Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements are presented in U.S. dollars in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and include the accounts of EyePoint Pharmaceuticals, Inc. and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts and disclosure of assets and liabilities at the date of the consolidated financial statements and the reported amounts and disclosure of revenues and expenses during the reporting periods. Significant management estimates and assumptions include, among others, those related to reserves for variable consideration related to product sales, revenue recognition for multiple-deliverable arrangements, recognition of expense in outsourced clinical trial agreements, recording of excess or obsolete inventory write-offs and reserves, and realization of deferred tax assets, and determining grant date fair value of stock options and other equity awards. Actual results could differ from these and other estimates and there may be changes to the Company’s estimates in future periods.
Foreign Currency	Foreign Currency The functional currency of the Company and each of its subsidiaries is the currency of the primary economic environment in which each such entity operates—the U.S. dollar or the Pound Sterling. Assets and liabilities of the Company’s foreign subsidiary are translated at period-end exchange rates. Amounts included in the consolidated statements of comprehensive loss and cash flows are translated at the weighted average exchange rates for the period. Gains and losses from currency translation are included in accumulated other comprehensive income as a separate component of stockholders’ equity on the consolidated balance sheets. Foreign currency gains or losses arising from transactions denominated in foreign currencies, whether realized or unrealized, are recorded in interest and other income, net in the consolidated statements of comprehensive loss and were not material for all periods presented.
Cash Equivalents	Cash Equivalents Cash equivalents represent highly liquid investments with maturities of three months or less at the date of purchase, principally consisting of institutional money market funds and investment-grade commercial paper and U.S. Treasury securities.
Marketable Securities	Marketable Securities Marketable securities consist of investments with an original or remaining maturity of greater than three months but less than one year at the date of purchase. The Company has historically classified its marketable securities as available-for-sale. Accordingly, the Company records these investments at fair value, with unrealized gains and losses excluded from earnings and reported, net of tax, in accumulated other comprehensive income, which is a component of stockholders’ equity. If the Company determines that a decline of any investment is other-than-temporary, the investment is written down to fair value. Marketable securities consisted of investment-grade commercial paper, U.S. Treasury securities, and U.S. Agency securities at December 31, 2024 and 2023. The Company’s investment policy, approved by the Board of Directors, includes guidelines relative to diversification and maturities designed to preserve principal and liquidity. The fair value of marketable securities is determined based on quoted market prices at the balance sheet date of the same or similar instruments. The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts through to the earlier of sale or maturity. Such amortization and accretion amounts are included in interest and other income, net in the consolidated statements of comprehensive loss. The cost of marketable securities sold is determined by the specific identification method.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash, cash equivalents, investments in marketable securities, and accounts receivable. The Company deposits its cash in financial institutions. At times, such deposits may be in excess of insured limits. The Company’s investment policy, approved by the Company’s Board of Directors, includes guidelines relative to diversification and maturities designed to preserve principal and liquidity. As of December 31, 2024, accounts receivable from ANI Pharmaceuticals, Inc. (ANI), formerly Alimera Sciences, Inc., accounted for 72.3% and accounts receivable from OncoSil Medical Ltd. accounted for 16.5% of total accounts receivable, respectively. For the year ended December 31, 2024, revenues from ANI accounted for 93.6% of total revenues. As of December 31, 2023, accounts receivable from ANI and Ocumension Therapeutics accounted for 67.8% and 15.7% of total accounts receivable, respectively. For the year ended December 31, 2023, revenues from ANI and Besse Medical accounted for 73.2% and 17.2% of total revenues, respectively.
Fair Value Measurements	Fair Value Measurements The Company accounts for certain assets and liabilities at fair value. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Company categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are: • Level 1 – Inputs are quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets and liabilities. • Level 2 – Inputs are directly or indirectly observable in the marketplace, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities with insufficient volume or infrequent transaction (less active markets). • Level 3 – Inputs are unobservable estimates that are supported by little or no market activity and require the Company to develop its own assumptions about how market participants would price the assets or liabilities. The Company’s cash equivalents and marketable securities are classified within Level 1 or Level 2 on the basis of valuations using quoted market prices or alternative pricing sources and models utilizing market observable inputs, respectively. The marketable securities have been valued on the basis of valuations provided by third-party pricing services, as derived from such services’ pricing models. Inputs to the models may include, but are not limited to, reported trades, executable bid and ask prices, broker/dealer quotations, prices or yields of securities with similar characteristics, benchmark curves or information pertaining to the issuer, as well as industry and economic events. The pricing services may use a matrix approach, which considers information regarding securities with similar characteristics to determine the valuation for a security, and have been classified as Level 2. The carrying amounts of accounts receivable, accounts payable and accrued expenses approximate fair value because of their short-term maturity.
Accounts and Other Receivables, Net	Accounts and Other Receivables, Net Receivables arise primarily from the Company’s products sold in the U.S. The balance in accounts and other receivables, net consists primarily of amounts due from customers, net of applicable revenue reserves. The majority of the Company’s accounts receivable have standard payment terms that require payment within 30-60 days. The Company performs ongoing credit evaluations of its customers’ financial condition and continuously monitor collections and payments from its customers and analyzes accounts that are past due for collectability. The allowance for credit losses is estimated based on the Company’s analysis of trends in overall receivables aging, specific identification of certain receivables that are at risk of not being paid, past collection experience and current economic trends. Given the nature and limited history of collectability of the Company’s accounts receivable, the Company recorded no allowance for credit losses as of December 31, 2024 and 2023.
