KALA BIO, Inc.

1. NATURE OF BUSINESS AND BASIS OF PRESENTATION

Nature of Business— KALA BIO, Inc. (the “Company”) was incorporated on July 7, 2009, and is a clinical-stage biopharmaceutical company dedicated to the research, development and commercialization of innovative therapies for rare and severe diseases of the front and back of the eye.

On November 15, 2021, the Company acquired Combangio, Inc. (“Combangio”), including its mesenchymal stem cell secretomes (“MSC-S”) platform and lead product candidate for the treatment of persistent corneal epithelial defects (“PCED”), which the Company refers to as KPI-012 (collectively, the “Combangio Acquisition”). For accounting purposes, the transaction was accounted for as an asset acquisition*,* as substantially all of the fair value of the gross assets acquired was concentrated in a single asset, KPI-012. PCED is a rare disease of impaired corneal healing. In February 2023, the Company dosed its first patient in the CHASE (“CornealHealingAfterSEcretome therapy”) Phase 2b clinical trial of KPI-012 for PCED in the United States. KPI-012 has received both Orphan Drug and Fast Track designations from the FDA for the treatment of PCED. The Company expects to commercialize in the United States any of its product candidates that receive marketing approval.

The Company previously developed and commercializedtwo marketed products, EYSUVIS® (loteprednol etabonate ophthalmic suspension) 0.25%, for the short-term (up to two weeks) treatment of the signs and symptoms of dry eye disease, and INVELTYS® (loteprednol etabonate ophthalmic suspension) 1%, a topical twice-a-day ocular steroid for the treatment of post-operative inflammation and pain following ocular surgery. Both products applied a proprietary mucus-penetrating particle drug delivery technology, which the Company referred to as the AMPPLIFY® Drug Delivery Technology. On July 8, 2022, the Company closed the transaction (the “Alcon Transaction”), contemplated by the asset purchase agreement, dated as of May 21, 2022 (the “Asset Purchase Agreement”), by and between the Company, Alcon Pharmaceuticals Ltd. and Alcon Vision, LLC (together referred to as “Alcon”), pursuant to which Alcon purchased the rights to manufacture, sell, distribute, market and commercialize EYSUVIS and INVELTYS and to develop, manufacture, market and otherwise exploit the Company’s AMPPLIFY Drug Delivery Technology (collectively, the “Commercial Business”). Alcon also assumed certain liabilities with respect to the Commercial Business at the closing of the Alcon Transaction. Alcon paid to the Company an upfront cash payment of $60,000 upon the closing of the Alcon Transaction. In addition, pursuant to the Asset Purchase Agreement, the Company is eligible to receive from Alcon up tofour commercial-based sales milestone payments as follows: (1) $25,000 upon the achievement of $50,000 or more in aggregate worldwide net sales of EYSUVIS and INVELTYS in a calendar year from 2023 to 2028, (2) $65,000 upon the achievement of $100,000 or more in aggregate worldwide net sales of EYSUVIS and INVELTYS in a calendar year from 2023 to 2028, (3) $75,000 upon the achievement of $175,000 or more in aggregate worldwide net sales of EYSUVIS and INVELTYS in a calendar year from 2023 to 2029 and (4) $160,000 upon the achievement of $250,000 or more in aggregate worldwide net sales of EYSUVIS and INVELTYS in a calendar year from 2023 to 2029. Each milestone payment will only become payable once, if at all, upon the first time such milestone is achieved, and onlyone milestone payment will be paid with respect to a calendar year. In the event that more thanone milestone is achieved in a calendar year, the higher milestone payment will become payable and the lower milestone payment will become payable only if the corresponding milestone is achieved again in a subsequent calendar year. The Company has not been entitled to any milestone payment to date.

The Company’s success is dependent upon its ability to develop, obtain regulatory approval for and commercialize KPI-012 and any other product candidate it may develop in the future, the success of its research and development efforts, whether it receives any commercial-based sales milestone payments from Alcon, its ability to raise additional capital when needed and, ultimately, attain profitable operations.

Liquidity and Ability to Continue as a Going Concern— Since inception, the Company has incurred significant losses from operations and negative cash flows from operations including a net loss of$11,155 and$20,102 for the three and six months ended June 30, 2025, respectively, a net loss of$9,579 and$21,386 for the three and six months ended June 30, 2024, respectively, and cash used in operating activities of$16,558 and$20,059 in the six months ended June 30, 2025 and 2024, respectively. As of June 30, 2025, the Company had an accumulated deficit of $688,022. The Company generated only limited revenues from product sales of EYSUVIS and INVELTYS prior to the sale of the Commercial Business to Alcon in July 2022. The Company has financed its operations to date primarily through proceeds from the sale of the Commercial Business to Alcon, its initial public offering of common stock,

follow-on public offerings of common stock and sales of its common stock under its at-the-market offering facility, private placements of common stock and preferred stock (including the Company’s most recent private placement in December 2024), borrowings under credit facilities and the Loan and Security Agreement with Oxford Finance LLC (the “Loan Agreement”), disbursements under a grant from California Institute for Regenerative Medicine (“CIRM”) (including the Company’s most recent disbursement of $2,260 in April 2025 from CIRM upon achievement of a specified milestone), convertible promissory notes and warrants. See Note 4, “Grant Income” for further information about the CIRM Award.

