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2026-01-01 2026-06-30 0001737287 us-gaap:EmployeeStockOptionMember 2025-01-01 2025-06-30 0001737287 us-gaap:RestrictedStockUnitsRSUMember 2026-01-01 2026-06-30 0001737287 us-gaap:RestrictedStockUnitsRSUMember 2025-01-01 2025-06-30 0001737287 us-gaap:EmployeeStockMember 2026-01-01 2026-06-30 0001737287 us-gaap:EmployeeStockMember 2025-01-01 2025-06-30 0001737287 allo:ReportableSegmentMember 2026-04-01 2026-06-30 0001737287 allo:ReportableSegmentMember 2025-04-01 2025-06-30 0001737287 allo:ReportableSegmentMember 2026-01-01 2026-06-30 0001737287 allo:ReportableSegmentMember 2025-01-01 2025-06-30 0001737287 allo:DeborahMessemerMember 2026-04-01 2026-06-30 0001737287 allo:DeborahMessemerMember 2026-06-30 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ________________________________________________________ FORM 10-Q ________________________________________________________ (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38693 ________________________________________________________ Allogene Therapeutics, Inc. (Exact Name of Registrant as Specified in its Charter) ________________________________________________________ Delaware 82-3562771 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 210 East Grand Avenue , South San Francisco , California 94080 (Address of principal executive offices including zip code) Registrant’s telephone number, including area code: ( 650 ) 457-2700 N/A (Former name, former address and former fiscal year, if changed since last report) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $0.001 par value per share ALLO The Nasdaq Stock Market LLC Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. Large Accelerated Filer ☐ Accelerated filer ☐ Non-accelerated filer ☒ Smaller reporting company ☒ Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒ As of August 10, 2026, the registrant had 345,490,881 shares of common stock, $0.001 par value per share, outstanding. Table of Contents Table of Contents Page no. PART I: FINANCIAL INFORMATION Item 1. Financial Statements - Unaudited 1 Condensed Balance Sheets 1 Condensed Statements of Operations and Comprehensive Loss 2 Condensed Statements of Stockholders’ Equity 3 Condensed Statements of Cash Flows 5 Notes to Condensed Financial Statements 6 Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations 22 Item 3. Quantitative and Qualitative Disclosures About Market Risk 35 Item 4. Controls and Procedures 36 PART II: OTHER INFORMATION Item 1. Legal Proceedings 37 Item 1A. Risk Factors 37 Item 2. Unregistered Sales of Equity Securities and Use of Proceeds 88 Item 3. Defaults Upon Senior Securities 88 Item 4. Mine Safety Disclosures 88 Item 5. Other Information 88 Item 6. Exhibits 88 Signatures 90 i Table of Contents PART I: FINANCIAL INFORMATION Item 1. Financial Statements ALLOGENE THERAPEUTICS, INC. Condensed Balance Sheets (Unaudited) (In thousands, except share and per share amounts) June 30, 2026 December 31, 2025 Assets Current assets: Cash and cash equivalents $ 38,626 $ 51,688 Short-term investments 293,978 198,522 Prepaid expenses and other current assets 7,396 7,539 Total current assets 340,000 257,749 Long-term investments 90,986 8,043 Operating lease right-of-use asset 37,739 39,888 Property and equipment, net 67,382 72,839 Deposit placed in escrow — 23,479 Restricted cash 10,292 10,292 Other long-term assets 3,692 3,615 Total assets $ 550,091 $ 415,905 Liabilities and stockholders’ equity Current liabilities: Accounts payable $ 5,964 $ 4,270 Accrued and other current liabilities 25,763 28,244 Total current liabilities 31,727 32,514 Lease liability, noncurrent 70,353 75,045 Other long-term liabilities 11,836 15,804 Total liabilities 113,916 123,363 Commitments and Contingencies (Notes 6 and 7) Stockholders’ equity: Preferred stock, $ 0.001 par value: 10,000,000 shares authorized as of June 30, 2026 and December 31, 2025; no shares were issued and outstanding as of June 30, 2026 and December 31, 2025 — — Common stock, $ 0.001 par value: 800,000,000 and 400,000,000 shares authorized as of June 30, 2026 and December 31, 2025, respectively; 345,345,427 and 229,413,523 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively 345 229 Additional paid-in capital 2,532,341 2,302,753 Accumulated deficit ( 2,095,993 ) ( 2,010,709 ) Accumulated other comprehensive income (loss) ( 518 ) 269 Total stockholders’ equity 436,175 292,542 Total liabilities and stockholders’ equity $ 550,091 $ 415,905 The accompanying notes are an integral part of these unaudited condensed financial statements. 1 Table of Contents ALLOGENE THERAPEUTICS, INC. Condensed Statements of Operations and Comprehensive Loss (Unaudited) (In thousands, except share and per share amounts) Three Months Ended June 30, Six Months Ended June 30, 2026 2025 2026 2025 Collaboration revenue - related party $ 4,640 $ — $ 4,640 $ — Operating expenses: Research and development 30,721 40,156 62,724 90,356 General and administrative 20,839 14,281 34,928 29,272 Impairment of long-lived assets — 2,382 — 2,382 Total operating expenses 51,560 56,819 97,652 122,010 Loss from operations ( 46,920 ) ( 56,819 ) ( 93,012 ) ( 122,010 ) Other income (expenses), net: Interest and other income, net 4,647 6,187 8,220 11,703 Interest expense ( 343 ) ( 268 ) ( 643 ) ( 418 ) Other income (expenses), net ( 61 ) ( 43 ) 151 49 Total other income (expenses), net 4,243 5,876 7,728 11,334 Net loss ( 42,677 ) ( 50,943 ) ( 85,284 ) ( 110,676 ) Other comprehensive income (loss): Net unrealized gain (loss) on available-for-sale investments ( 335 ) ( 88 ) ( 787 ) 44 Net comprehensive loss $ ( 43,012 ) $ ( 51,031 ) $ ( 86,071 ) $ ( 110,632 ) Net loss per share, basic and diluted $ ( 0.13 ) $ ( 0.23 ) $ ( 0.30 ) $ ( 0.51 ) Weighted-average number of shares used in computing net loss per share, basic and diluted 328,930,269 218,929,548 284,855,386 217,153,948 The accompanying notes are an integral part of these unaudited condensed financial statements. 2 Table of Contents ALLOGENE THERAPEUTICS, INC. Condensed Statements of Stockholders’ Equity (Unaudited) (In thousands, except share amounts) Common Stock Additional Paid-in Capital Accumulated Deficit Accumulated Other Comprehensive Income (Loss) Total Stockholders’ Equity Shares Amount Balance - December 31, 2025 229,413,523 $ 229 $ 2,302,753 $ ( 2,010,709 ) $ 269 $ 292,542 Issuance of common stock upon exercise of stock options and vesting of RSUs 2,476,547 2 2 — — 4 Issuance of common stock from ATM offering, net of commissions and offering costs of $ 0.3 million 12,476,533 13 20,655 — — 20,668 Stock-based compensation — 8,270 — — 8,270 Employee stock purchase plan 449,810 1 449 — — 450 Net loss — — — ( 42,607 ) — ( 42,607 ) Net unrealized loss on available-for-sale investments — — — — ( 452 ) ( 452 ) Balance - March 31, 2026 244,816,413 245 2,332,129 ( 2,053,316 ) ( 183 ) 278,875 Issuance of common stock upon vesting of RSUs 329,014 — — — — — Issuance of common stock from public offering, net of commissions and offering costs of $ 12.5 million 100,200,000 100 187,772 — — 187,872 Stock-based compensation — — 12,440 — — 12,440 Net loss — — — ( 42,677 ) — ( 42,677 ) Net unrealized loss on available-for-sale investments — — — — ( 335 ) ( 335 ) Balance - June 30, 2026 345,345,427 $ 345 $ 2,532,341 $ ( 2,095,993 ) $ ( 518 ) $ 436,175 3 Table of Contents Common Stock Additional Paid-in Capital Accumulated Deficit Accumulated Other Comprehensive Income (Loss) Total Stockholders’ Equity Shares Amount Balance - December 31, 2024 212,210,597 $ 212 $ 2,241,879 $ ( 1,819,823 ) $ ( 89 ) $ 422,179 Issuance of common stock upon vesting of RSUs 2,158,522 2 ( 2 ) — — — Issuance of common stock from ATM offering, net of commissions and offering costs of $ 0.2 million 3,842,282 4 9,998 — — 10,002 Stock-based compensation — — 12,175 — — 12,175 Employee stock purchase plan 386,861 1 637 — — 638 Net loss — — — ( 59,733 ) — ( 59,733 ) Net unrealized gain on available-for-sale investments — — — — 132 132 Balance - March 31, 2025 218,598,262 219 2,264,687 ( 1,879,556 ) 43 385,393 Issuance of common stock upon vesting of RSUs 398,743 — — — — — Issuance of common stock from ATM offering, net of commissions and offering costs of $ 0.02 million 1,136,871 1 1,513 1,514 Stock-based compensation — — 8,685 — — 8,685 Net loss — — — ( 50,943 ) — ( 50,943 ) Net unrealized loss on available-for-sale investments — — — — ( 88 ) ( 88 ) Balance - June 30, 2025 220,133,876 $ 220 $ 2,274,885 $ ( 1,930,499 ) $ ( 45 ) $ 344,561 The accompanying notes are an integral part of these unaudited condensed financial statements. 4 Table of Contents ALLOGENE THERAPEUTICS, INC. Condensed Statements of Cash Flows (Unaudited) (In thousands) Six Months Ended June 30, 2026 2025 Cash flows from operating activities: Net loss $ ( 85,284 ) $ ( 110,676 ) Adjustments to reconcile net loss to net cash used in operating activities: Stock-based compensation 20,710 20,860 Depreciation and amortization 5,514 6,205 Net amortization/accretion on investment securities ( 2,198 ) ( 2,477 ) Impairment of long-lived assets — 2,382 Non-cash rent expense 2,149 2,277 Non-cash collaboration revenue - related party ( 4,640 ) — Changes in operating assets and liabilities: Deposit placed in escrow 23,479 ( 2,711 ) Prepaid expenses and other current assets 143 1,242 Other long-term assets ( 82 ) ( 1,503 ) Accounts payable 1,694 ( 758 ) Accrued and other current liabilities ( 2,821 ) ( 3,488 ) Operating lease liabilities ( 4,245 ) ( 3,759 ) Other long-term liabilities 672 447 Net cash used in operating activities ( 44,909 ) ( 91,959 ) Cash flows from investing activities: Purchases of property and equipment ( 159 ) ( 143 ) Proceeds from maturities of investments 108,427 110,300 Purchase of investments ( 285,415 ) ( 60,146 ) Net cash provided by (used in) investing activities ( 177,147 ) 50,011 Cash flows from financing activities: Proceeds from issuance of common stock from ATM offering, net of commissions and issuance costs 20,668 11,516 Proceeds from issuance of common stock from public offering, net of commissions and issuance costs 187,872 — Proceeds from CIRM award (Note 5) — 6,908 Proceeds from issuance of common stock upon exercise of stock options 4 — Proceeds from issuance of common stock under the employee stock purchase plan 450 638 Net cash provided by financing activities 208,994 19,062 Net change in cash and cash equivalents and restricted cash ( 13,062 ) ( 22,886 ) Cash and cash equivalents and restricted cash — beginning of period 61,980 85,510 Cash and cash equivalents and restricted cash — end of period $ 48,918 $ 62,624 Non-cash operating activities: Property and equipment purchases in accounts payable and accrued liabilities $ — $ 215 Supplemental disclosure: Cash paid for amounts included in the measurement of lease liabilities $ ( 6,528 ) $ ( 6,518 ) The accompanying notes are an integral part of these unaudited condensed financial statements. 5 Table of Contents ALLOGENE THERAPEUTICS, INC. Notes to Condensed Financial Statements 1. Description of Business Allogene Therapeutics, Inc. (the Company or Allogene) was incorporated on November 30, 2017 in the State of Delaware and is headquartered in South San Francisco, California. Allogene is a clinical stage immuno-oncology company pioneering the development of genetically engineered allogeneic T cell product candidates for the treatment of cancer and autoimmune diseases. The Company is developing a pipeline of off-the-shelf T cell product candidates that are designed to target and kill cancer cells in patients or eliminate pathogenic autoreactive cells in patients with autoimmune disorders. The Company’s engineered T cells are allogeneic, meaning they are derived from healthy donors for intended use in any patient, rather than from an individual patient for that patient’s use, as in the case of autologous T cells. The Company believes this key difference will enable it to deliver readily available treatments faster, more reliably, at greater scale, and to more patients. Public Offerings In November 2019, the Company entered into a sales agreement with TD Securities (USA) LLC (f/k/a Cowen and Company, LLC) (TD Cowen), as amended on November 2, 2022 and November 2, 2023, under which the Company may from time to time issue and sell shares of its common stock through TD Cowen in at-the-market (ATM) offerings. The aggregate compensation payable to TD Cowen as the Company’s sales agent equals up to 3.0 % of the gross sales price of the shares sold through TD Cowen pursuant to the sales agreement. Although the sales agreement does not specify an aggregate dollar limit on sales, sales under the agreement may be made only pursuant to an effective registration statement and an applicable prospectus supplement. On June 22, 2026, the Company filed a prospectus supplement under its effective shelf registration statement relating to the offer and sale of shares of its common stock having an aggregate offering price of up to $ 135.0 million pursuant to the sales agreement. During the six months ended June 30, 2026, the Company sold an aggregate of 12,476,533 shares of common stock in ATM offerings resulting in net proceeds of $ 20.7 million. No shares were sold pursuant to the June 2026 prospectus supplement through June 30, 2026. As of June 30, 2026, shares of common stock having an aggregate offering price of up to $ 135.0 million remained available for sale under the June 2026 prospectus supplement, subject to market conditions, the terms and conditions of the sales agreement and applicable law. On April 14, 2026, the Company entered into an underwriting agreement with Goldman Sachs & Co. LLC, Jefferies LLC and TD Securities (USA) LLC, as representatives of the several underwriters named therein (Underwriters), relating to the issuance and sale in a public offering of shares of the Company’s common stock (April 2026 Public Offering). On April 16, 2026, the Company closed the April 2026 Public Offering in which it sold 100,200,000 shares of its common stock at a public offering price of $ 2.00 per share, including 12,700,000 additional shares sold pursuant to the Underwriters’ partial exercise of their option to purchase additional shares. The aggregate gross proceeds were $ 200.4 million and the aggregate net proceeds were approximately $ 187.9 million, after deducting underwriting discounts and commissions and offering expenses payable by the Company. Need for Additional Capital The Company has sustained operating losses and expects to continue to generate operating losses for the foreseeable future. The Company’s ultimate success depends on the outcome of its research and development activities as well as the ability to commercialize the Company’s product candidates. The Company had cash, cash equivalents and investments of $ 423.6 million as of June 30, 2026. Since inception through June 30, 2026, the Company has incurred cumulative net losses of $ 2,096.0 million. Management expects to incur additional losses in the future to fund its operations and conduct product research and development and recognizes the need to raise additional capital to fully implement its business plan. The Company may raise additional capital through the issuance of equity securities, debt financings, collaborations or other sources to further implement its business plan. If additional financing is not available at adequate levels, the Company may need to reevaluate its operating plan and may be required to delay the development of its product candidates. The Company expects that its cash, cash equivalents and investments as of June 30, 2026 will be sufficient to fund its operations for at least the next 12 months from the date the accompanying unaudited condensed financial statements are filed with the SEC. 2. Summary of Significant Accounting Policies 6 Table of Contents Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information and pursuant to Form 10-Q and Article 10 of Regulation S-X of the SEC. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the Company’s opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of the results of operations and cash flows for the periods presented have been included. The condensed balance sheet as of June 30, 2026, the condensed statements of operations and comprehensive loss for the three and six months ended June 30, 2026 and 2025, the condensed statements of stockholders’ equity as of June 30, 2026 and 2025, the condensed statements of cash flows for the six months ended June 30, 2026 and 2025, and the financial data and other financial information disclosed in the notes to the condensed financial statements are unaudited. The results of operations for the three and six months ended June 30, 2026 are not necessarily indicative of the results to be expected for the year ending December 31, 2026, or for any other future annual or interim period. These condensed financial statements should be read in conjunction with the Company’s audited financial statements and related notes for the year ended December 31, 2025, included in the Company’s Annual Report on Form 10-K, filed with the SEC on March 12, 2026 (Annual Report). Use of Estimates The preparation of condensed financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the condensed financial statements and the reported amounts of expenses during the reporting period. Significant estimates and assumptions made in the accompanying condensed financial statements include but are not limited to the fair value of common stock, the fair value of stock options, the fair value of investments, income tax uncertainties, the CIRM (as defined below) award liability, and certain accruals. The Company evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors and adjusts those estimates and assumptions when facts and circumstances change. Actual results could differ from those estimates. Significant Accounting Policies There have been no significant changes to the accounting policies during the three and six months ended June 30, 2026, as compared to the significant accounting policies described in Note 1 of the “Notes to Financial Statements” in the Company’s audited financial statements included in its Annual Report. Recently Adopted Accounting Pronouncements There have been no new accounting pronouncements issued or effective that are expected to have a material impact on the Company’s condensed financial statements. Recent Accounting Pronouncements Not Yet Adopted In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40), which requires new disclosures to disaggregate prescribed natural expenses underlying any income statement caption. ASU 2024-03 is effective for annual periods in fiscal years beginning after December 15, 2026, and interim periods thereafter. Early adoption is permitted. ASU 2024-03 applies on a prospective basis for periods beginning after the effective date. However, retrospective application to any or all prior periods presented is permitted. The Company is currently assessing the impact ASU 2024-03 will have on the financial statements and disclosures. In September 2025, the FASB issued ASU 2025-06, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which modernizes the accounting for internal-use software costs. ASU 2025-06 removes all references to prescriptive and sequential software development stages throughout Subtopic 350-40. Therefore, an entity is required to start capitalizing software costs when both of the following occur: 1) Management has authorized and committed to funding the software project and 2) It is probable that the project will be completed and the software will be used to perform the function intended. ASU 2025-06 is effective for annual periods beginning after December 15, 2027, with early adoption permitted as of the beginning of an annual period. The Company is currently in the process of evaluating the impact of this pronouncement on the financial statements and disclosures. 3. Fair Value Measurements 7 Table of Contents The Company measures and reports its cash equivalents, restricted cash, and investments at fair value. Money market funds are measured at fair value on a recurring basis using quoted prices and are classified as Level 1. Investments are measured at fair value based on inputs other than quoted prices that are derived from observable market data and are classified as Level 2 inputs, except for investments in U.S. treasury securities which are classified as Level 1. There were no Level 3 assets or liabilities as of June 30, 2026 and as of December 31, 2025. Financial assets subject to fair value measurements on a recurring basis and the level of inputs used in such measurements by major security type as of June 30, 2026 and as of December 31, 2025 are presented in the following tables: June 30, 2026 Level 1 Level 2 Level 3 Fair Value (In thousands) Financial Assets: Money market funds (1) $ 34,201 $ — $ — $ 34,201 Commercial paper — 142,502 — 142,502 Corporate bonds — 84,488 — 84,488 U.S. treasury securities 127,105 — — 127,105 U.S. agency securities — 30,869 — 30,869 Total financial assets $ 161,306 $ 257,859 $ — $ 419,165 December 31, 2025 Level 1 Level 2 Level 3 Fair Value (In thousands) Financial Assets: Money market funds (1) $ 48,576 $ — $ — $ 48,576 Commercial paper — 42,704 — 42,704 Corporate bonds — 53,705 — 53,705 U.S. treasury securities 76,157 — — 76,157 U.S. agency securities — 33,999 — 33,999 Total financial assets $ 124,733 $ 130,408 $ — $ 255,141 (1) Included within cash and cash equivalents on the Company’s condensed balance sheets. 4. Financial Instruments The fair value and amortized cost of cash equivalents and available-for-sale securities by major security type as of June 30, 2026 and as of December 31, 2025 are presented in the following tables: 8 Table of Contents June 30, 2026 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (In thousands) Money market funds $ 34,201 $ — $ — $ 34,201 Commercial paper 142,709 9 ( 216 ) 142,502 Corporate bonds 84,598 — ( 110 ) 84,488 U.S. treasury securities 127,252 31 ( 178 ) 127,105 U.S. agency securities 30,923 — ( 54 ) 30,869 Total cash equivalents and investments $ 419,683 $ 40 $ ( 558 ) $ 419,165 Classified as: Cash equivalents $ 34,201 Short-term investments 293,978 Long-term investments 90,986 Total cash equivalents and investments $ 419,165 December 31, 2025 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (In thousands) Money market funds $ 48,576 $ — $ — $ 48,576 Commercial paper 42,696 18 ( 10 ) 42,704 Corporate bonds 53,636 69 — 53,705 U.S. treasury securities 75,990 167 — 76,157 U.S. agency securities 33,974 25 — 33,999 Total cash equivalents and investments $ 254,872 $ 279 $ ( 10 ) $ 255,141 Classified as: Cash equivalents $ 48,576 Short-term investments 198,522 Long-term investments 8,043 Total cash equivalents and investments $ 255,141 As of June 30, 2026, the amortized cost and fair value of cash equivalents and available-for-sale securities with remaining contractual maturities of less than 1 year were $ 328.5 million and $ 328.2 million, respectively, and the amortized cost and fair value of cash equivalents and for available-for-sale securities with remaining contractual maturities with maturities of 1 to 3 years were $ 91.2 million and $ 91.0 million, respectively. There were no significant realized losses on available-for-sale securities for the three and six months ended June 30, 2026 and 2025. As of June 30, 2026, unrealized losses on available-for-sale securities are not attributed to credit risk. The Company believes that it is more likely than not that investments in an unrealized loss position will be held until maturity and all interest and principal will be received. The Company believes that an allowance for credit losses is unnecessary because the unrealized losses on certain of the Company’s available-for-sale securities are due to market factors. As of June 30, 2026 and December 31, 2025, there were no securities in a continuous net unrealized loss position for more than 12 months. To date, the Company has not recorded any impairment charges on available-for-sale securities. The Company has made an accounting policy election not to recognize an allowance for credit losses for accrued interest receivable on available-for-sale securities. As of June 30, 2026 and December 31, 2025, the Company recognized $ 2.2 million and $ 1.5 million, respectively, of accrued interest receivable from available-for-sale securities within prepaid expenses and other current assets on the condensed balance sheets. 9 Table of Contents 5. Balance Sheet Components Property and Equipment, Net Property and Equipment consist of the following: June 30, 2026 December 31, 2025 (In thousands) Leasehold improvements $ 107,537 $ 107,537 Laboratory equipment 28,731 28,748 Computer equipment and purchased software 4,873 4,873 Furniture and fixtures 4,223 4,214 Total 145,364 145,372 Less: accumulated depreciation ( 77,982 ) ( 72,533 ) Total property and equipment, net $ 67,382 $ 72,839 During the year ended December 31, 2024, the Company made a decision to sublease one of its leased buildings in South San Francisco. The Company vacated and ceased occupancy of this building and began actively marketing the leased building for sublease in 2024. The Company determined that the change in how this building is being used was an indicator of impairment. The Company identified this to-be-sublet property as a separate asset group. The Company concluded that the carrying value of this to-be-sublet property asset group was not recoverable and the estimated fair value of this asset group was below its carrying value. The decrease in the fair value of this asset group was mainly due to the lower estimated sublease income based on current commercial rental market conditions compared to the lease payments in accordance with the initial operating lease agreement. The Company performed discounted cash flow analysis to estimate the fair value of its right-of-use asset and leasehold improvements. The key inputs to this valuation were expected sublease rental income of $ 1.9 million through March 2032 and the risk-adjusted annual discount rate of 9.50 %. Based on this analysis, the Company concluded the fair value of the right-of-use asset and leasehold improvements of $ 1.2 million was lower than its net book value of $ 7.5 million. The Company recognized an aggregate long-lived asset impairment charge of $ 6.2 million on the right-of-use asset and leasehold improvements for the year ended December 31, 2024. In June 2025, the Company identified an additional indicator that the carrying value of this to-be-sublet property asset group was not recoverable. The expected sublease rental income of $ 1.9 million as of December 31, 2024 had decreased to $ 0.7 million as of June 30, 2025 based on the sublease agreement executed in July 2025. The risk-adjusted annual discount rate was 9.25 % as of June 30, 2025. The Company updated its discounted cash flow analysis to estimate fair value of its right-of-use asset and leasehold improvements. Based on this analysis, the resulting fair value was immaterial resulting in the write off of the $ 0.9 million right-of-use asset and $ 0.1 million leasehold improvements as long-lived asset impairment charges for the three and six months ended June 30, 2025. There were no such costs for the three and six months ended June 30, 2026. In addition, during the three and six months ended June 30, 2025, the Company recognized a non-cash equipment impairment charge of $ 1.3 million as a result of the Workforce Reduction, see the next section for further information. Accrued and Other Current Liabilities On May 12, 2025, the Company’s Board of Directors approved an approximately 28 % reduction in the Company’s employee workforce (Workforce Reduction) in connection with a reduction in manufacturing operations and a reprioritization of resources to focus on the Company’s clinical programs. The Workforce Reduction included one-time severance payments and other employee benefits and resulted in impairment of equipment. During the three and six months ended June 30, 2025, the Company recorded $ 3.1 million, $ 0.3 million, and $ 1.3 million in research and development expense, general and administrative expense, and equipment impairment, respectively, in the statement of operations and comprehensive loss. There were no such costs for the three and six months ended June 30, 2026. As of June 30, 2026, there were no remaining severance and other employee benefits accruals associated with the Workforce Reduction. California Institute for Regenerative Medicine (CIRM) Award On April 26, 2024, the Company was awarded up to $ 15.0 million from CIRM to support the clinical development of ALLO-316, an AlloCAR T investigational product targeting CD70 in development for the treatment of advanced or metastatic renal cell carcinoma (RCC). Upon treatment of 20 patients, the Company met the primary study objectives of the ALLO-316 Phase 1b study plan supported by CIRM and was able to successfully complete the study plan on time and under budget 10 Table of Contents without further enrollment. As a result, the Company updated the study plan and requested a reduction in its co-funding responsibility and adjustments to the remaining milestone payments to align with the updated research plan. On April 28, 2025, the terms of the award were amended, and the total award amount was adjusted to up to $ 9.2 million. Pursuant to terms of the award, the disbursements are tied to the achievement of specified operational milestones. In addition, the terms of the award and amended award include a co-funding requirement pursuant to which the Company is required to spend up to approximately $ 15.7 million of its own capital to fund the CIRM funded research project. The award was made in accordance with the CIRM Grants Administration Policy for Clinical Stage Projects which may require the award to be repaid by the Company. Under the terms of the CIRM award, the Company is obligated to pay royalties based on a low single digit royalty percentage on net sales of CIRM-funded product candidate. The maximum royalty that the Company may be required to pay to CIRM is equal to nine times the total amount awarded and paid to the Company. After completing the CIRM funded research project and at any time after the award period end date (but no later than the ten-year anniversary of the date of the award), the Company has the right, upon its election, to convert the award into a loan. The terms of conversion into a loan will be determined based on various factors and could result in 80 % to 100 % plus interest at 10 % per annum plus the Secured Overnight Financing Rate of the total award dependent upon the phase of clinical development of the product candidate at the time of the Company’s election to be repaid to CIRM. No income associated with the CIRM award will be recognized until it is confirmed with CIRM that the award does not require repayment. Upon cash receipt, the CIRM award and accrued interest will be recognized as other long-term liabilities on the condensed balance sheets. The Company will not recognize a receivable of future awards until it is approved by CIRM. The Company received $ 9.2 million from CIRM through June 30, 2026 and accounted for the proceeds as a liability within other long-term liabilities on the condensed balance sheets. The Company recorded interest expense of $ 0.3 million and $ 0.6 million for the three and six months ended June 30, 2026, respectively, and $ 0.3 million and $ 0.4 million for the three and six months ended June 30, 2025, respectively. As of June 30, 2026, $ 1.9 million of accrued interest was included in other long-term liabilities. 