8-K/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

Pursuant to Section 13 OR 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 25, 2025

IMAGENEBIO, INC.

(Exact name of registrant as specified in its charter)

Delaware	001-40287	81-1697316
(State or other jurisdiction<br> <br>of incorporation)	(Commission<br> <br>File Number)	(I.R.S. Employer<br> <br>Identification No.)
12526 High Bluff Drive
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Suite 345
San Diego, California	92130
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: 617-901-7098

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
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☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
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☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading<br>Symbol(s)	Name of each exchange<br> <br>on which registered
Common Stock, $0.001 par value	IMA	The Nasdaq Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

Explanatory Note

This Amendment No. 1 on Form 8-K/A (this “Amendment No. 1”) amends the Current Report on Form 8-K filed by ImageneBio, Inc. (f/k/a Ikena Oncology, Inc.) (the “Company”) on July 29, 2025 (the “Original Report”), in which the Company reported, among other events, the completion of the Merger (as defined in the Original Report). This Amendment No. 1 is filed to (i) update the information in Item 2.01 of the Original Report to include Management’s Discussion and Analysis of Financial Condition and Results of Operations of Inmagene (as defined in the Original Report) for the three and six months ended June 30, 2025 and 2024; and (ii) include the unaudited interim condensed financial statements of Inmagene as of and for the three and six months ended June 30, 2025 and 2024 under Item 9.01(a) of the Original Report. This Amendment No. 1 does not amend any other item of the Original Report or purport to provide an update or a discussion of any developments at the Company subsequent to the filing date of the Original Report.

Capitalized terms used but not defined herein have the meanings given to them in the Original Report.

Item 2.01	Completion of Acquisition or Disposition of Assets.

The information in Item 2.01 of the Original Report under the heading “Management’s Discussion and Analysis of Financial Condition and Results of Operations” is hereby amended by adding the following:

“Management’s Discussion and Analysis of Financial Condition and Results of Operations of Inmagene for the three and six months ended June 30, 2025 and 2024 is set forth in Exhibit 99.3 to Amendment No. 1 to this Current Report, which is incorporated herein by reference.”

Item 9.01	Financial Statements and Exhibits.

(a) Financial Statements of Business Acquired

The unaudited interim condensed financial statements of Inmagene as of and for the three and six months ended June 30, 2025 and 2024 are filed as Exhibit 99.4 to this Amendment No. 1 and are incorporated herein by reference.

(d) Exhibits

Exhibit<br>Number	Description
99.3*	Management’s Discussion and Analysis of Financial Condition and Results of Operations of Inmagene for the three and six months ended June 30, 2025 and 2024.
99.4*	Unaudited Interim Condensed Financial Statements of Inmagene as of and for the three and six months ended June 30, 2025 and 2024.
104	Cover Page Interactive Data File (embedded with the Inline XBRL document).
*	Filed herewith
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SIGNATURE

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

	IMAGENEBIO, INC.
Date: August 12, 2025	By:	/s/ Kristin Yarema, Ph.D.
		Kristin Yarema, Ph.D.
		Chief Executive Officer

EX-99.3

Exhibit 99.3

INMAGENE MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

On July 25, 2025, the Delaware corporation formerly known as “Ikena Oncology, Inc.” completed its previously announcedmerger with Inmagene Biopharmaceuticals, an exempted company with limited liability incorporated and existing under the laws of the Cayman Islands (“Inmagene”), in accordance with the terms of the Agreement and Plan of Merger, dated as ofDecember 23, 2024 (the “Merger Agreement”), by and among Ikena Oncology, Inc. (“Ikena”), Insight Merger Sub I, an exempted company with limited liability incorporated and existing under the laws of the CaymanIslands and a direct, wholly owned subsidiary of Ikena (“Merger Sub **** I”), Insight Merger Sub II, an exempted company with limited liability incorporated and existing under the laws of the Cayman Islands and adirect, wholly owned subsidiary of Ikena (“Merger Sub II”), and Inmagene, providing for the merger of Merger Sub I with and into Inmagene, with Inmagene surviving as a wholly owned subsidiary of Ikena (such transaction,the “First Merger”), and the subsequent merger of the surviving entity of the First Merger with and into Merger Sub II, with Merger Sub II surviving as a wholly owned subsidiary of Ikena (such transaction, the “SecondMerger” and, collectively with the First Merger, as appropriate, the “Merger”). Also on July 25, 2025, Ikena changed its name from “Ikena Oncology, Inc.” to “ImageneBio, Inc.” Unless otherwisestated or the context otherwise requires, the references to the “Company,” “we,” “our,” or “us” refer to Inmagene Biopharmaceuticals together with its consolidated subsidiaries prior to the Merger and toImageneBio, Inc. together with its consolidated subsidiaries following the Merger, references to “Ikena” refer to Ikena Oncology, Inc. prior to the Merger and references to “Inmagene” refer to Inmagene Biopharmaceuticalstogether with its consolidated subsidiaries prior to the Merger.

You should read the following discussion and analysis of ourfinancial condition and results of operations together with the condensed consolidated financial statements and the related notes thereto included as Exhibit 99.4 to the Current Report on Form 8-K filed withthe U.S. Securities and Exchange Commission (the “SEC”) on August 12, 2025 (the “Current Report on Form 8-K”) of which this Exhibit 99.3 is a part, as well as our audited consolidatedfinancial statements and the related notes thereto beginning on page F-37 of Ikena’s Registration Statement on Form S-4 most recently amended on June 9, 2025and declared effective on June 11, 2025 (the “Registration Statement”). The following discussion contains forward-looking statements that involve risks and uncertainties, such as statements regarding our plans, objectives,expectations, intentions and projections. Our actual results could differ materially from those described in or implied by these forward-looking statements. Factors that could cause or contribute to these differences include, but are not limited to,those discussed below and elsewhere in the Registration Statement, particularly in the sections titled “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements.” We do not intend, and undertake no obligation, toupdate these forward-looking statements, except as required by law.

Overview

We are a clinical-stage biopharmaceutical company focused on developing innovative and differentiated therapies for immunological and inflammatory (“I&I”) diseases. Our lead asset IMG-007 is a non-depleting anti-OX40 monoclonal antibody, which binds specifically to OX40 receptor on activated T cells to block their binding to OX40L without killing them. IMG-007 is being developed to potentially treat multiple I&I disorders, and initially being evaluated in atopic dermatitis (“AD”). In January 2025, we reported that in our Phase 2a AD POC trial, four-week treatment with IMG-007 resulted in a rapid onset, marked, and durable clinical activity based on multiple outcome measures. In addition, durable inhibition serum inflammatory markers of diverse Th cells, including Th1, Th2 and Th17 cells, were observed. IMG-007 was overall well-tolerated.

Since inception, we have devoted substantially all of our resources to advancing the development of our portfolio of programs, organizing and staffing the Company, business planning, raising capital, and providing general and administrative support for these operations. We do not have any programs approved for sale and have not generated any revenue from product sales. To date, we have funded our operations primarily with proceeds from the issuance of preferred shares, licensing agreements, and term loans.

We have incurred operating losses since inception. Our ability to generate product revenue sufficient to achieve profitability will depend heavily on the successful development and eventual commercialization of any programs we may develop. We generated net losses of $7.6 million and $6.3 million for the three months ended June 30, 2025 and 2024, respectively, and $13.7 million and $28.6 million for the six months ended June 30, 2025 and 2024, respectively. As of June 30, 2025, we had an accumulated deficit of $197.5 million. We expect to continue to incur significantly increased expenses for the foreseeable future if and as we:

•	advance our research and development and discovery-related development of existing and future IMG-007 programs, including potential expansion into additional indications;
•	seek and identify additional research programs and product candidates, and initiate discovery-related activities<br>and preclinical studies for those programs;
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•	complete future preclinical studies for our pipeline;
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•	pursue investigational new drug applications or comparable foreign applications that allow commencement of our<br>planned clinical trials or future clinical trials for any programs we may develop;
•	initiate enrollment and successfully complete clinical trials;
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•	pursue positive results from our ongoing and future clinical trials that support a finding of safety and<br>effectiveness, an acceptable risk-benefit profile in the intended populations and a competitive efficacy, safety and half-life profile;
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•	hire research and development, clinical, manufacturing and commercial personnel;
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•	add operational, financial and management information systems and personnel;
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•	experience any delays, challenges, or other issues associated with the preclinical and clinical development of<br>our programs, including with respect to our regulatory strategies;
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•	develop, maintain and enhance a sustainable, scalable, reproducible and transferable clinical and cGMP<br>capabilities through a third-party or our own manufacturing facility for the programs we may develop;
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•	seek, obtain and maintain regulatory approvals for any product candidates for which we successfully complete<br>clinical trials;
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•	establish a sales, marketing and distribution infrastructure to commercialize any programs for which we may<br>obtain regulatory approval;
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•	generate revenue from commercial sales of product candidates for which we receive regulatory approval, if any;<br>
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•	maintain the safety, tolerability and efficacy profile of any product we may develop in additional indications<br>following approval in one indication;
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•	maintain, expand, enforce, defend and protect our intellectual property portfolio and other intellectual property<br>protection or regulatory exclusivity for any products we may develop and defend any intellectual property-related claims;
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•	further acquire or in-license product candidates or programs,<br>intellectual property and technologies;
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•	maintain our current collaboration and establish and maintain any future collaborations, including making<br>milestone, royalty or other payments thereunder; and
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•	incur additional costs of operating as a public company, including increased costs of audit, legal, regulatory<br>and tax-related services associated with maintaining compliance with an exchange listing and SEC requirements, director and officer insurance premiums and investor and public relations costs.<br>
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Any changes in the outcome of any of these variables with respect to the development of programs that we may identify could mean a significant change in the costs and timing associated with the development of such programs. For example, if the Food and Drug Administration (“FDA”) or another comparable regulatory authority were to require us to conduct clinical trials beyond those that we currently anticipate will be required to complete clinical development and obtain regulatory approval of one or more of our product candidates, or if we experience significant delays in our preclinical studies or clinical trials, we would be required to expend significant additional financial resources and time to advance and complete clinical development. We may never obtain regulatory approval for IMG-007 or any future product candidate.

We will not generate revenue from product sales unless and until we successfully initiate and complete clinical development and obtain regulatory approval for IMG-007 and any future product candidates. If we obtain regulatory approval for IMG-007 or any future product candidate and do not enter into a commercialization partnership, we expect to incur significant expenses related to developing our commercialization capability to support product sales, manufacturing, marketing and distribution.

As a result of all the foregoing, we expect to need substantial additional funding to support our continued operations and growth strategy. Until such a time as we can generate significant revenue from product sales, if ever, we expect to finance our operations through the sale of equity, debt financings or other capital sources, including collaborations with other companies or other strategic transactions. We may be unable to raise additional funds or enter into such other agreements on favorable terms, or at all. If we fail to raise capital or enter into such agreements as, and when, needed, we may have to significantly delay, scale back or discontinue the development and commercialization of IMG-007 or any future product candidate.

Because of the numerous risks associated with product development, we are unable to accurately predict the timing or amount of increased expenses or when or if we will be able to achieve or maintain profitability. Even if we are able to generate product sales, we may not become profitable. If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and be forced to reduce or terminate our operations.

See the sections titled “—Liquidity and Capital Resources”.

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Recent Developments

On December 23, 2024, Ikena, Merger Sub I, Merger Sub II and Inmagene entered into the Merger Agreement, pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub I merged with and into Inmagene, with Inmagene surviving as a wholly owned subsidiary of Ikena, and immediately after, the surviving entity merged with and into Merger Sub II, with Merger Sub II surviving as a wholly owned subsidiary of Ikena (the “Merger”). In connection with the Merger, Ikena changed its corporate name to “ImageneBio, Inc.” and Merger Sub II changed its name to “Imagene Biopharmaceuticals.” On July 25, 2025, Ikena completed its Merger with us and changed its name from Ikena Oncology, Inc. to ImageneBio, Inc.

After the date of the second quarter ending June 30, 2025, pursuant to the terms of the Merger Agreement, and prior to the closing of the Merger, we divested all of our pre-Merger assets other than IMG-007 and sold and transferred all of the business related assets, business and operations controlled by us to Miragene Inc, a newly formed private company, for a promissory note in the amount of $8.9 million (the “Legacy Asset Transaction”). As a result, IMG-007, a non-depleting anti-OX40 monoclonal antibody, for the treatment of AD and other potential indications, will be the only product candidate of the combined company in clinical development and the only product candidate the combined company plans to initially develop.

The legacy shareholders of Inmagene own and control Miragene Inc. In connection with the Legacy Asset Transaction, we entered into a Transition Services Agreement with Miragene Inc for the provision of certain transitional services related to the ongoing operations of our business with respect to the IMG-007 program, which may include services related to chemistry, manufacturing and controls, regulatory affairs, clinical trial support and operations, translational science research and support, bioanalytics and pharmacovigilance. The initial term of the Transition Services Agreement is six months, which shall be automatically extended for an additional six months unless we provide written notice to terminate. We may extend the term for up to an additional 12 months upon a 60-day written notice prior to the end of the initial term. We paid Miragene $1.25 million as a prepayment for the services to be provided during the initial term. Up to $1.25 million may be payable if the initial term is automatically extended. If we extend the Transition Services Agreement beyond the initial term, Miragene will provide services at an annual FTE rate of $200,000.

Impact of General Economic Risk Factors on Inmagene’s Operations

Uncertainty in the global economy presents significant risks to our business. We are subject to continuing risks and uncertainties in connection with the current macroeconomic environment, including elevated and fluctuating inflation, fluctuating interest rates, new or increased tariffs and other barriers to trade, changes to fiscal and monetary policy, changes in government regulatory policies, or government budget dynamics (particularly in the pharmaceutical and biotech areas), geopolitical factors, and supply chain disruptions. While we are closely monitoring the impact of the current macroeconomic and geopolitical conditions on all aspects of our business, including the impacts on participants in any future clinical trials and our employees, suppliers, vendors and business partners and our future access to capital, the ultimate extent of the impact on our business remains highly uncertain and will depend on future developments and factors that continue to evolve. Most of these developments and factors are outside of our control and could exist for an extended period of time. We will continue to evaluate the nature and extent of the potential impacts to our business, results of operations, liquidity and capital resources.

Components of Resultsof Operations

License Revenue

We have not generated any revenue from product sales. Our revenue has been derived from license payments under collaboration and license agreements.

Operating Expenses

Our operating expenses consist of (i) research and development expenses and (ii) general and administrative expenses***.***

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Research and Development

Research and development expenses consist primarily of costs incurred in connection with the research and development of our programs. These expenses include:

•	external research and development expenses incurred under arrangements with third parties, such as contract<br>research organizations (“CROs”), consultants, members of our scientific and therapeutic advisory boards, and contract manufacturing organizations (“CMOs”);
•	employee-related expenses, including salaries, benefits, travel, and share-based compensation;<br>
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•	facilities, depreciation and other allocated expenses, which include direct and allocated expenses for rent and<br>maintenance of facilities, depreciation of leasehold improvements and equipment, and laboratory supplies;
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•	license and sub-license fees; and
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•	gains and losses on disposal of research and development property and equipment.
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We expense research and development costs as incurred. Costs of certain activities are recognized based on an evaluation of the progress to completion of specific tasks. However, payments made prior to the receipt of goods or services that will be used or rendered for future research and development activities are deferred and capitalized as research and development prepaid expenses on our condensed consolidated balance sheets. The capitalized amounts are recognized as expense as the goods are delivered or services are performed. The successful development of any future product candidates is highly uncertain. Therefore, we cannot reasonably estimate or know the nature, timing and estimated costs of the efforts that would be necessary to complete the potential development and commercialization of any future product candidates.

General and Administrative

General and administrative expenses consist primarily of personnel-related expenses, including salaries, bonuses, benefits and share-based compensation, for individuals in our executive, finance, operations, human resources, business development and other administrative functions. Other significant general and administrative expenses include legal fees relating to corporate matters and patent-related activities, allocated facilities and other overhead costs, including insurance and information technology, and professional and consulting fees associated with accounting, audit, tax and investor and public relations***.***

We expect our general and administrative expenses to increase over the next several years as we continue our research and development activities, prepare for potential commercialization of IMG-007 and any future product candidates, as well as expand our operations and begin operating as a public company following the Merger. These increases will likely include increases related to the hiring of additional personnel and legal, regulatory and other fees and services associated with maintaining compliance with listing rules and SEC requirements, director and officer insurance premiums and investor relations costs associated with being a public company.

Interest (Expense) Income

Interest (expense) income consists of the accrued interest on the Term Loan Advances from Ikena to us (as defined in Note 4 to our condensed consolidated financial statements) and interest earned on cash, cash equivalents and short-term investments.

Other Income, Net

Other income, net primarily relates to government assistance in the form of grants for qualifying property and equipment, and gains and losses resulting from foreign currency transactions which are denominated in currencies other than the functional currency.

Income Taxes

There was no income tax provision for the six months ended June 30, 2025 and 2024. We have recorded a full valuation allowance against our net deferred tax assets at each balance sheet date, as we believe that it is not more likely than not that no benefit will be realized due to the cumulative losses generated to date and expectation of future losses.

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Results of Operations

Comparison of the Three Months Ended June 30, 2025 and June, 2024

The following table summarizes our results of operations for the three months ended June 30, 2025 and 2024 (in thousands):

	For the Three Months Ended June 30
	2025			2024			Change		Change %
License revenue	$	—		$	—					0	%
Operating expenses:
Research and development		5,654			4,476					26	%
General and administrative		1,705			1,909			)		(11	)%
Total operating expenses		7,359			6,385					15	%
Loss from operations		(7,359	)		(6,385	)		)		15	%
Other income (expense):
Interest (expense) income		(194	)		298			)		(165	)%
Other expense, net		(32	)		(172	)				(81	)%
Total other (expense) income, net		(226	)		126			)		(279	)%
Loss before income taxes		(7,585	)		(6,259	)		)		21	%
Provision for income taxes		—			—					0	%
Net loss	$	(7,585	)	$	(6,259	)		)		21	%

All values are in US Dollars.

License Revenue

There was no license revenue for the three months ended June 30, 2025 and 2024.

Research and Development Expenses

Research and development expenses for the three months ended June 30, 2025 were $5.7 million compared to $4.5 million for the three months ended June 30, 2024. The increase of $1.2 million was primarily due to a $1.5 million increase in clinical CRO costs due to a new study for IMG-007 AD Phase 2b that was launched in the first quarter of 2025, while most of the clinical studies in the prior year were completed in the second quarter of the prior year. The increase was slightly offset by a $0.3 million decrease in compensation and related costs resulting from decreased headcount in research and development staff.

General and Administrative Expenses

General and administrative expenses for the three months ended June 30, 2025 were $1.7 million compared to $1.9 million for the three months ended June 30, 2024. The decrease was primarily a result of $0.2 million lower data storage fees due to less business development activities compared to the prior year period and a $0.4 million decrease of lease and depreciation costs in line with the Hangzhou Lab closure. These cost reductions were partially offset by the increased professional fees related to the contemplated merger with Ikena of $0.4 million.

Interest (Expense) Income

Interest (expense) income for the three months ended June 30, 2025 was ($0.2 million) compared to $0.3 million for the three months ended June 30, 2024. The decrease of $0.5 million was primarily due to $0.4 million of interest expense recorded on the initial Term Loan Advance, which was borrowed in December 2024.

Other Expense, Net

Other expense, net for the three months ended June 30, 2025 was $0.1 million compared to $0.2 million for the three months ended June 30, 2024. The decrease of $0.1 million was primarily due to fluctuations in the exchange rates of transactions denominated in foreign currencies.

Comparison of the Six Months Ended June 30, 2025 and June, 2024

The following table summarizes our results of operations for the six months ended June 30, 2025 and 2024 (in thousands):

	For the Six Months Ended June 30
	2025		2024		Change		Change %
License revenue	$	800	$	—				100	%
Operating expenses:
Research and development		9,693		24,465		)		(60	)%
General and administrative		4,460		4,357				2	%
Total operating expenses		14,153		28,822		)		(51	)%

All values are in US Dollars.

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Loss from operations		(13,353	)		(28,822	)		15,469		(54	)%
Other income (expense):
Interest (expense) income		(313	)		298			(611	)	(205	)%
Other income (expense), net		4			(49	)		53		(108	)%
Total other (expense) income, net		(309	)		249			(558	)	(224	)%
Loss before income taxes		(13,662	)		(28,573	)		14,911		(52	)%
Provision for income taxes		—			—			—		0	%
Net loss	$	(13,662	)	$	(28,573	)	$	14,911		(52	)%

Licensing Revenue

Licensing revenue for the six months ended June 30, 2025 was $0.8 million which resulted from a non-refundable payment from the IMG-008 Agreement (as defined in Note 9 to our condensed consolidated financial statements). For the six months ended June 30, 2024, there was no license revenue.

Research and Development Expenses

Research and development expenses for the six months ended June 30, 2025 were $9.7 million compared to $24.5 million for the six months ended June 30, 2024. The decrease of $14.8 million is a result of a $14.0 million decrease in research and development expense related to the exercise of our option under the Hutchmed Agreement (as defined below) in the prior year. Staff compensation also decreased by $0.7 million because of a decrease in research and development headcount.

General andAdministrative Expenses

General and administrative expenses for the six months ended June 30, 2025 and 2024 was $4.4 million. The general and administrative expenses remained flat period over period as increased professional fees were offset by the decreased lease and depreciation costs related to the Hangzhou Lab closure.

Interest (Expense) Income

Interest (expense) income for the six months ended June 30, 2025 was ($0.3 million) compared to $0.3 million for the six months ended June 30, 2024. The decrease of $0.6 million was primarily due to $0.4 million of interest recorded on the initial Term Loan Advance, which was borrowed in December 2024. An additional decrease of $0.2 million was a result of lower interest income of short-term investments due to the lower investment balance compared to the prior year.

Other Income (Expense), Net

Other income (expense), net was insignificant for the six months ended June 30, 2025 and 2024.

Liquidity and Capital Resources

Sources of Liquidity

We have incurred recurring losses and negative cash flows from operations since our inception. For the three months ended June 30, 2025, we incurred a net loss of $7.6 million and used $11.9 million of cash in operating activities. For the six months ended June 30, 2025, we incurred a net loss of $13.7 million and used $19.1 million of cash in operating activities. As of June 30, 2025, we had an accumulated deficit of $197.5 million and cash and cash equivalents of $6.0 million.

Since inception, we have devoted substantially all of our resources to advancing the development of our portfolio of programs, organizing and staffing the Company, business planning, raising capital, and providing general and administrative support for these operations. Current and future programs will require significant research and development efforts, including preclinical and clinical trials, and regulatory approvals for commercialization. These efforts require significant amounts of additional capital, adequate personnel, and infrastructure. Even if our development efforts are successful, it is uncertain when, if ever, we will realize significant revenue from product sales. If we obtain regulatory approval for any of our product candidates and start to generate revenue, we expect to incur significant expenses related to developing our internal commercialization capability to support product sales, marketing, and distribution.

As a result, we will need substantial additional funding to support our operating activities as we advance our potential product candidates through development, seek regulatory approval, and prepare for and, if any of our product candidates are approved, proceed to commercialization. Until such time as we can generate significant revenue from product sales, if ever, we expect to finance our operating activities through a combination of equity offerings, government of private party grants, debt financings and license and collaboration agreements. Adequate funding may not be available to us on acceptable terms, or at all.

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Concurrent with the execution of the Merger Agreement, Ikena entered into subscription agreements with certain investors to which Ikena agreed to issue and sell to investors shares of Ikena common stock for gross proceeds of $75.0 million (the “Ikena concurrent financing”). The Ikena concurrent financing closed immediately after the second effective time (as described under the terms of the subscription agreements). The net proceeds from the Ikena concurrent financing are expected to advance the combined company’s discovery and clinical phase pipeline, business development activities, working capital, and other general corporate purposes.

Concurrent with the execution of the Merger Agreement, Inmagene and Ikena entered into the Loan Agreement, pursuant to which Ikena has agreed to lend up to $22.5 million in Term Loan Advances in increments of at least $7.5 million, subject to certain drawdown conditions, of which the first advance of $7.5 million was funded in December 2024. In April 2025, the Company received a second advance of $7.5 million and in May 2025, the Company received the third advance of $7.5 million (see Note 4 to our condensed consolidated financial statements). As of June 30, 2025, the Company cannot draw any additional Term Loan Advances. The Term Loan Advances shall bear interest, on the outstanding daily balance thereof, at a rate equal to 6.0% per annum. The Term Loan Advances are secured by all assets of Inmagene and its subsidiaries in respect of anti-OX40 monoclonal antibody asset, IMG-007. Upon consummation of the Merger on July 25, 2025, all Obligations (as defined in the Loan Agreement) were automatically forgiven, and the Loan Agreement terminated.

Based upon Management’s expectation of continuing operating losses for the foreseeable future, the Company has concluded there is substantial doubt about its ability to continue as a going concern as of June 30, 2025.

If we are unable to obtain additional funding, we will assess our capital resources and may be required to delay, reduce the scope of, or eliminate some or all of our planned operations, which may have a material adverse effect on our business, financial condition, results of operations, and ability to operate as a going concern. Our condensed consolidated financial statements do not include any adjustments that may result if we are not able to continue as a going concern.

Cash Flows

Comparison of the Six Months Ended June 30, 2025 and June 30, 2024

The following table sets forth a summary of the net cash flow activity for the six months ended June 30, 2025 and 2024 (in thousands):

	Six Months Ended June,
	2025			2024
Net cash used in operating activities	$	(19,131	)	$	(15,138	)
Net cash provided by investing activities		—			10,151
Net cash provided by financing activities		13,044			—
Effects of exchange rates on cash and cash equivalents		(10	)		4
Net (decrease) increase in cash and cash equivalents	$	(6,097	)	$	(4,983	)

Operating Activities

Net cash used in operating activities for the six months ended June 30, 2025 was $19.1 million, consisting primarily of net loss incurred during the period of $13.7 million and a net change of $6.1 million in our operating assets and liabilities, partially offset by non-cash charges of $0.6 million. The non-cash charges included $0.4 million in non-cash interest expense and $0.2 million of amortization of right-of-use assets. The net change in operating assets and liabilities primarily related to a $5.9 million increase in prepaid expenses and other current assets, a $1.9 million decrease in accrued expenses and other current liabilities, and a $0.1 million decrease in operating lease liabilities, slightly offset by a $0.3 million increase in accounts payable and a $0.1 million decrease in other noncurrent assets.

Net cash used in operating activities for the six months ended June 30, 2024, was $15.1 million, consisting primarily of net loss incurred during the period of $28.6 million and a net change of $1.7 million in our operating assets and liabilities, partially offset by $15.3 million in non-cash charges. The non-cash charges included $14.0 million of non-cash research and development expense for the commitment of ordinary shares related to the Hutchmed Agreement, $1.1 million in depreciation and amortization and $0.2 million of amortization of right-of-use assets. The net change in operating assets and liabilities primarily related to a $2.0 million decrease in accrued expenses and other current liabilities, a $0.3 million decrease in operating lease liabilities and $0.3 million increase in prepaid expenses and other current assets, partially offset by a $0.7 million increase in accounts payable and a $0.1 million decrease in other non-current assets.

7

Investing Activities

Net cash provided by investing activities for the six months ended June 30, 2025 was zero.

Net cash provided by investing activities for the six months ended June 30, 2024 was $10.2 million and was attributed to maturities and sales of short-term investments.

Financing Activities

Net cash provided by financing activities for the six months ended June 30, 2025 was $13.0 million, consisting primarily of $15.0 million of proceeds from the Term Loan, slightly offset by $2.0 million paid for deferred offering costs related to the contemplated merger with Ikena.

Net cash provided by financing activities for the six months ended June, 2024 was zero.

Contractual Obligations and Other Commitments

We have entered into contracts in the normal course of business with suppliers, CROs, CMOs, and clinical trial sites. These agreements provide for termination at the request of either party generally with less than one-year notice and, therefore, we believe that our non-cancelable obligations under these agreements are not material. We do not currently expect any of these agreements to be terminated and did not have any non-cancelable obligations under these agreements as of the six months ended June 30, 2025.

We have milestones, royalties and/or other payments due to third parties under our existing license and collaboration agreements. See Note 9 to our condensed consolidated financial statements. We cannot estimate when such payments will be due, and none of these events were probable to occur as of June 30, 2025.

Lease Obligations

As of June 30, 2025, we had two existing leases for office facilities in the United States and China. These leases are classified as operating lease agreements that expire at various dates from November 2025 through December 2026. Our leases do not include options to terminate prior to the expiration date.

The United States lease agreement contains scheduled rent increases over the lease term. Under the terms of the lease agreements, we are responsible for certain property management fees, taxes, and common area maintenance expenses.

Future minimum commitments under these leases are $0.4 million as of June 30, 2025 of which $0.1 million is due in less than 12 months, and $0.3 million is due in greater than 12 months.

Term Loan

Concurrent with the execution of the Merger Agreement, we received $7.5 million of the initial Term Loan Advance in December 2024. The Term Loan Advances shall bear interest, on the outstanding daily balance thereof, at a rate of 6.0% per annum, and may be prepaid at any time without premium or penalty.

Under the Loan Agreement, we cannot draw any additional Term Loan Advances as of June 30, 2025. The first tranche of $7.5 million was taken in December 2024, the second tranche of $7.5 million was taken in April 2025 and the third tranche of $7.5 million was taken in May 2025. We recorded the initial Term Loan Advance as a current liability as the initial Term Loan Advance will mature and become due and payable six months from the termination of the Merger Agreement should the Merger be terminated. Upon consummation of the Merger, all unpaid Obligations (as defined in the Loan Agreement), including the loan principal and any accrued but unpaid interest, was automatically forgiven. We did not incur any loan fees to establish this loan. As of June 30, 2025, the outstanding principal balance from the initial Term Loan Advance of $22.5 million and the corresponding accrued interest of $0.4 million were included within term loan on the condensed consolidated balance sheet (see Note 4 to our condensed consolidated financial statements).

Critical Accounting Estimates

Our discussion and analysis of our results of operations and liquidity and capital resources are based on our condensed consolidated financial statements which have been prepared in accordance with generally accepted accounting principles in the United States of America. Our significant accounting policies are more fully described in Note 2 to our condensed consolidated financial statements. The preparation of our condensed consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, expenses and the related disclosures of contingent liabilities in our condensed consolidated financial statements and accompanying notes. We base our estimates and assumptions on historical experience and other factors that we believe to be reasonable under the circumstances. We evaluate our estimates and judgments on an ongoing basis. Actual results may differ significantly from these estimates under different assumptions, judgments or conditions.

8

There have been no significant changes in our critical accounting policies and estimates during the six months ended June 30, 2025, as compared to the twelve months ended December 31, 2024.

Revenue Recognition

We recognize revenue in accordance with ASC 606, Revenue from Contracts with Customers (“ASC 606”), which applies to all contracts with customers, except for elements of certain contracts that are within the scope of other standards, such as collaboration arrangements.

Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, we perform the following five steps:

(i)	Identify the contract(s) with a customer;
(ii)	Identify the performance obligations in the contract, including whether they are distinct;<br>
---	---
(iii)	Determine the transaction price, including the constraint on variable consideration;
---	---
(iv)	Allocate the transaction price to the performance obligations in the contract; and
---	---
(v)	Recognize revenue when (or as) we satisfy each performance obligation.
---	---

We only apply the five- step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, we assess the goods or services promised within each contract and determine those that are performance obligations and assess whether each promised good or service is distinct. A performance obligation is a promise in an agreement to transfer a distinct good or service to the customer. If a promised good or service is not distinct, it is combined with other promised goods or services into a performance obligation.

The total consideration which we expect to collect in exchange for our goods or services is an estimate and may be fixed or variable. We constrain the estimated variable consideration when we assess it is probable that a significant reversal in the amount of cumulative revenue recognized may occur in future periods. The transaction price is re-evaluated, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as uncertain events are resolved or other changes in circumstances occur. Revenue is recognized when performance obligations in the contracts are satisfied, in the amount reflecting the expected consideration to be received from the goods or services transferred to the customers. Consideration received in advance is recorded as deferred revenue and is recognized when or as the related performance obligation is satisfied. The principal activities from which we generate revenue include licensing agreements and collaboration agreements. License revenue primarily represents amounts earned under agreements that license our intellectual property to other companies. Consideration under these contracts generally includes a nonrefundable upfront payment, development, regulatory and commercial milestones and royalties based on net sales of approved products. Collaboration revenue primarily represents amounts earned under strategic collaboration arrangements with third parties for research and other licenses, development, and commercialization of certain product candidates. Under such arrangements, consideration typically includes fixed consideration in the form of an upfront payment and variable consideration in the form of potential development, regulatory, and commercial milestone payments, license fees, funding of research and development services and preclinical and clinical material, and royalties on net sales of licensed products. See Note 9, “Collaborative Arrangements and Licensing Agreements” to our condensed consolidated financial statements.

Research and Development Expenses

Our research and development expenses include estimates of our expenses resulting from obligations under contracts with vendors, consultants and CROs in connection with conducting research and development activities. The financial terms of these contracts are subject to negotiations, which vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided under such contracts. We reflect research and development expenses in our condensed consolidated financial statements by matching those expenses with the period in which services and efforts are expended. We account for these expenses according to the progress of the preclinical or clinical study as measured by the timing of various aspects of the study or related activities. We determine clinical trial cost estimates through review of the underlying contracts along with preparation of financial models taking into account discussions with research and other key personnel and outsider service providers as to the progress of studies or other services being conducted. During the course of a study, we adjust our rate of expense recognition if actual results differ from estimates on a cumulative catch-up basis.

9

Share-Based Compensation

We measure share-based compensation expense for all share-based awards with service-based and performance-based vesting conditions at the grant date based on the fair value measurement of the award. Compensation expense for service-based awards is recognized over the requisite service period, which is generally the vesting period of the respective award. We use the straight-line method to record the expense of awards with service-based vesting conditions. We use the graded-vesting method to record the expense of awards with both service-based and performance-based vesting conditions, commencing when achievement of the performance condition becomes probable. Expense is adjusted for actual forfeitures of unvested awards as they occur. Prior to the Merger, we calculated the fair value measurement of share options using the Black-Scholes-Merton option-pricing valuation model (“Black-Scholes model”). The Black-Scholes model requires the use of subjective and complex assumptions, which determine the fair value of share-based awards, including the option’s expected term and the price volatility of the underlying shares. We calculate the fair value of options granted by using the Black-Scholes model with assumptions below.

•	Fair value of ordinary shares: The fair value of our ordinary shares is determined on a periodic basis, as<br>determined by the Inmagene board, with the assistance of an independent third-party valuation expert. These valuations are determined in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Technical<br>Practice Aid (Valuation of Privately-Held-Company Equity Securities Issued as Compensation). The assumptions underlying these valuations represent management’s best estimates, which involved inherent uncertainties and the application of<br>significant levels of management judgment. Management considers, among other things, our business, financial condition and results of operations, including related industry trends affecting its operations; the likelihood of achieving a liquidity<br>event, such as an initial public offering (“IPO”), or sale, given prevailing market conditions; the lack of marketability of our ordinary shares; the market performance of comparable publicly traded companies; and U.S. and global economic<br>and capital market conditions.
•	Risk-free interest rate: We base the risk-free interest rate assumption on the U.S. Treasury’s rates for<br>U.S. Treasury zero-coupon bonds with maturities similar to those of the expected term of the award being valued.
---	---
•	Expected volatility: The expected volatility assumption is based on volatilities of a peer group of similar<br>companies whose share prices are publicly available. The peer group was developed based on companies in the clinical stage biopharmaceutical industry.
---	---
•	Expected term: The expected term represents the period of time that options are expected to be outstanding.<br>Because we do not have historical exercise behavior, it determines the expected term assumption using the simplified method, which is an average of the contractual term of the option and its vesting period.
---	---
•	Expected dividend yield: We base the expected dividend yield assumption on the fact that it has never paid cash<br>dividends and has no present intention to pay cash dividends.
---	---

Recent Accounting Pronouncements

For this information, refer to Note 2 of our condensed consolidated financial statements.

Off-Balance Sheet Arrangements

During the periods presented, we did not have, nor do we currently have, any off-balance sheet arrangements as defined in the rules and regulations of the SEC.

10

EX-99.4

Exhibit 99.4

INMAGENE BIOPHARMACEUTICALS

INDEX TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

	Page(s)
Condensed Consolidated Financial Statements
Condensed Consolidated Balance Sheets as of June 30, 2025 and December 31, 2024		F-2
Condensed Consolidated Statements of Operations and Comprehensive Loss for the Three and Six<br>Months Ended June 30, 2025 and 2024		F-3
Condensed Consolidated Statements of Redeemable Convertible Preferred Shares and<br>Shareholders’ Deficit for the Three and Six Months Ended June 30, 2025 and 2024		F-4
Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2025 and<br>2024		F-5
Notes to Condensed Consolidated Financial Statements		F-6 – F-20

F-1

INMAGENE BIOPHARMACEUTICALS

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(Inthousands, except share and per share amounts)

			December 31, 2024
Assets
Current assets:
Cash and cash equivalents	6,021		$	12,118
Prepaid expenses and other current assets	6,561			350
Total current assets	12,582			12,468
Non-current assets:
Operating lease<br>right-of-use assets, net	392			547
Other non-current assets	1,014			1,019
Deferred offering costs	5,138			1,888
Total assets	19,126		$	15,922
Liabilities, Redeemable Convertible Preferred Shares and Shareholders’<br>Deficit
Current liabilities:
Accounts payable	6,554		$	5,290
Accrued expenses and other current liabilities	4,412			3,460
Deferred revenue, current	—			650
Lease liabilities, current	255			309
Term loan	22,893			7,500
Total current liabilities	34,114			17,209
Non-current liabilities:
Lease liabilities, non-current	124			239
Total liabilities	34,238			17,448
Commitments and contingencies (Note 8)
Redeemable convertible preferred shares:
Series Seed redeemable convertible preferred shares - 0.00005 par value;<br>71,428,571 shares authorized, issued and outstanding as of June 30, 2025 and December 31, 2024; liquidation preference of 1,000 as of June 30, 2025 and December 31, 2024	994			919
Series B redeemable convertible preferred shares - 0.00005 par value,<br>239,156,361 shares authorized, issued and outstanding as of June 30, 2025 and December 31, 2024; liquidation preference of 30,982 and 29,943 as of June 30, 2025 and December 31, 2024, respectively	30,088			28,966
Series C-1 redeemable convertible preferred shares -<br>0.00005 par value; 290,202,451 shares authorized, and 270,636,854 issued and outstanding as of June 30, 2025 and December 31, 2024; liquidation preference of 86,513 and 83,507 as of June 30, 2025 and December 31, 2024,<br>respectively	84,780			81,714
Series C-2 redeemable convertible preferred shares -<br>0.00005 par value; 351,591,430 shares authorized, and 127,875,914 issued and outstanding as of June 30, 2025 and December 31, 2024; liquidation preference of 50,929 and 49,125 as of June 30, 2025 and December 31, 2024,<br>respectively	49,377			47,440
Total redeemable convertible preferred shares	165,239			159,039
Shareholders’ deficit:
Series A convertible preferred shares - 0.00005 par value; 326,079,495 shares authorized,<br>issued and outstanding as of June 30, 2025 and December 31, 2024	18,967			18,967
Ordinary shares - 0.00005 par value, 18,721,541,692 shares authorized as of June 30, 2025<br>and December 31, 2024; 462,684,023 and 462,105,898 shares issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	17			17
Additional paid-in capital	—			2,142
Accumulated deficit	(197,518	)		(179,900	)
Accumulated other comprehensive loss	(1,817	)		(1,791	)
Total shareholders’ deficit	(180,351	)		(160,565	)
Total liabilities, redeemable convertible preferred shares and shareholders’<br>deficit	19,126		$	15,922

All values are in US Dollars.

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements

F-2

INMAGENE BIOPHARMACEUTICALS

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(Unaudited)

(Inthousands, except share and per share amounts)

	For the Three Months Ended<br>June 30						For the Six Months Ended<br>June 30
	2025			2024			2025			2024
License revenue	$	—		$	—		$	800		$	—
Operating expenses:
Research and development		5,654			4,476			9,693			24,465
General and administrative		1,705			1,909			4,460			4,357
Total operating expenses		7,359			6,385			14,153			28,822
Loss from operations		(7,359	)		(6,385	)		(13,353	)		(28,822	)
Other income (expense):
Interest (expense) income, net		(194	)		298			(313	)		298
Other (expense) income, net		(32	)		(172	)		4			(49	)
Total other (expense) income, net		(226	)		126			(309	)		249
Loss before income taxes		(7,585	)		(6,259	)		(13,662	)		(28,573	)
Provision for income taxes		—			—			—			—
Net loss	$	(7,585	)	$	(6,259	)	$	(13,662	)	$	(28,573	)
Less: Accretion of redeemable convertible preferred shares		3,149			2,908			6,200			5,759
Net loss attributable to ordinary shareholders	$	(10,734	)	$	(9,167	)	$	(19,862	)	$	(34,332	)
Loss per share ordinary share– basic and diluted:
Ordinary shares	$	(4.46	)	$	(4.64	)	$	(8.26	)	$	(17.38	)
Series A convertible preferred shares		(4.46	)		(4.64	)		(8.26	)		(17.38	)
Weighted average shares used to compute basic and diluted loss per share:
Ordinary shares		1,411,649			980,803			1,410,811			980,803
Series A convertible preferred shares		994,869			994,869			994,869			994,869
Comprehensive loss:
Net loss	$	(7,585	)	$	(6,259	)	$	(13,662	)	$	(28,573	)
Other comprehensive loss:
Foreign currency translation adjustment		(17	)		(62	)		(26	)		(100	)
Total comprehensive loss	$	(7,602	)	$	(6,321	)	$	(13,688	)	$	(28,673	)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements

F-3

INMAGENE BIOPHARMACEUTICALS

CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED SHARES AND SHAREHOLDERS’ DEFICIT

(Unaudited)

(Inthousands, except share data)

	Redeemable Convertible Preferred Shares
	Series SeedPreferred<br>Shares				Series BPreferred<br>Shares		Series C-1 Preferred<br>Shares				Series C-2 Preferred<br>Shares				Total<br>Redeemable<br>Convertible		Series A<br>Preferred<br>Shares		Ordinary Shares				Additional<br>Paid-In<br>Capital				Accumulated<br>Deficit			Accumulated<br>Other<br>Comprehensive<br>Loss						TotalShareholders’Deficit
	Shares		Amount		Shares		Amount		Shares		Amount		Shares		Amount		Preferred Shares		Shares		Amount		Shares		Amount
Balance at December 31, 2024		71,428,571	$	919		239,156,361	$	28,966		270,636,854	$	81,714		127,875,914	$	47,440	$	159,039		326,079,495	$	18,967		462,105,898	$	17	$	2,142		$	(179,900	)	$	(1,791	)	$	(160,565	)
Issuance of ordinary shares upon exercise of stock options		—		—		—		—		—		—		—		—		—		—		—		578,125		—		45			—			—			45
Stock based compensation		—		—		—		—		—		—		—		—		—		—		—		—		—		57			—			—			57
Accretion of Redeemable Convertible Preferred Shares to redemption value		—		36		—		552		—		1,510		—		953		3,051		—		—		—		—		(2,244	)		(807	)		—			(3,051	)
Foreign currency translation adjustment		—		—		—		—		—		—		—		—		—		—		—		—		—		—			—			(9	)		(9	)
Net loss		—		—		—		—		—		—		—		—		—		—		—		—		—		—			(6,077	)		—			(6,077	)
Balance at March 31, 2025		71,428,571	$	955		239,156,361	$	29,518		270,636,854	$	83,224		127,875,914	$	48,393	$	162,090		326,079,495	$	18,967		462,684,023	$	17	$	—		$	(186,784	)	$	(1,800	)	$	(169,600	)
Accretion of Redeemable Convertible Preferred Shares to redemption value		—		39		—		570		—		1,556		—		984		3,149		—		—		—		—		—			(3,149	)		—			(3,149	)
Foreign currency translation adjustment		—		—		—		—		—		—		—		—		—		—		—		—		—		—			—			(17	)		(17	)
Net loss		—		—		—		—		—		—		—		—				—		—		—		—		—		$	(7,585	)		—		$	(7,585	)
Balance at June 30, 2025		71,428,571	$	994		239,156,361	$	30,088		270,636,854		84,780		127,875,914	$	49,377	$	165,239		326,079,495	$	18,967		462,684,023	$	17	$	—		$	(197,518	)	$	(1,817	)	$	(180,351	)
Balance at December 31, 2023		71,428,571	$	785		239,156,361	$	26,825		270,636,854	$	75,859		127,875,914	$	43,754		147,223		326,079,495	$	18,967		321,469,306	$	10	$	—		$	(143,332	)	$	(1,753	)	$	(126,108	)
Ordinary shares issuable pursuant to Hutchmed agreement		—		—		—		—		—		—		—		—		—		—		—		—		—		13,965			—			—			13,965
Accretion of Redeemable Convertible Preferred Shares to redemption value		—		31		—		517		—		1,414		—		889		2,851		—		—		—		—		(2,851	)		—			—			(2,851	)
Foreign currency translation adjustment		—		—		—		—		—		—		—		—		—		—		—		—		—		—			—			(38	)		(38	)
Net loss		—		—		—		—		—		—		—		—		—		—		—		—		—		—			(22,314	)		—			(22,314	)
Balance at March 31, 2024		71,428,571	$	816		239,156,361	$	27,342		270,636,854	$	77,273		127,875,914	$	44,643	$	150,074		326,079,495	$	18,967		321,469,306	$	10	$	11,114		$	(165,646	)	$	(1,791	)	$	(137,346	)
Accretion of Redeemable Convertible Preferred Shares to redemption value		—		33		—		527		—		1,442		—		906		2,908		—		—		—		—		(2,908	)		—			—			(2,908	)
Foreign currency translation adjustment		—		—		—		—		—		—		—		—		—		—		—		—		—		—			—			(62	)		(62	)
Net loss		—		—		—		—		—		—		—		—		—		—		—		—		—		—			(6,259	)		—			(6,259	)
Balance at June 30, 2024	****	71,428,571	$	849	****	239,156,361	$	27,869	****	270,636,854	$	78,715	****	127,875,914	$	45,549	$	152,982	****	326,079,495	$	18,967	****	321,469,306	$	10	$	8,206	****	$	(171,905	)	$	(1,853	)	$	(146,575	)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements

F-4

INMAGENE BIOPHARMACEUTICALS

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(Inthousands)

	Six Months Ended June 30,
	2025			2024
Cash flows from operating activities:
Net loss	$	(13,622	)	$	(28,573	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		4			1,045
Non-cash interest expense		393			—
Stock-based compensation expense		57			—
Amortization of right of use-assets		158			237
Non-cash research and development expense for the ordinary<br>shares issuable pursuant to Hutchmed Agreement		—			13,965
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		(6,206	)		(271	)
Other non-current assets		(1	)		53
Accounts payable		961			660
Accrued expenses and other current liabilities		(14	)		(2,004	)
Deferred revenue		(650	)		—
Operating lease liabilities		(171	)		(250	)
Net cash used in operating activities		(19,131	)		(15,138	)
Cash flows from investing activities:
Maturities and sales of short-term investments		—			10,151
Net cash provided by investing activities		—			10,151
Cash flows from financing activities:
Proceeds from exercise of share options		45			—
Proceeds from term loan		15,000			—
Payment of deferred offering costs		(2,001	)		—
Net cash provided by financing activities		13,044			—
Effects of exchange rates on cash and cash equivalents		(10	)		4
Net decrease in cash and cash equivalents		(6,097	)		(4,983	)
Cash and cash equivalents, beginning of year		12,118			15,321
Cash and cash equivalents, end of year	$	6,021		$	10,338
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net	$	14		$	—
Supplemental disclosure of non-cash investing andfinancing information:
Accretion of redeemable convertible preferred shares	$	6,200		$	5,759
Deferred offering costs in accounts payable	$	285		$	—
Deferred offering costs in accrued expenses and other current liabilities	$	2,258		$	—

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements

F-5

INMAGENE BIOPHARMACEUTICALS

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1. Organization

Description of Business

Inmagene Biopharmaceuticals (collectively, with its consolidated subsidiaries, the “Company”) is a clinical stage biopharmaceutical company focused on developing innovative and differentiated therapies for immunological and inflammatory diseases. The Company’s lead asset IMG-007, a non-depleting anti-OX40 monoclonal antibody, is in two global Phase 2a clinical trials in atopic dermatitis and alopecia areata. The Company was incorporated in the Cayman Islands in 2019 and is headquartered in San Diego, California.

Liquidity and Going Concern

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

The Company has incurred recurring losses and negative cash flows from operations since its inception. For the three and six months ended June 30, 2025, the Company incurred a net loss of $7.6 million and $13.7 million, respectively. For the six months ended June 30, 2025 the Company has used $19.1 million of cash in operating activities. As of June 30, 2025, the Company had an accumulated deficit of $197.5 million and cash and cash equivalents of $6.0 million.

Since inception, the Company has devoted substantially all of its resources to advancing the development of its portfolio of programs, organizing and staffing the Company, business planning, raising capital, and providing general and administrative support for these operations. Current and future programs will require significant research and development efforts, including preclinical and clinical trials, and regulatory approvals for commercialization. These efforts require significant amounts of additional capital, adequate personnel, and infrastructure. Even if the Company’s development efforts are successful, it is uncertain when, if ever, the Company will realize significant revenue from product sales. If the Company obtains regulatory approval for its product candidate or any future product candidates and starts to generate revenue, it expects to incur significant expenses related to developing its internal commercialization capability to support product sales, marketing, and distribution.

As a result, the Company will need substantial additional funding to support its operating activities as it advances its potential product candidate or any future product candidates through development, seeks regulatory approval and prepares for and, if its product candidate or any future product candidates are approved, proceeds to commercialization. Until such time as the Company can generate significant revenue from product sales, if ever, the Company expects to finance its operating activities through a combination of equity offerings, government or private party grants, debt financings and license and collaboration agreements. Adequate funding may not be available to the Company on acceptable terms, or at all. Management expects that existing cash and cash equivalents are not sufficient to fund its current operating plan for at least the next 12 months from the date these condensed consolidated financial statements are available to be issued.

If the Company is unable to obtain additional funding, the Company will assess its capital resources and may be required to delay, reduce the scope of, or eliminate some or all of its planned operations, which may have a material adverse effect on the Company’s business, financial condition, results of operations, and ability to operate as a going concern. The financial statements do not include any adjustments that may result if the Company is not able to continue as a going concern.

On December 23, 2024, Ikena Oncology, Inc. (“Ikena”), and the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Insight Merger Sub I, a wholly owned subsidiary of Ikena merged with and into the Company, with the Company continuing as a wholly owned subsidiary of Ikena and the surviving corporation of the merger (the “First Merger”). Immediately following the effective time of the First Merger (the “first effective time”) and as part of the same overall transaction, the Company merged with and into Insight Merger Sub II, a wholly-owned subsidiary of Ikena (“Merger Sub II”) (the “Second Merger” and, together with the First Merger, the “Merger”), with Merger Sub II being the surviving entity of the Second Merger. In connection with the Merger, Merger Sub II changed its corporate name to “Imagene Biopharmaceuticals” and Ikena changed its name to “ImageneBio, Inc.” Ikena, following the Merger, is referred to herein as the “Combined Company.” On July 25, 2025, the Merger between Ikena and Inmagene was completed and Ikena changed its name to ImageneBio, Inc.

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Concurrent with the execution of the Merger Agreement, Ikena entered into subscription agreements (the “Subscription Agreements”) with certain investors to which Ikena agreed to issue and sell to such investors shares of Ikena’s common stock for gross proceeds of $75.0 million (the “Ikena concurrent financing”), which immediately followed the closing of the Second Merger. Ikena immediately contributed the proceeds from the Ikena concurrent financing to Merger Sub II (which the Company was merged into) as a capital contribution to fund the development of IMG-007 and for working capital and general corporate purposes.

Concurrent with the execution of the Merger Agreement, the Company and Ikena entered into a Loan and Security Agreement (the “Loan Agreement”), pursuant to which Ikena has agreed to loan the Company up to $22.5 million in term loans of at least $7.5 million (collectively, the “Term Loan Advances”), with the first Term Loan Advance occurring within three days of the execution of the Loan Agreement. The Term Loan Advances shall bear interest, on the outstanding daily balance thereof, at a rate of 6.0% per annum, and may be prepaid at any time without a premium or a penalty. The Term Loan Advances are secured by all assets held or owned by Inmagene Biopharmaceuticals in respect of the anti-OX40 monoclonal antibody asset, IMG-007. Upon consummation of the Merger, all obligations (as defined in the Loan Agreement) were automatically forgiven, and the Loan Agreement was terminated. The Term Loan Advances, including interest accrued therewith, was added to Ikena’s net cash for purposes of the Merger Agreement, including the calculation of the Exchange Ratio (as defined in the Merger Agreement) and the closing conditions.

Immediately prior to the first effective time, Ikena, the Company and the designated rights agent entered into a Contingent Value Rights Agreement (the “Inmagene CVR Agreement”), pursuant to which Company shareholders of record as of the close of business on the last business day prior to the day on which the first effective time occurred received one contingent value right (each, an “Inmagene CVR”) for each outstanding Company share held by such shareholder on such date. Pursuant to the Inmagene CVR Agreement, each Inmagene CVR holder will be entitled to certain rights to receive (i) 100% of the net proceeds, if any, received by Ikena as a result of contingent payments (“Inmagene CVR Payments”) made to Ikena, such as milestone, royalty or earnout payments, received under any disposition agreements related to the programs and projects controlled by the Company any time prior to the closing date of the Merger (other than its anti-OX40 monoclonal antibody asset, IMG-007), as may be further developed by or on behalf of Ikena after the closing of the Merger (the “Inmagene CVR Asset”), which is entered into prior to the closing of the Merger and (ii) 90% of the net proceeds received by Ikena as a result of Inmagene CVR Payments received under any disposition agreements related to the Inmagene CVR Assets entered into after the closing date of the Merger and prior to the first anniversary of the closing of the Merger. Such proceeds are subject to certain permitted deductions, including for applicable tax payments, certain expenses incurred by Ikena or its affiliates, and losses incurred or reasonably expected to be incurred by Ikena or its affiliates due to a third-party proceeding in connection with a disposition.

Based upon Management’s expectation of continuing operating losses for the foreseeable future, the Company has concluded there is substantial doubt about its ability to continue as a going concern as of June 30, 2025.

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and reflect the operations of the Company and its fully owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

These interim financial statements do not include all the information and footnotes required by U.S. GAAP for annual financial statements and should be read in conjunction with the audited financial statements for the year ended December 31, 2024, which are included elsewhere in Ikena’s definitive proxy statement/prospectus filed on Form S-4 with the U.S. Securities and Exchange Commission (the “SEC”), most recently amended on June 9, 2025 and declared effective on June 11, 2025 (“Ikena’s definitive proxy statement/prospectus”). In the opinion of the Company, the accompanying unaudited condensed financial statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of its financial position as of June 30, 2025, and its results of operations for the three and six months ended June 30, 2025 and 2024, and cash flows for the six months ended June 30, 2025 and 2024. The condensed consolidated balance sheet at December 31, 2024, was derived from audited annual financial statements but does not contain all of the footnote disclosures from the annual financial statements.

There have been no material changes to the Company’s significant accounting policies as described in the Company’s audited consolidated annual financial statements for the year ended December 31, 2024 are included in the Ikena’s definitive proxy statement/prospectus.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates and assumptions reflected in these condensed consolidated financial statements include, but are not limited to, accrued research and development expenses, share-based compensation, the fair value of ordinary and redeemable convertible preferred shares, and the amount and timing of revenue recognition. The Company bases its estimates on historical experience, known trends and other factors that it believes to be reasonable under the circumstances. On an ongoing basis, management evaluates its estimates as there are changes in facts, circumstances, and experience. Changes in estimates are recorded in the period in which they become known. Actual results may differ from those estimates or assumptions.

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Net Loss Per Share

The Company applies the two-class method to compute basic and diluted net loss per share attributable to ordinary shareholders when it has issued shares that meet the definition of participating securities. The two-class method determines net loss per share for each class of common and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires loss available to ordinary shareholders for the period to be allocated between ordinary shares and participating securities based upon their respective rights to share in the earnings as if all loss for the period had been distributed. The Company’s redeemable convertible preferred shares participate in any dividends declared by the Company and are therefore considered to be participating securities. The participating securities are not required to participate in the losses of the Company, and therefore during periods of loss there is no allocation required under the two-class method.

The Company has two classes of ordinary shares outstanding—ordinary shares and Series A convertible preferred shares. Basic net loss per share attributable to ordinary shareholders is computed by allocating the undistributed earnings for each period to each class on a proportionate basis. Net loss per share is computed by dividing the net loss attributable to each class of ordinary share by the weighted average number of ordinary shares of each class outstanding for the period. The two-class method is expected to yield the same basic loss per share for ordinary share and Series A convertible preferred shares as there are no differences in dividend rights between the two classes. Diluted net loss attributable to ordinary shareholders is computed by adjusting net loss per share attributable to ordinary shareholders based on the potential impact of dilutive securities. Diluted net loss per share attributable to ordinary shareholders is computed by dividing the diluted net loss attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding for the period, including potential dilutive ordinary shares. For purpose of this calculation, outstanding options to purchase ordinary shares and shares of convertible preferred shares as converted to ordinary shares are considered potential dilutive ordinary shares. The Company generated a net loss in all periods presented, and therefore the basic and diluted net loss per share attributable to ordinary shareholders is the same as the inclusion of the potentially dilutive securities would be anti-dilutive. The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares outstanding, as the effect of including these securities would have been anti-dilutive:

	As of June 30,
	2025		2024
Share options to purchase ordinary shares		158,575,852		141,325,852
Redeemable convertible preferred stock (as converted to ordinary shares)		709,097,700		709,097,700
Contingently issuable ordinary shares pursuant to Hutchmed share subscription agreement		—		140,636,592
Total potentially dilutive securities		867,673,552		991,060,144

Recently Adopted Accounting Standards

The Company implemented all new accounting pronouncements that are in effect and may have an impact on the condensed consolidated financial statements. Unless otherwise discussed, the Company believes the impact of any recently issued and not yet effective pronouncements will not have a material impact on the condensed consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic740)—Improvements to Income Tax Disclosures (“ASU 2023-09”), which is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU 2023-09 provide for enhanced income tax information primarily through changes to the income taxes paid information. ASU 2023-09 is effective for the Company for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently assessing the impact of this standard on its consolidated financial statements and related disclosures but does not expect it to be material.

In November 2024, the FASB issued ASU No. 2024-03 Income Statement—ReportingComprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40) and provided a clarifying update in January 2025. The amendments increase disclosure requirements primarily through enhanced disclosures about types of expenses (including purchases of inventory, employee compensation, depreciation, and amortization) in commonly presented expense captions. The ASU is effective for fiscal years beginning after December 15, 2026, and interim periods beginning after December 15, 2027, and is required to be applied prospectively with the option for retrospective application. Early adoption is permitted. The Company is currently evaluating the impact that this guidance will have on the disclosures on its consolidated financial statements.

On July 30, 2025 the FASB issued ASU No. 2025-05*,* Measurement of Credit Losses for Accounts Receivable and Contract Assets, which provides guidance for estimating credit losses under the current expected credit losses (CECL) model for current accounts receivable and current contract assets arising from transactions accounted for under ASC 606. The guidance is effective for periods beginning after December 15, 2025 and is required to be adopted prospectively. Early adoption is permitted. The Company is currently evaluating the impact that this guidance will have on the disclosures on its consolidated financial statements.

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3. Balance Sheet Components

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets as of June 30, 2025 and December 31, 2024, consisted of the following (in thousands):

	June 30, 2025		December 31, 2024
Prepaid foreign consumption tax	$	—	$	81
Prepaid research and development costs		6,362		57
Other receivables		99		83
Prepaid other		100		129
Prepaid expenses and other current assets	$	6,561	$	350

Other Non-Current Assets

Other non-current assets as of June 30, 2025 and December 31, 2024, consisted of the following (in thousands):

	June 30, 2025		December 31, 2024
Investment in Celexor	$	942	$	942
Non-current deposits		69		69
Property and equipment, net		3		8
Other non-current assets	$	1,014	$	1,019

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities as of June 30, 2025 and December 31, 2024, consisted of the following (in thousands):

	****	June 30, 2025	****	December 31, 2024
Accrued research and development costs	$	1,469	$	654
Accrued compensation		480		931
Accrued professional fees		88		485
Accrued financing cost		2,258		1,294
Accrued other		117		96
Accrued expenses and other current liabilities	$	4,412	$	3,460

4. Term Loan

In connection with the execution of the Merger Agreement, the Company received $7.5 million of the initial Term Loan Advance in December 2024. The Term Loan Advances bear interest, on the outstanding daily balance thereof, at a rate of 6.0% per annum, and may be prepaid at any time without premium or penalty. The Company received the second Term Loan Advance of $7.5 million in April 2025 and the Company received the third $7.5 million Term Loan Advance in May 2025. Under the Loan Agreement, the Company cannot draw any additional increments as of June 30, 2025. The Company recorded the Term Loan Advances as a current liability as the initial Term Loan Advance will mature and become due and payable six months from the termination of the Merger Agreement. Upon consummation of the Merger all unpaid Obligations (as defined in the Loan Agreement), including the loan principal and any accrued but unpaid interest, will be automatically forgiven. The Company did not incur any fees or other issuance costs to establish this loan. As of June 30, 2025, the outstanding principal balance from the initial Term Loan Advance of $22.5 million and the corresponding accrued interest of $0.4 million were included within Term loan on the condensed consolidated balance sheet. The Term Loan was forgiven upon the consummation of the Merger on July 25, 2025.