The Company has devoted substantially all of its financial resources and efforts to research and development, including preclinical studies and clinical trials, and, prior to the sale of the Commercial Business to Alcon in July 2022, engaging in activities to launch and commercialize EYSUVIS and INVELTYS. The Company is devoting substantial financial resources to the research and development and potential commercialization of KPI-012 for PCED and any other indications the Company determines to pursue, including Limbal Stem Cell Deficiency. The Company has no revenue-generating commercial products and, as a result of the Combangio Acquisition, may be required to pay certain milestones and royalty payments to former equityholders of Combangio. Although the Company is eligible to receive up to$325,000 in payments from Alcon based upon the achievement of specified commercial sales-based milestones with respect to EYSUVIS and INVELTYS, there can be no assurance when the Company may receive such milestone payments or of the amount of milestone payments the Company may receive, if any. Additionally, the Company cannot be certain that it will achieve the remaining milestones under the CIRM Award within the required timeframes, or at all, and as such the Company may never receive the remaining$1,080 under the award. The Company expects to continue to incur significant expenses and operating losses for the foreseeable future, including in connection with its continued development, regulatory approval efforts and commercialization, if any, of KPI-012. The Company may never achieve or maintain profitability. Net losses may fluctuate significantly from quarter-to-quarter and year-to-year.

The Company expects that its cash and cash equivalents as of June 30, 2025, will be sufficient to fund its operating expenses, lease and debt service obligations and capital expenditure requirements into the first quarter of 2026. The Company also expects to generate negative operating cash flows in the future and will need additional funding to support its planned operations. As a result, the Company has concluded that there is a substantial doubt about its ability to continue as a going concern within twelve months after the date these condensed consolidated financial statements are issued. Management has developed plans to fund the Company’s operations, which primarily consist of raising additional capital through one or more of the following: additional equity or debt financings; additional collaborations partnerships or licensing transactions; or other sources. However, there can be no assurance that the Company will be able to complete any such transaction on acceptable terms or otherwise, and the Company may be unable to obtain sufficient additional capital. If the Company is not able to secure sufficient additional capital in the near term, the Company will need to implement additional cost reduction strategies, which could include delaying, limiting, further reducing or eliminating both internal and external costs related to its operations and research and development programs. As a result, the Company has concluded that management’s plans do not alleviate substantial doubt about the Company’s ability to continue as a going concern for the twelve months after the date these condensed consolidated financial statements are issued.

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business. The financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of the uncertainties described above.

Use of Estimates— The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expense, and related disclosures. The Company bases estimates and assumptions on historical experience when available and on various factors that it believes to be reasonable under the circumstances. The Company evaluates its estimates and assumptions on an ongoing basis. Estimates and assumptions relied upon in preparing these condensed consolidated financial statements relate to, but are not limited to, the present value of lease liabilities and the corresponding right-of-use assets, the fair value of warrants, stock-based compensation, accrued expenses, contingent consideration, grant income and deferred grant income, the valuation of embedded derivatives and the recoverability of the Company’s net deferred tax

assets and related valuation allowance. Actual results may differ from these estimates under different assumptions or conditions.

Net Loss per Share Attributable to Common Stockholders—The Company follows the two-class method when computing net loss per share as the Company has issued shares that meet the definition of participating securities. The two-class method determines net loss per share for each class of common and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income available to common stockholders for the period to be allocated between common and participating securities based upon their respective rights to receive dividends as if all income for the period had been distributed. The two-class method is not applicable during periods with a net loss, as the holders of the convertible preferred stock have no contractual obligation to share in losses. For all periods presented, the two-class method was not applicable.

Basic net loss per share attributable to common stockholders is computed using the weighted-average number of common shares outstanding during the period. Diluted net loss per share attributable to common stockholders is computed using the weighted average number of common shares outstanding during the period and, if dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options and warrants, the issuance of unvested restricted stock units (“RSUs”) and performance-based restricted stock units (“PSUs”) and convertible preferred stock using the if-converted method.

The weighted average number of common shares included in the computation of diluted net loss gives effect to all potentially dilutive common equivalent shares, including outstanding stock options, warrants, unvested RSUs and PSUsand convertible preferred stock using the if-converted method. Common stock equivalent shares are excluded from the computation of diluted net loss per share attributable to common stockholders if their effect is antidilutive. In periods in which the Company reports a net loss attributable to common stockholders, diluted net loss per share attributable to common stockholders is the same as basic net loss per share attributable to common stockholders since dilutive common shares are not assumed to have been issued if their effect is anti-dilutive. The Company reported a net loss attributable to common stockholders for the three and six months ended June 30, 2025 and 2024. (See Note 12, “Loss Per Share”).

Unaudited Interim Financial Information—The condensed consolidated financial statements of the Company included herein have been prepared, without audit, pursuant to the rules and regulations of the Securities Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from this report, as is permitted by such rules and regulations. The accompanying condensed consolidated financial statements reflect all adjustments consisting of normal, recurring adjustments, that are necessary for a fair presentation of the financial position, results of operations, statement of stockholders’ equity and cash flows for the interim periods presented. Interim results are not necessarily indicative of results for a full year. Accordingly, these condensed consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 (the “Annual Report”).