6. License and Collaboration Agreements Asset Contribution Agreement with Pfizer In April 2018, the Company entered into an Asset Contribution Agreement (the Pfizer Agreement) with Pfizer pursuant to which the Company acquired certain assets and assumed certain liabilities from Pfizer, including agreements with Cellectis S.A. (Cellectis) and Servier as described below, and other intellectual property for the development and administration of chimeric antigen receptor (CAR) T cells for the treatment of cancer. The Company is required to make payments upon the achievement of certain sales and regulatory milestones and pay royalties on certain net sales pursuant to the Pfizer Agreement as further described in Note 6 to the Annual Report. For the three and six months ended June 30, 2026 and 2025, no milestones were achieved and no royalty payments were made. Research Collaboration and License Agreement with Cellectis As part of the Pfizer Agreement, Pfizer assigned to the Company a Research Collaboration and License Agreement (the Original Cellectis Agreement) with Cellectis S.A. (Cellectis). On March 8, 2019, the Company entered into a License Agreement (the Cellectis Agreement) with Cellectis and terminated the Original Cellectis Agreement. Pursuant to the Cellectis Agreement, Cellectis granted to the Company an exclusive, worldwide, royalty-bearing license, on a target-by-target basis, with sublicensing rights under certain conditions, under certain of Cellectis’s intellectual property, including its TALEN and electroporation technology, to make, use, sell, import, and otherwise exploit and commercialize CAR T products directed at certain targets, including B-cell maturation antigen (BCMA), CD70, Claudin 18.2, DLL3 and FLT3 (the Allogene Targets), for human oncologic therapeutic, diagnostic, prophylactic and prognostic purposes. The Company is required to make payments upon the achievement of certain development and sales milestones and pay royalties on certain net sales pursuant to the Cellectis Agreement as further described in Note 6 to the Annual Report. In April 2026, the Company received correspondence from Life Technologies Corporation (LTC), a subsidiary of Thermo Fisher Scientific, asserting that Cellectis had sublicensed to the Company or otherwise made available rights under certain patents licensed by LTC to Cellectis relating to TALEN technology, and that LTC had terminated its license agreements with Cellectis. Cellectis separately informed the Company that LTC had purported to terminate certain license agreements with Cellectis and commenced an arbitration against Cellectis and Cellectis Bioresearch before the American Arbitration Association. Cellectis also informed the Company that it disputes the purported termination and the claims asserted by LTC. 11 Table of Contents The Company is not a party to the arbitration and is evaluating the potential impact, if any, on its rights under the Cellectis Agreement and its other rights relating to product candidates that use TALEN technology. For the three and six months ended June 30, 2026 and 2025, no milestones were achieved and no royalty payments were made. Exclusive License Agreement with Servier As part of the Pfizer Agreement, Pfizer assigned to the Company an Exclusive License Agreement (the Original Servier Agreement), with Les Laboratoires Servier SAS and Institut de Recherches Internationales Servier SAS (collectively, Servier) to develop, manufacture and commercialize certain allogeneic anti-CD19 CAR T cell product candidates, including UCART19, in the United States with the option to obtain the rights over additional anti-CD19 product candidates and for allogeneic CAR T cell product candidates directed against one additional target. In October 2019, the Company agreed to waive its rights to the one additional target. On May 10, 2024, the Company and Servier entered into an Amendment and Settlement Agreement (the Servier Amendment) which restructured the parties’ relationship under the Original Servier Agreement (as amended, the Servier Agreement). The Company’s licensed territory was expanded to include the European Union and the United Kingdom. The Company was also granted an option to further extend its licensed territory to include China and Japan upon the objective showing of sufficient resources to develop licensed products in those countries, which could be met through the Company entering into a strategic partnership covering those countries. Additionally, the Company agreed to waive certain of its rights under the Original Servier Agreement to elect a conversion of its license to the products directed against CD19, including UCART19, ALLO-501 and cemacabtagene ansegedleucel (cema-cel, previously ALLO-501A) (collectively, CD19 Products) to a worldwide license. Under the Servier Agreement, the Company is required to use commercially reasonable efforts to develop, manufacture and commercialize a CD19 Product. Under the Servier Agreement, Servier sublicenses to the Company certain rights which Servier licenses from Cellectis pursuant to a License, Development and Commercialization Agreement by and between Cellectis and Servier, dated February 7, 2014, as amended by Amendment No. 1 to the License, Development and Commercialization Agreement, dated March 4, 2020 (as amended, the Servier-Cellectis Agreement). As amended by the Servier Amendment, all of the Company’s future milestone payments (regulatory and sales) under the Original Servier Agreement were modified to be the same as, and to coincide with, Servier’s milestone payments to Cellectis that are required under the Servier-Cellectis Agreement. The Servier Agreement provides for aggregate potential milestone payments by the Company to Servier of up to € 75.0 million upon successful completion of various regulatory milestones and first commercial sale milestones in the United States, European Union and the United Kingdom for the initial indication of each licensed product, of which € 60.0 million remains for the initial indication for cema-cel, with additional payments of € 55.0 million, due for each subsequent indication, of which € 50.0 million remains for the first subsequent indication for cema-cel, and aggregate potential payments by the Company to Servier of up to € 80.0 million upon achievement of certain net sales milestones for each licensed product. Should Servier’s rights and obligations under the Servier-Cellectis Agreement be assigned to the Company, these milestone payments would terminate, and the Company would assume Servier’s milestone payment obligations to Cellectis. In the absence of any such assignment, Servier will remain responsible for making milestone payments that may be due to Cellectis under the Servier-Cellectis Agreement. The Company previously transferred € 20.0 million into an escrow account in connection with a potential future milestone payment, which is included in the remaining € 60.0 million in milestone payments referenced above for the initial indication for cema-cel. The milestone would have been payable upon the occurrence of certain development, regulatory or adjudicative events. On December 15, 2025, an arbitral tribunal issued a decision providing for a partial termination of the Servier-Cellectis Agreement with respect to UCART19V1 (ALLO-501), which the Company previously abandoned in favor of cema-cel (formerly known as ALLO-501A). As a result, the Company's Servier license covering UCART19V1/ALLO-501 was terminated and Cellectis was required, at the Company's request, to engage in good-faith discussions regarding a direct license. On February 13, 2026, the € 20.0 million balance in escrow was remitted to the Company, resulting in net cash proceeds of $ 23.7 million. The Company is obligated to pay to Servier royalties on annual net sales of any licensed products that are commercialized by the Company that are directed at CD19. Such royalties include tiered royalties on annual net sales in the United States and a flat royalty on annual net sales in territories outside the United States. The United States royalty rates are in a range from the low tens to the mid teen percentages and the ex-U.S. royalty rate is 10 %. Such royalties may be reduced for interchangeable drug entry, expiration of patent rights and amounts paid pursuant to licenses of third-party patents. This royalty obligation begins upon the first commercial sale of such product in a given country and ends after the later of a defined number of years or the expiration of the last to expire licensed patent covering the product in such country. The net effect of the Servier Amendment is that the Company’s royalty rate in the United States for the first half of the first tier of net sales was increased by a low single digit percentage as compared to the Original Servier Agreement. Should Servier’s rights and obligations under the 12 Table of Contents Servier-Cellectis Agreement be assigned to the Company, each tier of royalty rates in the United States to Servier would be reduced by 10 %, the ex-U.S. royalties to Servier would terminate, and the Company would assume Servier’s royalty obligations to Cellectis. In the absence of any such assignment, Servier will remain responsible for making royalty payments that may be due to Cellectis under the Servier-Cellectis Agreement. The Company’s rights under the Servier Agreement with respect to CD19 Products, including cema-cel, depend in part on rights sublicensed by Servier from Cellectis. Accordingly, the purported termination of certain license agreements between LTC and Cellectis described above under “Research Collaboration and License Agreement with Cellectis” could also affect the Company’s rights with respect to CD19 Products if LTC were successful in challenging Cellectis’ rights and if the affected rights are necessary for the development, manufacture or commercialization of such products. The Company is not a party to the arbitration between LTC and Cellectis and is evaluating the potential impact, if any, on its rights under the Servier Agreement. For the three and six months ended June 30, 2026 and 2025, no milestones were achieved and no royalty payments were made. Research Collaboration and License Agreement with Roche (formerly Notch Therapeutics) On November 1, 2019, the Company entered into a Collaboration and License Agreement (the Notch Agreement) with Notch Therapeutics Inc. (Notch), pursuant to which Notch granted to Allogene an exclusive, worldwide, royalty-bearing, sublicensable license under certain of Notch’s intellectual property to develop, make, use, sell, import, and otherwise commercialize therapeutic gene-edited T cell and/or natural killer (NK) cell products from induced pluripotent stem cells directed at certain CAR targets for initial application in non-Hodgkin lymphoma, acute lymphoblastic leukemia and multiple myeloma. Pursuant to the Notch Agreement, the Company made certain investments in Notch’s capital stock as further described in Note 6 to the Annual Report. On January 25, 2024, the Company entered into an Amended and Restated Collaboration and License Agreement under which the Company has relinquished its exclusive rights to all original CAR targets except one, limited its option right to one additional CAR target and became entitled to a percentage of certain third party upfront and/or milestone payments (up to a stated cap) and a low, single-digit royalty on net sales if Notch out-licenses any released targets. If the option is exercised, the Company will have a minimum funding commitment for the overall development program. Following F. Hoffmann-La Roche AG’s (Roche) acquisition of Notch, in March 2025, Notch was dissolved, and Roche became Notch’s successor in interest under the Company’s agreement. In connection with such acquisition, on March 31, 2025 the Company entered into a Second Amendment to Amended and Restated Collaboration and License Agreement (Second Amended Notch Agreement) with Notch under which the definitions of certain terms were clarified, certain time periods for completing the transfer of certain technology were extended, and the scope of Allogene’s exclusive rights were clarified. Notch was dissolved on September 2, 2025 and final proceeds were distributed to the Company. The Company’s total equity investment in Notch as of June 30, 2026 and December 31, 2025 was zero . For the three and six months ended June 30, 2026 and 2025, no milestones were achieved. Strategic Alliance with The University of Texas MD Anderson Cancer Center On October 6, 2020, the Company entered into a strategic five-year collaboration agreement with The University of Texas MD Anderson Cancer Center (MD Anderson) for the preclinical and clinical investigation of allogeneic CAR T cell product candidates. In August 2025, the Company extended the term of the agreement for an additional year. The Company and MD Anderson are collaborating on the design and conduct of preclinical and clinical studies with oversight from a joint steering committee. Under the terms of the agreement, the Company has committed up to $ 15.0 million of funding for the duration of the agreement, of which $ 6.0 million remains. Payment of this funding is contingent on mutual agreement to study orders in order for any study to be included under the alliance. The Company is committed to making further payments to MD Anderson each year upon the anniversary of the agreement effective date through the duration of the agreement term, however, if MD Anderson has sufficient funds to continue the agreed-upon research projects, the Company may defer the additional payment to a later date. These costs are expensed to research and development as MD Anderson renders the services under the strategic alliance. Collaboration costs recorded as research and development expenses were $ 0.1 million and $ 0.2 million for the three and six months ended June 30, 2026, respectively, and $ 0.2 million and $ 0.6 million for the three and six months ended June 30, 2025, respectively. 13 Table of Contents Investment in and License Agreement with Overland Therapeutics, Inc. Allogene Overland Biopharm (CY) Limited (Allogene Overland), later renamed Overland Therapeutics Inc. (Overland Therapeutics), was initially established as a joint venture by the Company and Overland Pharmaceuticals (CY) Inc. (Overland) pursuant to a Share Purchase Agreement (Share Purchase Agreement), dated December 14, 2020. Concurrently, on December 14, 2020, the Company entered into a License Agreement (License Agreement) with Allogene Overland for the purpose of developing, manufacturing and commercializing certain allogeneic CAR T cell therapies for patients in greater China, Taiwan, South Korea and Singapore (the JV Territory). Pursuant to the Share Purchase Agreement, the Company and Overland acquired Seed Preferred Shares of Allogene Overland representing 49 % and 51 %, respectively, of Allogene Overland’s outstanding stock. On May 24, 2024, the Company, Overland, and Allogene Overland entered into a Share Exchange Agreement (Share Exchange Agreement) pursuant to which Overland’s cell therapy business merged into Allogene Overland (the Organizational Restructuring). Under the Share Exchange Agreement, Allogene Overland acquired from Overland a 100 % equity interest in Overland Pharmaceuticals (U.S.) Inc. (Overland U.S.). Overland U.S. includes certain research and development, clinical, and general and administrative staff, as well as select cell therapy assets, including its lead program, OL-101, an autologous GPRC5D-BCMA bispecific dual targeting CAR T for refractory multiple myeloma. Upon completion of the closing of the share exchange, Overland U.S. became a wholly owned subsidiary of Allogene Overland, Overland’s ownership increased to 82 % and the Company’s ownership decreased to 18 %. Under a separate agreement between Overland and HH BioPharma Holdings Ltd. (HBP) executed on May 24, 2024, Overland distributed all Series Seed Preferred Shares of Allogene Overland held by Overland to HBP and HBP has assumed all rights and obligations attached to such shares and all rights and obligations of Overland under the Share Exchange Agreement. In connection with the Organizational Restructuring, on May 24, 2024, the Company and Allogene Overland PRC, entered into a First Amendment to the License Agreement (the License Amendment) to amend and supplement certain provisions of the License Agreement. Under the License Amendment, the Company continued to grant Allogene Overland PRC an exclusive license to develop, manufacture, and commercialize the Licensed Products in the JV Territory, with the Company retaining exclusive rights to the Licensed Products outside the JV Territory, and the royalty obligations to the Company were amended to a flat mid single-digit royalty on net sales in the JV Territory that are no longer subject to reductions. The License Amendment also provided the Company with additional rights to terminate the License Agreement in its entirety or with respect to the relevant Overland Licensed Products if Allogene Overland PRC failed to initiate manufacturing technology transfer with respect to an Overland Licensed Product as agreed in the License Amendment, or if HBP committed a funding default or a material breach of its representations, warranties, or covenants under the Share Exchange Agreement. The