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5. Convertible Preferred Shares and Redeemable Convertible Preferred Shares

Convertible preferred shares and redeemable convertible preferred shares consisted of the following (in thousands, except share and per share amounts):

	As of June 30, 2025
	Shares Authorized		Shares Issuedand Outstanding		Issuanceprice pershare		CarryingValue		LiquidationPreference
Convertible preferred shares
Series A		326,079,495		326,079,495	$	0.0583	$	18,967	$	—
Total convertible preferred shares		326,079,495		326,079,495			$	18,967	$	—
Redeemable convertible preferred shares
Series Seed		71,428,571		71,428,571	$	0.0070	$	994	$	1,000
Series B		239,156,361		239,156,361		0.0876		30,088		30,982
Series C-1		290,202,451		270,636,854		0.2240		84,780		86,513
Series C-2		351,591,430		127,875,914		0.2844		49,377		50,929
Total redeemable convertible preferred shares		952,378,813		709,097,700			$	165,239	$	169,424
	As of December 31, 2024
---	---	---	---	---	---	---	---	---	---	---
	SharesAuthorized		Shares Issuedand Outstanding		Issuanceprice pershare		CarryingValue		LiquidationPreference
Convertible preferred shares
Series A		326,079,495		326,079,495	$	0.0583	$	18,967	$	—
Total convertible preferred shares		326,079,495		326,079,495			$	18,967	$	—
Redeemable convertible preferred shares
Series Seed		71,428,571		71,428,571	$	0.0070	$	919	$	1,000
Series B		239,156,361		239,156,361		0.0876		28,966		29,943
Series C-1		290,202,451		270,636,854		0.2240		81,714		83,507
Series C-2		351,591,430		127,875,914		0.2844		47,440		49,125
Total redeemable convertible preferred shares		952,378,813		709,097,700			$	159,039	$	163,575

Series Seed Preferred Shares

The Company previously issued 71,428,571 shares of Series Seed redeemable convertible preferred shares (the “Series Seed”) for total gross proceeds of $0.5 million less Series Seed issuance fees of $0.1 million.

Series A Preferred Shares

The Company previously issued a total of 326,079,495 shares of Series A convertible preferred shares (the “Series A”) for total gross proceeds of $19.0 million less immaterial issuance fees.

Series B Preferred Shares

The Company previously issued a total of 239,156,361 shares of Series B redeemable convertible preferred shares (the “Series B”) for total gross proceeds of $21.0 million less Series B issuance fees of $0.1 million.

Series C Preferred Shares

The Company previously issued a total of 270,636,854 shares of Series C-1 redeemable convertible preferred shares (“Series C-1”) for total gross proceeds of $60.6 million less Series C-1 issuance fees of $1.1 million.

In conjunction with the achievement of certain milestones, the Company issued a total of 127,875,914 shares of Series C-2 redeemable convertible preferred shares (“Series C-2”) for total gross proceeds of $36.4 million less Series C-2 issuance fees of $0.6 million.

Collectively, the Series C-1 and Series C-2 shall be referred to as the Series C Preferred Shares.

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The key terms of the Series Seed, Series A, Series B and Series C Preferred Shares (collectively, the “Preferred Shares”) are as follows:

Conversion rights

Each share of Preferred Shares shall be convertible, at the option of the holder, at any time, into such number of ordinary shares as is determined by dividing the original issue price by the applicable conversion price in effect at the time of conversion. The conversion price shall initially be equal to the applicable original issue price of each series of Preferred Shares. The conversion prices are subject to adjustments for share splits, combinations, ordinary share dividends, distributions, capital reorganization and certain dilutive equity issuances. As of June 30, 2025 and 2024, each series of Preferred Shares were convertible into ordinary shares on a one-for-one basis.

Each share of Preferred Shares shall automatically be converted, based on the then -effective conversion price applicable to the relevant series of Preferred Shares upon the earlier of (i) the closing of an IPO that resulted in an offering of at least $600 million and aggregate gross proceeds of at least $60 million, or (ii) the date specified by written consent of the holders of sixty-six percent (66%) of such class of Preferred Shares.

Voting rights

The holders of each series of Preferred Shares are entitled to vote on all matters and shall have the number of votes equal to the number of ordinary shares of into which the Preferred Shares are convertible.

The authorized number of directors on the Board shall be up to five directors including one director appointed by the Series C lead investor, one director appointed by the Series Seed holders and one director appointed by the Series B lead investor.

Dividend rights

There are no specific dividends related to each series of Preferred Shares. If the Company declares a dividend on shares of more than one class or series of capital shares, the dividend payable to the holders of Preferred Shares will be in proportion to the number of ordinary shares issuable to each holder had all Preferred Shares been converted on a fully-diluted basis. As of June 30, 2025, no dividends have been declared or paid on the Company’s Preferred Shares.

Redemption rights

The Series A preferred shareholders are not entitled to any redemption rights.

The Series Seed preferred shares are redeemable at the holders’ option at any time on or after the earlier of: (i) the seventh (7^th^) anniversary of August 30, 2020, or (ii) any material breach of the agreements entered into in connection with the Series Seed Purchase Agreement. The redemption price of the Series Seed preferred shares are equal to (a) 200% of the Series Seed original issue price, plus (b) an amount equal to a rate of return of 10% per annum of the original issue price of the Series Seed preferred shares calculated from the original issue date through the redemption date, plus (c) all declared or accrued but unpaid dividends, proportionally adjusted for any share splits, share dividends, combinations, recapitalizations, or similar transactions.

The Series B and Series C preferred shares are redeemable at the holders’ option at any time on or after the earlier of: (i) the seventh (7^th^) anniversary of August 30, 2020, or (ii) any material breach of the agreements entered into in connection with the Series B Purchase Agreement or the Series C Purchase Agreement, respectively. The redemption price of Series B and Series C preferred shares are equal to (a) 100% of the respective Series B or Series C preferred shares original issue price, plus (b) an amount equal to a rate of return of 10% per annum of the original issue price of the Series B or Series C preferred shares calculated from the original issue date through the redemption date of the respective Series B or Series C preferred shares, plus (c) all declared or accrued but unpaid dividends, proportionally adjusted for any share splits, share dividends, combinations, recapitalizations, or similar transactions.

Liquidation preference

The Series A preferred shareholders are not entitled to any liquidation preference.

In the event of any voluntary or involuntary liquidation, dissolution, winding up of the Company, or Trade Sale defined as (a) a merger, consolidation, or other corporate transaction which results in the Company’s shareholders before the transaction owning less than 50% of the voting power after the transaction or which results in greater than 50% of the voting power being transferred or (b) the sale, transfer, or lease of substantially all of the assets or intellectual property of the Company, first, the holders of shares of Series C preferred shares then outstanding shall be entitled to an amount per share equal to the sum of (i) the original issue price of the preferred shares, (ii) an amount equal to a rate of return of 10% per annum of the original issue price of the preferred shares, and (iii) all accrued but unpaid dividends. Second, the holders of shares of Series B preferred shares then outstanding shall be entitled to an amount per share equal to the sum of (i) the original issue price of the preferred shares, (ii) an amount equal to a rate of return of 10% per annum of the original issue price of the preferred shares, and (iii) all accrued

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but unpaid dividends. If the amount that a holder of Series B preferred shares would receive would be greater than 3.5 times the Series B original issue price of the preferred shares, then the holders of Series B preferred shares would only be entitled to the remaining assets and funds of the Company available for distribution, distributed ratably on an as- converted basis, after paying in full the aggregate Series C shareholders and the aggregate Series Seed shareholders. Third, the shares of Series Seed preferred shares then outstanding shall be entitled to an amount per share equal to 200% of the original issue price of the Series Seed preferred shares, plus any dividends declared but unpaid. Fourth, after paying in full the aggregate Series C preferred shareholders, the aggregate Series B preferred shareholders, and the aggregate Series Seed preferred shareholders, the remaining assets and funds of the Company available for distribution shall be distributed ratably among all investors according to the relative number of ordinary shares held by such investor, on an as-converted basis.

If the assets of the Company available for distribution are insufficient to pay the holders the full amount they are entitled, the holders of Preferred Shares shall share ratably in proportion to the respective amounts which would otherwise be payable in respect of the shares held by them upon such distribution if all amounts payable were paid in full.

6. Ordinary Shares

The Company’s certificate of incorporation, as amended and restated, authorizes the Company to issue 18,721,541,692 ordinary shares, $0.00005 par value. As of June 30, 2025, 462,684,023 ordinary shares were issued and outstanding. Each ordinary share entitles the holder to one vote, together with the holders of Preferred Shares on an as-converted basis, on all matters submitted to the shareholders for a vote. The holders of ordinary shares are entitled to receive dividends, if any, as declared by the Company’s Board of Directors, in proportion to the number of ordinary shares issuable to each holder of Preferred Shares.

As of June 30, 2025, the Company had reserved ordinary shares for future issuances as follows:

	2025
Series Seed Preferred Shares, as converted to ordinary		71,428,571
Series A Preferred Shares, as converted to ordinary		326,079,495
Series B Preferred Shares, as converted to ordinary		239,156,361
Series C-1 Preferred Shares, as converted to<br>ordinary		270,636,854
Series C-2 Preferred Shares, as converted to<br>ordinary		127,875,914
Outstanding ordinary share options		158,575,852
Ordinary shares available for grant under the Plan		208,193,482
Total		1,401,946,529

7. Share-Based Compensation

In 2019, the Board of Directors approved the adoption of the 2019 Shares Incentive Plan (the “Plan”). As of June 30, 2025, 488,816,765 ordinary shares had been authorized for issuance under the Plan, of which 122,047,431 ordinary shares have been issued. The Plan provides for the grant of incentive and non-qualified share options, restricted share units, and restricted share awards to employees, officers, directors, consultants and advisors of the Company. As of June 30, 2025, there were 208,193,482 shares available for grant under the Plan.

Summary of share options

The Company granted share options where vesting was subject to service and performance-based criteria. The service condition is typically a four-year service vesting period, and the exercise of the share options is contingent upon consummation of certain transactions of the Company such as a change in control, corporate transaction, or Initial Public Offering. A Corporate Transaction includes specific events in which the Company undergoes a merger or reverse merger, the sale of substantially all

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assets, a liquidation or dissolution, or an acquisition, resulting in either a change of control or the loss of majority voting power by its shareholders. The Company also granted certain share options with vesting that is determined based on the achievement of certain corporate and individual milestones. The recognition of expense for these share options is further dependent upon the achievement of certain milestones. In addition, the Plan allows for the acceleration of vesting of certain awards to the extent approved by the administrator of the Plan. The Company’s share option activity for the six months ended June 30, 2025 is summarized as follows:

	Shares			Weighted<br>Average<br>Exercise Price<br>(per share)		WeightedAverage<br>Remaining<br>Contractual<br>Life (in Years)		Aggregate<br>Intrinsic<br>Value<br>(in thousands)
Outstanding as of December 31, 2024		159,003,977		$	0.02		6.46	$	13,288
Granted		150,000			0.01
Exercised		(578,125	)		0.05
Cancelled/forfeited		—			—
Outstanding as of June, 2025		158,575,852		$	0.02		6.42	$	13,288
Exercisable as of June 30, 2025		—			—		—	$	—
Vested and expected to vest as of June 30, 2025		158,575,852		$	0.02		6.42	$	13,288

The aggregate intrinsic value of share options is calculated as the difference between the exercise price of the share options and the estimated fair value of the ordinary shares for options that had exercise prices lower than the fair value of the Company’s ordinary shares at the end of the period.

The weighted average grant-date fair value of share options granted during the six months ended June 30, 2025 was $0.09 per share.

Share-based compensation expense for share options

There was no share-based compensation expense during the three months ended June 30, 2025 and 2024. Share-based compensation expense for the six months ended June 30, 2025 and 2024 was recorded as follows (in thousands):

	Six months ended June 30,
	2025		2024
Research and development	$	57	$	0
General and administrative		—		—
Total	$	57	$	0

In the six months ended June 30, 2025, the Plan Administrator approved the vesting and exercisability of certain stock options under the Plan resulting in the recognition of $0.1 million of share-based compensation included in research and development expense within the condensed consolidated statement of operations and comprehensive loss. As of June 30, 2025 and 2024, the remaining outstanding options contained performance conditions related to the exercisability and vesting of the share options granted, which were not probable of achievement based on the relevant facts and circumstances. Therefore, the Company recorded no share-based compensation expense for the remaining outstanding awards granted under the Plan. As of June 30, 2025, unrecognized share-based compensation expense for share option awards that are not exercisable until a change in control, IPO or Corporate Transaction was $15.4 million.

For the six months ended June 30, 2024, the Company recorded $14.0 million in research and development expense related to the issuance of ordinary shares on the condensed consolidated statement of operations and comprehensive loss, respectively. See Note 9, “Collaborative Arrangements and Licensing Agreements” for detail on the issuance of ordinary shares related to the Hutchmed Agreement.

Summary of restrictedshare units (“RSU”)

The following table summarizes RSU activity for the six months ended June 30, 2025:

	Number ofShares		Weighted AverageGrant DateFair Value (pershare)
Unvested, beginning of period		—	$	—
Granted		10,300,000		0.10
Vested		—		—
Forfeited		—		—
Unvested, end of period		10,300,000	$	0.10

F-13

On April 8, 2025, the Board of Directors granted restricted share units to employees. Prior to April 8, 2025, the Company had not granted any RSUs to employees. The RSUs contain service-based and performance-based vesting conditions. The performance-based vesting condition is the successful closing of the Merger. The service-based requirement shall be satisfied subject to the employee remaining in continuous service through the closing of the Merger. The holders of RSUs are not entitled to dividends or dividend equivalents. The fair value of the RSUs granted is based on the estimated fair value of the underlying shares at the date of grant.

As of June 30, 2025, unrecognized share-based compensation expense for RSUs that do not vest until the completion of the contemplated Merger and continuous service through the Merger was $1.0 million.

8. Commitments and Contingencies

Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. The Company believes there is no litigation pending or loss contingencies that could have, either individually or in the aggregate, a material impact on the Company’s condensed consolidated financial statements.

The Company enters into contracts in the normal course of business with third-party contract organizations for clinical trials, preclinical studies, manufacturing and other services and products for operating purposes. These contracts generally provide for termination following a certain period after notice and therefore the Company believes that its non-cancelable obligations under these agreements are not material.

9.Collaborative Arrangements and Licensing Agreements

Collaborative Arrangements

IMG-013 and IMG-008 Agreements

On July 12, 2024, the Company entered into separate Exclusive License and Collaboration Agreements to license Inmagene’s anti-IL-7Ra antibody (“IMG-013 Agreement”) and anti-IL-36R antibody (“IMG-008 Agreement”) to a third party. The Company determined that the IMG-008 Agreement and IMG-013 Agreement should be accounted for as separate contracts with a customer in accordance with ASC 606.

IMG-013 Agreement

Under the IMG-013 Agreement, the Company agreed to grant to a third party an exclusive royalty-bearing worldwide license to exploit patents, patent applications, and Inmagene know-how which would address immune disorders where Inmagene’s anti-IL-7Ra antibody (IMG-013) is involved. The license term commenced upon receipt of the upfront payment and will continue until such time as there are no remaining payment obligations due to the Company.

Under the IMG-013 Agreement as amended by the settlement agreement and mutual general release pertaining to the IMG-008 Agreement, the Company was entitled to receive a $3.5 million non-refundable upfront cash payment, which the Company received in the third quarter of 2024. The Company is eligible to receive up to $66.0 million in payments under the IMG-013 Agreement based on development and regulatory milestones for the first indication and may be eligible to receive additional payments for subsequent indications, and up to $285.0 million in payments based on sales-based milestones. The Company may also receive additional payments based on mid-single-digit sales-based royalties. None of the payments under the IMG-013 Agreement are refundable.

The Company concluded that the promises included the license of intellectual property and technology transfer and these promises should be combined into a single performance obligation.

In order to determine the transaction price, the Company evaluated all the payments to be received during the duration of the contract. Fixed consideration exists in the form of the $3.5 million upfront payment. Development, regulatory, and sales-based milestones and royalties were considered variable consideration. The potential milestone payments were excluded from the transaction price at the outset of the arrangement because (i) all development and regulatory milestone payments did not meet the criteria for inclusion using the most-likely-amount method due to the uncertainties of research and development and (ii) the Company recognizes sales-based royalties and milestone payments as revenue at the later of the occurrence of the related sales or the date upon which the performance obligation has been satisfied under the sales-based royalty exception as the license is the predominant item to which the sales-based royalties and milestones relate. The Company will re-evaluate the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as uncertain events are resolved or other changes in circumstances occur. The Company determined that the initial transaction price consists of the upfront payment which is allocated to the one performance obligation. The transaction price allocated to the one performance obligation was recognized upon grant of license and transfer of technology in the third quarter of 2024.

F-14

IMG-008 Agreement

Under the IMG-008 Agreement, the Company agreed to grant to a third party an exclusive royalty-bearing worldwide license to exploit patents, patent applications, and Inmagene know-how which would address immune disorders where Inmagene’s anti-IL-36R antibody (IMG-008) is involved. The license term would have commenced upon receipt of the upfront payment and would continue until such time as there are no remaining payment obligations due to the Company.

Under the IMG-008 Agreement, the Company was initially entitled to receive a $6.5 million non-refundable upfront cash payment from IMG-008 no later than September 9, 2024. The Company was also eligible to receive up to $86.5 million in payments under the IMG-008 Agreement based on development and regulatory milestones for the first indication and may be eligible to receive additional payments for subsequent indications, and up to $285.0 million in payments based on sales-based milestones. The Company was also entitled to receive additional payments based on mid-single-digit sales-based royalties.

The Company and the third party entered into an amendment of the IMG-008 Agreement in the third quarter of 2024, whereby the Company extended the payment period for the upfront payment in exchange for a non-refundable $0.7 million deposit. The $0.7 million deposit was received by the Company during the three months ended September 30, 2024 and was reflected as deferred revenue on the consolidated balance sheet as of December 31, 2024.

During the first quarter of 2025, the Company and the third party entered into a settlement agreement and mutual general release pertaining to the IMG-008 Agreement, whereby the Company agreed to dismiss all claims against the third party related to the IMG-008 Agreement in exchange for (1) re-affirmation of full release by the third party of the $0.7 million of funds previously deposited by the third party; (2) payment of a one-time settlement amount of $0.1 million by the third party to the Company; and (3) amendment of the above noted IMG-013 Agreement to increase the development and regulatory milestones from $63.0 million to $66.0 million. Except as so amended, the IMG-013 Agreement remains in full force and effect in accordance with its terms, whereas the IMG-008 Agreement is effectively terminated. For the three and six months ended June 30, 2025, the Company recognized $0 and $0.8 million of license revenue in the condensed consolidated statement of operations and comprehensive loss, respectively.

Celexor

On September 28, 2023, the Company entered into an Exclusive License and Collaboration Agreement (the “Celexor Agreement”) with Celexor Bio, Inc. (“Celexor”). The Company granted Celexor an exclusive royalty-bearing license to develop, manufacture, and commercialize any and all products and associated products utilizing Inmagene’s IMG-018, a monoclonal antibody targeting immunoglobulin-like transcript 7. The license term commenced upon the execution of the Celexor Agreement and will continue until such time as there are no remaining payment obligations due to the Company.

Under the Celexor Agreement, the Company received an upfront payment of $7.0 million and 1,223,300 shares of Celexor’s Series Seed-2 Preferred Shares valued at $0.9 million from Celexor. The Company is eligible to receive up to $112.0 million in payments based on development and regulatory milestones, and up to $175.0 million in payments based on sales-based milestones. The Company may also receive additional payments based on mid-single-digit sales-based royalties. None of the payments under the Celexor Agreement are refundable. The Company determined the Celexor Agreement should be accounted for as a contract with a customer under ASC 606.

The Company concluded that the promises included the license of intellectual property and technology transfer, and these promises should be combined into a single performance obligation.

In order to determine the transaction price, the Company evaluated all of the payments to be received over the duration of the contract. Fixed consideration exists in the form of the upfront payment and Celexor Series Seed-2 Preferred Shares received. Development, regulatory, and sales-based milestones and royalties were considered variable consideration. The potential milestone payments were excluded from the transaction price at the outset of the arrangement because (i) all development and regulatory milestone payments did not meet the criteria for inclusion using the most-likely-amount method due to the uncertainties of research and development and (ii) the Company recognizes sales-based royalties and milestone payments as revenue at the later of the occurrence of the related sales or the date upon which the performance obligation has been satisfied under the sales-based royalty exception as the license is the predominant item to which the sales-based royalties and milestones relate. The Company will re-evaluate the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as uncertain events are resolved or other changes in circumstances occur. The Company determined that the initial transaction price consists of the upfront payment of $7.0 million and the receipt of Celexor’s Series Seed-2 Preferred Shares which were valued at $0.9 million, which is allocated to the single performance obligation. The transaction price allocated to the single performance obligation was recognized upon grant of license and transfer of technology which occurred in the fourth quarter of 2023.

As of June 30, 2025 and December 31, 2024, the Celexor shares are recorded within other non-current assets in the condensed consolidated balance sheets.

F-15

Licensing Agreements

Hutchmed Limited

On January 5, 2021, the Company entered into a Collaboration, Option and License Agreement (the “Hutchmed Agreement”) with Hutchmed Limited (“Hutchmed”), formerly known as Hutchison MediPharma Limited. The Company entered into the Hutchmed Agreement as a strategic partnership to further develop four novel preclinical drug candidates discovered by Hutchmed for the potential treatment of multiple immunological diseases – OX40 (CD134) antagonistic monoclonal antibody (anti-OX40 mAB), BTK (Bruton tyrosine kinase) inhibiter (BTK HMPL-727), RIPK1 HMPL-662, and CSF-1R HMPL-958.

Under the terms of the Hutchmed Agreement, the Company received an exclusive, royalty-free, worldwide license to perform research and development and for use in regulatory filings, at the Company’s expense. Further, on a licensed product-by-licensed product basis, the Company received the option to obtain an exclusive, worldwide, royalty-bearing license to further develop, manufacture and commercialize, with Hutchmed retaining first right to co-commercialization in mainland China (each a “License Option”).

Upon exercise of each License Option, the Company will pay a $20.0 million fee per licensed compound, or, if exercise and payment is made within three years of execution of the Hutchmed Agreement, the Company may elect to pay the option exercise fee in ordinary shares pursuant to a share subscription agreement at a price to be agreed to by both parties. Following the Company’s decision to exercise the License Option, Hutchmed will be eligible to receive up to $92.5 million in development and regulatory milestones for each drug candidate that is licensed. Additionally, Hutchmed is eligible to receive up to $135.0 million in additional sales-based milestones and tiered sales-based royalties ranging from high-single-digit to low-tens percentages. None of the payments under the Hutchmed Agreement are refundable.

In April 2023, the Company entered into an amendment to the Hutchmed Agreement which terminated portions of the Hutchmed Agreement related to the RIPK1 HMPL-662 compound, and extended the Company’s deadline for License Option exercise by an additional year to allow time for additional research to be performed on two of the remaining targets.

On October 16, 2023, the Company exercised the License Option for (a) anti-OX40 mAB, and (b) the BTK (Bruton tyrosine kinase) inhibiter. The Company elected to pay Hutchmed the option exercise fee in the form of ordinary shares pursuant to the financial provisions of the Hutchmed Agreement. The License Option rights to CSF-1R HMPL-958 were not exercised and have expired under the terms of the Hutchmed Agreement.

In February 2024, the Company and Hutchmed entered into a share subscription agreement whereby the Company agreed to issue 140,636,592 of ordinary shares for satisfaction of the option exercise fees for the two licensed compounds. For the three months ended March 31, 2024, the Company recorded $14.0 million in research and development expenses on the consolidated statements of operations and comprehensive loss.

Affibody

On April 29, 2020, the Company entered into a License and Collaboration Agreement (the “Affibody Agreement”) with Affibody AB (“Affibody”). The Company entered into the Affibody Agreement as a strategic partnership to develop and commercialize Affibody’s ABY-035, a bispecific molecule targeting Interleukin-17A, for multiple auto-immune diseases.

Under the Affibody Agreement, the Company received an exclusive license to develop and commercialize any and all products and associated products utilizing ABY-035 in mainland China, Hong Kong, Taiwan, Macau, and South Korea (“Inmagene Territory”), a non-exclusive license to Affibody’s proprietary platform that is necessary or useful to develop and commercialize the licensed products in the Inmagene Territory and development activities in the Asia Pacific region, excluding Japan. Affibody will be responsible for the manufacturing and supply of ABY-035 for development and commercialization worldwide and is not precluded from additional collaboration and licensing agreements in territories not covered by the Affibody Agreement.

Under the terms of the Affibody Agreement, the Company paid a $10.0 million upfront payment and Affibody is eligible to receive up to $37.5 million in payments based on development and regulatory milestones and up to $178.0 million in payments based on sales-based milestones, plus tiered sales-based royalties ranging from high-single-digit to low-tens percentages in the Inmagene Territory.

Additionally, Inmagene will share the global development costs of select clinical trials and be eligible to receive from Affibody up to $36.0 million in payments relating to certain global development, regulatory and sales-based milestones and tiered low-single-digit sales-based royalties on net sales outside of the Inmagene Territory.

None of the payments under the Affibody Agreement are refundable.

F-16

On January 9, 2025, the Company entered into an agreement with Affibody to terminate the Affibody Agreement effective as of January 10, 2025. In accordance with the terms of the Affibody Agreement, all corresponding licenses or sublicenses were terminated, and the Company agreed to wind down any ongoing studies for any compounds subject to the Affibody Agreement.

10. Net Loss per Share

Basic and diluted net loss per share attributable to common stockholders for the three months ended June 30, was calculated as follows (in thousands, except share and per share amounts):

	Three Months Ended June 30,
	2025			2024
Numerator:
Net loss	$	(7,585	)	$	(6,259	)
Less: accretion of Preferred Stock	$	3,149		$	2,908
Net loss attributable to common stockholders - basic and diluted	$	(10,734	)	$	(9,167	)
Denominator:
Weighted-average common stock outstanding		1,411,649			980,803
Weighted-average Series A convertible preferred outstanding		994,869			994,869
Net loss per share attributable to common stockholders - basic and diluted	$	(4.46	)	$	(4.64	)
Net loss per share attributable to Series A stockholders - basic and diluted	$	(4.46	)	$	(4.64	)

Basic and diluted net loss per share attributable to common stockholders for the six months ended June 30, was calculated as follows (in thousands, except share and per share amounts):

	Six Months Ended June 30,
	2025			2024
Numerator:
Net loss	$	(13,662	)	$	(28,573	)
Less: accretion of preferred stock	$	6,200		$	5,759
Net loss attributable to common stockholders - basic and diluted	$	(19,862	)	$	(34,332	)
Denominator:
Weighted-average common stock outstanding		1,410,811			980,803
Weighted-average Series A convertible preferred outstanding		994,869			994,869
Net loss per share attributable to common stockholders - basic and diluted	$	(8.26	)	$	(17.38	)
Net loss per share attributable to Series A stockholders - basic and diluted	$	(8.26	)	$	(17.38	)

In accordance with ASC 260, Earnings Per Share, the Company recast its basic and diluted earnings per share computations for the effect of the exchange ratio of 0.0030510 on its outstanding common stock during the three and six months ended June 30, 2025 and 2024, resulting from the close of the Merger which occurred on July 25, 2025.

For the computation of basic net loss per share attributable to common stockholders, the amount of weighted-average common shares outstanding excludes all shares of unvested restricted share units as such shares are not considered outstanding for accounting purposes until vested.

The Company’s potentially dilutive securities have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted-average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded potentially dilutive securities from the computation of diluted net loss per share attributable to common stockholders for the period presented because including them would have had an anti-dilutive effect:

	As of June 30,
	2025		2024
Series B Convertible preferred stock (as converted to common stock)		239,156,361		239,156,361
Series C Convertible preferred stock (as converted to common stock)		398,512,768		398,512,768
Series Seed Convertible preferred stock (as converted to common stock)		71,428,571		71,428,571
Contingently issuable ordinary shares pursuant to Hutchmed share subscription agreement		—		140,636,592
Stock options to purchase common stock		158,575,852		141,325,852
Total	****	867,673,552	****	991,060,144

F-17

11. Segment Information

The Company operates and manages its business as a single operating and reportable segment for the purpose of assessing performance and making operating decisions. The Company’s chief executive officer, who is the CODM, reviews the Company’s financial information on an aggregated basis for purposes of evaluating financial performance and allocating resources. The CODM assesses operating performance as compared to planned activities for the operating segment and decides how to allocate resources based on net loss that also is reported on the consolidated statement of operations and comprehensive loss. The Company derives license revenue primarily in the United States from research and development collaborations and manages the business activities on a consolidated basis.

In addition, the CODM is regularly provided the following significant segment financial information to assist in segment performance evaluation, resource allocation, and decision-making (in thousands):

	For the three months ended<br><br><br>June 30,				For the six months endedJune 30,
	2025		2024		2025		2024
Research and Development
Clinical research and outside services	$	4,879	$	3,157	$	7,988	$	7,993
Compensation and related		774		1,117		1,648		2,305
Other research and development expenses(a)		—		203		—		203
Stock-based compensation expense		—		—		57		13,965
Total research and development expense	$	5,653	$	4,476	$	9,693		24,465
General and Administrative
Compensation and related	$	589	$	613		1,328		1,509
Consulting and professional services		645		268		2,301		922
Other general and administrative expenses(b)		471		1,029		831		1,926
Total general and administrative expense	$	1,705	$	1,909		4,460		4,357
(a)	Other research and development expenses include depreciation and amortization expense and a non-cash research and development expense for the ordinary shares issuable pursuant to the Hutchmed Agreement of $14.0 million for the six months ended June 30, 2024.
---	---
(b)	Other general and administrative expenses include depreciation and amortization expense, and certain<br>departmental expenses.
---	---

Property and equipment, net as of June 30, 2025, and December 31, 2024 is located in the United States.

12. Income Taxes

Income taxes for the three months ended June 30, 2025, and 2024 were recorded at the Company’s estimated annual effective income tax rate, subject to adjustments for discrete events, if they occur. The Company’s estimated annual effective tax rate for the six months ended June 30, 2025, and 2024 was 0% and 0%, respectively. The primary reconciling items between the federal statutory rate of 21.0% and the Company’s overall effective tax rate for these periods is due to net operating losses and the valuation allowance recorded against the full amount of the Company’s net deferred tax assets.

A valuation allowance is required when it is more likely than not that some portion or all of the Company’s deferred tax assets will not be realized. The realization of deferred tax assets depends on the generation of sufficient future taxable income during the period in which the Company’s related temporary differences become deductible.

Management believes that based on the earnings history of the Company, it is more likely than not that the benefits of these assets will not be realized, and therefore, a full valuation allowance has been recorded against the Company’s net deferred tax assets as of June 30, 2025, and December 31, 2024.

On July 4, 2025, the One Big Beautiful Bill Act (“OBBBA”) was enacted in the U.S. The OBBBA includes significant provisions, such as the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act, modifications to the international tax framework and the restoration of favorable tax treatment for certain business provisions, most notably Section 174 capitalization of domestic research and development costs. The legislation has multiple effective dates, with certain provisions effective in 2025 and others implemented through 2027. We are currently assessing its impact on our consolidated financial statements.

13. Subsequent Events

The Company evaluated subsequent events occurring subsequent to June 30, 2025 through August 12, 2025, the date the condensed consolidated financial statements were available for issuance.

F-18

The Merger

On July 25, 2025, Ikena completed its previously announced Merger with the Company in accordance with the terms of the Merger Agreement. Prior to the Merger, Ikena effected a 1-for-12 reverse stock split of its common stock (the “Reverse Stock Split”). Pursuant to the Plan of Merger for the First Merger, Merger Sub I was merged with and into the Company and the Company became a wholly owned subsidiary of Ikena. Pursuant to the Plan of Merger for the Second Merger, the Company was merged with and into Merger Sub II and Merger Sub II became a wholly owned subsidiary of Ikena. Ikena then changed its name to “ImageneBio, Inc.” and the business conducted by Ikena became primarily the business conducted by Inmagene immediately prior to the Merger.

Under the terms of the Merger Agreement, each ordinary share and preferred share of the Company (each such share, an “Inmagene Share”) held as treasury shares were canceled. Each then-outstanding Inmagene Share was converted into the right to receive 0.0030510 shares of Ikena common stock, par value $0.001 per share (“Ikena Common Stock”) (such ratio, the “Exchange Ratio”) and each then-outstanding option to purchase Inmagene Shares was converted into an option to purchase Ikena Common Stock, subject to adjustment as set forth in the Merger Agreement. Ikena issued an aggregate of 4,601,368 shares of Ikena Common Stock to Inmagene shareholders based on the Exchange Ratio, resulting in 11,181,670 shares of common stock outstanding immediately following the Merger and the PIPE Financing (discussed below).

Concurrently with the execution of the Merger Agreement, Ikena entered into the Subscription Agreements with certain accredited investors, pursuant to which, following the closing of the Merger, the such investors subscribed for and purchased an aggregate of 2,508,337 shares of Ikena Common Stock, after giving effect to the Reverse Stock Split, at a price of approximately $29.90 per share for aggregate gross proceeds of approximately $75.0 million.

The shares of Ikena Common Stock, which traded on The Nasdaq Global Market through the close of business on Friday, July 25, 2025, under the ticker symbol “IKNA,” commenced trading on The Nasdaq Capital Market on a post-Reverse Stock Split adjusted basis under the ticker symbol “IMA” on July 28, 2025. As a result of the closing of the Merger, subsequent to quarter ended June 30, 2025, certain of the Company’s vested stock options became exercisable and all outstanding restricted stock units fully vested.

The Non-OX40 Divestiture

On July 25, 2025, immediately prior to consummation of the Merger, the Company consummated the divestiture of the non-IMG-007 business related assets, business and operations (the “Non-OX40 Business”) controlled by the Company immediately prior to the Merger (the “Non-OX40 Divestiture”). Specifically, the Company sold and transferred (including via sublicense) all of the Non-OX40 Business to Miragene Inc, a newly formed private company and wholly owned subsidiary of the Company (“SellCo”).

As part of the Non-OX40 Divestiture, Miragene Co, a newly formed private company (“BuyCo”) held by the holders of the Company’s outstanding shares prior to the Merger, purchased from the Company all of the outstanding share capital of SellCo (holding the Non-OX40 Business) in exchange for a promissory note in the amount of $8,900,000 issued by BuyCo to the Company. The promissory note accrues interest at an annual rate of 4.61%, with interest payments due monthly in arrears, unless BuyCo elects to capitalize the interest through payment-in-kind (PIK) treatment. The promissory note matures on the earlier of (i) the year 2035 or (ii) the date on which the Company declares the promissory note due and payable or after the occurrence of an event of default. Additionally, in the event that BuyCo receives certain specified milestone or license payments, after the second anniversary of the promissory note, 50% of such proceeds must be used to prepay the outstanding balance of the promissory note. Any payments made under the promissory note from BuyCo to the Company will be distributed to Inmagene CVR holders as Inmagene CVR Payments.

As a result of the Non-OX40 Divestiture, IMG-007, a non-depleting anti-OX40 monoclonal antibody, for the treatment of atopic dermatitis and other potential indications, became the only product candidate of the Company in clinical development.

Transition Services Agreement

In connection with the Non-OX40 Divestiture, the Company entered into a Transition Services Agreement (the “Transition Services Agreement”) with SellCo (as defined above) for certain transitional services related to the ongoing operations of the Company’s business with respect to the IMG-007 program, including services related to chemistry, manufacturing and controls, regulatory affairs, clinical trial support and operations, translational science research and support, bioanalysis, pharmacovigilance, program management, accounting and finance, program management communication, administration and human resources and intellectual property support (collectively, the “Miragene Services”).

The initial term of the Transition Services Agreement is six months, which shall be automatically extended for an additional six months unless during the first three months of the Initial Term, the Company provides written notice to terminate the Transition Services Agreement (as may be extended, the “Initial Term”). In addition, the Company may extend the term for the receipt of the Miragene Services for up to an additional 12 months upon 60 days’ prior written notice prior to the end of the Initial Term.

Upon the closing of the Merger, the Company paid SellCo $1.25 million as pre-payment for the Miragene Services to be provided during the Initial Term. Up to $1.25 million may be payable if the Initial Term is automatically extended for the Miragene Services to be provided during such period. If the Transition Services Agreement is extended beyond the Initial Term, the Miragene Services shall be provided at an annual FTE rate of $200,000.

F-19

In addition, pursuant to the Transition Services Agreement, SellCo shall be permitted to use the Company’s principal executive offices under specified circumstances at an agreed monthly rate.

The Transition Services Agreement may be terminated after the Initial Term by either party upon 60 days’ prior written notice or by SellCo after the completion by the Company of the sale or other disposition of any portion of the Company’s business, assets or properties constituting all or a majority of the IMG-007 Business (as defined in the Transition Services Agreement).

F-20