Inventory	Inventory Inventory is stated at the lower of cost or net realizable value, net on a first-in, first-out (FIFO) basis. Capitalization of inventory costs begins after FDA approval of a product. Prior thereto, inventory costs of products and product candidates are recorded as research and development expense, even if this inventory may later be sold as commercial product. The Company assesses the recoverability of inventory and writes down any excess and obsolete inventories to their estimated realizable value in the period in which the impairment is first identified. Write-downs are based on the age of the inventory, lower of cost or market, along with significant management judgments concerning future demands for the inventory. Such impairment charges, should they occur, are recorded within cost of sales. The determination of whether inventory costs will be realizable requires estimates by management. If actual market conditions are less favorable than management's projections, additional write-downs of inventory might be recorded in future periods. Cost of sales consists of costs associated with the manufacture of YUTIQ® and DEXYCU®, certain period costs for DEXYCU® product revenue, product shipping, and, as applicable, royalty expense. The inventory costs for YUTIQ® include purchases of various components, the active pharmaceutical ingredient (API) and direct labor and overhead for the product manufactured in the Company’s Watertown, Massachusetts facility. The inventory costs for DEXYCU® include purchased components, the API and third-party manufacturing and assembly. On November 1, 2022, the CMS published in the Federal Register the Calendar Year (CY) 2023 Medicare Hospital Outpatient Prospective Payment System and ASC Payment System Final Rule (Final Rule). The Final Rule terminated the pass-through related separate payment for DEXYCU, which was no longer separately reimbursed by Medicare as of January 1, 2023, when furnished in hospital outpatient departments and ASC settings. In connection with the change in CMS reimbursement rules on November 1, 2022, the Company recorded impairment charge of $0 and $0.5 million for the years ended December 31, 2024 and 2023, respectively, associated with the write-off of excess DEXYCU® units.
Debt and Equity Instruments	Debt and Equity Instruments Debt and equity instruments are classified as either liabilities or equity in accordance with the substance of the contractual arrangement.
Property and Equipment	Property and Equipment Property and equipment are recorded at cost and depreciated over their estimated useful lives (generally three to five years) using the straight-line method. Leasehold improvements are amortized on a straight-line basis over the shorter of the remaining non-cancellable lease term or their estimated useful lives. Repair and maintenance costs are expensed as incurred. When assets are retired or sold, the assets and accumulated depreciation are derecognized from the respective accounts and any gain or loss is recognized.
Leases	Leases The Company is a party to two operating leases, the Company's headquarters in Watertown, Massachusetts, in which it leases office, laboratory, and manufacturing operations facilities and the Company's new standalone manufacturing facility, including office and lab space located at 600 Commerce Drive, Northbridge, Massachusetts (see Note 8). The Company determines whether an arrangement is or contains a lease at inception. Leases are recognized on the consolidated balance sheets as ROU assets, current lease liabilities and noncurrent lease liabilities. ROU assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Lease liabilities and their corresponding ROU assets are recorded based on the present value of lease payments over the expected remaining lease term. For this purpose, the Company considers only payments that are fixed and in-substance fixed at lease commencement. ROU assets may also be adjusted for items such as prepayments and lease incentives. The interest rate implicit in a lease contract is typically not readily determinable. As a result, the Company utilizes its incremental borrowing rate, which is the rate incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, amortization expense and interest expense are recognized over the lease term.
Revenue Recognition	Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, Revenue from Contracts with Customers (ASC 606), the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within the contract, determines those that are performance obligations and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. Sales, value-add and other taxes collected on behalf of third parties are excluded from revenue. Product sales, net — Effective January 2023, commercial sales of DEXYCU® were no longer supported by the Company, remaining available only through specialty distributors. Effective May 2023, YUTIQ® has been and continues to be sold under commercial supply agreements with Alimera Sciences, Inc. (Alimera) and Ocumension Therapeutics (Ocumension). On September 16, 2024, ANI announced the completion of the acquisition of Alimera. The acquisition does not impact the terms of the commercial supply agreements (see Note 3). The current supply agreement between the Company and ANI for the supply of YUTIQ® will not renew and, effective June 1, 2025, the Company will no longer be responsible for manufacturing of YUTIQ® for the U.S. market. Reserves for variable consideration — Product sales were recorded at the wholesale acquisition costs, net of applicable reserves for variable consideration. Components of variable consideration included trade discounts and allowances, provider chargebacks and discounts, payor rebates, product returns, and other allowances that were offered within contracts between the Company and its Distributors, payors and other contracted purchasers relating to the Company’s product sales. These reserves were based on the amounts earned, or to be claimed on the related sales, and were classified either as reductions of product revenue and accounts receivable or a current liability, depending on how the amount was to be settled. Overall, these reserves reflected the Company’s best estimates of the amount of consideration to which it was entitled based on the terms of the respective underlying contracts. The actual amounts of consideration ultimately received may differ from the Company’s estimates. If actual results in the future vary from the estimates, the Company adjusts product revenue and earnings in the period such variances become known. Distribution fees — The Company compensated its Distributors for services explicitly stated in the Company’s contracts and were recorded as a reduction of revenue in the period the related product sale was recognized. Provider chargebacks and discounts — Chargebacks were discounts that represented the estimated obligations resulting from contractual commitments to sell products at prices lower than the list prices charged to the Company’s Distributors. These Distributors charged the Company for the difference between what they paid for the product and the Company’s contracted selling price. These reserves were established in the same period that the related revenue was recognized, resulting in a reduction of product revenue and the establishment of a current liability which was included in accrued expenses and other current liabilities on the consolidated balance sheets. Reserves for chargebacks consisted of amounts that the Company expected to pay for units that remained in the distribution channel inventories