License Amendment also provided that the License Agreement would terminate automatically if the Company’s ownership in Allogene Overland falls below 7.5 % (other than due to the Company’s sale of the shares of Allogene Overland), unless at that time Allogene Overland PRC and the Company had mutually agreed on the manufacturing technology transfer plan for the Overland Licensed Products and Allogene Overland PRC elected to continue the license for such Overland Licensed Products with increased milestones and royalties. Under the terms of the License Amendment, such increased milestones and royalties consisted of up to $ 115.0 million in milestone payments for each Overland Licensed Product and tiered mid-single-digit to low-double-digit royalties on net sales in the JV Territory. As part of the Organizational Restructuring, Allogene Overland was renamed Overland Therapeutics Inc. (Overland Therapeutics) and the Company determined that Overland Therapeutics was a variable interest entity. The Company does not have the power to direct the activities which most significantly affect Overland Therapeutics’ economic performance. Accordingly, the Company did not consolidate Overland Therapeutics because the Company determined that it was not the primary beneficiary. After the Organizational Restructuring, the Company had 20 % voting rights of Overland Therapeutics’ board of directors. The Company concluded that it has significant influence over Overland Therapeutics and continued to account for its investment in Overland Therapeutics as an equity method investment. The Company’s total equity investment in Overland Therapeutics as of December 31, 2025 was zero . On May 12, 2026, the Company entered into a termination agreement with Overland Therapeutics (SH) Co. Ltd. and Overland Therapeutics, Inc., pursuant to which the License Agreement was terminated in its entirety (the License Agreement Termination). In connection with the License Agreement Termination, the Company surrendered 40,353,951 shares of Overland Therapeutics for no consideration and the Company entered into the Second Amended and Restated Shareholders' Agreement among the Company, Overland Therapeutics and HBP. Mutual releases were exchanged between the parties and no termination payments were made. Following the License Agreement Termination, the Company’s ownership in Overland Therapeutics was reduced to approximately 3 % on an as-converted and fully diluted basis. Upon termination of the License Agreement, the two remaining performance obligations were extinguished as of May 12, 2026: i) $ 1.9 million for the manufacturing license, related know-how and support and (ii) $ 2.7 million to the know-how to be 14 Table of Contents developed in future periods. The Company concluded that the associated consideration of $ 4.6 million that was recorded in other long-term liabilities was nonrefundable and was therefore recognized as collaboration revenue — related party in the condensed statements of operations for the three and six months ended June 30, 2026. Following the License Agreement Termination, the Company’s ownership in Overland Therapeutics was reduced to approximately 3 % and the Company’s 20 % voting rights on Overland Therapeutics’ board of directors were eliminated. The Company re-performed its variable interest entity analysis and concluded that Overland Therapeutics continues to be a VIE for which the Company is not the primary beneficiary. The Company determined that it no longer has significant influence over Overland Therapeutics and, accordingly, prospectively reclassified its equity method investment to an equity security measured under the measurement alternative in accordance with ASC 321, Investments—Equity Securities, effective May 12, 2026. The initial cost basis at reclassification was zero . The Company retains approximately 3 % of Overland Therapeutics’ equity on an as-converted and fully diluted basis, carried at cost less any impairment, adjusted for observable price changes in orderly transactions. Under the Second Amended and Restated Shareholders’ Agreement, the Company retains certain protective shareholder rights including a tag-along right (co-sale right if HBP proposes to transfer more than 25 % of its shares to a non-affiliate), preemptive rights (pro rata participation in future equity issuances) and registration rights. These rights are protective in nature and do not constitute derivative instruments under ASC 815. For the three and six months ended June 30, 2026, the Company recognized $ 4.6 million of collaboration revenue — related party. Collaboration revenue was zero for the three and six months ended June 30, 2025. As of June 30, 2026, no deferred revenue related to the License Agreement remains. The Company’s total equity investment in Overland Therapeutics as of June 30, 2026 was zero . Collaboration and License Agreement with Antion On January 5, 2022, the Company entered into an exclusive collaboration and global license agreement (Antion Collaboration and License Agreement) with Antion Biosciences SA (Antion) for Antion’s miRNA technology (miCAR), to advance multiplex gene silencing as an additional tool to develop next generation allogeneic CAR T products. In July 2023, the Company and Antion entered into an amendment to the Antion Collaboration and License Agreement. Under the terms of this amendment, Antion’s exclusivity obligation relating to the collaboration was terminated; however, Antion agreed to certain restrictions on its ability to pursue products directed against specific targets. Also, in lieu of the Company’s prior obligation to make a $ 3.0 million investment in Antion following the completion of certain milestones, the Company agreed to make a $ 2.0 million investment in Antion’s preferred stock and acquired warrants to purchase an additional $ 3.0 million of Antion’s preferred stock. The Company is required to make payments upon the achievement of certain development and regulatory milestones and pay royalties on certain sales pursuant to the Antion Collaboration and License Agreement as further described in Note 6 to the Annual Report. As of June 30, 2026 and December 31, 2025, the Company’s total equity investment in Antion was zero . Strategic Collaboration Agreement with Foresight Diagnostics On January 3, 2024, the Company entered into a Strategic Collaboration Agreement with Foresight Diagnostics, Inc. (Foresight Diagnostics) (the Foresight Agreement). Foresight Diagnostics was acquired by Natera, Inc. (Natera) in December 2025 and continues to operate as a standalone subsidiary. Pursuant to the Foresight Agreement, the parties have agreed to collaborate on a non-exclusive basis in the development of Foresight Diagnostics’ minimal residual disease (MRD) assay based on their PhasED-Seq Circulating Tumor DNA Platform as an in vitro diagnostic to identify the MRD+ patient population to be enrolled in the Company’s planned ALPHA3 trial of cema-cel, for treatment of large B-cell lymphoma (LBCL). Under the Foresight Agreement, the Company has agreed to use its commercially reasonable efforts to obtain regulatory approval of cema-cel, and Foresight Diagnostics has agreed to use its commercially reasonable efforts to obtain regulatory approval of its MRD assay for use as an in vitro diagnostic with cema-cel. Under the Foresight Agreement, the Company has agreed to fund approximately $ 26.2 million in MRD assay development costs, milestone payments for regulatory submissions and assay utilization to process clinical samples. On February 19, 2025, the Company entered into an Amended and Restated Strategic Collaboration Agreement with Foresight Diagnostics which expands its collaboration to include the development of Foresight Diagnostics’ MRD assay for use with cema-cel as part of a possible EU and/or UK clinical development program, and as part of an expansion of ALPHA3 to Canadian and Australian clinical trial sites in support of the U.S. clinical development program. In November 2025, the Company amended the agreement, effective as of August 5, 2025, to add a workplan supporting clinical trial readiness activities for the expansion of ALPHA3 into South Korea. In total, the Company agreed to fund approximately $ 37.3 million in MRD 15 Table of Contents assay development costs, milestone payments for U.S., and certain international regulatory submissions and assay utilization costs to process clinical samples, all in addition to the financial commitments under the Foresight Agreement. Clinical trial milestones recorded as research and development expenses were $ 0.9 million and $ 3.4 million for the three and six months ended June 30, 2026, respectively, and $ 1.7 million and $ 3.2 million for the three and six months ended June 30, 2025, respectively. As of June 30, 2026 and December 31, 2025, $ 0.9 million and $ 1.4 million in research and development expenses, respectively, were recorded in accrued and other liabilities. 7. Commitments and Contingencies Leases In August 2018, the Company entered into an operating lease agreement (HQ Lease) for office and laboratory space which consists of approximately 68,000 square feet located in South San Francisco, California. In December 2021, the Company amended its lease agreement to lease an additional 47,566 square feet of office and laboratory space in South San Francisco, California, as part of the same building as the Company’s current headquarters. The lease term commenced in April 2022. The rent payments for the expansion premises began in August 2022. The lease term for both the existing and expansion premises will expire on March 31, 2032 with an option to extend the term for eight years which is not reasonably assured of exercise. In October 2018, the Company entered into an operating lease agreement for office and laboratory space which consists of 14,943 square feet located in South San Francisco, California. The lease term will expire March 31, 2032 with an option to extend the term for eight years which is not reasonably assured of exercise. In February 2019, the Company entered into a lease agreement for approximately 118,000 square feet of space to develop a cell therapy manufacturing facility in Newark, California. The lease term will expire on July 31, 2036 with two ten-year options to extend the lease, both of which are not reasonably assured of exercise. In February 2023, the Company entered into a sublease with Bellco Capital Advisors Inc. (Bellco) for 2,218 square feet of office space in Los Angeles, California, which was subsequently reduced to 1,944 square feet in February 2026. The sublease term is 115 months, subject to certain early termination rights. The sublease commenced on January 1, 2024. The Company maintains letters of credit for the benefit of landlords which are disclosed as restricted cash in the condensed balance sheets. Restricted cash related to letters of credit due to landlords was $ 6.0 million as of June 30, 2026 and December 31, 2025. The balance sheet classification of the Company’s lease liabilities was as follows (in thousands): June 30, 2026 December 31, 2025 Operating lease liabilities Current portion included in accrued and other current liabilities $ 8,656 $ 8,208 Lease liability, noncurrent 70,353 75,045 Total operating lease liabilities $ 79,009 $ 83,253 The components of lease costs for operating leases, which were recognized in operating expenses, were as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2026 2025 2026 2025 Operating lease cost $ 2,330 $ 2,512 $ 4,674 $ 5,037 Variable lease cost 769 478 1,370 1,034 Total lease costs $ 3,099 $ 2,990 $ 6,044 $ 6,071 16 Table of Contents The undiscounted future non-cancellable lease payments under the Company’s operating leases as of June 30, 2026 were as follows: Year ending December 31: (In thousands) 2026 (remaining 6 months) $ 6,602 2027 13,574 2028 14,038 2029 15,437 2030 16,148 2031 and thereafter 33,597 Total undiscounted lease payments 99,396 Less: Present value adjustment ( 20,387 ) Total $ 79,009 Operating lease liabilities are based on the net present value of the remaining lease payments over the remaining lease term. In determining the present value of lease payments, the Company uses its estimated incremental borrowing rate. The weighted average discount rate used to determine the operating lease liability was 6.51 %. As of June 30, 2026, the weighted average remaining lease term for the Company’s operating leases is 6.70 years. In December 2024 and January 2025, the Company entered into non-cancelable agreements under which it subleased approximately 46,011 square feet of its HQ Lease to two unaffiliated companies. In July 2025, the Company entered into a non-cancelable agreement under which it subleased one of its leased buildings in South San Francisco to one unaffiliated company. The Company recognized $ 0.7 million and $ 1.5 million during the three and six months ended June 30, 2026, respectively, and $ 0.8 million and $ 1.2 million during the three and six months ended June 30, 2025, respectively, in sublease income under the interest and other income, net caption within the condensed statements of operations. Other Commitments In July 2020, the Company entered into a Solar Power Purchase and Energy Services Agreement for the installation and operation of a solar photovoltaic generating system and battery energy storage system at the Company’s cell therapy manufacturing facility in Newark, California. The agreement has a term of 20 years and commenced in September 2022. The Company is obligated to pay for electricity generated from the system at an agreed rate for the duration of the agreement term. Termination of the agreement by the Company will result in a termination payment due of approximately $ 4.3 million. In connection with the agreement, the Company maintains a letter of credit for the benefit of the service provider in the amount of $ 4.3 million which is recorded as restricted cash in the condensed balance sheets as of June 30, 2026 and December 31, 2025. The Company has entered into certain license agreements for intellectual property which is used as part of its development and manufacturing processes. Each of these respective agreements is generally cancellable by the Company. These agreements require payment of annual license fees and may include conditional milestone payments for achievement of specific research, clinical and commercial events, and royalty payments. The timing and likelihood of any significant conditional milestone payments or royalty payments becoming due was not probable as of June 30, 2026. Legal Proceedings In the ordinary course of business, the Company or its business partners are from time to time subject to legal claims and regulatory actions that could have a material adverse effect on its business or financial position. The Company assesses its potential liability in such situations by analyzing the possible outcomes of various litigation, regulatory, and settlement strategies. If the Company determines that a material loss is probable and its amount can be reasonably estimated, it will accrue an amount equal to the estimated loss. As of June 30, 2026, the Company did not accrue any estimated losses related to its ongoing legal proceedings. 8. Stockholder’s Equity Common Stock On June 18, 2026, the Company’s stockholders approved an increase to the number of authorized shares of its common stock from 400,000,000 shares to 800,000,000 shares. 