ALLO US Equity☆

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion contains management’s discussion and analysis of our financial condition and results of operations and should be read together with the historical consolidated financial statements and the notes thereto included in “Financial Statements and Supplementary Data”. This discussion contains forward-looking statements that reflect our plans, estimates and beliefs and involve numerous risks and uncertainties, including but not limited to those described in the “Risk Factors” section of this Annual Report. Actual results may differ materially from those contained in any forward-looking statements. You should carefully read “Special Note Regarding Forward-Looking Statements” and “Risk Factors.”

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 disease. Earlier this year, however, we announced our 2024 Platform Vision under which we are now focusing on four core programs.

We are currently focused on developing cemacabtagene ansegedleucel (cema-cel, previously ALLO-501A) in large B-cell lymphoma (LBCL) and chronic lymphocytic leukemia (CLL). We plan to initiate a pivotal Phase 2 clinical trial (ALPHA3) in mid-2024 for cema-cel as part of a first line (1L) treatment plan for newly diagnosed and treated LBCL patients who are likely to relapse and need further therapy. The design of the ALPHA3 1L consolidation trial builds upon the results demonstrated in the Phase 1 ALPHA2 trial and leverages an investigational diagnostic test developed by Foresight Diagnostics, Inc. that we believe will identify patients who have achieved remission by standard disease assessment but who have minimal residual disease (MRD) at the completion of 1L chemoimmunotherapy. The ALPHA3 trial is designed to study the impact of treating MRD positive patients with cema-cel. The study will randomize approximately 230 patients who achieve a complete response or partial response to 1L therapy, but who are MRD positive. The patients will be randomized to either consolidation with cema-cel or the current standard of care, which is observation. The design, with a primary endpoint of event free survival (EFS), will initially include two lymphodepletion arms (one with standard fludarabine and cyclophosphamide plus ALLO-647 and one with standard fludarabine and cyclophosphamide but without ALLO-647). One lymphodepletion arm will be discontinued following a planned interim analysis in mid-2025 designed to select the most appropriate regimen for this patient population. In view of the potential of the earlier line ALPHA3 trial, we have deprioritized the third line (3L) LBCL ALPHA2 and EXPAND trials.

We have initiated the Phase 1b cohort of our ALPHA2 trial to evaluate cema-cel following lymphodepletion with fludarabine/cyclophosphamide and ALLO-647 in patients with relapsed/refractory chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL). This cohort will include up to 40 patients, and we expect to release initial data by year-end 2024.

We are enrolling a Phase 1 clinical trial (TRAVERSE) of ALLO-316, an allogeneic CAR T cell product candidate targeting CD70, in adult patients with advanced or metastatic RCC. We presented interim results from the TRAVERSE trial at the American Association of Cancer Research (AACR) Annual Meeting in April 2023. We have implemented a protocol

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amendment that incorporates a diagnostic and treatment algorithm into the study design. The algorithm is designed to mitigate the treatment-associated hyperinflammatory response without compromising the CAR T function needed to eradicate solid tumors. The next update from this trial is planned for a medical forum in the second quarter of 2024 and will discuss the algorithm. A more robust data update from the ongoing trial with the updated protocol is planned for later in 2024.

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. Initiation of this Phase 1 trial with ALLO-329 is expected in early 2025.

We are developing an anti-CD52 monoclonal antibody, ALLO-647, which is a proprietary component of our lymphodepletion regimen. ALLO-647 may be able to reduce the likelihood of a patient’s immune system rejecting the engineered allogeneic T cells for a sufficient period of time to enable a window of persistence during which our engineered allogeneic T cells can actively target and destroy cancer cells. During Part A of our pivotal ALPHA3 trial, we will be assessing ALLO-647’s contribution to the overall benefit to risk ratio of the lymphodepletion regimen for cema-cel. Patients will be randomized to receive cema-cel and a lymphodepletion regimen with fludarabine and cyclophosphamide either with or without ALLO-647. We plan to select the lymphodepletion regimen with which we will complete enrollment in the study (Part B) in the first half of 2025.

While we have additional programs in our pipeline, our development priorities are focused on cema-cel (1L Consolidation and CLL), ALLO-316, and ALLO-329. We will explore opportunities to partner with collaborators on product candidates across our pipeline.

On January 4, 2024, our board of directors approved a reduction in our workforce of approximately 22% of our employees in connection with our pipeline prioritization and clinical development strategy.

Since inception, we have had significant operating losses. Our net loss was $327.3 million for the year ended December 31, 2023. As of December 31, 2023, we had an accumulated deficit of $1.6 billion. As of December 31, 2023, we had $448.7 million in cash and cash equivalents and investments and we expect our cash runway to fund operations into 2026. 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 Research and Development and License Agreements

Asset Contribution Agreement with Pfizer

In April 2018, we entered into an Asset Contribution Agreement (Pfizer Agreement) with Pfizer pursuant to which we acquired certain assets and assumed certain liabilities from Pfizer, including agreements with Cellectis and Servier as described below, and other intellectual property for the development and administration of CAR T cells for the treatment of cancer. See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further description of the Pfizer Agreement.

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. See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further descriptions of the prior agreement with Cellectis and the new license agreement with Cellectis.

Exclusive License and Collaboration Agreement with Servier

In October 2015, Pfizer entered into an Exclusive License and Collaboration Agreement (Servier Agreement) with Servier 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.

On September 15, 2022, Servier sent a notice of discontinuation (Discontinuation) of its involvement in the development of all licensed products directed against CD19, including UCART19, ALLO-501 and cema-cel (collectively,

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CD19 Products), pursuant to the Servier Agreement. Servier’s Discontinuation provides us with the right to elect a license to the CD19 Products outside of the United States (Ex-US Option) and does not otherwise affect our current exclusive license for the development and commercialization of CD19 Products in the United States. Upon any exercise of the Ex-US Option by us, our potential milestone payments with respect to ALLO-501A would increase for any first dosing in Phase 2, first dosing in Phase 3 and regulatory approval by €46 million in the aggregate. In addition, upon any such exercise of the Ex-US Option, Servier's obligation to reimburse us for 40% of the development costs for CD19 Products would cease. However, Servier has disputed the implications of the Discontinuation, namely whether development cost contributions continue and the timeframe during which we have the right to elect a license to CD19 Products outside of the United States. Moreover, in December 2022, Servier sent us a notice for material breach due to our purported refusal to allow an audit of certain manufacturing costs under our cost share arrangement. While we do not believe Servier has such an audit right, we submitted to a review of our manufacturing costs of CD19 Products to recover outstanding manufacturing costs owed by Servier to us. In July 2023, Servier sent us a second notice for material breach alleging that we overcharged Servier based on Servier and its accounting firm’s review of costs eligible for cost-sharing under the Servier Agreement. We disagree with the material breach allegations and we are disputing such allegations. For more information, see “Risk Factors—Servier’s discontinuation of its involvement in the development of CD19 Products and Servier's disputes with us and Cellectis may have adverse consequences."

See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further description of the Servier Agreement.

Collaboration and License Agreement with Notch

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 has granted us an option to add certain specified targets to our exclusive license in exchange for an agreed upon per-target option fee.

The Notch Agreement includes a research collaboration to conduct research and pre-clinical development activities to generate engineered cells directed to our exclusive targets, which will be conducted in accordance with an agreed research plan and budget under the oversight of a joint development committee. In connection with the execution of the Notch Agreement, we made an upfront payment to Notch of $10.0 million. In addition, we made a $5.0 million investment in Notch’s series seed convertible preferred stock, resulting in us having a 25% ownership interest in Notch’s outstanding capital stock on a fully diluted basis immediately following the investment. In February 2021, we made an additional $15.9 million investment in Notch's Series A preferred stock. In October 2021, we made an additional $1.8 million investment in Notch's common stock. Immediately following this transaction, our share in Notch was 23.0% on a voting interest basis. See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further description of the Notch Agreement.

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, dated as of November 1, 2019. 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, we will be entitled to receive a percentage of upfront and/or milestone payments associated therewith up to a set cap, and will be entitled to a low, single-digit royalty on net sales of products containing a Released Target. In addition, with respect to our previous equity investments in Notch, the Amended Notch Agreement grants us certain anti-dilution protections up to certain limits for certain pre-IPO equity financings.

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. See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further description of the agreement with MD Anderson.

License Agreement with Allogene Overland Biopharm (CY) Limited

On December 14, 2020, we entered into a License Agreement with Allogene Overland Biopharm (CY) Limited (Allogene Overland), a joint venture established by us and Overland Pharmaceuticals (CY) Inc. (Overland), pursuant to a Share

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Purchase Agreement, dated December 14, 2020, 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). 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. See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further description of the License Agreement and Share Purchase Agreement with Allogene Overland.

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 million investment in Antion’s preferred shares and the acquisition of warrants to purchase an additional $3 million of Antion’s preferred shares. See Note 6 to our consolidated financial statements included elsewhere in this Annual Report for further description of the Antion Agreement and the July 2023 amendment.

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). Pursuant to the Foresight Agreement, the parties have agreed to collaborate on a non-exclusive basis in the development of Foresight Diagnostics' MRD assay as an in vitro diagnostic to identify the MRD+ patient population to be enrolled in our planned ALPHA3 trial of cemacabtagene ansegedleucel, or cema-cel (previously known as ALLO-501A) for treatment of large B cell lymphoma (LBCL). Under the Foresight Agreement, we have agreed to use the 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 an MRD assay for use as an in vitro diagnostic with cema-cel.

Components of Results of Operations

Revenues

As of December 31, 2023, our revenue has been exclusively generated from our collaboration and license agreement with Allogene Overland Biopharm (PRC) Co., Limited. See Notes 1 and 6 to our consolidated financial statements appearing elsewhere in this Annual Report for more information related to our recognition of revenue and the Allogene Overland 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.

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 year ended December 31, 2023 included costs associated with our clinical and preclinical stage pipeline candidates and research into newer technologies. The most significant research and development expenses 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;

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•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.

We have reimbursed Servier for 60% of the costs associated with the prior development of UCART19, including for the long-term follow-up of patients in the CALM and PALL clinical trials of UCART19. We believe Servier is required to reimburse us for 40% of the costs associated with the development of ALLO-501 and cema-cel.

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 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.

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.

We do not track most of our external research and development expenses by programs or product candidates because most of our external research and development expenses could be used for different programs or product candidates.

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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.

We expect our general and administrative expenses to increase over the next several years to support our continued research and development activities, manufacturing activities, potential commercialization of our product candidates and operating as a public company. These increases are anticipated to include increased costs related to the hiring of additional personnel, developing commercial infrastructure, fees to outside consultants, lawyers and accountants, and costs associated with being a public company such as expenses related to services associated with maintaining compliance with Nasdaq listing rules and SEC requirements, complying with and advancing environmental, social and governance matters, and insurance and investor relations costs.

Other Income (Expense), Net:

Interest and Other Income, Net

Interest and other income, net primarily consists of interest earned on our cash and cash equivalents and investments, as well as investment gains and losses recognized during the period.

Other Income (Expenses)

Other income (expenses) consists of non-operating income and expenses, including primarily our share of net losses for the period from, and impairment of, our equity method investments and impairment of our equity investment.

