12		—		—			(12	)		—
2017	November 2023 - June 2025		131		—		—			—			131	$0.14 - $21.80
2019	March 2025 - April 2027		44		—		—			—			44	$0.14 - $21.80
2020	October 2023		45		—		(1	)		(4	)		40	$	0.14
2022	August 2025 - December 2029		301		—		(149	)		—			152	$0.14 - $168.35
2023	April 2028 - October 2028		—		1,973		(477	)		—			1,496	$4.08 - $5.26
Total number of shares    underlying warrants			533		1,973		(627	)		(16	)		1,863

Equity Raises - Registered Direct Offering

April 2023

On April 20, 2023, the Company entered into a Securities Purchase Agreement (the “April 2023 Purchase Agreement”) with an institutional investor (the “April 2023 Investor”), pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of The Nasdaq Stock Market LLC (“Nasdaq”) (such offering, the “April 2023 Registered Offering”), (i) an aggregate of 948,000 shares of its common stock, at a purchase price of $4.21 per share and (ii) pre-funded warrants exercisable for up to 477,179 shares of its common stock (the “April 2023 Pre-Funded Warrants”) to the April 2023 Investor at a purchase price of $4.209 per April 2023 Pre-Funded Warrant, for aggregate gross proceeds from the April 2023 Registered Offering of approximately $6.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each April 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The April 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the April 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “April 2023 Private Placement” and, together with the April 2023 Registered Offering, the “April 2023 Offering”), the Company issued to the April 2023 Investor warrants to purchase up to 1,425,179 shares of common stock (the “April 2023 Common Warrants”) at an exercise price of $4.08 per share. The April 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the April 2023 Offering, the Company entered into an engagement letter with H.C. Wainwright & Co., LLC (“Wainwright”), pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the April 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $420,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $520,000, which resulted in net proceeds to the Company of $5.5 million. On April 24, 2023, the Company also issued to Wainwright or its designees warrants to purchase 71,259 shares of common stock (the “April 2023 Wainwright Warrants”). The April 2023 Wainwright Warrants have a term of five years from the commencement of sales in the April 2023 Offering, and have an exercise price of $5.2625 per share.

October 2023

On October 3, 2023, the Company, entered into a Securities Purchase Agreement (the “October 2023 Purchase Agreement”) with an institutional investor (the “October 2023 Investor”) pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of Nasdaq (such offering, the “October 2023 Registered Offering”), (i) an aggregate of 110,000 shares of its common stock, at a purchase price of $3.37 per share, and (ii) pre-funded warrants exercisable for up to 780,208 shares of its common stock (the “October 2023 Pre-Funded Warrants”) to the October 2023 Investor at a purchase price of $3.369 per October 2023 Pre-Funded Warrant, for aggregate gross proceeds from the October 2023 Registered Offering of approximately $3.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each October 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The October 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the October 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “October 2023 Private Placement” and, together with the October 2023 Registered Offering, the “October 2023 Offering”), the Company issued to the October 2023 Investor warrants to purchase up to 890,208 shares of common stock (the “October 2023

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Common Warrants”) at an exercise price of $3.25 per share. The October 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the October 2023 Offering, the Company entered into an engagement letter with Wainwright, pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the October 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $210,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $310,000, which resulted in net proceeds to the Company of $2.7 million. On October 5, 2023, the Company also issued to Wainwright or its designees warrants to purchase 44,510 shares of common stock (the “October 2023 Wainwright Warrants”). The October 2023 Wainwright Warrants have a term of five years from the commencement of sales in the October 2023 Offering, and have an exercise price of $4.2125 per share.

Warrant Exercises

During the three months ended September 30, 2023, the Company issued 432,000 shares of its common stock upon exercise of warrants and received proceeds of $3,000. During the nine months ended September 30, 2023, the Company issued 627,000 shares of its common stock upon exercise of warrants and received proceeds of $20,000. The exercise price of all shares exercised during the nine months ended September 30, 2023 ranged from $0.001 to $0.14.

As of September 30, 2022, the Company had issued and outstanding warrants to purchase shares of the Company’s common stock as follows, which all met the condition for equity classification (in thousands):

Year Issued	Expiration Date	Number Outstanding as of December 31, 2021		Issued		Exercised			Cancelled/Expired			Number Outstanding as of September 30, 2022		Range of Exercise Price
2013	April 2023		12		—		—			—			12	$	10.17
2017	December 2022 - June 2025		203		—		(20	)		(35	)		148	$0.14 - $23.25
2019	October 2022 - April 2027		50		—		(5	)		(1	)		44	$0.14 - $21.80
2020	February 2023 - October 2023		73		—		(23	)		—			50	$0.14 - $26.88
2022	August 2025 - September 2025		—		4		—			—			4	$	0.14
Total number of shares    underlying warrants			338		4		(48	)		(36	)		258

During the three months ended September 30, 2022, the Company issued 3,000 shares of its common stock upon exercise of warrants and received proceeds of $63,000. During the nine months ended September 30, 2022, the Company issued 48,000 shares of its common stock upon exercise of warrants and received proceeds of $70,000. The exercise price of all shares exercised during the nine months ended September 30, 2022 ranged from $0.14 to $26.88.

Common Stock

As of September 30, 2023, there were 10,214,945 shares of common stock issued and outstanding.

Common stock reserved for future issuance consisted of the following as the period presented:

	September 30, 2023
	(in thousands)
Shares reserved for stock options and restricted stock units to purchase    common stock under equity incentive plans		2,020
Shares reserved for future issuance of equity awards		932
Shares reserved for exercise of warrants		1,863
Total		4,815

During the three months ended September 30, 2023, the Company issued 51,000 shares of its common stock for professional services and recorded $114,000 as consulting expense within general and administrative expense.

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During the nine months ended September 30, 2023, the Company sold 126,503 shares of its common stock to individual investors under the Sales Agreement (as defined below) and received net proceeds of $0.8 million in connection with the ATM (as defined below) equity offering program.

During the nine months ended September 30, 2023, the Company issued 63,000 shares of its common stock for professional services and recorded $155,000 as consulting expense within general and administrative expense.

During the three months ended September 30, 2023, the Company issued 432,000 shares of its common stock upon exercise of warrants and received proceeds of $3,000. During the nine months ended September 30, 2023, the Company issued 627,000 shares of its common stock upon exercise of warrants and received proceeds of $20,000. The exercise price of all shares exercised ranged from $0.001 to $0.14.

During the nine months ended September 30, 2023, the Company issued 132,000 shares of its common stock upon vesting of restricted stock units. 100,000 shares were issued to members of the Company’s executive management, 10,000 shares were issued to directors of the Company and 22,000 were issued to employees, former employees and former Board members.

During the three months ended September 30, 2022, the Company sold 20,000 shares of its common stock to individual investors and received net proceeds of $553,000. During the nine months ended September 30, 2022, the Company sold 56,000 shares of its common stock to individual investors and received net proceeds of $1.6 million.

During the three months ended September 30, 2022, outstanding principal and accrued interest under the other notes payable of $1.6 million was settled by issuing 59,000 shares of the Company’s common stock at fair value (based on a recent valuation) to the holders. During the nine months ended September 30, 2022, outstanding principal and accrued interest under the other notes payable of $2.9 million was settled by issuing 114,000 shares of the Company’s common stock at fair value (based on a recent valuation) to the holders.

During the three months ended September 30, 2022, the Company issued 3,000 shares of its common stock upon exercise of warrants and received proceeds of $63,000. During the nine months ended September 30, 2022, the Company issued 48,000 shares of its common stock upon exercise of warrants and received proceeds of $70,000. The exercise price of all shares exercised ranged from $0.14 to $26.88.

Private Placement

The Private Placement (see Note 1) provides for the issuance of shares of the Company’s common stock in two closings, one of which occurred immediately following the closing of the Merger and one of which is expected to occur on April 15, 2024. The first closing of the Private Placement occurred on December 16, 2022 and the Company issued 649,346 shares of its common stock and received net proceeds of $7.4 million to investors that are related parties.

In connection with the Private Placement in December 2022, the Company issued 104,000 warrants to purchase shares of the Company’s non-voting common stock to investors in the Private Placement, each at an exercise price of $0.14, with exercise contingent upon the Merger closing and exercisable following the first closing of the Private Placement. The Company determined the contingent exercise provisions were indexed to the Company’s operations and the warrants qualified for equity classification.

The second closing of the Private Placement is expected to occur on April 15, 2024, at which time the Company will be obligated to issue a number of shares of its common stock based on the aggregate purchase price of $22.5 million divided by the purchase price equal to (a) the VWAP, plus (b) 10% of the VWAP; provided, however, that the share purchase price shall be at least equal to the closing price of the Company’s common stock on March 29, 2023. The Company determined that its obligation to issue additional shares of its common stock in the second closing at a premium to the VWAP was a freestanding financial instrument and a future right, which is subject to fair value. Accordingly, at inception the future right was recorded as an other asset in the Company’s consolidated balance sheet at its fair value equal to 10% of the second closing amount, or $2.3 million. The remaining proceeds from the first closing were allocated to the shares of common stock issued in the first closing and to the warrants as such instruments are equity-classified. The future right is subject to remeasurement at each reporting date and the Company has used the Monte Carlo simulation method to determine fair value of approximately $2.1 million as of September 30, 2023. The Company incurred insignificant issuance costs related to the Private Placement.

9.Collaboration Agreement

The following table shows the activity for the Company’s collaboration revenue agreement and deferred revenue (in thousands):

	September 30,
	2023			2022
	(in thousands)
Balance as of beginning of period	$	442		$	—
Decrease for provision of research services		(442	)		—
Balance as of end of period	$	—		$	—

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Merck

In connection with the Merger, the Company became the successor in interest to the Merck Neuromuscular License Agreement with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis (“ALS”). As of December 31, 2022, the Company had $442,000 in deferred revenue under the Merck Neuromuscular License Agreement. The Company recognized zero in revenue for the three months ended September 30, 2023 and $442,000 for the nine months ended September 30, 2023. The Company recognized revenue of zero for the three and nine months ended September 30, 2022. As of September 30, 2023, the Company had zero in deferred revenue under the Merck Neuromuscular License Agreement.

10.Grant Agreement

National Institutes of Health

The Company was awarded a cost-reimbursable grant from the National Institutes of Health (the “NIH”), a federal medical research agency supporting scientific studies, to support the Company’s research studies for arenavirus hemorrhagic fever. This award was based on budgeted direct and indirect costs and may only be used for budgeted costs as allowable under certain government regulations and NIH’s policy and compliance requirements, subject to government audit. This award was $1.1 million for the budget period January 2021 to December 2021, which was later extended to December 31, 2022.

The Company recognized grant revenue under this grant of zero for the three and nine months ended September 30, 2023. The Company recognized grant revenue of $200,000 for the three months ended September 30, 2022 and $501,000 for the nine months ended September 30, 2022.

11.Licensing Revenue Agreements

The following table shows the activity for the Company’s licensing revenue agreements and deferred revenue (in thousands):

	September 30,
	2023		2022
	(in thousands)
Balance as of beginning of period	$	—	$	1,041
Decrease for provision of research services		—		(965	)
Balance as of end of period	$	—	$	76

Genentech, Inc.

In April 2018, the Company entered into an exclusive option and license agreement with Genentech, as amended in November 2019 and October 2020 (such agreement, as amended, the “Genentech Agreement”), to develop the Company’s α9/α10 nicotinic acetylcholine receptor (“nAChR”) antagonists for the treatment of chronic pain. On December 27, 2022, the Company through its subsidiary KCP, received written notice from Genentech of its termination of the Genentech Agreement.

The Company recognized license revenue over time of zero under the Genentech Agreement with Genentech for the three and nine months ended September 30, 2023. The Company recognized license revenue of zero for the three months ended September 30, 2022 and $965,000 for the nine months ended September 30, 2022. There was no deferred revenue related to this license as of September 30, 2023 as the Genentech Agreement was terminated in December 2022.

Merck

In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. This collaboration focused on the discovery and development of novel candidates for the treatment of ALS. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. As a result, the Company is eligible to receive up to an additional $255.0 million in development milestones, sales milestones and royalties on net sales. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. The Company recognized one-time licensing revenue of $5.0 million for the three months ended June 30, 2023 under the Merck Neuromuscular License Agreement. The Company received the $5.0 million milestone payment in July 2023.

12.Stock-Based Compensation

2008 Equity Incentive Plan

The Company’s 2008 Equity Incentive Plan (the “2008 Plan”) provided for the grant of incentive stock options, non-statutory stock options, restricted stock awards and restricted stock units to employees and non-employee service providers of the Company. Under the 2008 Plan, the exercise price of stock options granted were at 100% of the estimated fair market value of the Company’s common stock on the date of grant and the contractual term of stock options granted were between five and ten years. Options become vested and, if applicable, exercisable based on terms

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determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement.

In 2018, the 2008 Plan expired and 225,041 stock options granted prior to the 2008 Plan expiration remain outstanding as of September 30, 2023.

2010 Equity Incentive Plan

The Company’s 2010 Equity Incentive Plan (the “2010 Plan”) provided for the grant of incentive stock option, non-statutory stock options, stock appreciation rights, restricted stock awards and restricted stock unit awards to employees and non-employee service providers of the Company. Under the 2010 Plan, the exercise price of stock options granted were at 100% of the estimated fair market value of the Company’s common stock on the date of grant and the contractual term of stock options granted did not exceed ten years. Options become vested and, if applicable, exercisable based on terms determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement. Stock appreciation rights (“SARs”) provide a participant with the right to receive the aggregate appreciation in stock price over the market price of the Company’s common stock at the date of grant, payable in cash. The rights granted have varying vesting terms, including SARs that vest immediately on the grant date and upon satisfaction of the service-based requirement, typically three to five years. The maximum fair value is limited to four times the exercise price.

In February 2020, the 2010 Plan expired and 199,103 stock options granted prior to the expiration remain outstanding as of September 30, 2023. As of September 30, 2023, there were no SARs outstanding.

2020 Equity Incentive Plan

The Company’s 2020 Equity Incentive Plan (the “2020 Plan”) authorizes the grant of equity awards for up to 206,000 shares of the Company’s voting common stock and 206,000 of the Company’s non-voting common stock.

The 2020 Plan provides for the grant of incentive stock options, non-statutory stock options and restricted stock to employees and non-employee service providers. Under the 2020 Plan, the contractual term of stock options shall not exceed ten years and the exercise price of stock options granted shall not be less than 100% of the estimated fair market value of the Company’s common stock on the date of grant. However, the exercise price of incentive stock options granted to a 10% stockholder shall not be less than 110% of the fair market value of the common stock on the date of grant and the contractual term shall not exceed ten years. Options become vested and, if applicable, exercisable based on terms determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement. Restricted stock has vesting terms that vest immediately on the grant date or upon satisfaction of the service-based requirement, typically four years or the performance-based requirement. The Company has a repurchase right exercisable upon termination of continuous service with respect to restricted stock for any shares that are issued and unvested.

In December 2022, the 2020 Plan expired and 201,919 stock options and 9,809 RSUs granted prior to the 2020 Plan expiration remain outstanding as of September 30, 2023.

2022 Equity Incentive Plan

In December 2022, the Company approved the 2022 Equity Incentive Plan (the “2022 Plan”). The 2022 Plan provides for the grant of incentive stock option, non-statutory stock options, restricted stock, restricted stock units, stock appreciation rights (“SARs”), performance units and performance shares to employees, directors and independent contractors of the Company. Under the 2022 Plan, the exercise price of stock options grants shall be at 100% fair market value of the Company’s common stock on the date of grant and the contractual term of stock options granted shall not exceed ten years. Options become vested and, if applicable, exercisable based on terms determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement. SARs provide a participant with the right to receive the aggregate appreciation in stock price over the market price of the Company’s common stock at the date of grant, payable in cash or in shares of equivalent value.

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Stock Option Activity

The following table summarizes stock option activity under the Company’s equity incentive plans:

	Outstanding Stock Options			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
	(in thousands, except per share amounts and years)
December 31, 2022		734		$	22.67		5.4	$	—
Granted		1,383		$	3.19
Exercised		—		$	—
Forfeited		(98	)	$	25.82
Expired		(9	)	$	10.90
Outstanding as of September 30, 2023		2,010		$	9.16		8.0	$	286
Exercisable as of September 30, 2023		1,008		$	13.79		6.5	$	51

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Fair Value of Stock Options

The fair value of stock options granted for employee and non-employee awards was estimated at the grant date using the Black-Scholes option pricing model based on the following assumptions:

	Nine Months Ended September 30,
	2023	2022
Expected volatility	111.1% - 113.1%	84.2% - 86.0%
Expected term (years)	5.35 - 6.08	3.0 - 7.0
Risk-free interest rate	3.4% - 4.4%	1.6% - 2.9%
Expected dividend yield	0% - 0%	0% - 0%

Restricted Stock

The Company has granted restricted stock units (“RSUs”) under its equity incentive plans with both service-based and performance-based vesting conditions. As of September 30, 2023, the Company’s outstanding RSUs are time-based and have a grant date fair value of $267,000.

The following table summarizes the Company’s restricted stock activity consisting of RSUs:

	Number of Restricted Stock (RSUs)			Weighted-Average Grant Date Fair Value Per Share
	(in thousands, excepts per share amounts)
Outstanding and unvested as of December 31, 2022		175		$	26.89
Exercised/Released		(157	)	$	26.89
Cancelled/Forfeited		(8	)	$	26.48
Outstanding and unvested as of September 30, 2023		10		$	27.22

Stock-Based Compensation

The following table summarizes total stock-based compensation included in the Company’s consolidated statements of operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands)
Research and development	$	91	$	292	$	516	$	895
General and administrative		383		185		2,882		622
Total stock-based compensation	$	474	$	477	$	3,398	$	1,517

As of September 30, 2023, there was $3.4 million of unrecognized stock-based compensation related to stock options and RSUs outstanding, which is expected to be recognized over a weighted-average remaining service period of 2.0 years.

13.Net Loss Per Share

The following table summarizes the computation of basic and diluted net loss per share:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
	(in thousands, excepts per share amounts)
Numerator:
Net loss attributable to Kineta, Inc.	$	(5,380	)	$	(5,585	)	$	(11,445	)	$	(16,439	)
Denominator:
Weighted-average common shares outstanding, basic and diluted(1)		11,738			4,891			10,505			4,808
Net loss per share, basic and diluted	$	(0.46	)	$	(1.14	)	$	(1.09	)	$	(3.42	)

(1) Included in the denominator were 577,000 and 530,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2023, respectively, with an exercise price of $0.14. Included in the denominator were 155,000 and 153,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2022, respectively, with an exercise price of $0.14.

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The following outstanding potentially dilutive common stock equivalents were excluded from the computation of diluted net loss per share as of the periods presented because including them would have been antidilutive:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands)
Common stock options		2,010		721		2,010		721
Unvested restricted stock subject to repurchase		10		170		10		170
Warrants to purchase common stock		1,630		154		1,630		154
Vested restricted stock subject to recall		56		56		56		56
Convertible notes, if converted		—		660		—		660
Total		3,706		1,761		3,706		1,761

Defined Contribution Plan

The Company sponsors a 401(k) Plan whereby all employees are eligible to participate in the 401(k) Plan after meeting certain eligibility requirements. Participants may elect to have a portion of their salary deferred and contributed to the 401(k) plan, subject to certain limitations. The Company provided matching contributions of $24,000 for the three months ended September 30, 2023 and $93,000 for the nine months ended September 30, 2023. The Company provided matching contributions of $30,000 for the three months ended September 30, 2022 and $97,000 for the nine months ended September 30, 2022.

14.Related Party Transactions

Stock Purchases

During the three months ended September 30, 2023, five members of the Company’s executive management purchased 30,000 shares of the Company’s common stock on the open market and one director of the Company purchased 5,000 shares of the Company’s common stock on the open market.

During the nine months ended September 30, 2023, five members of the Company’s executive management purchased 35,000 shares of the Company’s common stock on the open market and one director of the Company purchased 5,000 shares of the Company’s common stock on the open market.

RSU Vesting

During the nine months ended September 30, 2023, the Company issued 100,000 shares of its common stock to members of the Company’s executive management and 10,000 shares to directors of the Company, upon vesting of restricted stock units.

Warrant Exercises

During the nine months ended September 30, 2023, the Company issued 3,000 shares of its common stock to members of the Company’s executive management and 60,000 shares to a director of the Company, upon exercise of outstanding warrants.

2020 Convertible Notes

As of September 30, 2022, the Company had a principal balance of $9.8 million outstanding for its 2020 convertible notes. Two members of the Company’s board of directors held two of 2020 convertible notes totaling $1.8 million.

15.Subsequent Events

The Company evaluated subsequent events through the date these consolidated financial statements were issued.

Equity Raise - Registered Direct Offering

On October 3, 2023, the Company, entered into a Securities Purchase Agreement (the “October 2023 Purchase Agreement”) with an institutional investor (the “October 2023 Investor”) pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of Nasdaq (such offering, the “October 2023 Registered Offering”), (i) an aggregate of 110,000 shares of its common stock at a purchase price of $3.37 per share, and (ii) pre-funded warrants exercisable for up to 780,208 shares of its common stock (the “October 2023 Pre-Funded Warrants”) to the October 2023 Investor at a purchase price of $3.369 per October 2023 Pre-Funded Warrant, for aggregate gross proceeds from the October

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2023 Registered Offering of approximately $3.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each October 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The October 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the October 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “October 2023 Private Placement” and, together with the October 2023 Registered Offering, the “October 2023 Offering”), the Company issued to the October 2023 Investor warrants to purchase up to 890,208 shares of common stock (the “October 2023 Common Warrants”) at an exercise price of $3.25 per share. The October 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the October 2023 Offering, the Company entered into an engagement letter with H.C. Wainwright & Co., LLC (“Wainwright”), pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the October 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $210,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $310,000, which resulted in net proceeds to the Company of $2.7 million. On October 5, 2023, the Company also issued to Wainwright or its designees warrants to purchase 44,510 shares of common stock (the “October 2023 Wainwright Warrants”). The October 2023 Wainwright Warrants have a term of five years from the commencement of sales in the October 2023 Offering, and have an exercise price of $4.2125 per share.

