Ocular Therapeutix, Inc._December 31, 2025

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark One)

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

For the fiscal year ended December 31, 2025

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

For the transition period from to

Commission file number 001-36554

Ocular Therapeutix, Inc.

(Exact name of registrant as specified in its charter)

(State or other jurisdiction of (I.R.S. Employer

incorporation or organization) Identification No.)

15 Crosby Drive

(Address of principal executive offices) (Zip Code)

(781) 357-4000

(Registrant’s telephone number, including area code)

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

Common Stock, $0.0001 par value per share OCUL Nasdaq Global Market

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 such files). ⌧Yes◻ No

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

Large accelerated filer ☒ Accelerated filer ☐

Non-accelerated filer ☐ Smaller reporting company ☐

Emerging growth company ☐

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

Indicate by check mark whether the registrant 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 Exchange Act). ☐ Yes ☒ No

As of June 30, 2025, the aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant was approximately $1,604.7 million. The number of shares outstanding of the registrant’s class of common stock, as of February 2, 2026: 217,691,779

DOCUMENTS INCORPORATED BY REFERENCE

Part III of this Annual Report incorporates by reference information from the definitive Proxy Statement for the registrant’s 2026 Annual Meeting of Stockholders, which is expected to be filed with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year ended December 31, 2025.

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TABLE OF CONTENTS

PART I

Item 1. Business 5

Item 1A. Risk Factors 62

Item 1B. Unresolved Staff Comments 111

Item 1C. Cybersecurity 111

Item 2. Properties 112

Item 3. Legal Proceedings 112

Item 4. Mine Safety Disclosures 112

PART II

Item 6. [Reserved] 114

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 131

Item 8. Financial Statements and Supplementary Data 131

Item 9A. Controls and Procedures 132

Item 9B. Other Information 133

PART III

Item 10. Directors, Executive Officers and Corporate Governance 134

Item 11. Executive Compensation 135

Item 14. Principal Accountant Fees and Services 135

PART IV

Item 15. Exhibits and Financial Statement Schedules 136

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FORWARD-LOOKING STATEMENTS

● our commercialization efforts for our product DEXTENZA;

● the rate and degree of market acceptance and clinical utility of our products;

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● our intellectual property position;

● the impact of government laws and regulations; and

● our competitive position.

● Summary of Risks Related to our Business

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PART I

Item 1. Business

We are an integrated biopharmaceutical company committed to redefining the retina experience. AXPAXLI, also known as OTX-TKI, our investigational product candidate for retinal disease, is an axitinib intravitreal hydrogel based on our ELUTYX proprietary bioresorbable hydrogel-based formulation technology. AXPAXLI is currently being evaluated in a Phase 3 registrational program for wet age-related macular degeneration, or wet AMD, which we refer to as the SOL program. AXPAXLI is currently also being evaluated in a Phase 3 registrational program for diabetic retinal disease, including non-proliferative diabetic retinopathy, or NPDR, which we refer to as the HELIOS program.

We also leverage the ELUTYX technology in our commercial product DEXTENZA, a corticosteroid approved by the U.S. Food and Drug Administration, or FDA, for the treatment of ocular inflammation and pain following ophthalmic surgery in adults and pediatric patients and for the treatment of ocular itching associated with allergic conjunctivitis in adults and pediatric patients aged two years or older, and in our product candidate OTX-TIC, which is a travoprost intracameral hydrogel that has completed a Phase 2 clinical trial for the treatment of open-angle glaucoma, or OAG, or ocular hypertension, or OHT. We are currently evaluating next steps for the OTX-TIC program.

DEXTENZA and our product candidates in clinical development generally incorporate therapeutic agents that have previously received regulatory approval from the FDA, including small molecules, into ELUTYX, with the goal of providing local programmed release to tailor the duration and amount of the therapeutic agent to be delivered to the eye.

The hydrogel technology that underpins ELUTYX has been used in the human body since 1992 and has demonstrated its safety and effectiveness in over five million patients across eight FDA-approved treatments since that time. Our own approved product DEXTENZA, the first and only drug-eluting intracanalicular insert approved by the FDA, has been used in nearly 750,000 eyes since launch with reported adverse events in approximately 2 of every 10,000 patients. As a result, we believe that the ELUTYX technology is well tolerated.

We believe the ELUTYX technology can provide delivery solutions for durable therapies for wet AMD, diabetic retinal disease, including NPDR, diabetic macular edema, or DME, and proliferative diabetic retinopathy, or PDR, retinal vein occlusion, or RVO, and other diseases and conditions of the eye, such as glaucoma. Our ELUTYX-based products and product candidates are hydrogels with ester bonds that are hydrolyzed over time by aqueous or vitreous humor fluid within the eye. Unlike traditional implants, the ELUTYX-based hydrogel is not rigid, does not have a shell, and does not persist following dissolution of the active drug. The factors that regulate the bioresorption of our ELUTYX polymer are temperature and pH of the aqueous environment. As body temperature and pH of the human aqueous environment are within a typical range for humans, and since water levels in the aqueous or vitreous humor are more than sufficient to saturate our polymer matrix, we believe we can program our products and product candidates so that the polymer will be intact long-enough to deliver the active pharmaceutical ingredient and then be fully bioresorbed. We believe that the ELUTYX safety profile is further supported because ELUTYX does not create an acidic microenvironment, it is easily eliminated from the eye, does not leave behind harmful byproducts, and it has soft gel properties.

AXPAXLI is seeking to address segments of the exudative retinal diseases market, which in the aggregate is estimated to include up to 8.3 million patients in the United States by 2030 and accounted for approximately $9.4 billion in U.S. annual estimated revenues in 2025, according to the Market Scope 2025 Exudative Retinal Disease Pharmaceuticals Report, published in October 2025, or the Market Scope 2025 Retina Report.

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The following table summarizes the status of our key product candidates and development programs. We hold worldwide exclusive commercial rights to the core technology underlying all of our product candidates in development and have not granted commercial rights to any marketing partners other than a license agreement and collaboration with AffaMed Therapeutics Limited, or AffaMed, for the development and commercialization of DEXTENZA and OTX-TIC in certain geographies in Asia agreed to between the parties.

PIPELINE AT A GLANCE

Our Strategy

Our strategy is to redefine the retina experience by advancing AXPAXLI, our lead clinical asset, focusing specifically on our registrational programs for wet AMD and diabetic retinal disease, while we continue to build upon our experience in commercializing ophthalmology products. The key tactics of our strategy are:

●Advance our AXPAXLI registrational programs.

● Wet AMD:

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● Diabetic Retinal Disease:

● Scale up our commercialization and manufacturing capabilities.

●Advance pre-commercialization activities associated with AXPAXLI.

Clinical Portfolio

Retinal Diseases

Wet Aged-Related Macular Degeneration (Wet AMD)

Wet AMD is a serious disease of the central portion of the retina, known as the macula, an oval-shaped pigmented area that is responsible for detailed central vision and color perception. Wet AMD is characterized by abnormal new blood vessel formation, referred to as neovascularization, which results in blood vessel leakage and retinal distortion. If untreated, neovascularization in wet AMD patients typically results in formation of a scar under the macular region of the retina. The current standard of care for wet AMD is treatment with drugs that target vascular endothelial growth factor, or VEGF, one of several proteins involved in neovascularization and hyper-permeability of established and new blood vessels.

Wet AMD is the most common cause of visual impairment among patients over the age of 50 years in developed countries. According to the Market Scope 2025 Retina Report, there were approximately 14.8 million people globally and 1.7 million people in the United States who suffered from wet AMD in 2025, and this population is expected to grow at a 3.0% and 3.3% compound annual growth rate, or CAGR, respectively, through 2030.

The market for the treatment of wet AMD consists predominantly of five anti-VEGF, drugs, including four drugs that are approved for marketing and primarily prescribed for the treatment of wet AMD: Eylea and Eylea HD, marketed in the United States by Regeneron; Lucentis, marketed in the United States by Genentech; Vabysmo, marketed in the United States by Genentech, and one drug, bevacizumab, also known as Avastin, an anti-VEGF therapy approved for the treatment of certain cancers, which is used off-label for the treatment of wet AMD.

Diabetic Retinal Disease

Diabetic retinal diseases are an increasingly prevalent global health concern, driven by the rapidly rising number of individuals diagnosed with diabetes each year.

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Diabetic retinopathy, or DR, is the most common category of retinal diseases, affecting over an estimated 103 million people worldwide. DR is a progressive condition in which retinal blood vessels are damaged following a cascade of events triggered by chronically elevated levels of blood glucose. As many as half of all diabetic patients are expected to develop some form of DR in their lifetime. DR can progress from the non-proliferative stages, or the NPDR stages, to the proliferative stage, or the PDR stage, characterized by the growth of abnormal new blood vessels. The severity of DR is commonly assessed using an objective severity score based on graded retinal images, which is referred to as the diabetic retinopathy severity score, or DRSS. Based on third-party market research data, we estimate that fewer than 1% of the 6.3 million NPDR patients in the U.S. receive treatment today, despite the availability of anti-VEGF therapies approved for the indication, largely due to the burden of frequent injections.

DME is also a leading cause of vision loss in the working-age population. DME, the result of an accumulation of fluid in the macula that can afflict patients with diabetes, can occur at any stage of DR. In patients with DME, blood vessels in the eyes leak and bleed, and the retina starts to swell, which can cause vision loss or blindness. Anti-VEGF drugs are approved to treat DME, but these treatments typically require frequent intravitreal injections, placing a significant burden on patients and physicians alike. It is estimated that there were 6.3 million cases of NPDR and 1.7 million cases of DME in the United States in 2025 according to the Market Scope 2025 Retina Report, growing at a CAGR of 1.7% and 1.8%, respectively, through 2030.

The anti-VEGF market for the treatment of diabetic retinal disease consists predominantly of four drugs that are approved for different diabetic retinal disease indications (Lucentis, Eylea, Eylea HD, and Vabysmo). Avastin is also used off-label for the treatment of diabetic retinal disease.

Retinal Programs

AXPAXLI (axitinib intravitreal hydrogel)

Our product candidate AXPAXLI is an investigational, bioresorbable hydrogel implant, based on our ELUTYX technology, incorporating axitinib, a small molecule, multi-target, tyrosine kinase inhibitor, or TKI, with anti-angiogenic properties. AXPAXLI is delivered by intravitreal injection and is designed for a duration of six months or longer.

We believe axitinib is well-suited for use with our platform given its high potency, multi-target capability, and compatibility with a hydrogel vehicle. In the absence of a sophisticated drug delivery system, TKIs have been difficult to deliver to the eye for acceptable time frames at therapeutic levels without causing local and systemic toxicity due to low drug solubility, very short half-lives in solution, and off-target effects. We believe ELUTYX gives us potential advantages to address all three of these challenges. Our prolonged constant rate of axitinib delivery over a nine-to-twelve-month period could make it possible to reduce patients’ treatment burden by reducing the frequency of treatment for wet AMD.

We conducted the two Phase 1 trials of AXPAXLI for the treatment of wet AMD with different formulations of axitinib. We are currently conducting the SOL-1, SOL-R and HELIOS-3 trials, and we plan to conduct the SOL-X trial and, if needed, the HELIOS-2 trial with a 450 μg axitinib dose of AXPAXLI, or AXPAXLI 450 μg, which is a different formulation than we used in either of the two Phase 1 trials of AXPAXLI that we have completed for the treatment of wet AMD. This optimized configuration provides for an increased daily release of the drug and improved synchronization of axitinib drug release with hydrogel bioresorption.

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Wet Age-Related Macular Degeneration (Wet AMD)

Highlights

Our wet AMD registrational program for AXPAXLI is comprised of two ongoing complementary clinical trials, SOL-1 and SOL-R, which are strategically designed with the intent of de-risking subject populations, aligning with regulatory standards, and providing a broad evaluation of AXPAXLI’s durability, repeatability, and flexibility. In addition, in the second quarter of 2026, we plan to initiate a long-term extension study, which we refer to as the SOL-X trial, to evaluate the long-term safety of AXPAXLI; to explore long-term visual outcomes, including visual acuity and the incidence and/or progression of fibrosis and macular atrophy; and to evaluate the impact of delayed initiation of AXPAXLI in patients who initially were randomized to receive aflibercept in either SOL-1 or SOL-R. We have also conducted a Phase 1 clinical trial in Australia and a Phase 1 clinical trial in the United States to evaluate AXPAXLI for the treatment of wet AMD.

The SOL-1 Trial

We are currently conducting the SOL-1 trial, a repeat-dosing registrational Phase 3 clinical trial for the treatment of wet AMD. The SOL-1 trial is designed as a prospective, multi-center, double-masked, randomized (1:1), parallel-group, two-arm superiority trial that involves more than 100 trial sites located in the United States and Argentina. The SOL-1 trial is designed as a superiority trial comparing a single injection of AXPAXLI 450 μg to a single injection of aflibercept 2 mg and assessing the safety and efficacy of AXPAXLI in subjects with wet AMD. The primary endpoint is the proportion of subjects who maintain visual acuity, defined as a Best Corrected Visual Acuity, or BCVA, loss of fewer than 15 letters on the Early Treatment of Diabetic Retinopathy Study, or ETDRS, letters chart from baseline at Week 36. One of the secondary endpoints being evaluated is the proportion of subjects who maintain visual acuity measured at Week 52. At Weeks 52 and 76, all subjects that were randomized in the trial at Day 1, including subjects who previously received supplemental anti-VEGF treatment, are re-dosed with their respective initial treatment of a single injection of AXPAXLI 450 μg in the investigational arm or a single injection of aflibercept 2 mg in the control arm. Subjects will be followed for safety until the end of Week 104. We believe the design of the SOL-1 trial enhances the potential for a 6 - 12 month dosing label for AXPAXLI for the treatment of wet AMD and also provides insights into the long-term durability of AXPAXLI.

In December 2024, the SOL-1 trial completed randomization of 344 evaluable treatment-naïve subjects with a diagnosis of wet AMD in the study eye who have 20/80 vision or better and a central subfield thickness, or CSFT, of not more than 500 μm. Under the study protocol, after initial screening, every enrolled subject received two aflibercept 2 mg loading doses between the screening visit and Day 1: one at Week -8 and another at Week -4. Subjects reaching approximately 20/20 vision or experiencing an improvement of at least 10 ETDRS letters after these injections, in addition to satisfying other criteria, were randomized in the trial at Day 1 to receive either one dose of AXPAXLI 450 μg in the investigational arm or one injection of aflibercept 2 mg in the control arm. After all predefined visit assessments at Week 52 and at Week 76, all subjects that were randomized in the trial at Day 1, including subjects who previously received supplemental anti-VEGF treatment, are re-dosed with their respective initial treatment of a single dose of AXPAXLI 450 μg in the investigational arm or a single injection of aflibercept 2 mg in the control arm and followed for safety until Week 104. Throughout the trial, subjects are assessed monthly. Subjects who were successfully randomized in the SOL-1 trial on Day 1 are being followed every month and will receive a supplemental dose of aflibercept 2 mg as needed based on pre-specified criteria. Our pre-specified rescue criteria are a loss of 15 or more letters on the ETDRS chart compared to baseline due to wet AMD, or a new hemorrhage that is deemed to be likely to cause irreversible vision loss due to progression of wet AMD. The first time a subject is observed to have lost 15 or more ETDRS letters in BCVA in the study eye due to wet AMD at any time up to Week 36 in the trial would be considered as having met the endpoint as a treatment failure.

We are conducting the SOL-1 trial in accordance with a SPA agreement with the FDA. We initially sought a SPA agreement from the FDA to determine whether the proposed clinical protocol and the statistical analysis plan for the SOL-1 trial adequately addressed scientific and regulatory requirements for a clinical trial that could support a marketing application. We received an agreement letter regarding the overall trial design from the FDA under the SPA agreement on October 30, 2023. In December 2023, we submitted a first SPA agreement modification to the FDA to broaden the inclusion criteria for subjects in the SOL-1 trial and to reflect our intention to evaluate a single optimized dose of AXPAXLI 450 μg of a more soluble form of axitinib in the trial. We received an agreement letter regarding the first SPA agreement modification from the FDA on January 22, 2024. This first SPA agreement modification enabled us to include

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in the trial treatment-naïve wet AMD subjects with visual acuity of approximately 20/80 or better at the initial screening visit. These subjects then needed to reach the BCVA of approximately 20/20 or experience an improvement of at least 10 ETDRS letters gain from the initial screening visit at Day 1 to be randomized. In addition, the subjects were stratified between the two treatment groups at randomization based on BCVA category (≤ 71 and >71 ETDRS letters) as of the initial screening visit. In January 2025, we submitted a subsequent SPA agreement modification to the FDA to add a repeat dose of AXPAXLI 450 μg at Week 52 and at Week 76, in each case, after all pre-defined efficacy endpoint assessments, to generate the required safety data for subjects re-dosed with AXPAXLI 450 μg through Week 104, to support long-term dosing. We received an agreement letter regarding the second SPA agreement modification from the FDA on February 24, 2025.

As of February 4, 2026, the SOL-1 trial continues to maintain an exceptional rate of subject retention and per protocol-defined treatment rescues. All subjects have completed their Week 52 visit and have been re-dosed according to their baseline treatment assignment. Oversight by an independent data and safety monitoring committee has not identified any safety signals in the SOL-1 trial to date.

As of February 4, 2026, the results of the SOL-1 trial remain masked. We expect to present Week 52 results for the SOL-1 trial at the 49th Macula Society Annual Meeting, taking place between February 25 – 28, 2026.

The SOL-R Trial

In June 2024, we initiated the SOL-R trial, a repeat-dosing registrational Phase 3 clinical trial for the treatment of wet AMD. The SOL-R trial is designed as a multi-center, double-masked, randomized (2:2:1), three-arm trial that involves sites located in the U.S., Argentina, India and Australia. This non-inferiority trial sought to enroll subjects that were either treatment naïve or had been diagnosed with wet AMD in the study eye within the prior four months. The trial design reflects a patient enrichment strategy over the six months prior to randomization that includes three screening and two loading doses of anti-VEGF therapy, including aflibercept 2 mg, and monitoring to exclude those subjects with early persistent fluid, showing CSFT of more than 350 microns, or significant retinal fluid fluctuations, showing CSFT increase of 35 microns or more from the lowest CSFT measurement at any prior visit. In the first arm, subjects will receive a dose of AXPAXLI 450 μg at Day 1 and be re-dosed with AXPAXLI 450 μg at Weeks 24, 48, and every 24 weeks thereafter. In the second arm, subjects will receive aflibercept 2 mg on-label every 8 weeks. In the third arm, subjects will receive an 8 mg dose of aflibercept at Day 1 and will be re-dosed at Weeks 24, 48, and every 24 weeks thereafter, aligned with the AXPAXLI dosing regimen in the first arm and serving as adequate masking pursuant to current FDA guidance. Subjects will be followed for safety until Week 96. Throughout the trial, subjects are assessed monthly. The clinical trial protocol requires that, during the trial, subjects in any arm meeting pre-specified rescue criteria will receive a supplemental dose of aflibercept 2 mg. The pre-specified rescue criteria include a loss of more than 5 ETDRS letters in BCVA from best recorded prior visit (baseline or later) due to wet AMD, combined with an increase of 75 microns or more in CSFT from prior lowest measurement (baseline or later) due to wet AMD. The primary endpoint is non-inferiority in mean change in BCVA from baseline between the AXPAXLI and on-label aflibercept 2 mg arms at Week 56. As per the protocol agreed to by the FDA, the non-inferiority margin for the lower bound is -4.5 letters of mean BCVA when compared to aflibercept 2 mg dosed every eight weeks.

The first subject was enrolled in the SOL-R trial in July 2024. In November 2025, we announced that the SOL-R trial had achieved its randomization target of 555 subjects. We continued to allow randomization of previously enrolled subjects that were still in the loading phase when we achieved target randomization to maintain our commitment to both patients and investigators. We have completed randomization of the SOL-R trial with 631 subjects randomized. We expect topline data from the SOL-R trial to be available in the first quarter of 2027, an acceleration from our previous guidance of the first half of 2027.

In a written Type C response received in August 2024, and a subsequent written response received in December 2024, the FDA agreed that the SOL-R repeat dosing wet AMD trial, with a primary endpoint at Week 56, should be appropriate as an adequate and well-controlled trial in support of a potential NDA and product label for AXPAXLI for the treatment of wet AMD. At the time, the FDA also noted that the use of one superiority trial and one non-inferiority trial is generally acceptable as the basis of an eventual NDA in wet AMD.

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The SOL-X Trial

We plan to initiate a multi-center, open-label long-term safety extension clinical trial, which we refer to as the SOL-X trial, in the second quarter of 2026 to evaluate subjects who have completed their two-year safety follow-up visits in either the SOL-1 or SOL-R trials for an additional three years. The primary objectives of the planned SOL-X trial are to evaluate the long-term safety of AXPAXLI; to explore long-term visual outcomes, including visual acuity and the incidence and/or progression of fibrosis and macular atrophy; and to evaluate the impact of delayed initiation of AXPAXLI in patients who initially were randomized to receive aflibercept in either SOL-1 or SOL-R. According to the planned trial design, subjects enrolled in the SOL-X trial are to receive AXPAXLI 450 μg every 24 weeks and are to be evaluated at Week 4, Week 12, and every 12 weeks thereafter.

Phase 1 Clinical Trial (Australia)

We have conducted an open-label, multi-center, proof-of-concept, dose-escalation Phase 1 clinical trial of AXPAXLI for the treatment of patients with wet AMD. This Phase 1 clinical trial was designed to evaluate the safety, durability and tolerability of AXPAXLI. All subjects have completed this Phase 1 clinical trial.

Our Phase 1 clinical trial of AXPAXLI in Australia was submitted to the Therapeutic Goods Administration, Australia’s regulatory authority for therapeutic goods, in July 2018 and was being conducted at multiple sites in Australia. The Phase 1 clinical trial was comprised of four cohorts consisting of subjects with wet AMD and pre-existing intraretinal and/or subretinal fluid: a lower dose cohort of 200 μg with six subjects; a higher dose cohort of 400 μg with seven subjects; a third cohort with two parallel arms, one arm of four subjects receiving a concomitant anti-VEGF injection with 400 μg of AXPAXLI and the other arm of six subjects receiving a 600 μg of AXPAXLI with no anti-VEGF injection; and a fourth cohort with two parallel arms, one arm of one subject receiving a 600 μg single dose of AXPAXLI and the other arm of five subjects receiving a 600 μg single dose of AXPAXLI with anti-VEGF injection. In this trial, we evaluated whether AXPAXLI can reduce existing fluid levels.

In the Phase 1 clinical trial of AXPAXLI conducted in Australia, we evaluated biological activity by measuring CSFT, using spectral domain optical coherence tomography, or OCT, and following visual acuity over time as measured by BCVA.

In the clinical trial, intravitreal injections of AXPAXLI at 200 μg, 400 μg, and 600 μg, with and without concurrent administration of anti-VEGF, were generally well tolerated. There were no drug-related serious treatment-emergent adverse events reported in any of the AXPAXLI dose cohorts over the 9-month study period. Plasma levels of the active drug, axitinib, were below the limit of quantification at all doses, indicating that systemic exposure to intravitreal delivery of axitinib by AXPAXLI up to 600 μg was negligible. This data also showed a preliminary signal of biological activity as observed by a clinically meaningful decrease in the volume of intraretinal and/or subretinal fluid as measured by high resolution OCT that provides cross-sectional images of the anatomical structure of the retina. Some subjects showed a decrease in intraretinal or subretinal fluid by two months in cohorts 2 (400 μg) and 3a (600 μg). In cohort 3b (400 μg dose plus anti-VEGF induction injection of aflibercept), two subjects showed a decrease in intraretinal or subretinal fluid as early as a week after treatment. We observed extended duration of activity of six months or more for over 60% of subjects across all cohorts and for over 80% of subjects in cohort 3a, in which we administered a 600 μg dose. In addition, the AXPAXLI doses in cohort 1 (200 μg single dose) were observed to have biodegraded in all subjects within nine to 10.5 months of injection. It has also been observed in the trial that the hydrogels were able to be adequately monitored and that there was limited to no movement of the hydrogel and no migration into the anterior chamber has occurred.

Phase 1 Clinical Trial (United States)

We have conducted a prospective, multi-center, randomized, controlled Phase 1 clinical trial in the United States to evaluate a single 600 μg dose of AXPAXLI with an anti-VEGF injection in comparison with a 2 mg dose of aflibercept. This trial was initiated under an exploratory investigational new drug, or eIND, application, and subsequently transitioned to a traditional investigational new drug, or IND, application. The population we studied in this U.S.-based clinical trial was different than the population we studied in our Phase 1 clinical trial of AXPAXLI in Australia. In this trial, we evaluated how long we are able to maintain subjects who have been previously treated with anti-VEGF therapy without the need for retreatment. All enrolled subjects have completed this Phase 1 clinical trial.

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The trial enrolled a total of 21 subjects at six clinical sites, comprising two arms consisting of subjects previously treated with, and who were responsive to, standard of care anti-VEGF therapy: a 16-subject arm receiving AXPAXLI in combination with a single anti-VEGF injection at month one and a five-subject arm receiving on-label aflibercept at eight-week intervals. The trial was designed to assess the safety, durability and tolerability of AXPAXLI as well as to assess preliminary biological activity in subjects by measuring anatomical and functional changes.

In February 2023, we announced interim 10-month data from the Phase 1 clinical trial of AXPAXLI in the United States at the Angiogenesis, Exudation, and Degeneration 2023 Annual Meeting. As of the December 12, 2022 cut-off date, the interim data showed that the single 600 μg AXPAXLI dose was generally well tolerated with no drug-related ocular or systemic serious adverse events, or SAEs, observed through 10 months. One SAE of endophthalmitis was observed in the AXPAXLI arm which occurred following the aflibercept injection required by the clinical trial protocol at month one and was assessed by the investigator as related to the injection procedure. There were no instances of elevated intraocular pressure, or IOP, retinal detachment, retinal vasculitis, or hydrogel implant migration into the anterior chamber observed in the AXPAXLI arm, and no subjects had dropped out of either arm as of the data cutoff.

The interim results showed subjects treated with a single AXPAXLI dose demonstrated stable and sustained BCVA (mean change from baseline of -0.3 letters) and CSFT (mean change from baseline of -1.3 μm) in the AXPAXLI arm at 10 months, which was comparable with the aflibercept arm (mean change from BCVA baseline of -0.8 letters; mean change from CSFT baseline of -4.5 μm). Up to Month 10, 73% of subjects remained rescue-free. Overall, a 92% reduction in treatment burden (average percent decrease in injections over the period compared to a standard monthly injection regimen) was observed in AXPAXLI treated subjects for up to 10 months. Four subjects were rescued in the AXPAXLI arm up to Month 10. One subject, the subject who experienced endophthalmitis, was rescued twice. None of these rescues met the pre-established rescue criteria set forth in the clinical trial protocol and were instead initiated at investigator discretion. One additional subject, who met the established rescue criteria at such subject’s Month 10 visit, was rescued at the end of Month 10.

There was one subject randomized to the AXPAXLI arm who was inadvertently given aflibercept instead of sham injections at the subject’s month three and month five visits. Since this subject was not treated according to protocol, the subject was excluded from the analysis of biological activity, which comprised 15 out of the 16 subjects in the AXPAXLI arm and all five subjects in the aflibercept arm, but the subject was included in the safety analysis which comprised all 16 subjects in the AXPAXLI arm and all five subjects in the aflibercept arm.

In April 2023, we presented data regarding the preclinical pharmacokinetics, or PK, of AXPAXLI and a review of the 10-month interim data from the ongoing Phase 1 clinical trial of AXPAXLI in the United States, including AXPAXLI resorption data to date. We augmented the results from our ongoing clinical trial with PK data in two animal models showing the uptake of axitinib from our hydrogel in the choroid and retinal pigment epithelium, or RPE, cells, where axitinib acts intra-cellularly to exert its VEGF receptor inhibiting effect. That data showed that clinically representative formulations of AXPAXLI delivered sustained axitinib concentrations through 12 months that were well above the IC50 for VEGFR-2 (vascular endothelial growth factor receptor) in cynomolgus monkey retina tissue and choroid/RPE tissues. This preclinical PK data aligns with the pharmacodynamics data we observed in our U.S. clinical trial, namely the high proportion of rescue-free subjects up to Month 10 and suggests that AXPAXLI may provide continuous VEGF receptor inhibition.