at each reporting period-end that the Company expected to be sold under a contracted selling price, and chargebacks that Distributors had claimed, but for which the Company had not yet settled. Government rebates— The Company was subject to discount obligations under state Medicaid programs and Medicare. These reserves were recorded in the same period the related revenue was recognized, resulting in a reduction of product revenue and the establishment of a current liability which was included in accrued expenses and other current liabilities on the consolidated balance sheets. The Company’s liability for these rebates consisted of invoices received for claims from prior quarters that had not been paid or for which an invoice had not yet been received, estimates of claims for the current quarter, and estimated future claims that would be made for product that had been recognized as revenue, but which remained in the distribution channel inventories at the end of each reporting period. Payor rebates — The Company contracted with certain private payor organizations, primarily insurance companies, for the payment of rebates with respect to utilization of its products. The Company estimated these rebates and recorded such estimates in the same period the related revenue was recognized, resulting in a reduction of product revenue and the establishment of a current liability. Co-Payment assistance — The Company offered co-payment assistance to commercially insured patients meeting certain eligibility requirements. The calculation of the accrual for co-pay assistance was based on an estimate of claims and the cost per claim that the Company expected to receive associated with product that had been recognized as revenue. Product returns — The Company generally offered a limited right of return based on its returned goods policy, which included damaged product and remaining shelf life. The Company estimated the amount of its product sales that may be returned and recorded this estimate as a reduction of revenue in the period the related product revenue was recognized, as well as reductions to trade receivables, net on the consolidated balance sheets. License and collaboration agreement revenue — The Company analyzes each element of its license and collaboration arrangements to determine the appropriate revenue recognition. The terms of the license agreement may include payment to the Company of non-refundable upfront license fees, milestone payments if specified objectives are achieved, and/or royalties on product sales. The Company recognizes revenue from upfront payments at a point in time, typically upon fulfilling the delivery of the associated intellectual property to the customer. For licenses that are combined with other promises, the Company determines whether the combined performance obligation is satisfied over time or at a point in time, when (or as) the associated performance obligation in the contract is satisfied. If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products or services underlying each performance obligation. The Company determines standalone selling prices based on the price at which the performance obligation is sold separately. If the standalone selling price is not observable through past transactions, the Company estimates the standalone selling price taking into account available information such as market conditions and internally approved pricing guidelines related to the performance obligations. The Company recognizes sales-based milestone payments as revenue upon the achievement of the cumulative sales amount specified in the contract in accordance with ASC 606-10-55-65. For those milestone payments which are contingent on the occurrence of particular future events, the Company determines that these need to be considered for inclusion in the calculation of total consideration from the contract as a component of variable consideration using the most-likely amount method. As such, the Company assesses each milestone to determine the probability and substance behind achieving each milestone. Given the inherent uncertainty associated with these future events, the Company will not recognize revenue from such milestones until there is a high probability of occurrence, which typically occurs near or upon achievement of the event. When determining the transaction price of a contract, an adjustment is made if payment from a customer occurs either significantly before or significantly after performance, resulting in a significant financing component. Applying the practical expedient in paragraph 606-10-32-18, the Company does not assess whether a significant financing component exists if the period between when the Company performs its obligations under the contract and when the customer pays is one year or less. None of the Company’s contracts contained a significant financing component as of December 31, 2024 and 2023, respectively, nor during the respective years then ended. Royalties — The Company recognizes revenue from license arrangements with its commercial partners’ net sales of products. Such revenues are included as royalty income. In accordance with ASC 606-10-55-65, royalties are recognized when the subsequent sale of the commercial partner’s products occurs. The Company’s commercial partners are obligated to report their net product sales and the resulting royalty due to the Company typically within 60-days from the end of each quarter. Based on historical product sales, royalty receipts, and other relevant information, the Company recognizes royalty income each quarter and subsequently determines a true-up when it receives royalty reports and payment from its commercial partners. Historically, these true-up adjustments have been immaterial. Sale of Future Royalties — The Company has sold its rights to receive certain royalties on product sales. In the circumstance where the Company has sold its rights to future royalties under a royalty purchase agreement (RPA) and also maintains limited continuing involvement in the arrangement (but not significant continuing involvement in the generation of the cash flows that are due to the purchaser), the Company defers recognition of the proceeds it receives for the sale of royalty streams and recognizes such unearned revenue as revenue under the units-of-revenue method over the life of the underlying license agreement. Under the units-of-revenue method, amortization for a reporting period is calculated by computing a ratio of the proceeds received from the purchaser to the total payments expected to be made to the purchaser over the term of the agreement, and then applying that ratio to the period’s cash payment. Estimating the total payments expected to be received by the purchaser over the term of such arrangements requires management to use subjective estimates and assumptions. Changes to the Company’s estimate of the payments expected to be made to the purchaser over the term of such arrangements could have a material effect on the amount of revenues recognized in any particular period. Research Collaborations — The Company recognizes revenue over the term of the statements of work under any funded research collaborations. Revenue recognition for consideration, if any, related to a license option right is assessed based on the terms of any such future license agreement or is otherwise recognized at the completion of the research collaborations. Please refer to Note 3 for further details on the license and collaboration agreements into which the Company has entered and corresponding amounts of revenue recognized during the current and prior year periods. Cost of sales — Cost of sales consist of costs associated with the manufacture of YUTIQ® and DEXYCU®, certain period costs for DEXYCU® product revenue, product shipping, and as applicable, royalty expense. For the years ended December 31, 2024 and 2023, DEXYCU® product revenue-based royalty expense as a component of cost of sales was immaterial. Please refer to Note 3 for further details on the license and collaboration agreements into which the Company has entered and corresponding amounts of revenue recognized during the current and prior year periods. Deferred Revenue Amounts received prior to satisfying the above revenue recognition criteria are recorded as deferred revenue on the accompanying consolidated balance sheets. Amounts not expected to be recognized within one year following the balance sheet date are classified as non-current deferred revenue.