The unaudited condensed consolidated financial statements include the accounts of KALA BIO, Inc. and its wholly owned subsidiaries, Kala Pharmaceuticals Security Corporation and Combangio, Inc. All intercompany transactions and balances have been eliminated in consolidation.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Recently Issued Accounting Pronouncements

In November 2024, the FASB issued ASU No. 2024-03,Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disaggregated expense information in the notes to the financial statements related to purchases of inventory, employee compensation, depreciation, intangible asset amortization and selling expenses for each statement of earnings line item that contains those expenses. ASU No. 2024-03 is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027. The guidance is to be applied on a prospective basis with the option to apply the standard retrospectively and early

adoption is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s condensed consolidated financial statements and related disclosures.

The Company’s significant accounting policies are described in Note 2, “Summary of Significant Accounting Policies,” to the consolidated financial statements included in the Annual Report. There have been no material changes to the significant accounting policies during the three months ended June 30, 2025.

3. FAIR VALUE OF FINANCIAL INSTRUMENTS

ASC 820,Fair Value Measurements and Disclosures, establishes a fair value hierarchy for those instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and its own assumptions (unobservable inputs). The hierarchy consists of three levels:

The Company’s financial instruments as of June 30, 2025 and December 31, 2024 consisted primarily of cash equivalents and contingent consideration. Cash equivalents and contingent consideration are reported at their respective fair values on the Company’s condensed consolidated balance sheets.

The Company acquired Combangio in November 2021 and in connection with the closing of the Combangio Acquisition, the Company agreed to issuean aggregate of 155,664 shares (the “Deferred Purchase Consideration”) of the Company’s common stock to former Combangio stockholders and other equityholders (the “Combangio Equityholders”) consisting of (i) an aggregate of 136,314 shares of common stock issued on January 3, 2022 and (ii) an aggregate of 19,350 shares of common stock that were held back as partial security for the satisfaction of indemnification obligations and other payment obligations of the Combangio Equityholders and were issued on March 10, 2023 (the “Holdback Shares”). The Company established liabilities for these considerations.

Additionally, the purchase price in connection with the Combangio Acquisition included potential future payments of up to $105,000 that are contingent upon the achievement of specified development, regulatory and commercialization milestones and are required to be recorded at fair value. As of June 30, 2025, of the $105,000 in contingent milestone payments, the Company has paid to the Combangio Equityholders an aggregate of $2,646 in cash and $2,354 in shares of the Company’s common stock (representing an aggregate of 105,038 shares of the Company’s common stock) following dosing of the first patient in the Company’s CHASE Phase 2b clinical trial of KPI-012 for PCED in the United States in February 2023 (the “First Dosing Milestone”). Contingent consideration liabilities related to acquisitions are measured at fair value each reporting period using Level 3 unobservable inputs. The fair values of the contingent consideration liabilities were based on a probability-adjusted discounted cash flow calculation using Level 3 fair value measurements. Changes in these estimates and assumptions could have a significant impact on the fair value of the contingent consideration liabilities. Any changes in the fair value of these contingent consideration liabilities are included in loss from operations in the condensed consolidated statements of operations and comprehensive loss. During the three months ended June 30, 2025, the change in fair value of the contingent consideration liabilities was a loss of $153 as compared to a gain of $29 during the three months ended June 30, 2024, and during the six months ended June 30, 2025 and 2024, the change in the fair value of the contingent consideration liabilities was a loss of$174 and$129, respectively, primarily due to changes in discount rates, the passage of time and changes in the expected timing and probability of payment, and were recognized as a gain or loss on fair value remeasurement of contingent consideration in the condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2025 and 2024.

The following tables set forth the fair value of the Company’s financial instruments by level within the fair value hierarchy as of June 30, 2025 and December 31, 2024:

The following tables summarize quantitative information and assumptions pertaining to the fair value measurement of the Level 3 inputs as of June 30, 2025 and December 31, 2024:

The following table summarizes the changes in the contingent consideration liabilities measured at fair value using Level 3 inputs for the three and six months ended June 30, 2025 and 2024:

During the three and six months ended June 30, 2025 and the year ended December 31, 2024, there wereno transfers between Level 1, Level 2, and Level 3.

**4.**GRANT INCOME

CIRM Award

On August 2, 2023, Combangio, a wholly owned subsidiary of the Company, entered into an award agreement with CIRM for a $15,000 grant (as amended from time to time, the “CIRM Award”) to support Combangio’s KPI-012 program for the treatment of PCED. The CIRM Award includes funding for the CHASE Phase 2b clinical trial of KPI-012 for PCED, as well as product and process characterization and analytical development for the program. The CIRM Award is subject to a co-funding requirement under which Combangio is obligated to spend a specified minimum amount on the development of KPI-012 to obtain the full award amount. Upon entry into the CIRM Award, Combangio received an initial $5,900 disbursement from CIRM and subsequently received an aggregate of $8,020 in additional disbursements, including the Company’s most recent disbursement of $2,260 in April 2025, upon the achievement of specified milestones. The balance of the award is payable to Combangio upon the achievement of other specified milestones that are primarily related to Combangio’s progress in conducting the CHASE Phase 2b clinical trial. CIRM may permanently cease disbursements if the milestones are not met within four months of the scheduled completion dates or if the delay is not addressed to CIRM’s satisfaction, as determined by CIRM in its sole discretion. Additionally, if CIRM determines, in its sole discretion, that Combangio has not complied with the terms and conditions of the CIRM Award, CIRM may suspend or permanently cease disbursements. Under the terms of the CIRM Award, Combangio is obligated to pay a royalty on net sales of any product, service or approved drug resulting in whole or in part from the CIRM Award in the amount of 0.1% per $1,000 of funds utilized by the Company until the earlier often years from the date of first commercial sale of such product, service or approved drug and such time as nine times the amount of funds awarded by CIRM has been paid in royalties (the “Base Royalty”). In addition, following the satisfaction of the Base Royalty, Combangio is obligated to pay a 1.0% royalty on net sales of any CIRM-funded invention in excess of $500,000 per year until the last to expire patent covering such invention expires.