Results of Operations

Comparison of the Years Ended December 31, 2023, 2022 and 2021

The following sets forth our results of operations for the years ended December 31, 2023, 2022, and 2021 (in thousands):

Year Ended December 31, Change

(As Restated) (As Restated)

Operating expenses:

Other income (expense), net:

Collaboration revenue - related party

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Collaboration revenue was $0.1 million and $0.2 million for the years ended December 31, 2023 and 2022, respectively. Revenue recognized in the years ended December 31, 2023 and 2022 was mainly due to participation in the joint steering committee performance obligation related to the License Agreement entered into with Allogene Overland on December 14, 2020.

Collaboration revenue was $0.2 million and $114.1 million for the years ended December 31, 2022 and 2021, respectively. The decrease of $113.9 million was due to the revenue recognized related to the license of intellectual property and delivery of the know-how, which was delivered in the first quarter of 2021, under the License Agreement entered into with Allogene Overland in December 2020.

Research and Development Expenses

The following table shows the primary components of our research and development expenses for the periods presented:

Year Ended December 31, Change

Our research and development expenses included $119.0 million of internal expense and $123.9 million of external expenses for the year ended December 31, 2023. Our research and development expenses included $133.6 million of internal expenses and $122.8 million of external expenses for the year ended December 31, 2022.

Research and development expenses were $242.9 million and $256.4 million for the years ended December 31, 2023 and 2022, respectively. The net decrease of $13.5 million was primarily due to a decrease in personnel related costs of $17.1 million, of which $13.5 million was decreased stock-based compensation expense, offset by an increase in external costs related to the advancement of our product candidates of $3.4 million due to the timing of process development activities and manufacturing runs.

Research and development expenses were $256.4 million and $220.2 million for the years ended December 31, 2022 and 2021, respectively. The net increase of $36.2 million was primarily due to an increase in building rent and facilities costs of $14.2 million, an increase in personnel related costs of $16.7 million, of which $3.5 million was increased stock-based compensation expense, and an increase in external costs relating to the advancement of our product candidates of $2.3 million due to the timing of process development activities and manufacturing runs.

General and Administrative Expenses

General and administrative expenses were $71.7 million and $79.3 million for the years ended December 31, 2023 and 2022, respectively. The net decrease of $7.6 million was primarily due to a decrease in personnel related costs of $5.7 million, of which $4.1 million was decreased stock-based compensation expense, and a decrease in expenses related to corporate communications of $1.8 million.

General and administrative expenses were $79.3 million and $74.1 million for the years ended December 31, 2022 and 2021, respectively. The net increase of $5.2 million was primarily due to an increase in personnel related costs of $3.4 million, an increase in expenses related to corporate communications of $2.8 million, partially offset by a $1.5 million decrease in business and consulting fees.

Impairment of long-lived asset

In December 2023, we made a decision to sublease one of our leased buildings in South San Francisco. We vacated and ceased occupancy of this building in December 2023 and currently we are actively marketing the leased building for sublease. We determined that the change in how this property is being used could indicate impairment and recorded long-lived asset impairment loss based on the performed impairment analysis.

Interest and Other Income, Net

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Interest and other income, net was $18.3 million and $4.6 million for the years ended December 31, 2023 and 2022, respectively. The $13.7 million increase was primarily due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Interest and other income, net was $4.6 million and $1.7 million for the years ended December 31, 2022 and 2021, respectively. The $2.9 million increase was due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Other expenses

Other expenses were $17.8 million and $9.4 million for the years ended December 31, 2023 and 2022, respectively. The $8.4 million increase was primarily due to impairment loss of $7.0 million related to our equity method investment and equity investment recorded for the year ended December 31, 2023.

Other expenses were $9.4 million and $3.6 million for the years ended December 31, 2022 and 2021, respectively. The $5.9 million increase was primarily due to higher share of net losses in our equity method investments.

Quarterly Discussion and Analysis

The following discussion should be read in conjunction with our accompanying restated unaudited interim condensed consolidated financial statements disclosed in Part II. Item 8. Financial Statements and Supplementary Data, Note 15 "Selected Quarterly Financial Data (Unaudited)", of this Annual Report.

The following sets forth our results of operations for the three months ended March 31, 2023 and 2022 (in thousands):

Three Months Ended March 31, Change

(As Restated) (As Restated)

Collaboration revenue - related party $ 30 $ 39 $ (9) (23) %

Operating expenses:

Other income (expense), net:

Collaboration revenue - related party

Collaboration revenue recognized for the three months ended March 31, 2023 and 2022 was mainly due to participation in the joint steering committee performance obligation related to the License Agreement entered into with Allogene Overland on December 14, 2020.

Research and Development Expenses

The following table shows the primary components of our research and development expenses for the periods presented:

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Three Months Ended March 31,

Our research and development expenses included $35.2 million of internal expenses and $45.0 million of external expenses for the three months ended March 31, 2023. Our research and development expenses included $33.9 million of internal expenses and $26.2 million of external expenses for the three months ended March 31, 2022.

Research and development expenses were $80.2 million and $60.1 million for the three months ended March 31, 2023 and 2022, respectively. The increase of $20.1 million was driven primarily by an increase in external costs relating to the advancement of our product candidates due to the timing of development activities and manufacturing runs of $16.9 million and an increase in facilities costs and depreciation expense of $1.1 million.

General and Administrative Expense

General and administrative expenses were $18.9 million and $19.9 million for the three months ended March 31, 2023 and 2022, respectively. The decrease of $1.0 million was primarily due to an decrease in personnel related costs.

Interest and Other Income, Net

Interest and other income, net was $2.1 million and $0.5 million for the three months ended March 31, 2023 and 2022, respectively. The increase of $1.6 million was primarily due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Other income (expenses), Net

Other expenses were $2.9 million for the three months ended March 31, 2023 and other income was $0.9 million for the three months ended March 31, 2022. The increase in other expenses of $3.8 million was primarily due to higher share of net losses in our equity method investments.

The following sets forth our results of operations for the three and six months ended June 30, 2023 and 2022 (in thousands):

Three Months Ended June 30, Change Six Months Ended June 30, Change

(As Restated) (As Restated) (As Restated) (As Restated)

Collaboration revenue - related party $ 22 $ 64 $ (42) $ 52 $ 103 $ (51)

Operating expenses:

Other income (expense), net:

Collaboration revenue - related party

Collaboration revenue recognized for the three and six months ended June 30, 2023 and 2022 was mainly due to participation in the joint steering committee performance obligation related to the License Agreement entered into with Allogene Overland on December 14, 2020.

Research and Development Expenses

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The following table shows the primary components of our research and development expenses for the periods presented:

Three Months Ended June 30, Six Months Ended June 30,

Our research and development expenses included $31.1 million of internal expenses and $30.9 million of external expenses for the three months ended June 30, 2023. Our research and development expenses included $36.1 million of internal expenses and $21.1 million of external expenses for the three months ended June 30, 2022.

Research and development expenses were $62.0 million and $57.2 million for the three months ended June 30, 2023 and 2022, respectively. The increase of $4.9 million was driven primarily by a decrease in Servier cost recoveries of $11.0 million, offset by a decrease in personnel related costs of $5.4 million and a decrease in external costs relating to the advancement of our product candidates due to the timing of development activities and manufacturing runs of $0.9 million.

Our research and development expenses included $66.3 million of internal expenses and $75.9 million of external expenses for the six months ended June 30, 2023. Our research and development expenses included $70.1 million of internal expenses and $47.2 million of external expenses for the six months ended June 30, 2022.

Research and development expenses were $142.3 million and $117.3 million for the six months ended June 30, 2023 and 2022, respectively. The increase of $24.9 million was driven primarily by a decrease in Servier cost recoveries of $16.1 million and an increase in external costs relating to the advancement of our product candidates due to the timing of development activities and manufacturing runs of $11.0 million, offset by a decrease in personnel related costs of $4.3 million.

General and Administrative Expense

General and administrative expenses were $18.5 million and $19.5 million for the three months ended June 30, 2023 and 2022, respectively. The decrease of $1.0 million was primarily due to a decrease in personnel related costs of $0.4 million and a decrease in expenses related to corporate communications and outside services of $0.3 million.

General and administrative expenses were $37.4 million and $39.4 million for the six months ended June 30, 2023 and 2022, respectively. The decrease of $2.0 million was primarily due to a decrease in personnel related costs of $1.4 million and a decrease in expenses related to corporate communications and outside services of $0.6 million.

Interest and Other Income, Net

Interest and other income, net was $3.8 million and $0.3 million for the three months ended June 30, 2023 and 2022, respectively. The increase of $3.5 million was primarily due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Interest and other income, net was $5.8 million and $0.8 million for the six months ended June 30, 2023 and 2022, respectively. The increase of $5.0 million was primarily due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Other expenses

Other expenses were $2.5 million and $4.0 million for the three months ended June 30, 2023 and 2022, respectively. The decrease of $1.5 million was primarily due to lower share of net losses in our equity method investments.

Other expenses were $5.4 million and $3.1 million for the six months ended June 30, 2023 and 2022, respectively. The increase of $2.3 million was primarily due to higher share of net losses in our equity method investments.

The following sets forth our results of operations for the three and nine months ended September 30, 2023 and 2022 (in thousands):

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Three Months Ended September 30, Change Nine Months Ended September 30, Change

(As Restated) (As Restated) (As Restated) (As Restated)

Collaboration revenue - related party $ 22 $ 27 $ (5) $ 74 $ 130 $ (56)

Operating expenses:

Other income (expense), net:

Collaboration revenue - related party

Collaboration revenue recognized for the three and nine months ended September 30, 2023 and 2022 was mainly due to participation in the joint steering committee performance obligation related to the License Agreement entered into with Allogene Overland on December 14, 2020.

Research and Development Expenses

The following table shows the primary components of our research and development expenses for the periods presented:

Three Months Ended September 30, Nine Months Ended September 30,

Our research and development expenses included $28.1 million of internal expenses and $17.9 million of external expenses for the three months ended September 30, 2023. Our research and development expenses included $33.6 million of internal expenses and $30.0 million of external expenses for the three months ended September 30, 2022.

Research and development expenses were $46.0 million and $63.6 million for the three months ended September 30, 2023 and 2022, respectively. The decrease of $17.7 million was driven primarily by a decrease in external costs relating to the advancement of our product candidates due to the timing of development activities and manufacturing runs of $10.3 million and a decrease in personnel related costs of $6.6 million, of which $4.3 million was stock-based compensation expense.

Our research and development expenses included $94.5 million of internal expenses and $93.8 million of external expenses for the nine months ended September 30, 2023. Our research and development expenses included $103.8 million of internal expenses and $77.2 million of external expenses for the nine months ended September 30, 2022.

Research and development expenses were $188.3 million and $181.0 million for the nine months ended September 30, 2023 and 2022, respectively. The increase of $7.3 million was driven primarily by a decrease in Servier cost recoveries of $19.7 million and an increase in facilities costs of $1.3 million, offset by a decrease in personnel related costs of $10.8 million, of which $12.4 million was a decrease in stock-based compensation expense, and a decrease in external costs relating to the advancement of our product candidates due to the timing of development activities and manufacturing runs of $2.9 million.