17 Table of Contents 9. Stock-Based Compensation As of June 30, 2026, there were 9,188,231 shares reserved by the Company under the 2018 Equity Incentive Plan (the 2018 Plan) for the future issuance of equity awards. Stock Option Activity The following summarizes option activity under the 2018 Plan: Outstanding Options Number of Options Weighted- Average Exercise Price Weighted- Average Remaining Contract Term Aggregate Intrinsic Value (in years) (in thousands) Balance as of December 31, 2025 31,138,077 $ 6.31 7.17 $ 97 Options granted 7,193,563 1.88 9.51 Options exercised ( 2,438 ) $ 1.94 Options forfeited ( 1,177,247 ) 4.80 Balance as of June 30, 2026 37,151,955 5.50 7.41 $ 3,562 Exercisable as of June 30, 2026 22,929,684 7.69 6.39 $ 566 Vested and expected to vest as of June 30, 2026 37,151,955 $ 5.50 7.41 $ 3,562 Restricted Stock Unit Activity The following summarizes restricted stock unit activity under the 2018 Plan: Outstanding Restricted Stock Units Restricted Stock Units Weighted- Average Grant Date Fair Value per Share Weighted Average Remaining Vesting Life Aggregate Intrinsic Value (in years) (in thousands) Balance as of December 31, 2025 16,528,226 $ 2.99 2.39 $ 22,644 Granted 4,566,769 1.90 1.93 Released ( 2,803,123 ) 3.73 Forfeited ( 2,112,821 ) 2.60 Balance as of June 30, 2026 16,179,051 2.60 2.60 $ 33,652 Expected to vest as of June 30, 2026 16,179,051 $ 2.60 2.60 $ 33,652 Vested and unreleased as of June 30, 2026 477,000 $ 1.29 $ 992 As of June 30, 2026, the Company had 4,689,631 outstanding performance-based restricted stock units. No performance-based restricted stock units were granted during the six months ended June 30, 2026. These awards are subject to the holders’ continuous service to the Company through each applicable vesting event. Through June 30, 2026, the Company believes that the achievement of the requisite performance conditions for these awards are not probable. As a result, no compensation expense has been recognized related to the performance-based restricted stock units in the three and six months ended June 30, 2026 and 2025. As of June 30, 2026, the Company had zero outstanding restricted stock units with a market condition to certain executive officers and other employees pursuant to the 2018 Plan. Stock-based compensation expense recognized related to the restricted stock units with a market condition was zero and less than $ 0.1 million for the three and six months ended June 30, 2026 and 2025, respectively. 18 Table of Contents Stock-based compensation expense For the three and six months ended June 30, 2026 and 2025, the following table presents stock-based compensation expense related to stock options, restricted stock units and employee stock purchase plans that was recorded as research and development and general and administrative expense in its condensed statements of operations and comprehensive loss: Three Months Ended June 30, Six Months Ended June 30, 2026 2025 2026 2025 Research and development $ 2,124 $ 2,557 $ 4,820 $ 7,597 General and administrative 10,316 6,128 15,890 13,263 Total stock-based compensation $ 12,440 $ 8,685 $ 20,710 $ 20,860 10. Related Party Transactions Collaboration Revenue and Equity Method Investment In December 2020, the Company entered into the License Agreement with Overland Therapeutics, a corporate joint venture entity and related party (see Note 6). The License Agreement was subsequently assigned to a wholly-owned subsidiary of Allogene Overland, Allogene Overland HK. On April 1, 2022, Allogene Overland HK assigned the License Agreement to Allogene Overland Biopharm (PRC) Co., Limited. On May 24, 2024, the License Agreement was amended. On May 12, 2026, the License Agreement was terminated. Sublease Agreement In December 2018, the Company entered into a sublease with Bellco Capital LLC for 1,293 square feet of office space in Los Angeles, California for a three year term. On April 1, 2020, Bellco Capital Advisors Inc. (Bellco) assumed all rights, title, interests and obligations under the sublease from Bellco Capital LLC. In November 2021, the sublease was extended to June 30, 2025. The sublease was amended, effective in July 2022, to move to a nearby location, with office space of 737 square feet. In 2023, the Company exercised its early termination right under the sublease agreement and the sublease was terminated effective December 31, 2023. In February 2023, the Company entered into a new sublease agreement with Bellco for 2,218 square feet of office space in Los Angeles, California, which was subsequently reduced to 1,944 square feet in February 2026. The Company’s executive chairman, Arie Belldegrun, M.D., is a trustee of the Belldegrun Family Trust, which controls Bellco. The sublease term is 115 months, subject to certain early termination rights. The sublease commenced on January 1, 2024. The total right of use asset and associated lease liability recorded related to this related party lease were $ 1.9 million and $ 1.9 million, respectively, as of June 30, 2026. The Company paid approximately $ 0.2 million towards its share of the security deposit. Rent expense related to this sublease were $ 0.1 million and $ 0.2 million for the three and six months ended June 30, 2026, respectively, and $ 0.1 million and $ 0.2 million for the three and six months ended June 30, 2025, respectively. Consulting Agreements In August 2018, the Company entered into a consulting agreement with Bellco. Pursuant to the consulting agreement, Bellco provides certain services for the Company, which are performed by Dr. Belldegrun, the Company’s executive chair, and inc lude without limitation, providing advice and analysis with respect to the Company’s business, business strategy and potential opportunities in the field of allogeneic CAR T cell therapy and any other aspect of the CAR T cell therapy business as the Company may agree. In consideration for these services, the Company paid Bellco $ 40,217 per month in arrears commencing January 2022. Effective January 2026, the monthly consulting service fee was increased by 2 % to $ 41,021 per month. The Company may also, at its discretion, pay Bellco an annual performance award in an amount up to 60 % of the aggregate compensation payable to Bellco in a calendar year. The Company also reimburses Bellco for out of pocket expenses incurred in performing the services. The costs incurred for services provided, bonus, and out-of-pocket expenses incurred under this consulting agreement were $ 0.2 million and $ 0.4 million for the three and six months ended June 30, 2026, respectively, and $ 0.2 million and $ 0.4 million for the three and six months ended June 30, 2025, respectively. Co-Manager Agreement 19 Table of Contents On April 14, 2026, the Company entered into an underwriting agreement (Underwriting Agreement) with Goldman Sachs & Co. LLC, Jefferies LLC and TD Securities (USA) LLC, as representatives of the several underwriters named therein (Underwriters), relating to the April 2026 Public Offering. On April 16, 2026, the Company sold 100,200,000 shares to the Underwriters. The price to the public in the offering was $ 2.00 per share. The underwriting discount was $ 0.12 per share. TPG Capital BD, LLC served as an Underwriter for the offering and purchased an aggregate of 3,807,600 shares from the Company at a price of $ 1.88 per share, resulting in an aggregate underwriting discount to TPG Capital BD, LLC of approximately $ 0.5 million. Todd Sisitsky, who was a member of the Company’s Board of Directors at the time of the offering, has served as President and on the Board of Directors of TPG Inc., an affiliate of TPG Capital BD, LLC, since TPG Inc.’s inception. 11. Income Taxes The Company has a history of losses and expects to record a loss in 2026. The Company continues to maintain a full valuation allowance against its net deferred tax assets. 12. Net Loss Per Share The following outstanding potentially dilutive shares have been excluded from the calculation of diluted net loss per share for the period presented due to their anti-dilutive effect: June 30, 2026 2025 Stock options to purchase common stock 37,151,955 31,291,497 Restricted stock units outstanding (excluding vested but unreleased shares, which are included in weighted-average common shares outstanding) 16,179,051 17,223,279 Expected shares to be purchased under Employee Stock Purchase Plan 1,224,392 2,372,249 Total 54,555,398 50,887,025 13. Segment Reporting The Company has one reportable segment related to developing and commercializing genetically engineered allogeneic T cell product candidates for the treatment of cancer and autoimmune diseases. The segment derives its current revenues from research and development collaborations. The CEO, as the chief operating decision maker, manages and allocates resources for the Company’s operations at a consolidated company basis by assessing how to best deploy available resources across functions and research and development projects. The CEO uses consolidated, single-segment financial information for purposes of evaluating performance, planning and forecasting future period financial results, and allocating resources. The table below is the summary of the segment profit or loss information, including the significant segment expenses (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2026 2025 2026 2025 Collaboration revenue - related party $ 4,640 $ — $ 4,640 $ — Significant operating expenses: Cema-cel $ 6,954 $ 6,865 14,623 13,087 All other development costs 2,408 4,896 4,407 15,286 Payroll 14,482 17,628 28,926 37,229 Facilities & IT-related spend 7,288 7,384 13,706 14,703 Supporting external spend 5,254 5,390 9,626 11,236 Other operating expenses 15,174 14,656 26,364 30,469 Total operating expenses 51,560 56,819 97,652 122,010 Other income (expenses), net 4,243 5,876 7,728 11,334 Net loss ( 42,677 ) ( 50,943 ) ( 85,284 ) ( 110,676 ) 20 Table of Contents Cema-cel includes external development and clinical trial costs related to ALPHA3, ALPHA2, CLL, and ALLO-501 programs. All other development costs include external development and clinical trial costs related to ALLO-329, ALLO-316, ALLO-647, BCMA, and other programs. Supporting external spend includes professional services, research and development lab supplies and other supporting activities related to the research and development and other business operations. Other operating expenses are primarily related to non-cash expenses such as stock-based compensation, impairment, and depreciation and amortization. The measure of segment assets is reported on the balance sheets as total assets. Primarily, all revenue generated and all long-lived assets are maintained in the United States. 21 Table of Contents Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations. You should read the following discussion of our financial condition and results of operations in conjunction with our unaudited condensed financial statements and the related notes and other financial information included elsewhere in this Quarterly Report on Form 10-Q (Quarterly Report) and the audited financial statements and notes thereto as of and for the year ended December 31, 2025 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in our Annual Report on Form 10-K for the year ended December 31, 2025 (Annual Report), which was filed with the Securities and Exchange Commission (SEC) on March 12, 2026. Unless the context requires otherwise, references in this Quarterly Report to the “Company”, “Allogene,” “we,” “us” and “our” refer to Allogene Therapeutics, Inc., and references to “Servier” collectively refer to Les Laboratoires Servier SAS and Institut de Recherches Internationales Servier SAS. In addition to historical financial information, this discussion contains forward-looking statements based upon current expectations that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth in the section titled “Risk Factors” under Part II, Item 1A below. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potentially,” “predict,” “should,” “will” or the negative of these terms or other similar expressions. In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this Quarterly Report, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements . Overview We are a clinical stage immuno-oncology company pioneering the development of genetically engineered allogeneic T cell product candidates for the treatment of cancer and autoimmune diseases. We are developing a pipeline of “off-the-shelf” T cell product candidates that are designed to target and kill cancer cells in patients or eliminate pathogenic autoreactive cells in patients with autoimmune disorders. Our engineered T cells are allogeneic, meaning they are derived from healthy donors for intended use in any patient, rather than from an individual patient for that patient’s use, as in the case of autologous T cells. We believe this key difference will enable us to deliver readily available treatments faster, more reliably, at greater scale, and to more patients. We have a deep pipeline of allogeneic chimeric antigen receptor (CAR) T cell product candidates targeting multiple promising antigens in a host of hematological malignancies, solid tumors and autoimmune diseases. We are focusing our resources on three core programs: ALPHA3, RESOLUTION and TRAVERSE clinical trials. In June 2024, we initiated a pivotal Phase 2 clinical trial (ALPHA3) evaluating cemacabtagene ansegedleucel (cema-cel, previously ALLO-501A) as part of a first-line (1L) consolidation treatment for patients newly diagnosed with large B-cell lymphoma (LBCL) who, despite initial treatment success, remain at high risk for relapse. The study is currently enrolling at over 80 sites across the United States, Canada, South Korea and Australia. We are continuing activities to support the potential expansion of ALPHA3 into the European Union, subject to applicable regulatory approvals and operational requirements. Our expansion of ALPHA3 internationally is expected to bring the trial to approximately 100 sites worldwide. The ALPHA3 trial design expands on findings from our Phase 1 ALPHA2 study and incorporates an investigational diagnostic developed by Foresight Diagnostics, Inc., which was acquired by Natera, Inc. (Natera) in December 2025 and continues to operate as a standalone subsidiary. This diagnostic test identifies patients who, despite achieving remission according to standard evaluations, remain at risk of relapse due to minimal residual disease (MRD) following 1L chemoimmunotherapy. Patients eligible for enrollment include those who achieve either a complete response or a near-complete partial response to initial treatment and would otherwise be monitored through observation as the current standard of care. The trial’s primary endpoint is event-free survival (EFS). Initially, the trial was designed to randomize approximately 240 MRD-positive patients into one of three arms: (1) cema-cel therapy following lymphodepletion with standard fludarabine and cyclophosphamide (FC arm), (2) cema-cel therapy following lymphodepletion with fludarabine, cyclophosphamide, and ALLO-647 (an anti-CD52 monoclonal antibody) (FCA arm), or (3) standard-of-care observation (control arm). On August 1, 2025, we announced that we selected standard fludarabine and cyclophosphamide (FC) as the lymphodepletion regimen. This lymphodepletion regimen selection was made in conjunction with the ALPHA3 Data and Safety Monitoring Board (DSMB) and Steering Committee and following consultation with the U.S. Food and Drug Administration (FDA). 