During the three and six months ended June 30, 2025, the Company recognized $547 and $2,897 of grant income, respectively, and recognized $980 and $2,055 of grant income during the three and six months ended June 30, 2024, respectively, related to the CIRM Award on its condensed consolidated statement of operations. As of June 30, 2025, the Company had no deferred grant income balance. As of December 31, 2024, the Company had deferred grant income of $637 on its condensed consolidated balance sheet.

5. PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets, consists of the following:

6. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

Accrued expenses and other current liabilities consisted of the following:

7. LEASES

Operating leases

Menlo Park, California Office Lease

In April 2023, Combangio entered into a lease agreement with Menlo Prepi I, LLC, pursuant to which Combangio leases approximately 6,135 square feet of office, laboratory and research and development space in Menlo Park, California. The Company entered into a guaranty of lease agreement guarantying the obligations of Combangio under the lease agreement. The initial term of the lease is for 62 months which commenced on the lease commencement date of July 1, 2023, unless earlier terminated pursuant to the terms of the lease. The lease provides Combangio with anoption to extend the lease for an additional five-year term. Combangio was required to make a payment in the amount of $144, as a security deposit pursuant to the lease during the year ended December 31, 2023, which is included in other long-term assets on the condensed consolidated balance sheets as of June 30, 2025 and December 31, 2024. Upon the lease commencement, the Company recorded a right-of-use asset of$2,154 and corresponding$2,133 of lease liability.

As of June 30, 2025, the Company recognized$1,507 of right-of-use asset and a corresponding$1,633 of lease liability (current and non-current) by calculating the present value of lease payments, discounted at 13.1%, the Company’s estimated incremental borrowing rate, over the expected term of the lease. As of June 30, 2025, the remaining lease term on the lease was 3.2 years. Variable lease expense for the lease, includes real estate taxes, common area maintenance, and management fees.

The components of lease expenses and related cash flows were as follows:

The weighted average remaining lease term and weighted average discount rate of operating leases were as follows:

As of June 30, 2025, the Company expects that its future minimum lease payments will become due and payable as follows:

8. DEBT

On May 4, 2021, the Company entered into the Loan Agreement with Oxford Finance, in its capacity as lender (in such capacity, the “Lender”), and in its capacity as collateral agent (in such capacity, the “Agent”), pursuant to which a term loan of up to an aggregate principal amount of $125,000 was available to the Company, consisting of a tranche A term loan that was disbursed on the closing date in the aggregate principal amount of $80,000 and additional tranches that are no longer available to the Company. The Company utilized substantially all of the proceeds from the tranche A term loan to repay a prior credit facility.

Through June 30, 2023, the term loan bore interest at a floating rate equal to the greater of (i) 30-day LIBOR and (ii)0.11%, plus 7.89%. Effective July 1, 2023, the term loan bears interest at a floating rate equal to the greater of (i)8.00% and (ii) the sum of (a) the 1-Month CME Term Secured Overnight Financing Rate, (b)0.10% and (c)7.89%. The Loan Agreement, prior to the Second Loan Amendment and Third Loan Amendment (as defined below), provided for interest-only payments until December 1, 2024 if neither the tranche B term loan nor the tranche C term loan are made, and until June 1, 2025 if either the tranche B term loan or the tranche C term loan is made (the “Amortization Date”). The aggregate outstanding principal balance of the term loans were required to be repaid in monthly installments starting on the Amortization Date based on a repayment schedule equal to (i)18 months if neither the tranche B term loan nor the tranche C term loan is made and (ii)12 months if either the tranche B term loan or the tranche C term loan is made. All unpaid principal and accrued and unpaid interest with respect to each term loan was due and payable in full on May 1, 2026 (the “Maturity Date”).

The Company paid a facility fee of $400 on the closing date of the Loan Agreement and agreed to pay a facility fee of $100 upon closing of the tranche B term loan and a $125 facility fee upon the closing of the tranche C term loan. The Company will be required to make a final payment fee of 7.00% of the original principal amount of any funded term loan payable on the earlier of (i) the prepayment of the term loan in full or (ii) the Maturity Date. At the Company’s option, the Company may elect to make partial repayments of the term loan to the Lender, subject to specified conditions, including the payment of applicable fees and accrued and unpaid interest on the principal amount of the term loan being repaid.

In connection with its entry into the Loan Agreement, the Company granted the Agent a security interest in substantially all of the Company’s personal property owned or later acquired, including intellectual property and the Commercial Business. The Company also agreed to maintain its cash balance in one or more controlled accounts in favor of the Agent, subject to specified exceptions. The Loan Agreement also contains customary representations and warranties and affirmative and negative covenants, as well as customary events of default. Certain of the customary negative covenants limit the ability of the Company and certain of its subsidiaries, among other things, to incur future debt, grant liens, make investments, make acquisitions, distribute dividends, make certain restricted payments and sell

assets, subject in each case to certain exceptions. Certain of the affirmative covenants include, but are not limited to, a failure to pay principal or interest on its due date or any other obligations within three business days of such obligations’ due date, and a delisting from the Nasdaq Stock Market because of failure to comply with the continued listing standards of the listing tier of the Nasdaq Stock Market on which the Company’s common stock is listed.