General and Administrative Expense

General and administrative expenses were $17.0 million and $18.9 million for the three months ended September 30, 2023 and 2022, respectively. The decrease of $1.9 million was primarily due to a decrease in personnel related costs of $2.1 million, of which $1.5 million was stock-based compensation expense.

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General and administrative expenses were $54.4 million and $58.3 million for the nine months ended September 30, 2023 and 2022, respectively. The decrease of $3.9 million was primarily due to a decrease in personnel related costs of $3.6 million, of which $3.3 million was stock-based compensation expense.

Interest and Other Income, Net

Interest and other income, net was $6.2 million and $1.0 million for the three months ended September 30, 2023 and 2022, respectively. The increase of $5.2 million was primarily due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Interest and other income, net was $12.0 million and $1.8 million for the nine months ended September 30, 2023 and 2022, respectively. The increase of $10.2 million was primarily due to higher yields and a corresponding increase in the interest earned on our cash, cash equivalents and investments.

Other expenses

Other expenses were $5.5 million and $2.7 million for the three months ended September 30, 2023 and 2022, respectively. The increase of $2.8 million was primarily due to impairment loss related to our equity method investment recorded for the three months ended September 30, 2023.

Other expenses were $10.9 million and $5.8 million for the nine months ended September 30, 2023 and 2022, respectively. The increase of $5.1 million was primarily due to higher share of net losses and impairment of our equity method investments.

Liquidity and Capital Resources

To date, we have incurred significant net losses and negative cash flows from operations. As of December 31, 2023, we had $448.7 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 Annual Report on Form 10-K is filed with the SEC.

Our operations have been financed primarily by net proceeds from the sale and issuance of our convertible preferred stock, the issuance of convertible promissory notes, net proceeds from our IPO, our at-the-market (ATM) offerings, our June 2020 underwritten public offering, and upfront cash payment of $40.0 million received in December 2020 pursuant to our License Agreement with Allogene Overland. In November 2019, we entered into a sales agreement with Cowen and Company, LLC (Cowen), as amended on November 2, 2022 and November 2, 2023, under which we may from time to time issue and sell shares of our common stock through Cowen in ATM offerings. During the year ended December 31, 2023, we sold an aggregate of 20,894,565 shares of common stock in ATM offerings resulting in net proceeds of $91.1 million. The specified dollar limit on the amount of common stock that may be sold under the sales agreement was removed pursuant to the November 2, 2023 amendment to the sales agreement.

Capital Resources

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.

Cash Flows

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The following table summarizes our cash flows for the periods indicated:

Year Ended December 31,

(in thousands)

Net cash (used in) provided by:

Operating Activities

During the year ended December 31, 2023, cash used in operating activities of $237.7 million was attributable to a net loss of $327.3 million, substantially offset by non-cash charges of $104.8 million and a net change of $15.3 million in our net operating assets and liabilities. The non-cash charges consisted primarily of stock-based compensation of $66.0 million, depreciation and amortization of $14.2 million, share of losses from equity method investments of $10.7 million, impairment of long-lived assets of $13.2 million, impairment of equity investment and equity method investment of $7.0 million, net amortization and accretion on investment securities of $6.8 million, and non-cash rent expense of $0.6 million. The net change in operating assets and liabilities was primarily due to a $7.5 million decrease in accounts payable, a $6.8 million decrease in accrued and other current liabilities, a $1.5 million increase in other long-term assets, and a $0.6 million decrease in other long-term liabilities, offset by a $1.1 million decrease in prepaid expenses and other current assets.

During the year ended December 31, 2022, cash used in operating activities of $220.5 million was attributable to a net loss of $340.4 million, substantially offset by non-cash charges of $116.0 million and a net change of $3.9 million in our net operating assets and liabilities. The non-cash charges consisted primarily of stock-based compensation of $83.6 million, depreciation and amortization of $14.3 million, share of losses from equity method investments of $12.9 million, net amortization and accretion on investment securities of $2.9 million, and non-cash rent expense of $2.4 million. The net change in operating assets and liabilities was primarily due to a $4.9 million increase in accounts payable, a $2.5 million decrease in prepaid expense and other current assets, and a $1.7 million increase in accrued and other current liabilities, offset by an increase in other long-term assets of $3.3 million and a decrease in other long-term liabilities of $1.9 million.

During the year ended December 31, 2021, cash used in operating activities of $184.8 million was attributable to a net loss of $182.1 million, a net change of $31.9 million in our net operating assets and liabilities substantially offset by non-cash charges of $29.2 million. The non-cash charges consisted primarily of stock-based compensation of $80.8 million, non-cash collaboration revenue from related party of $75.7 million, depreciation and amortization of $10.5 million, net amortization and accretion on investment securities of $7.0 million, share of losses from equity method investments of 4.1 million, and non-cash rent expense of $2.6 million. The net change in operating assets and liabilities was primarily due to a $38.3 million decrease in deferred revenue within current liabilities, a $0.8 million decrease in accounts payable, and a $0.6 million increase in other long-term assets, offset by a $3.7 million increase in accrued and other current liabilities, a $3.2 million decrease in prepaid expenses and other current assets and a $0.9 million increase in other long-term liabilities.

Investing Activities

During the year ended December 31, 2023, net cash provided by investing activities of $163.3 million was related to cash inflows from maturities of investments of $597.8 million and cash provided by investment sales of $5.6 million, offset by the purchase of investments of $438.6 million and purchases of property and equipment of $1.5 million.

During the year ended December 31, 2022, net cash provided by investing activities of $106.2 million was related to cash inflows from maturities of investments of $359.5 million, offset by the purchase of investments of $248.1 million and purchases of property and equipment of $5.2 million.

During the year ended December 31, 2021, net cash used in investing activities of $163.7 million was related to cash inflows from maturities of investments of $728.4 million, offset by the purchase of investments of $525.6 million, purchases of property and equipment of $21.4 million, and purchase of stock in equity method investment of $17.7 million.

Financing Activities

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During the year ended December 31, 2023, net cash provided by financing activities of $95.7 million was related to $91.1 million in net proceeds from the issuance of common stock through ATM transactions, $2.5 million of cash provided by the sale of common stock through our employee stock purchase plan, and $2.1 million of cash provided by the issuance of common stock upon exercise of stock options.

During the year ended December 31, 2022, net cash provided by financing activities of $3.0 million was related to proceeds from the employee stock purchase plan of $2.5 million and proceeds from the issuance of common stock upon the exercise of stock options of $0.5 million.

During the year ended December 31, 2021, net cash provided by financing activities of $12.0 million was related to proceeds from the issuance of common stock upon the exercise of stock options of $8.3 million and proceeds from the employee stock purchase plan of $3.6 million.

Contractual Obligations and Commitments

Material Cash Commitments and Requirements

Our commitments primarily consist of obligations under our agreements with Pfizer, Cellectis, Servier and Notch. Under these agreements we are required to make milestone payments upon successful completion of certain regulatory and 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 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 December 31, 2023, 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 elsewhere in this 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, California. For additional information regarding our lease obligations, see Note 7 to our consolidated financial statements included elsewhere in this Annual Report.

Additionally, we have entered into agreements with third-party contract manufacturers for the manufacture and processing of certain of our product candidates for clinical testing purposes, and we have entered and will enter into other contracts in the normal course of business with contract research organizations for clinical trials and other vendors for other services and products for operating purposes. These agreements generally provide for termination or cancellation, other than for costs already incurred. As of December 31, 2023, we had non-cancellable purchase commitments of $2.1 million.

On October 6, 2020, we announced we entered into a strategic five-year collaboration agreement with MD Anderson for the preclinical and clinical investigation of allogeneic CAR T cell product candidates. We 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, we have committed up to $15.0 million of funding for the duration of the agreement. Payment of this funding is contingent on mutual agreement to study orders in order for any study to be included under the alliance. We made an upfront payment of $3.0 million to MD Anderson in the year ended December 31, 2020 and made an additional upfront payment of $3.0 million to MD Anderson in October 2023. We are obligated to make further payments to MD Anderson each year upon the anniversary of the agreement effective date through the duration of the agreement term. The agreement may be terminated by either party for material breach by the other party. Individual studies may be terminated for, among other things, material breach, health and safety concerns or where the institutional review board, the review board at the clinical site with oversight of the clinical study, requests termination of any study. Where any legal or regulatory authorization is finally withdrawn or terminated, the relevant study will also terminate automatically.

In July 2020, we 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 our manufacturing facility in Newark, California. The agreement has a term of 20 years and commenced in September 2022. We are 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 us will result in a termination payment due of approximately $4.3 million. In connection with the agreement, we maintain a letter of credit for the benefit of the service provider in the amount of $4.3 million.

We also have a Change in Control and Severance Plan that requires the funding of specific payments, if certain events occur, such as a change of control and the termination of employment without cause.

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Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with United States generally accepted accounting principles. The preparation of these consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, as well as the reported expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

We believe that the assumptions and estimates associated with accrued research and development expenditures, revenue recognition, research and development expenses, stock-based compensation and leases have the most significant impact on our consolidated financial statements. Therefore, we consider these to be our critical accounting policies and estimates.

Accrued Research and Development Costs

We accrue liabilities for estimated costs of research and development activities conducted by our collaboration partners and third-party service providers, which include the conduct of preclinical and clinical studies, and contract manufacturing activities. We recorded the estimated costs of research and development activities based upon the estimated amount of services provided but not yet invoiced, and includes these costs in the accrued and other current liabilities on the consolidated balance sheets and within research and development expense on the consolidated statements of operations and comprehensive loss.

We accrue for these costs based on factors such as estimates of the work completed in accordance with agreements established with our collaboration partners and third-party service providers. We make estimates in determining the accrued liabilities balance in each reporting period. As actual costs become known, we adjust its accrued liabilities. We have not experienced any material differences between accrued costs and actual costs incurred since our inception.

Revenue Recognition

Our revenue is generated through collaboration research and license agreements. The terms of these agreements may contain multiple deliverables which may include (i) grant of licenses, (ii) transfer of know-how, (iii) research and development activities, (iii) clinical manufacturing, and (iv) product supply. The payment terms of these agreements may include nonrefundable upfront fees, payments for research and development activities, payments based upon the achievement of certain milestones, royalty payments based on product sales derived from the collaboration, and payments for supplying product.

We analyze our collaboration arrangements to assess whether they are within the scope of ASC 808, Collaborative Arrangements (ASC 808) to determine whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities. This assessment is performed throughout the life of the arrangement based on changes in the responsibilities of all parties in the arrangement. For collaboration arrangements within the scope of ASC 808 that contain multiple elements, we first determine which elements of the collaboration are deemed to be within the scope of ASC 808 and those that are more reflective of a vendor-customer relationship and, therefore, within the scope of Topic 606, Revenue from Contracts with Customers (ASC 606). For elements of collaboration arrangements that are accounted for pursuant to ASC 808, an appropriate recognition method is determined and applied consistently, generally by analogy to Topic 606.