22 Table of Contents The FCA arm is now closed to further enrollment. This decision, made ahead of the scheduled futility analysis, was prompted by a Grade 5 adverse event in the FCA arm that has been attributed to the use of ALLO-647. The event occurred on Day 54 post-infusion from hepatic failure, believed to have resulted from disseminated adenovirus infection in the setting of immune suppression. This event was deemed unrelated to cema-cel. Severe viral infections have been rare across our clinical trials. However, when present, they have been attributed to immunosuppression due in part to ALLO-647. There have been no cases of adenoviral infection or hepatic failure in any participant treated with only FC lymphodepletion across our trials. Following the adoption of standard FC in the ALPHA3 trial, none of our trials open to enrollment or pipeline programs include ALLO-647. Instead, we will advance our next-generation AlloCAR T product candidates using the proprietary Dagger® Platform Technology, which is designed to minimize or potentially eliminate the need for standard lymphodepletion. The amended ALPHA3 trial is proceeding as a randomized study with two arms, comparing cema-cel after standard FC lymphodepletion to observation, the current standard of care, and is expected to enroll approximately 220 MRD-positive randomized patients. We recently amended the protocol to add a non-randomized observational cohort of approximately 140 MRD-negative patients, who will be followed to further characterize MRD test performance. We do not expect this observational cohort to impact the enrollment timeline for the existing randomized MRD-positive portion of the trial. The protocol amendment also expanded the disease subtypes that may qualify patients for enrollment to include transformed follicular lymphoma, transformed marginal zone lymphoma and follicular lymphoma grade 3B. The statistical design and prespecified conduct of the randomized MRD-positive portion of the trial remain unchanged. On April 13, 2026, we announced results from the planned interim futility analysis of the first 24 randomized patients to the two ongoing arms in ALPHA3. At the protocol-defined data cutoff, which was triggered when the 24th patient completed Day 45 MRD assessment, MRD negativity was observed in 58.3% (7/12) of patients in the cema-cel arm compared with 16.7% (2/12) of patients in the observation arm, and at the Day 45 post-randomization MRD assessment, ctDNA levels decreased from baseline by a median of 97.7% in the cema-cel arm compared with a median increase of 26.6% in the observation arm. The primary endpoint of EFS and key secondary endpoints, including progression-free survival and overall survival, remain blinded. In the cema-cel arm, no treatment-related serious adverse events, cytokine release syndrome, immune effector cell-associated neurotoxicity syndrome, graft-versus-host disease or treatment-related hospitalizations were reported, and ten of the twelve treated patients were managed in the outpatient setting post-infusion. At the time of the interim analysis, approximately one-third of screening activity and cema-cel infusions occurred at community cancer centers, including sites with limited prior CAR T experience. We believe this early experience supports the potential for cema-cel to be administered in a broader range of treatment settings than autologous CAR T therapies, although these data remain limited and may not be predictive of future outpatient or community-based administration. We anticipate completing enrollment of the randomized MRD-positive portion of ALPHA3 by the end of 2027, conducting an interim EFS analysis in mid-2027, and conducting the primary EFS analysis in mid-2028. In July 2026, the FDA granted RMAT and Fast Track designations to cema-cel for the ALPHA3 development program as a potential first-line consolidation treatment for patients with large B-cell lymphoma (LBCL). These designations are intended to facilitate more frequent engagement with the FDA and may support an expedited development and review process if applicable criteria are satisfied. We are also advancing ALLO-316, and we have completed enrollment of 20 treated patients in an expansion cohort in a Phase 1b clinical trial (TRAVERSE) of ALLO-316, an allogeneic CAR T cell product candidate targeting CD70, in adult patients with advanced or metastatic clear cell renal cell carcinoma (RCC). The Phase 1b expansion cohort evaluated ALLO-316 administered as a single dose of 80 million CAR T cells following a standard lymphodepletion regimen (fludarabine 30 mg/m²/day and cyclophosphamide 500 mg/m²/day for three days). On October 29, 2024, we announced that we had received Regenerative Medicine Advanced Therapy (RMAT) designation for ALLO-316 for adult patients with advanced or metastatic RCC. In results from the Phase 1 TRAVERSE trial published in the Journal of Clinical Oncology on July 14, 2026, based on a November 3, 2025 data cutoff, ALLO-316 demonstrated a confirmed overall response rate (ORR) of 25.0% (five of 20 patients; 95% confidence interval, 8.7% to 49.1%) in the Phase 1b cohort and 31.3% (five of 16 patients; 95% confidence interval, 11.0% to 58.7%) in patients with high CD70 expression (TPS ≥50%). Seven of the 20 Phase 1b patients, or 35.0%, achieved a greater than 30% reduction in target-lesion size from baseline. No responses were observed among the four Phase 1b patients with CD70 TPS below 50%. The median duration of response was not estimable (95% confidence interval, 6.9 months to not estimable), and no progression events had occurred among responders after a minimum follow-up of eight months. The median overall survival was 15.2 months in the overall Phase 1b population and was not estimable in the CD70-high subgroup. We have implemented a diagnostic and treatment algorithm designed to mitigate treatment-associated immune effector cell-associated hemophagocytic lymphohistiocytosis-like syndrome (IEC-HS) while preserving CAR T efficacy. In the Phase 1b safety population, IEC-HS was reported in eight of 22 patients, or 36.4%, including two patients, or 9.1%, with Grade 3 or higher events. No Grade 5 IEC-HS events occurred. Cytokine release syndrome was reported in 68.2% of patients, with no Grade 3 or higher events; immune effector cell-associated neurotoxicity syndrome was reported in 18.2%, with no Grade 3 or 23 Table of Contents higher events; and no graft-versus-host disease occurred. The publication reported that IEC-HS was largely controlled in the final 20 patients enrolled following implementation of diagnostic criteria and the tailored treatment algorithm. No Grade 5 treatment-related adverse events occurred in the Phase 1b cohort. In July 2025, we held an RMAT meeting with the FDA regarding next steps for the ALLO-316 development program, and we believe we have reached alignment with the FDA on the design of a registration trial for adult patients with advanced or metastatic RCC. We continue to actively explore strategic opportunities, including potential partnerships, to advance this program. We are developing ALLO-329, a next-generation allogeneic CAR T cell product candidate targeting both CD19 and CD70 for the treatment of certain autoimmune diseases (AID). Inclusion of an anti-CD70 CAR in ALLO-329 incorporates the Dagger® technology, which is designed to reduce or eliminate the need for standard chemotherapy by preventing premature rejection while targeting CD19+ B cells and CD70+ activated T cells, both of which play a role in AID. ALLO-329 is manufactured using CRISPR gene-editing technology. In 2025, we initiated a Phase 1 rheumatology basket study of ALLO-329 (RESOLUTION trial). The ongoing RESOLUTION trial is a 3+3 dose-escalation study evaluating ALLO-329 across multiple autoimmune diseases, including systemic lupus erythematosus (SLE), including lupus nephritis, idiopathic inflammatory myopathies (IIM), and systemic sclerosis (SSc). On April 7, 2025, we announced that ALLO-329 had received three Fast Track Designations from the FDA for the treatment of adult patients with SLE, IIM, and SSc. The RESOLUTION trial is evaluating ALLO-329 under multiple treatment approaches, including administration following cyclophosphamide-based lymphodepletion, with the option of adding fludarabine permitted under the protocol, and administration in a separate arm without lymphodepletion. We recently activated the optional fludarabine and cyclophosphamide lymphodepletion dose-escalation arm to further assess the role of fludarabine in the autoimmune indications being studied and to accommodate ongoing patient demand for participation in the trial. We provided an enrollment update in May 2026, and enrollment continues to progress. Dose escalation and lymphodepletion optimization are ongoing, and we expect to provide a clinical and translational data update in late 2026. In April 2026, Nature Communications published preclinical data supporting the design of ALLO-329 and our CD70 Dagger® technology. The publication described an optimized CD70 CAR designed to prevent rejection of allogeneic CAR T cells by targeting activated alloreactive lymphocytes. In the reported preclinical studies, co-expression of the CD70 CAR with a CD19 CAR resulted in sustained CAR T-cell persistence in the presence of alloreactive lymphocytes and prolonged antitumor activity in a CD19 antigen escape model. In humanized mouse models, CD19/CD70 dual CAR T cells eliminated B cells and CD70+ T cells derived from patients with systemic lupus erythematosus and reduced immunoglobulin production. These preclinical data support the rationale for evaluating ALLO-329 as an allogeneic CD19/CD70 dual CAR T product candidate designed to target CD19+ B cells and CD70+ activated T cells while potentially reducing or eliminating the need for standard lymphodepletion. While we have additional programs in our pipeline, our clinical development priorities are focused on cema-cel (1L Consolidation), ALLO-316 and ALLO-329. The development of our other product candidates is currently focused on preclinical studies, including studies of BCMA and DLL3 CARs with and without our CD70 Dagger® protein technology, and various manufacturing improvements that may be applicable to such product candidates. In April 2026, preclinical data presented at the American Association for Cancer Research Annual Meeting described an allogeneic BCMA/CD70 dual CAR T construct designed to target BCMA and CD70 in a relevant experimental model while incorporating CD70-directed rejection avoidance. In the reported preclinical studies, BCMA/CD70 dual CAR T cells demonstrated specific cytotoxic activity, resistance to allorejection, expansion in mixed lymphocyte reaction assays, activity in a xenograft model and activity against BCMA target cells that had downregulated BCMA. In May 2024, we entered into an Amendment and Settlement Agreement (the Servier Amendment) under which we expanded the geographic territory for our CD19 license to include the EU and the UK. The Servier Amendment also grants us an option to further expand the licensed territory to include China and Japan upon the objective showing of sufficient resources to develop licensed products in those countries, which could be met through the Company entering into a strategic partnership covering those countries. Additionally, in February 2025, we entered into an Amended and Restated Strategic Collaboration Agreement with Foresight Diagnostics (which was acquired by Natera in December 2025 and continues to operate as a standalone subsidiary), which expands our collaboration to enable the development of Foresight Diagnostics’ MRD assay in the EU, UK, Canada and Australia in support of our clinical development of cema-cel, and subsequently further expanded the collaboration to include South Korea. In May 2025, we initiated a workforce reduction of approximately 28% of our employees (Workforce Reduction) in connection with a reduction in manufacturing operations and a reprioritization of resources to focus on our ongoing clinical programs. The Workforce Reduction was substantially completed in the second quarter of 2025, and we incurred $3.2 million in cash-based expenses related to employee severance payments, benefits and related costs in connection with the Workforce Reduction. Following our April 2026 announcement of ALPHA3 interim results and Public Offering, we have increased hiring activities to support our manufacturing, clinical development and BLA-readiness efforts. 24 Table of Contents On May 28, 2026, we announced a planned leadership change. David Chang, M.D., Ph.D. transitioned from his role as President and Chief Executive Officer effective June 30, 2026 and continues to serve on our Board of Directors as a non-employee director. Zachary Roberts, M.D., Ph.D., previously our Executive Vice President, Research & Development and Chief Medical Officer, was appointed President and Chief Executive Officer and appointed to our Board of Directors, effective July 1, 2026. Dr. Roberts will also continue as Chief Medical Officer on an interim basis. Since inception, we have had significant operating losses. Our net loss was $42.7 million and $85.3 million for the three and six months ended June 30, 2026, respectively. As of June 30, 2026, we had an accumulated deficit of $2.1 billion. As of June 30, 2026, we had $423.6 million in cash and cash equivalents and investments. We expect our cash runway, including the net proceeds from the April 2026 Public Offering, to fund operations into the first quarter of 2029. We expect to continue to incur net losses for the foreseeable future, and we expect our research and development expenses and general and administrative expenses will continue to increase. Our License and Collaboration Agreements Below is a summary of the key terms for certain of our licenses and collaboration agreements. For a more detailed description of these agreements, refer to Note 6 to our consolidated financial statements included in our Annual Report. Asset Contribution Agreement with Pfizer In April 2018, we entered into an Asset Contribution Agreement (the Pfizer Agreement) with Pfizer pursuant to which we acquired certain assets and assumed certain liabilities from Pfizer, including agreements with Cellectis S.A. (Cellectis) and Servier as described below, and other intellectual property for the development and administration of CAR T cells for the treatment of cancer. Research Collaboration and License Agreement with Cellectis In June 2014, Pfizer entered into a Research Collaboration and License Agreement with Cellectis. In April 2018, Pfizer assigned the agreement to us pursuant to the Pfizer Agreement. In March 2019, we terminated the agreement with Cellectis and entered into a new license agreement with Cellectis (the Cellectis Agreement). Under the Cellectis Agreement, Cellectis granted us an exclusive, worldwide, royalty-bearing license, on a target-by-target basis, with sublicensing rights under certain conditions, under certain of Cellectis’s intellectual property, including its TALEN and electroporation technology, to make, use, sell, import, and otherwise exploit and commercialize CAR T products directed at certain targets, including BCMA, CD70, Claudin 18.2, DLL3 and FLT3 (the Allogene Targets), for human oncologic therapeutic, diagnostic, prophylactic and prognostic purposes. Exclusive License Agreement with Servier In October 2015, Pfizer entered into an Exclusive License Agreement with Servier (the Original Servier Agreement) to develop, manufacture and commercialize certain allogeneic anti-CD19 CAR products, including UCART19, in the United States with the option to obtain the rights over certain additional allogeneic anti-CD19 CAR product candidates and for allogeneic CAR T cell product candidates directed against one additional target. In April 2018, Pfizer assigned the agreement to us pursuant to the Pfizer Agreement. In October 2019, we agreed to waive our rights to the one additional target. In May 2024, we entered into an Amendment and Settlement Agreement (the Servier Amendment) with Servier under which we: (1) expanded our territory under the Original Servier Agreement to include the European Union and the United Kingdom, and provided for an option to further expand our territory to include China and Japan, (2) waived certain of our rights to elect to convert certain of our license rights to a worldwide license, (3) revised our future milestone payments to coincide with Servier’s milestone payments to Cellectis under the Servier-Cellectis Agreement, (4) agreed to pre-pay a future €20 million milestone payment into an escrow account, and (5) increased the United States tiered royalty rates to a range from the low tens to the mid teen percentages, and agreed to an ex-U.S. royalty rate of 10%. On December 15, 2025, Cellectis publicly reported that an arbitral tribunal issued a decision providing for a partial termination of the Servier-Cellectis Agreement with respect to UCART19V1, which is the same as ALLO-501, a product candidate which we previously abandoned in favor of cema-cel (formerly known as ALLO-501A), and affirmed continued licensing rights relating to cema-cel. As a result of that decision, our Servier license covering UCART19V1/ALLO-501 was automatically terminated. The arbitration decision requires Cellectis, at our request, to engage in good-faith discussions regarding the granting of a direct license to UCART19V1/ALLO-501. Collaboration and License Agreement with Roche (formerly Notch) 25 Table of Contents On November 1, 2019, we entered into a Collaboration and License Agreement (the Notch Agreement) with Notch Therapeutics Inc. (Notch), pursuant to which Notch granted us an exclusive, worldwide, royalty-bearing, sublicensable license under certain of Notch’s intellectual property to develop, make, use, sell, import, and otherwise commercialize therapeutic gene-edited T cell and/or natural killer cell products from induced pluripotent stem cells directed at certain CAR targets