The Loan Agreement includes features requiring (i) additional interest rate upon an event of default accrued at an additional 5%, and (ii) the Lender’s right to declare all outstanding principal and interest immediately payable upon an event of default. These two features were analyzed and determined to be embedded derivatives to be valued as separate financial instruments. These embedded derivatives were bundled and valued asone compound derivative in accordance with the applicable accounting guidance for derivatives and hedging transactions. The Company determined that, due to the unlikely event of default, the value of the embedded derivatives is not material as of June 30, 2025. The derivative liability will be remeasured at fair value at each reporting date, with changes in fair value being recorded as other income (expense) in the condensed consolidated statements of operations and comprehensive loss.

On May 21, 2022, in connection with its entry into the Asset Purchase Agreement with Alcon, the Company entered into an amendment to the Loan Agreement (the “Second Loan Amendment”). Pursuant to the Second Loan Amendment, the Lender and Agent consented to the entry by the Company into the Asset Purchase Agreement and the sale of the Commercial Business to Alcon and agreed to release its liens on the Commercial Business in consideration for the payment by the Company at the closing of the Alcon Transaction of an aggregate amount of $40,000 (the “Second Amendment Prepayment”) to the Lender and Agent, representing a partial prepayment of principal in the amount of $36,697 of the $80,000 principal amount outstanding under the term loan advanced by the Lender under the Loan Agreement, plus a prepayment fee of $734 and a final payment fee of $2,569. In addition, the Company was required to pay all accrued and unpaid interest on the principal amount of the term loan being repaid.

In addition, under the Second Loan Amendment, the Lender and Agent agreed that, following the closing of the Alcon Transaction and the Second Amendment Prepayment, the Amortization Date would be extended from December 1, 2024 to January 1, 2026, at which time the aggregate principal balance of the term loan then outstanding under the Loan Agreement is required to be repaid infive monthly installments. Pursuant to the Second Loan Amendment, the Company may also make partial prepayments of the term loan to the Lender, subject to specified conditions, including the payment of applicable fees and accrued and unpaid interest on the principal amount of the term loan being repaid.

On July 8, 2022, the Second Amendment Prepayment was paid in connection with the closing of Alcon Transaction, and as such, the Amortization Date was extended to January 1, 2026. The transaction resulted in a loss on extinguishment of debt of $2,583 for the year ended December 31, 2022, consisting of the prepayment premium, a pro-rata portion of the unamortized debt discount and issuance costs and the unaccreted exit fee due upon the Second Amendment Prepayment.

On December 27, 2022, the Company entered into an amendment to the Loan Agreement (the “Third Loan Amendment”). Pursuant to the Third Loan Amendment, the Lender and Agent agreed to amend certain provisions of the Loan Agreement to permit the transfer of the listing of the Company’s common stock from The Nasdaq Global Select Market to The Nasdaq Capital Market. Pursuant to the Third Loan Amendment, the Company agreed (A) to make partial prepayments of the principal amount of the term loan outstanding under the Loan Agreement as follows (the “Third Amendment Prepayments”): (1) a payment of $5,000 on or before June 30, 2023, representing a partial prepayment of principal in the amount of $4,673, plus a final payment fee of $327 and (2) a payment of $5,000 on or before January 31, 2024, representing a partial prepayment of principal in the amount of $4,673, plus a final payment fee of $327 and (B) that the Amortization Date under the Loan Agreement shall be changed from January 1, 2026 to January 1, 2025. The Company paid the Third Amendment Prepayments on January 25, 2023, following which the Company became required to repay the Loan Agreement in monthly installments from January 1, 2025 through May 1, 2026. The principal loan balance under the Loan Agreement following the Third Amendment Prepayments was$33,957.

Pursuant to the Third Loan Amendment, in addition to the Third Amendment Prepayments, if the Company made an additional prepayment under the Loan Agreement equal to $5,000 (inclusive of the final payment fee) on or prior to December 31, 2024 (the “First Extension Prepayment”), the Amortization Date would be automatically changed

to July 1, 2025, and the maturity date of the Loan Agreement would be automatically changed from May 1, 2026 to November 1, 2026. On December 26, 2024, the Company paid the First Extension Prepayment of$5,000 (inclusive of the final payment fee), and as a result, the Amortization Data was changed to July 1, 2025 and the maturity date was changed to November 1, 2026.

If the Company made an additional prepayment under the Loan Agreement equal to $2,500 (inclusive of the final payment fee) on or prior to June 30, 2025 (the “Second Extension Prepayment”), the Amortization Date would be automatically changed to January 1, 2026, and the maturity date of the Loan Agreement would be automatically changed to May 1, 2027. On June 26, 2025, the Company paid the Second Extension Prepayment, and as a result, the Amortization Data was automatically changed to January 1, 2026 and the maturity date was automatically changed to May 1, 2027.

Under the Third Loan Amendment, the Lender and Agent also agreed to waive the prepayment fees for the Third Amendment Prepayments, the First Extension Prepayment, the Second Extension Prepayment and any other prepayments under the Loan Agreement. Pursuant to the Loan Agreement, the Company also will be required to pay all accrued and unpaid interest on the principal amounts of the term loan being repaid at the time of repayment.