Research and Development	Research and Development Research and development costs are charged to operations as incurred. These costs include all direct costs, including cash and stock-based compensation and benefits for research, clinical development, quality assurance, quality control, operations and medical affairs personnel, third-party costs and services for clinical trials, clinical materials, pre-clinical programs, regulatory and medical affairs, external consultants, and other operational costs related to the Company’s research and development of its product candidates. The Company records accruals for estimated ongoing research and development costs, including costs with respect to outsourced agreements for clinical trials with contract research organizations (CROs). When recording these prepaid and accrued expenses, the Company analyzes progress of the studies, including the phase or completion of events, invoices received, payments made, contracted costs, communications with third-party vendors, and internal tracking of the work performed to date. Judgments and estimates are made in determining the prepaid and accrued balances at the end of any reporting period. Payments made in advance of services provided are recorded as prepaid research and development costs and recognized as expense in the period the expense is incurred. In determining the prepaid and accrued balances, management makes its assessments of the services performed based on various factors, including reporting from third-party CROs and internal tracking of work performed during the period, which are subject to management’s judgment. Actual results could differ from the Company’s estimates.
Stock-Based Compensation	Stock-Based Compensation Compensation cost related to share-based payment awards is based on the fair value of the instrument on the grant date and is recognized on a graded vesting basis over the requisite service period for each separately vesting tranche of the awards. The Company may also grant share-based payment awards that are subject to objectively measurable performance and service criteria. Compensation expense for performance-based awards begins at such time as it becomes probable that the respective performance conditions will be achieved. The Company continues to recognize the grant date fair value of performance-based awards through the vesting date of the respective awards so long as it remains probable that the related performance conditions will be satisfied. The Company estimates the fair value of stock option awards using the Black-Scholes option valuation model and the fair value of performance stock units, restricted stock units, and deferred stock units based on the observed grant date fair value of the underlying common stock.
Net Loss per Share	Net Loss per Share Basic net loss per share is computed by dividing the net loss by the weighted average number of common shares outstanding during the period. For periods in which the Company reports net income, diluted net income per share is determined by adding to the basic weighted average number of common shares outstanding the total number of dilutive common equivalent shares using the treasury stock method, unless the effect is anti-dilutive.
Comprehensive Loss	Comprehensive Loss Comprehensive loss is comprised of net loss, foreign currency translation adjustments and unrealized gains and losses on available-for-sale marketable securities.
Income Tax	Income Tax The Company accounts for income taxes under the asset and liability method. Deferred income tax assets and liabilities are computed for the expected future impact of differences between the financial reporting and income tax bases of assets and liabilities and for the expected future benefit to be derived from tax credits and loss carry forwards. Such deferred income tax computations are measured based on enacted tax laws and rates applicable to the years in which these temporary differences are expected to be recovered or settled. A valuation allowance is provided against net deferred tax assets if, based on the available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. The Company determines whether it is more likely than not that a tax position will be sustained upon examination. If it is not more likely than not that a position will be sustained, none of the benefit attributable to the position is recognized. The tax benefit to be recognized for any tax position that meets the more likely than not recognition threshold is calculated as the largest amount that is more than 50% likely of being realized upon resolution of the uncertainty. The Company accounts for interest and penalties related to uncertain tax positions as part of its income tax provision.
Recently Adopted and Recently Issued Accounting Pronouncements	Recently Adopted and Recently Issued Accounting Pronouncements New accounting pronouncements are issued periodically by the Financial Accounting Standards Board (FASB) and are adopted by the Company as of the specified effective dates. Unless otherwise disclosed below, the Company believes that recently issued and adopted pronouncements will not have a material impact on the Company’s financial position, results of operations and cash flows or do not apply to the Company’s operations. Recently Adopted Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07—Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU was issued to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The Company adopted ASU 2023-07 on January 1, 2024. Recently Issued Accounting Pronouncements In December 2023, the FASB issued ASU 2023-09—Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU was issued to address investor requests for more transparency about income tax information through improvements to income tax disclosure primarily related to the rate reconciliation and income taxes paid information, and to improve the effectiveness of income tax disclosures. This ASU is effective for public entities for annual periods beginning after December 15, 2024. Early adoption is permitted. ASU 2023-09 will be effective for the Company in the first quarter of its fiscal year ending December 31, 2025. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statement disclosures. In November 2024, the FASB issued ASU 2024-03—Income Statement —Reporting Comprehensive Income —Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in ASU 2024-03 address investor requests for more detailed expense information and require additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included on the face of the income statement. This guidance is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statement disclosures.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2024