For elements of those arrangements that we determine should be accounted for under ASC 606, we assess which activities in our collaboration agreements are performance obligations that should be accounted for separately and determine the transaction price of the arrangement, which includes the assessment of the probability of achievement of future milestones and other potential consideration. A performance obligation represents a promise in a contract to transfer a distinct good or service to a customer, which represents a unit of accounting in accordance with ASC 606. A performance obligation is considered distinct from other obligations in a contract when it provides a benefit to the customer either on its own or together with other resources that are readily available to the customer and is separately identified in the contract. We consider a performance obligation satisfied once we have transferred control of a good or service to the customer, meaning the customer has the ability to use and obtain the benefit of the good or service. A portion of the consideration should be allocated to each distinct performance obligation. The total consideration which we expect to collect in exchange for our products is an estimate and may be fixed or variable. We constrain the estimated variable consideration when we assess it is probable that a significant reversal

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in the amount of cumulative revenue recognized may occur in future periods. The transaction price is re-evaluated, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as uncertain events are resolved or other changes in circumstances occur. The allocation of the transaction price is performed based on standalone selling prices, which are based on estimated amounts that we would charge for a performance obligation if it were sold separately. Revenue is recognized when, or as, performance obligations in the contracts are satisfied, in the amount reflecting the expected consideration to be received from the goods or services transferred to the customers. Funds received in advance are recorded as deferred revenue and are recognized as the related performance obligation is satisfied.

Research and Development Expenses

We expense research and development costs as incurred. Acquired intangible assets are expensed as research and development costs if, at the time of payment, the technology is under development; is not approved by the FDA or other regulatory agencies for marketing; has not reached technical feasibility; or otherwise has no foreseeable alternative future use.

Research and development expenses also include costs incurred for internal and sponsored and collaborative research and development activities. Research and development costs consist of salaries and benefits, including associated stock-based compensation, and laboratory supplies and facility costs, as well as fees paid to other entities that conduct certain research and development activities on our behalf. Costs associated with co-development activities performed under the various license and collaboration agreements, including milestones achieved, are included in research and development expenses.

Stock-Based Compensation

We recognize compensation costs related to stock-based awards granted to employees and directors, including stock options, based on the estimated fair value of the awards on the date of grant. We estimate the grant date fair value, and the resulting stock-based compensation, using the Black-Scholes option-pricing model, the lattice option pricing model or Monte Carlo simulation, whichever provides us the more precise grant fair value. The grant date fair value of the stock-based awards is generally recognized on a straight-line basis over the requisite service period, which is generally the vesting period of the respective awards.

The Black-Scholes option-pricing model and the lattice option pricing model require the use of subjective assumptions to determine the fair value of stock-based awards. These assumptions include:

‐ Expected term— The expected term represents the period that stock-based awards are expected to be outstanding. The expected term for option grants is determined usingthe simplified method. The simplified method deems the term to be the average of the time-to-vesting and the contractual life of the stock-based awards.

‐ Expected volatility—We use an average historical stock price volatility of comparable public companies within the biotechnology and pharmaceutical industry that were deemed to be representative of future stock price trends, in addition to some consideration to our own stock price volatility. We continue to utilize comparable public companies as part of this process as we do not have sufficient trading history for our common stock. We will continue to apply this process until a sufficient amount of historical information regarding the volatility of our own stock price becomes available.

‐ Risk-free interest rate—The risk-free interest rate is based on the U.S. Treasury zero coupon issues in effect at the time of grant for periods corresponding with the expected term of option.

‐ Expected dividend—We have never paid dividends on our common stock and have no plans to pay dividends on our common stock. Therefore, we used an expected dividend yield of zero.

‐ Expected exercise barrier—The modified options in accordance with the Stock Option Exchange Program are assumed to be exercised upon vesting and when the ratio of stock market price to exercise price reaches 2.57, or expiration, whichever is earlier. For additional information regarding our Stock Option Exchange Program, see Note 10 to our consolidated financial statements included elsewhere in this Annual Report.

For the years ended December 31, 2023, 2022 and 2021, stock-based compensation was $66.0 million, $83.6 million and $80.8 million, respectively. As of December 31, 2023 and 2022, we had $108.7 million and $153.6 million, respectively, of total unrecognized stock-based compensation.

Leases

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We early adopted Accounting Standards Update (ASU) No. 2016-02, Leases as of January 1, 2018. For our long-term operating leases, we recognized right-of-use assets and lease liabilities on our consolidated balance sheet. The lease liabilities are determined as the present value of future lease payments using an estimated rate of interest that we would have to pay to borrow equivalent funds on a collateralized basis at the lease commencement date. The right-of-use assets are based on the liability adjusted for any prepaid or deferred rent. For each lease, the lease term at the commencement date is determined by considering whether renewal options and termination options are reasonably assured of exercise.

Rent expense for the operating lease is recognized on a straight-line basis over the lease term and is included in operating expenses on the consolidated statements of operations and comprehensive loss. Variable lease payments include lease operating expenses.

We elected to exclude from our consolidated balance sheets recognition of leases having a term of 12 months or less (short-term leases) and elected to not separate lease components and non-lease components for our long-term real estate leases.

Our long-lived assets, including right-of-use assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability is measured by comparison of the carrying amount of an asset group to the future net undiscounted cash flows that the assets are expected to generate. The long-lived assets recoverability test is performed at the asset group level, i.e., the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. If this test indicates that the carrying amount of the asset group is not recoverable, an impairment loss is measured as the amount by which the carrying amount of an asset group exceeds its fair value. Any impairment loss is allocated to the long-lived assets of the group on a pro rata basis using the relative carrying amounts of those assets, except that the carrying amount of an individual asset shall not be reduced below its fair value.

Recent Accounting Pronouncements

Please refer to Note 2 to our consolidated financial statements for a discussion of new accounting standards and updates that may impact us.

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

Interest Rate Risk

Our cash, cash equivalents and investments of $448.7 million as of December 31, 2023, consist of bank deposits, money market funds and available-for-sale securities. Such interest-earning instruments carry a degree of interest rate risk; however, historical fluctuations in interest income have not been significant for us. A 10% change in the interest rates in effect on December 31, 2023 would not have had a material effect on the fair market value of our cash equivalents and available-for-sale securities.

Foreign Currency Exchange Rate Risk

Our collaboration agreement with Servier requires collaboration payments for shared clinical development costs to be paid in euros, and thus we face foreign exchange risk as a result of entering into transactions denominated in currencies other than U.S. dollars. Due to the uncertain timing of expected payments in foreign currencies, we do not utilize any forward exchange contracts. All foreign transactions settle on the applicable spot exchange basis at the time such payments are made. An adverse movement in foreign exchange rates could have an effect on payments due and made to our collaboration partner as well as other foreign suppliers and for license agreements. A 10% change in the applicable foreign exchange rates during the periods presented would not have had a material effect on our consolidated financial statements. As of December 31, 2023, we had no receivables and $0.6 million of current liabilities denominated in foreign currency.

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Item 8. Financial Statements and Supplementary Data.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

For the years ended December 31, 2023 and 2022

Report of Independent Registered Public Accounting Firm (PCAOB ID: 42) 101

Consolidated Financial Statements:

Consolidated Balance Sheets 102

Consolidated Statements of Operations and Comprehensive Loss 103

Consolidated Statements of Stockholders’ Equity 104

Consolidated Statements of Cash Flows 105

Notes to Consolidated Financial Statements 106

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Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Allogene Therapeutics, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Allogene Therapeutics, Inc. (the Company) as of December 31, 2023 and 2022, the related consolidated statements of operations and comprehensive loss, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2023 and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023, in conformity with U.S. generally accepted accounting principles.

Restatement of Financial Statements

As discussed in Note 1 to the consolidated financial statements, the 2022 and 2021 consolidated financial statements have been restated to correct misstatements.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

Critical audit matters are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. We determined that there are no critical audit matters.

/s/ Ernst & Young LLP

We have served as the Company's auditor since 2018.

San Mateo, California

March 14, 2024

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ALLOGENE THERAPEUTICS, INC.

Consolidated Balance Sheets

(In thousands, except share and per share amounts)

(As Restated)

Assets

Current assets:

Prepaid expenses and other current assets 10,418 11,504

Long-term investments — 59,151

Liabilities and stockholders’ equity

Current liabilities:

Accrued and other current liabilities 31,096 39,743

Deferred revenue 86 95

Commitments and Contingencies (Notes 6 and 7)

Stockholders’ equity:

Accumulated other comprehensive loss (955) (9,926)

Total liabilities and stockholders’ equity $ 642,837 $ 821,579

The accompanying notes are an integral part of these consolidated financial statements.

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ALLOGENE THERAPEUTICS, INC.

Consolidated Statements of Operations and Comprehensive Loss

(In thousands, except share and per share amounts)

Year Ended December 31,

(As restated) (As restated)

Collaboration revenue - related party $ 95 $ 156 $ 114,089

Operating expenses:

Impairment of long-lived asset 13,245 — —

Other income (expense), net:

Other comprehensive income:

Net loss per share, basic and diluted $ (2.09) $ (2.38) $ (1.34)

The accompanying notes are an integral part of these consolidated financial statements.

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ALLOGENE THERAPEUTICS, INC.

Consolidated Statements of Stockholders’ Equity

(In thousands, except share and per share data)

Shares Amount

Vesting of early exercised common stock — — 3,848 — — 3,848

Net unrealized loss on available-for-sale investments — — — — (2,835) (2,835)

Vesting of early exercised common stock — — 2,905 — — 2,905

Net unrealized loss on available-for-sale investments — — — — (7,359) (7,359)

Vesting of early exercised common stock — — 1,999 — — 1,999

Net unrealized gain on available-for-sale investments — — — — 8,971 8,971

The accompanying notes are an integral part of these consolidated financial statements.

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ALLOGENE THERAPEUTICS, INC.

Consolidated Statements of Cash Flows

(in thousands)

Year Ended December 31,

(As Restated) (As Restated)

Cash flows from operating activities:

Adjustments to reconcile net loss to net cash used in operating activities:

Net amortization/accretion on investment securities (6,809) 2,891 6,955

Impairment of long-lived asset 13,245 — —

Impairment of equity investment and equity method investment 7,000 — —

Non-cash collaboration revenue - related party (63) (104) (75,740)

Changes in operating assets and liabilities:

Cash flows from investing activities:

Purchase of stock in equity method investment — — (17,710)

Proceeds from sales of investments 5,623 — —

Cash flows from financing activities:

Non-cash operating, investing and financing activities:

Supplemental disclosure:

The accompanying notes are an integral part of these consolidated financial statements.

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ALLOGENE THERAPEUTICS, INC.

Notes to Consolidated Financial Statements

Note 1. Description of Business and Summary of Significant Accounting Policies

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. The Company is developing a pipeline of off-the-shelf T cell product candidates that are designed to target and kill cancer cells.