On August 1, 2023, the Company entered into an amendment to the Loan Agreement with Combangio and Oxford Finance (the “Fourth Loan Amendment”). Pursuant to the Fourth Loan Amendment, certain provisions of the Loan Agreement were amended in connection with the change of the Company’s name and the cessation of the U.S. Dollar LIBOR rate. On August 2, 2023, the Company entered into an amendment to the Loan Agreement with Combangio and Oxford Finance (the “Fifth Loan Amendment”). Pursuant to the Fifth Loan Amendment, Oxford Finance consented to the Company’s entry into the CIRM Award and certain provisions of the Loan Agreement were amended in connection therewith.

In addition, in connection with the Loan Agreement, the Company paid certain fees to the Lender and other third-party service providers. The fees paid to the Lender were recorded as a debt discount while the fees paid to other third-party service providers were recorded as debt issuance cost. These costs are being amortized using the effective interest method over the term of the Loan Agreement. The amortization of debt discount and debt issuance cost is included in interest expense within the condensed consolidated statements of operations and comprehensive loss. As of June 30, 2025, the effective interest rate was 14.04%, which takes into consideration the non-cash accretion of the exit fee and the amortization of the debt discount and issuance costs.

During the three months ended June 30, 2025 and 2024, the Company recognized interest expense of $1,085 and $1,470, respectively, for the Loan Agreement. This consisted of amortization of debt discount of$48 and$75 for the three months ended June 30, 2025 and 2024, respectively, accretion of the final payment fee of$125 and$240 for the three months ended June 30, 2025 and 2024, respectively, and the contractual coupon interest expense of$912 and$1,155 for the three months ended June 30, 2025 and 2024, respectively. During the six months ended June 30, 2025 and 2024, the Company recognized interest expense of $2,172 and $2,926, respectively, for the Loan Agreement. This consisted of amortization of debt discount of$93 and$147 for the six months ended June 30, 2025 and 2024, respectively, accretion of the final payment fee of$266 and$480 for the six months ended June 30, 2025 and 2024, respectively, and the contractual coupon interest expense of$1,813 and$2,299 for the six months ended June 30, 2025 and 2024, respectively.

The components of the carrying value of the debt as of June 30, 2025 and December 31, 2024 are detailed below:

The annual principal payments due under the Loan Agreement as of June 30, 2025 were as follows:

9. WARRANTS

The following table summarizes the common stock warrants outstanding as of June 30, 2025 and December 31, 2024, each exercisable into the number of shares of common stock set forth below as of the specified dates:

10. EQUITY FINANCINGS

Registered Offerings

On May 7, 2020, the Company filed a shelf registration statement on Form S-3 with the SEC, which was declared effective on May 19, 2020 (the “2020 Shelf Registration”).

On January 19, 2023, the Company entered into an Open Market Sale Agreement with Jefferies (the “Open Market Sale Agreement”), pursuant to which the Company may issue and sell, from time to time, shares of its common stock under an at-the-market equity offering. The Company filed a prospectus supplement relating to the Open Market Sale Agreement under its 2020 Shelf Registration (the “2020 Shelf ATM Prospectus Supplement”), pursuant to which the Company could offer and sell shares of common stock having an aggregate offering price of up to $40,000 under the Open Market Sale Agreement. From January 19, 2023 to May 11, 2023, the Company sold 229,378 shares of its common stock under its at-the-market offering pursuant to the Open Market Sale Agreement under the 2020 Shelf ATM Prospectus Supplement, resulting in net proceeds of $4,899.

On March 3, 2023, the Company filed a shelf registration statement on Form S-3 with the SEC, which was declared effective on May 11, 2023 (the “2023 Shelf Registration”). Under the 2023 Shelf Registration, the Company may offer and sell up to $350,000 of a variety of securities including common stock, preferred stock, warrants, depositary shares, debt securities, subscription rights or units after such time as the shelf registration statement is declared effective by the SEC. In accordance with the terms of the Open Market Sale Agreement, dated January 19, 2023, between the Company and Jefferies (the “Open Market Sale Agreement”), the Company may issue and sell, from

time to time, shares of its common stock in an at-the-market equity offering through Jefferies, as sales agent, under the 2023 Shelf Registration.

From entry into the Open Market Sale Agreement and as of June 30, 2025, the Company sold an aggregate of 784,196 shares of its common stock under the Open Market Sale Agreement under the 2023 Shelf Registration for total net proceeds of$7,036, none of which were sold during the three and six months ended June 30, 2025. During the six months ended June 30, 2024, the Company sold an aggregate of 387,500 shares of its common stock under the Open Market Sale Agreement under the 2023 Shelf Registration for total net proceeds of$2,471, all of which were sold during the three months ended June 30, 2024.

Private Placements

On December 21, 2023, the Company entered into a Securities Purchase Agreement (the “2023 Securities Purchase Agreement”) with certain institutional investors named therein, pursuant to which the Company agreed to issue and sell, in a private placement priced at-the-market under Nasdaq rules, shares of Series F Convertible Non-Redeemable Preferred Stock, par value $0.001 per share, of the Company (the “Series F Preferred Stock”), for aggregate gross proceeds of approximately $2,000 (the “2023 Private Placement”). Pursuant to the 2023 Securities Purchase Agreement, the Company issued and sold to the purchasers at the closing of the 2023 Private Placement,2,928 shares of Series F Preferred Stock, at a price per preferred share equal to $683.00. Costs incurred in connection with the 2023 Private Placement were $35, which were recorded as a reduction to additional paid-in capital.