for initial application in NHL, B-cell precursor acute lymphoblastic leukemia (ALL) and multiple myeloma. In addition, Notch had granted us an option to add certain specified targets to our exclusive license in exchange for an agreed upon per-target option fee. On January 25, 2024, we entered into an Amended and Restated Collaboration and License Agreement (the Amended Notch Agreement) with Notch. The Amended Notch Agreement amends and restates the Notch Agreement. Under the Amended Notch Agreement, we have relinquished our exclusive rights to all original CAR targets (the Released Targets) except for one CAR target, and have agreed to limit our option right to only one additional CAR target. If the option is exercised, we will have a minimum funding commitment for the overall development program. If Notch subsequently out-licenses any of the Released Targets (whether through an out-license, partnership, sale, or other transaction), we will be entitled to receive a percentage of upfront and/or milestone payments associated therewith up to a set cap of $30.0 million, and will be entitled to a low, single-digit royalty on net sales of products containing a Released Target. Following F. Hoffmann-La Roche AG’s (Roche) acquisition of Notch, in March 2025, Notch was dissolved, and Roche became Notch’s successor in interest under our agreement. In connection with such acquisition, on March 31, 2025 we entered into a Second Amendment to Amended and Restated Collaboration and License Agreement (Second Amended Notch Agreement) with Notch under which the definitions of certain terms were clarified, certain time periods for completing the transfer of certain technology were extended, and the scope of Allogene’s exclusive rights were clarified. Strategic Alliance with The University of Texas MD Anderson Cancer Center On October 6, 2020, we entered into a strategic five-year collaboration agreement with The University of Texas MD Anderson Cancer Center (MD Anderson) for the preclinical and clinical investigation of allogeneic CAR T cell product candidates. In August 2025, the Company extended the term of the agreement for an additional year. License Agreement with Overland Therapeutics, Inc. On December 14, 2020, we entered into a License Agreement with Allogene Overland Biopharm (CY) Limited (Allogene Overland) (the License Agreement), a joint venture established by us and Overland Pharmaceuticals (CY) Inc. (Overland), pursuant to a Share Purchase Agreement (Share Purchase Agreement), dated December 14, 2020, for the purpose of developing, manufacturing and commercializing certain allogeneic CAR T cell therapies directed at four targets, BCMA, CD70, FLT3 and DLL3 (Overland Licensed Products) for patients in greater China, Taiwan, South Korea and Singapore (the JV Territory). Allogene Overland subsequently assigned the License Agreement to a wholly owned subsidiary, Allogene Overland BioPharm (HK) Limited (Allogene Overland HK). On April 1, 2022, Allogene Overland HK assigned the License Agreement to Allogene Overland Biopharm (PRC) Co., Limited (Allogene Overland PRC). On May 24, 2024, we, Overland and Allogene Overland entered into a Share Exchange Agreement (Share Exchange Agreement) pursuant to which Overland’s cell therapy business merged into Allogene Overland (the Organizational Restructuring). Under a separate agreement between Overland and HH BioPharma Holdings Ltd. (HBP) executed on May 24, 2024, Overland distributed all Series Seed Preferred Shares of Allogene Overland held by Overland to HBP and HBP has assumed all rights and obligations attached to such shares and all rights and obligations of Overland under the Share Exchange Agreement. In connection with the Organizational Restructuring, on May 24, 2024, we and Allogene Overland PRC entered into a First Amendment to the License Agreement (the License Amendment) to amend and supplement certain provisions of the License Agreement. Under the License Amendment, we continued to grant Allogene Overland PRC an exclusive license to develop, manufacture, and commercialize the Overland Licensed Products in the JV Territory, with us retaining exclusive rights to the Overland Licensed Products outside the JV Territory, and the royalty obligations to us were amended to a flat mid single-digit royalty on net sales in the JV Territory that are no longer subject to reductions as previously provided. The License Amendment also provided us with additional rights to terminate the License Agreement in its entirety or with respect to the relevant Overland Licensed Product(s) if Allogene Overland PRC fails to initiate manufacturing technology transfer with respect to an Overland Licensed Product as agreed in the License Amendment, or if HBP commits a funding default or a material breach of its representations, warranties, or covenants under the Share Exchange Agreement. The License Amendment also provided that the License Agreement will terminate automatically if our ownership in Allogene Overland falls below 7.5% (other than due to our sale of the shares of Allogene Overland), unless at that time we and Allogene Overland PRC have mutually agreed on the manufacturing technology transfer plan for the Overland Licensed Product(s) and Allogene Overland PRC elects to continue the license for such Overland Licensed Product(s) with increased milestones and royalties. Under the 26 Table of Contents License Amendment terms such increased milestones and royalties consisted of up to $115 million in milestone payments for each Overland Licensed Product and tiered mid single-digit to low double-digit royalties on net sales in the JV Territory. As part of the Organizational Restructuring, Allogene Overland was renamed Overland Therapeutics Inc. (Overland Therapeutics). On May 12, 2026, we entered into a termination agreement with Overland Therapeutics (SH) Co. Ltd. and Overland Therapeutics Inc., pursuant to which the License Agreement was terminated in its entirety. The parties also provided mutual releases of claims, and no termination payments were made in connection with the termination. In connection with the termination and related transactions, we surrendered a portion of our equity interests in Overland Therapeutics, resulting in a reduction of our ownership interest to approximately 3% on an as-converted and fully diluted basis. Collaboration and License Agreement with Antion On January 5, 2022, we entered into an exclusive collaboration and global license agreement (Antion Collaboration and License Agreement) with Antion Biosciences SA (Antion) for Antion’s miRNA technology (miCAR), to advance multiplex gene silencing as an additional tool to develop next generation allogeneic CAR T products. On July 11, 2023, we entered into an amendment to the Antion Collaboration and License Agreement, which included a $2.0 million investment in Antion’s preferred shares and the acquisition of warrants to purchase an additional $3.0 million of Antion’s preferred shares. Strategic Collaboration Agreement with Foresight Diagnostics On January 3, 2024, we entered into a Strategic Collaboration Agreement (the Foresight Agreement) with Foresight Diagnostics, Inc. (Foresight Diagnostics). In December 2025, Foresight Diagnostics was acquired by Natera and continues to operate as a standalone subsidiary. Pursuant to the Foresight Agreement, the parties have agreed to collaborate on a non-exclusive basis in the development of Foresight Diagnostics’ CLARITY TM MRD assay as an in vitro diagnostic to identify the MRD+ patient population to be enrolled in our ALPHA3 trial of cema-cel for treatment of LBCL. Under the Foresight Agreement, we have agreed to use commercially reasonable efforts to obtain regulatory approval of cema-cel, and Foresight Diagnostics has agreed to use commercially reasonable efforts to obtain regulatory approval of an MRD assay for use as an in vitro diagnostic with cema-cel. On February 19, 2025, we entered into an Amended and Restated Strategic Collaboration Agreement with Foresight Diagnostics which expands our collaboration to include the development of Foresight Diagnostics’ MRD assay for use with cema-cel as part of a possible EU and/or UK clinical development program, and as part of an expansion of ALPHA3 to Canadian and Australian clinical trial sites in support of our U.S. clinical development program. We subsequently amended the agreement to add a workplan supporting clinical trial readiness activities for the expansion of ALPHA3 into South Korea. In total, we have agreed to fund approximately $37.3 million in MRD assay development costs, milestone payments for U.S., and certain international regulatory submissions and assay utilization costs to process clinical samples. Components of Results of Operations Revenues From inception to June 30, 2026, our revenue has been exclusively generated from the License Agreement with Overland Therapeutics. Refer to Note 6 to our consolidated financial statements appearing in our Annual Report for more information related to the License Agreement. In the future, we may generate revenue from a combination of product sales, marketing and distribution arrangements and other collaborations, strategic alliances and licensing arrangements or a combination of these approaches. We expect that any revenue we generate will fluctuate from quarter to quarter as a result of the timing and amount of license fees, milestones and other payments, and the amount and timing of payments that we receive upon the sale of our products, to the extent any are successfully commercialized. If we fail to complete the development of our product candidates in a timely manner or obtain regulatory approval of them, our ability to generate future revenue, and our results of operations and financial position, will be materially adversely affected. 27 Table of Contents Operating Expenses Research and Development To date, our research and development expenses have related primarily to discovery efforts, preclinical and clinical development, and manufacturing of our product candidates. Research and development expenses for the three and six months ended June 30, 2026 included costs associated with our clinical and preclinical stage pipeline candidates and research into newer technologies. The most significant research and development expenses for the year to date relate to costs incurred for the development of our most advanced product candidates and include: • expenses incurred under agreements with our collaboration partners and third-party contract organizations, investigative clinical trial sites that conduct research and development activities on our behalf, and consultants; • costs related to production of clinical materials, including fees paid for raw materials and to contract manufacturers; • laboratory and vendor expenses related to the execution of preclinical and clinical trials; • employee-related expenses, which include salaries, benefits and stock-based compensation; • facilities and other expenses, which include expenses for rent and maintenance of facilities, depreciation and amortization expense and supplies; and • other significant research and development costs including overhead costs. We expense all research and development costs in the periods in which they are incurred. We accrue for costs incurred as the services are being provided by monitoring the status of the project and the invoices received from our external service providers. We adjust our accrual as actual costs become known. Where contingent milestone payments are due to third parties under research and development arrangements or license agreements, the milestone payment obligations are expensed when the milestone results are achieved. Research and development activities are central to our business model. Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials. We expect our research and development expenses to increase in the future as our clinical programs progress and as we seek to initiate clinical trials of additional product candidates. The cost of advancing our manufacturing process as well as the cost of manufacturing product candidates for clinical trials are included in our research and development expense. We also expect to incur increased research and development expenses as we selectively identify and develop additional product candidates. However, it is difficult to determine with certainty the duration and completion costs of our current or future preclinical programs and clinical trials of our product candidates. The duration, costs and timing of clinical trials and development of our product candidates will depend on a variety of factors that include, but are not limited to, the following: • per patient trial costs; • biomarker analysis costs; • the cost and timing of manufacturing for the trials; • the number of patients that participate in the trials; • the number of sites included in the trials; • the number of patients we are required to screen with eligibility tests (e.g. MRD assays) in order to reach our enrollment targets; • the countries in which the trials are conducted; • the length of time required to enroll eligible patients; • the total number of cells that patients receive; • the drop-out or discontinuation rates of patients; • potential additional safety monitoring or other studies requested by regulatory agencies, including to resolve any future clinical hold; • the duration of patient follow-up; and • the efficacy and safety profile of the product candidates. 28 Table of Contents In addition, the probability of success for each product candidate will depend on numerous factors, including safety, efficacy, competition, manufacturing capability and commercial viability. We will determine which programs to pursue and how much to fund each program in response to the scientific and clinical success of each product candidate, as well as an assessment of each product candidate’s commercial potential. Because our product candidates are still in clinical and preclinical development and the outcome of these efforts is uncertain, we cannot estimate the actual amounts necessary to successfully complete the development and commercialization of product candidates or whether, or when, we may achieve profitability. General and Administrative General and administrative expenses consist primarily of salaries and other staff-related costs, including stock-based compensation for options and restricted stock units granted. Other significant costs include costs relating to facilities and overhead costs, legal fees relating to corporate and patent matters, insurance, investor relations costs, fees for accounting and consulting services, information technology, costs and support for our board of directors and board committees, and other general and administrative costs. General and administrative costs are expensed as incurred, and we accrue for services provided by third parties related to the above expenses by monitoring the status of services provided and receiving estimates from our service providers, and adjusting our accruals as actual costs become known. Other Income (Expenses), Net: Interest and Other Income, Net Interest and other income, net primarily consists of interest earned on our cash and cash equivalents and investments, investment gains and losses recognized and sublease income earned from our subtenants during the period. Interest Expense Interest expense related to the California Institute of Regenerative Medicine (CIRM) award is accrued upon cash receipt. Other Income (Expenses), net Other income (expenses), net, consist of non-operating income and expenses, including primarily our share of net losses for the period from, and impairment of, our equity investments. 