cntx-20251231

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2025

Commission file number 001-40654

CONTEXT THERAPEUTICS INC.

(Exact name of registrant as specified in its charter)

2001 Market Street, Suite 3915, Unit #15

Philadelphia, Pennsylvania19103

(Address of principal executive offices, including zip)

(267) 225-7416

(Registrant’s telephone number, including area code)

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

Title of Each Class Trading Symbol(s) Name of Each Exchange on Which Registered

Common Stock, par value $0.001 per share CNTX The Nasdaq Stock Market LLC

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

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes No ☒

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

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐ Accelerated filer ☐

Non-accelerated filer ☒ Smaller reporting company ☒

Emerging growth company ☒

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

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

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

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

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☒

As of June 30, 2025 (the last business day of the registrant's most recently completed second fiscal quarter), the aggregate market value of the registrant's common stock held by non-affiliates was approximately $57.9 million based on the last reported sale price of the registrant's common stock on The Nasdaq Stock Market on June 30, 2025.

As of March 19, 2026, the registrant had 91,879,177 shares of common stock, $0.001 par value per share, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive Proxy Statement for its 2026 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K are incorporated by reference in Part III, Items 10-14 of this Annual Report on Form 10-K.

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Risk Factor Summary ii

Note Regarding Forward-Looking Statements iv

Market, Industry and Other Data vii

Part I

Item 1. Business 1

Item 1A. Risk Factors 21

Item 1B. Unresolved Staff Comments 58

Item 1C. Cybersecurity 58

Item 2. Properties 59

Item 3. Legal Proceedings 59

Item 4. Mine Safety Disclosures 59

Part II

Item 6. [Reserved] 60

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 70

Item 8. Financial Statements and Supplementary Data 71

Item 9A. Controls and Procedures 92

Item 9B. Other Information 93

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 93

Part III

Item 10. Directors, Executive Officers and Corporate Governance 94

Item 11. Executive Compensation 94

Item 14. Principal Accountant Fees and Services 94

Part IV

Item 15. Exhibits and Financial Statement Schedules 95

Signatures 99

_________________________

Unless the context otherwise requires, all references in this Form 10-K to "Context," the "Company," "we," "us," and "our" refer to Context Therapeutics Inc. and its subsidiaries.

_________________________

Trademark Notice

This Form 10-K contains references to our trademarks and to trademarks belonging to other entities. Context Therapeutics® is a registered trademark of Context in the United States. All other trademarks, trade names and service marks appearing in this Form 10-K are the property of their respective owners. We do not intend our use or

display of other companies' trade names or trademarks to imply a relationship with, or endorsement or sponsorship of us by, any other companies.

RISK FACTOR SUMMARY

The risk factors summarized below could materially harm our business, operating results and/or financial condition, impair our future prospects and/or cause the price of our common stock to decline. For more information, see “Item 1A. Risk Factors” in this Annual Report on Form 10-K for the year ended December 31, 2025. Material risks that may affect our business, operating results and financial condition include, but are not necessarily limited to, the following:

Risks Related to Our Business and Industry

•We have never been profitable and may never achieve or maintain profitability.

•We will need to raise additional funding, which may not be available on acceptable terms, or at all. Failure to obtain this necessary capital when needed may force us to delay, limit or terminate our product development efforts or other operations.

•If we are unable to raise substantial additional capital on acceptable terms, or at all, we may be forced to delay, reduce or eliminate some or all of our research programs, product development activities and commercialization efforts.

•We may not be able to successfully integrate recent and future acquisitions.

•We have a limited operating history, which makes it difficult to evaluate our current business and future prospects and may increase the risk of your investment.

•We may expend our limited resources pursuing particular research programs or product candidates that may be less successful or profitable than other programs or product candidates.

•Fluctuating foreign exchange rates could increase our operating expenses and adversely affect our results of operations.

•Inflation, geopolitical developments, global supply chain disruptions and public health concerns could adversely affect our business and results of operations.

•Changes in U.S. trade policy, including the imposition of tariffs and the resulting consequences, may have a material adverse impact on our business, financial condition, and results of operations.

Risks Related to Our Product Candidates

•Our business is dependent on the successful development, regulatory approval and commercialization of our therapeutic product candidates, CTIM-76, CT-95 and CT-202, which are in the early stages of development.

•Results of preclinical studies, early clinical trials or analyses may not be indicative of results obtained in later trials.

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

•Any product candidate may cause serious adverse events or undesirable side effects, which may delay or prevent marketing approval, or, if approved, require it to be taken off the market, require it to include safety warnings or otherwise limit its sales.

•We may find it difficult to enroll patients in our clinical trials. If we encounter difficulties or delays enrolling patients in our clinical trials, our clinical development activities could be delayed or otherwise adversely affected.

•The success of our business depends primarily upon our ability to identify, develop and commercialize products using our proprietary technologies.

Risks Related to Our Organization, Structure and Operations

•Our reliance on a central team consisting of a limited number of employees and consultants who provide various administrative, research and development, and other services across our organization presents operational challenges that may adversely affect our business.

•Our future success depends on our ability to retain our executive officers and other key executives and to attract, retain and motivate qualified personnel.

Risks Related to Our Reliance on Third Parties

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•We expect to, and do, depend on collaborations with third parties for certain research, development and commercialization activities, and to rely on third parties to conduct, supervise and monitor our clinical trials and some aspects of our research and preclinical testing, as well as for the manufacturing process of product candidates. If any such collaborations or services by such third parties are not successful or not performed in a satisfactory manner, it may harm our business and prospects, and we may not be able to obtain regulatory approval or commercialize product candidates, or such approval or commercialization may be delayed, and our business may be substantially harmed.

•If we are unable to obtain sufficient quantities of raw materials and supplies, at acceptable prices and on a timely basis, it could harm our business.

•We may become involved in disagreements or disputes with our licensees, licensors and other counterparties relating to the development and/or commercialization of our current or past product candidates, which may be time consuming, costly and could harm our efforts to develop our current or future product candidates.

Risks Related to Government Regulation

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

•We expect that CTIM-76, CT-95 and CT-202 will be regulated as biological products, or biologics, and therefore they may be subject to competition from biosimilar applicants.

•The FDA may disagree with our regulatory plan and we may fail to obtain regulatory approval of any product candidate.

•Obtaining and maintaining regulatory approval of a product candidate in one jurisdiction does not mean that we will be successful in obtaining regulatory approval of such product candidate in other jurisdictions.

•Even if we obtain regulatory approval of a product candidate, the product may not gain market acceptance among physicians, patients, hospitals, cancer treatment centers and others in the medical community.

•Coverage and reimbursement may be limited or unavailable in certain market segments for a product candidate, which could make it difficult for us to sell such product candidate, if approved, profitably.

Risks Related to Intellectual Property

•Patents and patent applications involve highly complex legal and factual questions, which, if determined adversely to us, could negatively impact our business position.

•Third parties may assert claims against us alleging infringement of their patents and proprietary rights, or we may need to become involved in lawsuits to defend or enforce our patents, either of which could result in substantial costs or loss of productivity, delay or prevent the development and commercialization of our current and any future product candidates, prohibit our use of proprietary technology or sale of potential products or put our patents and other proprietary rights at risk.

•Our ability to compete effectively in our markets may decline if we do not adequately protect our proprietary rights, and our proprietary rights do not necessarily address all potential threats to our competitive advantages.

•If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or otherwise experience disruptions to our business relationships with our licensors, we could lose license rights that are important to our business.

•We may not be able to protect our intellectual property rights throughout the world.

Risks Related to the Market for Our Common Stock

•Our common stock may be volatile or may decline regardless of our operating performance.

•We may not be able to maintain compliance with the continued listing requirements of The Nasdaq Stock Market.

•Raising additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our technologies or product candidates.

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NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Form 10-K contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on our management’s beliefs and assumptions and on information currently available to us. All statements other than statements of historical facts are forward-looking statements. The forward-looking statements are contained principally in, but not limited to, the sections entitled “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Business.” These statements relate to future events or to our future financial performance and involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Forward-looking statements include, but are not limited to, statements about:

•the ability of our preclinical studies and clinical trials to demonstrate safety and efficacy of our product candidates, and other positive results;

•the timing, progress and results of preclinical studies and clinical trials for CTIM-76, CT-95, CT-202 and other product candidates we may develop, including statements regarding the timing of initiation and completion of studies or trials and related preparatory work, the period during which the results of the trials will become available, and our research and development programs;

•the timing, scope and likelihood of U.S. and foreign regulatory filings and approvals, including timing of Investigational New Drug (“IND”) applications and final U.S. Food and Drug Administration (“FDA”) approval, as well as similar applications and approvals in foreign jurisdictions, of CTIM-76, CT-95, CT-202 and any other future product candidates;

•our ability to develop and advance CTIM-76, CT-95, CT-202 and any other future product candidates, and successfully complete clinical studies;

•our manufacturing, commercialization, and marketing capabilities, implementations thereof, and strategy;

•our plans relating to commercializing our product candidates, if approved, including the geographic areas of focus, sales strategy, and our ability to grow a sales team;

•our intellectual property position, including the scope of protection we are able to establish and maintain for intellectual property rights covering CTIM-76, CT-95, CT-202, and other product candidates we may develop, including the extensions of existing patent terms where available, the validity of intellectual property rights held by third parties, and our ability not to infringe, misappropriate or otherwise violate any third-party intellectual property rights;

•any disagreements or disputes with our licensees, licensors and other counterparties relating to the development and/or commercialization of our current or past product candidates, which may be time consuming, costly and could harm our efforts to develop our current or future product candidates;

•the impact of economic uncertainties on our business and operations, including clinical trials, manufacturing suppliers, collaborators, use of contract research organizations and employees;

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

•the size of the market opportunity for our product candidates, including our estimates of the number of patients who suffer from the diseases we are targeting;

•our competitive position and the success of competing therapies that are or may become available;

•the beneficial characteristics, safety, efficacy and therapeutic effects of our product candidates;

•our ability to obtain and maintain regulatory approval of our product candidates;

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•our plans relating to the further development of our product candidates, including additional indications we may pursue;

•existing regulations and regulatory developments in the United States, Europe, Australia, and other jurisdictions;

•our continued reliance on third parties to conduct and support clinical trials of our product candidates, and for the manufacture of our product candidates for preclinical studies and clinical trials;

•our ability to obtain, and negotiate favorable terms of, collaboration, licensing or other arrangements that may be necessary or desirable to develop, manufacture or commercialize our product candidates;

•the pricing and reimbursement of CTIM-76, CT-95, CT-202 and other product candidates we may develop, if approved;

•the rate and degree of market acceptance and clinical utility of CTIM-76, CT-95, CT-202 and other product candidates we may develop;

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

•our current plans to seek additional capital in the future through equity and/or debt financings, partnerships, collaborations, licensing agreements or other strategic arrangements, or other sources and the availability of such future sources of capital;

•our financial performance;

•our ability to maintain compliance with the continued listing requirements of The Nasdaq Stock Market;

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

•the impact of laws and regulations;

•our expectations regarding the period during which we will qualify as an emerging growth company under the JOBS Act;

•our anticipated use of our existing cash and cash equivalents; and

•other risks and uncertainties, including those listed under the caption “Risk Factors”.

In some cases, you can identify forward-looking statements by terms such as “may,” “could,” “will,” “should,” “would,” “expect,” “plan,” “intend,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “project” or “continue” or the negative of these terms or other comparable terminology. These statements are only predictions. You should not place undue reliance on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, which are, in some cases, beyond our control and which could materially affect results. Factors that may cause actual results to differ materially from current expectations include, among other things, those listed under the heading “Risk Factors” and elsewhere in this Form 10-K. If one or more of these risks or uncertainties occur, or if our underlying assumptions prove to be incorrect, actual events or results may vary significantly from those implied or projected by the forward-looking statements. No forward-looking statement is a guarantee of future performance. As a result, you should not place undue reliance on forward-looking statements.

This Form 10-K also contains certain data and information which we obtained from various government and private publications or third parties. Although we believe that the publications, information, data and reports are reliable, we have not independently verified the data. Statistical data in these publications includes projections that are based on a number of assumptions. If any one or more of the assumptions underlying the market data is later found to be incorrect, actual results may differ from the projections based on these assumptions. Scientific and clinical data presented herein are – by definition prior to completion of the clinical trial and a clinical study report – preliminary in nature and subject to further quality checks including customary source data verification.

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The forward-looking statements made in this Form 10-K relate only to events or information as of the date of the Form 10-K (or any earlier date indicated in such statement). Although we are a public company and have ongoing disclosure obligations under United States federal securities laws, we do not intend to update or otherwise revise the forward-looking statements in this Form 10-K, whether as a result of new information, future events or otherwise.

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MARKET, INDUSTRY AND OTHER DATA

This Annual Report on Form 10-K contains estimates, projections, market research and other information concerning our industry, our business, markets for our product candidates, the size of those markets, and the prevalence of certain medical conditions. Unless otherwise expressly stated, we obtain this information from reports, research surveys, studies and similar data prepared by market research firms and other third parties, industry, medical and general publications, government data and similar sources as well as from our own internal estimates and research and from publications, research, surveys and studies conducted by third parties on our behalf. Information that is based on estimates, projections, market research or similar methodologies is inherently subject to uncertainties and actual events or circumstances may differ materially from events and circumstances that are reflected in this information. As a result, you are cautioned not to give undue weight to such information.

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PART I.

Item 1. Business

Overview

We are a clinical-stage biopharmaceutical company advancing T cell engaging (“TCE”) bispecific antibodies (“bsAb”) for solid tumors. Our goal is to build an innovative portfolio of TCE bispecific therapeutics, including CTIM-76, a Claudin 6 (“CLDN6”) x CD3 TCE, CT-95, a Mesothelin (“MSLN”) x CD3 TCE, and CT-202, a Nectin cell adhesion protein 4 (“Nectin-4”) x CD3 TCE.

Our pipeline is shown below:

CTIM-76 is a CLDN6 x CD3 TCE that is intended to redirect T-cell-mediated lysis toward malignant cells expressing CLDN6. CLDN6 is a tight junction membrane protein target expressed in multiple solid tumors and absent from or expressed at low levels in healthy adult tissues. IND-enabling studies on CTIM-76 have been completed. On May 2, 2024, we announced the U.S. Food and Drug Administration (the “FDA”) cleared our IND application to support the initiation of a Phase 1 dose escalation and expansion trial of CTIM-76 in patients with CLDN6-positive gynecologic and testicular cancers. We dosed the first patient in our CTIM-76 Phase 1 trial in January 2025. We expect to share Phase 1a interim data for the CTIM-76 trial in June 2026.

CT-95 is an MSLN x CD3 TCE that is intended to redirect T-cell-mediated lysis toward malignant cells expressing MSLN. MSLN is a membrane protein overexpressed in approximately 30% of cancers. We dosed the first patient in our CT-95 Phase 1 trial in April 2025. We expect to share Phase 1a interim data for the CT-95 trial in September 2026.

CT-202 is a Nectin-4 x CD3 TCE that targets Nectin-4, a cell surface protein that is highly and frequently overexpressed in a variety of solid tumors, including bladder, colorectal, lung and breast. Nectin-4 is a clinically validated target for cancer therapy using a traditional antibody-drug conjugate (“ADC”), but it is also associated with certain adverse events, including neuropathy and rash. CT-202 is a pH-dependent TCE that is designed to be preferentially active within the tumor microenvironment. We submitted our application to the Australian Bellberry Human Research Ethics Committee (“HREC”) in March 2026 to support the initiation of a first-in-human trial for CT-202. We expect to dose the first patient in our CT-202 Phase 1 trial in the third quarter of 2026.

Beyond these product candidates, we continue to evaluate opportunities to expand our pipeline. We believe our team and capabilities position us to be a leader in developing novel therapies targeting solid tumors. We retain full worldwide development and commercialization rights to certain CTIM-76 patents in the field of bispecific

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antibodies, full worldwide development and commercialization rights to CT-95 patents, and full worldwide development and commercialization rights to certain CT-202 patents.

Our Strategy

Our goal is to deliver safe and effective selective cancer therapies for patient populations with significant unmet medical needs. Key elements of our strategy include:

•Rapidly advance our CTIM-76 and CT-95 clinical programs through Phase 1 proof of concept. We are currently evaluating CTIM-76 in a Phase 1 clinical trial and plan to provide Phase 1a interim data for the CTIM-76 trial in June 2026. Additionally, we plan to provide Phase 1a interim data for the CT-95 trial in September 2026.

•Rapidly advance our third program, CT-202, into clinical development. We submitted our application to the HREC in March 2026 to support the initiation of a first-in-human trial for CT-202. We expect to dose the first patient in our CT-202 Phase 1 trial in the third quarter of 2026.

•Seek opportunities to expand our pipeline of selective cancer drug candidates and targets. We intend to continue to seek opportunities to expand our TCE pipeline for solid tumors. If we identify targets that we deem to have high potential to address unmet medical needs, we may develop, in-license or acquire assets with therapeutic potential against those identified selective cancer targets.

•Evaluate strategic opportunities to potentially accelerate development timelines and enhance the commercial potential of our product candidates globally. We intend to leverage our TCE expertise to advance a novel pipeline. We plan to commercialize our product candidates in key markets, either alone or with strategic partners, and seek to maximize the worldwide commercial potential of our programs, including the potential to out-license certain assets during development to a third party that may accelerate development and commercialization of one or all of our assets.

Our Product Pipeline and Development

CLDN6xCD3 TCE program: CTIM-76

Our clinical product candidate, CTIM-76, is a CLDN6 x CD3 TCE that is intended to redirect T-cell-mediated lysis toward malignant cells expressing CLDN6. CLDN6 is a tight junction membrane protein target that has high prevalence across many solid tumors and is absent from or expressed at low levels in healthy adult tissues.

We believe CTIM-76 has the potential to be a differentiated CLDN6 product candidate, due in part to: (i) its high selectivity for CLDN6 over Claudin 3 (“CLDN3”), Claudin 4 (“CLDN4”), and Claudin 9 (“CLDN9”); and (ii) its potential ability to target tumors with low, medium or high levels of CLDN6 expression, which could potentially result in a broader target population and greater commercial opportunity compared with other approaches.

Structure and Mechanism of Action

CLDN6 is an oncofetal protein that is normally present at higher levels during embryonic development. In normal, adult tissue, CLDN6 is turned off or has very low levels of expression due to epigenetic silencing. CLDN6 is thought to be reactivated by some cancers to adopt a more embryonic phenotype through the process of dedifferentiation.

The structural complexity of CLDN6 and its similarity to other Claudin proteins expressed on healthy tissue, particularly CLDN3, CLDN4, and CLDN9, make selectivity a key development challenge that must be addressed by CLDN6-targeting assets in development.

The preclinical data below illustrate that CTIM-76 is a highly selective and potent CLDN6 x CD3 TCE.

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Market Opportunity

There is a significant global opportunity for the treatment of patients with tumors expressing CLDN6. CLDN6 is overexpressed in several cancers with significant unmet needs, including ovarian, non-small cell lung, colon, endometrial, breast and testicular, with expression being highest in ovarian, endometrial, and testicular adenocarcinomas.

Estimated incidence information for annual new cancer cases in the United States and CLDN6 expression rates for certain cancers with significant unmet needs are shown below. We estimate that greater than 50,000 patients per year in the United States have CLDN6- positive relapse/refractory (“R/R”) disease.

Initial indications of interest are based on: (i) CLDN6 prevalence; (ii) patient population size; (iii) observed clinical responses; and (iv) potential for accelerated development.

1 Context internal Phase 1 data; 2 Context internal biopsy prevalence screen data; 3 Mackensen, Nature Medicine, 2023. Incidences based on public estimates; R/R or last-line patient population approximated by annual mortality; CLDN6 target prevalence is based on IHC or RNAseq from published reports. Patient population derived from midpoint of CLDN6 positive population multiplied by R/R incident population.

Clinical Validation of the Target and Potential for Broader Patient Population

Based on clinical data reported for other therapeutic agents targeting CLDN6, including BioNTech (BNT211), TORL (TORL-1-23), and Daiichi Sankyo (DS9606a), in various phases of clinical development, including ADC and CAR T-cell approaches, we believe this target has been clinically validated. Whereas both ADC and CAR T-cell anti-CLDN6 approaches have required a substantial portion of tumor cells with high expression of CLDN6 for anti-

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tumor activity, we believe a T cell engager approach could potentially target tumors with varying levels of CLDN6 expression, including tumors with low levels of expression. Therefore, CTIM-76 could potentially capture a broader patient population and greater commercial opportunity.

Clinical Development Plan

We have an active IND for CTIM-76 with the FDA. In January 2025, we announced that the first patient had been dosed in the CTIM-76 Phase 1 clinical trial, which is a dose escalation and expansion trial in patients with solid tumors likely to express CLDN6. In the dose escalation part of our Phase 1 trial, we are enrolling patients with advanced unresectable or metastatic ovarian, endometrial or testicular cancer in increasing dose levels. The primary objective in dose escalation is to evaluate the safety and tolerability of CTIM-76. In the expansion part of our Phase 1 trial, we plan to evaluate two doses and at least two dose schedules in a single cancer type based upon dose escalation data. The primary objective in expansion will be to evaluate preliminary anti-tumor activity of CTIM-76 and to select a dose and dose schedule for future trials. CLDN6 expression is required for enrollment in our Phase 1 trial for patients with ovarian and endometrial cancer. Due to high CLDN6 expression, prospective screening for testicular cancer is not required.

Mesothelin x CD3 TCE program: CT-95

Our clinical product candidate, CT-95, is an MSLN x CD3 TCE that is intended to redirect T-cell-mediated lysis toward malignant cells expressing MSLN. MSLN is a membrane protein overexpressed in approximately 30% of cancers. One challenge in developing MSLN-targeted therapies has been the presence of MSLN fragments, also referred to as shed MSLN (“sMSLN”), found in both blood and the tumor microenvironment that can serve as a decoy or sink for MSLN-targeting antibodies. CT-95 is a fully humanized bispecific T cell engager that has a moderate affinity but high avidity for membrane-bound MSLN, minimizing the impact of the sMSLN.

We believe CT-95 has the potential to be a differentiated MSLN product candidate, due in part to: (i) its ability to bind to the membrane-proximal side of MSLN, which has been shown to increase potency compared to a historic program from Harpoon Therapeutics (HPN536), potentially driving improved outcomes for patients; (ii) avidity enhancement that aims to minimize the risk of adverse events, including cytokine release syndrome and hypoxia; and (iii) its potential ability to target tumors with low, medium or high levels of MSLN expression, which could potentially result in a broader target population and greater commercial opportunity compared with non-TCE approaches.

On July 9, 2024, we entered into an asset purchase agreement (the “Asset Purchase Agreement”) pursuant to which we acquired CT-95 (formerly known as LNK-101), from Link (assignment for the benefit of creditors), LLC (“Link”), which succeeded to the assets of Link Immunotherapeutics Inc. The FDA previously cleared the IND application for CT-95.

Pursuant to the Asset Purchase Agreement, we purchased the assets of Link associated with CT-95, including patent rights, know-how, regulatory filings, and inventory of drug substance and drug product (the “Transferred Assets”), on an “as is” and “where is” basis. CT-95 patents are currently being prosecuted and/or maintained in the United States, Europe, Canada, Australia, Japan and Taiwan. We also assumed certain liabilities relating to the Transferred Assets. In consideration of the Transferred Assets, we made a one-time payment to Link of $3.75 million.

Structure and Mechanism of Action

MSLN is bound to tumor cells via a glycosylphosphatidylinositol (“GPI”) linker. Like many GPI-anchored proteins, MSLN can be cut into smaller fragments. The MSLN gene encodes a precursor that is cleaved into two products: a soluble N-terminal protein called megakaryocyte potentiating factor (MPF), and a membrane-bound fragment called full length mesothelin (“FL-MSLN”). FL-MSLN can then be further cleaved into even smaller sMSLN fragments. sMSLN serves as a competitive sink, preventing antibodies from binding to the tumor, which can lead to suboptimal drug exposure and efficacy.

CT-95 was designed to overcome the sMSLN sink through binding to membrane-proximal MSLN epitope and avidity enhancement. CT-95 exhibits moderate affinity for membrane-proximal MSLN but cooperative binding through bivalent binding of CT-95 to two MSLN epitopes results in high avidity binding of CT-95 to the tumor. This

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results in a potentially wide therapeutic window due to: (i) limited crosslinking by sMSLN, mitigating off-tumor T cell activation; and (ii) cooperative binding of MSLN on tumor surface to crosslink CD3, thereby activating T cells.

The figure below indicates that HPN-536 (Harpoon Therapeutics) binds to MSLN fragments in a dose proportional manner, limiting therapeutic exposure, whereas CT-95 does not lose potency in the same OVCAR-3 cell line model.

Market Opportunity

There is a significant global opportunity for the treatment of patients with tumors expressing MSLN. MSLN is overexpressed in several cancers with significant unmet needs, high grade serous ovarian, non-small cell lung, colon, esophageal, pancreatic carcinoma, endometrial, gastric, and mesothelioma, with expression being highest in high-grade serous ovarian cancer, pancreatic carcinoma, and mesothelioma.

Estimated incidence information for annual new cancer cases in the United States and MSLN expression rates for certain cancers with significant unmet needs are shown below. We estimate that greater than 100,000 patients per year in the United States have mesothelin-positive R/R disease.

Initial indications of interest are based on: (i) MSLN prevalence; (ii) patient population size; (iii) observed clinical responses; and (iv) potential for accelerated development.

Incidences based on public estimates; R/R or last-line patient population approximated by annual mortality; MSLN target prevalence is based on Simon et al, Biomedicines, 2021. Patient population derived from MSLN positive population multiplied by R/R incident population.

Clinical Validation of the Target and Potential for Broader Patient Population

Based on clinical data reported for other therapeutic agents targeting MSLN, including RemeGen Biosciences (RC88) and TCR2 Therapeutics (gavocabtagene autoleucel), in various phases of clinical development, including

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ADC and CAR T-cell approaches, we believe this target has been clinically validated. Whereas both ADC and CAR T-cell anti-MSLN approaches have required a substantial portion of tumor cells with high expression of MSLN for anti-tumor activity, we believe a T cell engager approach could potentially target tumors with varying levels of MSLN expression, including tumors with low levels of expression. Therefore, MSLN could potentially capture a broader patient population and greater commercial opportunity.

Clinical Development Plan

We have an active IND for CT-95 with the FDA. In April 2025, we announced that the first patient had been dosed in the CT-95 Phase 1 trial, which is a dose escalation trial in patients with solid tumors likely to express MSLN. We are enrolling patients with advanced unresectable or metastatic high grade serous ovarian cancer, pancreatic carcinoma, and mesothelioma. The primary objective in dose escalation is to evaluate the safety and tolerability of CT-95. Expression of MSLN is not required for enrollment in our Phase 1 trial; tumor tissue samples are being collected for retrospective biomarker assessment of MSLN expression by immunohistochemistry (“IHC”).

Nectin-4 x CD3 TCE program: CT-202

Our preclinical product candidate, CT-202, targets Nectin-4, which is highly and frequently overexpressed in a variety of cancers. Nectin-4 is a clinically-validated target for cancer therapy using a traditional antibody-drug conjugate, but it is also associated with certain adverse events, including neuropathy and rash. CT-202 is a pH-dependent TCE that is designed to be preferentially active within the acidic tumor microenvironment.

On September 23, 2024, we entered into a license agreement (the “BioAtla License Agreement”) with BioAtla, Inc. ("BioAtla"), pursuant to which we obtained an exclusive, worldwide license to develop, manufacture and commercialize two licensed antibodies (the “BioAtla Assets”), including BA3362 (renamed by the Company as CT-202), BioAtla’s Nectin-4 x CD3 TCE.

As partial consideration for the exclusive license under the BioAtla License Agreement, we made an upfront payment of $11.0 million, and BioAtla is eligible to receive up to $122.5 million in additional milestone payments based upon the achievement of specified pre-clinical, clinical, development and commercial milestones, as well as tiered mid-single-digit to low double-digit royalties on future net sales for products containing the BioAtla Assets, subject to standard reductions.

We believe CT-202 has the potential to be a differentiated Nectin-4 product candidate, due in part to: (i) its ability to preferentially bind to Nectin-4 and CD3 in the low pH environment of tumor relative to pH neutral normal tissue, which has the potential to reduce the risk of dermatologic side effects associated with Nectin-4 expression in the skin; (ii) avidity enhancement to improve CT-202 residence in the tumor microenvironment and minimize the risk of cytokine release syndrome; and (iii) its potential ability to target tumors with low, medium or high levels of Nectin-4 expression, which could potentially result in a broader target population and greater commercial opportunity compared with non-TCE approaches.

Structure and Mechanism of Action

CT-202 incorporates logic gating through pH dependence and avidity enhancement which is intended to spare Nectin-4 in normal tissue. Because of its expression in healthy epidermal keratinocytes, sweat glands, and hair follicles, Nectin-4 targeted treatments are often associated with dermatological side effects. CT-202 incorporates pH dependent binding to both Nectin-4 and CD3 to minimize binding to healthy tissues and maximize binding and T cell activation within the tumor microenvironment.

CT-202 is avidity optimized to mitigate cytokine release syndrome risk. Cooperative Nectin-4 binding through bivalent binding to the tumor cell surface is intended to reduce T cell crosslinking in the absence of target. Steric hindrance of CD3 binding by Fc domain prevents T cell crosslinking by single CT-202 molecules.

The figure below indicates our two-pronged approach for CT-202 to overcome Nectin-4 expression in the skin and to generate robust antitumor responses while minimizing the risk of cytokine release syndrome.

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1 Chang, PNAS, 2021

Market Opportunity

There is a significant global opportunity for the treatment of patients with tumors expressing Nectin-4. Nectin-4 is overexpressed in several cancers with significant unmet needs, including bladder (urothelial), non-small cell lung, pancreatic, head and neck, esophageal, colorectal, gastric, and triple negative breast cancer (“TNBC”), with expression being highest in bladder, colorectal, and TNBC.

Estimated incidence information for annual new cancer cases in the United States and Nectin-4 expression rates for certain cancers with significant unmet needs are shown below. We estimate that greater than 125,000 patients per year in the United States have Nectin-4- positive R/R disease. Initial indications of interest are based on: (i) Nectin-4 prevalence; (ii) patient population size; and (iii) observed clinical responses.

Incidences based on public estimates; Relapsed/refractory (R/R) or last-line patient population approximated by annual mortality; Patient population derived from Nectin-4 positive population multiplied by R/R incident population. 1 Kobecki, Int J Mol Sci, 2023; 2 Nikanjan, Can Let, 2025; 3 Challita, Can Res, 2016; 4 Zhang, Oncol Lett, 2018; 5 Zeindler, Front Med, 2019; 6 Takano, Mol Bio, 2009; 7 Muro, ESMO Open, 2025

Clinical Validation of the Target and Potential for Broader Patient Population

Based on clinical data reported for other therapeutic agents targeting Nectin-4, including Pfizer (Padcev®) and Bicycle Therapeutics (BT8009), including ADC approaches, we believe this target has been clinically validated. Padcev is currently approved for locally advanced or metastatic urothelial carcinoma, which is associated with high

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levels of Nectin-4 expression. Whereas ADC Nectin-4 approaches require a substantial portion of tumor cells with high expression of Nectin-4 for anti-tumor activity, we believe a TCE approach could potentially target tumors with varying levels of Nectin-4 expression, including tumors with low levels of expression. Therefore, Nectin-4 could potentially capture a broader patient population and greater commercial opportunity.

Clinical Development Plan

We submitted our application to the HREC in March 2026 to support the initiation of a first-in-human trial for CT-202. We expect to dose the first patient in our CT-202 Phase 1 trial in the third quarter of 2026. The primary objective in dose escalation will be to evaluate the safety and tolerability of CT-202.

Our collaboration and license agreements

Collaboration and Licensing Agreement with Integral Molecular

In April 2021, we entered into a collaboration and licensing agreement with Integral Molecular, Inc. (“Integral”) (the “Integral License Agreement”) for the development of a CLDN6 bsAb for cancer therapy. Under the terms of the Integral License Agreement, we and Integral developed a CLDN6 bsAb that is intended to trigger the activation of T cells and eliminates cancer cells displaying CLDN6. We will conduct preclinical and all clinical development, as well as regulatory and commercial activities through exclusive worldwide rights to develop and commercialize the novel CLDN6 candidates. As a part of the Integral License Agreement, Integral was eligible to receive remaining development and regulatory milestone payments totaling approximately $55 million, sales milestone payments totaling up to $130 million, and tiered royalties of up to 12% of net sales of certain products developed under the Integral License Agreement.

On March 20, 2023, we amended the Integral License Agreement (the “First Amendment”) to remove the previously agreed to second milestone payment and to change the amount of the third milestone payment to increase such payment by the amount of the prior second milestone payment and to add payment for third-party research funding obtained and used by Integral in connection with the development of CTIM-76.

On February 29, 2024, we further amended the Integral License Agreement to reflect updated financial terms. In the course of our further due diligence review of CTIM-76, we determined that certain of the licensed rights under the Integral License Agreement may incorporate intellectual property rights currently held by a third party. Specifically, we are aware of issued patents in the United States and certain foreign jurisdictions expiring in January 2034, and then in 2025 became aware of a patent that issued in the United States expiring in March 2042, in each instance that potentially cover certain of the intellectual property included in CTIM-76. While we believe we will have reasonable defenses against any potential claim of infringement, we may not be successful in such efforts, and we also may not be able to obtain a license to such patent on commercially reasonable terms, or at all.

As part of Amendment 2 to the Integral License Agreement (the "Second Amendment"), Integral’s right to receive certain future payments was reduced as follows: aggregate development and regulatory milestone payments were reduced from $55 million to $15 million, aggregate sales milestone payments were reduced from $130 million to $12.5 million, and a tiered royalty of 8-12% that commenced at first commercial sale was reduced to a flat royalty rate of 6% on net sales beginning no sooner than February 1, 2034. The Second Amendment also narrowed the license grant from Integral to us to only cover CTIM-76, removed any further obligation of us to reimburse Integral for any independently obtained research funding Integral applied against CTIM-76 research, and included mutual releases by the parties.

The reduced development and regulatory milestones now reflect a payment due at each of: first patient’s first screening visit in a Phase 1b/2 or Phase 2 clinical trial for CTIM-76, first patient’s first screening visit in a Phase 3 clinical trial for CTIM-76, United States marketing approval for CTIM-76, European Union marketing approval for CTIM-76, United Kingdom marketing approval for CTIM-76, and Japan marketing approval for CTIM-76. The amended commercial milestones now also reflect a payment due upon the achievement of annual net sales of $500 million and annual net sales of $1 billion.

Asset Purchase Agreement with Link

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On July 9, 2024, we entered into the Asset Purchase Agreement pursuant to which we acquired CT-95 (formerly known as LNK-101), from Link, which succeeded to the assets of Link Immunotherapeutics Inc. The FDA previously cleared the IND application for CT-95.

Pursuant to the Asset Purchase Agreement, we purchased all of the Transferred Assets on an “as is” and “where is” basis. CT-95 patents are currently being prosecuted and/or maintained in the United States, Europe, Canada, Australia, Japan and Taiwan. We also assumed certain liabilities relating to the Transferred Assets. In consideration of the purchase of the Transferred Assets, we made a one-time payment to Link of $3.75 million.

Collaboration and Licensing Agreement with BioAtla

On September 23, 2024, we entered into the BioAtla License Agreement with BioAtla, pursuant to which we obtained an exclusive, worldwide license to develop, manufacture and commercialize the BioAtla Assets, including BA3362 (renamed by the Company as CT-202), BioAtla’s Nectin-4 x CD3 TCE.

As partial consideration for the exclusive license under the BioAtla License Agreement, we made an upfront payment of $11.0 million, and BioAtla is eligible to receive up to $122.5 million in additional milestone payments based upon the achievement of specified pre-clinical, clinical, development and commercial milestones, as well as tiered mid-single digit to low double-digit royalties on future net sales for products containing the BioAtla Assets, subject to standard reductions.

Commercialization

We retain full worldwide development and commercialization rights to certain CLDN6 patents in the field of bispecific antibodies, full worldwide development and commercialization rights to CT-95 patents, and full worldwide development and commercialization rights to certain CT-202 patents. We periodically evaluate out-license opportunities for our product candidates and seek to identify drug candidates for novel indications and/or patient subpopulations with an oncology focus that we might in-license. Our commercial plans and strategy for any of our programs may change as programs advance, markets change, and we receive more clinical data, and will depend on availability of current and future capital.

Sales and marketing

We currently have no sales, marketing, or commercial product distribution capabilities, and we may explore partnerships with larger pharmaceutical organizations that already have these capabilities. We intend to build the necessary infrastructure and capabilities over time for the United States, and potentially other regions, following further advancement of a product candidate.

Manufacturing

We do not own or operate, and currently have no plans to establish, any manufacturing facilities. We rely, and expect to continue to rely, on third parties for the manufacture of our current and any future product candidates for preclinical and clinical testing, as well as for commercial manufacture if any product candidate obtains marketing approval. We also rely, and expect to continue to rely, on third parties to package, label, store and distribute our current and any future investigational product candidates, as well as for our commercial products if marketing approval is obtained. We believe that this strategy allows us to maintain a more efficient infrastructure by eliminating the need for us to invest in our own manufacturing facilities, equipment and personnel while also enabling us to focus our expertise and resources on the development of our current and any future product candidates.

To date, we have obtained active pharmaceutical ingredients (“API”) and drug product for our product candidates from several third-party contract manufacturers, including Lonza Sales AG (“Lonza Sales”) and Lonza AG (“Lonza AG”, and collectively with Lonza Sales, “Lonza”) and Just-Evotec Biologics, Inc. We continue to develop our supply chain for CTIM-76, CT-95 and CT-202, and intend to put in place additional framework agreements under which third-party contract manufacturers will generally provide us with necessary quantities of API and drug product on a project-by-project basis based on our development needs.

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On November 7, 2022, we entered into a license agreement (the “Lonza CTIM-76 License Agreement”) with Lonza Sales. Under the terms of the Lonza CTIM-76 License Agreement, to the extent Lonza’s technology is incorporated into CTIM-76, Lonza granted us a non-exclusive license to use certain proprietary Lonza intellectual property and systems for us to develop, manufacture and commercially exploit CTIM-76.

On November 3, 2025, we entered into a license agreement (the “Lonza CT-202 License Agreement”) with Lonza Sales. Under the terms of the Lonza CT-202 License Agreement, to the extent Lonza’s technology is incorporated into CT-202, Lonza granted us a non-exclusive license to use certain proprietary Lonza intellectual property and systems for us to develop, manufacture and commercially exploit CT-202.

We shall pay certain royalties and annual payments to Lonza under the applicable license agreement with respect to the manufacturing and sale of CTIM-76 or CT-202, as applicable, which amounts shall be determined by the party manufacturing CTIM-76 or CT-202, as applicable, and ranges from a potential annual payment of up to less than $500,000 per asset and a royalty per asset on net sales from 0% up to a low single digit percentage. Under each respective license agreement, the royalty payments and annual payments would be reduced per asset in certain circumstances, including should the valid claims for any such patent rights not exist in the country in which CTIM-76 or CT-202, as applicable, is being sold, and the royalty payments per asset would expire upon the later of the expiration of the licensed patents in the country in which CTIM-76 or CT-202, as applicable, is being sold, the expiration of the licensed patents in the country in which CTIM-76 or CT-202, as applicable, is being manufactured, and 10 years from the first commercial sales of CTIM-76 or CT-202, as applicable, in such country of sale.

The Lonza CTIM-76 License Agreement and the Lonza CT-202 License Agreement each continue until respectively terminated. We or Lonza may terminate either the Lonza CTIM-76 License Agreement or the Lonza CT-202 License Agreement, as applicable, for uncured material breaches or insolvency of the other party. We can unilaterally terminate the Lonza CTIM-76 License Agreement or the Lonza CT-202 License Agreement with prior written notice to Lonza, and Lonza can also unilaterally terminate the Lonza CTIM-76 License Agreement or the Lonza CT-202 License Agreement upon certain actions by us.

The Lonza CTIM-76 License Agreement and Lonza CT-202 License Agreement also each contain customary representations, warranties, indemnification and other obligations of us and Lonza.

As we advance our current and any future product candidates through development, we will consider our lack of redundant supply for the API and drug product for each product candidate to protect against any potential supply disruptions.

We generally expect to rely on third parties for the manufacture of any companion diagnostics we may develop.

Competition

The pharmaceutical and biotechnology industries are characterized by rapidly advancing technologies, intense competition, and a strong emphasis on proprietary products. While we believe that our technology, the experience of our executive and scientific team, research, clinical capabilities, development experience and scientific knowledge provide us with competitive advantages, we face increasing competition from many different sources, including pharmaceutical and biotechnology companies, academic institutions, governmental agencies and public and private research institutions. Product candidates that we successfully develop and commercialize may compete with existing therapies and new therapies that may become available in the future.

Many of our competitors, either alone or with their collaborators, have significantly greater financial resources, established presence in the market, expertise in research and development, manufacturing, preclinical and clinical testing, obtaining regulatory approvals and reimbursement and marketing approved products than we do. These competitors also compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. Mergers and acquisitions may result in even more resources being concentrated in our competitors.

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Our commercial potential could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than products that we may develop. Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market or make our development more complicated. The key competitive factors affecting the success of all of our programs are likely to be efficacy, safety and convenience.

For CTIM-76, our CLDN6 x CD3 TCE, we are aware of several companies developing T cell engagers against CLDN6. Several TCE candidates are currently in clinical development, including those of Beigene (BGB-B455), Third Arc Bio (ARC101), and Xencor (XmAb541). We may face further competition from companies pursuing the development of product candidates that target CLDN6 through other modalities, including Daiichi Sankyo (DS9606), BioNTech (BNT211), and TORL (TORL-1-23).

For CT-95, our MSLN x CD3 TCE, we are aware that Amgen (AMG-305) has a TCE candidate currently in clinical development. We may face further competition from companies pursuing the development of product candidates that target MSLN through other modalities, including RemeGen Biosciences (RC88), Outpace Bio (OPB-101), and Navrogen (NAV001, NAV008).

For CT-202, our Nectin-4 x CD3 TCE, we are aware of several companies developing T cell engagers against Nectin-4. Several TCE candidates are currently in clinical development, including those of Bicycle Therapeutics (BT7480). We may face further competition from companies pursuing the development of product candidates that target Nectin-4 through other modalities, including Pfizer (Padcev®), Bicycle Therapeutics (BT8009), Eli Lilly (LY4052031, LY4101174), Corbus Pharmaceuticals (CRB-701), Bio-Thera (BAT8007), Mabwell (PMW2821), Adcentrx (ADRX-0706), Aktis Oncology (AKY-1189), and Shanghai Henlius Biotech (HLX-309).

Intellectual property

We strive to protect and enhance the proprietary technology, inventions and improvements that are commercially important to our business, including seeking, maintaining and defending our patent rights. We retain full worldwide development and commercialization rights to certain CLDN6 antibody patents in the field of bispecific antibodies, full worldwide development and commercialization rights to CT-95 patents, and full worldwide development and commercialization rights to certain CT-202 patents. Our policy is to seek to protect our proprietary position by, among other methods, filing patent applications in the United States and in jurisdictions outside of the United States directed to our proprietary technology, inventions, improvements and product candidates that are important to the development and implementation of our business. We also rely on trade secrets and know-how relating to our proprietary technology to protect our product candidates and continuing to innovate to develop, strengthen and maintain our proprietary position in the field of oncology. We also plan to rely on data exclusivity, market exclusivity and patent term extensions when available. Our commercial success will depend in part on our ability to obtain and maintain patent and other proprietary protection for our product candidates, technology, inventions and improvements; to preserve the confidentiality of our trade secrets; to defend and enforce our proprietary rights, including any patents that we may own or license in the future; and to operate without infringing on the valid and enforceable patents and other proprietary rights of third parties.

As of March 1, 2026, the Integral Molecular, Inc. patent portfolio covering CTIM-76 and methods of use that we exclusively licensed pursuant to the Integral License Agreement includes three granted U.S. patents, two pending U.S. non-provisional applications, granted patents in China, Eurasia, Japan, Saudi Arabia, Vietnam, Ukraine, and South Africa, and pending foreign applications in United Arab Emirates, Australia, Brazil, Canada, Chile, China, Eurasia, Europe, Hong Kong, Indonesia, Israel, India, Japan, South Korea, Mexico, New Zealand, the Philippines, Saudi Arabia, Singapore, South Africa, Thailand, Taiwan and Vietnam, of which the Philippines and Vietnam are allowed. The U.S. patents are expected to expire in 2040 and 2043, subject to any extensions or disclaimers. We also own two pending U.S. provisional applications, two pending International Patent Cooperation Treaty applications, and a pending application in Taiwan covering CTIM-76 and methods of using it, which, if converted and issued, will expire in 2045, subject to any extensions or disclaimers.

As of March 1, 2026, we own the patent portfolio covering CT-95 and methods of use, which includes one U.S. patent, one pending U.S. non-provisional application, two pending U.S. provisional applications, and pending

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foreign applications in Australia, Canada, Europe, Japan, and Taiwan. The U.S. patent and any patents that grant from the pending applications are expected to expire in 2042, subject to any extensions or disclaimers.

As of March 1, 2026, the BioAtla patent portfolio covering CT-202 and methods of use that we exclusively licensed pursuant to the BioAtla License Agreement includes one U.S. patent, two pending U.S. non-provisional applications, a granted patent in Japan, Mexico and Taiwan, and pending foreign applications in Australia, Canada, China, Europe, Hong Kong, Israel, India, Japan, South Korea, Macau, Mexico, Singapore, Thailand, and Taiwan, of which Israel is allowed. The issued patent and any patents that grant from the pending applications are expected to expire from 2039 to 2041, subject to any extensions or disclaimers.

We also possess substantial know-how and trade secrets relating to the development and commercialization of our product candidates, including related manufacturing processes and technology.

With respect to our current and any future product candidates and processes, we intend to develop and commercialize in the normal course of business, and we intend to pursue patent protection covering, when possible, compositions, methods of use, dosing and formulations. We may also pursue patent protection with respect to manufacturing and drug development processes and technologies.

Issued patents can provide protection for varying periods of time, depending upon the date of filing of the patent application, the date of patent issuance and the legal term of patents in the countries in which they are obtained. In general, patents issued for applications filed in the United States can provide exclusionary rights for 20 years from the earliest effective filing date. In addition, in certain instances, the term of an issued U.S. patent that covers or claims an FDA approved product can be extended to recapture a portion of the term effectively lost as a result of the FDA regulatory review period, which is called patent term extension. The restoration period cannot be longer than five years and the total patent term, including the restoration period, must not exceed 14 years following FDA approval. The term of patents outside of the United States varies in accordance with the laws of the foreign jurisdiction, but typically is also 20 years from the earliest effective filing date. However, the actual protection afforded by a patent varies on a product-by-product basis, from country-to-country and depends upon many factors, including the type of patent, the scope of its coverage, the availability of regulatory-related extensions, the availability of legal remedies in a particular country and the validity and enforceability of the patent.

The patent positions of companies like ours are generally uncertain and involve complex legal and factual questions. No consistent policy regarding the scope of claims allowable in patents in the field of oncology has emerged in the United States. The relevant patent laws and their interpretation outside of the United States is also uncertain. Changes in either the patent laws or their interpretation in the United States and other countries may diminish our ability to protect our technology or product candidates and could affect the value of such intellectual property. In particular, our ability to stop third parties from making, using, selling, offering to sell or importing products that infringe our intellectual property will depend in part on our success in obtaining and enforcing patent claims that cover our product candidates, technology, inventions and improvements. We cannot guarantee that patents will be granted with respect to any of our pending patent applications or with respect to any patent applications we may file in the future, nor can we be sure that any patents that may be granted to us in the future will be commercially useful in protecting our products, the methods of use or manufacture of those products. Moreover, even our issued patents may not guarantee us the right to commercialize our product candidates, if approved. Patent and other intellectual property rights in the pharmaceutical and biotechnology space are evolving and involve many risks and uncertainties. Third parties may have blocking patents that could be used to prevent us from commercializing our product candidates and practicing our proprietary product candidates, and our issued patents may be challenged, invalidated or circumvented, which could limit our ability to stop competitors from marketing related products or could limit the term of patent protection that otherwise may exist for our product candidates. Moreover, such third parties may obtain damages against us, which could require us to make commercially reasonable royalty payments, payments for lost profits, or other damages, costs and expenses. In addition, the scope of the rights granted under any issued patents may not provide us with protection or competitive advantages against competitors with similar products. Furthermore, our competitors may independently develop similar products that are outside the scope of the rights granted under any issued patents. For these reasons, we may face competition with respect to our product candidates. Moreover, because of the extensive time required for development, testing and regulatory review of a potential product, it is possible that, before any particular product candidate can be

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commercialized, any patent protection for such product may expire or remain in force for only a short period following commercialization, thereby reducing the commercial advantage the patent provides.

Government Regulation

U.S. Regulatory Pathway

We expect that CTIM-76, CT-95 and CT-202 will each be classified and regulated by the FDA as a biologic. We expect that any small molecule product that we may develop will be classified and regulated by the FDA as a drug. A new drug application (“NDA”) is required to introduce a drug into interstate commerce. A biologics license application (“BLA”) is required to introduce a biologic product into interstate commerce. The specific requirements of NDAs and BLAs include applicant information, product information, manufacturing information, pre-clinical data, clinical data, and labelling. The most important, time-consuming, and expensive aspect of preparing for a BLA or NDA is conducting clinical trials to demonstrate safety and effectiveness. The requirements of such clinical trials heavily influence the eventual allowable product label claims. The FDA has a performance goal as defined in the Prescription Drug User Fee Act of 10 months for a standard submission and six months for priority review. It is not uncommon for NDAs and BLAs to require medical advisory board review prior to the FDA granting marketing approval. A facility inspection verifying the manufacturing systems is also usually performed prior to FDA approval.

The FDA offers a number of expedited development and review programs for qualifying product candidates, including the fast track program. New drug and biological product candidates are eligible for fast track designation if they are intended to treat a serious or life-threatening disease or condition and demonstrate the potential to address unmet medical needs for the disease or condition. Fast track designation considers the combination of the product candidate’s therapeutic potential and the specific indication for which it is being studied. The sponsor of a new drug or biologic may request that the FDA designate product candidate as fast track at any time during clinical development. The sponsor of a fast track designated product candidate has opportunities for more frequent interactions with the applicable FDA review team during product candidate development. A fast track product candidate may also be eligible for rolling review, where the FDA may consider for review sections of the NDA/BLA on a rolling basis before the complete application is submitted upon agreement with the FDA. Fast track designation does not change the standards for approval but may expedite the development or approval process. Even if a product candidate qualifies for this program, the FDA may later decide that the product candidate no longer meets the conditions for qualification and rescind the designation or decide that the time period for FDA review or approval will not be shortened.

Under the Orphan Drug Act, the FDA may grant orphan drug designation to drugs and biologics intended to treat a rare disease or condition, which is generally a disease or condition that affects fewer than 200,000 individuals in the United States, or more than 200,000 individuals in the United States and for which there is no reasonable expectation that the cost of developing and making available in the United States a drug for this type of disease or condition will be recovered from sales in the United States for that drug. Orphan drug designation must be requested before submitting an NDA/BLA. If the FDA grants orphan drug designation, the FDA then discloses publicly the identity of the therapeutic agent and its potential orphan use. Orphan drug designation does not convey any advantage in or shorten the duration of the regulatory review and approval process.

If a product that has orphan drug designation subsequently receives the first FDA market approval for the disease for which it has such designation, the product is entitled to orphan product exclusivity, which means that the FDA may not approve any other applications to market the same drug for the same indication, except in very limited circumstances, for seven years. Orphan drug exclusivity, however, could also block the approval of one of our products for seven years if a competitor obtains approval of the same drug for the same indication or disease as defined by the FDA.

We have in the past used and intend to continue to utilize the services of third-party experts to supplement internal regulatory planning and implementation.

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Ongoing FDA Regulation

After the FDA permits a product to enter commercial distribution, numerous and pervasive regulatory requirements continue to apply to our business operations, products and technologies. These include:

•current good manufacturing practice (“cGMP”) requirements applicable to drugs and biologics, which require manufacturers, including third-party manufacturers, to follow stringent production, control, quality assurance, supplier qualification, documentation and other procedures throughout all aspects of the manufacturing process;

•labeling and marketing regulations which require that promotion is truthful, not misleading, fairly balanced and consistent with FDA-approved labeling for prescription drug and biologic products;

•advertising and promotion requirements, including FDA prohibitions against the promotion of products for uncleared, unapproved or off-label uses and FDA guidance on off-label dissemination of information and responding to unsolicited requests for information;

•restrictions on sale, distribution or use;

•product establishment, registration and listing requirements and reporting requirements;

•recall requirements, including a mandatory recall if there is a reasonable probability that a product would cause serious adverse health consequences or death;

•an order of repair, replacement or refund; and

•post-market surveillance activities and regulations, which apply when necessary to protect the public health or to provide additional safety and effectiveness data.

The FDA has broad post-market and regulatory enforcement powers. Manufacturers of biologic products and drug products are subject to unannounced inspections by the FDA and other state, local and foreign regulatory authorities to assess compliance with cGMP and other applicable regulations, and these inspections may include the manufacturing facilities of any suppliers.

Failure to comply with applicable regulatory requirements can result in enforcement action by the FDA, which may include any of the following sanctions:

•warning letters, untitled letters, Form 483s, fines, injunctions, consent decrees and civil penalties;

•recall or seizure of products;

•operating restrictions, partial suspension or total shutdown of production;

•the FDA’s refusal of requests for approval of new products or indications for existing products;

•the FDA’s refusal to issue certificates to foreign governments needed to export products for sale in other countries;

•withdrawing approvals that have already been granted; and

•criminal prosecution.

Regulatory Pathway in the EU

Like the United States, the most important and time-consuming part of seeking marketing authorization in the European Union (“EU”) is the clinical trial process. In the EU, the various stages of non-clinical and clinical testing are subject to a significant volume of regulatory requirements and controls.

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The EU Clinical Trials Regulations (“EU CTR”), adopted in April 2014, became applicable on January 31, 2022 and repealed and replaced the EU Clinical Trials Directive. The EU CTR applies to all EU member states, unlike the precedent directive, which required each member state to enact the directive into national law. The EU CTR aims to harmonize the assessment and supervision process for clinical trials throughout the EU through the Clinical Trials Information System (“CTIS”). The CTR creates a centralized process, permitting clinical trial sponsors to submit a single clinical trial application, applicable to all multi-center trial sites within the EEA.

The CTR transition period ended on January 31, 2025, and all clinical trials (and related applications) are now fully subject to the provisions of the CTR.

To be placed on the market in the European Economic Area (“EEA”) following the clinical trial process, new medical products, including biologics, require a marketing authorization (“MA”). An MA application may be made through either the centralized or decentralized process, dependent, among other things, on the type of medical product seeking authorization. A centralized MA is issued by the European Commission based on the opinion of the European Medicines Agency (“EMA”). Centralized MAs are valid throughout the EU and required for certain types of medicinal products like those derived from biotechnological processes, orphan medical products, advanced therapy medicinal products, and medicinal products with a new active substance for the treatment of certain diseases. Where the centralized procedure is not mandatory or chosen, applicants may seek authorization through national procedures, the decentralized procedure, or the mutual recognition procedure, which result in national marketing authorizations granted by individual EU Member States.

Regulatory Pathway in the United Kingdom

As of January 1, 2021 and the implementation of the Windsor Framework on January 1, 2025, the UK is not generally subject to EU laws related to medical products. The EU laws that have been transposed into UK law through secondary legislation remain applicable in the UK; however, new EU legislation such as the EU CTR is not applicable in the UK.

As of January 1, 2025, all of the UK (including England, Wales, Scotland, and Northern Ireland) are regulated under the Medicines and Healthcare products Regulatory Agency (“MHRA”), the standalone UK medicines and medical device regulator. The UK regulatory framework for clinical trials is the Medicines for Human Use (Clinical Trials) Regulations 2004, as amended, which is derived from the EU Clinical Trials Directive. In 2024, the UK introduced amendments to the law that seek to streamline the process and accelerate approvals, while maintaining appropriate safety standards. The amendment is set to take full effect starting in April 2026.

In order to obtain a UK marketing authorization to place medical products on the market in the UK, an applicant must follow one of the UK national authorization procedures or one of the remaining post-Brexit international cooperation procedures. The MHRA may rely on the International Recognition Procedure (“IRP”) when reviewing certain types of MA applications. Pursuant to the IRP, the MHRA will consider the expertise and decisions of trusted regulatory partners (e.g., the medicines regulatory authorities in Australia, Canada, Switzerland, Singapore, Japan, the U.S. and the EMA). The MHRA will conduct a targeted assessment of IRP applications but retains the authority to reject applications if the evidence provided is considered insufficiently robust.

Regulatory Pathway in Australia

The Australian Therapeutic Goods Administration (“TGA”) and the National Health and Medical Research Council (“NHMRC”) set the legislative, regulatory and good clinical practice (“GCPs”) requirements for clinical trials in Australia. Australia has also adopted the ICH guidelines on GCP. Like other jurisdictions discussed above, pre-clinical trials are required to support a first-in-human trial in Australia.

The Therapeutic Goods Act 1989 and related regulations establish and maintain the national system of controls relating to the efficacy, quality, safety and timely availability of drugs and medical devices in Australia.The TGA administers two pathways for clinical trials, the Clinical Trials Notification (“CTN”) and Clinical Trials Approval

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(“CTA”) schemes. These pathways govern the process through which “unapproved” (i.e., not yet authorized for the Australian market) therapeutic goods may be supplied solely for experimental use in humans. The choice of which pathway to use (CTN or CTA) is made by the clinical trial sponsor, which must be an Australian legal entity or have an Australian sponsor responsible to the TGA. That decision is reviewed and confirmed by the HREC that approves the protocol. The CTA pathway, which requires prior regulatory approval, is designed primarily for high-risk or novel treatments where there is limited or no knowledge of the therapeutic good’s safety for use in humans.

All therapeutic goods must be approved for inclusion in the Australian Register of Therapeutic Goods (the “ARTG”) before it may be marketed (or imported, exported, manufactured or supplied) in Australia. In order to obtain registration of the product on the ARTG, the medical product’s sponsor must provide evidence supporting quality, safety, and efficacy, which may include clinical trials, and evidence demonstrating that the manufacture of the therapeutic product complies with all applicable principles of current good manufacturing practices (“cGMPs”).

Privacy and Security Laws

There are numerous U.S. federal and state laws and regulations related to the privacy and security of personal information, including health information. Among others, the federal Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information Technology for Economic and Clinical Health Act (HITECH), and their implementing regulations, (collectively referred to as “HIPAA”), establish privacy and security standards that limit the use and disclosure of protected health information (“PHI”) and require covered entities and business associates to implement administrative, physical, and technical safeguards to ensure the confidentiality, integrity and availability of individually identifiable health information in electronic form, among other requirements.

Violations of HIPAA may result in civil and criminal penalties. Companies subject to HIPAA must also comply with HIPAA’s breach notification rule which requires notification of affected patients and the U.S. Department of Health and Human Services (“HHS”), and in certain cases of media outlets, in the case of a breach of unsecured PHI. The regulations also require business associates of covered entities to notify the covered entity of breaches by the business associate. State attorneys general also have the right to prosecute HIPAA violations committed against residents of their states, and HIPAA standards have been used as the basis for the duty of care in state civil suits, such as those for negligence or recklessness in misusing personal information. In addition, HIPAA mandates that HHS conduct periodic compliance audits of HIPAA covered entities and their business associates for compliance.

Many states have laws that protect the privacy and security of sensitive and personal information, including health information, to which we are subject. These laws may be similar to or even more protective than HIPAA and other federal privacy laws. For example, California enacted the California Consumer Privacy Act (the “CCPA”), which creates individual privacy rights for California consumers and increases the privacy and security obligations of entities handling certain personal data. The CCPA went into effect on January 1, 2020, and the California Attorney General may bring enforcement actions for violations as of July 1, 2020. On January 1, 2023, California adopted the California Privacy Rights Act (“CPRA”), which amended the CCPA to enhance certain of the privacy protections for California consumers that were created by the CCPA. The enhancements include imposing additional compliance obligations for covered entities and removing certain exemptions previously available under the CCPA. While the California Attorney General retains civil enforcement authority, the CPRA also created the California Privacy Protection Agency to implement and enforce the law. Since the CCPA, many other states have passed or are considering passing similar state privacy laws.

We may be subject to other state and federal privacy laws, including laws that prohibit unfair privacy and security practices and deceptive statements about privacy and security, laws that place specific requirements on certain types of activities, such as data security and texting, and laws requiring holders of personal information to maintain safeguards and to take certain actions in response to a data breach.

European Union member states, the United Kingdom, Switzerland and other jurisdictions have also adopted data protection laws and regulations, which impose significant compliance obligations. The EU-wide General Data Protection Regulation (“GDPR”) became applicable on May 25, 2018, replacing the previous data protection laws issued by each EU Member State based on the Directive 95/46/EC. Unlike the Directive (which needed to be

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transposed at national level), the GDPR text is directly applicable in each EU member state, resulting in a more uniform application of data privacy laws across the EU. The GDPR imposes onerous accountability obligations, requiring data controllers and processors to maintain a record of their data processing and policies. It requires data controllers to be transparent and disclose to data subjects (in a concise, intelligible and easily accessible form) how their personal information is to be used, imposes limitations on retention of information, increases requirements pertaining to pseudonymized (i.e., key-coded) data, introduces mandatory data breach notification requirements and sets higher standards for data controllers to demonstrate that they have obtained valid consent for certain data processing activities. Fines for non-compliance with the GDPR are significant—the greater of EUR 20 million or 4% of global turnover. The GDPR provides that EU Member States may introduce further conditions, including limitations, to the processing of genetic, biometric or health data. In the UK, the UK General Data Protection Regulation (the “UK GDPR”) came into effect on January 1, 2021. Similar to the GDPR, the UK GDPR sets out the key principles, rights, and obligations for most processing of personal data in the UK. The Data Protection Act of 2018, which came into effect on May 25, 2018 and was amended on January 1, 2021, works alongside and supplements the UK GDPR.

U.S. Healthcare Reform

Changes in healthcare policy could increase our costs and subject us to additional regulatory requirements that may interrupt commercialization of our products. By way of example, the Patient Protection and Affordable Care Act (“PPACA”) substantially changed the way healthcare is financed by both governmental and private insurers, and significantly impacted the pharmaceutical, medical device and biologics industries, among others.

Since its enactment, there have been judicial and Congressional challenges to certain aspects of PPACA, and there may be additional amendments to PPACA in the future. For example, in 2017, Congress enacted the Tax Cuts and Jobs Act, which eliminated the tax-based shared responsibility payment imposed by PPACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year that is commonly referred to as the “individual mandate.”

On August 16, 2022, the Inflation Reduction Act of 2022 (the “IRA”), was passed, which among other things, allows for the Centers for Medicare & Medicaid Services (“CMS”) to negotiate prices for certain single-source drugs and biologics reimbursed under Medicare Part B and Part D, beginning with 10 high-cost drugs paid for by Medicare Part D starting in 2026, followed by 15 Part D drugs in 2027, 15 Part B or Part D drugs in 2028, and 20 Part B or Part D drugs in 2029 and beyond. The legislation subjects drug manufacturers to civil monetary penalties and a potential excise tax for failing to comply with the legislation by offering a price that is not equal to or less than the negotiated “maximum fair price” under the law or for taking price increases that exceed inflation. The legislation also caps Medicare beneficiaries’ annual out-of-pocket drug expenses at $2,000. The effect of the IRA on our business is not yet known.

There will continue to be proposals by legislators at both the federal and state levels, regulators and third-party payors to reduce costs while expanding individual healthcare benefits. Certain of these changes could impose additional limitations on the prices we will be able to charge and/or patients’ willingness to pay for our products. While in general it is too early to predict what effect, if any, any future healthcare reform legislation or policies will have on our business, current and future healthcare reform legislation and policies could have a material adverse effect on our business and prospects.

Pricing and Reimbursement

In the United States and markets in other countries, sales of any products for which we receive regulatory approval for commercial sale will depend in part on the availability of reimbursement from third-party payors. Third-party payors include government health administrative authorities, managed care providers, private health insurers, and other organizations. These third-party payors are increasingly challenging the price and examining the cost-effectiveness of medical products and services. In addition, significant uncertainty exists as to the reimbursement status of newly approved healthcare products, and efforts are underway to reduce the cost of medical products and services overall. We may need to conduct expensive studies in order to demonstrate the cost-effectiveness of our products. Our current and any future product candidates may not be considered cost-effective.

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Decisions regarding the extent of coverage and amount of reimbursement to be provided are made on a plan-by-plan basis. One third-party payor’s decision to cover a particular product does not ensure that other payors will also provide coverage for the product. Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to realize an appropriate revenue level. Future legislation could limit payments for our current and any future product candidates.

The U.S. government, state legislatures and foreign governments have shown significant interest in implementing cost containment programs to limit the growth of government-paid health care costs, including price controls, restrictions on reimbursement and requirements for substitution of less costly products. Adoption of government controls and measures, and tightening of restrictive policies in jurisdictions with existing controls and measures, could limit payments for our products. The marketability of any products for which we receive regulatory approval for commercial sale may suffer if the government and third-party payors fail to provide adequate coverage and reimbursement. In addition, an increasing emphasis on managed care in the United States has increased and will continue to increase the pressure on medical product and service pricing.

Anti-Kickback and False Claims Laws

In the United States, the research, manufacturing, distribution, sale and promotion of pharmaceutical products and devices are subject to regulation by various federal, state and local authorities in addition to the FDA, including CMS, other divisions of HHS (e.g., the Office of Inspector General), the U.S. Department of Justice, state Attorneys General, and other federal, state and local government agencies. For example, sales, marketing and scientific/educational grant programs must comply with the Federal Food, Drug, and Cosmetic Act, the Anti-Kickback Statute, as amended, the False Claims Act, as amended, the privacy regulations promulgated under HIPAA, and similar state laws. If products are made available to authorized users of the Federal Supply Schedule of the General Services Administration, additional laws and requirements apply. All of these activities are also potentially subject to federal and state consumer protection and unfair competition laws.

As noted above, in the United States, we are subject to complex laws and regulations pertaining to healthcare “fraud and abuse,” including, but not limited to, the federal Anti-Kickback Statute, the federal False Claims Act, and other state and federal laws and regulations. The Anti-Kickback Statute makes it illegal for any person, including a biological product manufacturer (or a party acting on its behalf) to knowingly and willfully solicit, receive, offer, or pay any remuneration that is intended to induce the referral of business, including the purchase or order of an item for which payment may be made under a federal healthcare program, such as Medicare or Medicaid. Violations of this law are punishable by up to five years in prison, criminal fines, administrative civil money penalties, and exclusion from participation in federal healthcare programs. In addition, many states have adopted laws similar to the Anti-Kickback Statute. Some of these state prohibitions apply to the referral of patients for healthcare services reimbursed by any insurer, not just federal healthcare programs such as Medicare and Medicaid. Due to the breadth of these federal and state anti-kickback laws and the potential for additional legal or regulatory change in this area, it is possible that our sales and marketing practices and/or our relationships with physicians might be challenged under anti-kickback laws, which could harm us. Because we plan to commercialize products that could be reimbursed under a federal healthcare program and other governmental healthcare programs, we plan to develop a comprehensive compliance program that establishes internal controls to facilitate adherence to the rules and program requirements to which we are subject.

The federal False Claims Act prohibits anyone from, among other things, knowingly presenting, or causing to be presented, for payment to federal programs (including Medicare and Medicaid) claims for items or services, including pharmaceutical products, that are false or fraudulent. Although we would not submit claims directly to payers, manufacturers can be held liable under these laws if they are deemed to “cause” the submission of false or fraudulent claims by, for example, providing inaccurate billing or coding information to customers or promoting a product off-label. In addition, our activities relating to the reporting of wholesaler or estimated retail prices for our products, the reporting of prices used to calculate Medicaid rebate information and other information affecting federal, state, and third-party reimbursement for our products, and the sale and marketing of our products, are subject to scrutiny under this law. For example, pharmaceutical companies have been prosecuted under the federal False Claims Act in connection with their off-label promotion of drugs. Penalties for a False Claims Act violation include three times the actual damages sustained by the government, plus mandatory civil penalties for each separate

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false claim, the potential for exclusion from participation in federal healthcare programs, and, although the federal False Claims Act is a civil statute, conduct that results in a False Claims Act violation may also implicate various federal criminal statutes. If the government were to allege that we were, or convict us of, violating these false claims laws, we could be subject to a substantial fine and may suffer a decline in our stock price. In addition, private individuals have the ability to bring actions under the federal False Claims Act and certain states have enacted laws modeled after the federal False Claims Act.

There are also an increasing number of state laws that require manufacturers to make reports to states on pricing and marketing information. Many of these laws contain ambiguities as to what is required to comply with the laws. In addition, a provision of PPACA, referred to as the Sunshine Act, requires pharmaceutical product manufacturers to track and report to the federal government certain payments or other transfers of value made to physicians, registered nurses and teaching hospitals, among others, in the previous calendar year. These laws may affect our sales, marketing, and other promotional activities by imposing administrative and compliance burdens on us. In addition, given the lack of clarity with respect to these laws and their implementation, our reporting actions could be subject to the penalty provisions of the pertinent state and federal authorities.

Other Federal Healthcare Fraud and Abuse Laws

We may also be subject to other federal healthcare fraud and abuse laws, including provisions of HIPAA, which prohibit knowingly and recklessly executing a scheme or artifice to defraud any healthcare benefit program, including private payors, as well as knowingly and willfully falsifying, concealing or covering up a material fact by any trick, scheme or device or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services. A violation of this statute is a felony and may result in fines, imprisonment or exclusion from government-sponsored programs. Similar to the federal Anti-Kickback Statute, a person or entity no longer needs to have actual knowledge of this statute or specific intent to violate it in order to have committed a violation.

Foreign Corrupt Practices Act

The Foreign Corrupt Practices Act (the “FCPA”), prohibits U.S. businesses and their representatives from offering to pay, paying, promising to pay or authorizing the payment of money or anything of value to a foreign official in order to influence any act or decision of the foreign official in his or her official capacity or to secure any other improper advantage in order to obtain or retain business. The FCPA also obligates companies whose securities are listed in the United States to comply with accounting provisions requiring us to maintain books and records, which in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the corporation, including international subsidiaries, if any, and to devise and maintain a system of internal accounting controls sufficient to provide reasonable assurances regarding the reliability of financial reporting and the preparation of financial statements. The scope of the FCPA includes interactions with certain healthcare professionals in many countries.

Human Capital

As of March 1, 2026, we had fifteen full-time employees and no part-time employees. None of these employees are represented by labor unions or covered by collective bargaining agreements. We believe that our employee relations are good.

Culture is a critical element in the management of our organization. Our talented employees are focused on driving our business with the foundation for all our efforts being to advance medicines for solid tumors. Our goal is that each colleague feels a deep connection to what they do, loves coming to work, and is aligned to our mission.

Culture begins with our hiring process and continues throughout an employee’s time with Context. We support our colleagues with a comprehensive offering of competitive pay and benefits.

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Corporate Information

We were incorporated under the laws of the State of Delaware in April 2021. Our corporate office is located at 2001 Market Street, Suite 3915, Unit #15, Philadelphia, PA 19103. Our telephone number is (267) 225-7416. We maintain an Internet website at www.contexttherapeutics.com. The information contained on our website is not incorporated by reference into this Form 10-K.

We make available free of charge under the “Investors & News” — “Financials” — “SEC Filings” section of our website all of our filings with the SEC, including our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements and amendments to such documents, each of which is provided on our website as soon as reasonably practicable after we electronically file or furnish, as applicable, the information with the SEC.

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Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. You should consider carefully the risks and uncertainties described below, together with general economic and business risks and all of the other information contained in this Annual Report on Form 10-K, including the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our financial statements and related notes, before making a decision to invest in our common stock. Our business, results of operations, financial condition or prospects could also be harmed by risks and uncertainties that are not presently known to us or that we currently believe are not material. If any of the risks actually occur, our business, results of operations, financial condition and prospects could be materially and adversely affected. In that event, the market price of our common stock could decline, and you could lose all or part of your investment. This Annual Report on Form 10-K also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward-looking statements as a result of specific factors, including the risks described below. See "Note Regarding Forward-Looking Statements."

Risks Related to Our Business and Industry

We have never been profitable and may never achieve or maintain profitability.

We have not commercialized any products and have yet to generate any revenue from product sales. The amount of our future net losses will depend, in part, on our expenses and our ability to generate revenues. Our current and any future product candidates will require substantial additional development time and resources before we may realize revenue from product sales, if at all. We expect to continue to incur significant expenses and operating losses for the foreseeable future. We anticipate that our expenses will increase substantially if and as we:

•continue our current research and development programs, including conducting laboratory, preclinical and clinical studies for product candidates;

•continue and initiate clinical trials for product candidates;

•seek to identify, assess, acquire or develop additional research programs or product candidates;

•maintain, expand and protect our intellectual property portfolio;

•seek marketing approvals for any product candidates that may successfully complete development;

•establish a sales, marketing and distribution infrastructure to commercialize any products that may obtain marketing approval;

•further develop and refine the manufacturing process for our current and any future product candidates;

•change or add additional manufacturers or suppliers of pharmaceutical or biological materials or product candidates;

•acquire or in-license other technologies;

•seek to attract and retain new and existing personnel; and

•expand our facilities.

We recently began our clinical trial for CTIM-76 and CT-95 and no clinical studies have begun on CT-202. It will be several years, if ever, before we obtain regulatory approval for a therapeutic product candidate, at which time any revenues for such product candidate will depend upon many factors, including market conditions, costs and effectiveness of manufacturing, sales, marketing and distribution operations related to such product candidate, the scope of intellectual property protection for such product candidate, and the terms of any collaboration or other strategic arrangement we may have with respect to such product candidate and levels of reimbursement from third-party payors.

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If we are unable to develop and commercialize one or more product candidates either alone or with collaborators, including through the potential out-licensing of our product candidates, or if revenues from any product candidate that receives marketing approval or is commercialized are insufficient, we may not achieve profitability or sustain profitability, which would have an adverse effect on the value of our common stock.

We will need to raise additional funding, which may not be available on acceptable terms, or at all. Failure to obtain this necessary capital when needed may force us to delay, limit or terminate our product development efforts or other operations.

The continuation of our business is dependent upon raising additional capital. We will need additional funding to meet our operational needs and capital requirements for clinical trials, other research and development expenditures, and general and administrative expenses. We currently have no credit facility or committed sources of capital.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our operations through a combination of equity offerings, debt financings, collaborations, strategic transactions and/or marketing, distribution or licensing arrangements. There can be no assurances that our plans to obtain additional capital will be successful on the terms or timeline we expect, or at all. If these efforts are unsuccessful, we may be required to significantly curtail or discontinue operations or, if available, to obtain funds through financing transactions with unfavorable terms.

If we are unable to raise substantial additional capital on acceptable terms, or at all, we may be forced to delay, reduce or eliminate some or all of our research programs, product development activities and commercialization efforts.

The process of identifying product candidates and conducting preclinical and clinical trials is time consuming, expensive, uncertain and takes years to complete. Our operations have consumed substantial amounts of cash since inception. We expect our expenses to increase in connection with our ongoing activities, particularly as we identify, continue the research and development of, initiate clinical trials of, and seek marketing approval for, product candidates. Our future funding requirements, both near and long-term, will depend on many factors, including, but not limited to:

•initiation, progress, timing, costs and results of preclinical studies and clinical trials, including patient enrollment in such trials, for CTIM-76, CT-95, CT-202 or any other future product candidates;

•clinical development plans we have established and may establish for CTIM-76, CT-95, CT-202 and any other future product candidates;

•obligation to make milestone, royalty and non-royalty sublicense receipt payments to third-party licensors, if any, under our licensing agreements;

•number and characteristics of product candidates that we discover or in-license and develop;

•outcome, timing and cost of regulatory review by the FDA and comparable foreign regulatory authorities, including the potential for the FDA or comparable foreign regulatory authorities to require that we perform more studies than those that we currently expect;

•costs of filing, prosecuting, defending and enforcing any patent claims and maintaining and enforcing other intellectual property rights;

•effects of competing technological and market developments;

•costs and timing of the implementation of commercial-scale manufacturing activities; and

•costs and timing of establishing sales, marketing and distribution capabilities for any product candidates for which we may receive regulatory approval.

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Adequate additional financing may not be available to us on acceptable terms, or at all. If we are unable to obtain sufficient funding on a timely basis or on favorable terms, we may be required to significantly delay, reduce or eliminate one or more of our research or product development programs and/or commercialization efforts or we might have to obtain funds through arrangements, such as selling or out-licensing our product candidates, with collaborative partners or others that may require us to relinquish rights to our technologies or product candidates that we otherwise would not relinquish. We may also be unable to expand our operations or otherwise capitalize on business opportunities as desired. Any of these events could materially adversely affect our financial condition and business prospects.

If we are not able to successfully integrate recent and future acquisitions, our management’s attention could be diverted, and efforts to integrate future acquisitions could consume significant resources.

Our obtainment of the rights to CT-202 and the acquisition of CT-95, and any other future acquisition that we may undertake, involve risks related to the integration of the acquired assets into the Company after the acquisition is completed. These risks include delays in development timelines, increased expenses, and assumption of undisclosed liabilities.

We have a limited operating history, which makes it difficult to evaluate our current business and future prospects and may increase the risk of your investment.

We are a biopharmaceutical company with a limited operating history. We were founded in 2015 and spent the first three years of our company’s history developing and refining our therapeutic approach, and only since then have we focused our efforts on advancing the development of product candidates.

Investment in biopharmaceutical product development is a highly speculative endeavor and entails substantial upfront capital expenditures. There is significant risk that any product candidate will fail to demonstrate adequate efficacy or an acceptable safety profile, obtain any required regulatory approvals or become commercially viable. Our product candidates and the therapeutic approach we are using are new and unproven. We have not demonstrated an ability to successfully complete any clinical trials, obtain any required marketing approvals, manufacture products, conduct sales, marketing and distribution activities, or arrange for a third party to do any of the foregoing on our behalf.

Consequently, any predictions made about our future success or viability may not be as accurate as they could be if we had a history of successfully developing and commercializing products. Our limited operating history, particularly in light of the rapidly evolving nature of the biopharmaceutical industries and the cancer therapeutics field, may make it difficult to evaluate our technology and business prospects or to predict our future performance.

We may expend our limited resources pursuing particular research programs or product candidates that may be less successful or profitable than other programs or product candidates.

Research programs to identify new product candidates require substantial technical, financial, and human resources. We may focus our efforts and resources on potential programs or product candidates that ultimately prove to be unsuccessful. The successful completion of a clinical trial with regard to any of our product candidates is not assured despite the expenditure of significant resources in pursuit of their development, and our spending on current and future research and development programs and product candidates may not yield any commercially viable products.

Additionally, if we do not accurately evaluate the commercial potential or target market for a particular product candidate, we may relinquish valuable rights to that product candidate through collaboration, licensing or other strategic arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights to such product candidate.

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Fluctuating foreign exchange rates could increase our operating expenses and adversely affect our results of operations.

We have vendors located outside of the United States that provide services relating to the development and manufacture of our product candidates, and as a result, we have had and expect to continue to have more significant foreign currency risks related to our operating expenses denominated in currencies other than the U.S. dollar. A weakening U.S. dollar could increase our operating expenses, which would adversely impact our results of operations and financial position.

Inflation, geopolitical developments, global supply chain disruptions and public health concerns could adversely affect our business and results of operations.

While inflation in the United States has been relatively low in recent years, the economy in the United States has encountered a higher level of inflation since 2021. Inflation has raised our costs for commodities, labor, materials, and services and other costs required to grow and operate our business, and failure to secure these on reasonable terms may adversely impact our financial condition. Additionally, increases in inflation, along with geopolitical developments, global supply chain disruptions and public health concerns, have caused, and may in the future cause, global economic uncertainty and instability, which may make it more difficult or costly for us to secure additional financing or acquire the supplies necessary to run our clinical trials. A failure to adequately respond to these risks could have a material adverse impact on our financial condition, results of operations, or cash flows.

Changes in U.S. trade policy, including the imposition of tariffs and the resulting consequences, may have a material adverse impact on our business, financial condition, and results of operations.

The U.S. government has adopted new approaches to trade policy, and in some cases may renegotiate, or potentially terminate, certain existing bilateral or multi-lateral trade agreements. The U.S. government has also imposed tariffs on most foreign goods and has threatened to impose significant tariff increases or expand the tariffs to capture other countries and types of goods, including pharmaceutical products. Tariffs on imports from nations from whom we procure raw materials used in the manufacturing process, clinical supplies or other required products are likely to increase the difficulty and cost of our research and development, and/or could require us to incur significant costs to transition to alternative suppliers. Future tariff increases, expanding the tariffs to cover other countries or other changes in U.S. trade policy could exacerbate these challenges.

Further increasing uncertainty related to trade policies, on February 20, 2026, the U.S. Supreme Court ruled against the U.S. presidential administration’s use of tariffs under the International Emergency Economic Powers Act ("IEEPA"). However, the decision creates uncertainty related to various aspects of the tariffs previously collected under the IEEPA, and not all tariffs announced throughout 2025 were impacted by this U.S. Supreme Court decision. Additionally, in response to the U.S. Supreme Court ruling, the U.S. presidential administration imposed a new worldwide tariff effective for 150 days from February 24, 2026. The imposition of these new, worldwide tariffs, as well as the potential for further tariff actions by the U.S. presidential administration or others, represents a significant source of uncertainty.

In addition, in response to these tariffs, other countries have threatened, announced or implemented retaliatory tariffs on U.S. goods. Political tensions and uncertainty as a result of rapidly changing trade policies could reduce trade volume, investment, technological exchange, and other economic activities between major international economies, resulting in a material adverse effect on global economic conditions and the stability of global financial markets, which could in turn have a material adverse impact on our business, financial condition and results of operations.

Our governing documents designate the Court of Chancery of the State of Delaware as the sole and exclusive forum for certain types of state law actions and proceedings that may be initiated by our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees or agents.

Our amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative form, the Court of Chancery of the State of Delaware (or, if the Court of Chancery does

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not have jurisdiction, the United States District Court for the District of Delaware) will be the sole and exclusive forum for: (1) any derivative action or proceeding brought on our behalf; (2) any action asserting a claim of breach of a fiduciary duty or other wrongdoing by any of our directors, officers, employees or agents to us or our stockholders; (3) any action asserting a claim against us arising pursuant to any provision of the General Corporation Law of the State of Delaware or our amended and restated certificate of incorporation or amended and restated bylaws; (4) any action to interpret, apply, enforce or determine the validity of our amended and restated certificate of incorporation or amended and restated bylaws; or (5) any action asserting a claim governed by the internal affairs doctrine. In addition, our amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the federal district courts of the United States of America shall, to the fullest extent permitted by law, be the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act of 1933, as amended (the “Securities Act”). Notwithstanding the foregoing, the exclusive forum provision shall not apply to claims seeking to enforce any liability or duty created by the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

This choice of forum provision may limit our stockholders’ ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers, employees or agents, which may discourage such lawsuits against us and our directors, officers, employees and agents even though an action, if successful, might benefit our stockholders. Stockholders who do bring a claim in the Court of Chancery could face additional litigation costs in pursuing any such claim, particularly if they do not reside in or near Delaware. The Court of Chancery may also reach different judgments or results than would other courts, including courts where a stockholder considering an action may be located or would otherwise choose to bring the action, and such judgments or results may be more favorable to us than to our stockholders. Alternatively, if a court were to find this provision inapplicable to, or unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could have a material adverse effect on our business, financial condition or results of operations.

Risks Related to our Product Candidates

Our business is dependent on the successful development, regulatory approval and commercialization of our therapeutic product candidates, CTIM-76, CT-95 and CT-202, which are in the early stages of development.

We have no products approved for sale. The success of our business, including our ability to finance our Company and generate any revenue in the future, will primarily depend on the successful development, regulatory approval and commercialization of CTIM-76, CT-95 and CT-202, which may never occur.

In the future, we may also become dependent on other product candidates that we may develop or acquire; however, not all of our product candidates have been tested in humans and given our early stage of development, it may be many years, if at all, before we have demonstrated the safety and efficacy of a cancer treatment sufficient to warrant approval for commercialization.

We have not previously submitted an NDA or BLA to the FDA, or similar regulatory approval filings to comparable foreign authorities, for any product candidate, and we cannot be certain that our current or any future product candidates will be successful in clinical trials or receive regulatory approval. Further, any future product candidates may not receive regulatory approval even if they are successful in clinical trials. If we do not receive regulatory approvals for our current or future product candidates, we may not be able to continue our operations. Even if we successfully obtain regulatory approvals to market a product candidate, our revenue will be dependent, in part, upon the size of the markets in the territories for which we gain regulatory approval and have commercial rights. If the markets or patient subsets that we are targeting are not as significant as we estimate, we may not generate significant revenues from sales of such products, if approved.

We plan to seek regulatory approval to commercialize our current and any future product candidates both in the United States and in selected foreign countries. While the scope of regulatory approval generally is similar in other countries, in order to obtain separate regulatory approval in other countries, we must comply with numerous and varying regulatory requirements of such countries regarding safety and efficacy. Other countries also have their own regulations governing, among other things, clinical trials and commercial sales, as well as pricing and distribution of

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our current and any future product candidates, and we may be required to expend significant resources to obtain regulatory approval and to comply with ongoing regulations in these jurisdictions.

The clinical and commercial success of our current and any future product candidates will depend on a number of factors, including the following:

•our ability to raise additional required capital on acceptable terms, or at all;

•our ability to complete IND and BLA-enabling studies and successfully submit an IND and BLA;

•timely completion of our preclinical studies and clinical trials, which may be slower or cost more than we currently anticipate and will depend substantially upon the performance of third-party contractors;

•whether we are required by the FDA or similar foreign regulatory agencies to conduct additional clinical trials or other studies beyond those planned to support approval of our product candidates;

•the results of our clinical trials;

•acceptance of our proposed indications and primary endpoint assessments relating to the proposed indications of our product candidates by the FDA and similar foreign regulatory authorities;

•our ability to consistently provide for manufacturing of our product candidates or future approved products, if any, on a timely basis;

•our ability, and the ability of any third parties with whom we contract, to remain in good standing with regulatory agencies and to develop, validate and maintain commercially viable manufacturing processes that are compliant with cGMPs;

•our ability to demonstrate to the satisfaction of the FDA and similar foreign regulatory authorities the safety, efficacy and acceptable risk-benefit profile of our product candidates;

•the prevalence, duration and severity of any side effects or other safety issues experienced with our product candidates or future approved products, including when tested or used in combination with other approved products or product candidates;

•the timely receipt of necessary marketing approvals from the FDA and similar foreign regulatory authorities;

•achieving and maintaining, and, where applicable, ensuring that our third-party contractors achieve and maintain, compliance with our contractual obligations and with all regulatory requirements applicable to our product candidates or any future product candidates or future approved products, if any;

•the willingness of physicians, operators of hospitals and clinics and patients to utilize or adopt our product candidates or any future product candidates;

•our ability to successfully develop a commercial strategy and thereafter commercialize our current or any future product candidates in the United States and internationally, if approved for marketing, sale and distribution in such countries and territories, whether alone or in collaboration with others, including through the potential out-licensing of our product candidates;

•competition from other applicants’ products authorized for marketing before or after we receive regulatory authorization, if any, for our product candidates;

•the availability of coverage and adequate reimbursement from managed care plans, private insurers, government payors (such as Medicare and Medicaid) and other third-party payors for any of our product candidates that may be approved;

•the convenience of our treatment or dosing regimen;

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•acceptance by physicians, payors and patients of the benefits, safety and efficacy of our current or any future product candidates, if approved, including relative to alternative and competing treatments;

•patient demand for our current or future product candidates, if approved;

•our ability to establish and enforce intellectual property rights in and to our product candidates; and

•our ability to avoid third-party patent interference, intellectual property challenges or intellectual property infringement claims.

These factors, many of which are beyond our control, could cause us to experience significant delays or an inability to obtain regulatory approvals or commercialize our current or future product candidates. Even if regulatory approvals are obtained, we may never be able to successfully commercialize any product candidates. Accordingly, we cannot provide assurances that we will be able to generate sufficient revenue through the sale of our product candidates or any future product candidates to continue our business or achieve profitability.

Results of preclinical studies, early clinical trials or analyses may not be indicative of results obtained in later trials.

The results of preclinical studies, early clinical trials or analyses of a product candidate may not be predictive of the results of later-stage clinical trials. A product candidate in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of companies in the biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. In addition, conclusions based on promising data from analyses of clinical results may be shown to be incorrect when implemented in prospective clinical trials. Even if our future clinical trials are completed as planned, we cannot be certain that their results will support the safety and efficacy sufficient to obtain regulatory approval.

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

From time to time, we may publish interim “top-line” or preliminary data from our clinical studies. Interim or preliminary data from clinical trials that we may complete are subject to the risk that one or more of the clinical outcomes may materially change as patient enrollment continues and more patient data become available. Preliminary or “top-line” data also remain subject to audit and verification procedures that may result in the final data being materially different from the preliminary data we previously published. As a result, interim and preliminary data should be viewed with caution until the final data are available. Adverse differences between preliminary or interim data and final data could significantly harm our business prospects.

Any product candidate, whether used alone or in combination with other approved products or product candidates, may cause serious adverse events or undesirable side effects, which may delay or prevent marketing approval, or, if approved, require it to be taken off the market, require it to include safety warnings or otherwise limit its sales.

Serious adverse events or undesirable side effects caused by a product candidate, whether used alone or in combination with other approved products or product candidates, could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA or other comparable foreign authorities. Results of any clinical trial we conduct could reveal a high and unacceptable severity and prevalence of side effects or unexpected characteristics. For example, certain patients treated with CTIM-76 or CT-95 experienced adverse events that included, but were not limited to, cytokine release syndrome, fatigue, liver enzyme elevations and nausea.

If unacceptable side effects arise in the development of any product candidate, we, the FDA or comparable foreign regulatory authorities, the institutional review boards (“IRBs”) at the institutions in which our studies are conducted, or the data safety monitoring board, if constituted for our clinical trials, could recommend a suspension or termination of our clinical trials, or the FDA or comparable foreign regulatory authorities could order us to cease

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further development of or deny approval of a product candidate for any or all targeted indications. In addition, drug-related side effects could affect patient recruitment or the ability of enrolled patients to complete a trial or result in potential product liability claims. In addition, these side effects may not be appropriately recognized or managed by the treating medical staff. We expect to have to train medical personnel using a product candidate, whether used alone or in combination with other approved products or product candidates, to understand the side effect profiles for our clinical trials and upon any commercialization of any product candidate. Inadequate training in recognizing or managing the potential side effects of any product candidate, whether used alone or in combination with other approved products or product candidates, could result in patient injury or death. Any of these occurrences may harm our business, financial condition and prospects significantly.

Additionally, if any product candidate receives marketing approval, and we or others later identify undesirable side effects caused by such product, whether used alone or in combination with other approved products or product candidates, a number of potentially significant negative consequences could result, including:

•regulatory authorities may withdraw approvals of such product;

•regulatory authorities may require additional warnings on the label, such as a “black box” warning or contraindication;

•additional restrictions may be imposed on the marketing of the particular product or the manufacturing processes for the product or any component thereof;

•we may be required to implement a Risk Evaluation and Mitigation Strategy (“REMS”), or create a medication guide outlining the risks of such side effects for distribution to patients;

•we could be sued and held liable for harm caused to patients;

•the product may become less competitive; and

•our reputation may suffer.

Any of these events could prevent us from achieving or maintaining market acceptance of a product candidate, if approved, and could significantly harm our business, results of operations and prospects.

We may find it difficult to enroll patients in our clinical trials. If we encounter difficulties or delays enrolling patients in our clinical trials, our clinical development activities could be delayed or otherwise adversely affected.

Successful and timely completion of clinical trials will require that we identify and enroll a specified number of patients for each of our clinical trials. We may not be able to initiate or continue clinical trials for our current or any future product candidates if we are unable to identify and enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or similar regulatory authorities outside the United States. Subject enrollment, a significant factor in the timing of clinical trials, is affected by many factors, including the size and characteristics of the patient population, the proximity of patients to clinical sites, the eligibility and exclusion criteria for the trial, the design of the clinical trial, the ability to obtain and maintain informed consents, the risk that enrolled patients will not complete a clinical trial, our ability to recruit clinical trial investigators with the appropriate competencies and experience, and competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages and risks of the product candidate being studied in relation to other available therapies, including any new products that may be approved for the indications we are investigating as well as any product candidates under development. We will be required to identify and enroll a sufficient number of patients for each of our clinical trials and monitor such patients adequately during and after treatment. Potential patients for any planned clinical trials may not be adequately diagnosed or identified with the diseases that we are targeting, which could adversely impact the outcomes of our trials and could have safety concerns for the potential patients. Potential patients for any planned clinical trials may also not meet the entry criteria for such trials.

Additionally, other pharmaceutical companies targeting these same diseases are recruiting clinical trial patients from these patient populations, which may make it more difficult to fully enroll our clinical trials. The process of finding and recruiting patients may prove costly. The timing of our clinical trials depends, in part, on the speed at which we can recruit patients to participate in our trials, as well as completion of required follow-up periods. The

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eligibility criteria of our clinical trials, once established, may further limit the pool of available trial participants. If patients are unwilling or unable to participate in our trials for any reason, including the existence of concurrent clinical trials for similar target populations, the availability of approved or authorized therapies, or the fact that enrolling in our trials may prevent patients from taking a different product, or we otherwise have difficulty enrolling a sufficient number of patients, the timeline for recruiting patients, conducting trials, and obtaining regulatory approval of our product candidates may be delayed. Our inability to enroll a specified number of patients for any of our future clinical trials would result in significant delays or may require us to abandon one or more clinical trials altogether.

We cannot assure you that our assumptions used in determining expected clinical trial timelines are correct or that we will not experience delays or difficulties in enrollment, or be required by the FDA or similar regulatory authorities outside the United States to increase our enrollment, which would result in the delay of completion of such trials beyond our expected timelines.

The success of our business depends primarily upon our ability to identify, develop and commercialize products using our proprietary technologies.

We have initiated Phase 1 clinical trials for CTIM-76 and CT-95 in 2025 and are planning for the initiation of a first-in-human trial for CT-202. We may be unsuccessful in advancing any product candidate during clinical development or otherwise into clinical development or in identifying and developing additional product candidates.

Our ability to identify and develop product candidates is subject to the numerous risks associated with preclinical, clinical and early stage biopharmaceutical development activities, including that:

•we may not be able to assemble sufficient resources to acquire or discover additional product candidates, including through the potential out-licensing of our product candidates;

•we may not be able to enter into collaborative arrangements to facilitate development of product candidates;

•competitors may develop alternatives that render our product candidates obsolete or less attractive;

•our product candidates may be covered by third parties’ patents or other exclusive rights;

•the regulatory pathway for a product candidate may be too complex, expensive or otherwise difficult to navigate successfully; or

•our product candidates may be shown to not be effective, have harmful side effects or otherwise pose risks not outweighed by such product candidate’s benefits or have other characteristics that may make the products impractical to manufacture, unlikely to receive any required marketing approval, unlikely to generate sufficient market demand or otherwise not achieve profitable commercialization.

Even if we do commence additional clinical trials of product candidates and continue to identify new product candidates, such product candidates may never be approved. Failure to successfully identify and develop new product candidates and obtain regulatory approvals for our product candidates would have a material adverse effect on our business and financial condition and could cause us to cease operations.

Our innovative therapy approach is based on novel ideas and technologies that are unproven and may not result in marketable products, which exposes us to unforeseen risks and makes it difficult for us to predict the time and cost of product development and potential for regulatory approval.

Our foundational science and product development approach are based on the selective targeting of solid-tumor cancers to elicit meaningful anticancer activity. We believe that this approach may offer an improved therapeutic effect by redirecting T-cell-mediated lysis toward malignant cells expressing the tumor antigens that are targeted (CLDN6, MSLN or Nectin-4). However, this approach to treating cancer is novel and the scientific research that forms the basis of our efforts to develop therapeutics that effectively inhibit membrane protein targets is both preliminary and limited.

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As such, we cannot assure you that even if we are able to develop cancer therapeutic candidates capable of redirecting T-cell-mediated lysis toward malignant cells, that such therapy would safely and effectively treat cancers. We may spend substantial funds attempting to develop this approach and never succeed in developing a marketable therapeutic.

Furthermore, no regulatory authority has granted approval for a T cell redirecting cancer therapy based on a selective targeting of CLDN6, MSLN or Nectin-4 positive cancers. As such, we believe the FDA has limited experience with evaluating our approach, which may increase the complexity, uncertainty and length of the regulatory approval process for our product candidates. We may never receive approval to market and commercialize any product candidate. Even if we obtain regulatory approval, the approval may be for targets, disease indications, lines of therapy or patient populations that are not as broad as we intended or desired or may require labeling that includes significant use or distribution restrictions or safety warnings.

If a product candidate does not achieve projected development milestones or commercialization in the announced or expected timeframes, the further development or commercialization of such product candidate may be delayed, and our business will be harmed.

We sometimes estimate, and may in the future estimate, the timing of the accomplishment of various scientific, clinical, manufacturing, regulatory and other product development objectives. These milestones may include our expectations regarding the commencement or completion of scientific studies or clinical trials, the submission of regulatory filings, the receipt of marketing approval or the realization of other commercialization objectives.

The achievement of many of these milestones may be outside of our control. All of these milestones are based on a variety of assumptions, including assumptions regarding capital resources, constraints and priorities, progress of and results from development activities and the receipt of key regulatory approvals or actions, any of which may cause the timing of achievement of the milestones to vary considerably from our estimates. For example, in 2025 we adjusted our guidance regarding the anticipated dosing of the first patient in the CT-95 Phase 1 trial.

If we or our collaborators fail to achieve announced milestones in the expected timeframes, the commercialization of the affected product candidate may be delayed, our credibility may be undermined, our business and results of operations may be harmed, and the price of our common stock may decline.

Product liability lawsuits against us could cause us to incur substantial liabilities and could limit commercialization of any products that we develop alone or with collaborators.

We face an inherent risk of product liability and professional indemnity exposure related to the testing in clinical trials of our product candidates. We will face an even greater liability risk if we commercially sell any products that we or our collaborators may develop for human use.

Manufacturing defects, errors in product distribution or storage processes, improper administration or application and known or unknown side effects of product usage may result in liability claims against us or third parties with which we have relationships. These actions could include claims resulting from acts by our collaborators, licensees and subcontractors over which we have little or no control. For example, our liability could be sought by patients participating in clinical trials for potential therapeutic product candidates as a result of unexpected side effects, improper product administration or the deterioration of a patient’s condition, patient injury or even death.

Criminal or civil proceedings might be filed against us by patients, regulatory authorities, biopharmaceutical companies and any other third party using or marketing any product candidates or products that we develop alone or with collaborators. On occasion, large judgments have been awarded in class action lawsuits based on products that had unanticipated adverse effects. If we cannot successfully defend ourselves against claims that product candidates or products we develop alone or with collaborators caused harm, we could incur substantial liabilities.

Clinical development does not always fully characterize the safety and efficacy profile of a new medicine, and it is always possible that a drug or biologic, even after regulatory approval, may exhibit unforeseen side effects. If any

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product candidate were to cause adverse side effects during clinical trials or after approval, we may be exposed to substantial liabilities.

Product liability insurance coverage may not be adequate to cover all liabilities that we may incur. We anticipate that we will need to increase our insurance coverage when we expand our clinical trials and if we or our collaborators successfully commercialize any products.

We may be required by the FDA to obtain approval of a companion diagnostic in connection with approval of our current product candidates, and if we do not obtain, or face delays in obtaining, FDA approval of such companion diagnostic, we will not be able to commercialize such product candidate and our ability to generate revenue will be materially impaired.

According to FDA guidance, if the FDA determines that a companion diagnostic device is essential to the safe and effective use of a novel therapeutic product or indication, the FDA generally will not approve the therapeutic product or new therapeutic product indication if the companion diagnostic is not also approved or cleared for that indication. We have collaborated, and expect to continue to collaborate, with diagnostic companies during our clinical trial enrollment process to help identify patients with characteristics that we believe will be most likely to respond to our product candidates. If a satisfactory companion diagnostic is not commercially available in this situation, we may be required to develop or obtain such diagnostic, which would be subject to regulatory approval requirements. The process of obtaining or creating a diagnostic is time consuming and costly.

Companion diagnostics are developed in conjunction with clinical programs for the associated product candidate and are subject to regulation as medical devices by the FDA and comparable foreign regulatory authorities, and the FDA has generally required premarket approval of companion diagnostics for cancer therapies. The approval or clearance of a companion diagnostic as part of the therapeutic product’s further labeling limits the use of the therapeutic product to only those patients who express the specific characteristic that the companion diagnostic was developed to detect.

We and/or third-party collaborators may encounter difficulties in developing and obtaining approval or clearance for companion diagnostics. Any delay or failure by us or third-party collaborators to develop or obtain regulatory approval or clearance of a companion diagnostic could delay or prevent approval or continued marketing of the relevant product candidate. We or our collaborators may also experience delays in developing a sustainable, reproducible and scalable manufacturing process for the companion diagnostic or in transferring that process to commercial partners or negotiating insurance reimbursement plans, all of which may prevent us from completing our clinical trials or commercializing our product candidates, if approved, on a timely or profitable basis, if at all.

Fast track designation from the FDA may not actually lead to a faster development or regulatory review or approval process.

Investigational biological product candidates are eligible for fast track designation if they are intended to treat a serious or life-threatening disease or condition and demonstrate the potential to address unmet medical needs for the disease or condition. The sponsor of a fast track designated product candidate has opportunities for more frequent interactions with the applicable FDA review team during product candidate development.

Even if the FDA grants fast track designation to one of our product candidates, such designation may not result in a faster development process, review or approval compared to product candidates considered for approval under conventional FDA procedures, and the designation does not assure ultimate approval by the FDA. In addition, the FDA may later decide that the product candidate no longer meets the conditions for qualification and rescind the designation.

We may not be able to obtain or maintain orphan drug designation or exclusivity for our product candidates.

We may seek orphan drug designation in the U.S. and in the European Union for our product candidates. Upon receipt of FDA approval, orphan drug status would provide us with seven years of market exclusivity in the U.S. under the Orphan Drug Act. However, there is no guarantee that the FDA will grant orphan drug designation for any of our product candidates for any indication, which would make us ineligible for the additional exclusivity and other benefits of orphan drug designation. Moreover, there can be no assurance that another company also holding orphan

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drug designation for the same indication, or which may receive orphan drug designation in the future, will not receive approval prior to us, in which case our competitor would have the benefit of the seven years of market exclusivity, and we would be unable to commercialize our product for the same indication until the expiration of such seven-year period. Even if we are the first to obtain approval for the orphan drug indication, there are circumstances under which a competing product may be approved for the same indication during our seven-year period of exclusivity.

Under the Orphan Drug Act, the FDA may grant orphan drug designation to a drug intended to treat a rare disease or condition, which is generally a disease or condition that affects fewer than 200,000 individuals in the U.S. and for which there is no reasonable expectation that the cost of developing and making a drug available in the U.S. for this type of disease or condition will be recovered from sales of the product. Orphan drug designation must be requested before submitting a marketing application. After the FDA grants orphan drug designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan designation does not convey any advantage in or shorten the duration of regulatory review and approval process. In addition to the potential period of exclusivity, orphan designation makes a company eligible for grant funding of up to $0.4 million per year for four years to defray costs of clinical trial expenses, tax credits for clinical research expenses and potential exemption from the FDA application user fee. There can be no assurance that we will receive orphan drug designation for any of our drug candidates for any additional indications if we elect to seek such designation. Even if orphan designation is granted, it may be withdrawn by the FDA for non-compliance with regulations.

Risks Related to Our Organization, Structure and Operations

Our reliance on a central team consisting of a limited number of employees and consultants who provide various administrative, research and development, and other services across our organization presents operational challenges that may adversely affect our business.

CNTX US Equity

CNTX · 10-K · period ended 2025-12-31

Item 1. Business

Item 1A. Risk Factors

CNTX US Equity☆

CNTX · 10-K · period ended 2025-12-31

Item 1. Business

Item 1A. Risk Factors

CNTX US Equity