On March 25, 2024, the Company entered into a Securities Purchase Agreement (the “March 2024 Securities Purchase Agreement”) with certain institutional investors named therein, pursuant to which the Company agreed to issue and sell, in a private placement priced at-the-market under Nasdaq rules, shares of Series G Convertible Non-Redeemable Preferred Stock, par value $0.001 per share, of the Company (the “Series G Preferred Stock”), for aggregate gross proceeds of approximately $8,600 (the “March 2024 Private Placement”). Pursuant to the March 2024 Securities Purchase Agreement, the Company issued and sold to the purchasers at the closing of the March 2024 Private Placement,10,901 shares of Series G Preferred Stock, at a price per preferred share equal to $788.90. Costs incurred in connection with the March 2024 Private Placement were $62, which were recorded as a reduction to additional paid-in capital.

On June 26, 2024, the Company entered into a Securities Purchase Agreement (the “June 2024 Securities Purchase Agreement”) with certain institutional investors named therein, pursuant to which the Company agreed to issue and sell, in a private placement, shares of common stock and shares of Series H Convertible Non-Redeemable Preferred Stock, par value $0.001 per share, of the Company (the “Series H Preferred Stock”), for aggregate gross proceeds of approximately $12,499 (the “June 2024 Private Placement”). Pursuant to the June 2024 Securities Purchase Agreement, the Company issued and sold to the purchasers at the closing of the June 2024 Private Placement,1,197,314 shares of common stock, at a price per common share equal to $5.85, and 9,393 shares of Series H Preferred Stock, at a price per preferred share equal to $585.00. Costs incurred in connection with the June 2024 Private Placement were $218, which were recorded as a reduction to additional paid-in capital.

On December 29, 2024, the Company entered into a Securities Purchase Agreement (the “December 2024 Securities Purchase Agreement”) with certain institutional investors named therein, pursuant to which the Company agreed to issue and sell, in a private placement, shares of common stock and shares of Series I Convertible Non-Redeemable Preferred Stock, par value $0.001 per share, of the Company (the “Series I Preferred Stock”), for aggregate gross proceeds of approximately $10,750 (the “December 2024 Private Placement”). Pursuant to the December 2024 Securities Purchase Agreement, the Company issued and sold to the purchasers at the closing of the December 2024 Private Placement,1,340,603 shares of common stock, at a price per common share equal to $6.44, and 3,286 shares of Series I Preferred Stock, at a price per preferred share equal to $644.00. Costs incurred in connection with the December 2024 Private Placement were $120, which were recorded as a reduction to additional paid-in capital.

11. STOCK‑BASED COMPENSATION

On June 22, 2023, the Company’s stockholders approved the Company’s Amended and Restated 2017 Equity Incentive Plan (the “2017 Plan”), which amended and restated the Company’s 2017 Equity Incentive Plan, as amended (the “2017 Plan”), to (i) increase the number of shares of common stock authorized for issuance thereunder by 1,250,000 shares; (ii) limit the number of incentive stock options that can be granted under the plan to 7,738,761 shares of common stock; (iii) add an annual limit on non-employee director compensation, including cash and the value of equity awards, of$750,000 for incumbent directors and$1,000,000 in a director’s first year of service; and (iv) extend the term of the plan (including the duration of the evergreen) to 10 years from June 22, 2023, the date that stockholders approved the plan. In addition, the 2017 Plan provides for an annual increase to be added on the first day of each fiscal year, beginning with the fiscal year ending December 31, 2024 and continuing for each fiscal year until, and including, the fiscal year ending December 31, 2033, equal to the lower of (i)4% of the sum of (I) the number of outstanding shares of common stock on such date and (II) the number of shares of common stock issuable upon conversion of any outstanding shares of convertible preferred stock of the Company on such date (without giving effect to any restrictions or limitations on conversion) and (ii) an amount determined by the Company’s board of directors.

As of June 30, 2025, there were 184,154 shares of common stock available for grant under the 2017 Plan.

During the six months ended June 30, 2025, the Company granted options for the purchase of 509,525 shares of common stock and 106,725 RSUs. During the six months ended June 30, 2025, employees of the Company purchased an aggregate of 2,302 shares under the Employee Stock Purchase Plan.

The assumptions used in determining fair value of the stock options granted during the six months ended June 30, 2025 are as follows:

During the six months ended June 30, 2025, the weighted average grant-date fair value of options granted was $6.08.

As of June 30, 2025, a total of 383,817 RSUs were outstanding, consisting of 339,333 unvested RSUs and 44,484 vested and deferred shares by directors.

Stock-based compensation expense was classified in the condensed consolidated statements of operations and comprehensive loss as follows for the three and six months ended June 30, 2025 and 2024:

12. LOSS PER SHARE

Basic and diluted net loss per share attributable to common stockholders was calculated as follows for the three and six months ended June 30, 2025 and 2024:

The following potential common stock equivalents were excluded from the calculation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

13. INCOME TAXES

The Company did not record a provision or benefit for income taxes during the three and six months ended June 30, 2025 and 2024. The Company continues to maintain a full valuation allowance for its U.S. federal and state deferred tax assets.