29 Table of Contents Results of Operations Comparison of the Three Months Ended June 30, 2026 and 2025 The following sets forth our results of operations for the three months ended June 30, 2026 and 2025 (in thousands, except percentage amounts): Three Months Ended June 30, Change 2026 2025 $ % Collaboration revenue - related party $ 4,640 $ — $ 4,640 N/A Operating expenses: Research and development 30,721 40,156 (9,435) (23) % General and administrative 20,839 14,281 6,558 46 % Impairment of long-lived assets — 2,382 (2,382) (100) % Total operating expenses 51,560 56,819 (5,259) (9) % Loss from operations (46,920) (56,819) 9,899 (17) % Other income (expenses), net: Interest and other income, net 4,647 6,187 (1,540) (25) % Interest expense (343) (268) (75) 28 % Other income (expenses), net (61) (43) (18) 42 % Total other income (expenses), net 4,243 5,876 (1,633) (28) % Net loss $ (42,677) $ (50,943) $ 8,266 (16) % Research and Development Expenses The following table shows the primary components of our research and development expenses for the periods presented: Three Months Ended June 30, 2026 2025 Change Personnel $ 12,352 $ 17,621 $ (5,269) Development costs 8,837 11,019 (2,182) Facilities and depreciation 8,437 9,598 (1,161) Other 1,095 1,918 (823) Total research and development expenses $ 30,721 $ 40,156 $ (9,435) Our research and development expenses included $14.8 million of internal expenses and $15.9 million of external expenses for the three months ended June 30, 2026. Of the $15.9 million of external expenses for the three months ended June 30, 2026, $7.0 million was related to our cema-cel program. Our research and development expenses included $20.4 million of internal expenses and $19.7 million of external expenses for the three months ended June 30, 2025. Of the $19.7 million of external expenses for the three months ended June 30, 2025, $6.9 million was related to our cema-cel program. Research and development expenses were $30.7 million and $40.2 million for the three months ended June 30, 2026 and 2025, respectively. The decrease of $9.4 million was driven primarily by a decrease in development costs of $2.2 million related to the advancement of our product candidates due to the timing of development activities and manufacturing runs, personnel related costs of $5.3 million, including a decrease of $3.1 million in severance expense related to the Workforce Reduction, facilities and depreciation costs of $1.2 million, and other expenses primarily related to outside services. General and Administrative Expenses General and administrative expenses were $20.8 million and $14.3 million for the three months ended June 30, 2026 and 2025, respectively. The increase of $6.6 million was primarily due to an increase in personnel related costs of $5.8 million, attributable to leadership transition costs related to stock compensation expense of $6.1 million and severance costs of $1.6 30 Table of Contents million, partially offset by other personnel decrease of stock compensation expense of $1.9 million, and an increase in other expenses of $0.8 million primarily related to outside services. Impairment of Long-Lived Asset During the three months ended June 30, 2025, we recorded a long-lived asset impairment charge of $1.0 million related to subleasing one of our leased buildings in South San Francisco. In addition, during three months ended June 30, 2025, we recorded equipment impairment of $1.3 million in conjunction with the Workforce Reduction. Interest and Other Income, Net Interest and other income, net was $4.6 million and $6.2 million for the three months ended June 30, 2026 and 2025, respectively. The decrease of $1.5 million was due to lower net gain on foreign exchange translation, partially offset by higher interest income earned on our cash, cash equivalents and investments. Interest Expense Interest expense was related to the CIRM award proceeds received for the three months ended June 30, 2026 and 2025. Other Income (Expenses), Net For the three months ended June 30, 2026 and 2025, we recorded other expenses of $0.1 million and less than $0.1 million, respectively. Comparison of the Six Months Ended June 30, 2026 and 2025 The following sets forth our results of operations for the six months ended June 30, 2026 and 2025 (in thousands, except percentage amounts): Six Months Ended June 30, Change 2026 2025 $ % Collaboration revenue - related party $ 4,640 $ — $ 4,640 N/A Operating expenses: Research and development 62,724 90,356 (27,632) (31) % General and administrative 34,928 29,272 5,656 19 % Impairment of long-lived assets — 2,382 (2,382) (100) % Total operating expenses 97,652 122,010 (24,358) (20) % Loss from operations (93,012) (122,010) 28,998 (24) % Other income (expenses), net: Interest and other income, net 8,220 11,703 (3,483) (30) % Interest expense (643) (418) (225) 54 % Other income (expenses), net 151 49 102 208 % Total other income (expenses), net 7,728 11,334 (3,606) (32) % Net loss $ (85,284) $ (110,676) $ 25,392 (23) % Research and Development Expenses The following table shows the primary components of our research and development expenses for the periods presented: 31 Table of Contents Six Months Ended June 30, 2026 2025 Change Personnel $ 26,371 $ 39,179 $ (12,808) Development costs 17,776 28,025 (10,249) Facilities and depreciation 16,157 19,258 (3,101) Other 2,420 3,894 (1,474) Total research and development expenses $ 62,724 $ 90,356 $ (27,632) Our research and development expenses included $31.3 million of internal expenses and $31.5 million of external expenses for the six months ended June 30, 2026. Of the $31.5 million of external expenses for the six months ended June 30, 2026, $14.6 million was related to our cema-cel program. Our research and development expenses included $44.6 million of internal expenses and $45.8 million of external expenses for the six months ended June 30, 2025. Of the $45.8 million of external expenses for the six months ended June 30, 2025, $13.1 million was related to our cema-cel program. Research and development expenses were $62.7 million and $90.4 million for the six months ended June 30, 2026 and 2025, respectively. The decrease of $27.6 million was driven primarily by a decrease in development costs of $10.2 million related to the advancement of our product candidates due to the timing of development activities and manufacturing runs, a decrease in personnel related costs of $12.8 million, including decreases of $7.2 million in salaries and benefits, $3.1 million in severance expense related to the Workforce Reduction, and stock-based compensation expense of $2.5 million, facilities and depreciation costs of $3.1 million and other expenses of $1.5 million related to outside services. General and Administrative Expenses General and administrative expenses were $34.9 million and $29.3 million for the six months ended June 30, 2026 and 2025, respectively. The increase of $5.7 million was primarily due to an increase in personnel related costs of $4.0 million, attributable to leadership transition costs related to stock compensation expense of $6.1 million and severance costs $1.6 million, partially offset by other personnel decrease of stock compensation expense of $3.7 million, and an increase in other expenses of $1.7 million related to corporate communications, outside services and facilities. Impairment of Long-Lived Asset During the six months ended June 30, 2025, we recorded a long-lived asset impairment charge of $1.0 million related to subleasing one of our leased buildings in South San Francisco. In addition, during six months ended June 30, 2025, we recorded equipment impairment of $1.3 million in conjunction with the Workforce Reduction. Interest and Other Income, Net Interest and other income, net was $8.2 million and $11.7 million for the six months ended June 30, 2026 and 2025, respectively. The decrease of $3.5 million was due to lower net gain on foreign exchange translation and interest earned on our cash, cash equivalents and investments. Interest Expense Interest expense was related to the CIRM award proceeds received for the six months ended June 30, 2026 and 2025. Other Income (Expenses), Net For the six months ended June 30, 2026 and 2025, we recorded other income of $0.2 million and less than $0.1 million, respectively. Liquidity and Capital Resources To date, we have incurred significant net losses and negative cash flows from operations. As of June 30, 2026, we had $423.6 million in cash, cash equivalents and investments. We believe that the aggregate of our current cash, cash equivalents and investments available for operations will be sufficient to fund our operations for at least the next 12 months from the date this Quarterly Report is filed with the SEC. 32 Table of Contents Our operations have been financed primarily through equity financings and license arrangements. During the six months ended June 30, 2026, we sold an aggregate of 12,476,533 shares of common stock in ATM offerings resulting in net proceeds of $20.7 million. Although the sales agreement does not specify an aggregate dollar limit on sales, sales under the agreement may be made only pursuant to an effective registration statement and an applicable prospectus supplement. On June 22, 2026, we filed a prospectus supplement under our effective shelf registration statement relating to the offer and sale of shares of our common stock having an aggregate offering price of up to $135.0 million pursuant to the sales agreement. We did not sell any shares under the June 2026 prospectus supplement through June 30, 2026. As of June 30, 2026, shares of our common stock having an aggregate offering price of up to $135.0 million remained available for sale under the June 2026 prospectus supplement, subject to market conditions, the terms and conditions of the sales agreement and applicable law. In April 2026, we closed an underwritten public offering (April 2026 Public Offering) in which we sold 100,200,000 shares of our common stock at a public offering price of $2.00 per share, including 12,700,000 additional shares sold pursuant to the underwriters’ partial exercise of their option to purchase additional shares. We received aggregate net proceeds of approximately $187.9 million, after deducting underwriting discounts and commissions and estimated offering expenses payable by us. We expect to use the net proceeds from the April 2026 Public Offering for general corporate purposes, which may include clinical trial expenses, research and development expenses, general and administrative expenses, and capital expenditures. Cash Flows The following table summarizes our cash flows for the periods indicated: Six Months Ended June 30, 2026 2025 (In thousands) Net cash (used in) provided by: Operating activities $ (44,909) $ (91,959) Investing activities (177,147) 50,011 Financing activities 208,994 19,062 Net increase (decrease) in cash and cash equivalents and restricted cash $ (13,062) $ (22,886) Operating Activities During the six months ended June 30, 2026, cash used in operating activities of $44.9 million was attributable to a net loss of $85.3 million, partially offset by non-cash charges of $21.5 million and an increase of $18.8 million in our net operating assets and liabilities. The non-cash charges consisted primarily of stock-based compensation expense of $20.7 million, depreciation of $5.5 million and non-cash rent expense of $2.1 million, partially offset by non-cash collaboration revenue - related party of $4.6 million and net amortization and accretion on investment securities of $2.2 million. The change in operating assets and liabilities was primarily due to a decrease in deposit in escrow of $23.5 million, an increase in accounts payable of $1.7 million, an increase in other long-term liabilities of $0.7 million and a decrease in prepaid expense and other current assets of $0.1 million, partially offset by a decrease in operating lease liabilities of $4.2 million and a decrease in accrued and other current liabilities of $2.8 million. During the six months ended June 30, 2025, cash used in operating activities of $92.0 million was attributable to a net loss of $110.7 million and a decrease of $10.5 million in our net operating assets and liabilities, partially offset by non-cash charges of $29.2 million. The non-cash charges consisted primarily of stock-based compensation expense of $20.9 million, depreciation of $6.2 million, impairment of long-lived assets of $2.4 million and non-cash rent expense of $2.3 million, partially offset by net amortization and accretion on investment securities of $2.5 million. The change in operating assets and liabilities was primarily due to a decrease in operating lease liabilities of $3.8 million, a decrease in accrued and other current liabilities of $3.5 million, an increase in deposit in escrow of $2.7 million and an increase in other long-term assets of $1.5 million, partially offset by a decrease in prepaid expense and other current assets of $1.2 million. Investing Activities During the six months ended June 30, 2026, net cash used in investing activities of $177.1 million was related to cash used in the purchase of investments of $285.4 million, partially offset by cash provided by investment maturities of $108.4 million. 33 Table of Contents During the six months ended June 30, 2025, net cash provided by investing activities of $50.0 million was related to cash provided by investment maturities of $110.3 million, partially offset by cash used in the purchase of investments of $60.1 million. Financing Activities During the six months ended June 30, 2026, cash provided by financing activities of $209.0 million was related to cash net proceeds of $187.9 million from the issuance of common stock through our April 2026 registered offering, net proceeds from the issuance of common stock through ATM transactions of $20.7 million and the sale of common stock through our employee stock purchase plan of $0.5 million. During the six months ended June 30, 2025, cash provided by financing activities of $19.1 million was related to cash provided by net proceeds from the issuance of common stock through ATM transactions of $11.5 million, proceeds from the CIRM award of $6.9 million and the sale of common stock through our employee stock purchase plan of $0.6 million. Material Cash Commitments and Requirements Our primary use of cash is for operating expenses, which consist primarily of clinical manufacturing and research and development expenditures related to our lead product candidates, other research efforts, and to a lesser extent, general and administrative expenditures. Cash used to fund operating expenses is impacted by the timing of when we pay these expenses, as reflected in the change in our outstanding accounts payable and accrued expenses and other current liabilities. Our product candidates are still in the early stages of clinical and preclinical development and the outcome of these efforts is uncertain. Accordingly, we cannot estimate the actual amounts necessary to successfully complete the development and commercialization of our product candidates or whether, or when, we may achieve profitability. Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of equity or debt financings and collaboration and license arrangements. If, and when, we do raise additional capital through public or private equity offerings, the ownership interest of our existing stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect our stockholders’ rights. If we raise additional capital through debt financing, we may be subject to covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we are unable to raise capital when needed, we will need to delay, reduce or terminate planned activities to reduce costs. Doing so will likely harm our ability to execute our business plans. Our commitments primarily consist of obligations under our agreements with Pfizer, Cellectis, Servier and Foresight. Under these agreements we are required to make milestone payments upon successful completion of certain development, regulatory and/or sales milestones on a target-by-target and country-by-country basis. The payment obligations under the license agreements are contingent upon future events such as our achievement of specified development, regulatory and/or commercial milestones and we will be required to make development milestone payments and royalty payments in connection with the sale of products developed under these agreements. As of June 30, 2026, we were unable to estimate the timing or likelihood of achieving the milestones or making future product sales. For additional information regarding our agreements, see Note 6 to our consolidated financial statements included in our Annual Report. Our operating lease obligations primarily consist of lease payments on our research, lab and office facilities in South San Francisco, California, as well as lease payments on our cell manufacturing facility in Newark, Califor