In June 2023, we presented 12-month data from the ongoing Phase 1 clinical trial of AXPAXLI in the United States at the Clinical Trials at the Summit 2023 conference sponsored by the American Society of Retina Specialists. As of the April 14, 2023 cut-off date, there were no drug-related ocular or systemic SAEs observed in the AXPAXLI arm except for the one SAE of endophthalmitis following the aflibercept injection at month 1 that we had previously announced. There were no retinal detachment, retinal vasculitis, or hydrogel implant migration into the anterior chamber adverse events observed in the AXPAXLI arm, and no subjects had dropped out of either arm as of the data cut-off. The results showed subjects treated with a single AXPAXLI dose continued to demonstrate sustained BCVA (mean change from baseline of -1.0 letters) and CSFT (mean change from baseline of +20.2 μm) in the AXPAXLI arm at 12 months, which was comparable with the aflibercept arm (mean change from BCVA baseline of +2.0 letters; mean change from CSFT baseline of -2.2 μm). Sixty percent of AXPAXLI subjects were rescue-free up to Month 12. At the Month 12 visit, an additional four of the subjects were rescued. Overall, an 89% reduction in treatment burden was observed in AXPAXLI treated subjects at 12 months. These results align with our expectation that we would see a reactivation of

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disease in some subjects, which we believe indicates that AXPAXLI continues to function as designed with axitinib concentrations beginning to fall below therapeutic levels after the hydrogel bioresorbs.

In the clinical trial, intravitreal administration of single AXPAXLI 600 μg dose was generally well tolerated during the 52 weeks of the study. There were no drug-related ocular or systemic significant adverse events with either AXPAXLI or aflibercept treatment during 52 weeks of assessment. BCVA was stable after single AXPAXLI 600 μg dose administration and appeared similar to that of the aflibercept 2 mg administered every 8 weeks during 52 weeks of assessment. CSFT parameters were stable with AXPAXLI administration and appeared similar to that of the aflibercept 2 mg arm during 52 weeks of assessment. There were fewer injections over 52 weeks in subjects with AXPAXLI compared with the annualized number of anti-VEGF injections in 52 weeks prior to baseline. Furthermore, there were fewer injections over 52 weeks received in subjects from AXPAXLI treatment compared to those received in aflibercept 2 mg treatment arm.

Next Steps

Pending the receipt of favorable results from the SOL-1 trial and planned interactions with the FDA, we intend to submit an NDA for AXPAXLI for the treatment of wet AMD based on Week 52 data from the SOL-1 trial, without necessarily waiting to receive additional clinical data from SOL-1, SOL-R or other clinical trials. Because axitinib is FDA-approved for non-ophthalmic indications, we plan to submit an NDA under Section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act, or FDCA, which has the potential to shorten the review timeline for AXPAXLI by up to two months compared to the traditional review pathway for new molecular entities (see “—Government Regulation—Section 505(b)(2) NDAs” for additional information).

Diabetic Retinal Disease

Highlights

We commenced our HELIOS registrational program for AXPAXLI for the treatment of diabetic retinal disease with the initiation of the Phase 3 HELIOS-3 superiority clinical trial for the treatment of NPDR in November 2025. Our potential second Phase 3 trial for the treatment of diabetic retinal disease, HELIOS-2, has not yet been initiated. Subject to the results of our anticipated discussions with the FDA regarding filing plans for AXPAXLI in wet AMD based on data from the SOL-1 trial only, we may elect to pursue a streamlined development approach in diabetic retinal disease, potentially advancing with only a single Phase 3 HELIOS-3 trial. The HELIOS registrational program targets a broad label in diabetic retinal disease by including subjects who also have non-CI-DME, in addition to NPDR. We have previously conducted the HELIOS-1 trial, a Phase 1 clinical trial to evaluate AXPAXLI for the treatment of NPDR, and which also included patients with non-CI-DME.

Our HELIOS registrational program employs a novel ordinal primary endpoint of 2- step change status from baseline at Week 52 on the DRSS. Historically, DR trials have relied on binary endpoints measuring either an improvement of 2 or more steps in DRSS or the prevention of a 2 or more step DRSS worsening. In contrast, the ordinal endpoint we use in the HELIOS program measures changes across the DRSS spectrum, including disease improvement, stability, and worsening. These are all clinically meaningful measures for retina specialists in the context of a disease that gets progressively worse if untreated. The use of the novel ordinal endpoint means that every patient will contribute data to the statistical analysis, allowing for a smaller trial size to achieve statistically significant outcomes relative to the size required for a binary analysis. We believe the ordinal DRSS endpoint enables a higher probability of success with smaller, shorter, more relevant, and less expensive trials, relative to trials conducted utilizing other potential DRSS-based endpoints. Our use of an ordinal endpoint in the HELIOS program is the first time an ordinal endpoint has been used in DR trials.

In August 2025, we received written agreement regarding the overall design of the HELIOS-2 trial, including the proposed novel ordinal endpoint and statistical analysis plan, from the FDA under a SPA agreement. The SPA agreement for HELIOS-2 has informed our design of the HELIOS-3 trial, as both trials were designed to use the same primary endpoint.

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The HELIOS-3 Trial

The ongoing HELIOS-3 trial is evaluating the safety and efficacy of AXPAXLI and is intended to randomize approximately 930 subjects with moderately severe to severe NPDR without center-involved DME, or CI-DME. The HELIOS-3 trial is a multi-center, double-masked, randomized (1:1:1), three-arm superiority trial comparing two dosing regimens of AXPAXLI 450 μg to a sham comparator. The trial is expected to include subjects with non-CI-DME.

Eligible subjects in the HELIOS-3 trial are randomized as follows: subjects in the first arm will receive a single injection of AXPAXLI 450 μg at Day 1 and will be re-dosed with AXPAXLI 450 μg at Week 24; subjects in the second arm will receive a single injection of AXPAXLI 450 μg at Day 1 and a sham injection at Week 24; and subjects in the third arm will receive sham injections at both Day 1 and Week 24. Subjects will be assessed every three months throughout the trial, and subjects and designated trial personnel will remain masked through the end of Week 52.

The primary endpoint of the HELIOS-3 clinical trial is subjects’ ordinal 2-step DRSS change status from baseline—comparing whether subjects have experienced at least a two-step improvement, at least a two-step worsening, or less than a two-step change in either direction—assessed at Week 52.

On November 24, 2025, we announced that the first subject in the HELIOS-3 trial was randomized.

The HELIOS-2 Trial

We may decide to conduct a second Phase 3 clinical trial, HELIOS-2, to potentially provide enhanced support for a superiority label. The HELIOS-2 trial is designed to evaluate the safety and efficacy of AXPAXLI in approximately 432 subjects with moderately severe to severe NPDR without center-involved DME, or CI-DME. This multi-center, double-masked, superiority trial is designed to randomize subjects (1:1), in parallel-groups comparing a single injection of AXPAXLI 450 μg to a single injection of ranibizumab 0.3 mg. We expect that this trial would also include subjects with non-CI-DME.

According to the planned trial design, eligible subjects in the HELIOS-2 trial would be randomized to receive either a single dose of AXPAXLI 450 μg or a single dose of ranibizumab 0.3 mg. At Week 52, all subjects that were randomized in the trial would be re-dosed with their respective initial treatments. Subjects would be assessed monthly through Year 1 and every other month thereafter for safety through the end of Year 2. Subjects and designated trial personnel would remain masked through the end of Year 2.

The primary endpoint of the HELIOS-2 clinical trial would be identical to the primary endpoint of the HELIOS-3 trial, subjects’ ordinal 2-step DRSS change status from baseline as assessed at Week 52.

HELIOS-1 Phase 1 Clinical Trial

We have completed the HELIOS-1 trial, previously referred to as the “HELIOS” trial, a U.S.-based, multicenter, double-masked, randomized, parallel group Phase 1 clinical trial evaluating the safety, tolerability and efficacy of a single injection of an AXPAXLI 600 μg dose in subjects with moderately severe to severe NPDR without CI-DME. We conducted the HELIOS-1 trial initially under an eIND, which was subsequently converted to a traditional IND. We enrolled 22 subjects with diabetic retinopathy secondary to type 1 or type 2 diabetes who had not had an anti-VEGF injection in the prior 12 months or DME in the prior six months, randomized 2:1 to either a single dose of AXPAXLI containing 600 μg of axitinib or sham control. One subject died during the HELIOS-1 trial due to reasons unrelated to the trial and study treatment.

In June 2024, we announced topline data from the HELIOS-1 trial at 48 weeks. AXPAXLI was generally well-tolerated and did not result in any reported incidence of intraocular inflammation, iritis, vitritis, or vasculitis. No subjects in either arm received rescue medication. At week 48, six of 13 (46.2%) subjects in the AXPAXLI group experienced either a 1- or 2-step improvement in DRSS, with three of the 13 (23.1%) experiencing a 2-step improvement. No subjects in the control group showed a 1-step or greater improvement at the same timepoint. No subjects in the AXPAXLI group experienced any worsening in DRSS. Two of eight (25.0%) subjects in the control group experienced worsening in the DRSS at 48 weeks. No subjects in the AXPAXLI group developed PDR or CI-DME at week 48. Three of eight (37.5%) subjects in the control group developed PDR or CI-DME at the same timepoint. On average, subjects in

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the AXPAXLI arm showed improvement in mean CSFT versus baseline compared to the control group, which showed worsening at the 48-week timepoint.

Next Steps

If we were to obtain favorable results from the HELIOS registrational program, we expect to submit a supplemental NDA with the FDA, targeting a broad label for diabetic retinal disease. We plan to refine our development plans and planned regulatory pathway for AXPAXLI for the treatment of diabetic retinal disease based on our planned engagements with the FDA regarding the regulatory pathway for AXPAXLI for the treatment of wet AMD.

Injector for AXPAXLI

AXPAXLI is administered to the eye using a sterile single-dose injector. All subjects in two of our Phase 1 trials of AXPAXLI, as well as most of the subjects in the SOL-1 trial and a small subset of subjects in the SOL-R trial were dosed with AXPAXLI using our two-piece injector. We plan to continue the SOL program with the two-piece injector to support our planned regulatory application with a single registrational trial for wet AMD and, if approved, our launch of AXPAXLI.

As a future lifecycle initiative for AXPAXLI, we may continue development of a next-generation one-piece injector which was used to dose AXPAXLI to a subset of subjects in both the SOL-1 and SOL-R trials.

Glaucoma

Glaucoma is a progressive and highly individualized disease in which elevated levels of IOP are associated with damage to the optic nerve, which results in irreversible vision loss. According to the World Health Organization, glaucoma is the second leading cause of blindness in the world. OHT is characterized by elevated levels of IOP without any optic nerve damage. Patients with OHT are at high risk of developing glaucoma.

In a healthy eye, fluid is continuously produced and drained to maintain pressure equilibrium and provide nutrients to the ocular tissue. Excess fluid production or insufficient drainage of fluid in the front of the eye or a combination of these problems causes increased IOP. The increased IOP associated with uncontrolled glaucoma results in degeneration of the optic nerve in the back of the eye and loss of peripheral vision. Once glaucoma develops, it is a chronic condition that requires life-long treatment.

According to the Market Scope 2024 Glaucoma Pharmaceuticals Market Report, or the Market Scope 2024 Glaucoma Report, it is estimated that there were 130.2 million people globally in 2024 with primary OAG or OHT. In the United States, it is estimated there were 6.8 million and 3.7 million who had primary OAG or OHT, respectively. The primary goal of glaucoma treatment is to slow the progression of this chronic disease by reducing IOP, and many medications can accomplish this. Importantly, however, adherence to current topical glaucoma therapies is known to be particularly poor with reported rates of non-adherence from 30% to 80%. These low compliance rates may be associated with disease progression and loss of vision and may be part of the reason that glaucoma is a leading cause of blindness in people over 60 years of age. Prostaglandins are the most commonly used class of medications to treat patients with glaucoma and are administered via daily eye drops as the current standard of care. The ability of patients to use and place daily eye drops is challenging. The product candidates that we are developing are designed to address the issue of compliance by delivering a prostaglandin analog, or PGA, formulated with our programmed release hydrogel to lower IOP for several months with a single insert.

Market Data

According to the Market Scope 2024 Glaucoma Report, the global market for glaucoma was estimated at $4.2 billion in 2024 with the U.S. market representing $1.6 billion. The global market is estimated to grow at a 4.7% CAGR through 2029 while the U.S. market is expected to grow at a 3.7% CAGR through 2029.

The most commonly used treatments for glaucoma in the United States are topical eye drops including both branded and generic products. Branded products have maintained premium pricing and significant market share. These products include Lumigan (bimatoprost) marketed by Allergan, Travatan Z (travoprost) marketed by Novartis, Tapros

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marketed by Santen, and recently approved Miebo (perfluorohexyloctane ophthalmic solution) marketed by Bausch + Lomb. Commonly used generic drugs include latanoprost and timolol.

Glaucoma Program

OTX-TIC (travoprost intracameral hydrogel)

Our product candidate OTX-TIC is a bioresorbable hydrogel implant based on ELUTYX, incorporating travoprost, an FDA-approved PGA designed to lower elevated IOP, that is designed to be administered by a physician as an intracameral injection with an initial target duration of drug release of four to six months with a single treatment.

Phase 2 Clinical Trial

We have completed a U.S.-based Phase 2 prospective, multi-center, randomized, controlled clinical trial evaluating the safety, tolerability and efficacy of OTX-TIC for the treatment of subjects with primary OAG or OHT under an IND, which consisted of a primary study and a pilot repeat-dose sub-study. The Phase 2 clinical trial was initially designed to include approximately 105 subjects at 15 to 20 sites between three arms of approximately 35 subjects each to evaluate two formulations of OTX-TIC for the treatment of OAG or OHT in subjects compared to DURYSTA. The non-study eye of each subject received a topical PGA daily, if not contraindicated. The primary efficacy endpoint was measured by mean change from baseline (8 a.m., 10 a.m. and 4 p.m.) at 2, 6 and 12 weeks in diurnal IOP. The active comparator control arm received one injection of DURYSTA in one eye and a topical PGA daily in the non-study eye, if not contraindicated.

We initiated the Phase 2 clinical trial in the fourth quarter of 2021 and dosed the first subject in the first quarter of 2022. One arm in the Phase 2 clinical trial received the same formulation used in cohort 2 of the Phase 1 clinical trial of OTX-TIC that we conducted, containing a 26 μg dose of travoprost and utilizing a standard hydrogel. The second arm received the same formulation used in cohort 4 of the Phase 1 clinical trial, containing a 5 μg dose of drug and utilizing a fast-degrading hydrogel. Due to elevations in IOP observed in six subjects approximately 12 weeks after enrollment in the OTX-TIC 5 μg arm of the trial, we terminated enrollment in the 5 μg arm of the trial in the fourth quarter of 2022 and continued with the OTX-TIC 26 μg and DURYSTA arms of the trial.

The Phase 2 clinical trial primary study consisted of 83 subjects: 33 subjects in the OTX-TIC 26 μg treatment arm, 34 subjects in the DURYSTA arm and 16 subjects that were previously enrolled in the OTX-TIC 5 μg treatment arm. Enrollment of the Phase 2 clinical trial was completed in July 2023. In April 2024, we presented 6-month topline data from this Phase 2 clinical trial at the 2024 American Society of Cataract and Refractive Surgery Annual Meeting. In the trial, the OTX-TIC 26 μg single hydrogel implant demonstrated consistent control of IOP, through six months, as statistically significant IOP changes from baseline were observed for every individual and mean diurnal measurement at primary endpoints Week 2 (M0.5), Week 6 (M1.5), and Week 12 (M3), as well as secondary endpoints Months 4.5 and 6 (p<0.0001), although no formal statistical testing was prespecified by the clinical trial protocol. Clinically meaningful mean IOP reduction of approximately 24-30% from baseline over six months was observed. A majority (81.3%) of treated eyes did not require additional IOP-lowering therapy through six months, indicating sustained and consistent treatment effects.

OTX-TIC 26 μg was generally well tolerated with no impact on the corneal endothelium having been observed at six months following a single administration of the product candidate. The majority of adverse events, observed were mild in severity and generally resolved with topical medical treatment. Most ocular adverse events occurring within three days of the injection were deemed related to the injection procedure by the investigators. Adverse events observed more than three days post-injection procedure were consistent with the travoprost label. There was one serious adverse event in the trial, where a hydrogel implant required removal, which the investigator assessed to be likely due to a peri-implantation bacterial infection. Consistent bioresorption of the hydrogel implant coupled with the durable effect observed in the Phase 2 trial suggests redosing could be possible without the risk of implants stacking.

We completed the pilot repeat-dose sub-study in a subset of subjects from our Phase 2 clinical trial of OTX-TIC to evaluate the safety of a repeat, sustained release dose of OTX-TIC 26 μg. Subjects in the primary Phase 2 study who had received either OTX-TIC 26 μg or DURYSTA and who did not require rescue therapy during the primary study (prior to Visit 10) were eligible to participate in the repeat dose sub-study. Subjects who had received OTX-TIC 26 μg in the primary study received a repeat-dose of OTX-TIC 26 μg in the sub-study once the initial dose of OTX-TIC from the

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primary study had fully reabsorbed (6 patients at sub-study enrollment; 3 additional patients received sham at sub-study enrollment and OTX-TIC 26 μg at a later study visit following full reabsorption). As DURYSTA cannot be administered more than once in the same eye, there were 16 subjects who received DURYSTA in the primary study who received sham in their assigned study eye in the repeat-dose sub-study. Subjects were followed for at least six months after their enrollment in the sub-study and repeat dosing with OTX-TIC 26 μg or sham.

Data from the sub-study were consistent with data previously observed in the OTX-TIC primary study. We observed a decrease from baseline (Day 0, Visit 2 of the primary study) in mean intraocular pressure, or IOP, values at 8 AM, 10 AM, and 4 PM at all repeat-dose post-injection visits in the study eye in the OTX-TIC 26 μg group and sham group, with mean IOP values similar or lower than those seen at Month 6 of the primary study. During the repeat-dose sub-study, the mean decrease in diurnal IOP values from baseline was greater at all time points for subjects who received a repeat-dose of OTX-TIC than for subjects who received DURYSTA in the main study and a sham injection in the repeat-dose sub-study.

OTX-TIC 26 μg was generally well tolerated after both single and repeat dosing in patients with OAG or OHT. In addition, no new safety concerns were identified following repeat-dosing of OTX-TIC 26 μg in the small subset of subjects who participated in the sub-study.

Phase 1 Clinical Development

We submitted an IND for OTX-TIC in February 2018 and have completed a prospective, multi-center, open-label, dose-escalation, proof-of-concept Phase 1 clinical trial of OTX-TIC in the United States that we initiated in the second quarter of 2018 for the treatment of subjects with moderate to severe glaucoma or OHT. The clinical trial is designed to evaluate the safety, biological activity, durability and tolerability of OTX-TIC in subjects with controlled OAG or OHT. The clinical trial consisted of four subject cohorts: cohort 1 included five subjects who received a 15 μg dose, cohort 2 included four subjects who received a 26 μg dose, cohort 3 included five subjects who received a 15 μg dose with a fast-degrading hydrogel, and cohort 4 included five subjects who received a 5 μg dose with a fast-degrading hydrogel.

In February 2022, at the Glaucoma 360 virtual meeting, we presented interim results from all four subject cohorts in the Phase 1 clinical trial. In the Phase 1 clinical trial, at least one subject in each of the four cohorts receiving OTX-TIC were observed to experience a mean change in IOP from baseline as measured at 8:00 am, 10:00 a.m. and 4:00 p.m. as early as two days following injection. We believe these results were comparable to the decrease in IOP achieved with topical travoprost administered via daily eye drops. IOP lowering effects lasted more than six months in subjects in cohorts 1 and 2 and three to six months in subjects in cohorts 3 and 4.

The OTX-TIC hydrogel was observed to biodegrade over the course of between five and seven months in subjects in cohorts 1 and 2. In subjects in cohorts 3 and 4, the fast-degrading hydrogels were observed to biodegrade over the course of between three and five months. Within all four cohorts, hydrogel implants were not observed to move when viewed with a slit lamp biomicroscope and were visible at all examinations in all subjects using gonioscopy. Corneal health as measured by endothelial cell counts, pachymetry assessments, and slit lamp examinations did not indicate any clinically meaningful changes from baseline in any of the four cohorts. IOP elevation was observed in three subjects in cohort 3 at the approximate time of the hydrogel resorption.

Foreign Activities

We have entered into a license agreement and collaboration with AffaMed for the development and commercialization of OTX-TIC for the treatment of OAG or OHT, along with DEXTENZA, in mainland China, Taiwan, Hong Kong, Macau, South Korea, and the countries of the Association of Southeast Asian Nations, or the AffaMed License Agreement. AffaMed has informed us that they are currently evaluating their next steps for their clinical development program for OTX-TIC.

Next Steps

We are currently evaluating next steps for the OTX-TIC program.

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Dry Eye Programs

We are not currently actively pursuing additional development activities for our product candidates OTX-DED (dexamethasone intracanalicular insert) for the short-term treatment of the signs and symptoms of dry eye disease, or OTX-CSI (cyclosporine intracanalicular insert) for the chronic treatment of dry eye disease.

The Ocular Therapeutix Approach

Limitations of Current Back-of-the-Eye Injections

An intravitreal injection is a procedure to place a medication directly into the space in the back of the eye called the vitreous cavity, which is filled with a jelly-like fluid called the vitreous humor gel. The procedure is usually performed by a trained retina specialist in the office setting. Intravitreal injections are used to administer medications to treat a variety of chronic conditions; wet AMD, diabetic retinal disease, and RVO are among the most common conditions treated with intravitreal drugs. The most common intravitreal injections are anti-VEGF drugs. Anti-VEGF drugs and steroids, which also can be injected intravitreally and are used to treat vascular diseases such as DME and RVO, but not non-vascular diseases such as wet AMD, help to reduce fluid leakage associated with these disorders.

While anti-VEGF treatment regimens can be very effective therapies, there are a number of significant drawbacks, driven primarily by the frequency of injections. Patients typically require injections every six to eight weeks, but can require them as frequently as every 4 weeks. We refer to the number of injections a patient has over a given time period as the treatment burden of the particular treatment. The actual injection at the time of administration is often uncomfortable for patients and can be a deterrent in terms of compliance. Then there is the burden to both patients and their caregivers of regular office visits. Most patients require assistance in getting to and from the office visit if they are undergoing injections given the discomfort that can occur post-injection. In addition, these patients may not be mobile enough to travel to the office on their own and therefore require not only the assistance of a caregiver but also transportation to and from the office. Patients with diabetic retinal disease are often younger, part of the active workforce and therefore unwilling or unable to take personal time off to receive frequent injections. Furthermore, frequent injections of medications to the back of the eye can lead to peaks and troughs of medication levels, with fluctuations of intraretinal fluid based on these levels. Such fluid fluctuations have been associated with decreased vision and possibly fibrosis. Finally, while intravitreal injections are typically safe, there is the potential risk of endophthalmitis (infection in the eye), inflammation, bleeding into the vitreous gel and retinal detachment that comes with injections.

As a result of these limitations, there is a significant unmet need for technologies that will allow for a longer duration of effect and an overall reduced treatment burden, measured by the number of injections.

Our Hydrogel-Based Formulation Technology ELUTYX

We apply our expertise with ELUTYX to the development of products for local programmed-release of known, FDA-approved therapeutic agents for a variety of ophthalmic diseases and conditions and to ophthalmic wound closure.

ELUTYX is based on the use of a proprietary form of polyethylene glycol, or PEG. Our technical capabilities include a deep understanding of the polymer chemistry of PEG-based hydrogels and the design of the highly specialized manufacturing processes required to achieve a reliable, preservative-free and pure product. We tailor the hydrogel to act as a vehicle for local programmed-release drug delivery to the eye and as an ocular tissue sealant.

We create our hydrogels by cross-linking PEG molecules to form a network that resembles a three-dimensional mesh on a molecular level. Our PEG molecules are branched, with four to eight branches or arms. Each arm bears a reactive site on its end. Our cross-linking chemistry uses a second molecule with multiple arms, bearing complimentary reactive sites on each end, such that when combined with the PEG molecules, a network spontaneously forms. When swollen with water, this molecular network forms a hydrogel. We design these hydrogels to slowly degrade in the presence of water, a process called hydrolysis, by inserting a biodegradable linkage between the PEG molecule and the cross-linked molecule. By appropriately selecting the number of arms of the PEG molecule and the biodegradable linkage, we can design hydrogels with varying mechanical properties and bioresorption rates. Because the body has an abundance of water at a constant temperature and pH level, hydrolysis provides a predictable and reproducible degradation rate. Our technology enables us to make hydrogels that can bioresorb over days, weeks or months.

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We select the active pharmaceutical ingredients for our local programmed-release drug delivery product candidates based on criteria we have developed through our extensive experience with hydrogel-based technologies. We consider the following selection criteria:

● prior approval by the FDA for the targeted ophthalmic indication,

● availability from a qualified supplier; and

● compatibility with our drug delivery system.

We believe our current and future intravitreal hydrogel, intracameral hydrogel and intracanalicular insert products andproduct candidates may offer a range of favorable attributes as compared to immediate release back-of-the-eye injections and eye drops, including:

Intravitreal Hydrogels

We are engaged in the clinical development of our hydrogel administered via intravitreal injection to address the large and growing markets for diseases and conditions of the back of the eye. Our intravitreal hydrogel product candidates, such as AXPAXLI, consist of a PEG-based hydrogel, which contains embedded micronized particles of

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active drug. We design the intravitreal hydrogel to be injected and retained in the vitreous humor to provide local programmed-release intravitreal delivery of anti-VEGF compounds.

Intracameral Hydrogels

We are engaged in the clinical development of our hydrogel administered via intracameral injection to address glaucoma. Intracameral hydrogels refer to biodegradable or bioresorbable hydrogels placed into the anterior chamber or front of the eye for the treatment of ocular conditions. The hydrogels are designed to be held in place by currents and gravity present in the anterior chamber of an eye. In the case of OTX-TIC, the hydrogel is designed to infuse with intracameral water, settle into the inferior angle of the eye and demonstrate little to no movement. The hydrogels are soft, biodegradable and provide sustained release of at least one therapeutic agent to both the trabecular meshwork and associated ocular tissue and the fluids within the anterior chamber of an eye.

Intracanalicular Inserts

Our intracanalicular inserts, including DEXTENZA, are designed to be inserted into the patient’s punctum by a healthcare professional and to release drug to the surface of the eye to address diseases including ocular inflammation and pain following ophthalmic surgery and ocular itching associated with allergic conjunctivitis.

Our intracanalicular inserts utilize ELUTYX and are embedded with an active drug. Following insertion through the punctum, our inserts swell in tear fluid to fill the vertical canaliculus, which secures the inserts in place. Over time, the inserts liquefy and are cleared through the nasolacrimal duct. If necessary due to excessive tearing, discomfort or improper placement, a healthcare professional can remove an intracanalicular insert by a process of pushing the soft insert back through the punctum.

Commercial Portfolio

Post-Surgical Ocular Inflammation and Pain

DEXTENZA (dexamethasone intracanalicular insert)

DEXTENZA incorporates the FDA-approved corticosteroid dexamethasone as a preservative-free active pharmaceutical ingredient into a drug-eluting intracanalicular insert that is based on ELUTYX. Following FDA approval, we commercially launched DEXTENZA for the treatment of post-surgical inflammation and pain in July 2019. DEXTENZA is the first and only FDA-approved intracanalicular insert delivering dexamethasone to treat post-surgical ocular inflammation and pain for up to 30 days with a single administration.

We selected dexamethasone as the active pharmaceutical ingredient for DEXTENZA because it is approved by the FDA and has a long history of ophthalmic use; is available on a generic basis from multiple qualified suppliers; is highly potent and is typically prescribed for prevention of ocular inflammation and pain following ocular surgery; and has physical properties that are well suited for incorporation within our hydrogel technology.

The dexamethasone drug particles embedded within our DEXTENZA intracanalicular insert gradually erode and release the drug in a programmed fashion until the drug is depleted. As the dexamethasone drug particles erode and the ELUTYX degrades by hydrolysis, the intracanalicular insert softens, liquefies and is cleared through the nasolacrimal duct. We provide the DEXTENZA drug product in a preservative-free formulation in a sterile, single use package.

The standard regimen for dexamethasone eye drops following cataract surgery is an initial administration of four times daily for one week, with a gradual tapering in the number of eye drops over a four-week period. Such a regimen is often confusing to patients as they must remember to taper the number of times per day they administer the steroid, while also taking multiple eye drops of other drugs following surgery, such as antibiotics and non-steroidal anti-inflammatory drugs, or NSAIDs. We believe that local programmed-release of drug to the eye may result in better control of ocular inflammation and pain as compared to prescription eye drops and that a low dose amount may provide enhanced safety by eliminating spikes in IOP associated with high-dose steroid eye drops.

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Investigator-Initiated Trials

We have received proposals for, and are supporting, several investigator-initiated trials evaluating DEXTENZA in different clinical situations. To date, third-party clinical investigators have initiated 45 trials to study the use of DEXTENZA in cataract surgery, other ophthalmic surgeries, and other potential indications. Of those, 22 trials have published study reports, and 14 trials have been terminated. The remaining 9 trials are in various stages of enrollment and treatment.

Post-Approval Studies

In September 2020, we announced that we had dosed the first pediatric subjects in a U.S.-based, randomized, multicenter Phase 3 clinical trial evaluating DEXTENZA for the treatment of post-surgical ocular inflammation and pain in children following cataract surgery. This clinical trial is a post-approval requirement of the FDA in accordance with the Pediatric Research Equity Act of 2003, in connection with the FDA’s prior approval of DEXTENZA for the treatment of inflammation and pain following ophthalmic surgery in adults. We enrolled 65 subjects in this clinical trial. It is designed to evaluate the safety of DEXTENZA compared to an active control, prednisolone acetate suspension eye drops, for the treatment of inflammation and pain following ocular surgery for pediatric cataract in children between zero and five years of age. The FDA has agreed that this Phase 3 clinical trial evaluating DEXTENZA for the treatment of post-surgical ocular inflammation and pain in children following cataract surgery may also satisfy the post-approval requirement for a pediatric trial as it relates to the indication for ocular itching associated with allergic conjunctivitis.

In June 2024, we submitted the data for our clinical trial to evaluate DEXTENZA in pediatric subjects following cataract surgery and the updated package insert to the FDA. We received approval of the supplemental NDA for DEXTENZA in April 2025. Therefore, DEXTENZA is now also approved for use in pediatric patients for the treatment of ocular inflammation and pain following ophthalmic surgery, and in pediatric patients aged 2 years and older for the treatment of ocular itching associated with allergic conjunctivitis. The approval of this supplemental NDA provides for pediatric label expansion.

Foreign Approvals

Outside the United States, we continue to assess whether to seek regulatory approval for DEXTENZA in markets such as the European Union, Australia and Japan based on the market opportunity, particularly pricing, and the requirements for marketing approval. Given our prioritization of the clinical development of our sustained-release product candidates, in particular for retinal diseases, and our planned commercialization efforts for our initial intracanalicular insert product candidates in the United States, we expect we will need to engage third parties to assist us in the approval process.

We have entered into the AffaMed License Agreement with AffaMed for the development and commercialization of DEXTENZA, along with OTX-TIC in mainland China, Taiwan, Hong Kong, Macau, South Korea, and the countries of the Association of Southeast Asian Nations. AffaMed continues to advance its clinical development and regulatory strategy to pursue approval of DEXTENZA for the treatment of ocular inflammation and pain post-ophthalmic surgery by China’s National Medical Products Administration, or NMPA. AffaMed has obtained approval to market DEXTENZA for the treatment of ocular inflammation and pain post-ophthalmic surgery in Macau and Singapore. We do not expect that DEXTENZA sales in Macau and Singapore will result in material revenues to us.

We retain the right to develop and commercialize DEXTENZA in all other global markets.

Allergic Conjunctivitis

DEXTENZA (dexamethasone ophthalmic insert) for the Treatment of Ocular Itching Associated with Allergic Conjunctivitis

In October 2021, the FDA approved our supplemental New Drug Application, or sNDA, for DEXTENZA to include the treatment of ocular itching associated with allergic conjunctivitis as an additional indication. With the approval, DEXTENZA became the first, FDA-approved, physician-administered intracanalicular insert capable of delivering a preservative-free drug for the treatment of ocular itching associated with allergic conjunctivitis with a single administration for up to 30 days. DEXTENZA for the treatment of ocular itching associated with allergic conjunctivitis

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also represents our first indication approved to be administered in a physician’s office during a routine, non-surgical appointment. We commercially launched DEXTENZA for the treatment of ocular itching associated with allergic conjunctivitis in the first quarter of 2022.

Although dexamethasone is clinically effective in the treatment of late-phase inflammatory allergic reactions, the safety limitations associated with eye drop administration, including the potential to generate spikes in IOP due to the high levels of drug due to potential patient abuse to treat this symptomatic condition, have limited its widespread adoption. These elevations in IOP can lead to drug-induced glaucoma, although the incidence is low. Further, use of oral antihistamine medications as well as anti-histamine eye drops for allergic conjunctivitis may dry out the eye and exacerbate the discomfort to some patients. Based on our clinical trial results to date, we believe that using DEXTENZA for allergic conjunctivitis can create a low, tapered, consistent dose of dexamethasone, potentially minimizing or eliminating side effects associated with the eye drop formulation, while retaining the drug’s anti-inflammatory effects.

We believe that allergic conjunctivitis represents a discrete potential market opportunity for preservative-free DEXTENZA because it is a physician-administered, hands-free, therapy administered in the office setting. We believe that many of the specialists who treat patients for post-surgical inflammation and pain also treat patients suffering from allergic conjunctivitis.

AffaMed License Agreement

Under the terms of the AffaMed License Agreement, we received an upfront payment of $12.0 million and became eligible to receive development, regulatory and commercial milestone payments and clinical development support payments of up to $91.0 million in the aggregate, as well as royalties from future product sales. In the fourth quarter of 2021, we received a $1.0 million milestone payment upon the approval by the FDA of an sNDA for DEXTENZA to include the treatment of ocular itching associated with allergic conjunctivitis as an additional indication; in the second quarter of 2022, we received a $2.0 million clinical support payment in connection with dosing the first subject in a Phase 2 clinical trial evaluating OTX-TIC for the treatment of OAG or OHT; and in the second quarter of 2023, we received a $1.0 million milestone payment upon the NMPA’s approval of AffaMed’s Phase 3 registrational study in China to investigate the efficacy and safety of DEXTENZA in subjects following ophthalmic surgery. Royalties are tiered and will range from the low teens to low twenty percent range. In return, we agreed to grant AffaMed exclusive rights to develop and commercialize DEXTENZA for the treatment of post-surgical inflammation and pain following ophthalmic surgery and ocular itching in patients with allergic conjunctivitis, and OTX-TIC for the reduction of elevated IOP in patients with primary OAG or OHT in specified Asian markets. We retain the right to develop and commercialize DEXTENZA and OTX-TIC in all other global markets.

Sales, Marketing and Distribution

We generally expect to retain commercial rights in the United States to any of our product candidates for which we may receive marketing approvals and which we believe we can successfully commercialize. In general, if we receive approval to market any of our product candidates in the United States, we plan to then evaluate the regulatory approval requirements and commercial potential for any such product candidate in Europe, Japan and other selected geographies. If we decide to commercialize our products outside of the United States, we expect to utilize a variety of types of collaboration, distribution and other marketing arrangements with one or more third parties to commercialize any product of ours that receives marketing approval.

We sell DEXTENZA in the United States to specialty distributors, or SDs, for resale to certain ambulatory surgery centers, or ASCs, certain hospital outpatient departments, or HOPDs, and certain physicians’ offices, and directly to certain ASCs and physicians’ offices.

In addition to distribution agreements with specialty distributors and a small number of ASCs and physicians’ offices, we enter into arrangements with government payors that provide for government-mandated rebates and chargebacks with respect to the purchase of DEXTENZA. We have built a highly targeted, key account sales force of KAMs, or key account managers, Regional Directors, and FRMs, or field reimbursement managers, that primarily focuses on the ASCs and their affiliates, as well as HOPDs, that were, according to the MarketScope Ophthalmic Market Trends: Quarterly US Cataract Edition (published November 2025) Report, collectively responsible for approximately 86.9% of the approximately 4.8 million cataract procedures that were performed in the United States in 2024.

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Since 2022, we have periodically adjusted our discounting and rebate strategy to meet the demands of the market. For example, in the third quarter of 2022, we implemented an off-invoice discount, or OID, program whereby providers receive the discounted price immediately upon purchase, rather than having to wait until the end of the quarter for a rebate payment. We focus our sales efforts on sales to ASCs and strategic accounts that own and control multiple ASCs. In the first quarter of 2023, we launched a Commercial Assurance Program to provide assistance with patients’ out-of-pocket costs, supporting the expansion of DEXTENZA for commercially insured patients not covered by government payors.

Manufacturing

We fabricate devices and drug products for use in our clinical trials, research and development and commercial efforts for DEXTENZA according to current good manufacturing practices, or cGMP, at our approximately 20,000 square foot facility located in Bedford, Massachusetts. We fabricate drug products and assemble the final products for use in our clinical trials and other research and development activities for our product candidates, including AXPAXLI, at our 71,000 square foot cGMP facility that is also located in Bedford, Massachusetts. We are completing additional construction at this facility to support initial expected commercial demand for AXPAXLI.

We purchase active pharmaceutical ingredient drug substance from independent suppliers on a purchase order basis for incorporation into our drug product candidates. We purchase our PEG and other raw materials from different vendors on a purchase order basis according to our specifications. We purchase components for our injectors and for the manufacture of our hydrogel platform from several different vendors. While we believe that multiple vendors are available for each component we purchase, we have historically sole-sourced each component. We qualify vendors according to our quality system requirements. We do not have any long-term supply agreements in place for any raw materials or drug substances. We do not license any technology or pay any royalties to any of our drug or raw material vendors for the current or potential front and back-of-the-eye products.

We believe that our strategic investment in manufacturing capabilities allows us to advance product candidates at a more rapid pace, with more flexibility and greater level of quality, than if we were to work with a contract manufacturer. We will continue to evaluate outsourcing unit operations for cost advantages or eventually as a second source. Our manufacturing capability also enables us to produce products in a cost-effective manner while retaining control over the manufacturing process and prioritizing the timing of internal programs.

Our manufacturing capabilities encompass the full manufacturing process through quality control and quality assurance and are integrated with our project teams from discovery through development and commercial release. This structure enables us to efficiently transfer research stage product concepts into manufacturing. We have designed our manufacturing facility and processes to provide flexibility for the manufacture of different product candidates. We outsource sterilization and packaging services for our products.

We believe that we can continue to execute our commercial manufacturing to support DEXTENZA sales, to supply clinical materials for our current and future development programs for AXPAXLI and other product candidates, and to scale up our manufacturing processes for the potential commercialization of AXPAXLI.

Intellectual Property

Our success depends in part on our ability to obtain and maintain proprietary protection for our products, product candidates, technology and know-how, to operate without infringing the proprietary rights of others and to prevent others from infringing our proprietary rights. We rely on patent protection, trade secrets, know-how, continuing technological innovation and in-licensing opportunities to develop and maintain our proprietary position.

We have issued patents and/or patent applications pending for all of our commercial products and product candidates, as well as trade secrets to protect proprietary manufacturing processes. As of December 31, 2025, we owned or exclusively licensed in certain fields of use over 300 issued U.S. patents, pending U.S. patent applications, issued foreign patents and pending foreign patent applications.

Certain of our U.S. patents and applications, and their foreign counterparts, are owned by us and other U.S. patents and applications, and their foreign counterparts have been in-licensed from Incept.

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The existence of patent applications does not guarantee that a patent will issue, or that any patent that does issue will cover the product or product candidate. Issued patents are subject to validity, enforceability and infringement challenges by third parties with uncertain chances of success.

The term of individual patents depends upon the legal term for patents in the countries in which they are granted. In most countries, including the United States, the patent term is generally 20 years from the earliest claimed filing date of a patent application in the applicable country (not including provisional filings in the United States). In the United States, a patent’s term may, in certain cases, be lengthened by patent term adjustment, which compensates a patentee for administrative delays by the United States Patent and Trademark Office in examining and granting a patent, or may be shortened if a patent is terminally disclaimed over a commonly owned patent or a patent naming a common inventor and having an earlier expiration date. The Drug Price Competition and Patent Term Restoration Act of 1984, or the Hatch-Waxman Act, permits a patent term extension of up to five years beyond the expiration date of a U.S. patent for certain patents as partial compensation for the length of time the drug is under regulatory review while the patent is in force. A patent term extension cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval, only one patent applicable to each regulatory review period may be extended and only those claims covering the approved drug, a method for using it or a method for manufacturing it may be extended. Patent term extension is only available for the first commercial marketing or use of the product under the provision of law under which the regulatory review period occurred.

Similar provisions are available in the European Union and certain other foreign jurisdictions to extend the term of a patent that covers an approved drug. In the future, if and when our product candidates receive approval by the FDA or foreign regulatory authorities, where applicable, we expect to apply for patent term extensions on certain issued patents covering those products, depending upon the length of the clinical trials for each drug and other factors. The expiration dates referred to above are without regard to potential patent term extension or other market exclusivity that may be available to us.

We may rely, in some circumstances, on trade secrets to protect our technology. However, trade secrets can be difficult to protect. We seek to protect our proprietary technology and processes, in part, by confidentiality agreements with our employees, and certain consultants, scientific advisors and contractors. We also seek to preserve the integrity and confidentiality of our data.

The following is a summary of patents and patent applications that cover our commercial products and potentially cover our product candidates:

AXPAXLI (axitinib intravitreal hydrogel)

We own an issued patent in the United States that covers this product candidate, with a current expiration date in 2044 as well as corresponding pending U.S. and foreign counterpart applications, together with other issued patents in the United States and patents in certain foreign jurisdictions that cover this product candidate, with current expiration dates in 2041, as well as corresponding pending U.S. and foreign counterpart applications.

OTX-TIC (travoprost intracameral hydrogel) for the treatment of OAG or OHT

We have licenses to a U.S. patent, and certain foreign counterparts, with current expiration dates in 2037 with corresponding pending U.S. and foreign counterparts. We own an issued patent in the United States and patents in certain foreign jurisdictions that cover this product candidate, with current expiration dates in 2041 as well as corresponding pending U.S. and foreign counterpart applications.

DEXTENZA (dexamethasone ophthalmic insert) 0.4 mg

We have licenses to U.S. patents, and certain foreign counterparts, with current expiration dates in 2030 that cover this product. We also own two U.S. patents that cover this product with current expiration dates in 2036 and 2037, and a pending U.S. patent application.

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DEXTENZA (dexamethasone ophthalmic insert) 0.4 mg for the treatment of allergic conjunctivitis

Licenses

Incept, LLC

In January 2012, we entered into an amended and restated license agreement, which we refer to as either the Prior Agreement or Original License, with Incept under which we hold an exclusive, worldwide, perpetual, irrevocable license under specified patents and technology owned or controlled by Incept to make, have made, use, offer for sale, sell, sublicense, have sublicensed, offer for sublicense and import, products delivered to or around the human eye for diagnostic, therapeutic or prophylactic purposes relating to all human ophthalmic diseases or conditions. This license covers a significant portion of the patent rights and the technology for DEXTENZA, and may cover certain aspects of other hydrogel platform technology product candidates, such as OTX-TIC, to the extent they were invented prior to the Effective Date (referred to below). The agreement supersedes an April 2007 license agreement between us and Incept. Amar Sawhney, our former President and Chief Executive Officer and former Executive Chairman of the Board of Directors, is a general partner of Incept.

On September 13, 2018, or the Effective Date, we entered into a second amended and restated license agreement, or the Second Amended Agreement, with Incept. The Second Amended Agreement amends and restates in full the Prior Agreement, to expand the scope of our intellectual property license and modify future intellectual property ownership and other rights thereunder.

License Rights; Ownership of Intellectual Property. We and Incept have agreed to expand the field of use of the exclusive, worldwide, perpetual, irrevocable license held by us under the Prior Agreement to include specified intellectual property rights and technology owned or controlled by Incept to make, have made, use, offer for sale, sell, sublicense, have sublicensed, offer for sublicense and import, (i) consistent with the Prior Agreement, products delivered to or around the human eye for diagnostic, therapeutic or prophylactic purposes relating to all human ophthalmic diseases or conditions, or the Ophthalmic Field of Use, and (ii) as a result of the expansion of the scope of the Original License, products delivered for the treatment of acute post-surgical pain or for the treatment of ear, nose and/or throat diseases or conditions, subject to specified exceptions, or the Additional Field of Use. We and Incept have further agreed to expand the field of use of the Original License for certain patents, patent applications and other rights pertaining to shape-changing hydrogel formulations thereunder, or the Shape-Changing IP, to include all fields except those involving the nerves and associated tissues specified in the Second Amended Agreement.

We will solely own, without a license to Incept, all intellectual property rights conceived solely by one or more individuals from our company, or the Company Individuals, after the Effective Date, subject to exceptions specified therein. Subject to certain exceptions specified in the Second Amended Agreement, Incept will own and license to the us (i) all intellectual property rights included in the Original License, or the Original IP, in the Ophthalmic Field of Use and the Additional Field of Use, (ii) intellectual property rights in the field of drug delivery conceived solely by the Company Individuals on or before the Effective Date, or Incept IP, and (iii) intellectual property rights in the field of drug delivery conceived by one or more Company Individuals jointly with one or more individuals from Incept, including Dr. Sawhney, or the Incept Individuals, after the Effective Date. These intellectual property rights are referred to as Joint IP, and, collectively with the Original IP and the Incept IP, as the Licensed IP.

Financial Terms. We and any of our sublicensees are obligated to pay Incept royalties as follows under the Second Amended Agreement: (i) consistent with the Prior Agreement, a royalty equal to a low single-digit percentage of net sales by us or our affiliates of products, devices, materials, or components thereof, or Licensed Products, including or covered by Original IP, excluding the Shape-Changing IP, in the Ophthalmic Field of Use; (ii) a royalty equal to a mid-single-digit percentage of net sales by us or our affiliates of Licensed Products including or covered by Original IP, excluding the Shape-Changing IP, in the Additional Field of Use; and (iii) a royalty equal to a low single-digit percentage of net sales by us or our affiliates of Licensed Products including or covered by Incept IP or Joint IP in the field of drug delivery. Royalty obligations under the Second Amended Agreement commence with the first commercial

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sale of a Licensed Product described above and terminate upon the expiration of the last-to-expire patents included in the Licensed IP, as applicable. Any sublicensee of us also will be obligated to pay Incept royalties on net sales of Licensed Products made by it and will be bound by the terms of the Second Amended Agreement to the same extent as us. Additionally, at its sole discretion, Incept may require, as a condition of any sublicense by us in the Additional Field of Use and in exchange for a reduction in the royalties owed on net sales of Licensed Products described above, payments equal to a mid-teen percentage of any upfront payment and, subject to certain conditions, other payments received by us from the sublicensee.

Patent Prosecution and Litigation. Incept will continue to have sole control and responsibility for ongoing prosecution of patents included in the Original IP, and we will have sole control and responsibility for ongoing prosecution of patents and patent applications included in or arising under the Incept IP or Joint IP. The parties have agreed to work together in good faith to enter into a separate agreement under which, subject to certain limitations, we would assume control of the prosecution of patents and patent applications included in or arising under the Shape-Changing IP. We have the right, subject to certain conditions, to bring suit against third parties who infringe the patents included in the Original IP in the Ophthalmic Field of Use or the Additional Field of Use, patents included in the Incept IP in the drug delivery filed, patents included in the Joint IP in the drug delivery field, and patents included in the Shape-Changing IP in all fields except as described above. We have also agreed, if requested by Incept, to enter into a joint defense and prosecution agreement for the purpose of allowing the parties to share confidential and attorney-client privileged information regarding the possible infringement of one or more patents covered by the Second Amended Agreement. We are responsible for all costs incurred in prosecuting any infringement action it brings.

Term and Termination. The Second Amended Agreement will expire on the later of (i) the expiration or disclaimer by us of the last valid claim of an issued and unexpired patent included in the Licensed IP or (ii) the final unappealable rejection or abandonment of the last pending patent application arising under the Licensed IP. Either party may terminate the Second Amended Agreement in the event of the other party’s insolvency, bankruptcy, or comparable proceedings, or if the other party materially breaches the agreement and does not cure such breach during a specified cure period.

AffaMed License Agreement

On October 29, 2020, we entered into the AffaMed License Agreement with AffaMed for the development and commercialization of DEXTENZA regarding ocular inflammation and pain following cataract surgery and allergic conjunctivitis, or collectively, the DEXTENZA Field, and for OTX-TIC, or collectively with DEXTENZA, the AffaMed Licensed Products, regarding OAG and OHT, or collectively, the TIC Field and, with the DEXTENZA Field, each a Field, in each case in mainland China, Taiwan, Hong Kong, Macau, South Korea, and the countries of the Association of Southeast Asian Nations, or collectively, the Territories. We retain development and commercialization rights for the AffaMed Licensed Products in the rest of the world.

Under the AffaMed License Agreement, we granted AffaMed (i) a non-exclusive, royalty-free, non-sublicensable license under certain of our intellectual property rights and know-how to use the AffaMed Licensed Products in connection with specified activities in accordance with a development plan agreed between the parties and (ii) an exclusive, royalty-bearing, sublicensable, non-transferable (subject to specified exceptions), license under certain of our intellectual property rights and know-how to commercialize the AffaMed Licensed Products in the applicable Field in the Territories. We have further agreed not to, and to cause its affiliates or agents not to, develop or commercialize in the Territories (i) the AffaMed Licensed Products outside of the applicable Fields and (ii) any other product containing the same active pharmaceutical ingredients as the AffaMed Licensed Products and administered into the anterior chamber of the eye, in each case without AffaMed’s prior written consent. AffaMed has agreed not to, and to cause its affiliates or agents not to, engage in the development, manufacture, or commercialization of any competing product in the Territories.

Under the terms of the AffaMed License Agreement, we received upfront payments and we also became eligible to receive additional payments upon the achievement of certain development and commercial milestones. There can be no guarantee, however, that any of the remaining milestones will be achieved. We are also entitled to receive tiered, escalating royalties on the net sales of the AffaMed Licensed Products ranging from a low-teen to low-twenties percentage. Royalties under the AffaMed License Agreement are payable on an AffaMed Licensed Product-by-AffaMed Licensed Product and jurisdiction-by-jurisdiction basis and are subject to potential reductions in specified circumstances, subject to a specified floor.

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Pursuant to the terms of the AffaMed License Agreement, we are generally responsible for expenses related to the development of the AffaMed Licensed Products in the applicable Fields in the Territories, provided that AffaMed (i) reimburse us a low-teen percentage of expenses incurred in connection with certain clinical trials conducted by us and designed to support marketing approval of the AffaMed Licensed Product by FDA or the European Medicines Agency, or the Global Studies; (ii) is solely responsible for expenses incurred in connection with territory-specific clinical trials that it conducts in furtherance of the development plan agreed between the parties in the applicable Fields in the Territories, or the Local Studies; and (iii) reimburse us in full for expenses incurred in connection with obtaining and maintaining regulatory approvals of the AffaMed Licensed Products in the applicable Fields in the Territories. In the event AffaMed declines to participate in a Global Study or to conduct a Local Study in any jurisdiction in which we determine to conduct such a study, we are relieved of our obligation to provide AffaMed clinical data from such study, other than safety data, unless AffaMed subsequently reimburses us in the amounts described above plus a prespecified premium.

AffaMed is further obligated, at its sole cost and expense, to use commercially reasonable efforts to commercialize the AffaMed Licensed Products in the applicable Fields in the Territories. The AffaMed License Agreement contemplates that the parties negotiate and enter into a future agreement requiring us to use commercially reasonable efforts to manufacture and supply finished drug products in sufficient quantity for clinical development and commercialization of the AffaMed Licensed Products in the applicable Fields in the Territories.

In accordance with its terms, the AffaMed License Agreement expires upon the expiration of the last royalty term for the last AffaMed Licensed Product in any applicable Field in the Territories. Either party may, subject to specified cure periods, terminate the AffaMed License Agreement in the event of the other party’s uncured breach. Either party may also terminate the AffaMed License Agreement under specified circumstances relating to the other party’s insolvency. During an established period following a change of control of us or our entry into a global licensing agreement that includes the Territories with a third party, we have the option to terminate the AffaMed License Agreement, subject to a specified notice period and the repayment of any costs and expenses incurred by AffaMed in connection with the AffaMed License Agreement, including upfront and milestone payments AffaMed has previously paid to us, at a prespecified premium. AffaMed has the right to terminate the AffaMed License Agreement at any time following the completion of a Phase 3 clinical trial to evaluate OTX-TIC.

Competition

The biotechnology and pharmaceutical industries are characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary products. While we believe that our technologies, knowledge, experience and scientific resources provide us with competitive advantages, potential competitors include large pharmaceutical and biotechnology companies, specialty pharmaceutical and generic drug companies, and compounding pharmacies. Potential competitors also include academic institutions, government agencies and other public and private research organizations that conduct research, seek patent protection and establish collaborative arrangements for research, development, manufacturing and commercialization. Many of our potential competitors have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals and marketing approved products than we do. These competitors also compete with us in recruiting and retaining qualified scientific and management personnel and 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.

The key competitive factors affecting the success of each of our product candidates, if approved for marketing, are likely to be efficacy, safety, method and frequency of administration, convenience, price, the level of generic competition and the availability of coverage and adequate reimbursement from government and other third-party payors.

Because the active pharmaceutical ingredients in our products and product candidates are available off-patent, or are soon to be available off-patent, competitors will be able to offer and sell products with the same active pharmaceutical ingredient as our products so long as these competitors do not infringe the patents that we own or license. For example, certain of our owned and licensed patents cover the composition of our products and product candidates and associated methods that relate to the hydrogel composition and drug-release features of the products and product candidates. As such, if a third party were able to design around the formulation and method patents that we own or license and create a different formulation using a different production process not covered by our owned or licensed

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patents or patent applications, we would likely be unable to prevent that third party from manufacturing and marketing its product.

Competitors to AXPAXLI

In wet AMD and diabetic retinal disease, AXPAXLI will compete with anti-VEGF compounds administered in their current formulation and prescribed for the treatment of wet AMD as these agents can in some instances deliver more than one or two months of therapeutic effect, as well as products based on gene therapy, if such products are approved.

Anti-VEGF products that are currently approved by the FDA for the treatment of wet AMD include Vabysmo (faricimab), Eylea HD (aflibercept 8 mg), Lucentis (ranibizumab), Eylea (aflibercept 2 mg), Beovu (brolicizumab), and Susvimo (ranibizumab Port Delivery System). Biosimilars to ranibizumab and aflibercept 2 mg are commercially available as well. Products that are currently approved by the FDA for the treatment of various diabetic retinal disease indications include Vabysmo, Eylea HD, Lucentis, Eylea, Beovu and Susvimo. The FDA-approved labels for Vabysmo and Eylea HD contemplate dosing as infrequently as once every 16 weeks for a proportion of patients for wet AMD and diabetic retinal disease. The cancer therapy Avastin (bevacizumab) is used off-label for the treatment of wet AMD and diabetic retinal disease as well. These treatments are only sparingly used for the treatment of non-proliferative diabetic retinopathy, though, largely due to the treatment burden.

Multiple companies, in various stages of development, are pursuing products for wet AMD that would be competitive with AXPAXLI. Programs in later-stage development include: Eyepoint Pharmaceuticals, which is pursuing a sustained-release bioerodible implant containing a TKI (vorolanib) using its Durasert-E technology and Kodiak Sciences, which is pursuing products based on its antibody biopolymer conjugate technology. In addition, there are several companies pursuing gene therapies to treat wet AMD including, 4D Molecular Therapeutics, Adverum Biotechnologies, which was acquired by Eli Lilly and Company in 2025, and RegenxBio. Programs in early phases of development include but are not limited to: Alcon, which is pursuing development of a TKI implant containing axitinib using its Print manufacturing technology; Glaukos, which is pursuing a sustained-release bioerodible implant containing a TKI (axitinib) through its Retina-XR delivery platform; and Roche, which is pursuing intravitreal products along with those delivered with its Port Delivery System technology.

Multiple companies, in various stages of development, are pursuing products for the treatment of diabetic retinal disease that would be competitive with AXPAXLI. Programs in later-stage development include: Kodiak Sciences, which is pursuing an anti-VEGF molecule built on its antibody polymer conjugate technology; RegenxBio, which is pursuing a suprachoroidal formulation of its gene therapy for the treatment of DR; Merck, which is pursuing a wingless-related integration site (Wnt) agonist for the treatment of DME; Opus Genetics; which is pursuing an oral treatment; and Eyepoint, which is pursuing a sustained-release bioerodible implant containing a TKI (vorolanib) using its Durasert-E technology for the treatment of DME.

Competitors to OTX-TIC

A number of therapies are currently available for the treatment of glaucoma in the United States. The most commonly used treatments for glaucoma in the United States are topical eye drops, including both branded and generic PGAs, along with combination therapies. Allergan, now owned by AbbVie, received approval in March 2020 of DURYSTA, a biodegradable bimatoprost intracameral implant consisting of a PGA and a biodegradable polymer matrix for the reduction of IOP in patients with OAG or OHT. In December 2023, Glaukos received marketing approval from the FDA for iDose, a PGA indicated for the reduction of IOP in patients with OHT or OAG. In addition, several other companies, in varying stages of development, have announced their intention to develop products for treatment of glaucoma using sustained-release therapy. These programs include but are not limited to: Glaukos, which is developing a second-generation formulation of the iDose, referred to as iDose TREX; AbbVie, which is pursuing an intracameral implant comprised of a PGA; PolyActiva, which is pursuing an ocular implant with latanoprost based on its Preziatechnology; and Spyglass Pharma, which is pursuing an intraocular lens which elutes bimatoprost.

Competitors to DEXTENZA

Icon Biosciences, Inc. received FDA approval of DEXYCU in February 2018. DEXYCU is an injection of dexamethasone at the time of surgery into the posterior chamber of the eye (behind the iris) to treat inflammation

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associated with cataract surgery. Icon Biosciences Inc. was subsequently bought by pSvidia Corporation in March 2018 and, at the same time, the new entity was renamed Eyepoint. Eyepoint launched DEXYCU commercially in the first quarter of 2019. DEXYCU lost separate government reimbursement as of January 1, 2023 and is no longer actively marketed. OMIDRIA, purchased by Rayner Surgical Group Limited, is a prescription medication used during cataract surgery. According to the OMIDRIA website, this product helps the black part in the center of the eye (pupil) stay open (dilated) during cataract surgery and decreases eye pain after surgery.

Government Regulation

Government authorities in the United States, at the federal, state and local level, and in other countries and jurisdictions, including the European Union, extensively regulate, among other things, the research, development, testing, manufacture, quality control, clearance, approval, pricing, sales, reimbursement, packaging, storage, recordkeeping, labeling, advertising, promotion, distribution, marketing, post-approval monitoring and reporting, and import and export of pharmaceutical products and medical devices. The processes for obtaining regulatory approvals in the United States and in foreign countries and jurisdictions, along with subsequent compliance with applicable statutes and regulations and other regulatory authorities, require the expenditure of substantial time and financial resources. The regulatory requirements applicable to product development, approval and marketing are subject to change, and regulations and administrative guidance often are revised or reinterpreted by government agencies in ways that may have a significant impact on our business.

Review and Approval of Drugs and Biologics in the United States

In the United States, the FDA approves and regulates drug products under the FDCA and related regulations. Drugs are also subject to other federal, state and local statutes and regulations. Biological products, or biologics, are licensed for marketing under the Public Health Service Act, or PHSA, and subject to regulation under the FDCA and related regulations, and other federal, state and local statutes and regulations. A company, institution, or organization which takes responsibility for the initiation and management of a clinical development program for such products is referred to as a sponsor. A sponsor seeking approval to market and distribute a new drug or biological product in the United States must typically undertake the following:

● review by an FDA advisory committee, where appropriate or if applicable;

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● payment of user fees pursuant to the Prescription Drug User Fee Act;

Preclinical Studies

Preclinical studies include laboratory evaluation of the purity and stability of the manufactured drug substance or active pharmaceutical ingredient and the formulated product, as well as in vitro and animal studies to assess the safety and activity of the investigational product for initial testing in humans and to establish a rationale for therapeutic use. These studies are generally referred to as IND-enabling studies. The conduct of preclinical studies is subject to federal regulations and requirements, including GLP regulations and standards and the United States Department of Agriculture’s Animal Welfare Act. The results of the preclinical tests, together with manufacturing information, analytical data, any available clinical data or literature and plans for clinical studies, among other things, are submitted to the FDA as part of an IND.

Companies usually must complete some long-term preclinical testing, such as animal tests of reproductive adverse events and carcinogenicity, and must also develop additional information about the chemistry and physical characteristics of the investigational product and finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the candidate product and, among other things, the manufacturer must develop methods for testing the identity, strength, quality and purity of the final product. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the candidate product does not undergo unacceptable deterioration over its shelf life.

With passage of the FDA’s Modernization Act 2.0 in December 2022, Congress eliminated provisions in both the FDCA and the PHSA that required animal testing in support of an NDA or BLA. While animal testing may still be conducted, the FDA was authorized to rely on alternative non-clinical tests, including cell-based assays, microphysiological systems, or bioprinted or computer models. In April 2025, the FDA released a roadmap to replace animal testing in preclinical safety studies with scientifically validated new approach methodologies, such as organ-on-a-chip systems and computational modeling, which are referred to as in silico models, as well as advanced in vitro assays.

The IND and IRB Processes

Clinical trials involve the administration of the investigational product to human subjects under the supervision of qualified investigators in accordance with GCP requirements, which include, among other things, the requirement that all research subjects provide their voluntary informed consent in writing before their participation in any clinical trial. Clinical trials are conducted under written study protocols detailing, among other things, the inclusion and exclusion criteria, the objectives of the study, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. A protocol for each clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND.

An IND is an exemption from the FDCA that allows an unapproved product candidate to be shipped in interstate commerce for use in an investigational clinical trial and a request for FDA authorization to administer an investigational drug to humans. Such authorization must be secured prior to interstate shipment and administration of any new drug or biologic that is not the subject of an approved NDA or BLA. In support of a request for an IND, sponsors must submit a protocol for each clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND. The FDA requires a 30-day waiting period after the filing of each IND before clinical trials may begin. This waiting period is designed to allow the FDA to review the IND to assure the safety and rights of patients and to help assure that the quality of the investigation will be adequate to permit an evaluation of the drug’s effectiveness and safety and of the biological product’s safety, purity and potency. At any time during this 30-day period, or thereafter, the FDA

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may raise concerns or questions about the conduct of the trials as outlined in the IND and impose a clinical hold or partial clinical hold. In this case, the IND sponsor and the FDA must resolve any outstanding concerns before clinical trials can begin.

In addition to the foregoing IND requirements, an IRB representing each institution participating in the clinical trial must review and approve the plan for any clinical trial before it commences at that institution, and the IRB must conduct continuing review and reapprove the study at least annually. The IRB must review and approve, among other things, the study protocol and informed consent information to be provided to study subjects. An IRB must operate in compliance with FDA regulations. An IRB can suspend or terminate approval of a clinical trial at its institution, or an institution it represents, if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the product candidate has been associated with unexpected serious harm to patients.

The FDA’s primary objectives in reviewing an IND are to assure the safety and rights of patients and to help assure that the quality of the investigation will be adequate to permit an evaluation of the drug’s effectiveness and safety and of the biological product’s safety, purity and potency. The decision to terminate development of an investigational drug or biological product may be made by either a health authority body such as the FDA, an IRB or ethics committee, or by us for various reasons. Additionally, some trials are overseen by an independent group of qualified experts organized by the trial sponsor, known as a data monitoring committee. This group provides authorization for whether or not a trial may move forward at designated check points based on access that only the group maintains to available data from the study. Suspension or termination of development during any phase of clinical trials can occur if it is determined that the participants or patients are being exposed to an unacceptable health risk.

Reporting Clinical Trial Results

Under the PHSA, sponsors of clinical trials of certain FDA-regulated products, including prescription drugs and biologics, are required to register and disclose certain clinical trial information on a public registry (clinicaltrials.gov) maintained by the U.S. National Institutes of Health, or NIH. In particular, information related to the product, patient population, phase of investigation, study sites and investigators and other aspects of the clinical trial is made public as part of the registration of the clinical trial. Although sponsors are also obligated to disclose the results of their clinical trials after completion, disclosure of the results can be delayed in some cases for up to two years after the date of completion of the trial. The NIH’s Final Rule on registration and reporting requirements for clinical trials became effective in 2017.

The PHSA grants the Secretary of Health and Human Services the authority to issue a notice of noncompliance to a responsible party for failure to submit clinical trial information as required. The responsible party, however, is allowed 30 days to correct the noncompliance and submit the required information. As of December 19, 2025, the FDA has issued eight notices of non-compliance, thereby signaling the government’s willingness to begin enforcing these requirements against non-compliant clinical trial sponsors. While these notices of non-compliance did not result in civil monetary penalties, the failure to submit clinical trial information to clinicaltrials.gov is a prohibited act under the FDCA with violations subject to potential civil monetary penalties of up to $10,000 for each day the violation continues. Violations may also result in injunctions and/or criminal prosecution or disqualification from federal grants.

Expanded Access to an Investigational Drug for Treatment Use

Expanded access, sometimes called “compassionate use,” is the use of investigational new drug products outside of clinical trials to treat patients with serious or immediately life-threatening diseases or conditions when there are no comparable or satisfactory alternative treatment options. The rules and regulations related to expanded access are intended to improve access to investigational drugs for patients who may benefit from investigational therapies. FDA regulations allow access to investigational drugs under an IND by the company or the treating physician for treatment purposes on a case-by-case basis for: individual patients (single-patient IND applications for treatment in emergency settings and non-emergency settings); intermediate-size patient populations; and larger populations for use of the drug under a treatment protocol or Treatment IND Application.

When considering an IND application for expanded access to an investigational product with the purpose of treating a patient or a group of patients, the sponsor and treating physicians or investigators will determine suitability when all of the following criteria apply: patient(s) have a serious or immediately life-threatening disease or condition, and there is no comparable or satisfactory alternative therapy to diagnose, monitor, or treat the disease or condition; the

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potential patient benefit justifies the potential risks of the treatment and the potential risks are not unreasonable in the context or condition to be treated; and the expanded use of the investigational drug for the requested treatment will not interfere initiation, conduct, or completion of clinical investigations that could support marketing approval of the product or otherwise compromise the potential development of the product.

There is no obligation for a sponsor to make its investigational products available for expanded access; however, as required by amendments to the FDCA included in the 21st Century Cures Act, or the Cures Act, passed in 2016, if a sponsor has a policy regarding how it responds to expanded access requests with respect to product candidates in development to treat serious diseases or conditions, it must make that policy publicly available. Sponsors are required to make such policies publicly available upon the earlier of initiation of a Phase 2 or Phase 3 study for a covered investigational product; or 15 days after the investigational product receives designation from the FDA as a breakthrough therapy, fast track product, or regenerative medicine advanced therapy. In October 2025, the FDA issued final guidance further clarifying the statutory and regulatory requirements governing expanded access.

In addition, on May 30, 2018, the Right to Try Act was signed into law. The law, among other things, provides a federal framework for certain patients to access certain investigational new drug products that have completed a Phase 1 clinical trial and that are undergoing investigation for FDA approval. Under certain circumstances, eligible patients can seek treatment without enrolling in clinical trials and without obtaining FDA permission under the FDA expanded access program. There is no obligation for a drug manufacturer to make its drug products available to eligible patients as a result of the Right to Try Act, but the manufacturer must develop an internal policy and respond to patient requests according to that policy.

Human Clinical Studies in Support of an NDA or BLA

Clinical trials involve the administration of the investigational product to human subjects under the supervision of qualified investigators in accordance with GCP requirements, which include, among other things, the requirement that all research subjects provide their informed consent in writing before their participation in any clinical trial. Clinical trials are conducted under written study protocols detailing, among other things, the inclusion and exclusion criteria, the objectives of the study, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated.

Human clinical trials are typically conducted in three sequential phases, which may overlap or be combined:

In some cases, the FDA may approve an NDA or BLA for a product candidate but require the sponsor to conduct additional clinical trials to further assess the product candidate’s safety and effectiveness after approval. Such post-approval trials, typically referred to as Phase 4 clinical trials, may be conducted after initial marketing approval. These trials are used to gain additional experience from the treatment of a larger number of patients in the intended treatment group. In certain instances, the FDA may mandate the performance of Phase 4 clinical trials, such as to verify clinical benefit in the case of products approved under accelerated approval regulations. Failure to exhibit due diligence with regard to conducting mandatory Phase 4 clinical trials could result in withdrawal of FDA approval for products.

A clinical trial may combine the elements of more than one phase, and the FDA often requires more than one Phase 3 trial to support marketing approval of a product candidate. A company’s designation of a clinical trial as being of a particular phase is not necessarily indicative that the study will be sufficient to satisfy the FDA requirements of that

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phase because this determination cannot be made until the protocol and data have been submitted to and reviewed by the FDA. Moreover, as noted above, a pivotal trial is a clinical trial that is believed to satisfy FDA requirements for the evaluation of a product candidate’s safety and efficacy such that it can be used, alone or with other pivotal or non-pivotal trials, to support regulatory approval. Generally, pivotal trials are Phase 3 trials, but they may be Phase 2 trials if the design provides a well-controlled and reliable assessment of clinical benefit, particularly in an area of unmet medical need.

In December 2022, with the passage of Food and Drug Omnibus Reform Act, or FDORA, Congress required sponsors to develop and submit a diversity action plan, or DAP, for each Phase 3 clinical trial or any other “pivotal study” of a new drug or biological product. These plans are meant to encourage the enrollment of more diverse patient populations in late-stage clinical trials of FDA-regulated products. In June 2024, as mandated by FDORA, the FDA issued draft guidance outlining the general requirements for DAPs.

On January 27, 2025, in response to an executive order issued by President Trump on January 21, 2025, relating to Diversity, Equity and Inclusion programs, the FDA removed the draft DAP guidance from its website. That action, along with similar actions by the Trump Administration to remove many other healthcare webpages, is currently the subject of ongoing litigation. On July 3, 2025, the U.S. District Court for the District of Columbia ruled that the Trump Administration’s actions to remove these webpages, including the draft DAP guidance, are unlawful under the Administrative Procedure Act. The court ordered the restoration of many of these webpages. In late July 2025, the FDA restored the draft DAP guidance to its website with a statement that “information on this page may be modified and/or removed in the future subject to the terms of the court’s order and implemented consistent with applicable law.” Accordingly, in light of these ongoing actions, there is considerable uncertainty surrounding the draft DAP guidance and how the FDA will consider DAPs in connection with its review of NDAs and BLAs.

In September 2025, the FDA issued final guidance with updated recommendations for GCPs aimed at modernizing the design and conduct of clinical trials. The updates are intended to help pave the way for more efficient clinical trials to facilitate the development of medical products. The final guidance is adopted from the International Council for Harmonisation’s recently updated E6(R3) final guideline that was developed to enable the incorporation of rapidly developing technological and methodological innovations into the clinical trial enterprise. In September 2024, the FDA finalized guidance outlining recommendations for the implementation of decentralized clinical trials.

Clinical Trials Outside the United States in Support of FDA Approval

In connection with our clinical development program, we utilize trial sites outside the United States from time to time. When a foreign clinical trial is conducted under an IND, all IND requirements must be met unless waived. When a foreign clinical trial is not conducted under an IND, the sponsor must ensure that the trial complies with certain regulatory requirements of the FDA in order to use the trial as support for an IND or application for marketing approval. Specifically, the trials must be conducted in accordance with GCP, including undergoing review and receiving approval by an independent ethics committee, or IEC, and seeking and receiving informed consent from subjects. GCP requirements encompass both ethical and data integrity standards for clinical studies. The FDA’s regulations are intended to help ensure the protection of human subjects enrolled in non-IND foreign clinical trials, as well as the quality and integrity of the resulting data. They further help ensure that non-IND foreign trials are conducted in a manner comparable to that required for IND trials.

The acceptance by the FDA of trial data from clinical trials conducted outside the United States in support of US approval may be subject to certain conditions or may not be accepted at all. In cases where data from foreign clinical trials are intended to serve as the sole basis for marketing approval in the United States, the FDA will generally not approve the application on the basis of foreign data alone unless (i) the data are applicable to the U.S. population and U.S. medical practice; (ii) the trials were performed by clinical investigators of recognized competence and pursuant to GCP regulations; and (iii) the data may be considered valid without the need for an on-site inspection by the FDA, or if the FDA considers such inspection to be necessary, the FDA is able to validate the data through an on-site inspection or other appropriate means. In December 2025, in the context of negotiations involving reauthorization of Prescription Drug User Fee Act, or PDUFA, the FDA proposed cutting fees for companies conducting clinical development programs in the United States, rather than abroad. It is unclear whether and how this proposal will be adopted and finalized.

In addition, even where the foreign trial data are not intended to serve as the sole basis for approval, the FDA will not accept the data as support for an application for marketing approval unless the trial is well-designed and well-

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conducted in accordance with GCP requirements and the FDA is able to validate the data from the trial through an onsite inspection if deemed necessary. Many foreign regulatory authorities have similar approval requirements. In addition, such foreign trials are subject to the applicable local laws of the foreign jurisdictions where the trials are conducted.

Interactions with FDA During the Clinical Development Program

Following the clearance of an IND and the commencement of clinical trials, the sponsor will continue to have interactions with the FDA. Progress reports detailing the results of clinical trials must be submitted at least annually to the FDA and more frequently if serious adverse events occur. These reports must include a development safety update report. In addition, IND safety reports must be submitted to the FDA for any of the following: serious and unexpected suspected adverse reactions; findings from other studies or animal or in vitro testing that suggest a significant risk in humans exposed to the product candidate; and any clinically important increase in the occurrence of a serious suspected adverse reaction over that listed in the protocol or investigator brochure. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, or at all. The FDA will typically inspect one or more clinical sites to assure compliance with GCP and the integrity of the clinical data submitted.

In addition, sponsors are given opportunities to meet with the FDA at certain points in the clinical development program. Specifically, sponsors may meet with the FDA prior to the submission of an IND (pre-IND meeting), at the end of Phase 2 clinical trial (EOP2 meeting) and before an NDA or BLA is submitted (pre-NDA or pre-BLA meeting). Meetings at other times may also be requested. There are five types of meetings that occur between sponsors and the FDA. Type A meetings are those that are necessary for an otherwise stalled product development program to proceed or to address an important safety issue. Type B meetings include pre-IND and pre-NDA/pre-BLA meetings, as well as end of phase meetings such as EOP2 meetings. A Type C meeting is any meeting other than a Type A or Type B meeting regarding the development and review of a product, including for example meetings to facilitate early consultations on the use of a biomarker as a new surrogate endpoint that has never been previously used as the primary basis for product approval in the proposed context of use. A Type D meeting is focused on a narrow set of issues, which should be limited to no more than two focused topics and should not require input from more than three disciplines or Divisions. Finally, INTERACT meetings are intended for novel products and development programs that present unique challenges in the early development of an investigational product.

These meetings provide an opportunity for the sponsor to share information about the data gathered to date with the FDA and for the FDA to provide advice on the next phase of development. For example, at an EOP2 meeting, a sponsor may discuss its Phase 2 clinical results and present its plans for the pivotal Phase 3 clinical trial(s) that it believes will support the approval of the new product. Such meetings may be conducted in person, via teleconference/videoconference or written response only with minutes reflecting the questions that the sponsor posed to the FDA and the FDA’s responses. The FDA has indicated that its responses, as conveyed in meeting minutes and advice letters, only constitute mere recommendations and/or advice made to a sponsor and, as such, sponsors are not bound by such recommendations and/or advice. From a practical perspective, a sponsor’s failure to follow the FDA’s recommendations for design of a clinical program may put the program at significant risk of failure.

Special Protocol Assessment Agreements

A Special Protocol Assessment, or SPA, agreement is an agreement between a sponsor and the FDA on the design and size of studies and clinical trials that can be used for approval of a drug or biological product. The FDA’s guidance on such agreements states that an agreement may not be changed by the sponsor or the agency unless through a written agreement of the two entities or if FDA determines there is a substantial scientific issue essential to determining the safety or effectiveness of the drug or the safety, potency or purity of the biologic product. The protocols that are eligible for SPA agreements are: animal carcinogenicity protocols, final product stability protocols and clinical protocols for Phase 3 trials where the data will form the primary basis for an efficacy claim.

The FDA may meet with sponsors, provided certain conditions are met, for the purpose of reaching a SPA agreement on the design and size of clinical trials intended to form the primary basis of an efficacy claim in a marketing application. If a sponsor makes a reasonable written request to meet with the FDA for the purpose of reaching agreement on the design and size of a clinical trial, then the FDA will meet with the sponsor. If an agreement is reached, the FDA will reduce the agreement to writing and make it part of the administrative record. An agreement may not be changed by the sponsor or FDA after the trial begins, except with the written agreement of the sponsor and FDA, or if the director of the FDA reviewing division determines that “a substantial scientific issue essential to determining the safety or

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effectiveness of the investigational product was identified after the testing began. If a sponsor and the FDA meet regarding the design and size of a clinical trial and the parties cannot agree that the trial design is adequate to meet the goals of the sponsor, the FDA will clearly state the reasons for the disagreement in a letter to the sponsor.

Manufacturing and Other Regulatory Requirements

Concurrently with clinical trials, sponsors usually complete additional animal safety studies, develop additional information about the chemistry and physical characteristics of the product candidate and finalize a process for manufacturing commercial quantities of the product candidate in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other criteria, the sponsor must develop methods for testing the identity, strength, quality, and purity of the finished product. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

Specifically, the FDA’s regulations require that pharmaceutical products be manufactured in specific approved facilities and in accordance with cGMPs. The cGMP regulations include requirements relating to organization of personnel, buildings and facilities, equipment, control of components and product containers and closures, production and process controls, packaging and labeling controls, holding and distribution, laboratory controls, records and reports and returned or salvaged products. Manufacturers and other entities involved in the manufacture and distribution of approved pharmaceuticals are required to register their establishments with the FDA and some state agencies, and they are subject to periodic unannounced inspections by the FDA for compliance with cGMPs and other requirements. Inspections must follow a “risk-based schedule” that may result in certain establishments being inspected more frequently. Manufacturers may also have to provide, on request, electronic or physical records regarding their establishments. Delaying, denying, limiting, or refusing inspection by the FDA may lead to a product being deemed to be adulterated. Changes to the manufacturing process, specifications or container closure system for an approved product are strictly regulated and often require prior FDA approval before being implemented. The FDA’s regulations also require, among other things, the investigation and correction of any deviations from cGMP and the imposition of reporting and documentation requirements upon the sponsor and any third-party manufacturers involved in producing the approved product.

The PREVENT Pandemics Act, which was enacted in December 2022, clarifies that foreign drug manufacturing establishments are subject to registration and listing requirements even if a drug or biologic undergoes further manufacture, preparation, propagation, compounding, or processing at a separate establishment outside the United States prior to being imported or offered for import into the United States. In May 2025, the FDA disclosed plans to expand its use of unannounced inspections of foreign manufacturing facilities that produce drugs and biologics distributed in the United States.

Pediatric Studies

Under the Pediatric Research Equity Act, or PREA, applications and certain types of supplements to applications must contain data that are adequate to assess the safety and effectiveness of the product for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The sponsor must submit an initial Pediatric Study Plan, or PSP, within 60 days of an EOP2 meeting or as may be agreed between the sponsor and the FDA. Those plans must contain an outline of the proposed pediatric study or studies the sponsor plans to conduct, including study objectives and design, age groups, relevant endpoints and statistical approach, or a justification for not including such detailed information, and any request for a deferral of pediatric assessments or a full or partial waiver of the requirement to provide data from pediatric studies along with supporting information. The sponsor and the FDA must reach agreement on a final plan. A sponsor can submit amendments to an agreed-upon initial PSP at any time if changes to the pediatric plan need to be considered based on data collected from nonclinical studies, early phase clinical trials, and/or other clinical development programs.

The FDA may, on its own initiative or at the request of the sponsor, grant deferrals for submission of some or all pediatric data until after approval of the product for use in adults, or full or partial waivers from the pediatric data requirements. A deferral may be granted for several reasons, including a finding that the product or therapeutic candidate is ready for approval for use in adults before pediatric trials are complete or that additional safety or effectiveness data needs to be collected before the pediatric trials begin. Pursuant to the Food and Drug Administration Safety and Innovation Act of 2012, or FDASIA, the FDA must send a PREA Non-Compliance letter to sponsors who have failed to

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submit their pediatric assessments required under PREA, have failed to seek or obtain a deferral or deferral extension or have failed to request approval for a required pediatric formulation. It further requires the FDA to publicly post the PREA Non-Compliance letter and sponsor’s response. Unless otherwise required by regulation, the pediatric data requirements do not apply to products with orphan designation, although the FDA has recently taken steps to limit what it considers abuse of this statutory exemption in PREA by announcing that it does not intend to grant any additional orphan drug designations for rare pediatric subpopulations of what is otherwise a common disease. The FDA also maintains a list of diseases that are exempt from PREA requirements due to low prevalence of disease in the pediatric population. In May 2023, the FDA issued new draft guidance that further describes the pediatric study requirements under PREA.

Section 505(b)(2) NDAs

NDAs for most new drug products are based on two full clinical studies which must contain substantial evidence of the safety and efficacy of the proposed new product. These applications are submitted under Section 505(b)(1) of the FDCA. The FDA is, however, authorized to approve an alternative type of NDA under Section 505(b)(2) of the FDCA. This type of application allows the sponsor to rely, in part, on the FDA’s previous findings of safety and efficacy for a similar product, or published literature. Specifically, Section 505(b)(2) applies to NDAs for a drug for which the investigations made to show whether or not the drug is safe for use and effective in use and relied upon by the sponsor for approval of the application “were not conducted by or for the sponsor and for which the sponsor has not obtained a right of reference or use from the person by or for whom the investigations were conducted.”

Section 505(b)(2) thus authorizes the FDA to approve an NDA based on safety and effectiveness data that were not developed by the sponsor. NDAs filed under Section 505(b)(2) may provide an alternate and potentially more expeditious pathway to FDA approval for new or improved formulations or new uses of previously approved products. If the 505(b)(2) sponsor can establish that reliance on the FDA’s previous approval is scientifically appropriate, the sponsor may eliminate the need to conduct certain preclinical or clinical studies of the new product. The FDA may also require companies to perform additional studies or measurements to support the change from the approved product. The FDA may then approve the new drug candidate for all or some of the label indications for which the referenced product has been approved, as well as for any new indication sought by the Section 505(b)(2) sponsor.

If we obtain favorable results in our clinical trials, we plan to submit NDAs for our product candidates under Section 505(b)(2).

Acceptance and Review of NDAs and BLAs

Assuming successful completion of the required clinical testing, the results of the preclinical studies and clinical trials, along with information relating to the product’s chemistry, manufacturing, controls, safety updates, patent information, abuse information and proposed labeling, are submitted to the FDA as part of an application requesting approval to market the product candidate for one or more indications. Data may come from company-sponsored clinical trials intended to test the safety and efficacy of a product’s use or from a number of alternative sources, including studies initiated by investigators. To support marketing approval, the data submitted must be sufficient in quality and quantity to establish the safety and efficacy of a drug product and the safety, potency and purity of the biological product to the satisfaction of the FDA.

The fee required for the submission and review of an application under PDUFA is substantial (for example, for FY2026 this application fee is approximately $4.7 million), and the sponsor of an approved application is also subject to an annual program fee, which for FY2026 is currently set at $442,213 per eligible prescription product. These fees are typically adjusted annually, and exemptions and waivers may be available under certain circumstances, such as where a waiver is necessary to protect the public health, where the fee would present a significant barrier to innovation, or where the sponsor is a small business submitting its first human therapeutic application for review.

The FDA conducts a preliminary review of all applications within 60 days of receipt and must inform the sponsor at that time or before whether an application is sufficiently complete to permit substantive review. In pertinent part, FDA’s regulations state that an application “shall not be considered as filed until all pertinent information and data have been received” by the FDA. In the event that FDA determines that an application does not satisfy this standard, it will issue a Refuse to File, or RTF, determination to the sponsor. Typically, an RTF will be based on administrative incompleteness, such as clear omission of information or sections of required information; scientific incompleteness,

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such as omission of critical data, information or analyses needed to evaluate safety and efficacy or provide adequate directions for use; or inadequate content, presentation, or organization of information such that substantive and meaningful review is precluded. The FDA may request additional information rather than accept an application for filing. In this event, the application must be resubmitted with the additional information. The resubmitted application is also subject to review before the FDA accepts it for filing.

After the submission is accepted for filing, the FDA begins an in-depth substantive review of the application. The FDA reviews the application to determine, among other things, whether the proposed product is safe and effective for its intended use, whether it has an acceptable purity profile and whether the product is being manufactured in accordance with cGMP. Under the goals and policies agreed to by the FDA under PDUFA, the FDA has ten months from the filing date in which to complete its initial review of a standard application that is a new molecular entity, and six months from the filing date for an application with “priority review.” The review process may be extended by the FDA for three additional months to consider new information or in the case of a clarification provided by the sponsor to address an outstanding deficiency identified by the FDA following the original submission. Despite these review goals, it is not uncommon for FDA review of an application to extend beyond the PDUFA target action date. The FDA’s ability to meet its review goals may be affected by a variety of factors, including government budget and funding levels, the ability to hire and retain key personnel and statutory, regulatory and policy changes. Average review times at the FDA have fluctuated in recent years.

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