Amendment No. 6 to the Securities Purchase Agreement

In connection and concurrently with the execution of the Merger Agreement, the Company entered into the Securities Purchase Agreement to sell shares of the Company’s common stock to certain institutional investors in the Private Placement. The Company and the investors entered into an amendment to the Securities Purchase Agreement on October 13, 2023 to, among other things, extend the date of the second closing. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited condensed consolidated financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q. Some of the information contained in this discussion and analysis or set forth elsewhere in this Quarterly Report on Form 10-Q, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. As a result of many factors, including those factors set forth in the “Risk Factors” section of this Quarterly Report on Form 10-Q, our actual results could differ materially from the results described in, or implied by, the forward-looking statements contained in the following discussion and analysis.

Overview

We are a clinical-stage biotechnology company with a mission to develop next-generation immunotherapies that transform patients’ lives. We have leveraged our expertise in innate immunity and are focused on discovering and developing potentially differentiated immunotherapies that address the major challenges with current cancer therapy.

We have established our Innate Immunity Development Platform aimed at developing fully human monoclonal antibodies to address the major mechanisms of cancer immune resistance:

•Immuno-suppression;

•Exhausted T cells; and

•Poor tumor immunogenicity

Utilization of our Innate Immunity Development Platform is designed to result in novel, well-characterized immuno-oncology lead antibody therapeutics that can be efficiently advanced into investigational new drug (“IND”)-enabling preclinical studies and clinical trials.

Our pipeline of assets and research interests includes (i) KVA12123, a monoclonal antibody (“mAb”) immunotherapy targeting VISTA (V-domain Ig suppressor of T cell activation) and (ii) an anti-CD27 agonist mAb immunotherapy. These immunotherapies have the potential to address disease areas with unmet medical needs and significant commercial potential.

We dosed the first patient in a Phase 1/2 clinical trial of KVA12123 in the United States in April 2023. The ongoing Phase 1/2 clinical study is designed to evaluate KVA12123 alone and in combination with the immune checkpoint inhibitor pembrolizumab in patients with advanced solid tumors. KVA12123 is engineered to be a differentiated VISTA blocking immunotherapy to address the problem of immunosuppression in the tumor microenvironment. It is a fully human engineered IgG1 monoclonal antibody that was designed to bind to VISTA through a unique epitope and across neutral and acidic pHs. KVA12123 may be an effective immunotherapy for many types of cancer including non-small cell lung cancer (“NSCLC”), colorectal cancer (“CRC”), ovarian cancer (“OC”), renal cell carcinoma (“RCC”) and head and neck squamous cell carcinoma (“HNSCC”). These indications represent a significant unmet medical need with a large worldwide commercial opportunity for KVA12123.

We are also conducting preclinical studies on our lead anti-CD27 agonist mAb immunotherapy that was discovered utilizing our Innate Immunity Development Platform. This lead candidate is a fully human mAb that demonstrates low nanomolar (“nM”) binding affinity to CD27 in humans. In preclinical studies, our lead anti-CD27 agonist mAb was observed to induce T cell proliferation and secretion of cytokines involved in T cell priming and recruitment, as well as NK cell activation, suggesting the ability to potentiate new anti-tumor responses. CD27 is a clinically validated target that may be an effective immunotherapy for advanced solid tumors including RCC, CRC and OC. We continue to conduct preclinical studies to optimize our lead anti-CD27 agonist mAb clinical candidate and to evaluate it in combination with other check-point inhibitors.

According to Market Data Forecast, the immuno-oncology market generated sales of approximately $99 billion in 2022 and is forecast to reach $179 billion in 2027. If we successfully complete the clinical trial program for KVA12123 and we subsequently obtain regulatory approval for KVA12123, we will focus on initial target indications in NSCLC, CRC and OC. Clinical development of KVA12123 will be as a second-line therapy in these indications. These three cancer therapy segments represent a forecasted $48 billion market opportunity in 2027 according to GlobalData.

We are a leader in the field of innate immunity and are focused on developing potentially differentiated immunotherapies. With drug candidates expected to enter the clinic and additional immuno-oncology assets in preclinical development, we believe we are positioned to achieve multiple value-driving catalysts. We have assembled an experienced management team, a seasoned research and development team, an immuno-oncology focused scientific advisory board, an enabling technology platform and a leading intellectual property position to advance our pipeline of potential novel immunotherapies for cancer patients.

Since our inception in 2007, we have devoted substantially all of our resources to raising capital, licensing certain technology and intellectual property rights, identifying and developing potential product candidates, conducting research and development activities, including preclinical studies and clinical trials, organizing and staffing operations and providing general and administrative support for these operations.

We have no products approved for commercial sale and have not generated any revenue from product sales. To date, revenue has been generated from the out-licensing of certain rights to third parties, providing research services under licensing and collaboration agreements as well as revenue from government grants.

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We have never been profitable and have incurred operating losses in each period since inception. Our net losses were $11.4 million for the nine months ended September 30, 2023 and $16.5 million for the nine months ended September 30, 2022. As of September 30, 2023 we had an accumulated deficit of $163.1 million.

We expect to incur significant expenses and continued operating losses for at least the next several years as we initiate and continue the clinical development of, and seek regulatory approval for, our product candidates and add personnel necessary to advance our pipeline of clinical-stage product candidates. In addition, operating as a publicly-traded company will involve the hiring of additional financial and other personnel, and the incurrence of substantial other costs associated with operating as a public company. We expect that our operating losses will fluctuate significantly from quarter to quarter and year to year due to timing of clinical development programs and efforts to achieve regulatory approval.

From inception to September 30, 2023, we have raised cash from sales and issuances of common stock and borrowings under notes payable. As of September 30, 2023, we had cash of $7.6 million. Our current capital resources, together with the $2.7 million net proceeds received in October 2023 from the registered direct offering plus the committed proceeds of $22.5 million pursuant to the second closing of the Private Placement, will be sufficient to fund operating expenses and capital expenditure requirements into early 2025. Our long term plans will require us to raise substantial additional capital to continue our clinical development and potential commercialization activities. Accordingly, we will need to raise substantial additional capital to continue to fund our long-term plans. The amount and timing of our future funding requirements will depend on many factors, including the pace and results of our clinical development efforts. Failure to raise capital as and when needed, on favorable terms or at all, would have a negative impact on our financial condition and our ability to develop our product candidates.

Private Placement

In connection and concurrently with the execution of the Merger Agreement, we entered into the Securities Purchase Agreement with certain investors to sell shares of our common stock to such investors in the Private Placement. We and the investors entered into an amendment to the Securities Purchase Agreement on October 13, 2023 to, among other things, extend the date of the second closing from October 31, 2023 to April 15, 2024.

The first closing of the Private Placement occurred on December 16, 2022 and we issued 649,346 shares of our common stock and received net proceeds of $7.4 million. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024. The Company has the ability to unilaterally terminate the Securities Purchase Agreement until the date of the second closing.

Geopolitical Developments

Geopolitical developments, such as the Russian invasion of Ukraine or deterioration in the bilateral relationship between the United States and China, may impact government spending, international trade and market stability, and cause weaker macro-economic conditions. The impact of these developments, including any resulting sanctions, export controls or other restrictive actions that may be imposed against governmental or other entities in, for example, Russia, have in the past contributed and may in the future contribute to disruption, instability and volatility in the global markets, which in turn could adversely impact our operations and weaken our financial results. Certain political developments may also lead to uncertainty to regulations and rules that may materially affect our business.

At-the-Market Offering Program

In February 2023, we entered into a sales agreement (the “Sales Agreement”) with Jefferies with respect to an at-the-market (“ATM”) offering program under which we may issue and sell, from time to time and at our sole discretion, shares of our common stock, in an aggregate offering amount of up to $17.5 million, subject to the offering limits in General Instruction I.B.6 to Form S-3. Jefferies acts as our sales agent and will use commercially reasonable efforts to sell shares of common stock from time to time, based upon instruction from us. We will pay Jefferies 3.0% of the gross proceeds from the sales of any common stock sold pursuant to the Sales Agreement.

On April 19, 2023, we delivered written notice to Jefferies that we were suspending and terminating the prospectus supplement (the “ATM Prospectus Supplement”) related to our common stock issuable pursuant to the Sales Agreement. We will not make any sales of our securities pursuant to the Sales Agreement, unless and until a new prospectus supplement is filed. Other than the termination and suspension of the ATM Prospectus Supplement, the Sales Agreement remains in full force and effect.

During the nine months ended September 30, 2023, we sold 126,503 shares of our common stock to individual investors under the Sales Agreement and received net proceeds of $0.8 million in connection with the ATM equity offering program.

Registered Direct Offerings

April 2023

On April 20, 2023, we entered into a Securities Purchase Agreement (the “April 2023 Purchase Agreement”) with an institutional investor (the “April 2023 Investor”), pursuant to which we issued and sold, in a registered direct offering priced at-the-market under the rules of The Nasdaq Stock Market LLC (“Nasdaq”) (such offering, the “April 2023 Registered Offering”), (i) an aggregate of 948,000 shares of our common stock, at a purchase price of $4.21 per share and (ii) pre-funded warrants exercisable for up to 477,179 shares of our common stock (the “April 2023

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Pre-Funded Warrants”) to the April 2023 Investor at a purchase price of $4.209 per April 2023 Pre-Funded Warrant, for aggregate gross proceeds from the April 2023 Registered Offering (as defined below) of approximately $6.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each April 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The April 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the April 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “April 2023 Private Placement” and, together with the April 2023 Registered Offering, the “April 2023 Offering”), we issued to the April 2023 Investor warrants to purchase up to 1,425,179 shares of common stock (the “April 2023 Common Warrants”) at an exercise price of $4.08 per share. The April 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the April 2023 Offering, we entered into an engagement letter with H.C. Wainwright & Co., LLC (“Wainwright”), pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the April 2023 Purchase Agreement. As compensation for such placement agent services, we paid Wainwright an aggregate cash fee equal to $420,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $520,000, which resulted in net proceeds to the Company of $5.5 million. On April 24, 2023, we also issued to Wainwright or its designees warrants to purchase 71,259 shares of common stock (the “April 2023 Wainwright Warrants”). The April 2023 Wainwright Warrants have a term of five years from the commencement of sales in the April 2023 Offering, and have an exercise price of $5.2625 per share.

October 2023

On October 3, 2023,we entered into a Securities Purchase Agreement (the “October 2023 Purchase Agreement”) with an institutional investor (the “October 2023 Investor”) pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of Nasdaq (such offering, the “October 2023 Registered Offering”), (i) an aggregate of 110,000 shares of our common stock, at a purchase price of $3.37 per share, and (ii) pre-funded warrants exercisable for up to 780,208 shares of our common stock (the “October 2023 Pre-Funded Warrants”) to the October 2023 Investor at a purchase price of $3.369 per October 2023 Pre-Funded Warrant, for aggregate gross proceeds from the October 2023 Registered Offering of approximately $3.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each October 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The October 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the October 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “October 2023 Private Placement” and, together with the October 2023 Registered Offering, the “October 2023 Offering”), we issued to the October 2023 Investor warrants to purchase up to 890,208 shares of common stock (the “October 2023 Common Warrants”) at an exercise price of $3.25 per share. The October 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the October 2023 Offering, we entered into an engagement letter with Wainwright, pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the October 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $210,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $310,000, which resulted in net proceeds to the Company of $2.7 million. On October 5, 2023, the Company also issued to Wainwright or its designees warrants to purchase 44,510 shares of Common Stock (the “October 2023 Wainwright Warrants” and, together with the Pre-Funded Warrants and the Common Warrants, the “Warrants”). The October 2023 Wainwright Warrants have a term of five years from the commencement of sales in the October 2023 Offering, and have an exercise price of $4.2125 per share.

Nasdaq Compliance

On June 27, 2023, the Company received written notice from the Listing Qualifications Department of Nasdaq stating that the Company is not in compliance with Nasdaq Listing Rule 5550(b)(2) because the Company has not maintained a minimum Market Value of Listed Securities of at least $35 million for the last 30 consecutive business days.

On August 15, 2023, the Company received written notice from the Listing Qualifications Department of Nasdaq notifying the Company that, based on its Quarterly Report on Form 10-Q for the quarter ended June 30, 2023, the Company has regained compliance with the alternative standard under Nasdaq Listing Rule 5550(b)(1). Nasdaq considers the matter closed.

Financial Operations Overview

Revenues

To date, we have not generated any revenue from product sales and do not expect to generate any revenue from product sales in the near future. Our revenues have been primarily derived from our collaboration, research and license agreements as well as grants awarded by government agencies.

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Collaboration Revenues

In connection with the Merger, we became the successor in interest to an exclusive license and research collaboration agreement (the “Merck Neuromuscular License Agreement”) with Merck (known as MSD outside the United States and Canada) to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis. We recognize revenue using the cost-to-cost method, which we believe best depicts the transfer of control to the customer. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of actual costs incurred to the total estimated costs expected upon satisfying the identified performance obligation. Under this method, revenue is recognized as a percentage of actual cost incurred to the estimated costs to complete.

Licensing Revenues

Our license agreements may include the transfer of intellectual property rights in the form of licenses, promises to provide research and development services and promises to participate on certain development committees with the collaboration party. The terms of such agreements include payment to us of one or more of the following: nonrefundable upfront fees, payment for research and development services, development, regulatory and commercial milestone payments and sales-based milestones and royalties on net sales of licensed products.

Revenue associated with nonrefundable upfront license fees where the license fees and research and development activities cannot be accounted for as separate performance obligations is deferred and recognized as revenue over the expected period of performance based on a cost-based input method. Revenue from contingent development, regulatory and commercial milestones, when not deemed probable of significant reversal of cumulative revenue, is also recognized over the performance period based on a similar method. Where we have no remaining performance obligations, revenue from such milestones is recognized when the accomplishment of the milestones is deemed probable. Our license agreement with Genentech was terminated in December 2022 and we do not expect to recognize any revenue from the Genentech Agreement during 2023.

Grant Revenues

Under our grant agreements with government-sponsored and charitable organizations, we receive payment for providing research and development services. Revenue associated with grant arrangements is based on a cost-based reimbursement model that recognizes revenue over time as we perform work under the grants and incur qualifying research and development costs.

We have completed research and development services under the grant agreements and do not expect to recognize any revenue during 2023.

Operating Expenses

Research and Development Expenses

Research and development expenses represent costs incurred in connection with the discovery, research, preclinical and clinical development, and manufacture of our product candidates. We recognize all research and development costs as they are incurred. Research and development expenses consist primarily of the following:

•salaries, bonuses, benefits, stock-based compensation, research and consulting arrangements and other related costs for individuals involved in research and development activities;

•external clinical trial costs to enroll clinical sites and patients to conduct phase 1 clinical trials;

•external research and development expenses incurred under agreements with contract research organizations, investigative sites and other scientific development services;

•costs incurred under agreements with contracted research and manufacturing organizations for developing and manufacturing materials for preclinical studies, clinical trials and laboratory supplies;

•licensing agreements and associated costs;

•costs related to compliance with regulatory requirements;

•facilities and other allocated expenses for rent and insurance; and

•other expenses incurred to advance research and development activities including manufacturing costs associated with production, scale up, testing and optimization of methods associated with the production of materials.

The largest component of our operating expenses has historically been our investment in research and development activities. We expect our research and development expenses will increase in the future as we advance our product candidates into and through clinical trials and pursue regulatory approvals, which will require a significant investment in costs of clinical trials, regulatory support and contract manufacturing. In addition, we continue to evaluate opportunities to acquire or in-license other product candidates and technologies, which may result in higher research and development expenses due to license fee and/or milestone payments, as well as added clinical development costs.

As we are working on multiple research and development programs at any one time, we track our external expenses by the stage of program, clinical or preclinical. However, our internal expenses, including unallocated costs, personnel costs and infrastructure costs, are not directly related to any one program and are deployed across multiple programs. As such, we do not track internal expenses on a specific program basis.

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The process of conducting clinical trials necessary to obtain regulatory approval is costly and time consuming. We may never succeed in timely developing and achieving regulatory approval for our product candidates. The probability of success of our product candidates may be affected by numerous factors, including clinical data, competition, manufacturing capability and commercial viability. As a result, we are unable to determine the duration and completion costs of our development projects or when and to what extent we will generate revenue from the commercialization and sale of any of our future product candidates.

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits and stock-based compensation for personnel in executive, finance and accounting, and other administrative functions, as well as fees paid for legal, accounting and tax services, consulting fees and facilities costs not otherwise included in research and development expenses. Legal costs include general corporate legal fees and patent costs. We expect to incur additional expenses as a result of operating as a public company, including expenses related to compliance with the rules and regulations of the SEC and Nasdaq, additional insurance, investor relations and other administrative expenses and professional services.

Other (Expense) Income

Interest Expense

Interest expense consists of interest charged on outstanding borrowings associated with our debt arrangements primarily consisting of borrowings under several notes payable agreements.

Change in Fair Value Measurement of Other Asset

Change in fair value of other asset relates to the remeasurement of the rights from Private Placement that we determined was a derivative, which requires the asset to be accounted for at fair value. Until settlement, this other asset is remeasured at fair value at each reporting period with the changes in fair value recorded in the statement of operations.

Change in Fair Value Measurement of Notes Payable

Change in fair value of notes payable relates to the remeasurement of the notes payable that we elected to account for under the fair value option. Until settlement, these notes payable are remeasured at fair value at each reporting period with the changes in fair value recorded in the statement of operations.

(Loss) Gain on Extinguishments of Debt, Net

(Loss) gain on extinguishments of debt, net consists of the (loss) gain upon settlement of our notes payable and other debt.

Other (Expense) Income, Net

Other (expense) income, net consists of interest income and other items that are of a non-recurring nature and primarily relate to items that are immaterial.

Net (Loss) Income Attributable to Noncontrolling Interest

Net (loss) income attributable to noncontrolling interest reflects investors’ share of net (loss) income in our majority owned subsidiaries.

Results of Operations

Comparison of the three and nine months ended September 30, 2023 to the three and nine months ended September 30, 2022

The following table summarizes our results of operations for the periods presented:

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	Three Months Ended September 30,									Nine Months Ended September 30,
	2023			2022			Change			2023			2022			Change
	(in thousands)									(in thousands)
Revenues:
Collaboration revenues	$	—		$	—		$	—		$	442		$	—		$	442
Licensing revenues		—			—			—			5,000			965			4,035
Grant revenues		—			200			(200	)		—			501			(501	)
Total revenues		—			200			(200	)		5,442			1,466			3,976
Operating expenses:
Research and development		1,909			2,605			(696	)		7,462			10,507			(3,045	)
General and administrative		2,077			2,046			31			9,432			5,480			3,952
Total operating expenses		3,986			4,651			(665	)		16,894			15,987			907
Loss from operations		(3,986	)		(4,451	)		465			(11,452	)		(14,521	)		3,069
Other (expense) income:
Interest expense		(21	)		(559	)		538			(65	)		(1,699	)		1,634
Change in fair value of other asset		(1,401	)		—			(1,401	)		(180	)		—			(180	)
Change in fair value of measurement of notes payable		(4	)		(418	)		414			(17	)		(542	)		525
Gain on extinguishments of debt expense		—			(236	)		236			—			259			(259	)
Other income (expense), net		101			(3	)		104			298			(17	)		315
Total other (expense) income, net		(1,325	)		(1,216	)		(109	)		36			(1,999	)		2,035
Net income (loss)		(5,311	)		(5,667	)		356			(11,416	)		(16,520	)		5,104
Net income (loss) attributable to noncontrolling interest		69			(82	)		151			29			(81	)		110
Net income (loss) attributable to Kineta, Inc.	$	(5,380	)	$	(5,585	)	$	205		$	(11,445	)	$	(16,439	)	$	4,994

Revenues

Collaboration revenues were zero for the three months ended September 30, 2023 and zero for the three months ended September 30, 2022 as a result of research services provided under the Merck Neuromuscular License Agreement pursuant to which the Company became a successor in interest in connection with the Merger. Collaboration revenues were $442,000 for the nine months ended September 30, 2023 and zero for the nine months ended September 30, 2022. Upon completion of the Merger, we had $442,000 in deferred revenue under the Merck Neuromuscular License Agreement. As of September 30, 2023, we have completed the project services and had zero in deferred revenue under the Merck Neuromuscular License Agreement.

Licensing revenues were zero for the three months ended September 30, 2023 and zero for the three months ended September 30, 2022 and were $5.0 million for the nine months ended September 30, 2023 and $965,000 for the nine months ended September 30, 2022. The licensing revenues in 2023 were due to the achievement of a development milestone pursuant to the Merck Neuromuscular License Agreement and the licensing revenues in 2022 were due to research and development services from the Genentech Agreement, which was terminated in December 2022.

Grant revenues were zero for the three months ended September 30, 2023 and $200,000 for the three months ended September 30, 2022 and were zero for the nine months ended September 30, 2023 and $501,000 for the nine months ended September 30, 2022. The grant revenues in 2022 were due to services provided under a grant that was concluded in December 2022.

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Research and Development Expenses

The following table summarizes our research and development expenses by program and category for the periods presented:

	Three Months Ended September 30,								Nine Months Ended September 30,
	2023			2022		Change			2023		2022		Change
	(in thousands)								(in thousands)
Direct external program expenses:
KVA12123 program	$	1,301		$	831	$	470		$	4,732	$	5,207	$	(475	)
ALS target program		25			—		25			307		—		307
CD27 program		83			149		(66	)		245		511		(266	)
KCP-506 program		(80	)		130		(210	)		31		441		(410	)
Other programs		—			133		(133	)		—		311		(311	)
Internal and unallocated expenses:
Personnel-related costs		318			1,093		(775	)		1,240		3,148		(1,908	)
Facilities and related costs		209			216		(7	)		753		644		109
Other costs		53			53		0			154		245		(91	)
Total research and development expenses	$	1,909		$	2,605	$	(696	)	$	7,462	$	10,507	$	(3,045	)

Research and development expenses decreased by $696,000, or 27%, to $1.9 million for the three months ended September 30, 2023 from $2.6 million for the three months ended September 30, 2022. The increase in direct external program expenses of $86,000 was primarily due to higher clinical development activities for KVA12123, partially offset by lower activities for KCP-506 and other programs as we prioritize our lead product candidate. We expect our direct external program expenses to increase over time this year as we enroll and dose additional patients. The decrease in our internal and unallocated research and development expenses of $782,000 was primarily due to lower personnel costs as a result of reducing research and development staff in December 2022 as we transitioned to clinical trials.

Research and development expenses decreased by $3.0 million, or 29%, to $7.5 million for the nine months ended September 30, 2023 from $10.5 million for the nine months ended September 30, 2022. The decrease in direct external program expenses of $1.2 million was primarily due to lower activities for KVA12123 as we began securing clinical trial sites in advance of enrolling the first patient, which occurred in April 2023. We also incurred less costs for CD27 and KCP-506 as we prioritized efforts on KVA12123, our lead product candidate. We expect our direct external program expenses to increase over time this year as we enroll and dose additional patients. The decrease in our internal and unallocated research and development expenses of $1.9 million was primarily due to lower personnel costs as a result of reducing research and development staff in December 2022 as we transitioned to clinical trials.

General and Administrative Expenses

General and administrative expenses increased by $31,000, or 2%, to $2.1 million for the three months ended September 30, 2023 from $2.0 million for the three months ended September 30, 2022. The increase was immaterial, but primarily due to higher personnel costs and other administrative costs, mostly offset by lower professional fees. Personnel costs increased due to increased headcount to support public company responsibilities, including stock-based compensation, which increased due to additional options granted during 2023 and from RSUs with performance conditions contingent upon the closing of the Merger, which were not met until December 2022. Other administrative expenses increased primarily due to public company directors and officers insurance premiums.

General and administrative expenses increased by $4.0 million, or 72%, to $9.4 million for the nine months ended September 30, 2023 from $5.5 million for the nine months ended September 30, 2022. The increase was primarily due to increases in personnel costs of $3.2 million, professional services of $0.4 million and other administrative costs of $0.4 million. Personnel costs increased due to increased headcount to support public company responsibilities, including stock-based compensation, which increased due to additional options granted during 2023 and from RSUs with performance conditions contingent upon the closing of the Merger, which were not met until December 2022. Professional services increased due to higher legal, audit and consulting costs from operating as a public company. Other administrative expenses increased primarily due to public company directors and officers insurance premiums.

Other Income and expense, net

Interest Expense

Interest expense decreased by $538,000, or 96%, to $21,000 for the three months ended September 30, 2023 from $559,000 for the three months ended September 30, 2022. Interest expense decreased by $1.6 million, or 96%, to $65,000 for the nine months ended September 30, 2023 from $1.7 million for the nine months ended September 30, 2022. Interest expense decreased due to a significantly lower balance of notes in 2023 as the majority of notes were converted to equity in December 2022.

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Change in Fair Value Measurement of Other Asset

Change in fair value of other asset was a loss of $1.4 million for the three months ended September 30, 2023 and a loss of $180,000 for the nine months ended September 30, 2023. There was no change in fair value of the rights from Private Placement during 2022.

Change in Fair Value Measurement of Notes Payable

Change in fair value of notes payable was a loss of $4,000 for the three months ended September 30, 2023 and was a loss of $418,000 for the three months ended September 30, 2022. Change in fair value of notes payable was a loss of $17,000 for the nine months ended September 30, 2023 and was a loss of $542,000 for the nine months ended September 30, 2022. The fluctuations in 2023 were not significant due to a significantly lower balance of notes in 2023 as the majority of notes were converted to equity in December 2022.

Gain/loss on Extinguishments of Debt

Loss on extinguishments of debt was zero for the three months ended September 30, 2023 and $236,000 for the three months ended September 30, 2022 due to the settlement of notes payable accounted for under the fair value election. Gain on extinguishments of debt was zero for the nine months ended September 30, 2023 and $259,000 for the nine months ended September 30, 2022. There have been no settlement of notes payable during the three and nine months ended September 30, 2023 as the majority of notes were converted to equity in December 2022.

Liquidity and Capital Resources

Sources of Liquidity

Since our inception through September 30, 2023, our operations have been financed primarily by net cash proceeds from the sale and issuance of our common stock and borrowings under notes payable. We have also received upfront payments from our license agreements. As of September 30, 2023, we had $7.6 million in cash and an accumulated deficit of $163.1 million. We expect that our operating expenses will increase, and, as a result, anticipate that we will continue to incur increasing losses for the foreseeable future. Therefore, we will need to raise additional capital to fund our operations, which may be through the issuance of additional equity or through borrowings.

On April 20, 2023, we entered into the April 2023 Purchase Agreement with the April 2023 Investor, pursuant to which we issued and sold, in the April 2023 Registered Offering, (i) an aggregate of 948,000 shares of our common stock, at a purchase price of $4.21 per share and (ii) April 2023 Pre-Funded Warrants exercisable for up to 477,179 shares of our common stock to the April 2023 Investor at a purchase price of $4.209 per April 2023 Pre-Funded Warrant, for aggregate gross proceeds from the April 2023 Registered Offering of approximately $6.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each April 2023 Pre-Funded Warrant represents the right to purchase one share of our common stock at an exercise price of $0.001 per share. The April 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the April 2023 Pre-Funded Warrants are exercised in full.

In the April 2023 Private Placement, we issued to the April 2023 Investor the April 2023 Common Warrants to purchase up to 1,425,179 shares of common stock at an exercise price of $4.08 per share. The April 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the April 2023 Offering, we entered into an engagement letter with Wainwright, pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of our securities pursuant to the April 2023 Purchase Agreement. As compensation for such placement agent services, we paid Wainwright an aggregate cash fee equal to $420,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $520,000, which resulted in net proceeds to us of $5.5 million. On April 24, 2023, we also issued to Wainwright or its designees the April 2023 Wainwright Warrants to purchase 71,259 shares of common stock. The April 2023 Wainwright Warrants have a term of five years from the commencement of sales in the April 2023 Offering, and have an exercise price of $5.2625 per share.

On October 3, 2023, we entered into the October 2023 Purchase Agreement with the October 2023 Investor pursuant to which the Company issued and sold, in the October 2023 Registered Offering, (i) an aggregate of 110,000 shares of our common stock at a purchase price of $3.37 per share, and (ii) October 2023 Pre-Funded Warrants exercisable for up to 780,208 shares of our common stock to the October 2023 Investor at a purchase price of $3.369 per October 2023 Pre-Funded Warrant, for aggregate gross proceeds from the October 2023 Registered Offering of approximately $3.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each October 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The October 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the October 2023 Pre-Funded Warrants are exercised in full.

In the October 2023 Private Placement we issued to the October 2023 Investor the October 2023 Common Warrants to purchase up to 890,208 shares of common stock at an exercise price of $3.25 per share. The October 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

32

In connection with the October 2023 Offering, we entered into an engagement letter with Wainwright, pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of our securities pursuant to the October 2023 Purchase Agreement. As compensation for such placement agent services, we paid Wainwright an aggregate cash fee equal to $210,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $310,000, which resulted in net proceeds to us of $2.7 million. On October 5, 2023, the Company also issued to Wainwright or its designees the October 2023 Wainwright Warrants to purchase 44,510 shares of common stock. The October 2023 Wainwright Warrants have a term of five years from the commencement of sales in the October 2023 Offering, and have an exercise price of $4.2125 per share.

Future Funding Requirements

Our revenues to date have been primarily derived from our collaboration, research and license agreements as well as grants awarded by government agencies. We, however, have not generated any revenue from product sales, and do not know when, or if, we will generate any revenue from product sales. We do not expect to generate any revenue from product sales unless and until we obtain regulatory approval of and commercialize any of our product candidates. At the same time, we expect our expenses to increase in connection with our ongoing development activities, particularly as we continue the research, development and clinical trials of, and seeks regulatory approval for, our product candidates. In addition, subject to obtaining regulatory approval of any of our product candidates, we anticipate that we will need substantial additional funding in connection with our continuing operations. We plan to continue to fund our operations and capital requirements through equity and/or debt financing, but there are no assurances that we will be able to raise sufficient amounts of funding in the future on acceptable terms, or at all.

Our future funding requirements will depend on many factors, including:

•the progress, timing, scope, results and costs of the clinical trials of VISTA and preclinical studies or clinical trials of other potential product candidates we may choose to pursue in the future, including the ability to enroll patients in a timely manner for our clinical trials;

•the costs and timing of obtaining clinical and commercial supplies and validating the commercial manufacturing process for VISTA and any other product candidates we may identify and develop;

•the cost, timing and outcomes of regulatory approvals;

•the timing and amount of any milestone, royalty or other payments we are required to make pursuant to current or any future collaboration or license agreements;

•costs of acquiring or in-licensing other product candidates and technologies;

•the terms and timing of establishing and maintaining collaborations, licenses and other similar arrangements;

•the costs associated with attracting, hiring and retaining existing and additional qualified personnel as our business grows;

•efforts to enhance operational systems and hire additional personnel to satisfy our obligations as a public company, including enhanced internal controls over financial reporting; and

•the cost of preparing, filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights.

As of September 30, 2023, we had cash of $7.6 million. Our current capital resources as of September 30, 2023, together with the $2.7 million net proceeds received in October 2023 from the registered direct offering plus the committed proceeds of $22.5 million pursuant to the second closing of the Private Placement, will be sufficient to fund our operating expenses and capital expenditure requirements into early 2025.

However, until we can generate a sufficient amount of product revenue to finance our cash requirements, we expect to finance our future cash needs primarily through the issuance of additional equity, borrowings and strategic alliances with partner companies. To the extent that we raise additional capital through the issuance of additional equity or convertible debt securities, the ownership interest of our shareholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of existing shareholders. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through marketing and distribution arrangements or other collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or commercialization efforts or grant rights to develop and market product candidates to third parties that we would otherwise prefer to develop and market ourselves.

33

Cash Flows

The following table summarizes our cash flows for the periods indicated:

	Nine Months Ended September 30,
	2023			2022
	(in thousands)
Net cash provided by (used in):
Operating activities	$	(12,134	)	$	(11,536	)
Investing activities		331			(15	)
Financing activities		6,222			3,217
Net change in cash and cash equivalents	$	(5,581	)	$	(8,334	)

Operating Activities

Cash used in operating activities for the nine months ended September 30, 2023 was $12.1 million, consisting of a net loss of $11.4 million and a change in other net operating assets and liabilities of $4.9 million, partially offset by noncash charges of $4.2 million. Our change in net operating assets and liabilities primarily resulted from decreases in accounts payable of $2.3 million, accrued expenses and other current liabilities of $1.7 million, deferred revenue of $0.4 million, operating lease liability of $0.6 million and prepaid expenses and other current assets of $0.2 million. The noncash charges primarily consisted of $3.4 million in stock-based compensation and $0.5 million noncash operating lease expense and a $0.2 million change in fair value of other asset.

Cash used in operating activities for the nine months ended September30, 2022 was $11.5 million, consisting of a net loss of $16.5 million, partially offset by a change in other net operating assets and liabilities of $2.5 million and noncash charges of $2.4 million. Our change in net operating assets and liabilities primarily resulted from a $6.1 million increase in accounts payable and accrued expenses and other current liabilities mainly due to increased costs associated with our KVA12123 program and the Merger as well as the timing of payments, partially offset by a $2.0 million increase in prepaid expenses and other current assets mainly due to the capitalization of direct costs related to the asset acquisition of Yumanity, a $1.0 million decrease in deferred revenue mainly due to ongoing research and development services provided by us related to the Phase 1 clinical trial under our license agreement with Genentech and a $0.5 million decrease in operating lease liability. The noncash charges primarily consisted of $1.5 million in stock-based compensation, $0.5 million noncash operating lease expense and $0.5 million in change in fair value measurement of notes payable, partially offset by a $0.3 million gain on debt extinguishment driven by our settlement of notes payable accounted for under the fair value election.

Investing Activities

Cash provided by investing activities for the nine months ended September 30, 2023 was $0.3 million, consisting primarily of cash received from the sale of certain property and equipment. Cash used in investing activities for the nine months ended September 30, 2022 was insignificant.

Financing Activities

Cash provided by financing activities for the nine months ended September 30, 2023 was $6.2 million, primarily related to net proceeds of $5.5 million from the Registered Offering and $0.8 million from the issuance of our common stock to investors pursuant to the Sales Agreement.

Cash provided by financing activities for the nine months ended September 30, 2022 was $3.2 million, primarily related to $5.6 million in proceeds from the issuance of notes payable and $1.6 million in proceeds from the issuance of our common stock, offset by $4.0 million in payments of notes payable.

Debt Obligations

Notes Payable

As of September 30, 2023, we had outstanding notes payable in an aggregate principal amount of $779,000 at interest rates that range from 3.75% to 6%, of which $615,000 is due within the next 12 months. The principal amount of each note payable is due at a specified periodic repayment date and/or at maturity, with such dates ranging from June 2024 to on or after September 2050.

See Note 5 to our consolidated financial statements included in this Quarterly Report for additional information regarding our notes payable.

Other Contractual Obligations and Commitments

Our cash requirements greater than 12 months are related to other contractual obligations and commitments related to license agreements and leases.

We have entered into a number of strategic license agreements pursuant to which we have acquired rights to specific assets, technology and intellectual property. In accordance with these agreements, we are obligated to pay, among other items, future contingent payments that are dependent upon future events such as our achievement of certain development, regulatory and commercial milestones royalties, and sublicensing

34

revenue in the future, as applicable. As of September 30, 2023, the timing and likelihood of achieving the milestones and generating future product sales, and therefore payments that may become payable to these third parties, are uncertain.

We lease office and laboratory space for our corporate headquarters in Seattle, Washington under a lease agreement that expires in July 2024. As of September 30, 2023, undiscounted future minimum lease payments of $796,000 remain pursuant to the lease agreement.

In addition, we enter into agreements in the normal course of business with various third parties for preclinical research studies, clinical trials, testing and other research and development services. Such agreements generally provide for termination upon notice, although obligate us to reimburse vendors for any time or costs incurred through the date of termination.

Critical Accounting Estimates

Our management’s discussion and analysis of financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses, and related disclosures. Our estimates are based on historical experience and on various assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ materially from these estimates. Our critical accounting estimates used in the preparation of our financial statements for the three and nine months ended September 30, 2023 were consistent with those in Part II, Item 7 of our Annual Report on Form 10-K.

We believe that the accounting principles used in the preparation of our financial statements for the three and nine months ended September 30, 2023 were consistent with those in Part II, Item 7 of our Annual Report on Form 10-K.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are a smaller reporting company, as defined in Rule 12b-2 under the Exchange Act, for this reporting period and are not required to provide the information required under this item.

Item 4. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

Prior to completion of the Merger, we were a private company and had limited accounting and financial reporting personnel and other resources with which to address our internal controls and related procedures. In connection with the audit of our financial statements for the years ended December 31, 2022 and 2021, our management and our independent registered public accounting firm identified material weaknesses in our internal control over financial reporting. In connection with the review of our financial statements for the three months ended June 30, 2023, our management and our independent registered public accounting firm identified a material weakness in our internal control over financial reporting. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting as defined under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and by the Public Company Accounting Oversight Board (United States), such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis. The material weakness for the three months ended June 30, 2023 relates to accounting for complex financial instruments related to the derivative asset. The material weakness for the year ended December 31, 2022 relates to accounting for complex financial instruments related to warrants issued to certain existing stockholders. The material weaknesses for the year ended December 31, 2021 relate to segregation of duties in finance and internal technical resources for complex transactions. The material weaknesses are still present and have not been remediated.

Our management, with the participation of our Chief Executive Officer and Chief 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 the end of the fiscal quarter ended September 30, 2023. Based on this evaluation and for the reasons set forth above, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were not effective as of September 30, 2023.

We are in the process of implementing measures designed to improve our internal control over financial reporting to remediate the material weaknesses. For example, we began to address the material weaknesses by implementing certain Sarbanes-Oxley controls during the first half of 2022. In October 2022, we hired a Chief Financial Officer to enhance internal controls and address the material weaknesses and other control deficiencies identified during the 2021 audit of the financial statements. We have designed and implemented improved processes and internal controls, including ongoing senior management review and audit committee oversight. We have also implemented and upgraded accounting and reporting systems to improve accounting and financial reporting processes. Additionally, we have enhanced, developed and implemented formal policies, processes and documentation procedures relating to our financial reporting, including the oversight of third-party service providers. Our actions are subject to ongoing executive management review and will also be subject to audit committee oversight.

Notwithstanding the material weaknesses in internal control over financial reporting described above, our management has concluded that our consolidated financial statements included in this Quarterly Report on Form 10-Q are fairly stated in all material respects in accordance with accounting principles generally accepted in the United States of America.

35

Changes in Internal Control over Financial Reporting

Except as disclosed above, there has been no change in our internal control over financial reporting that occurred during the third quarter of 2023 that has materially affected, or is reasonably likely to materially affect, our internal control over current or future financial reporting.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings.

From time to time, Kineta may be a party to litigation or subject to claims incident to the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, Kineta currently believes that the final outcome of these ordinary course matters will not have a material adverse effect on Kineta’s business. Regardless of the outcome, litigation can have an adverse impact on Kineta because of defense and settlement costs, diversion of management resources and other factors. Kineta is currently not a party to any material legal proceedings.

Item 1A. Risk Factors.

Except as set forth below, there have been no material changes to our risk factors included in our 2022 Annual Report on Form 10-K, as updated by our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2023 and June 30, 2023. The following risk factor, together with the risks and uncertainties referenced above, should be considered carefully before making an investment decision. Any of these factors could result in a significant or material adverse effect on our results of operations or financial condition. Additional risk factors not presently known to us or that we currently deem immaterial may also impair our business or results of operations. We may disclose changes to such risk factors or disclose additional risk factors from time to time in our future filings with the SEC.

The second closing of the Private Placement may not close as anticipated.

As previously disclosed, we entered into the Securities Purchase Agreement with certain investors to sell shares of our common stock to such investors in the Private Placement. The first closing of the Private Placement occurred on December 16, 2022 and we issued 649,346 shares of our common stock and received net proceeds of $7.4 million. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is scheduled to occur on April 15, 2024. We may further amend the Private Placement to close at a later date based on our funding needs. No assurance can be provided that the second closing of the Private Placement will occur as anticipated or at all. If we do not consummate the second closing of the Private Placement, it may have a material adverse effect on our business, financial condition and results of operations.

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.

None.

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Item 6. Exhibits.

Exhibit Number	Description
2.1++	Agreement and Plan of Merger, dated June 5, 2022, by and among the Company, Kineta Operating, Inc. and Yacht Merger Sub, Inc. (filed as Exhibit 2.2 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on June 6, 2022 and incorporated herein by reference).
2.2	Form of Amendment No. 1 to the Agreement and Plan of Merger, dated as of December 5, 2022, by and among the Company, Kineta Operating, Inc. and Yacht Merger Sub, Inc. (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on December 5, 2022 and incorporated herein by reference).
3.1	Fifth Amended and Restated Certificate of Incorporation of the Company (filed as Exhibit 3.1 to the Company’s Registration Statement on Form S-3 (File No. 333-228529) as filed with the SEC on November 23, 2018 and incorporated herein by reference).
3.2	Certificate of Amendment of Fifth Amended and Restated Certificate of Incorporation of the Company, dated December 22, 2020 (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on December 30, 2020 and incorporated herein by reference).
3.3	Certificate of Amendment of Fifth Amended and Restated Certificate of Incorporation of the Company, dated December 22, 2020 (filed as Exhibit 3.2 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on December 30, 2020 and incorporated herein by reference).
3.4	Certificate of Amendment of Fifth Amended and Restated Certificate of Incorporation of the Company, dated December 16, 2022 (filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on December 22, 2022 and incorporated herein by reference).
3.5	Certificate of Amendment of Fifth Amended and Restated Certificate of Incorporation of the Company, dated December 16, 2022 (filed as Exhibit 3.2 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on December 22, 2022 and incorporated herein by reference).
3.6	Fourth Amended and Restated By-laws of the Company, dated December 16, 2022 (filed as Exhibit 3.3 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on December 22, 2022 and incorporated herein by reference).
4.1	Form of Pre-Funded Warrant (filed as Exhibit 4.1 to the Company's Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on October 5, 2023 and incorporated herein by reference).
4.2	Form of Common Warrant (filed as Exhibit 4.2 to the Company's Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on October 5, 2023 and incorporated herein by reference).
4.3	Form of Wainwright Warrant (filed as Exhibit 4.3 to the Company's Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on October 5, 2023 and incorporated herein by reference).
10.1	Form of Amendment No. 5 to the Securities Purchase Agreement dated July 21, 2023, by and among the Company and each of the institutional investors named therein (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on July 21, 2023 and incorporated herein by reference).
10.2	Form of Securities Purchase Agreement, dated as of October 3, 2023 (filed as Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on October 5, 2023 and incorporated herein by reference).
10.3	Form of Amendment No. 6 to the Securities Purchase Agreement dated October 13, 2023, by and among the Company and each of the institutional investors named therein (filed as Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-37695) as filed with the SEC on October 17, 2023 and incorporated herein by reference).
31.1*	Certification of Principal Executive Officer 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.
31.2*	Certification of Principal Financial Officer 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.
32.1*	Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.
101.SCH	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

++ Certain schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. A copy of any omitted schedule and/or exhibit will be furnished to the SEC upon request.

38

SIGNATURES

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

	Kineta, Inc.
Date: November 3, 2023	By:	/s/ Shawn Iadonato
		Shawn Iadonato, Ph.D.
		Chief Executive Officer and Director
		(Principal Executive Officer)
Date: November 3, 2023	By:	/s/ Keith A. Baker
		Keith A. Baker
		Chief Financial Officer
		(Principal Financial Officer)

39

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, Shawn Iadonato, certify that:

(1)I have reviewed this Quarterly Report on Form 10-Q of Kineta, 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: November 3, 2023	/s/ Shawn Iadonato
	Shawn Iadonato
	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, Keith A. Baker, certify that:

(1)I have reviewed this Quarterly Report on Form 10-Q of Kineta, 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: November 3, 2023	/s/ Keith A. Baker
	Keith A. Baker
	Chief Financial Officer (Principal Financial Officer)

EX-32.1

November 3, 2023

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 on Form 10-Q of Kineta, Inc. (the “Company”) for the three months ended September 30, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(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: November 3, 2023	/s/ Shawn Iadonato
	Shawn Iadonato
	Chief Executive Officer
Date: November 3, 2023	/s/ Keith A. Baker
	Keith A. Baker
	Chief Financial Officer

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Report or as a separate disclosure document.

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	Sep. 30, 2023	Nov. 06, 2023
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Current Fiscal Year End Date	--12-31
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Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
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Entity File Number	001-37695
Entity Registrant Name	KINETA, INC./DE
Entity Incorporation State Country Code	DE
Entity Tax Identification Number	20-8436652
Entity Address Address Line1	219 Terry Ave. N.
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Entity Address City Or Town	Seattle
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Security12b Title	Common Stock, par value $0.001 per share
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Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash	$ 7,562	$ 13,143
Prepaid expenses and other current assets	281	457
Total current assets	7,843	13,600
Property and equipment, net	3	249
Operating right-of-use asset	664	1,211
Rights from Private Placement	2,070	2,250
Restricted cash	125	125
Total assets	10,705	17,435
Current liabilities:
Accounts payable	4,333	6,635
Accrued expenses and other current liabilities	1,857	3,527
Deferred revenue	0	442
Notes payable, current portion	615	0
Operating lease liability, current portion	767	843
Finance lease liabilities, current portion	43	40
Total current liabilities	7,615	11,487
Notes payable	150	748
Operating lease liability, net of current portion	0	547
Finance lease liabilities, net of current portion	51	83
Total liabilities	7,816	12,865
Commitments and contingencies (Note 6)
Shareholders' equity (deficit):
Common stock, $0.001 par value; 125,000 shares authorized as of September 30, 2023 and December 31, 2022; 10,215 and 8,318 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	10	8
Additional paid-in capital	165,839	156,106
Accumulated deficit	(163,135)	(151,690)
Total stockholders equity attributable to Kineta, Inc.	2,714	4,424
Noncontrolling interest	175	146
Total stockholders' equity	2,889	4,570
Total liabilities and stockholders' equity	$ 10,705	$ 17,435

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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	125,000,000	125,000,000
Common stock, shares issued	10,215,000	8,318,000
Common stock, shares outstanding	10,215,000	8,318,000

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Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues		$ 0	$ 200	$ 5,442	$ 1,466
Operating expenses:
Research and development		1,909	2,605	7,462	10,507
General and administrative		2,077	2,046	9,432	5,480
Total operating expenses		3,986	4,651	16,894	15,987
Loss from operations		(3,986)	(4,451)	(11,452)	(14,521)
Other (expense) income:
Interest expense (with related parties $0 for the three and nine months ended September 30, 2023 and $465 and $1,366 for the three and nine months ended September 30, 2022, respectively)		(21)	(559)	(65)	(1,699)
Change in fair value of rights from Private Placement		(1,401)	0	(180)	0
Change in fair value measurement of notes payable		(4)	(418)	(17)	(542)
(Loss) gain on extinguishments of debt, net		0	(236)	0	259
Other (expense) income, net		101	(3)	298	(17)
Total other (expense) income, net		(1,325)	(1,216)	36	(1,999)
Net income (loss)		(5,311)	(5,667)	(11,416)	(16,520)
Net (loss) income attributable to noncontrolling interest		69	(82)	29	(81)
Net income (loss) attributable to Kineta, Inc.		$ (5,380)	$ (5,585)	$ (11,445)	$ (16,439)
Net loss per share, basic		$ (0.46)	$ (1.14)	$ (1.09)	$ (3.42)
Net loss per share, diluted		$ (0.46)	$ (1.14)	$ (1.09)	$ (3.42)
Weighted-average shares outstanding, basic	[1]	11,738	4,891	10,505	4,808
Weighted-average shares outstanding, diluted	[1]	11,738	4,891	10,505	4,808
Collaboration revenue [Member]
Revenues:
Total revenues		$ 0	$ 0	$ 442	$ 0
Licensing revenues [Member]
Revenues:
Total revenues		0	0	5,000	965
Grant revenues [Member]
Revenues:
Total revenues		$ 0	$ 200	$ 0	$ 501

[1] Included in the denominator were 577,000 and 530,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2023, respectively, with an exercise price of $0.14. Included in the denominator were 155,000 and 153,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2022, respectively, with an exercise price of $0.14.

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Condensed Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Interest Expense Related Parties	$ 0	$ 465	$ 0	$ 1,366

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Condensed Consolidated Statements of Shareholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total Shareholders' Equity (Deficit) Attributable to Kineta [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2021	$ (11,949)	$ 5	$ 76,137	$ (88,282)	$ (12,140)	$ 191
Balance, Shares at Dec. 31, 2021		4,656,000
Issuance of common stock	98		98		98
Issuance of common stock, Shares		3,000
Issuance of common stock upon extinguishment of notes payable and accrued interest	235		235		235
Issuance of common stock upon extinguishment of notes payable and accrued interest, Shares		9,000
Issuance of common stock upon exercise of warrants, Shares		1,000
Stock-based compensation	285		285		285
Net income (loss)	(4,975)			(4,976)	(4,976)	1
Balance at Mar. 31, 2022	(16,306)	$ 5	76,755	(93,258)	(16,498)	192
Balance, Shares at Mar. 31, 2022		4,669,000
Balance at Dec. 31, 2021	$ (11,949)	$ 5	76,137	(88,282)	(12,140)	191
Balance, Shares at Dec. 31, 2021		4,656,000
Issuance of common stock, Shares	114,000
Stock-based compensation	$ 1,517
Net income (loss)	(16,520)
Balance at Sep. 30, 2022	(22,122)	$ 5	82,484	(104,721)	(22,232)	110
Balance, Shares at Sep. 30, 2022		4,884,000
Balance at Mar. 31, 2022	(16,306)	$ 5	76,755	(93,258)	(16,498)	192
Balance, Shares at Mar. 31, 2022		4,669,000
Issuance of common stock	905		905		905
Issuance of common stock, Shares		33,000
Issuance of common stock upon extinguishment of notes payable and accrued interest	1,064		1,064		1,064
Issuance of common stock upon extinguishment of notes payable and accrued interest, Shares		46,000
Issuance of common stock upon exercise of warrants	7		7		7
Issuance of common stock upon exercise of warrants, Shares		44,000
Note conversion discount	174		174		174
Stock-based compensation	755		755		755
Net income (loss)	(5,878)			(5,878)	(5,878)
Balance at Jun. 30, 2022	(19,279)	$ 5	79,660	(99,136)	(19,471)	192
Balance, Shares at Jun. 30, 2022		4,792,000
Issuance of common stock	$ 553		553		553
Issuance of common stock, Shares	59,000	20,000
Issuance of common stock upon extinguishment of notes payable and accrued interest	$ 1,622		1,622		1,622
Issuance of common stock upon extinguishment of notes payable and accrued interest, Shares		59,000
Issuance of common stock upon exercise of warrants	63		63		63
Issuance Of Warrants For Services	62		62		62
Issuance of Warrants in Connection with Notes Payable	47		47		47
Issuance of common stock upon exercise of warrants, Shares		3,000
Issuance of common stock upon cashless exercise of stock options		10,000
Stock-based compensation	477		477		477
Net income (loss)	(5,667)			(5,585)	(5,585)	(82)
Balance at Sep. 30, 2022	(22,122)	$ 5	82,484	(104,721)	(22,232)	110
Balance, Shares at Sep. 30, 2022		4,884,000
Balance at Dec. 31, 2022	4,570	$ 8	156,106	(151,690)	4,424	146
Balance, Shares at Dec. 31, 2022		8,318,000
Issuance of common stock	752	$ 1	751		752
Issuance of common stock, Shares		127,000
Issuance of common stock upon vesting of RSUs, Shares		23,000
Issuance of common stock upon exercise of warrants	7		7		7
Issuance of common stock upon exercise of warrants, Shares		51,000
Issuance of common stock for services	41		41		41
Issuance of common stock for services, Shares		12,000
Stock-based compensation	1,054		1,054		1,054
Net income (loss)	(6,480)			(6,451)	(6,451)	(29)
Balance at Mar. 31, 2023	(56)	$ 9	157,959	(158,141)	(173)	117
Balance, Shares at Mar. 31, 2023		8,531,000
Balance at Dec. 31, 2022	4,570	$ 8	156,106	(151,690)	4,424	146
Balance, Shares at Dec. 31, 2022		8,318,000
Stock-based compensation	3,398
Net income (loss)	(11,416)
Balance at Sep. 30, 2023	2,889	$ 10	165,839	(163,135)	2,714	175
Balance, Shares at Sep. 30, 2023		10,215,000
Balance at Mar. 31, 2023	(56)	$ 9	157,959	(158,141)	(173)	117
Balance, Shares at Mar. 31, 2023		8,531,000
Issuance of common stock	5,479	$ 1	5,478		5,479
Issuance of common stock, Shares		948,000
Issuance of common stock upon exercise of restricted stock	(69)		(69)		(69)
Issuance of common stock upon vesting of RSUs, Shares		109,000
Issuance of common stock upon exercise of warrants	10		10		10
Issuance of common stock upon exercise of warrants, Shares		144,000
Stock-based compensation			1,870		1,870
Net income (loss)	375			386	386	(11)
Balance at Jun. 30, 2023	7,609	$ 10	165,248	(157,755)	7,503	106
Balance, Shares at Jun. 30, 2023		9,732,000
Issuance of common stock upon exercise of warrants	3		3		3
Issuance of common stock upon exercise of warrants, Shares		432,000
Issuance of common stock for services	114		114		114
Issuance of common stock for services, Shares		51,000
Stock-based compensation	474		474		474
Net income (loss)	(5,311)			(5,380)	(5,380)	69
Balance at Sep. 30, 2023	$ 2,889	$ 10	$ 165,839	$ (163,135)	$ 2,714	$ 175
Balance, Shares at Sep. 30, 2023		10,215,000

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities:
Net loss	$ (11,416)	$ (16,520)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of rights from Private Placement	180	0
Change in fair value of notes payable	17	542
Non-cash stock-based compensation	3,398	1,517
Non-cash operating lease expense	547	489
Depreciation and amortization	5	39
Common stock issued for services	155	62
Gain on extinguishments of debt, net	0	(259)
Non-cash interest expense	0	47
Gain on disposal of asset	(90)	0
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	176	(2,030)
Accounts payable	(2,302)	5,206
Accrued expenses and other current liabilities	(1,739)	881
Operating lease liability	(623)	(545)
Deferred revenue	(442)	(965)
Net cash used in operating activities	(12,134)	(11,536)
Investing activities:
Purchases of property and equipment	0	(15)
Proceeds from sale of property and equipment	331	0
Net cash provided by (used in) investing activities	331	(15)
Financing activities:
Proceeds from private placement	5,479	0
Proceeds from notes payable	0	5,620
Proceeds from issuance of common stock	752	1,556
Proceeds from exercise of warrants	20	70
Repayments of notes payable	0	(4,000)
Repayments of finance lease liabilities	(29)	(29)
Net cash provided by (used in) financing activities	6,222	3,217
Net change in cash and restricted cash	(5,581)	(8,334)
Cash and restricted cash at beginning of year	13,268	11,219
Cash and restricted cash at end of year	7,687	2,885
Components of cash and restricted cash:
Cash	7,562	2,810
Restricted cash	125	75
Total cash and restricted cash	7,687	2,885
Supplemental disclosure of cash flow information:
Cash paid for interest	36	1,007
Supplemental disclosure of noncash investing and financing activities:
Issuance of common stock upon extinguishment of notes payable and accrued interest	0	3,095
Withholding to cover taxes from RSU vesting	69	0
Finance lease liabilities arising from obtaining new right-of-use assets	0	41
Issuance of warrants to purchase common stock in connection with notes payable	$ 0	$ 47

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Organization and Liquidity

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Liquidity

1.Organization and Liquidity

Description of Business

Kineta, Inc. (formerly Yumanity Therapeutics, Inc.) (together with its subsidiaries, the “Company”) is headquartered in Seattle, Washington.

The Company is a clinical-stage biotechnology company focused on developing new innovative therapies in the field of immuno-oncology and cancer. The Company also has drug programs in neurology (chronic pain) and an antiviral drug program in development for arenaviruses such as Lassa fever. Kineta Chronic Pain, LLC (“KCP”) was formed to develop new innovative therapies for pain management. Kineta Viral Hemorrhagic Fever, LLC (“KVHF”) was formed to develop a direct acting anti-viral therapy for the treatment of emerging diseases.

As of September 30, 2023 and December 31, 2022, the Company owns a majority interest of the outstanding issued equity of KCP and all of the outstanding issued equity of KVHF.

Private Placement

In connection and concurrently with the execution of the Merger Agreement, the Company entered into a financing agreement, dated as of June 5, 2022, as amended on October 24, 2022, December 5, 2022, March 29, 2023, May 1, 2023, July 21, 2023 and October 13, 2023 (such financing agreement, as amended, the “Securities Purchase Agreement”), to sell shares of the Company’s common stock in a private placement (the “Private Placement”). The first closing of the Private Placement occurred on December 16, 2022, and the Company issued 649,346 shares of its common stock and received net proceeds of $7.4 million. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024. The Company has the ability to unilaterally terminate the Securities Purchase Agreement until the date of the second closing.

Liquidity

The Company has incurred recurring net losses and negative cash flows from operations since inception and, as of September 30, 2023, had an accumulated deficit of $163.1 million. The net loss attributable to the Company was $5.3 million for the three months ended September 30, 2023 and $11.4 million for the nine months ended September 30, 2023. As of September 30, 2023, the Company had unrestricted cash of $7.6 million. The Company’s cash as of September 30, 2023, together with the $2.7 million net proceeds received in October 2023 from the registered direct offering plus the committed proceeds of $22.5 million pursuant to the second closing of the Private Placement, will be sufficient to fund operating expenses and capital expenditure requirements into early 2025.

The Company will need to raise additional capital to support its long-term plans and to complete clinical trials. The Company intends to raise additional debt and equity financings from its current investors as well as prospective investors and may receive milestone payments from its license agreements, or other sources. However, there is no guarantee that any of these additional financings or opportunities will be executed or realized on acceptable terms, if at all. The Company’s ability to raise additional capital through either the issuance of equity or debt is dependent on a number of factors including, but not limited to, Company prospects, which itself is subject to a number of development and business risks and uncertainties, as well as uncertainty about whether the Company would be able to raise such additional capital at a price or on terms that are acceptable.

Geopolitical Developments

Geopolitical developments, such as the Russian invasion of Ukraine or deterioration in the bilateral relationship between the United States and China, may impact government spending, international trade and market stability, and cause weaker macro-economic conditions. The impact of these developments, including any resulting sanctions, export controls or other restrictive actions that may be imposed against governmental or other entities in, for example, Russia, have in the past contributed and may in the future contribute to disruption, instability and volatility in the global markets, which in turn could adversely impact the Company’s operations and weaken the Company’s financial results. Certain political developments may also lead to uncertainty to regulations and rules that may materially affect the Company’s business.

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2.Summary of Significant Accounting Policies

Unaudited Interim Financial Information

The unaudited condensed consolidated balance sheet as of December 31, 2022 was derived from the Company’s audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”). The accompanying unaudited condensed consolidated financial statements, as of September 30, 2023 and for the three and nine months ended September 30, 2023, are unaudited and have been prepared by the Company pursuant to the rules and regulations of the SEC for interim financial

statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. The Company believes that the disclosures are adequate to make the information presented not misleading. There have been no changes to the Company’s significant accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on March 31, 2023 (the “2022 Annual Report on Form 10-K”). These unaudited condensed financial statements should be read in conjunction with the Company’s audited financial statements and the notes thereto for the year ended December 31, 2022 included in the 2022 Annual Report on Form 10-K. In the opinion of management, all adjustments, consisting only of normal recurring adjustments necessary for a fair statement of the Company’s condensed consolidated financial position as of September 30, 2023 and condensed consolidated results of operations and cash flows for the three and nine months ended September 30, 2023 and 2022 have been made. The results of operations for the three and nine months ended September 30, 2023 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2023.

Basis of Presentation and Consolidation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. GAAP and applicable SEC rules. The condensed consolidated financial statements include all accounts of the Company, its majority owned subsidiary KCP, and its wholly owned subsidiary, KVHF. All intercompany transactions and balances have been eliminated upon consolidation.

Noncontrolling interest in the accompanying condensed consolidated financial statements represents the proportionate share of equity which is not held by the Company. Net income (loss) of the non-wholly owned consolidated subsidiary is allocated to the Company and the holder(s) of the noncontrolling interests in proportion to their percentage ownership considering any preferences specific to the form of equity of the subsidiaries.

Revenue Recognition

Collaboration Revenues

In connection with the Merger, the Company became the successor in interest to an exclusive license and research collaboration agreement (the “Merck Neuromuscular License Agreement”) with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis. The Company recognizes revenue using the cost-to-cost method, which it believes best depicts the transfer of control to the customer. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of actual costs incurred to the total estimated costs expected upon satisfying the identified performance obligation. Under this method, revenue is recognized as a percentage of actual cost incurred to the estimated costs to complete. The Company recognized collaboration revenues of zero for the three months ended September 30, 2023 and $442,000 for the nine months ended September 30, 2023. As of June 30, 2023, the Company completed its project services under the Merck Neuromuscular License Agreement.

License Revenues

In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. Revenue from such milestones is recognized when the accomplishment of the milestone is deemed probable. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. As a result, the Company is eligible to receive up to an additional $255.0 million in development milestones, sales milestones and royalties on net sales. The Company recognized licensing revenues of zero for the three months ended September 30, 2023 and $5.0 million for the nine months ended September 30, 2023 under the Merck Neuromuscular License Agreement and has no further obligations under the Merck Neuromuscular License Agreement.

Net loss per share

Basic net loss per common share is computed by dividing the net loss by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per common share is computed by dividing net loss by the weighted average number of common shares outstanding for the period, including potential dilutive common shares assuming the dilutive effect of outstanding common share equivalents. Diluted net loss per share is the same as basic net loss per share, since the effects of potentially dilutive securities are antidilutive given the net loss for each period presented. In computing basic net loss per share, nominal issuances of common stock, including warrants to purchase the Company’s common stock with an exercise price of $0.14 per share, are reflected in basic net loss per share for all periods, even if antidilutive.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

3.Fair Value Measurements

The carrying amounts of the Company’s financial instruments, including cash, restricted cash, and accounts payable, approximate fair value due to the short-term nature of those instruments.

Rights from Private Placement

The Company determined that the rights from Private Placement is a derivative asset, which requires the asset to be accounted for at fair value. The fair value was determined using a Monte Carlo simulation based on the contractual funding date of July 25, 2023, minimum purchase price of $3.18 and historical stock prices. The significant unobservable inputs used in the fair value measurement as of September 30, 2023 were as follows: volatility of 86%, risk-free interest rate of 5.40% and funding probability of 75%, which resulted in a loss in fair value of $1.4 million for the three months ended September 30, 2023 and a loss of $0.2 million for the nine months ended September 30, 2023, which is recorded in other income (expense) in the Statement of Operations. The fair value measurement as of September 30, 2023 was approximately $2.1 million.

The following table provides a summary of the changes in the fair value of the rights from Private Placement measured using Level 3 inputs:

	Nine Months Ended September 30,
	2023			2022
	(in thousands)
Balance at beginning of period	$	2,250		$	—
Change in fair value of rights from Private Placement		(180	)		—
Balance at end of period	$	2,070		$	—

2022 & 2020 Notes Payable

The Company elected the fair value option to account for certain convertible notes payable and notes payable, referred to as the 2022 convertible notes, 2020 convertible notes and 2020 notes (see Note 5), respectively, and collectively the 2022 & 2020 notes payable. The 2020 convertible notes and 2020 notes are referred to as the 2020 notes payable. Upon the closing of the Merger in December 2022, the 2022 convertible notes and 2020 convertible notes were settled with shares of the Company’s common stock (see Note 5).

2020 Notes

The 2020 notes were valued using a discounted cash flow model based on the contractual payment dates, a discount rate and the contractual maturity date. The significant unobservable inputs used in the fair value measurement of the 2020 note for the three months ended September 30, 2023 were as follows: discount rate of 14.0% and contractual payment date of 0.8 year, which resulted in a fair value for the 2020 note of $236,000.

The significant unobservable inputs used in the fair value measurement of the 2020 notes for the three months ended September 30, 2022 were as follows: discount rate ranging from 11.3% to 11.7% and contractual payment dates ranging from 0.1 years to 2.4 years, which resulted in a fair value of the 2020 notes ranging from $1.6 million to $2.9 million.

2020 Convertible Notes

The 2020 convertible notes were valued using a scenario-based analysis and a discounted cash flow model. Two primary scenarios were considered: the qualified financing scenario and the repayment scenario. The value of the 2020 convertible notes under each scenario was probability weighted to arrive at the estimated fair value for the notes. The qualified financing scenario considers the value impact of conversion at the stated discount to the

issue price if the Company completes a qualifying financing event before the maturity date. The repayment scenario considers payment of principal at the contractual maturity dates.

There were no 2020 convertible notes as of September 30, 2023 as they were converted upon the closing of the Merger. The significant unobservable inputs used in the fair value measurement of the 2020 convertible notes for the three months ended September 30, 2022 were as follows: discount rate ranging from 11.3% to 41.2%, timing of the qualified financing ranging from 0.2 years to 0.75 years, timing of the repayment scenarios based on contractual maturity dates ranging from 0.25 years to 1.25 years, probability of a qualified financing ranging from 80% to 90% and probability of repayment ranging from 10% to 20%, which resulted in a fair value range for the 2020 convertible notes of $11.3 million to $16.2 million.

2022 Convertible Notes

The 2022 convertible notes were valued using a scenario-based analysis and a discounted cash flow model. Two primary scenarios were considered: the qualified financing scenario and the automatic conversion scenario. The value of the 2022 convertible notes under each scenario was probability weighted to arrive at the estimated fair value for the notes. The qualified financing scenario considers the value impact of conversion at the stated discount to the issue price if the Company completes a qualifying financing event before the maturity date. The automatic conversion scenario estimates the timing of such conversion.

There were no 2022 convertible notes as of September 30, 2023 as they were converted upon the closing of the Merger. The significant unobservable inputs used in the fair value measurement of the 2022 convertible notes for the three months ended September 30, 2022 were as follows: discount rate ranging from 33.6% to 41.2%, timing of the qualified financing ranging from 0.2 years to 0.6 years, timing of the automatic conversion scenario ranging from 0.4 years to 1.0 year, probability of a qualified financing ranging from 80% to 90% and probability of automatic conversion ranging from 10% to 20%, which resulted in a fair value of these 2022 convertible notes ranging from $4.8 million to $5.3 million.

The following table provides a summary of the changes in the fair value of the Company’s 2022 & 2020 notes payable measured using Level 3 inputs:

	Nine Months Ended September 30,
	2023		2022
	(in thousands)
Balance at beginning of period	$	219	$	17,830
Issuance of 2022 convertible notes		—		5,620
Change in fair value of 2022 & 2020 notes payable		17		542
Partial settlement of 2020 notes payable		—		(5,973	)
Balance at end of period	$	236	$	18,019

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Balance Sheet Components

9 Months Ended

Sep. 30, 2023

Statement of Financial Position [Abstract]

Balance Sheet Components

4.Balance Sheet Components

Property and Equipment, Net

Property and equipment, net consisted of the following:

	September 30, 2023		December 31, 2022
	(in thousands)
Laboratory equipment	$	—	$	779
Computer and software		67		73
Leasehold improvements		14		14
Total property and equipment		81		866
Less: Accumulated depreciation and amortization		78		617
Total property and equipment, net	$	3	$	249

Depreciation and amortization expense was $1,000 for the three months ended September 30, 2023 and $5,000 for the nine months ended September 30, 2023. Depreciation and amortization expense was $15,000 for the three months ended September 30, 2022 and $39,000 for the nine months ended September 30, 2022. The Company has acquired certain laboratory equipment under agreements that are classified as finance leases. The carrying value of the equipment under finance leases included in the balance sheet as property and equipment was zero as of September 30, 2023 and $125,000 as of December 31, 2022, net of accumulated depreciation. During the three months ended September 30, 2023, the Company disposed of assets with a net carrying value of $29,000 and received proceeds of $28,000. During the nine months ended September 30, 2023, the Company disposed of assets with a net carrying value of $241,000 and received proceeds of $331,000.The Company recorded a gain on disposal of fixed assets, which is recorded in other income (expense) in the Statement of Operations.

Rights from Private Placement

In connection and concurrently with the execution of the Merger Agreement, the Company entered into the Securities Purchase Agreement to sell shares of the Company’s common stock in the Private Placement. The first closing of the Private Placement occurred on December 16, 2022, and the Company issued 649,346 shares of its common stock and received net proceeds of $7.4 million. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024. With respect to the second closing, the Company is obligated to sell and issue a number of shares of its common stock and the investors are obligated to buy such shares by the specified date and price equal to the volume-weighted average price of Company common stock for the five trading days prior to April 15, 2024 (“VWAP”) plus 10% of the VWAP; provided, however, that the share purchase price shall be at least equal to the closing price of the Company’s common stock on March 29, 2023. The Company has recorded a $2.1 million rights from Private Placement asset as of September 30, 2023 for the future right associated with the second closing.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following as of the periods presented:

	September 30, 2023		December 31, 2022
	(in thousands)
Compensation and benefits	$	980	$	745
Accrued clinical trial and preclinical costs		304		404
Accrued interest		158		132
Professional services		64		2,176
Other		351		70
Total accrued expenses and other current liabilities	$	1,857	$	3,527

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Notes Payable

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Note Payable

5.Notes Payable

Notes payable outstanding consisted of the following as of the periods presented:

	September 30, 2023				December 31, 2022
	Principal		Fair Value		Principal		Fair Value
	(in thousands)
Notes payable:
2020 notes	$	250	$	236	$	250	$	219
Other notes payable		379		379		379		379
Small Business Administration loan		150		150		150		150
Total notes payable	$	779		765	$	779		748
Less: current portion				615				—
Notes payable, net of current portion			$	150			$	748

The Company elected the fair value option for the 2020 notes (see Note 3). The other notes payable and Small Business Administration loan approximate their fair value because interest rates are at prevailing market rates.

Expected future minimum principal payments under the Company’s notes payables as of September 30, 2023 were as follows:

	Total
	(in thousands)
Years
Remainder of 2023	$	—
2024		629
2025		0
2026		0
2027		2
Thereafter		148
Total notes payable	$	779
Less: current portion		615
Notes payable, net of current portion	$	164

2020 Notes

In October 2020, the Company refinanced certain notes payable (the “2020 notes”), with an aggregate principal amount of $3.0 million with various investors, including one investor that is a related party (see Note 14). The interest rate was reduced on the 2020 notes from 16.0% to 6.0% from October 2020 until the earlier of (i) the Company raises at least $25.0 million in a single transaction or series of transactions after October 2020 and (ii) the original maturity dates (that is, various dates in the first quarter of 2022), after which the interest rate increases to 16.0%. The outstanding principal is due upon demand of the majority of the lenders with respect to (i) 50% on or after nine months after the original maturity date (or on or after various dates in the fourth quarter of 2022) and (ii) 50% on or after fifteen months after the original maturity date (or on or after various dates in the second quarter of 2023). The Company may repay the 2020 notes at any time without penalty. Upon bankruptcy the lender can accelerate all amounts due immediately.

In August 2022, the Company settled $1.4 million in outstanding principal and accrued interest by issuing 59,000 shares of the Company’s non-voting common stock at a 15% discount. The Company extended the maturity date for the remaining 2020 note with a principal balance of $250,000

to July 31, 2024 and reduced the interest rate to 6%, which was accounted for as a modification. As the 2020 notes were valued pursuant to the fair value election, an immaterial gain was recognized upon extinguishment.

Other Notes Payable

The Company issued several other notes payable in 2019 and early 2020 at a 12.0% interest rate per annum, with the principal amounts due in full at maturity and interest due monthly or quarterly. The other notes payable were due to mature at various dates between December 2020 through early 2022.

The other notes payable were amended in October 2020 to increase the interest rate to 13.0% and extend the maturity date to be on demand by a majority of the holders on or after April 7, 2022, which resulted in a modification of the other notes payable. The Company may prepay the other notes payable at any time without penalty. In April 2022, the Company extended the maturity date for the remaining other notes payable with a principal balance of $379,000 to June 30, 2024 and decreased the interest rate to 6.0% interest, which was accounted for as a modification. As the other notes payable approximated their fair value, no gain or loss was recognized upon extinguishment.

Small Business Administration Loan

In August 2020, the Company received a U.S. Small Business Administration loan of $150,000 at a 3.75% interest rate and maturing in August 2050. Repayments of principal are due monthly beginning in June 2027 and interest is due monthly.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

6.Commitments and Contingencies

Leases

Operating Lease

The Company leases office and laboratory premises in Seattle, Washington pursuant to a lease agreement that commenced in April 2011 and expires in July 2024. The agreement requires monthly lease payments, is subject to annual rent escalations during the lease term, and contains two five-year options to extend the lease term. In June 2020, the Company amended the lease agreement to reduce the leased space for the premises from approximately 22,064 square feet to approximately 14,870 square feet, which was accounted for as a lease modification and partial termination of the lease.

Under the lease agreement, the Company is required to pay certain operating costs, in addition to rent, such as common area maintenance, taxes and utilities. Such additional charges are considered variable lease costs and are recognized in the period in which they are incurred. Rent expense was $208,000 for the three months ended September 30, 2023 and variable costs were $137,000. Rent expense was $658,000 for the nine months ended September 30, 2023 and variable costs were $447,000. Rent expense was $208,000 for the three months ended September 30, 2022 and variable costs were $124,000. Rent expense was $624,000 for the nine months ended September 30, 2022 and variable costs were $386,000.

The Company’s operating leases include various covenants, indemnities, defaults, termination rights, security deposits and other provisions customary for lease transactions of this nature.

Future undiscounted payments due under the operating lease as of September 30, 2023 were as follows:

Years	(in thousands)
Remainder of 2023	$	235
2024		561
Total undiscounted lease payments		796
Less: Imputed interest		(29	)
Operating lease liability		767
Less: Operating lease liability, current portion		(767	)
Operating lease liability, net of current portion	$	—

Supplemental information on the Company’s operating leases was as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Cash paid for operating lease agreement (in thousands)	$	235		$	228		$	701		$	681
Remaining lease term (in years)		0.8			1.8			0.8			1.8
Incremental borrowing rate		10	%		10	%		10	%		10	%

The Company subleases portions of its premises in Seattle, Washington to third parties. Under the first sublease agreement, which commenced in December 2017, the Company subleases approximately 1,850 square feet. In October 2020 the sublease expiration date was extended from December 2020 to December 2022. In September 2022, the sublease expiration date was extended from December 2022 to December 2023. Under the second sublease agreement, which commenced in January 2019 and expired in June 2020, the Company subleased approximately 7,194 square feet. Sublease income is recorded within operating expenses and was $49,000 for the three months ended September 30, 2023 and $146,000 for the nine months ended September 30, 2023. Sublease income was $47,000 for the three months ended September 30, 2022 and $141,000 for the nine months ended September 30, 2022. As of September 30, 2023, the total minimum rentals to be received under the remaining noncancelable sublease was $30,000.

Finance Leases

Future undiscounted payments due under finance lease liabilities as of September 30, 2023 were as follows:

Years	(in thousands)
Remainder of 2023	$	12
2024		50
2025		32
2026		10
Total undiscounted lease payments		104
Less: Imputed interest		(10	)
Financing lease liabilities		94
Less: Financing lease liabilities, current portion		(43	)
Financing lease liabilities, net of current portion	$	51

Supplemental information on the Company’s financing leases was as follows (cash paid for finance lease agreements was not material):

	September 30, 2023			December 31, 2022
Weighted average remaining lease term (in years)		2.3			3.2
Incremental borrowing rate		9.3	%		9.3	%

Indemnification

In the ordinary course of business, the Company enters into agreements that may include indemnification provisions. Pursuant to such agreements, the Company may indemnify, hold harmless and defend an indemnified party for losses suffered or incurred by the indemnified party. Some of the provisions will limit losses to those arising from third-party actions. In some cases, the indemnification will continue after the termination of the agreement. The maximum potential amount of future payments the Company could be required to make under these provisions is not determinable. The Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification provisions. The Company has also entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers to the fullest extent permitted under the Delaware General Corporation Law. The Company currently has directors’ and officers’ insurance.

Other Commitments

The Company has various manufacturing, clinical, research and other contracts with vendors in the conduct of the normal course of its business. Such contracts are generally terminable with advanced written notice and payment for any products or services received by the Company through the effective time of termination and any noncancelable and nonrefundable obligations incurred by the vendor at the effective time of the termination. In the case of terminating a clinical trial agreement at a particular site, the Company would also be obligated to provide continued support for appropriate medical procedures at that site until completion or termination.

Executive Employment Agreements

On September 20, 2022, the Company entered into an at-will employment agreement (“Baker Employment Agreement”), which became effective on October 3, 2022, with Keith Baker, its Chief Financial Officer. On September 28, 2022, the Company entered into at-will employment agreements (together with the Baker Employment Agreement, the “Executive Employment Agreements”), which became effective on December 16, 2022 upon the closing of the Merger, with Shawn Iadonato, its Chief Executive Officer, Craig Philips, its President and Pauline Kenny, its General Counsel. On April 23, 2023, the Company’s board of directors (the “Board”) approved salary increases effective at the next payroll period and bonus increases for fiscal year 2023 to Shawn Iadonato, Craig Philips, Keith Baker, and Pauline Kenny.

The Executive Employment Agreements provide that, if the executive’s employment is terminated without Cause (as defined in the Executive Employment Agreements) or the executive resigns for Good Reason (as defined in the Executive Employment Agreements), provided that the executive signs the Release (as defined in the Executive Employment Agreement), the executive will be entitled to (i) accrued compensation, (ii) 39 weeks of pay (52 weeks in the case of Chief Executive Officer) (currently estimated at approximately $1.3 million in the aggregate), (iii) nine (9) months of COBRA benefits (12 months in the case of Chief Executive Officer) for executive and eligible dependents, and (iv) three (3) additional months of vesting of unvested and outstanding equity awards. If executive’s employment is terminated without Cause or the executive resigns for

Good Reason within the Change in Control Protection Period (as defined in the Executive Employment Agreements), then in addition to (i)-(iv) above, executive will receive current year pro-rated cash bonus.

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Strategic License Agreements

9 Months Ended

Sep. 30, 2023

License Agreements Disclosure [Abstract]

Strategic License Agreements

7.Strategic License Agreements

Anti-VISTA Antibody Program License Agreement

In connection with the Company’s research into innovative immuno-oncology drug targets, the Company acquired rights to a group of fully human antibodies from Gigagen, Inc., a wholly owned subsidiary of Grifols, S.A. (“Gigagen”). Pursuant to a material transfer agreement with Gigagen dated August 2019 (the “2019 MTA”), the Company performed research activities to assess Gigagen’s anti-VISTA antibodies. Under an option and license agreement effective as of August 10, 2020, as amended in November 2020, and as further amended in May 2023, the parties agreed to terminate the 2019 MTA and Gigagen granted the Company a research license to continue additional evaluation of certain anti-VISTA antibodies. Gigagen also granted the Company an exclusive option to obtain an exclusive license to develop, manufacture and commercialize certain anti-VISTA antibodies during the option term commencing on the effective date and ended on December 31, 2020. The option and license agreement provides for a payment to Gigagen of $0.2 million within five days after the effective date. In addition, upon the Company’s exercise of its option during the option term, within 60 days after such date the Company is obligated to, among other things, (i) pay Gigagen an upfront option exercise fee of $0.4 million, and (ii) issue Gigagen non-voting common stock of the Company having an aggregate then-current fair market value of $0.25 million. The Company is also obligated to pay Gigagen (i) development and regulatory milestones of less than $21 million based on achievement of certain predetermined milestones, (ii) sales milestones up to an aggregate of $11.0 million based on net sales thresholds, and (iii) royalties in the low-single digits on net sales for each licensed product sold by the Company during the term of the agreement. The Company accounted for the acquisition of rights as an asset acquisition because it did not meet the definition of a business. The Company recorded the upfront payment to Gigagen as research and development expense in the consolidated statements of operations because the acquired rights represented in-process research and development that have no alternative future use. From inception of the 2019 MTA through September 30, 2023, the Company has incurred $500,000 in milestone expense and zero in royalties under the 2019 MTA.

Anti-CD27 Agonist Antibody Program License Agreement

In connection with the Company’s research into innovative immuno-oncology drug targets, the Company acquired rights to a group of fully human antibodies from Gigagen directed to CD27. Pursuant to a material transfer agreement with Gigagen dated October 28, 2020, as amended in April 2021 (the “2020 MTA”), the Company performed research activities to assess Gigagen’s anti-CD27 agonist antibodies. Under an option and license agreement effective as of June 9, 2021, as amended in August 2022, as further amended in December 2022, and as further amended in May 2023, the parties agreed to terminate the 2020 MTA, Gigagen granted the Company a research license to continue additional evaluation of certain anti-CD27 agonist antibodies and also granted the Company an exclusive option to obtain an exclusive license to develop, manufacture and commercialize certain antibodies targeting CD27 during the option term commencing on the effective date and ending on December 31, 2022. The option and license agreement provides for the Company to pay Gigagen (i) an insignificant exclusivity payment within 60 days after the effective date, and (ii) an insignificant evaluation payment due by March 16, 2022. In addition, upon the Company’s exercise of its option, within 60 days after such option exercise date, the Company is obligated to, among other things, (i) pay Gigagen an upfront option exercise fee of $0.1 million, and (ii) issue Gigagen non-voting common stock of the Company having an aggregate then-current fair market value of $0.25 million. The Company is also obligated to pay Gigagen (i) development and regulatory milestones of less than $21 million based on achievement of certain predetermined milestones, (ii) sales milestones up to an aggregate of $11.0 million based on net sales thresholds, and (iii) royalties in the low-single digits on net sales for each licensed product sold by the Company during the term of the agreement.

The Company accounted for the acquisition of rights as an asset acquisition because it did not meet the definition of a business. From inception of the 2020 MTA through September 30, 2023, none of the milestones have been achieved and no royalties were due under the agreement.

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Shareholders' Equity

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Shareholders' Equity

8.Stockholders’ Equity

Warrants to Purchase Common Stock

As of September 30, 2023, the Company had issued and outstanding warrants to purchase shares of the Company’s common stock as follows, which all met the condition for equity classification (in thousands):

Year Issued	Expiration Date	Number Outstanding as of December 31, 2022		Issued		Exercised			Cancelled/Expired			Number Outstanding as of September 30, 2023		Range of Exercise Price
2013			12		—		—			(12	)		—
2017	November 2023 - June 2025		131		—		—			—			131	$0.14 - $21.80
2019	March 2025 - April 2027		44		—		—			—			44	$0.14 - $21.80
2020	October 2023		45		—		(1	)		(4	)		40	$	0.14
2022	August 2025 - December 2029		301		—		(149	)		—			152	$0.14 - $168.35
2023	April 2028 - October 2028		—		1,973		(477	)		—			1,496	$4.08 - $5.26
Total number of shares    underlying warrants			533		1,973		(627	)		(16	)		1,863

Equity Raises - Registered Direct Offering

April 2023

On April 20, 2023, the Company entered into a Securities Purchase Agreement (the “April 2023 Purchase Agreement”) with an institutional investor (the “April 2023 Investor”), pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of The Nasdaq Stock Market LLC (“Nasdaq”) (such offering, the “April 2023 Registered Offering”), (i) an aggregate of 948,000 shares of its common stock, at a purchase price of $4.21 per share and (ii) pre-funded warrants exercisable for up to 477,179 shares of its common stock (the “April 2023 Pre-Funded Warrants”) to the April 2023 Investor at a purchase price of $4.209 per April 2023 Pre-Funded Warrant, for aggregate gross proceeds from the April 2023 Registered Offering of approximately $6.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each April 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The April 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the April 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “April 2023 Private Placement” and, together with the April 2023 Registered Offering, the “April 2023 Offering”), the Company issued to the April 2023 Investor warrants to purchase up to 1,425,179 shares of common stock (the “April 2023 Common Warrants”) at an exercise price of $4.08 per share. The April 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the April 2023 Offering, the Company entered into an engagement letter with H.C. Wainwright & Co., LLC (“Wainwright”), pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the April 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $420,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $520,000, which resulted in net proceeds to the Company of $5.5 million. On April 24, 2023, the Company also issued to Wainwright or its designees warrants to purchase 71,259 shares of common stock (the “April 2023 Wainwright Warrants”). The April 2023 Wainwright Warrants have a term of five years from the commencement of sales in the April 2023 Offering, and have an exercise price of $5.2625 per share.

October 2023

On October 3, 2023, the Company, entered into a Securities Purchase Agreement (the “October 2023 Purchase Agreement”) with an institutional investor (the “October 2023 Investor”) pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of Nasdaq (such offering, the “October 2023 Registered Offering”), (i) an aggregate of 110,000 shares of its common stock, at a purchase price of $3.37 per share, and (ii) pre-funded warrants exercisable for up to 780,208 shares of its common stock (the “October 2023 Pre-Funded Warrants”) to the October 2023 Investor at a purchase price of $3.369 per October 2023 Pre-Funded Warrant, for aggregate gross proceeds from the October 2023 Registered Offering of approximately $3.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each October 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The October 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the October 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “October 2023 Private Placement” and, together with the October 2023 Registered Offering, the “October 2023 Offering”), the Company issued to the October 2023 Investor warrants to purchase up to 890,208 shares of common stock (the “October 2023

Common Warrants”) at an exercise price of $3.25 per share. The October 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the October 2023 Offering, the Company entered into an engagement letter with Wainwright, pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the October 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $210,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $310,000, which resulted in net proceeds to the Company of $2.7 million. On October 5, 2023, the Company also issued to Wainwright or its designees warrants to purchase 44,510 shares of common stock (the “October 2023 Wainwright Warrants”). The October 2023 Wainwright Warrants have a term of five years from the commencement of sales in the October 2023 Offering, and have an exercise price of $4.2125 per share.

Warrant Exercises

During the three months ended September 30, 2023, the Company issued 432,000 shares of its common stock upon exercise of warrants and received proceeds of $3,000. During the nine months ended September 30, 2023, the Company issued 627,000 shares of its common stock upon exercise of warrants and received proceeds of $20,000. The exercise price of all shares exercised during the nine months ended September 30, 2023 ranged from $0.001 to $0.14.

As of September 30, 2022, the Company had issued and outstanding warrants to purchase shares of the Company’s common stock as follows, which all met the condition for equity classification (in thousands):

Year Issued	Expiration Date	Number Outstanding as of December 31, 2021		Issued		Exercised			Cancelled/Expired			Number Outstanding as of September 30, 2022		Range of Exercise Price
2013	April 2023		12		—		—			—			12	$	10.17
2017	December 2022 - June 2025		203		—		(20	)		(35	)		148	$0.14 - $23.25
2019	October 2022 - April 2027		50		—		(5	)		(1	)		44	$0.14 - $21.80
2020	February 2023 - October 2023		73		—		(23	)		—			50	$0.14 - $26.88
2022	August 2025 - September 2025		—		4		—			—			4	$	0.14
Total number of shares    underlying warrants			338		4		(48	)		(36	)		258

During the three months ended September 30, 2022, the Company issued 3,000 shares of its common stock upon exercise of warrants and received proceeds of $63,000. During the nine months ended September 30, 2022, the Company issued 48,000 shares of its common stock upon exercise of warrants and received proceeds of $70,000. The exercise price of all shares exercised during the nine months ended September 30, 2022 ranged from $0.14 to $26.88.

Common Stock

As of September 30, 2023, there were 10,214,945 shares of common stock issued and outstanding.

Common stock reserved for future issuance consisted of the following as the period presented:

	September 30, 2023
	(in thousands)
Shares reserved for stock options and restricted stock units to purchase    common stock under equity incentive plans		2,020
Shares reserved for future issuance of equity awards		932
Shares reserved for exercise of warrants		1,863
Total		4,815

During the three months ended September 30, 2023, the Company issued 51,000 shares of its common stock for professional services and recorded $114,000 as consulting expense within general and administrative expense.

During the nine months ended September 30, 2023, the Company sold 126,503 shares of its common stock to individual investors under the Sales Agreement (as defined below) and received net proceeds of $0.8 million in connection with the ATM (as defined below) equity offering program.

During the nine months ended September 30, 2023, the Company issued 63,000 shares of its common stock for professional services and recorded $155,000 as consulting expense within general and administrative expense.

During the three months ended September 30, 2023, the Company issued 432,000 shares of its common stock upon exercise of warrants and received proceeds of $3,000. During the nine months ended September 30, 2023, the Company issued 627,000 shares of its common stock upon exercise of warrants and received proceeds of $20,000. The exercise price of all shares exercised ranged from $0.001 to $0.14.

During the nine months ended September 30, 2023, the Company issued 132,000 shares of its common stock upon vesting of restricted stock units. 100,000 shares were issued to members of the Company’s executive management, 10,000 shares were issued to directors of the Company and 22,000 were issued to employees, former employees and former Board members.

During the three months ended September 30, 2022, the Company sold 20,000 shares of its common stock to individual investors and received net proceeds of $553,000. During the nine months ended September 30, 2022, the Company sold 56,000 shares of its common stock to individual investors and received net proceeds of $1.6 million.

During the three months ended September 30, 2022, outstanding principal and accrued interest under the other notes payable of $1.6 million was settled by issuing 59,000 shares of the Company’s common stock at fair value (based on a recent valuation) to the holders. During the nine months ended September 30, 2022, outstanding principal and accrued interest under the other notes payable of $2.9 million was settled by issuing 114,000 shares of the Company’s common stock at fair value (based on a recent valuation) to the holders.

During the three months ended September 30, 2022, the Company issued 3,000 shares of its common stock upon exercise of warrants and received proceeds of $63,000. During the nine months ended September 30, 2022, the Company issued 48,000 shares of its common stock upon exercise of warrants and received proceeds of $70,000. The exercise price of all shares exercised ranged from $0.14 to $26.88.

Private Placement

The Private Placement (see Note 1) provides for the issuance of shares of the Company’s common stock in two closings, one of which occurred immediately following the closing of the Merger and one of which is expected to occur on April 15, 2024. The first closing of the Private Placement occurred on December 16, 2022 and the Company issued 649,346 shares of its common stock and received net proceeds of $7.4 million to investors that are related parties.

In connection with the Private Placement in December 2022, the Company issued 104,000 warrants to purchase shares of the Company’s non-voting common stock to investors in the Private Placement, each at an exercise price of $0.14, with exercise contingent upon the Merger closing and exercisable following the first closing of the Private Placement. The Company determined the contingent exercise provisions were indexed to the Company’s operations and the warrants qualified for equity classification.

The second closing of the Private Placement is expected to occur on April 15, 2024, at which time the Company will be obligated to issue a number of shares of its common stock based on the aggregate purchase price of $22.5 million divided by the purchase price equal to (a) the VWAP, plus (b) 10% of the VWAP; provided, however, that the share purchase price shall be at least equal to the closing price of the Company’s common stock on March 29, 2023. The Company determined that its obligation to issue additional shares of its common stock in the second closing at a premium to the VWAP was a freestanding financial instrument and a future right, which is subject to fair value. Accordingly, at inception the future right was recorded as an other asset in the Company’s consolidated balance sheet at its fair value equal to 10% of the second closing amount, or $2.3 million. The remaining proceeds from the first closing were allocated to the shares of common stock issued in the first closing and to the warrants as such instruments are equity-classified. The future right is subject to remeasurement at each reporting date and the Company has used the Monte Carlo simulation method to determine fair value of approximately $2.1 million as of September 30, 2023. The Company incurred insignificant issuance costs related to the Private Placement.

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Collaboration Agreement

9 Months Ended

Sep. 30, 2023

Revenue Recognition and Deferred Revenue [Abstract]

Collaboration Agreement

9.Collaboration Agreement

The following table shows the activity for the Company’s collaboration revenue agreement and deferred revenue (in thousands):

	September 30,
	2023			2022
	(in thousands)
Balance as of beginning of period	$	442		$	—
Decrease for provision of research services		(442	)		—
Balance as of end of period	$	—		$	—

Merck

In connection with the Merger, the Company became the successor in interest to the Merck Neuromuscular License Agreement with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis (“ALS”). As of December 31, 2022, the Company had $442,000 in deferred revenue under the Merck Neuromuscular License Agreement. The Company recognized zero in revenue for the three months ended September 30, 2023 and $442,000 for the nine months ended September 30, 2023. The Company recognized revenue of zero for the three and nine months ended September 30, 2022. As of September 30, 2023, the Company had zero in deferred revenue under the Merck Neuromuscular License Agreement.

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Grants Agreement

9 Months Ended

Sep. 30, 2023

Research and Development [Abstract]

Grant Agreements

10.Grant Agreement

National Institutes of Health

The Company was awarded a cost-reimbursable grant from the National Institutes of Health (the “NIH”), a federal medical research agency supporting scientific studies, to support the Company’s research studies for arenavirus hemorrhagic fever. This award was based on budgeted direct and indirect costs and may only be used for budgeted costs as allowable under certain government regulations and NIH’s policy and compliance requirements, subject to government audit. This award was $1.1 million for the budget period January 2021 to December 2021, which was later extended to December 31, 2022.

The Company recognized grant revenue under this grant of zero for the three and nine months ended September 30, 2023. The Company recognized grant revenue of $200,000 for the three months ended September 30, 2022 and $501,000 for the nine months ended September 30, 2022.

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Licensing Revenue Agreement

9 Months Ended

Sep. 30, 2023

Revenue Recognition and Deferred Revenue [Abstract]

Licensing Revenue Agreement

11.Licensing Revenue Agreements

The following table shows the activity for the Company’s licensing revenue agreements and deferred revenue (in thousands):

	September 30,
	2023		2022
	(in thousands)
Balance as of beginning of period	$	—	$	1,041
Decrease for provision of research services		—		(965	)
Balance as of end of period	$	—	$	76

Genentech, Inc.

In April 2018, the Company entered into an exclusive option and license agreement with Genentech, as amended in November 2019 and October 2020 (such agreement, as amended, the “Genentech Agreement”), to develop the Company’s α9/α10 nicotinic acetylcholine receptor (“nAChR”) antagonists for the treatment of chronic pain. On December 27, 2022, the Company through its subsidiary KCP, received written notice from Genentech of its termination of the Genentech Agreement.

The Company recognized license revenue over time of zero under the Genentech Agreement with Genentech for the three and nine months ended September 30, 2023. The Company recognized license revenue of zero for the three months ended September 30, 2022 and $965,000 for the nine months ended September 30, 2022. There was no deferred revenue related to this license as of September 30, 2023 as the Genentech Agreement was terminated in December 2022.

Merck

In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. This collaboration focused on the discovery and development of novel candidates for the treatment of ALS. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. As a result, the Company is eligible to receive up to an additional $255.0 million in development milestones, sales milestones and royalties on net sales. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. The Company recognized one-time licensing revenue of $5.0 million for the three months ended June 30, 2023 under the Merck Neuromuscular License Agreement. The Company received the $5.0 million milestone payment in July 2023.

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Stock-Based Compensation

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

12.Stock-Based Compensation

2008 Equity Incentive Plan

The Company’s 2008 Equity Incentive Plan (the “2008 Plan”) provided for the grant of incentive stock options, non-statutory stock options, restricted stock awards and restricted stock units to employees and non-employee service providers of the Company. Under the 2008 Plan, the exercise price of stock options granted were at 100% of the estimated fair market value of the Company’s common stock on the date of grant and the contractual term of stock options granted were between five and ten years. Options become vested and, if applicable, exercisable based on terms

determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement.

In 2018, the 2008 Plan expired and 225,041 stock options granted prior to the 2008 Plan expiration remain outstanding as of September 30, 2023.

2010 Equity Incentive Plan

The Company’s 2010 Equity Incentive Plan (the “2010 Plan”) provided for the grant of incentive stock option, non-statutory stock options, stock appreciation rights, restricted stock awards and restricted stock unit awards to employees and non-employee service providers of the Company. Under the 2010 Plan, the exercise price of stock options granted were at 100% of the estimated fair market value of the Company’s common stock on the date of grant and the contractual term of stock options granted did not exceed ten years. Options become vested and, if applicable, exercisable based on terms determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement. Stock appreciation rights (“SARs”) provide a participant with the right to receive the aggregate appreciation in stock price over the market price of the Company’s common stock at the date of grant, payable in cash. The rights granted have varying vesting terms, including SARs that vest immediately on the grant date and upon satisfaction of the service-based requirement, typically three to five years. The maximum fair value is limited to four times the exercise price.

In February 2020, the 2010 Plan expired and 199,103 stock options granted prior to the expiration remain outstanding as of September 30, 2023. As of September 30, 2023, there were no SARs outstanding.

2020 Equity Incentive Plan

The Company’s 2020 Equity Incentive Plan (the “2020 Plan”) authorizes the grant of equity awards for up to 206,000 shares of the Company’s voting common stock and 206,000 of the Company’s non-voting common stock.

The 2020 Plan provides for the grant of incentive stock options, non-statutory stock options and restricted stock to employees and non-employee service providers. Under the 2020 Plan, the contractual term of stock options shall not exceed ten years and the exercise price of stock options granted shall not be less than 100% of the estimated fair market value of the Company’s common stock on the date of grant. However, the exercise price of incentive stock options granted to a 10% stockholder shall not be less than 110% of the fair market value of the common stock on the date of grant and the contractual term shall not exceed ten years. Options become vested and, if applicable, exercisable based on terms determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement. Restricted stock has vesting terms that vest immediately on the grant date or upon satisfaction of the service-based requirement, typically four years or the performance-based requirement. The Company has a repurchase right exercisable upon termination of continuous service with respect to restricted stock for any shares that are issued and unvested.

In December 2022, the 2020 Plan expired and 201,919 stock options and 9,809 RSUs granted prior to the 2020 Plan expiration remain outstanding as of September 30, 2023.

2022 Equity Incentive Plan

In December 2022, the Company approved the 2022 Equity Incentive Plan (the “2022 Plan”). The 2022 Plan provides for the grant of incentive stock option, non-statutory stock options, restricted stock, restricted stock units, stock appreciation rights (“SARs”), performance units and performance shares to employees, directors and independent contractors of the Company. Under the 2022 Plan, the exercise price of stock options grants shall be at 100% fair market value of the Company’s common stock on the date of grant and the contractual term of stock options granted shall not exceed ten years. Options become vested and, if applicable, exercisable based on terms determined by the Company’s board of directors or other plan administrator on the date of grant, which is continued employment or service as defined in each option agreement. SARs provide a participant with the right to receive the aggregate appreciation in stock price over the market price of the Company’s common stock at the date of grant, payable in cash or in shares of equivalent value.

Stock Option Activity

The following table summarizes stock option activity under the Company’s equity incentive plans:

	Outstanding Stock Options			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
	(in thousands, except per share amounts and years)
December 31, 2022		734		$	22.67		5.4	$	—
Granted		1,383		$	3.19
Exercised		—		$	—
Forfeited		(98	)	$	25.82
Expired		(9	)	$	10.90
Outstanding as of September 30, 2023		2,010		$	9.16		8.0	$	286
Exercisable as of September 30, 2023		1,008		$	13.79		6.5	$	51

Fair Value of Stock Options

The fair value of stock options granted for employee and non-employee awards was estimated at the grant date using the Black-Scholes option pricing model based on the following assumptions:

	Nine Months Ended September 30,
	2023	2022
Expected volatility	111.1% - 113.1%	84.2% - 86.0%
Expected term (years)	5.35 - 6.08	3.0 - 7.0
Risk-free interest rate	3.4% - 4.4%	1.6% - 2.9%
Expected dividend yield	0% - 0%	0% - 0%

Restricted Stock

The Company has granted restricted stock units (“RSUs”) under its equity incentive plans with both service-based and performance-based vesting conditions. As of September 30, 2023, the Company’s outstanding RSUs are time-based and have a grant date fair value of $267,000.

The following table summarizes the Company’s restricted stock activity consisting of RSUs:

	Number of Restricted Stock (RSUs)			Weighted-Average Grant Date Fair Value Per Share
	(in thousands, excepts per share amounts)
Outstanding and unvested as of December 31, 2022		175		$	26.89
Exercised/Released		(157	)	$	26.89
Cancelled/Forfeited		(8	)	$	26.48
Outstanding and unvested as of September 30, 2023		10		$	27.22

Stock-Based Compensation

The following table summarizes total stock-based compensation included in the Company’s consolidated statements of operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands)
Research and development	$	91	$	292	$	516	$	895
General and administrative		383		185		2,882		622
Total stock-based compensation	$	474	$	477	$	3,398	$	1,517

As of September 30, 2023, there was $3.4 million of unrecognized stock-based compensation related to stock options and RSUs outstanding, which is expected to be recognized over a weighted-average remaining service period of 2.0 years.

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Net Loss Per Share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Net Loss Per Share

13.Net Loss Per Share

The following table summarizes the computation of basic and diluted net loss per share:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
	(in thousands, excepts per share amounts)
Numerator:
Net loss attributable to Kineta, Inc.	$	(5,380	)	$	(5,585	)	$	(11,445	)	$	(16,439	)
Denominator:
Weighted-average common shares outstanding, basic and diluted(1)		11,738			4,891			10,505			4,808
Net loss per share, basic and diluted	$	(0.46	)	$	(1.14	)	$	(1.09	)	$	(3.42	)

(1) Included in the denominator were 577,000 and 530,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2023, respectively, with an exercise price of $0.14. Included in the denominator were 155,000 and 153,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2022, respectively, with an exercise price of $0.14.

The following outstanding potentially dilutive common stock equivalents were excluded from the computation of diluted net loss per share as of the periods presented because including them would have been antidilutive:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands)
Common stock options		2,010		721		2,010		721
Unvested restricted stock subject to repurchase		10		170		10		170
Warrants to purchase common stock		1,630		154		1,630		154
Vested restricted stock subject to recall		56		56		56		56
Convertible notes, if converted		—		660		—		660
Total		3,706		1,761		3,706		1,761

Defined Contribution Plan

The Company sponsors a 401(k) Plan whereby all employees are eligible to participate in the 401(k) Plan after meeting certain eligibility requirements. Participants may elect to have a portion of their salary deferred and contributed to the 401(k) plan, subject to certain limitations. The Company provided matching contributions of $24,000 for the three months ended September 30, 2023 and $93,000 for the nine months ended September 30, 2023. The Company provided matching contributions of $30,000 for the three months ended September 30, 2022 and $97,000 for the nine months ended September 30, 2022.

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Related Party Transactions

9 Months Ended

Sep. 30, 2023

Related Party Transactions [Abstract]

Related Party Transactions

14.Related Party Transactions

Stock Purchases

During the three months ended September 30, 2023, five members of the Company’s executive management purchased 30,000 shares of the Company’s common stock on the open market and one director of the Company purchased 5,000 shares of the Company’s common stock on the open market.

During the nine months ended September 30, 2023, five members of the Company’s executive management purchased 35,000 shares of the Company’s common stock on the open market and one director of the Company purchased 5,000 shares of the Company’s common stock on the open market.

RSU Vesting

During the nine months ended September 30, 2023, the Company issued 100,000 shares of its common stock to members of the Company’s executive management and 10,000 shares to directors of the Company, upon vesting of restricted stock units.

Warrant Exercises

During the nine months ended September 30, 2023, the Company issued 3,000 shares of its common stock to members of the Company’s executive management and 60,000 shares to a director of the Company, upon exercise of outstanding warrants.

2020 Convertible Notes

As of September 30, 2022, the Company had a principal balance of $9.8 million outstanding for its 2020 convertible notes. Two members of the Company’s board of directors held two of 2020 convertible notes totaling $1.8 million.

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Subsequent Events

9 Months Ended

Sep. 30, 2023

Subsequent Events

15.Subsequent Events

The Company evaluated subsequent events through the date these consolidated financial statements were issued.

Equity Raise - Registered Direct Offering

On October 3, 2023, the Company, entered into a Securities Purchase Agreement (the “October 2023 Purchase Agreement”) with an institutional investor (the “October 2023 Investor”) pursuant to which the Company issued and sold, in a registered direct offering priced at-the-market under the rules of Nasdaq (such offering, the “October 2023 Registered Offering”), (i) an aggregate of 110,000 shares of its common stock at a purchase price of $3.37 per share, and (ii) pre-funded warrants exercisable for up to 780,208 shares of its common stock (the “October 2023 Pre-Funded Warrants”) to the October 2023 Investor at a purchase price of $3.369 per October 2023 Pre-Funded Warrant, for aggregate gross proceeds from the October

2023 Registered Offering of approximately $3.0 million before deducting the placement agent fee (as described in greater detail below) and related offering expenses.

Each October 2023 Pre-Funded Warrant represents the right to purchase one share of common stock at an exercise price of $0.001 per share. The October 2023 Pre-Funded Warrants are exercisable immediately and may be exercised at any time until the October 2023 Pre-Funded Warrants are exercised in full.

In a concurrent private placement (the “October 2023 Private Placement” and, together with the October 2023 Registered Offering, the “October 2023 Offering”), the Company issued to the October 2023 Investor warrants to purchase up to 890,208 shares of common stock (the “October 2023 Common Warrants”) at an exercise price of $3.25 per share. The October 2023 Common Warrants are exercisable immediately and will expire five and one-half years from the initial exercise date.

In connection with the October 2023 Offering, the Company entered into an engagement letter with H.C. Wainwright & Co., LLC (“Wainwright”), pursuant to which Wainwright agreed to serve as the exclusive placement agent for the issuance and sale of securities of the Company pursuant to the October 2023 Purchase Agreement. As compensation for such placement agent services, the Company paid Wainwright an aggregate cash fee equal to $210,000, a non-accountable expense of $35,000 and $50,000 for legal and other expenses as actually incurred. The total offering-related fees were approximately $310,000, which resulted in net proceeds to the Company of $2.7 million. On October 5, 2023, the Company also issued to Wainwright or its designees warrants to purchase 44,510 shares of common stock (the “October 2023 Wainwright Warrants”). The October 2023 Wainwright Warrants have a term of five years from the commencement of sales in the October 2023 Offering, and have an exercise price of $4.2125 per share.

Amendment No. 6 to the Securities Purchase Agreement

In connection and concurrently with the execution of the Merger Agreement, the Company entered into the Securities Purchase Agreement to sell shares of the Company’s common stock to certain institutional investors in the Private Placement. The Company and the investors entered into an amendment to the Securities Purchase Agreement on October 13, 2023 to, among other things, extend the date of the second closing. The second closing of the Private Placement for an aggregate purchase price of $22.5 million is expected to occur on April 15, 2024.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Basis of Presentation and Consolidation

Basis of Presentation and Consolidation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. GAAP and applicable SEC rules. The condensed consolidated financial statements include all accounts of the Company, its majority owned subsidiary KCP, and its wholly owned subsidiary, KVHF. All intercompany transactions and balances have been eliminated upon consolidation.

Noncontrolling interest in the accompanying condensed consolidated financial statements represents the proportionate share of equity which is not held by the Company. Net income (loss) of the non-wholly owned consolidated subsidiary is allocated to the Company and the holder(s) of the noncontrolling interests in proportion to their percentage ownership considering any preferences specific to the form of equity of the subsidiaries.

Revenue Recognition

Revenue Recognition

Collaboration Revenues

In connection with the Merger, the Company became the successor in interest to an exclusive license and research collaboration agreement (the “Merck Neuromuscular License Agreement”) with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis. The Company recognizes revenue using the cost-to-cost method, which it believes best depicts the transfer of control to the customer. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of actual costs incurred to the total estimated costs expected upon satisfying the identified performance obligation. Under this method, revenue is recognized as a percentage of actual cost incurred to the estimated costs to complete. The Company recognized collaboration revenues of zero for the three months ended September 30, 2023 and $442,000 for the nine months ended September 30, 2023. As of June 30, 2023, the Company completed its project services under the Merck Neuromuscular License Agreement.

License Revenues

In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. Revenue from such milestones is recognized when the accomplishment of the milestone is deemed probable. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. As a result, the Company is eligible to receive up to an additional $255.0 million in development milestones, sales milestones and royalties on net sales. The Company recognized licensing revenues of zero for the three months ended September 30, 2023 and $5.0 million for the nine months ended September 30, 2023 under the Merck Neuromuscular License Agreement and has no further obligations under the Merck Neuromuscular License Agreement.

Net loss per share

Basic net loss per common share is computed by dividing the net loss by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per common share is computed by dividing net loss by the weighted average number of common shares outstanding for the period, including potential dilutive common shares assuming the dilutive effect of outstanding common share equivalents. Diluted net loss per share is the same as basic net loss per share, since the effects of potentially dilutive securities are antidilutive given the net loss for each period presented. In computing basic net loss per share, nominal issuances of common stock, including warrants to purchase the Company’s common stock with an exercise price of $0.14 per share, are reflected in basic net loss per share for all periods, even if antidilutive.

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Changes In The Fair Value Of The Rights From Private Placement

The following table provides a summary of the changes in the fair value of the rights from Private Placement measured using Level 3 inputs:

	Nine Months Ended September 30,
	2023			2022
	(in thousands)
Balance at beginning of period	$	2,250		$	—
Change in fair value of rights from Private Placement		(180	)		—
Balance at end of period	$	2,070		$	—

Summary of Changes in Fair Value of 2022 & 2020 Notes Payable Measured Using Level 3 Inputs

The following table provides a summary of the changes in the fair value of the Company’s 2022 & 2020 notes payable measured using Level 3 inputs:

	Nine Months Ended September 30,
	2023		2022
	(in thousands)
Balance at beginning of period	$	219	$	17,830
Issuance of 2022 convertible notes		—		5,620
Change in fair value of 2022 & 2020 notes payable		17		542
Partial settlement of 2020 notes payable		—		(5,973	)
Balance at end of period	$	236	$	18,019

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Balance Sheet Components (Tables)

6 Months Ended

9 Months Ended

Jun. 30, 2023

Sep. 30, 2023

Statement of Financial Position [Abstract]

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following:

	September 30, 2023		December 31, 2022
	(in thousands)
Laboratory equipment	$	—	$	779
Computer and software		67		73
Leasehold improvements		14		14
Total property and equipment		81		866
Less: Accumulated depreciation and amortization		78		617
Total property and equipment, net	$	3	$	249

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following as of the periods presented:

	September 30, 2023		December 31, 2022
	(in thousands)
Compensation and benefits	$	980	$	745
Accrued clinical trial and preclinical costs		304		404
Accrued interest		158		132
Professional services		64		2,176
Other		351		70
Total accrued expenses and other current liabilities	$	1,857	$	3,527

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Notes Payable (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Schedule of Notes Payable

Notes payable outstanding consisted of the following as of the periods presented:

	September 30, 2023				December 31, 2022
	Principal		Fair Value		Principal		Fair Value
	(in thousands)
Notes payable:
2020 notes	$	250	$	236	$	250	$	219
Other notes payable		379		379		379		379
Small Business Administration loan		150		150		150		150
Total notes payable	$	779		765	$	779		748
Less: current portion				615				—
Notes payable, net of current portion			$	150			$	748

Schedule of Expected Future Minimum Principal

Expected future minimum principal payments under the Company’s notes payables as of September 30, 2023 were as follows:

	Total
	(in thousands)
Years
Remainder of 2023	$	—
2024		629
2025		0
2026		0
2027		2
Thereafter		148
Total notes payable	$	779
Less: current portion		615
Notes payable, net of current portion	$	164

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Operating Lease Future Undiscounted Payments

Future undiscounted payments due under the operating lease as of September 30, 2023 were as follows:

Years	(in thousands)
Remainder of 2023	$	235
2024		561
Total undiscounted lease payments		796
Less: Imputed interest		(29	)
Operating lease liability		767
Less: Operating lease liability, current portion		(767	)
Operating lease liability, net of current portion	$	—

Schedule of Operating Leases Supplemental Information

Supplemental information on the Company’s operating leases was as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Cash paid for operating lease agreement (in thousands)	$	235		$	228		$	701		$	681
Remaining lease term (in years)		0.8			1.8			0.8			1.8
Incremental borrowing rate		10	%		10	%		10	%		10	%

Schedule of Finance Lease Future Undiscounted Payments

Future undiscounted payments due under finance lease liabilities as of September 30, 2023 were as follows:

Years	(in thousands)
Remainder of 2023	$	12
2024		50
2025		32
2026		10
Total undiscounted lease payments		104
Less: Imputed interest		(10	)
Financing lease liabilities		94
Less: Financing lease liabilities, current portion		(43	)
Financing lease liabilities, net of current portion	$	51

Schedule of Finance Leases Supplemental Information

Supplemental information on the Company’s financing leases was as follows (cash paid for finance lease agreements was not material):

	September 30, 2023			December 31, 2022
Weighted average remaining lease term (in years)		2.3			3.2
Incremental borrowing rate		9.3	%		9.3	%

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Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Schedule of Warrants to Purchase

As of September 30, 2023, the Company had issued and outstanding warrants to purchase shares of the Company’s common stock as follows, which all met the condition for equity classification (in thousands):

Year Issued	Expiration Date	Number Outstanding as of December 31, 2022		Issued		Exercised			Cancelled/Expired			Number Outstanding as of September 30, 2023		Range of Exercise Price
2013			12		—		—			(12	)		—
2017	November 2023 - June 2025		131		—		—			—			131	$0.14 - $21.80
2019	March 2025 - April 2027		44		—		—			—			44	$0.14 - $21.80
2020	October 2023		45		—		(1	)		(4	)		40	$	0.14
2022	August 2025 - December 2029		301		—		(149	)		—			152	$0.14 - $168.35
2023	April 2028 - October 2028		—		1,973		(477	)		—			1,496	$4.08 - $5.26
Total number of shares    underlying warrants			533		1,973		(627	)		(16	)		1,863

Year Issued	Expiration Date	Number Outstanding as of December 31, 2021		Issued		Exercised			Cancelled/Expired			Number Outstanding as of September 30, 2022		Range of Exercise Price
2013	April 2023		12		—		—			—			12	$	10.17
2017	December 2022 - June 2025		203		—		(20	)		(35	)		148	$0.14 - $23.25
2019	October 2022 - April 2027		50		—		(5	)		(1	)		44	$0.14 - $21.80
2020	February 2023 - October 2023		73		—		(23	)		—			50	$0.14 - $26.88
2022	August 2025 - September 2025		—		4		—			—			4	$	0.14
Total number of shares    underlying warrants			338		4		(48	)		(36	)		258

Schedule of Common Stock for Future Issuance

Common stock reserved for future issuance consisted of the following as the period presented:

	September 30, 2023
	(in thousands)
Shares reserved for stock options and restricted stock units to purchase    common stock under equity incentive plans		2,020
Shares reserved for future issuance of equity awards		932
Shares reserved for exercise of warrants		1,863
Total		4,815

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Collaboration Agreement (Tables)

9 Months Ended

Sep. 30, 2023

Revenue Recognition and Deferred Revenue [Abstract]

Summary of collaboration revenue agreement and deferred revenue

The following table shows the activity for the Company’s collaboration revenue agreement and deferred revenue (in thousands):

	September 30,
	2023			2022
	(in thousands)
Balance as of beginning of period	$	442		$	—
Decrease for provision of research services		(442	)		—
Balance as of end of period	$	—		$	—

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Licensing Revenue Agreement - (Tables)

9 Months Ended

Sep. 30, 2023

Revenue Recognition and Deferred Revenue [Abstract]

Summary of Licensing Revenue Agreements And Deferred Revenue

The following table shows the activity for the Company’s licensing revenue agreements and deferred revenue (in thousands):

	September 30,
	2023		2022
	(in thousands)
Balance as of beginning of period	$	—	$	1,041
Decrease for provision of research services		—		(965	)
Balance as of end of period	$	—	$	76

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity under the Company’s equity incentive plans:

	Outstanding Stock Options			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
	(in thousands, except per share amounts and years)
December 31, 2022		734		$	22.67		5.4	$	—
Granted		1,383		$	3.19
Exercised		—		$	—
Forfeited		(98	)	$	25.82
Expired		(9	)	$	10.90
Outstanding as of September 30, 2023		2,010		$	9.16		8.0	$	286
Exercisable as of September 30, 2023		1,008		$	13.79		6.5	$	51

Summary of Fair Value of Stock Options Granted for Employee and Non-Employee Awards

The fair value of stock options granted for employee and non-employee awards was estimated at the grant date using the Black-Scholes option pricing model based on the following assumptions:

	Nine Months Ended September 30,
	2023	2022
Expected volatility	111.1% - 113.1%	84.2% - 86.0%
Expected term (years)	5.35 - 6.08	3.0 - 7.0
Risk-free interest rate	3.4% - 4.4%	1.6% - 2.9%
Expected dividend yield	0% - 0%	0% - 0%

Summary of Companies Restricted Stock Activity

The following table summarizes the Company’s restricted stock activity consisting of RSUs:

	Number of Restricted Stock (RSUs)			Weighted-Average Grant Date Fair Value Per Share
	(in thousands, excepts per share amounts)
Outstanding and unvested as of December 31, 2022		175		$	26.89
Exercised/Released		(157	)	$	26.89
Cancelled/Forfeited		(8	)	$	26.48
Outstanding and unvested as of September 30, 2023		10		$	27.22

Summary of Total Stock-Based Compensation

The following table summarizes total stock-based compensation included in the Company’s consolidated statements of operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands)
Research and development	$	91	$	292	$	516	$	895
General and administrative		383		185		2,882		622
Total stock-based compensation	$	474	$	477	$	3,398	$	1,517

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Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Loss per Share

The following table summarizes the computation of basic and diluted net loss per share:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
	(in thousands, excepts per share amounts)
Numerator:
Net loss attributable to Kineta, Inc.	$	(5,380	)	$	(5,585	)	$	(11,445	)	$	(16,439	)
Denominator:
Weighted-average common shares outstanding, basic and diluted(1)		11,738			4,891			10,505			4,808
Net loss per share, basic and diluted	$	(0.46	)	$	(1.14	)	$	(1.09	)	$	(3.42	)

(1) Included in the denominator were 577,000 and 530,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2023, respectively, with an exercise price of $0.14. Included in the denominator were 155,000 and 153,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2022, respectively, with an exercise price of $0.14.

Schedule of Antidilutive Securities Excluded from Computation of Diluted Weighted-average Shares Outstanding

The following outstanding potentially dilutive common stock equivalents were excluded from the computation of diluted net loss per share as of the periods presented because including them would have been antidilutive:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands)
Common stock options		2,010		721		2,010		721
Unvested restricted stock subject to repurchase		10		170		10		170
Warrants to purchase common stock		1,630		154		1,630		154
Vested restricted stock subject to recall		56		56		56		56
Convertible notes, if converted		—		660		—		660
Total		3,706		1,761		3,706		1,761

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Organization and Liquidity - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended						9 Months Ended
	Apr. 15, 2024	Dec. 16, 2022	Apr. 30, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Organization And Liquidity [Line Items]
Issuance of common stock, Shares							59,000				114,000
Proceeds from issuance of common stock										$ 752,000	$ 1,556,000
Accumulated deficit				$ 163,135,000						163,135,000		$ 151,690,000
Net loss				(5,311,000)	$ 375,000	$ (6,480,000)	$ (5,667,000)	$ (5,878,000)	$ (4,975,000)	(11,416,000)	(16,520,000)
Cash				7,562,000			$ 2,810,000			7,562,000	$ 2,810,000	$ 13,143,000
Proceeds From Sale Of Other Assets 1				$ 28,000						331,000
Private Placement [Member]
Organization And Liquidity [Line Items]
Proceeds from issuance of common stock		$ 7,400,000								2,700,000
Net proceeds from Private Placement			$ 22,500,000
Private Placement [Member] | Subsequent Event
Organization And Liquidity [Line Items]
Rights from Private Placement	$ 22,500,000
Merger Agreement
Organization And Liquidity [Line Items]
Issuance of common stock, Shares		649,346
Proceeds from issuance of common stock		$ 7,400,000
Rights from Private Placement										$ 22,500,000

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended
	Jul. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Summary Of Significant Accounting Policies [Line Items]
License revenue recognized		$ 0			$ 442,000
Accounting Standards Update 2021-04
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle accounting standards update, adopted						true
Change in accounting principle accounting standards update, immaterial effect						true
Merck Neuromuscular License Agreement
Summary Of Significant Accounting Policies [Line Items]
License revenue recognized		$ 0	$ 5,000,000		$ 5,000,000
Milestone payments	$ 5,000,000			$ 5,000,000
Milestones and royalties on net sales				$ 255,000,000
Maximum
Summary Of Significant Accounting Policies [Line Items]
Warrants exercise price		$ 0.14			$ 0.14

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Reverse Merger (Additional Information) (Details) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Common Stock, Shares Authorized	125,000,000	125,000,000
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares, Outstanding	10,215,000	8,318,000

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Fair Value Measurements - Additional Information (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($) Rate	Sep. 30, 2023 USD ($) Rate	Sep. 30, 2022 USD ($) Rate	Jul. 25, 2023 $ / shares	Dec. 31, 2022 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Notes payable | $	$ 765,000	$ 765,000			$ 748,000
Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected volatility		111.10%	84.20%
Risk-free interest rate		3.40%	1.60%
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected volatility		113.10%	86.00%
Risk-free interest rate		4.40%	2.90%
2022 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			2 months 12 days
Convertible debt | $			$ 4,800,000
2022 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			7 months 6 days
Convertible debt | $			$ 5,300,000
2020 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			2 months 12 days
Convertible debt | $			$ 11,300,000
2020 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			9 months
Convertible debt | $			$ 16,200,000
2020 Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			1 month 6 days
Convertible debt | $			$ 1,600
2020 Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term	9 months 18 days	9 months 18 days	2 years 4 months 24 days
Convertible debt | $	$ 236,000,000	$ 236,000,000	$ 2,900
Private Placement
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Minimum purchase price | $ / shares				$ 3.18
Expected volatility		86.00%
Risk-free interest rate		5.40%
Funding probability		75.00%
Change in fair value of rights from Private Placement | $	1,400,000	$ 200,000
Fair value measurement | $	$ 2,100,000	$ 2,100,000
Discount Rate | 2022 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.336
Discount Rate | 2022 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.412
Discount Rate | 2020 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.113
Discount Rate | 2020 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.412
Discount Rate | 2020 Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.113
Discount Rate | 2020 Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input	0.14	0.14	0.117
Maturity Dates | 2022 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			4 months 24 days
Maturity Dates | 2022 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			1 year
Maturity Dates | 2020 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			3 months
Maturity Dates | 2020 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, term			1 year 3 months
Financing Range | 2022 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.80
Financing Range | 2022 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.90
Financing Range | 2020 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.80
Financing Range | 2020 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.90
Repayment Range | 2022 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.10
Repayment Range | 2022 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.20
Repayment Range | 2020 Convertible Notes | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.10
Repayment Range | 2020 Convertible Notes | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Long-term debt, measurement input			0.20

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Fair Value Measurements - Schedule Of Changes In The Fair Value Of The Rights (Details) - Private Placement - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022
Servicing Assets at Fair Value [Line Items]
Change in fair value of rights from Private Placement	$ 1,400	$ 200
Level 3
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period		2,250	$ 0
Change in fair value of rights from Private Placement		(180)	0
Balance at end of period	$ 2,070	$ 2,070	$ 0

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Fair Value Measurements - Summary of Changes in Fair Value of 2022 & 2020 Notes Payable Measured Using Level 3 Inputs (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 219	$ 17,830
Issuance of 2022 convertible notes	0	5,620
Change in fair value of 2022 & 2020 notes payable	17	542
Partial settelement of 2020 notes payable	0	(5,973)
Balance at end of period	$ 236	$ 18,019

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Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Balance Sheet Components [Line Items]
Total property and equipment	$ 81	$ 866
Less: Accumulated depreciation and amortization	78	617
Total property and equipment, net	3	249
Laboratory Equipment
Balance Sheet Components [Line Items]
Total property and equipment	0	779
Computer and Software
Balance Sheet Components [Line Items]
Total property and equipment	67	73
Leasehold Improvements
Balance Sheet Components [Line Items]
Total property and equipment	$ 14	$ 14

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Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Balance Sheet Components [Abstract]
Compensation and benefits		$ 980	$ 745
Professional services		64	2,176
Accrued interest		158	132
Accrued clinical trial and preclinical costs		304	404
Other		351	70
Total accured expense and other current liabilities	$ 1,857	$ 1,857	$ 3,527

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Balance Sheet Components (Additional Information) (Details) - USD ($)				3 Months Ended		9 Months Ended
	Apr. 15, 2024	May 31, 2023	Dec. 16, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Balance Sheet Components [Line Items]
Property and equipment, net				$ 3,000		$ 3,000		$ 249,000
Proceeds from disposal of assets				29,000		241,000
Proceeds From Sale Of Other Assets 1				28,000		331,000
Depreciation and amortization expense				$ 1,000	$ 15,000	$ 5,000	$ 39,000
Common stock, shares issued				10,215,000		10,215,000		8,318,000
Proceeds from Issuance of Common Stock						$ 752,000	$ 1,556,000
Private Placement
Balance Sheet Components [Line Items]
aggregate purchase price		$ 22,500,000
Future Right Recorded as Other Asset	$ 2,300,000					$ 2,100,000
Sell and purchase of its common stock, description						With respect to the second closing, the Company is obligated to sell and issue a number of shares of its common stock and the investors are obligated to buy such shares by the specified date and price equal to the volume-weighted average price of Company common stock for the five trading days prior to April 15, 2024 (“VWAP”) plus 10% of the VWAP; provided, however, that the share purchase price shall be at least equal to the closing price of the Company’s common stock on March 29, 2023.
Common stock, shares issued			649,346
Proceeds from Issuance of Common Stock			$ 7,400,000			$ 2,700,000
Equipment [Member]
Balance Sheet Components [Line Items]
Property and equipment, net								$ 125,000

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Notes Payable - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total notes payable	$ 779	$ 779
Fair Value	765	748
Less: current portion	615	0
Notes payable, net of current portion	150	748
2020 Notes Payable
Debt Instrument [Line Items]
Total notes payable	250	250
Fair Value	236	219
Other Notes Payable
Debt Instrument [Line Items]
Total notes payable	379	379
Fair Value	379	379
Small Business Administration Loan
Debt Instrument [Line Items]
Total notes payable	150	150
Fair Value	$ 150	$ 150

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Notes Payable - Schedule of Expected Future Minimum Principal (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instruments [Abstract]
Remainder of 2023	$ 0
2024	629
2025	0
2026	0
2027	2
Thereafter	148
Total notes payable	779
Less: current portion	615	$ 0
Notes payable, net of current portion	$ 164

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Notes Payable - Additional Information (Details) - USD ($)		1 Months Ended			3 Months Ended			9 Months Ended
	Aug. 31, 2022	Jun. 30, 2022	Oct. 31, 2020	Aug. 31, 2020	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Aug. 10, 2020
Debt Instrument [Line Items]
(Loss) gain on extinguishments of debt, net					$ 0		$ (236,000)	$ 0	$ 259,000
Commercial revenues					$ 0		$ 200,000	$ 5,442,000	$ 1,466,000
Debt instrument, maturity date				Aug. 31, 2050
2020 Notes
Debt Instrument [Line Items]
Convertible debt			$ 25,000,000
Debt instrument, interest rate, effective percentage			16.00%							50.00%
Refinanced notes payable			$ 3,000,000
Debt instrument revised interest rate			6.00%			50.00%
Debt instrument, interest rate, increase (decrease)			16.00%
2020 Notes
Debt Instrument [Line Items]
Debt Instrument Outstanding Principal And Accrued Interest	$ 1,400,000
Non-voting common stock percentage	15.00%
Long-term debt, gross	$ 250,000
Debt instrument,outstanding principal and accrued interest	$ 1,400,000
Non-voting common, shares, issued	59,000
Debt instrument, interest rate, increase (decrease)	6.00%
Other Notes Payable
Debt Instrument [Line Items]
Long-term debt, gross		$ 379,000
Fixed interest rate					12.00%			12.00%
Debt instrument, interest rate, increase (decrease)		6.00%	13.00%
Small Business Administration Loan
Debt Instrument [Line Items]
Fixed interest rate				3.75%
Loan proceeds				$ 150,000

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Commitments and Contingencies (Additional Information) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 20, 2022 USD ($)	Jun. 30, 2020 ft²	May 31, 2020 ft²	Jan. 31, 2019 ft²	Dec. 31, 2017 ft²
Lease Agreement [Member]
Long-Term Purchase Commitment [Line Items]
Lessee, Operating Lease, Option to Extend			contains two five-year options to extend the lease term.
Area of land | ft²						14,870	22,064
Lease Expiration Date			Jul. 31, 2024
Payments for rent	$ 208,000	$ 208,000	$ 658,000	$ 624,000
Variable lease, cost	137,000	124,000	$ 447,000	386,000
Accrued Compensation					$ 1,300,000
Sublease Agreement [Member]
Long-Term Purchase Commitment [Line Items]
Area of land | ft²								7,194	1,850
Lease term extend, description			In October 2020 the sublease expiration date was extended from December 2020 to December 2022.
Sublease income	$ 49,000,000	$ 47,000	$ 146,000,000	$ 141,000
Proceeds from rent			$ 30,000,000

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Commitments and Contingencies - Schedule of Operating Lease Future Undiscounted Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Operating Lease [Abstract]
Remainder of 2023	$ 235
2024	561
Total undiscounted lease payments	796
Less: Imputed interest	(29)
Operating lease liability	767
Less: Operating lease liability, current portion	(767)	$ (843)
Operating lease liability, net of current portion	$ 0	$ 547

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Commitments and Contingencies - Schedule of Operating Leases Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating Lease:
Cash paid for operating lease agreement (in thousands)	$ 235	$ 228	$ 701	$ 681
Remaining lease term (in years)	9 months 18 days	1 year 9 months 18 days	9 months 18 days	1 year 9 months 18 days
Incremental borrowing rate	10.00%	10.00%	10.00%	10.00%

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Commitments and Contingencies - Schedule of Finance Lease Future Undiscounted Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Finance Lease [Abstract]
Remainder of 2023	$ 12
2024	50
2025	32
2026	10
Total undiscounted lease payments	104
Less: Imputed interest	(10)
Financing lease liabilities	94
Less: Financing lease liabilities, current portion	(43)	$ (40)
Finance lease liabilities, net of current portion	$ 51	$ 83

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Commitments and Contingencies - Schedule of Finance Leases Supplemental Information (Details)	Sep. 30, 2023	Dec. 31, 2022
Finance Leases:
Weighted average remaining lease term (in years)	2 years 3 months 18 days	3 years 2 months 12 days
Incremental borrowing rate	9.30%	9.30%

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Strategic License Agreements - Additional Information (Details) - USD ($)			9 Months Ended	50 Months Ended
	Jun. 09, 2021	Aug. 10, 2020	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
License Agreements Disclosure [Line Items]
Aggregate fair market value			$ 10,000	$ 10,000	$ 8,000
Number of shares issued			10,215,000	10,215,000	8,318,000
Milestones achieved			$ 0
Royalties due			$ 0
Option and License Agreement | Gigagen, Inc
License Agreements Disclosure [Line Items]
Payments for option and license agreement		$ 200,000
Upfront option exercise fee	$ 100,000	400,000
Development and regulatory milestones, aggregate amount payable	21,000,000	21,000,000
Sales milestone, aggregate amount payable	11,000,000	11,000,000
Milestone expenses				$ 500,000
Royalties due				$ 0
Option and License Agreement | Gigagen, Inc | Non-voting Common Stock
License Agreements Disclosure [Line Items]
Aggregate fair market value	$ 250,000	$ 250,000

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Shareholders' Equity - Schedule of Warrants to Purchase (Details) - $ / shares shares in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Class Of Warrant Or Right [Line Items]
Number Outstanding	533	338
Issued	1,973	4
Exercised	(627)	(48)
Cancelled/Expired	(16)	(36)
Number Outstanding	1,863	258
Maximum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 0.14
2013
Class Of Warrant Or Right [Line Items]
Expiration Date		2023-04
Number Outstanding	12	12
Cancelled/Expired	(12)
Number Outstanding		12
Range of Exercise Price		$ 10.17
2017
Class Of Warrant Or Right [Line Items]
Expiration Date	2023-11	2022-12
Expiration Date	2025-06	2025-06
Number Outstanding	131	203
Exercised		(20)
Cancelled/Expired		(35)
Number Outstanding	131	148
2017 | Minimum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 0.14	$ 0.14
2017 | Maximum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 21.8	$ 23.25
2019
Class Of Warrant Or Right [Line Items]
Expiration Date	2025-03	2022-10
Expiration Date	2027-04	2027-04
Number Outstanding	44	50
Exercised		(5)
Cancelled/Expired		(1)
Number Outstanding	44	44
2019 | Minimum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 0.14	$ 0.14
2019 | Maximum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 21.8	$ 21.8
2020
Class Of Warrant Or Right [Line Items]
Expiration Date	2023-10	2023-02
Expiration Date		2023-10
Number Outstanding	45	73
Exercised	(1)	(23)
Cancelled/Expired	(4)
Number Outstanding	40	50
Range of Exercise Price	$ 0.14
2020 | Minimum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price		$ 0.14
2020 | Maximum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price		$ 26.88
2022
Class Of Warrant Or Right [Line Items]
Expiration Date	2025-08	2025-08
Expiration Date	2029-12	2025-09
Number Outstanding	301
Issued		4
Exercised	(149)
Number Outstanding	152	4
Range of Exercise Price		$ 0.14
2022 | Minimum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 0.14
2022 | Maximum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 168.35
2023
Class Of Warrant Or Right [Line Items]
Expiration Date	2028-04
Expiration Date	2028-10
Issued	1,973
Exercised	(477)
Number Outstanding	1,496
2023 | Minimum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 4.08
2023 | Maximum
Class Of Warrant Or Right [Line Items]
Range of Exercise Price	$ 5.26

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Shareholders' Equity - Additional Information (Details) - USD ($)					3 Months Ended			9 Months Ended		12 Months Ended
	Apr. 15, 2024	Oct. 03, 2023	Apr. 20, 2023	Dec. 16, 2022	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Proceeds from exercise of warrants								$ 20,000	$ 70,000
Proceeds from issuance of common stock								$ 752,000	1,556,000
Common stock, shares issued					10,215,000			10,215,000		8,318,000
Common stock issued for services					$ 114,000	$ 41,000
outstanding principal and accrued interest under the other notes payable							$ 1,600,000		$ 2,900,000
Shares issued, shares							59,000		114,000
Net proceeds								$ 5,479,000	$ 0
Common stock, shares authorized					125,000,000			125,000,000		125,000,000
Common stock, par value					$ 0.001			$ 0.001		$ 0.001
fair value					$ 2,100,000			$ 2,100,000
Common stock, shares outstanding					10,215,000			10,215,000		8,318,000
Securities Purchase Agreement
Warrants exercise price		$ 0.001	$ 0.001
Shares issued, shares		110,000	948,000
Share price		$ 3.37	$ 4.21
Merger [Member]
Common stock, shares issued					10,214,945			10,214,945
Common stock, shares outstanding					10,214,945			10,214,945
Investors | Securities Purchase Agreement
Share price		$ 3.369	$ 4.209
Gross proceeds from offerings		$ 3,000,000	$ 6,000,000
Private Placement
Common stock purchase price	$ 22,500,000
Future Right Recorded as Other Asset	$ 2,300,000							$ 2,100,000
Proceeds from issuance of common stock				$ 7,400,000				$ 2,700,000
Common stock, shares issued				649,346
Total offering-related fees		310,000	520,000
Net proceeds		$ 2,700,000	$ 5,500,000
Private Placement | Securities Purchase Agreement
Share price		$ 3.25	$ 4.08
Warrants to purchase shares of common stock		890,208	1,425,179
Private Placement | Investors
Proceeds from issuance of common stock				$ 7,400,000
Common stock, shares issued				649,346
Restricted Stock Units (RSUs) [Member]
Common stock upon conversion of restricated stock units								132,000
Individual Investors Member
Proceeds from issuance of common stock							$ 553,000	$ 800,000
Share sold							20,000	126,503	56,000
Net proceeds									$ 1,600,000
Wainwright & Co., LLC [Member]
Warrants exercise price		$ 4.2125	$ 5.2625
Warrant term		5 years	5 years
Wainwright & Co., LLC [Member] | Private Placement | Securities Purchase Agreement
Warrants to purchase shares of common stock		44,510	71,259
Payments to related party		$ 210,000	$ 420,000
Non-accountable expense		35,000	35,000
Legal fees		$ 50,000	$ 50,000
professional services[Member]
Number Of shares issued for service								63,000
Common stock issued for services					$ 114,000			$ 155,000
Share sold					51,000
Non-voting Common Stock | Private Placement
Common stock warrants issued										104,000
Warrants exercise price										$ 0.14
Executive Officer [Member]
Common stock upon conversion of restricated stock units								100,000
Director [Member]
Common stock upon conversion of restricated stock units								10,000
Other Employees [Member]
Common stock upon conversion of restricated stock units								22,000
Warrant [Member]
Common stock upon exercise of warrants							3,000		48,000
Proceeds from exercise of warrants					$ 3,000		$ 63,000	$ 20,000	$ 70,000
Shares issued, shares					432,000			627,000
Warrant [Member] | Securities Purchase Agreement
Common stock upon exercise of warrants					432,000			627,000
Proceeds from exercise of warrants					$ 3,000			$ 20,000
Warrant [Member] | Common Stock [Member]
Common stock upon exercise of warrants									48,000
Proceeds from exercise of warrants							$ 63,000		$ 70,000
Shares issued, shares							3,000
Minimum [Member] | Warrant [Member]
Warrants exercise price							$ 0.14		$ 0.14
Share price					$ 0.001			$ 0.001
Minimum [Member] | Warrant [Member] | Securities Purchase Agreement
Warrants exercise price					0.001			0.001
Minimum [Member] | Warrant [Member] | Common Stock [Member]
Warrants exercise price							0.14		0.14
Maximum [Member]
Warrants exercise price					0.14			0.14
Maximum [Member] | Securities Purchase Agreement
Warrants exercisable		780,208	477,179
Maximum [Member] | Warrant [Member]
Warrants exercise price							26.88		26.88
Share price					0.14			0.14
Maximum [Member] | Warrant [Member] | Securities Purchase Agreement
Warrants exercise price					$ 0.14			$ 0.14
Maximum [Member] | Warrant [Member] | Common Stock [Member]
Warrants exercise price							$ 26.88		$ 26.88

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Shareholder's Equity - Schedule of Common Stock for Future Issuance (Details) shares in Thousands	Sep. 30, 2023 shares
Class Of Stock [Line Items]
Shares reserved for stock options and restricted stock units to purchase common stock under equity incentive plans	4,815
Stock Options And Restricted Stock Units
Class Of Stock [Line Items]
Shares reserved for stock options and restricted stock units to purchase common stock under equity incentive plans	2,020
Equity Securities
Class Of Stock [Line Items]
Shares reserved for stock options and restricted stock units to purchase common stock under equity incentive plans	932
Warrant
Class Of Stock [Line Items]
Shares reserved for stock options and restricted stock units to purchase common stock under equity incentive plans	1,863

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Collaboration Agreement - Summary of collaboration revenue agreement and deferred revenue (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Revenue Recognition and Deferred Revenue [Abstract]
Balance as of beginning of period	$ 442	$ 0
Decrease for provision of researchs services	(442)	0
Balance as of end of period	$ 0	$ 0

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Collaboration Agreement (Additional Information) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 0	$ 0	$ 0	$ 0		$ 442,000	$ 0
Revenue	0		442,000
Merck Co Inc [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue					$ 0	$ 442,000
Revenue	$ 0	$ 0	$ 442,000	$ 0

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Grant Agreement - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Research And Development Arrangement Contract To Perform For Others [Line Items]
Recognized grant revenue from federal agencies	$ 0	$ 200,000	$ 0	$ 501,000
National Institutes Of Health | Grant revenues [Member]
Research And Development Arrangement Contract To Perform For Others [Line Items]
Grant Received for Research And Development					$ 1,100,000

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Licensing Revenue Agreement - Summary Of Licensing Revenue Agreements (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Revenue Recognition and Deferred Revenue [Abstract]
Balance as of December 31, 2022	$ 0	$ 1,041
Decrease for provision of research services	0	(965)
Balance as of March 31, 2023	$ 0	$ 76

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Licensing Revenue Agreement - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended
	Jul. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Deferred Revenue Arrangement [Line Items]
License revenue recognized		$ 0				$ 442,000
Deferred revenue		0		$ 0		0	$ 0	$ 442,000	$ 0
Genentech,Inc.
Deferred Revenue Arrangement [Line Items]
Deferred revenue		0				0
Genentech,Inc. | License And Research Collaboration Agreement
Deferred Revenue Arrangement [Line Items]
License revenue recognized		0		$ 0		0	$ 965,000
Merck Neuromuscular License Agreement
Deferred Revenue Arrangement [Line Items]
License revenue recognized		$ 0	$ 5,000,000			$ 5,000,000
Milestone payments	$ 5,000,000				$ 5,000,000
Milestones and royalties on net sales					$ 255,000,000

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Stock-Based Compensation - Additional Information (Details) - USD ($)		3 Months Ended					6 Months Ended	9 Months Ended		12 Months Ended
	Dec. 31, 2022	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2020	Dec. 31, 2010	Dec. 31, 2008
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted								1,383,000
Expense recognized		$ 474,000	$ 1,054,000	$ 477,000	$ 755,000	$ 285,000		$ 3,398,000	$ 1,517,000
Amount of cost not yet recognized		$ 3,400,000						$ 3,400,000
Compensation cost not yet recognized, period for recognition								2 years
2008 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted, percentage												100.00%
Options granted								225,041
2010 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted, percentage											100.00%
Options granted								199,103
2020 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted, percentage										100.00%
Options granted	201,919
Incentive stock options granted, description										However, the exercise price of incentive stock options granted to a 10% stockholder shall not be less than 110% of the fair market value of the common stock on the date of grant and the contractual term shall not exceed ten years.
2020 Equity Incentive Plan [Member] | Voting Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted							206,000
2020 Equity Incentive Plan [Member] | Nonvoting Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted								206,000
2022 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted, percentage		100.00%						100.00%
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value		$ 267,000						$ 267,000
Restricted Stock [Member] | 2020 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted	9,809
Stock Appreciation Rights (SARs) | 2010 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares Outstanding		0						0

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Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Outstanding as of June 30, 2023	734
Outstanding Stock Options, Granted	1,383
Outstanding Stock Options, Forfeited	(98)
Outstanding Stock Options, Expired	(9)
Outstanding Stock Options as of March 31, 2023	2,010	734
Outstanding Stock Options, Exercisable as of June 30, 2023	1,008
Weighted- Average Exercise Price Per Share, Beginning Balance	$ 22.67
Weighted- Average Exercise Price Per Share, Granted	3.19
Weighted- Average Exercise Price Per Share, Forfeited	25.82
Weighted- Average Exercise Price Per Share, Expired	10.9
Weighted- Average Exercise Price Per Share, Ending Balance	9.16	$ 22.67
Weighted- Average Exercise Price Per Share, Exercisable as of June 30, 2023	$ 13.79
Weighted Average Remaining Contractual Term, Outstanding	8 years	5 years 4 months 24 days
Weighted Average Remaining Contractual Term, Exercisable as of June 30, 2023	6 years 6 months
Aggregate Intrinsic Value, Outstanding	$ 286	$ 0
Aggregate Intrinsic Value, Exercisable as of June 30, 2023	$ 51

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Stock-Based Compensation - Summary of Fair Value of Stock Options Granted for Employee and Non-Employee Awards (Details)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility	111.10%	84.20%
Expected term (years)	5 years 4 months 6 days	3 years
Risk-free interest rate	3.40%	1.60%
Expected dividend yield	0.00%	0.00%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility	113.10%	86.00%
Expected term (years)	6 years 29 days	7 years
Risk-free interest rate	4.40%	2.90%
Expected dividend yield	0.00%	0.00%

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Stock-Based Compensation - Summary of Companies Restricted Stock Activity (Detail)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-Based Payment Arrangement [Abstract]
Number of Restricted Stock, Beginning Balance | shares	175,000
Number of Restricted Stock, Released | shares	(157,000)
Number of Restricted Stock, Forfeited | shares	(8,000)
Number of Restricted Stock, ending Balance | shares	10,000
Weighted-Average Grant Date Fair Value Per Share, Beginning Balance | $ / shares	$ 26.89
Weighted-Average Grant Date Fair Value Per Share, Released | $ / shares	26.89
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	26.48
Weighted-Average Grant Date Fair Value Per Share, Ending Balance | $ / shares	$ 27.22

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Stock-Based Compensation - Summary of Total Stock-Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended					9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 474	$ 1,054	$ 477	$ 755	$ 285	$ 3,398	$ 1,517
Research and development [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	91		292			516	895
General and administrative [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 383		$ 185			$ 2,882	$ 622

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Net Loss Per Share - Summary of Basic and Diluted Net Loss per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net loss attributable to Kineta, Inc.		$ (5,380)	$ (5,585)	$ (11,445)	$ (16,439)
Denominator:
Weighted-average shares outstanding, basic	[1]	11,738	4,891	10,505	4,808
Weighted-average shares outstanding, diluted	[1]	11,738	4,891	10,505	4,808
Net loss per share, basic		$ (0.46)	$ (1.14)	$ (1.09)	$ (3.42)
Net loss per share, diluted		$ (0.46)	$ (1.14)	$ (1.09)	$ (3.42)

[1] Included in the denominator were 577,000 and 530,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2023, respectively, with an exercise price of $0.14. Included in the denominator were 155,000 and 153,000 weighted-average shares of common stock warrants for the three and nine months ended September 30, 2022, respectively, with an exercise price of $0.14.

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Net Loss Per Share - Summary of Basic and Diluted Net Loss per Share (Parenthetical) (Details) - Common Stock [Member] - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted Average Number of Shares, Contingently Issuable	577,000	155,000	530,000	153,000
Share price		$ 0.14		$ 0.14
Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share price	$ 0.14		$ 0.14

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Net Loss Per Share - Schedule of Antidilutive Securities Excluded from Computation of Diluted Weighted-average Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total	3,706	1,761	3,706	1,761
Common Stock Options [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total	2,010	721	2,010	721
Unvested restricted stock subject to repurchase [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total	10	170	10	170
Warrants to Purchase Common Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total	1,630	154	1,630	154
Vested restricted stock subject to recall [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total	56	56	56	56
Convertible Notes [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total	0	660	0	660

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Net Loss Per Share (Additional Information) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Defined contribution plan	$ 24,000	$ 30,000	$ 93,000	$ 97,000

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Related Party Transactions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
(Loss) gain on extinguishments of debt, net	$ 0		$ (236)	$ 0	$ 259
Directors
Related Party Transaction [Line Items]
Issuance of warrants				60,000
Number of shares issued	10,000			10,000
2020 Convertible Notes
Related Party Transaction [Line Items]
Convertible notes principal balance outstanding					9,800
Convertible notes					$ 1,800
Common Stock [Member]
Related Party Transaction [Line Items]
Conversion Price			$ 0.14		$ 0.14
Issuance of warrants				3,000
Executive management purchased Shares		30,000		35,000
Number of shares issued	5,000			5,000
Common Stock [Member] | Directors
Related Party Transaction [Line Items]
Number of shares issued	100,000			100,000

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Subsequent Events - Additional Information (Details) - USD ($)					3 Months Ended						9 Months Ended
	Apr. 15, 2024	Oct. 31, 2023	Oct. 03, 2023	Apr. 20, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Subsequent Event [Line Items]
Shares issued, shares								59,000				114,000
Net proceeds											$ 5,479,000	$ 0
Private Placement
Subsequent Event [Line Items]
Total offering-related fees			$ 310,000	$ 520,000
Net proceeds			$ 2,700,000	$ 5,500,000
Common Stock
Subsequent Event [Line Items]
Shares issued, shares						948,000	127,000	20,000	33,000	3,000
Share price								$ 0.14				$ 0.14
Warrant
Subsequent Event [Line Items]
Shares issued, shares					432,000						627,000
Securities Purchase Agreement
Subsequent Event [Line Items]
Shares issued, shares			110,000	948,000
Share price			$ 3.37	$ 4.21
Warrants exercise price			0.001	0.001
Securities Purchase Agreement | Private Placement
Subsequent Event [Line Items]
Share price			$ 3.25	$ 4.08
Warrants to purchase shares of common stock			890,208	1,425,179
Investors | Securities Purchase Agreement
Subsequent Event [Line Items]
Share price			$ 3.369	$ 4.209
Gross proceeds from offerings			$ 3,000,000	$ 6,000,000
Subsequent Event | Private Placement
Subsequent Event [Line Items]
Total offering-related fees		$ 310,000
Net proceeds		$ 2,700,000
Payments for private placement	$ 22,500,000
Subsequent Event | Securities Purchase Agreement
Subsequent Event [Line Items]
Shares issued, shares		110,000
Share price		$ 3.37
Warrants exercisable		780,208
Warrants exercise price		$ 0.001
Subsequent Event | Securities Purchase Agreement | Private Placement
Subsequent Event [Line Items]
Warrants exercise price		$ 3.25
Warrants to purchase shares of common stock		890,208
Subsequent Event | Securities Purchase Agreement | Private Placement | Wainwright & Co., LLC
Subsequent Event [Line Items]
Warrants exercise price		$ 4.2125
Warrants to purchase shares of common stock		44,510
Payments to related party		$ 210,000
Non-accountable expense		35,000
Legal fees		$ 50,000
Warrant term		5 years
Subsequent Event | Investors | Securities Purchase Agreement
Subsequent Event [Line Items]
Share price		$ 3.369
Gross proceeds from offerings		$ 3,000,000