Public Offerings

In November 2019, the Company entered into a sales agreement with Cowen and Company, LLC (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 Cowen in at-the-market (ATM) offerings. The aggregate compensation payable to Cowen as the Company's sales agent equals up to 3.0% of the gross sales price of the shares sold through Cowen pursuant to the sales agreement. During the year ended December 31, 2020, the Company sold an aggregate of 848,663 shares of common stock in ATM offerings resulting in net proceeds of $26.2 million. During the year ended December 31, 2023, the Company sold an aggregate of 20,894,565 shares of common stock in ATM offerings resulting in net proceeds of $91.1 million. The specified dollar limit on the amount of common stock that may be sold under the sales agreement was removed pursuant to the November 2, 2023 amendment to the sales agreement.

In June 2020, the Company sold 13,457,447 shares of its common stock, which included 1,755,319 shares sold pursuant to the full exercise of the underwriters' option to purchase additional shares, in an underwritten public offering at a price of $47.00 per share, which resulted in gross proceeds of approximately $632.5 million. Net proceeds to the Company after deducting the underwriting discounts and commissions and other expenses were approximately $595.7 million.

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 $448.7 million as of December 31, 2023. Since inception through December 31, 2023, the Company has incurred cumulative net losses of $1,562.2 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 intends to raise additional capital through the issuance of equity securities, debt financings or other sources in order to further implement its business plan. However, if such financing is not available at adequate levels, the Company will need to reevaluate its operating plan and may be required to delay the development of its product candidates. The Company expects that its cash and cash equivalents and investments will be sufficient to fund its operations for at least the next 12 months from the date the Company’s Annual Report on Form 10-K is filed with the Securities and Exchange Commission (SEC).

Basis of Presentation

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP).

In June 2020, the Company formed a wholly-owned, Netherlands-based subsidiary, Allogene Therapeutics, B.V., to help prepare for and assist with the Company's activities in Europe. The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. All material intercompany balances and transactions have been eliminated during consolidation.

Restatement of financial statements

As described further in Note 6 and Note 8, on December 14, 2020, the Company entered into an Exclusive License Agreement (License Agreement) with Allogene Overland Biopharm (CY) Limited (Allogene Overland), a joint venture established by the Company and Overland Pharmaceuticals (CY) Inc. (Overland) pursuant to a Share Purchase Agreement

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(Share Purchase Agreement), dated December 14, 2020, for the purpose of developing, manufacturing and commercializing certain allogeneic CAR T cell therapies for patients in greater China, Taiwan, South Korea and Singapore, which resulted in the Company acquiring shares of Allogene Overland’s Seed Preferred Stock (Seed Preferred Shares) representing a 49% ownership interest in exchange for entering into a License Agreement.

In 2023, the Company re-evaluated its application of ASC Topic 606, Revenue from Contracts with Customers (ASC 606) and ASC Topic 323, Investments - Equity Method and Joint ventures (ASC 323) to its License Agreement and Share Purchase Agreement with Allogene Overland. Upon reassessment, the Company has determined the 49% of Allogene Overland's outstanding Seed Preferred Shares received as a partial consideration for the License Agreement should be initially measured at fair value of $79.0 million rather than the zero carryover basis originally attributed to the Seed Preferred Shares. The initial transaction price to determine revenue related to the License Agreement was revised to include the fair value of the Seed Preferred Shares of $79.0 million and was allocated to the identified performance obligations based on their estimated standalone selling price. Additional revisions were made in the year ended December 31, 2020 whereby, on the date when the Seed Preferred Shares were received, the Company recorded as "Other expenses" in its consolidated statements of operations and comprehensive loss the basis difference of $67.5 million between the fair value of the Seed Preferred Shares of $79.0 million and the amount of the Company's underlying equity in net assets of Allogene Overland of $11.5 million and reduced the carrying value of the Seed Preferred Shares to $11.5 million. In the year ended December 31, 2021, the collaboration revenue increased by $75.6 million and the remaining transaction price of $3.4 million will impact subsequent future periods when related performance obligations are satisfied. Further, the Company recorded its share of net losses of Allogene Overland in each reporting period and reduced the carrying value of the Seed Preferred Shares. Refer to the Impact of restatement section below which describes detailed impact of the restatement for all the periods presented.

The error resulted in an understatement of collaboration revenue and other expenses in the consolidated statements of operations and comprehensive loss for the years ended December 31, 2022, 2021 and 2020, and an understatement of deferred revenue and equity method investment in the consolidated balance sheets as of December 31, 2022 and 2021. These annual periods were restated in the Amendment No. 1 to the Annual Report on Form 10-K/A for the year ended December 31, 2022 filed with the Securities and Exchange Commission (the SEC) on March 14, 2024.

The consolidated financial statements (as restated) also include adjustments to correct certain other previously identified misstatements relating to prior periods that the Company had determined to be immaterial, both individually and in aggregate, with a decrease in other expenses of $0.7 million for the year ended December 31, 2021 and an increase in other expenses of $2.0 million for the year ended December 31, 2022 in the consolidated statements of operations and comprehensive loss.

Impact of restatement

See below for reconciliation from the previously reported to the restated amounts in the consolidated statements of operations and comprehensive loss for the years ended December 31, 2022 and 2021, and in the consolidated balance sheets as of December 31, 2022. The previously reported amounts were derived from the Company's Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on February 28, 2023 (Original Report). These amounts are labeled as "As Previously Reported" in the tables below. The amounts labeled "Restatement Adjustment" represent the effects of this restatement described above.

The following presents a reconciliation of the impacted financial statement line items as previously reported to the restated amounts as of December 31, 2022, and for the years ended December 31, 2022 and 2021 (in thousands, except share and per share data):

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Operating expenses:

Other income (expense), net:

Other comprehensive income:

Net loss per share, basic and diluted (2.32) (2.38) (1.89) (1.34)

Changes in operating assets and liabilities:

The remainder of the notes to the Company's consolidated financial statements have been updated and restated, as applicable, to reflect the impacts from the restatement discussed above.

Included in Note 15 of these consolidated financial statements is the impact of restatement on previously issued (i) unaudited condensed balance sheets as of March 31, 2023 and 2022, June 30, 2023 and 2022 and September 30, 2023 and 2022, (ii) unaudited condensed statements of operations and comprehensive loss for the three months ended March 31, 2023 and 2022, three and six months ended June 30, 2023 and 2022, and three and nine months ended September 30, 2023 and 2022, (iii) unaudited condensed statements of cash flows for the three months ended March 31, 2023 and 2022, six months ended June 30, 2023 and 2022 and nine months ended September 30, 2023 and 2022, in each of the Quarterly Reports on Form 10-Q for the quarterly periods ended March 31, 2023, June 30, 2023 and September 30, 2023.

Use of Estimates

The preparation of consolidated 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 consolidated financial statements and the reported amounts of expenses during the reporting period. Significant estimates and assumptions made in the accompanying consolidated financial statements include but are not

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limited to the fair value of common stock, the fair value of stock options, the fair value of investments, income tax uncertainties, 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.

Concentration of Credit and other Risks and Uncertainties

Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of cash and cash equivalents and investments. The primary objectives for the Company’s investment portfolio are the preservation of capital and the maintenance of liquidity. The Company does not enter into any investment transaction for trading or speculative purposes.

The Company’s investment policy limits investments to certain types of instruments such as certificates of deposit, commercial paper, money market instruments, obligations issued by the U.S. government and U.S. government agencies as well as corporate debt securities, and places restrictions on maturities and concentration by type and issuer. The Company maintains cash balances in excess of amounts insured by the FDIC and concentrated within a limited number of financial institutions. The accounts are monitored by management and management believes that the financial institutions are financially sound, and, accordingly, minimal credit risk exists with respect to these financial institutions. As of December 31, 2023 and 2022, the Company has not experienced any significant credit losses in such accounts or investments.

The Company is subject to a number of risks common for early-stage biopharmaceutical companies including, but not limited to, the ability to achieve any clinical or commercial success of its product candidates, ability to obtain regulatory approval of its product candidates, the need for substantial additional financing to achieve its goals, uncertainty of broad adoption of its approved products, if any, by physicians and patients, significant competition, dependency on the Company's contract manufacturing organization, and ability to manufacture.

Segments

Operating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by the Chief Operating Decision Maker (CODM) in deciding how to allocate resources to an individual segment and in assessing performance. The Company’s CODM is its Chief Executive Officer. The Company has determined it operates in a single operating segment and has one reportable segment.

Cash, Cash Equivalents and Restricted Cash

The Company considers all highly liquid investments purchased with original maturities of three months or less from the purchase date to be cash equivalents. Cash equivalents consist primarily of amounts invested in bank money market accounts and money market mutual funds.

The Company has issued letters of credit under separate lease and other agreements which have been collateralized by restricted cash. This cash is classified as long-term restricted cash on the accompanying consolidated balance sheets based on the terms of the underlying agreements.

Investments

Investments are available-for-sale and are carried at estimated fair value. The Company’s valuations of marketable securities are generally derived from independent pricing services based upon quoted prices in active markets for similar securities, with prices adjusted for yield and number of days to maturity, or based on industry models using data inputs, such as interest rates and prices that can be directly observed or corroborated in active markets. Management determines the appropriate classification of its investments in debt securities at the time of purchase and at the end of each reporting period. Investments with original maturities of less than three months at the date of purchase are classified as cash and cash equivalents. Investments with original maturities beyond three months at the date of purchase and which mature at, or less than twelve months from the consolidated balance sheet date are classified as current.

Unrealized gains and losses are excluded from earnings and are reported as a component of other comprehensive income. The Company periodically evaluates whether declines in fair values of its available-for-sale securities below their book value are other-than-temporary. This evaluation consists of several qualitative and quantitative factors regarding the severity and duration of the unrealized loss as well as the Company’s ability and intent to hold the available-for-sale security until a forecasted recovery occurs. Additionally, the Company assesses whether it has plans to sell the security or it is more likely than

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not it will be required to sell any available-for-sale securities before recovery of its amortized cost basis. Realized gains and losses and declines in fair value judged to be other than temporary, if any, on available-for-sale securities are included in interest and other income, net. The cost of investments sold is based on the specific-identification method. Interest income on investments is included in interest and other income, net.

Fair Value Measurement

Assets and liabilities recorded at fair value on a recurring basis in the consolidated balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair values. Fair value is defined as the exchange price that would be received for an asset or an exit price that would be paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The authoritative guidance on fair value measurements establishes a three-tier fair value hierarchy for disclosure of fair value measurements as follows:

Level 1—Observable inputs such as unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date.

Level 2—Inputs (other than quoted prices included in Level 1) are either directly or indirectly observable for the asset or liability. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active.

Level 3— Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Property and Equipment, Net

Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed on a straight-line basis over the estimated useful lives of the related assets, generally three to seven years. Maintenance and repairs are charged to operations as incurred. Upon sale or retirement of assets, the cost and related accumulated depreciation are removed from the consolidated balance sheet and the resulting gain or loss is reflected in other expense.

The Company has determined the estimated life of assets to be as follows:

Laboratory equipment 5 years

Computer equipment and purchased software 3 - 5 years

Fixtures and furniture 7 years

Leasehold improvements Shorter of lease term or useful life

The Company adopted Accounting Standards Update ("ASU") No. 2018-15, Intangibles – Goodwill and other – Internal-Use Software (Subtopic 350-40) on January 1, 2020 on a prospective basis. The Company capitalizes implementation costs associated with internal use cloud computing arrangements in alignment with ASC 350-40 internal-use software. Costs incurred in preliminary project stage and post implementation stage are expensed as incurred. Costs incurred during the application development stage of implementation are capitalized in other long-term assets on the consolidated balance sheet. Capitalized implementation costs from cloud computing arrangements are amortized over the term of the cloud-based service arrangement.

Leases

The Company early adopted ASU No. 2016-2, Leases on January 1, 2018. For its long-term operating leases, the Company recognizes a right-of-use asset and a lease liability on its consolidated balance sheets. The lease liability is determined as the present value of future lease payments using an estimated rate of interest that the Company would pay to borrow equivalent funds on a collateralized basis at the lease commencement date. The right-of-use asset is based on the liability adjusted for any prepaid or deferred rent. The lease term at the commencement date is determined by considering whether renewal options and termination options are reasonably assured of exercise.

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Rent expense for the operating lease is recognized on a straight-line basis over the lease term and is included in operating expenses on the consolidated statements of operations and comprehensive loss. Variable lease payments include lease operating expenses.

The Company elected to exclude from its consolidated balance sheets recognition of leases having a term of 12 months or less (short-term leases) and elected to not separate lease components and non-lease components for its long-term real-estate leases.

Equity Method Investments

The Company uses the equity method of accounting for equity investments in companies if the investment provides the ability to exercise significant influence, but not control, over operating and financial policies of the investee. The Company's proportionate share of the net income or loss of these companies is included in other expenses in the consolidated statement of operations. Judgment regarding the level of influence over each equity method investment includes considering key factors such as our ownership interest, representation on the board of directors, participation in policy-making decisions and material purchase and sale transactions.

The Company evaluates equity method investments for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment might not be recoverable. Factors considered when reviewing an equity method investment for impairment include the length of time (duration) and the extent (severity) to which the fair value of the equity method investment has been less than cost, the investee’s financial condition and near-term prospects and the intent and ability to hold the investment for a period of time sufficient to allow for anticipated recovery. An impairment that is other-than-temporary is recognized in the period identified.

Variable Interest Entities

For entities in which the Company has variable interests, the Company focuses on identifying if one of the entities is the primary beneficiary through having the power to direct the activities that most significantly impact the variable interest entity’s economic performance and having the obligation to absorb losses or the right to receive benefits from the variable interest entity. If the Company is the primary beneficiary of a variable interest entity, the assets, liabilities, and results of operations of the variable interest entity will be included in the Company’s consolidated financial statements. The Company did not consolidate any variable interest entities in any of the periods presented because the Company determined that it was not the primary beneficiary.

Accrued Research and Development Costs

The Company records accrued liabilities for estimated costs of research and development activities conducted by collaboration partners and third-party service providers, which include the conduct of preclinical studies and clinical trials, and contract manufacturing activities. The Company records the estimated costs of research and development activities based upon the estimated amount of services provided but not yet invoiced and includes these costs in accrued and other current liabilities on the consolidated balance sheets and within research and development expenses on the consolidated statements of operations and comprehensive loss.

The Company accrues for these costs based on factors such as estimates of the work completed and in accordance with agreements established with its collaboration partners and third-party service providers. The Company makes significant judgments and estimates in determining the accrued liabilities balance at the end of each reporting period. As actual costs become known, the Company adjusts its accrued liabilities. The Company has not experienced any material differences between accrued costs and actual costs incurred since its inception.

Income Taxes

Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to affect taxable income. Management makes an assessment of the likelihood that the resulting deferred tax assets will be realized. A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized. Due to the Company’s historical operating performance and net losses, the net deferred tax assets have been fully offset by a valuation allowance.

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The Company recognizes uncertain income tax positions at the largest amount that is more likely than not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained. Changes in recognition or measurement are reflected in the period in which judgment occurs. The Company’s policy is to recognize interest and penalties related to the underpayment of income taxes as a component of the provision for income taxes.

Stock-Based Compensation

The Company measures its stock-based awards granted to employees, consultants and directors based on the estimated fair values of the awards and recognizes the compensation over the requisite service period. The Company uses the Black-Scholes option-pricing model, the lattice option pricing model or Monte Carlo simulation to estimate the fair value of its stock-based awards. Stock-based compensation is recognized using the straight-line method. As the stock compensation expense is based on awards ultimately expected to vest, it is reduced by forfeitures. The Company accounts for forfeitures as they occur.

Net Loss Per Share

Basic net loss per share is calculated by dividing the net loss by the weighted-average number of shares of common stock outstanding for the period, without consideration for potential dilutive shares of common stock. Since the Company was in a loss position for all periods presented, basic net loss per share is the same as diluted net loss per share since the effects of potentially dilutive securities are antidilutive. Shares of common stock subject to repurchase are excluded from the weighted-average shares.

Comprehensive Loss

Comprehensive loss includes net loss and certain changes in stockholders’ equity that are excluded from net loss. For the years ended December 31, 2023, 2022 and 2021 this was comprised of unrealized gains and losses, net of tax, on the Company’s investments.

Impairment of Long-Lived Assets

Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability is measured by comparison of the carrying amount of an asset group to the future net undiscounted cash flows that the assets are expected to generate. The long-lived assets recoverability test is performed at the asset group level, i.e., the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. If this test indicates that the carrying amount of the asset group is not recoverable, an impairment loss is measured as the amount by which the carrying amount of an asset group exceeds its fair value. Any impairment loss is allocated to the long-lived assets of the group on a pro rata basis using the relative carrying amounts of those assets, except that the carrying amount of an individual asset shall not be reduced below its fair value. The Company recorded long-lived assets impairment loss of $13.2 million for the year ended December 31, 2023 (see Note 5). There were no long-lived assets impairment losses recorded for the years ended December 31, 2022 and December 31, 2021.

Revenue Recognition

The Company’s revenue has been generated through collaboration research and license agreements. The terms of these agreements may contain multiple deliverables which may include (i) grant of licenses, (ii) transfer of know-how, (iii) research and development activities, (iii) clinical manufacturing, and (iv) product supply. The payment terms of these agreements may include nonrefundable upfront fees, payments for research and development activities, payments based upon the achievement of certain milestones, royalty payments based on product sales derived from the collaboration, and payments for supplying product.

The Company analyzes its collaboration arrangements to assess whether they are within the scope of ASC 808, Collaborative Arrangements (ASC 808) to determine whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities. This assessment is performed throughout the life of the arrangement based on changes in the responsibilities of all parties in the arrangement. For collaboration arrangements within the scope of ASC 808 that contain multiple elements, the Company first determines which elements of the collaboration are deemed to be within the scope of ASC 808 and those that are more reflective of a vendor-customer relationship and, therefore, within the scope of Topic 606, Revenue

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from Contracts with Customers (ASC 606). For elements of collaboration arrangements that are accounted for pursuant to ASC 808, an appropriate recognition method is determined and applied consistently, generally by analogy to Topic 606.

For elements of those arrangements that the Company determines should be accounted for under ASC 606, the Company assesses which activities in the collaboration agreements are performance obligations that should be accounted for separately and determines the transaction price of the arrangement, which includes the assessment of the probability of achievement of future milestones and other potential consideration. A performance obligation represents a promise in a contract to transfer a distinct good or service to a customer, which represents a unit of accounting in accordance with ASC 606. A performance obligation is considered distinct from other obligations in a contract when it provides a benefit to the customer either on its own or together with other resources that are readily available to the customer and is separately identified in the contract. The Company considers a performance obligation satisfied once the Company has transferred control of a good or service to the customer, meaning the customer has the ability to use and obtain the benefit of the good or service. A portion of the consideration should be allocated to each distinct performance obligation. The total consideration which the Company expects to collect in exchange for the Company’s products is an estimate and may be fixed or variable. The Company constrains the estimated variable consideration when it assesses it is probable that a significant reversal in the amount of cumulative revenue recognized may occur in future periods. The transaction price is re-evaluated, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as uncertain events are resolved or other changes in circumstances occur. The allocation of the transaction price is performed based on standalone selling prices, which are based on estimated amounts that the Company would charge for a performance obligation if it were sold separately. Revenue is recognized when, or as, performance obligations in the contracts are satisfied, in the amount reflecting the expected consideration to be received from the goods or services transferred to the customers. Funds received in advance are recorded as deferred revenue and are recognized as the related performance obligation is satisfied.

Research and Development Expenses

Research and development costs are expensed as incurred and consist of salaries and benefits, including associated stock-based compensation, and laboratory supplies and facility costs, as well as fees paid to other entities that conduct certain research and development activities on the Company’s behalf. Research and development expenses also include costs incurred for internal and sponsored collaborative research and development activities. Costs associated with co-development activities performed under the various license and collaboration agreements are included in research and development expenses.

Nonrefundable advance payments for goods or services to be received in the future for use in research and development activities are capitalized and then expensed as the related goods are delivered or the services are performed.

Note 2. Recent Accounting Guidance

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 consolidated financial statements.

Recent Accounting Pronouncements Not Yet Adopted

In September 2023, the FASB issued Accounting Standard Update No. 2023-09, Income taxes (Topic 740), Improvement to income tax disclosures, which requires to disclose some additional information in the consolidated financial statements. This standard is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements.

Note 3. Fair Value Measurements

The Company follows authoritative accounting guidance, which among other things, defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis. Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability.

The Company measures and reports its cash equivalents, restricted cash, and investments at fair value.

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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 at December 31, 2023 or 2022.

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 December 31, 2023 are presented in the following table:

Level 1 Level 2 Level 3 Fair Value

(in thousands)

Financial Assets:

1 Included within cash and cash equivalents on the Company’s consolidated balance sheet

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 December 31, 2022 are presented in the following table:

Level 1 Level 2 Level 3 Fair Value

(in thousands)

Financial Assets:

1 Included within cash and cash equivalents on the Company’s consolidated balance sheet

The carrying amounts of accounts payable and accrued liabilities approximate their fair values due to their short-term maturities. The Company’s Level 2 securities are valued using third-party pricing sources. The pricing services utilize industry standard valuation models, including both income and market-based approaches, for which all significant inputs are observable, either directly or indirectly.

There were no transfers of assets between the fair value measurement levels during the years ended December 31, 2023 or 2022.

Note 4. Investments

The fair value and amortized cost of cash equivalents and available-for-sale securities by major security type as of December 31, 2023 are presented in the following table:

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Amortized Cost Unrealized Gains Unrealized Losses Fair Value

(in thousands)

Classified as:

Long-term investments —

Total cash equivalents, and investments $ 444,078

The fair value and amortized cost of cash equivalents and available-for-sale securities by major security type as of December 31, 2022 are presented in the following table:

Amortized Cost Unrealized Gains Unrealized Losses Fair Value

(in thousands)

Classified as:

Long-term investments 59,151

Total cash equivalents, and investments $ 526,327

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 does not intend to sell these investments and it is more likely than not that the Company will not be required to sell the investment before recovery of its amortized cost basis.

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The fair values of available-for-sale debt investments by contractual maturity as of December 31, 2023 and 2022 were as follows:

December 31,

(in thousands)

Due in 3 years — —

Instruments not due at a single maturity date 78,536 10,679

As of December 31, 2023 and 2022, the remaining contractual maturities of available-for-sale securities were one year and less. Realized losses on available-for-sale securities for the year ended December 31, 2023 were $1.0 million. There were no significant realized losses on available-for-sale securities for the years ended December 31, 2022 and 2021. As of December 31, 2023 and 2022, 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 December 31, 2023 and 2022, securities with a fair value of $48.4 million and $329.4 million, respectively, were 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.

As of December 31, 2023 and 2022, the Company recognized $1.7 million and $1.8 million, respectively, of accrued interest receivable from available-for-sale securities within prepaid expenses and other current assets on the consolidated balance sheets.

Note 5. Balance Sheet Components

Property and Equipment, Net

December 31,

(in thousands)

Computer equipment and purchased software 4,663 4,533

Construction in progress — 28

Depreciation expense for the years ended December 31, 2023, 2022 and 2021 was $14.2 million, $14.3 million and $10.5 million, respectively. Disposals of property and equipment were less than $0.1 million for the years ended December 31, 2023 and 2022. Disposals of property and equipment were zero for the year ended December 31, 2021.

To date, the Company has not recorded any impairment loss on its Property and Equipment. The Company continues to monitor its long-lived assets, including Property and Equipment, for events or changes in circumstances which indicate that the carrying amount of its long-lived assets may not be recoverable.

In December 2023, 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 in December 2023 and currently the Company is actively marketing the leased building for sublease. The Company determined that the change in how this property is being used could indicate impairment. The Company has determined it operates in a single operating segment and has one reportable segment. The Company identified two asset groups for purposes of long-lived asset impairment assessment: to be sublet property and

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remaining operating segment. The Company concluded that the carrying value of the sublet property asset group was not recoverable and the estimated fair value of this asset group was below its carrying value. The lower fair value of the sublet property asset group was mainly due to the lower estimated sublease income compared to the lease payments in accordance with the initial operating lease agreement and higher discount rate. The Company applied a discounted cash flow method to estimate fair value of its right-of-use asset. It represents level 3 non-recurring fair value measurement. Based on this analysis, the Company concluded the fair value of the right-of-use asset of $13.8 million was lower than its net book value of $27.0 million. The key inputs to this valuation were expected sublease rental income of $22.7 million through March 31, 2032 and annual discount rate of 9%. The Company recognized pre-tax long-lived asset impairment charge of $13.2 million on the right-of-use asset.

Accrued Liabilities

Accrued liabilities consist of the following:

December 31,

(in thousands)

Accrued compensation and related benefits $ 12,665 $ 17,935

Accrued research and development expenses 9,315 11,790

Total accrued and other current liabilities $ 31,096 $ 39,743

Note 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, including certain contracts and 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 milestone payments upon successful completion of regulatory and sales milestones on a target-by-target basis for the targets including CD19 and B-cell maturation antigen (BCMA), covered by the Pfizer Agreement. The aggregate potential milestone payments upon successful completion of various regulatory milestones in the United States and the European Union are $30.0 million or $60.0 million, depending on the target, with aggregate potential regulatory and development milestones of up to $840.0 million, provided that the Company is not obligated to pay a milestone for regulatory approval in the European Union for an anti-CD19 allogeneic CAR T cell product, to the extent Servier has commercial rights to such territory. The aggregate potential milestone payments upon reaching certain annual net sales thresholds in North America, Europe, Asia, Australia and Oceania (the Territory) for a certain number of targets covered by the Pfizer Agreement are $325.0 million per target. The sales milestones in the foregoing sentence are payable on a country-by-country basis until the last to expire of any Pfizer Royalty Term, as described below, for any product in such country in the Territory. In October 2019, the Territory was expanded to all countries in the world. No milestone or royalty payments were made in the years ended December 31, 2023, 2022 and 2021.

Pfizer is also eligible to receive, on a product-by-product and country-by-country basis, royalties in single-digit percentages on annual net sales for products covered by the Pfizer Agreement. The Company’s royalty obligation with respect to a given product in a given country begins upon the first sale of such product in such country and ends on the later of (i) expiration of the last claim of any applicable patent or (ii) 12 years from the first sale of such product in such country.

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. In connection with the execution of the Cellectis Agreement, on March 8, 2019, the Company and Cellectis also entered into a letter agreement (the Letter Agreement), pursuant to which the Company and Cellectis agreed to terminate the Original Cellectis Agreement. The Original Cellectis Agreement included a research

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collaboration to conduct discovery and pre-clinical development activities to generate CAR T cells directed at targets selected by each party, which was completed in June 2018.

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’ 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. In addition, certain Cellectis intellectual property rights granted by Cellectis to the Company and to Servier pursuant to the Exclusive License and Collaboration Agreement by and between Servier and Pfizer, dated October 30, 2016, which Pfizer assigned to the Company in April 2018, will survive the termination of the Original Cellectis Agreement.

Pursuant to the Cellectis Agreement, the Company granted Cellectis a non-exclusive, worldwide, royalty-free, perpetual and irrevocable license, with sublicensing rights under certain conditions, under certain of the Company's intellectual property, to make, use, sell, import and otherwise commercialize CAR T products directed at certain targets (the Cellectis Targets).

The Cellectis Agreement provides for development and sales milestone payments by the Company of up to $185.0 million per product that is directed against an Allogene Target, with aggregate potential development and sales milestone payments totaling up to $2.8 billion. Cellectis is also eligible to receive tiered royalties on annual worldwide net sales of any products that are commercialized by the Company that contain or incorporate, are made using or are claimed or covered by, Cellectis intellectual property licensed to the Company under the Cellectis Agreement (the Allogene Products), at rates in the high single-digit percentages. Such royalties may be reduced, on a licensed product-by-licensed product and country-by-country basis, for generic entry and for payments due under licenses of third-party patents. Pursuant to the Cellectis Agreement, and subject to certain exceptions, the Company is required to indemnify Cellectis against all thirdparty claims related to the development, manufacturing, commercialization or use of any Allogene Product or arising out of the Company’s material breach of the representations, warranties or covenants set forth in the Cellectis Agreement, and Cellectis is required, subject to certain exceptions, to indemnify the Company against all third party claims related to the development, manufacturing, commercialization or use of CAR T products directed at Cellectis Targets or arising out of Cellectis’ material breach of the representations, warranties or covenants set forth in the Cellectis Agreement.

The royalties are payable, on a licensed product-by-licensed product and country-by-country basis, until the later of (i) the expiration of the last to expire of the licensed patents covering such product; (ii) the loss of regulatory exclusivity afforded such product in such country, and (iii) the tenth anniversary of the date of the first commercial sale of such product in such country; however, in no event shall such royalties be payable, with respect to a particular licensed product, past the twentieth anniversary of the first commercial sale for such product.

Depending on the Cellectis Target, the Company has a right of first refusal or right of first negotiation to purchase or license from Cellectis rights to develop and commercialize products against such Cellectis Targets.

Under the Cellectis Agreement, the Company has certain diligence obligations to progress the development of CAR T product candidates and to commercialize one CAR T product per Allogene Target in one major market country where the Company has received regulatory approval. If the Company materially breaches any of its diligence obligations and fails to cure within 90 days, then with respect to certain targets, such target will cease to be an Allogene Target and instead will become a Cellectis Target.

Unless earlier terminated in accordance with its terms, the Cellectis Agreement will expire on a product-by-product and country-by-country basis, upon expiration of all royalty payment obligations with respect to such licensed product in such country. The Company has the right to terminate the Cellectis Agreement at will upon 60 days’ prior written notice, either in its entirety or on a target-by-target basis. Either party may terminate the Cellectis Agreement, in its entirety or on a target-by-target basis, upon 90 days’ prior written notice in the event of the other party’s uncured material breach. The Cellectis Agreement may also be terminated by the Company upon written notice at any time in the event that Cellectis becomes bankrupt or insolvent or upon written notice within 60 days of a consummation of a change of control of Cellectis.

All costs the Company incurred in connection with this agreement were recognized as research and development expenses in the consolidated statement of operations. For the years ended December 31, 2023 and 2022, zero clinical development milestones were achieved. For the year ended December 31, 2021, $10.0 million of costs were incurred related to the achievement of clinical development milestones under this agreement.

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License and Collaboration Agreement with Servier

As part of the Pfizer Agreement, Pfizer assigned to the Company an Exclusive License and Collaboration Agreement (the 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.

Under the Servier Agreement, the Company has an exclusive license to develop, manufacture and commercialize UCART19, ALLO-501 and ALLO-501A in the field of anti-tumor adoptive immunotherapy in the United States, with an exclusive option to obtain the same rights for additional product candidates in the United States and, if Servier does not elect to pursue development or commercialization of those product candidates in certain markets outside of the United States pursuant to its license, outside of the United States as well. The Company is not required to make any additional payments to Servier to exercise an option. If the Company opts-in to another product candidate, Servier has the right to obtain rights to such product candidate outside the United States and to share development costs for such product candidate.

Under the Servier Agreement, the Company is required to use commercially reasonable efforts to develop and obtain marketing approval in the United States in the field of anti-tumor adoptive immunotherapy for at least one product directed against CD19, and Servier is required to use commercially reasonable efforts to develop and obtain marketing approval in the European Union, and one other country in a group of specified countries outside of the European Union and the United States, in the field of anti-tumor adoptive immunotherapy for at least one allogeneic adaptive T cell product directed against a certain Company-selected target.

For product candidates that the Company is co-developing with Servier, including UCART19, ALLO-501 and ALLO-501A, the Company is responsible for 60% of the specified development costs and Servier is responsible for the remaining 40% of the specified development costs under the applicable global research and development plan. Subject to certain restrictions, each party has the right to conduct activities that are specific to its territory outside the global research and development plan at such party’s sole expense. In addition, each party is solely responsible for commercialization activities in its territory at such party’s sole expense.

The Company is required to make milestone payments to Servier upon successful completion of regulatory and sales milestones. The Servier Agreement provides for aggregate potential payments by the Company to Servier of up to $137.5 million upon successful completion of various regulatory milestones, and aggregate potential payments by the Company to Servier of up to $78.0 million upon successful completion of various sales milestones. Similarly, Servier is required to make milestone payments upon successful completion of regulatory and sales milestones for products directed at the Allogene-target covered by the Servier Agreement that achieves such milestones. The total potential payments that Servier is obligated to make to the Company under the Servier Agreement upon successful completion of regulatory and sales milestones are $42.0 million and €70.5 million ($77.8 million), respectively. The foregoing milestones are subject to certain adjustments if the Company obtains rights for certain products outside of the United States upon Servier’s election not to pursue such rights.

Each party is also eligible to receive tiered royalties on annual net sales in countries within the paying party’s respective territory of any licensed products that are commercialized by such party that are directed at the targets licensed by such party under the Servier Agreement. The royalty rates are in a range from the low tens to the high teen percentages. Such royalties may be reduced for interchangeable drug entry, expiration of patent rights and amounts paid pursuant to licenses of third-party patents. The royalty obligation for each party with respect to a given licensed product in a given country in each party’s respective territory (the Servier Royalty Term) begins upon the first commercial sale of such product in such country and ends after a defined number of years.

Unless earlier terminated in accordance with the Servier Agreement, the Servier Agreement will continue, on a licensed product-by-licensed product and country-by-country basis, until the Servier Royalty Term with respect to the sale of such licensed product in such country expires.

On September 15, 2022, Servier sent a notice of discontinuation (Discontinuation) of its involvement in the development of all licensed products directed against CD19, including UCART19, ALLO-501 and ALLO-501A (collectively, CD19 Products), pursuant to the Servier Agreement. Servier’s Discontinuation provides the Company with the right to elect a license to the CD19 Products outside of the United States (Ex-US Option) and does not otherwise affect the Company's current exclusive license for the development and commercialization of CD19 Products in the United States. However, Servier has

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disputed the implications of the Discontinuation, namely whether development cost contributions continue and the timeframe during which the Company has the right to elect a license to CD19 Products outside of the United States.

In December 2022, Servier sent the Company a notice for material breach due to the Company's purported refusal to allow an audit of certain manufacturing costs under the cost share arrangement. While the Company does not believe Servier has such an audit right, the Company submitted to a review of the Company's manufacturing costs of CD19 Products to recover outstanding manufacturing costs owed by Servier to the Company. In July 2023, Servier sent the Company a second notice for material breach alleging that the Company overcharged Servier based on Servier and its accounting firm’s review of costs eligible for cost-sharing under the Servier Agreement. The Company disagrees with the material breach allegations and the Company is disputing such allegations. Absent a resolution between the parties, disputed matters may be resolved in arbitration as specified in the Servier Agreement.

For the years ended December 31, 2023, 2022 and 2021, the Company recorded zero , $19.9 million, and $17.1 million, respectively, of net cost recoveries under the cost-sharing terms of the Servier Agreement as a reduction to research and development expenses. As of December 31, 2023 and 2022, amounts due from Servier of zero and $1.5 million, respectively, were recorded in other current assets in the accompanying consolidated balance sheets. For the year ended December 31, 2022, $8.0 million in costs were incurred related to the achievement of a clinical development milestone under the Servier Agreement. Zero clinical development milestones were achieved for the years ended December 31, 2023 and 2021.

Research Collaboration and License Agreement with 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. In addition, Notch has granted Allogene an option to add certain specified targets to its exclusive license in exchange for an agreed per-target option fee.

The Notch Agreement includes a research collaboration to conduct research and pre-clinical development activities to generate engineered cells directed to Allogene’s exclusive targets, which will be conducted in accordance with an agreed research plan and budget under the oversight of a joint development committee. Allogene will reimburse Notch’s costs incurred in accordance with such plan and budget. The term of the research collaboration will expire upon the earlier of (i) the fifth anniversary of the date of the Notch Agreement, (ii) at Allogene’s election, following the joint development committee’s determination that for each exclusive target, Notch has met certain success criteria, or (iii) the joint development committee’s determination that the research collaboration cannot be reasonably pursued against any exclusive target due to technical infeasibility or safety issues.

In connection with the execution of the Notch Agreement, Allogene made an upfront payment to Notch of $10.0 million in return for a license to access Notch's technology in order to conduct research pursuant to the Notch Agreement. The Company recognized a research and development expense of $10 million during the year ended December 31, 2019 as the license had no foreseeable alternative future use. In addition, Allogene made a $5.0 million investment in Notch’s series seed convertible preferred stock, resulting in Allogene having a 25% ownership interest in Notch’s outstanding capital stock on a fully diluted basis immediately following the investment. In connection with this investment, an Allogene representative serves on the Notch Board of Directors. In February 2021, the Company made an additional $15.9 million investment in Notch's Series A preferred stock. In October 2021, the Company made an additional $1.8 million investment in Notch's common stock. Immediately following this transaction, the Company's share in Notch was 23.0% on a voting interest basis. The Company did not have a controlling interest in Notch as of December 31, 2023, and continued to account for its investment in Notch as an equity method investment.

Under the Notch Agreement, Notch will be eligible to receive up to $7.3 million upon achieving certain agreed research milestones, up to $4.0 million per exclusive target upon achieving certain pre-clinical development milestones, and up to $283.0 million per exclusive target and cell type (i.e., T cell or NK cell) upon achieving certain clinical, regulatory and commercial milestones. Notch is also entitled to receive tiered royalties in the mid to high single digit range on Allogene’s sales of licensed products, subject to certain reductions, for a term, on a country-by-country and product-by-product basis, commencing on first commercial sale of such product in such country and continuing until the latest of (i) the date upon which there is no valid claim of the licensed patents in such country of sale that covers such product, (ii) the expiration of applicable data or other regulatory exclusivity in such country of sale or (iii) a defined period from the first commercial sale of such product in such country.

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The terms of the Notch Agreement will continue on a product-by-product and country-by-country basis until Allogene’s payment obligations with respect to such product in such country have expired. Following such expiration, Allogene’s license with respect to such product and country shall be perpetual, irrevocable, fully paid up and royalty-free. Allogene may terminate the Collaboration Agreement in whole or on a product-by-product basis upon ninety days’ prior written notice to Notch. Either party may also terminate the Collaboration Agreement with written notice upon material breach by the other party, if such breach has not been cured within a defined period of receiving such notice, or in the event of the other party’s insolvency.

For the years ended December 31, 2023, 2022, and 2021, the Company recorded $1.8 million, $3.8 million, and $4.3 million, respectively, in collaboration costs as research and development expenses. For the year ended December 31, 2021, $0.3 million in costs were incurred related to the achievement of a research milestone under this agreement. Zero milestones were achieved for the years ended December 31, 2023 and 2022. For the year ended December 31, 2023, the Company recorded $3.0 million in other expenses as impairment loss on its equity method investment in Notch. Zero impairment loss was recorded for the years ended December 31, 2022 and 2021.

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. 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. 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 made an upfront payment of $3.0 million to MD Anderson in the year ended December 31, 2020 and made an additional upfront payment of $3.0 million to MD Anderson in the year ended December 31, 2023. The Company is obligated to make further payments to MD Anderson each year upon the anniversary of the agreement effective date through the duration of the agreement term. These costs are expensed to research and development as MD Anderson renders the services under the strategic alliance.

The agreement may be terminated by either party for material breach by the other party. Individual studies may be terminated for, among other things, material breach, health and safety concerns or where the institutional review board, the review board at the clinical site with oversight of the clinical study, requests termination of any study. Where any legal or regulatory authorization is finally withdrawn or terminated, the relevant study will also terminate automatically.

For the years ended December 31, 2023, 2022, and 2021, the Company recorded $0.9 million, $1.4 million, and $1.0 million, respectively, in collaboration costs under this agreement as research and development expenses.

Joint Venture and License Agreement with Allogene Overland Biopharm (CY) Limited (As Restated)

On December 14, 2020, the Company entered into the License Agreement with Allogene Overland, a joint venture established by the Company and Overland, pursuant to the Share Purchase Agreement, 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 acquired Seed Preferred Shares in Allogene Overland representing 49% of Allogene Overland's outstanding stock as partial consideration for the License Agreement, and Overland acquired Seed Preferred Shares representing 51% of Allogene Overland's outstanding stock for $117.0 million in upfront and certain quarterly cash payments, to support operations of Allogene Overland. As of December 31, 2023, the Company and Overland are the sole equity holders in Allogene Overland. The Company received $40 million from Allogene Overland as partial consideration for the License Agreement.

Pursuant to the License Agreement, the Company granted Allogene Overland an exclusive license to develop, manufacture and commercialize certain allogeneic CAR T cell candidates directed at four targets, BCMA, CD70, FLT3, and DLL3, in the JV Territory. As consideration, the Company would also be entitled to additional regulatory milestone payments of up to $40.0 million and, subject to certain conditions, tiered low-to-mid single-digit sales royalties. Subsequent to entering into the License Agreement, Allogene Overland 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.

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Promises that the Company concluded were distinct performance obligations in the License Agreement included: (1) the license of intellectual property and delivery of know-how, (2) the manufacturing license, related know-how and support, (3) know-how developed in future periods, and (4) participation in the joint steering committee.

In order to determine the transaction price, the Company evaluated all the consideration to be received over the duration of the contract. Fixed consideration exists in the form of the upfront payment and Seed Preferred Shares in Allogene Overland. Regulatory milestones and royalties were considered variable consideration. The Company constrains the estimated variable consideration when it assesses it is probable that a significant reversal in the amount of cumulative revenue recognized may occur in future periods. Milestone fees were constrained and not included in the transaction price due to the uncertainties of research and development. The Company re-evaluates the transaction price, including the estimated variable consideration included in the transaction price and all constrained amounts, in each reporting period and as uncertain events are resolved or other changes in circumstances occur.

The Company estimated the fair value of the shares of Seed Preferred Stock at $79.0 million, using probability adjusted future cash infusions based on the upfront and certain quarterly cash payments of $117.0 million committed by Overland. The probability for the future quarterly cash payments of 65% was developed based on consideration of the Company's expectations for future cash infusions from Overland and was applied on a cumulative basis for each quarterly payment. The present value of the future quarterly cash payments was estimated using 11.9% annual discount rate. The fair value measurement is based on significant inputs not observable in the market and, therefore, represents a Level 3 measurement.

The Company determined that the initial transaction price consists of the upfront payment of $40.0 million and noncash consideration of $79.0 million received in the form of the shares of Seed Preferred Stock. The allocation of the transaction price is performed based on standalone selling prices, which are based on estimated amounts that the Company would charge for a performance obligation if it were sold separately. The initial transaction price of $119.0 million was allocated as follows: (i) $114.0 million to the license of intellectual property and know-how, which was recognized upon grant of license and delivery of know-how in the consolidated financial statements for the year ended December 31, 2021 when the know-how was delivered; (ii) $2.3 million to the manufacturing license, related know-how and support, which will be recognized as services are delivered; (iii) $2.1 million to the know-how developed in future periods, which will be recognized as services are delivered, and (iv) $0.6 million to participation in the joint steering committee, which will be recognized over time as the services are delivered. Funds received in advance are recorded as deferred revenue and will be recognized as the performance obligations are satisfied.

The Company has determined that Allogene Overland is a variable interest entity as of December 31, 2023 and 2022, respectively. The Company does not have the power to direct the activities which most significantly affect Allogene Overland's economic performance. Accordingly, for the years ended December 31, 2023 and 2022, the Company did not consolidate Allogene Overland because the Company determined that it was not the primary beneficiary. The Company's total equity investment in Allogene Overland as of December 31, 2023 and 2022 was zero and $4.5 million, respectively (see Note 8).

For the years ended December 31, 2023, 2022 and 2021, the Company recognized $0.1 million, $0.2 million and $114.1 million, respectively, of collaboration revenue, primarily related to support services and the delivery of a performance obligation consisting of a license of intellectual property and related know-how which was delivered in the first quarter of 2021. For the year ended December 31, 2022, the Company recorded $0.7 million of net cost recoveries under the terms of the license agreement as a reduction to research and development expenses. For the years ended December 31, 2023 and 2021, the Company recorded zero net cost recoveries.