The consolidated financial statements are presented in U.S. dollars in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and include the accounts of EyePoint Pharmaceuticals, Inc. and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts and disclosure of assets and liabilities at the date of the consolidated financial statements and the reported amounts and disclosure of revenues and expenses during the reporting periods. Significant management estimates and assumptions include, among others, those related to reserves for variable consideration related to product sales, revenue recognition for multiple-deliverable arrangements, recognition of expense in outsourced clinical trial agreements, recording of excess or obsolete inventory write-offs and reserves, and realization of deferred tax assets, and determining grant date fair value of stock options and other equity awards. Actual results could differ from these and other estimates and there may be changes to the Company’s estimates in future periods.

Foreign Currency

The functional currency of the Company and each of its subsidiaries is the currency of the primary economic environment in which each such entity operates—the U.S. dollar or the Pound Sterling.

Assets and liabilities of the Company’s foreign subsidiary are translated at period-end exchange rates. Amounts included in the consolidated statements of comprehensive loss and cash flows are translated at the weighted average exchange rates for the period. Gains and losses from currency translation are included in accumulated other comprehensive income as a separate component of stockholders’ equity on the consolidated balance sheets. Foreign currency gains or losses arising from transactions denominated in foreign currencies, whether realized or unrealized, are recorded in interest and other income, net in the consolidated statements of comprehensive loss and were not material for all periods presented.

Cash Equivalents

Cash equivalents represent highly liquid investments with maturities of three months or less at the date of purchase, principally consisting of institutional money market funds and investment-grade commercial paper and U.S. Treasury securities.

Marketable Securities

Marketable securities consist of investments with an original or remaining maturity of greater than three months but less than one year at the date of purchase. The Company has historically classified its marketable securities as available-for-sale. Accordingly, the Company records these investments at fair value, with unrealized gains and losses excluded from earnings and reported, net of tax, in accumulated other comprehensive income, which is a component of stockholders’ equity. If the Company determines that a decline of any investment is other-than-temporary, the investment is written down to fair value. Marketable securities consisted of investment-grade commercial paper, U.S. Treasury securities, and U.S. Agency securities at December 31, 2024 and 2023. The Company’s investment policy, approved by the Board of Directors, includes guidelines relative to diversification and maturities designed to preserve principal and liquidity.

The fair value of marketable securities is determined based on quoted market prices at the balance sheet date of the same or similar instruments. The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts through to the earlier of sale or maturity. Such amortization and accretion amounts are included in interest and other income, net in the consolidated statements of comprehensive loss. The cost of marketable securities sold is determined by the specific identification method.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash, cash equivalents, investments in marketable securities, and accounts receivable. The Company deposits its cash in financial institutions. At times, such deposits may be in excess of insured limits.

The Company’s investment policy, approved by the Company’s Board of Directors, includes guidelines relative to diversification and maturities designed to preserve principal and liquidity.

As of December 31, 2024, accounts receivable from ANI Pharmaceuticals, Inc. (ANI), formerly Alimera Sciences, Inc., accounted for 72.3% and accounts receivable from OncoSil Medical Ltd. accounted for 16.5% of total accounts receivable, respectively. For the year ended December 31, 2024, revenues from ANI accounted for 93.6% of total revenues.

As of December 31, 2023, accounts receivable from ANI and Ocumension Therapeutics accounted for 67.8% and 15.7% of total accounts receivable, respectively. For the year ended December 31, 2023, revenues from ANI and Besse Medical accounted for 73.2% and 17.2% of total revenues, respectively.

Fair Value Measurements

The Company accounts for certain assets and liabilities at fair value. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Company categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are:

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Level 1 – Inputs are quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets and liabilities.

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Level 2 – Inputs are directly or indirectly observable in the marketplace, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities with insufficient volume or infrequent transaction (less active markets).

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Level 3 – Inputs are unobservable estimates that are supported by little or no market activity and require the Company to develop its own assumptions about how market participants would price the assets or liabilities.

The Company’s cash equivalents and marketable securities are classified within Level 1 or Level 2 on the basis of valuations using quoted market prices or alternative pricing sources and models utilizing market observable inputs, respectively. The marketable securities have been valued on the basis of valuations provided by third-party pricing services, as derived from such services’ pricing models. Inputs to the models may include, but are not limited to, reported trades, executable bid and ask prices, broker/dealer quotations, prices or yields of securities with similar characteristics, benchmark curves or information pertaining to the issuer, as well as industry and economic events. The pricing services may use a matrix approach, which considers information regarding securities with similar characteristics to determine the valuation for a security, and have been classified as Level 2.

The carrying amounts of accounts receivable, accounts payable and accrued expenses approximate fair value because of their short-term maturity.

Accounts and Other Receivables, Net

Receivables arise primarily from the Company’s products sold in the U.S. The balance in accounts and other receivables, net consists primarily of amounts due from customers, net of applicable revenue reserves. The majority of the Company’s accounts receivable have standard payment terms that require payment within 30-60 days. The Company performs ongoing credit evaluations of its customers’ financial condition and continuously monitor collections and payments from its customers and analyzes accounts that are past due for collectability. The allowance for credit losses is estimated based on the Company’s analysis of trends in overall receivables aging, specific identification of certain receivables that are at risk of not being paid, past collection experience and current economic trends. Given the nature and limited history of collectability of the Company’s accounts receivable, the Company recorded no allowance for credit losses as of December 31, 2024 and 2023.

Inventory

Inventory is stated at the lower of cost or net realizable value, net on a first-in, first-out (FIFO) basis.

Capitalization of inventory costs begins after FDA approval of a product. Prior thereto, inventory costs of products and product candidates are recorded as research and development expense, even if this inventory may later be sold as commercial product.

The Company assesses the recoverability of inventory and writes down any excess and obsolete inventories to their estimated realizable value in the period in which the impairment is first identified. Write-downs are based on the age of the inventory, lower of cost or market, along with significant management judgments concerning future demands for the inventory. Such impairment charges, should they occur, are recorded within cost of sales. The determination of whether inventory costs will be realizable requires estimates by management. If actual market conditions are less favorable than management's projections, additional write-downs of inventory might be recorded in future periods.

Cost of sales consists of costs associated with the manufacture of YUTIQ® and DEXYCU®, certain period costs for DEXYCU® product revenue, product shipping, and, as applicable, royalty expense. The inventory costs for YUTIQ® include purchases of various components, the active pharmaceutical ingredient (API) and direct labor and overhead for the product manufactured in the Company’s Watertown, Massachusetts facility. The inventory costs for DEXYCU® include purchased components, the API and third-party manufacturing and assembly. On November 1, 2022, the CMS published in the Federal Register the Calendar Year (CY) 2023 Medicare Hospital Outpatient Prospective Payment System and ASC Payment System Final Rule (Final Rule). The Final Rule terminated the pass-through related separate payment for DEXYCU, which was no longer separately reimbursed by Medicare as of January 1, 2023, when furnished in hospital outpatient departments and ASC settings. In connection with the change in CMS reimbursement rules on November 1, 2022, the Company recorded impairment charge of $0 and $0.5 million for the years ended December 31, 2024 and 2023, respectively, associated with the write-off of excess DEXYCU® units.

Debt and Equity Instruments

Debt and equity instruments are classified as either liabilities or equity in accordance with the substance of the contractual arrangement.

Property and Equipment

Property and equipment are recorded at cost and depreciated over their estimated useful lives (generally three to five years) using the straight-line method. Leasehold improvements are amortized on a straight-line basis over the shorter of the remaining non-cancellable lease term or their estimated useful lives. Repair and maintenance costs are expensed as incurred. When assets are retired or sold, the assets and accumulated depreciation are derecognized from the respective accounts and any gain or loss is recognized.

Leases

The Company is a party to two operating leases, the Company's headquarters in Watertown, Massachusetts, in which it leases office, laboratory, and manufacturing operations facilities and the Company's new standalone manufacturing facility, including office and lab space located at 600 Commerce Drive, Northbridge, Massachusetts (see Note 8).

The Company determines whether an arrangement is or contains a lease at inception. Leases are recognized on the consolidated balance sheets as ROU assets, current lease liabilities and noncurrent lease liabilities. ROU assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Lease liabilities and their corresponding ROU assets are recorded based on the present value of lease payments over the expected remaining lease term. For this purpose, the Company considers only payments that are fixed and in-substance fixed at lease commencement. ROU assets may also be adjusted for items such as prepayments and lease incentives. The interest rate implicit in a lease contract is typically not readily determinable. As a result, the Company utilizes its incremental borrowing rate, which is the rate incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, amortization expense and interest expense are recognized over the lease term.

Revenue Recognition

Revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, Revenue from Contracts with Customers (ASC 606), the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within the contract, determines those that are performance obligations and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. Sales, value-add and other taxes collected on behalf of third parties are excluded from revenue.

Product sales, net — Effective January 2023, commercial sales of DEXYCU® were no longer supported by the Company, remaining available only through specialty distributors. Effective May 2023, YUTIQ® has been and continues to be sold under commercial supply agreements with Alimera Sciences, Inc. (Alimera) and Ocumension Therapeutics (Ocumension). On September 16, 2024, ANI announced the completion of the acquisition of Alimera. The acquisition does not impact the terms of the commercial supply agreements (see Note 3). The current supply agreement between the Company and ANI for the supply of YUTIQ® will not renew and, effective June 1, 2025, the Company will no longer be responsible for manufacturing of YUTIQ® for the U.S. market.

Reserves for variable consideration — Product sales were recorded at the wholesale acquisition costs, net of applicable reserves for variable consideration. Components of variable consideration included trade discounts and allowances, provider chargebacks and discounts, payor rebates, product returns, and other allowances that were offered within contracts between the Company and its Distributors, payors and other contracted purchasers relating to the Company’s product sales. These reserves were based on the amounts earned, or to be claimed on the related sales, and were classified either as reductions of product revenue and accounts receivable or a current liability, depending on how the amount was to be settled. Overall, these reserves reflected the Company’s best estimates of the amount of consideration to which it was entitled based on the terms of the respective underlying contracts. The actual amounts of consideration ultimately received may differ from the Company’s estimates. If actual results in the future vary from the estimates, the Company adjusts product revenue and earnings in the period such variances become known.

Distribution fees — The Company compensated its Distributors for services explicitly stated in the Company’s contracts and were recorded as a reduction of revenue in the period the related product sale was recognized.

Provider chargebacks and discounts — Chargebacks were discounts that represented the estimated obligations resulting from contractual commitments to sell products at prices lower than the list prices charged to the Company’s Distributors. These Distributors charged the Company for the difference between what they paid for the product and the Company’s contracted selling price. These reserves were established in the same period that the related revenue was recognized, resulting in a reduction of product revenue and the establishment of a current liability which was included in accrued expenses and other current liabilities on the consolidated balance sheets. Reserves for chargebacks consisted of amounts that the Company expected to pay for units that remained in the

distribution channel inventories at each reporting period-end that the Company expected to be sold under a contracted selling price, and chargebacks that Distributors had claimed, but for which the Company had not yet settled.

Government rebates— The Company was subject to discount obligations under state Medicaid programs and Medicare. These reserves were recorded in the same period the related revenue was recognized, resulting in a reduction of product revenue and the establishment of a current liability which was included in accrued expenses and other current liabilities on the consolidated balance sheets. The Company’s liability for these rebates consisted of invoices received for claims from prior quarters that had not been paid or for which an invoice had not yet been received, estimates of claims for the current quarter, and estimated future claims that would be made for product that had been recognized as revenue, but which remained in the distribution channel inventories at the end of each reporting period.

Payor rebates — The Company contracted with certain private payor organizations, primarily insurance companies, for the payment of rebates with respect to utilization of its products. The Company estimated these rebates and recorded such estimates in the same period the related revenue was recognized, resulting in a reduction of product revenue and the establishment of a current liability.

Co-Payment assistance — The Company offered co-payment assistance to commercially insured patients meeting certain eligibility requirements. The calculation of the accrual for co-pay assistance was based on an estimate of claims and the cost per claim that the Company expected to receive associated with product that had been recognized as revenue.

Product returns — The Company generally offered a limited right of return based on its returned goods policy, which included damaged product and remaining shelf life. The Company estimated the amount of its product sales that may be returned and recorded this estimate as a reduction of revenue in the period the related product revenue was recognized, as well as reductions to trade receivables, net on the consolidated balance sheets.

License and collaboration agreement revenue — The Company analyzes each element of its license and collaboration arrangements to determine the appropriate revenue recognition. The terms of the license agreement may include payment to the Company of non-refundable upfront license fees, milestone payments if specified objectives are achieved, and/or royalties on product sales. The Company recognizes revenue from upfront payments at a point in time, typically upon fulfilling the delivery of the associated intellectual property to the customer. For licenses that are combined with other promises, the Company determines whether the combined performance obligation is satisfied over time or at a point in time, when (or as) the associated performance obligation in the contract is satisfied.

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products or services underlying each performance obligation. The Company determines standalone selling prices based on the price at which the performance obligation is sold separately. If the standalone selling price is not observable through past transactions, the Company estimates the standalone selling price taking into account available information such as market conditions and internally approved pricing guidelines related to the performance obligations.

The Company recognizes sales-based milestone payments as revenue upon the achievement of the cumulative sales amount specified in the contract in accordance with ASC 606-10-55-65. For those milestone payments which are contingent on the occurrence of particular future events, the Company determines that these need to be considered for inclusion in the calculation of total consideration from the contract as a component of variable consideration using the most-likely amount method. As such, the Company assesses each milestone to determine the probability and substance behind achieving each milestone. Given the inherent uncertainty associated with these future events, the Company will not recognize revenue from such milestones until there is a high probability of occurrence, which typically occurs near or upon achievement of the event.

When determining the transaction price of a contract, an adjustment is made if payment from a customer occurs either significantly before or significantly after performance, resulting in a significant financing component. Applying the practical expedient in paragraph 606-10-32-18, the Company does not assess whether a significant financing component exists if the period between when the Company performs its obligations under the contract and when the customer pays is one year or less. None of the Company’s contracts contained a significant financing component as of December 31, 2024 and 2023, respectively, nor during the respective years then ended.

Royalties — The Company recognizes revenue from license arrangements with its commercial partners’ net sales of products. Such revenues are included as royalty income. In accordance with ASC 606-10-55-65, royalties are recognized when the subsequent sale of the commercial partner’s products occurs. The Company’s commercial partners are obligated to report their net product sales and the resulting royalty due to the Company typically within 60-days from the end of each quarter. Based on historical product sales,

royalty receipts, and other relevant information, the Company recognizes royalty income each quarter and subsequently determines a true-up when it receives royalty reports and payment from its commercial partners. Historically, these true-up adjustments have been immaterial.

Sale of Future Royalties — The Company has sold its rights to receive certain royalties on product sales. In the circumstance where the Company has sold its rights to future royalties under a royalty purchase agreement (RPA) and also maintains limited continuing involvement in the arrangement (but not significant continuing involvement in the generation of the cash flows that are due to the purchaser), the Company defers recognition of the proceeds it receives for the sale of royalty streams and recognizes such unearned revenue as revenue under the units-of-revenue method over the life of the underlying license agreement. Under the units-of-revenue method, amortization for a reporting period is calculated by computing a ratio of the proceeds received from the purchaser to the total payments expected to be made to the purchaser over the term of the agreement, and then applying that ratio to the period’s cash payment.

Estimating the total payments expected to be received by the purchaser over the term of such arrangements requires management to use subjective estimates and assumptions. Changes to the Company’s estimate of the payments expected to be made to the purchaser over the term of such arrangements could have a material effect on the amount of revenues recognized in any particular period.

Research Collaborations — The Company recognizes revenue over the term of the statements of work under any funded research collaborations. Revenue recognition for consideration, if any, related to a license option right is assessed based on the terms of any such future license agreement or is otherwise recognized at the completion of the research collaborations.

Please refer to Note 3 for further details on the license and collaboration agreements into which the Company has entered and corresponding amounts of revenue recognized during the current and prior year periods.

Cost of sales — Cost of sales consist of costs associated with the manufacture of YUTIQ® and DEXYCU®, certain period costs for DEXYCU® product revenue, product shipping, and as applicable, royalty expense.

For the years ended December 31, 2024 and 2023, DEXYCU® product revenue-based royalty expense as a component of cost of sales was immaterial.

Deferred Revenue

Amounts received prior to satisfying the above revenue recognition criteria are recorded as deferred revenue on the accompanying consolidated balance sheets. Amounts not expected to be recognized within one year following the balance sheet date are classified as non-current deferred revenue.

Research and Development

Research and development costs are charged to operations as incurred. These costs include all direct costs, including cash and stock-based compensation and benefits for research, clinical development, quality assurance, quality control, operations and medical affairs personnel, third-party costs and services for clinical trials, clinical materials, pre-clinical programs, regulatory and medical affairs, external consultants, and other operational costs related to the Company’s research and development of its product candidates.

The Company records accruals for estimated ongoing research and development costs, including costs with respect to outsourced agreements for clinical trials with contract research organizations (CROs). When recording these prepaid and accrued expenses, the Company analyzes progress of the studies, including the phase or completion of events, invoices received, payments made, contracted costs, communications with third-party vendors, and internal tracking of the work performed to date. Judgments and estimates are made in determining the prepaid and accrued balances at the end of any reporting period. Payments made in advance of services provided are recorded as prepaid research and development costs and recognized as expense in the period the expense is incurred. In determining the prepaid and accrued balances, management makes its assessments of the services performed based on various factors, including reporting from third-party CROs and internal tracking of work performed during the period, which are subject to management’s judgment. Actual results could differ from the Company’s estimates.

Stock-Based Compensation

Compensation cost related to share-based payment awards is based on the fair value of the instrument on the grant date and is recognized on a graded vesting basis over the requisite service period for each separately vesting tranche of the awards.

The Company may also grant share-based payment awards that are subject to objectively measurable performance and service criteria. Compensation expense for performance-based awards begins at such time as it becomes probable that the respective performance conditions will be achieved. The Company continues to recognize the grant date fair value of performance-based awards through the vesting date of the respective awards so long as it remains probable that the related performance conditions will be satisfied.

The Company estimates the fair value of stock option awards using the Black-Scholes option valuation model and the fair value of performance stock units, restricted stock units, and deferred stock units based on the observed grant date fair value of the underlying common stock.

Net Loss per Share

Basic net loss per share is computed by dividing the net loss by the weighted average number of common shares outstanding during the period. For periods in which the Company reports net income, diluted net income per share is determined by adding to the basic weighted average number of common shares outstanding the total number of dilutive common equivalent shares using the treasury stock method, unless the effect is anti-dilutive.

Comprehensive Loss

Comprehensive loss is comprised of net loss, foreign currency translation adjustments and unrealized gains and losses on available-for-sale marketable securities.

Income Tax

The Company accounts for income taxes under the asset and liability method. Deferred income tax assets and liabilities are computed for the expected future impact of differences between the financial reporting and income tax bases of assets and liabilities and for the expected future benefit to be derived from tax credits and loss carry forwards. Such deferred income tax computations are measured based on enacted tax laws and rates applicable to the years in which these temporary differences are expected to be recovered or settled. A valuation allowance is provided against net deferred tax assets if, based on the available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized.

The Company determines whether it is more likely than not that a tax position will be sustained upon examination. If it is not more likely than not that a position will be sustained, none of the benefit attributable to the position is recognized. The tax benefit to be recognized for any tax position that meets the more likely than not recognition threshold is calculated as the largest amount that is more than 50% likely of being realized upon resolution of the uncertainty. The Company accounts for interest and penalties related to uncertain tax positions as part of its income tax provision.

Recently Adopted and Recently Issued Accounting Pronouncements

New accounting pronouncements are issued periodically by the Financial Accounting Standards Board (FASB) and are adopted by the Company as of the specified effective dates. Unless otherwise disclosed below, the Company believes that recently issued and adopted pronouncements will not have a material impact on the Company’s financial position, results of operations and cash flows or do not apply to the Company’s operations.

Recently Adopted Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07—Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU was issued to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The Company adopted ASU 2023-07 on January 1, 2024.

Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09—Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU was issued to address investor requests for more transparency about income tax information through improvements to income tax disclosure primarily related to the rate reconciliation and income taxes paid information, and to improve the effectiveness of income tax disclosures. This ASU is effective for public entities for annual periods beginning after December 15, 2024. Early adoption is permitted. ASU 2023-09 will be effective for the Company in the first quarter of its fiscal year ending December 31, 2025. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statement disclosures.

In November 2024, the FASB issued ASU 2024-03—Income Statement —Reporting Comprehensive Income —Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in ASU 2024-03 address

investor requests for more detailed expense information and require additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included on the face of the income statement. This guidance is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statement disclosures.