The Company has evaluated the positive and negative evidence bearing upon its ability to realize the deferred tax assets. Management has considered the Company’s history of cumulative net losses incurred since inception and its generation of limited revenue from product sales since inception and has concluded that it is more likely than not that the Company will not realize the benefits of the deferred tax assets. Management reevaluates the positive and negative evidence at each reporting period.

Realization of the future tax benefits is dependent on many factors, including the Company’s ability to generate taxable income within the net operating loss carryforward period. Under the provisions of Section 382 of the Internal Revenue Code of 1986, certain substantial changes in the Company’s ownership, including a sale of the Company, or significant changes in ownership due to sales of equity, may have limited, or may limit in the future, the amount of net operating loss carryforwards, which could be used annually to offset future taxable income. The Company completed an analysis as of December 31, 2022 and determined that an additional ownership change occurred during December 2022 as a result of the issuance of Series E Preferred Stock, further limiting the net operating loss carryforwards and research and development tax credits due to the expiration of those attributes. As a result, the utilization of the Company’s net operating loss carryforwards is subject to an annual limitation of $222. The Company has not completed an analysis as of December 31, 2024 but does not expect any change would further limit the net operating loss carryforwards.

The Company files its corporate income tax returns in the United States and various states. All tax years since the date of incorporation remain open to examination by the major taxing jurisdictions (state and federal) to which the Company is subject, as carryforward attributes generated in years past may still be adjusted upon examination by the Internal Revenue Service (“IRS”) or other authorities if they have or will be used in a future period. The Company is not currently under examination by the IRS or any other jurisdictions for any tax year.

As of June 30, 2025 and December 31, 2024, the Company hadno uncertain tax positions. The Company’s policy is to recognize interest and penalties related to income tax matters as a component of income tax expense, of whichno interest or penalties were recorded for the three and six months ended June 30, 2025 and 2024.

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

14. COMMITMENTS AND CONTINGENCIES

Stanford License Agreement— In October 2019, Combangio entered into a license agreement with The Board of Trustees of The Leland Stanford Junior University (“Stanford”), which was amended in February 2020 and subsequently transferred to the Company by operation of law upon the Combangio Acquisition. Pursuant to the license agreement with Stanford (the “Stanford Agreement”), the Company has a worldwide, exclusive, sublicensable license under certain patent rights (“licensed patents”), directed to methods to promote eye wound healing, to make, have made, use, import, offer to sell and sell products (“licensed products”) that are covered by the licensed patents for use in all fields. Under the Stanford Agreement, the Company is required to pay Stanford annual license maintenance fees in the low-to-mid five figures which are creditable against earned royalties owed to Stanford for the same year, an aggregate of up to $1,075 for the achievement of specified development and regulatory milestones, and an aggregate of up to $1,100 for the achievement of specified sales milestones. Stanford is also entitled to receive tiered royalties in a low single digit percentage range on net sales of licensed products that are covered by a valid claim of a licensed patent. Amounts paid to Stanford in the three and six months ended June 30, 2025 and 2024 werede minimis.

Litigation— The Company is not currently subject to any material legal proceedings.

Contingencies related to the Merger Agreement— In connection with the Combangio Acquisition, the Company agreed to make additional payments based on the achievement of certain milestone events related to KPI-012. The Company recognized certain contingent consideration liabilities at fair value on the acquisition date, and revalues the remaining obligations each reporting period. The total potential maximum payout for the milestone payments, which have been recorded as liabilities at fair value, is $40,000 and the milestone payments are contingent upon the achievement of specified development, regulatory and commercialization milestones. Following the achievement of the First Dosing Milestone in February 2023, the Company paid an aggregate of $2,500 in cash and $2,354 in shares of the Company’s common stock (representing an aggregate of 105,038 shares of the Company’s common stock) to the former Combangio Equityholders in March 2023. The Company paid the remaining amount due in connection with the First Dosing Milestone of $146 in cash in January 2024. Additionally, pursuant to the merger agreement for the Combangio Acquisition, the Company could trigger potential future sales-based milestone payments of up to $65,000 and cash royalty payment obligations in the mid-to-high single digits. Because the achievement of these sales-based milestones related to KPI-012 was not considered probable as of June 30, 2025 or December 31, 2024, such contingencies have not been recorded in the Company’s condensed consolidated financial statements. Amounts related to contingent milestone payments are not considered contractual obligations as they are contingent on the successful achievement of certain development, regulatory or commercial milestones.

15. SEGMENT

Operating segments are identified as components of an enterprise about which separate discrete financial information is made available for evaluation by the chief operating decision maker (“CODM”) in making decisions regarding resource allocation and assessing performance. The CODM is the Company’s interim Chief Executive Officer. The Company manages its operations asone operating andreportable segment for the purposes of assessing performance and making operating decisions. The Company’s singular focus is on the development and commercialization of innovative therapies for rare and severe diseases of the front and back of the eye. All of the Company’s tangible assets are held in the United States.

The CODM uses net loss as reported on the consolidated statements of operations and comprehensive loss to analyze cash flows in assessing performance of the segment and deciding how to allocate resources. The measure of segment assets is reported on the consolidated balance sheet as total assets.

The table below provides information about the Company’s segment, including significant segment expenses, other segment items and a reconciliation to net loss: