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Allogene Therapeutics, Inc.

For the period ended Jun 30, 2026. Filed Aug 12, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 12, 2026

ALLO$1.04-4.6%Stored close · as of Nov 6, 2026

What changed in Risk Factors?

Read the current filing

Previous report: 10-Q

Period ended 2026-03-31; filed 2026-05-13.

0001628280-26-034585

Item 1A. Risk Factors

Current report: 10-Q

Period ended 2026-06-30; filed 2026-08-12.

0001628280-26-056213

Item 1A. Risk Factors

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 462 previous paragraphs and 463 current paragraphs.

431 unchanged; 26 reworded; 5 added; 4 removed; 1 previous and 1 current paragraphs rearranged.

Tables are not compared: 0 previous and 0 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (5)

Current report

As we work toward expanding ALPHA3 into additional jurisdictions, including the European Union, we may face additional regulatory, operational, site activation, privacy, data transfer, vendor coordination, import/export, pharmacovigilance and clinical-trial execution requirements. Any delays, additional data requests, country-specific requirements or other issues encountered in connection with these activities could delay site activation, patient screening or enrollment, and could increase costs or adversely affect the timing or conduct of ALPHA3.

Current report

Delays in the regulatory approval or commercial availability of the CLARITY assay, or limitations on coverage or reimbursement for the assay, could adversely affect the development and commercialization of cema-cel.*

Current report

Additionally, if the CLARITY assay or another MRD assay is required to identify patients eligible for cema-cel, the commercial success of cema-cel will depend in part on the assay’s commercial availability and on coverage and adequate reimbursement for the assay. Third-party payors may decline to cover the assay, provide inadequate reimbursement, impose prior authorization requirements or restrictions on testing frequency, site of service or other utilization parameters, or require patients to bear significant out-of-pocket costs. Any such limitations could reduce MRD testing, delay or prevent the identification of eligible patients, limit physician and patient adoption of the testing-and-treatment pathway, and materially reduce demand for and sales of cema-cel, if approved. Since we do not control the approval or commercialization strategy of the assay, our ability to influence its availability, pricing, coverage, reimbursement and regulatory compliance will be limited.

Current report

The general approach for FDA or comparable foreign regulatory authorities approval of a new biologic or drug is for the sponsor to provide dispositive data from two well-controlled, Phase 3 clinical studies of the relevant biologic or drug in the relevant patient population. Phase 3 clinical studies typically involve hundreds of patients, have significant costs and take years to complete. We expect ongoing FDA, EMA, or comparable foreign regulatory authorities feedback on our trials, some of which may lead to changes in the trials, which could cause future delays to our trials, or impact the timing or nature of planned data analyses or the timing, scope or nature of any public disclosure regarding such analyses. We currently anticipate that a planned interim EFS analysis for ALPHA3 will occur in mid-2027. The analysis is expected to be conducted under the oversight of an independent Data and Safety Monitoring Board (DSMB), and we may remain blinded to some or all treatment-arm-specific results. The information provided to us by the DSMB may be limited to a recommendation concerning continuation of the trial and may not include treatment-arm-specific results. The FDA may advise or request, or the DSMB may recommend, that we not receive or unblind comparative interim EFS data or that any public disclosure be limited or delayed while the trial continues. If unblinded interim comparative results are disclosed while the trial is ongoing, enrollment, treatment decisions or other aspects of trial conduct could be affected, potentially introducing bias or impairing the interpretability or regulatory acceptability of the final results. Accordingly, we may not announce treatment-arm-specific interim EFS results in mid-2027, and any public update may be limited.

Current report

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biologic intended to treat a rare disease or condition, defined as a disease or condition with a patient population of fewer than 200,000 in the United States, or a patient population greater than 200,000 in the United States when there is no reasonable expectation that the cost of developing and making available the drug or biologic in the United States will be recovered from sales in the United States for that drug or biologic. In order to obtain orphan drug designation, the request must be made before submitting a BLA. In the United States, orphan drug designation entitles a party to financial incentives such as opportunities for grant funding towards clinical trial costs, tax advantages, and user-fee waivers. After the FDA grants orphan drug designation, the generic identity of the drug and its potential orphan use are disclosed publicly by the FDA. Orphan drug designation does not convey any advantage in, or shorten the duration of, the regulatory review and approval process.
Removed paragraphs (4)

Previous report

The time required for regulatory approval of the CLARITY assay in jurisdictions outside the U.S. may be protracted, which presents regulatory, operational, and commercialization risks.

Previous report

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries where Overland Therapeutics or its affiliates may do business, do not favor the enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biopharmaceutical products, which could make it difficult for us or Overland Therapeutics or any of its affiliates to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Previous report

Our management is responsible for establishing and maintaining adequate internal control over financial reporting designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP. Our management is likewise required, on a quarterly basis, to evaluate the effectiveness of our internal controls and to disclose any changes and material weaknesses identified through such evaluation in those internal controls. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

Previous report

In addition, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporate Law, which may prohibit certain business combinations with stockholders owning 15% or more of our outstanding voting stock. These anti-takeover provisions and other provisions in our amended and restated certificate of incorporation and amended and restated bylaws could make it more difficult for stockholders or potential acquirors to obtain control of our board of directors or initiate actions that are opposed by the then-current board of directors and could also delay or impede a merger, tender offer or proxy contest involving our company. These provisions could also discourage proxy
Reworded paragraphs (26)

Previous wording

•No CAR T therapy has been approved as a part of first-line consolidation strategy for the treatment of large B-cell lymphoma (LBCL) patients, which presents significant regulatory, commercial, and operational risks, and there is no assurance of success in this unproven setting.

Current wording

•No CAR T therapy has been approved as part of a first-line consolidation strategy for the treatment of large B-cell lymphoma (LBCL) patients, which presents significant regulatory, commercial, and operational risks, and there is no assurance of success in this unproven setting.

Previous wording

We are a clinical-stage biopharmaceutical company and investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that any potential product candidate will fail to demonstrate adequate efficacy or an acceptable safety profile, gain regulatory approval and become commercially viable. We are advancing an allogeneic CAR T platform of primarily early-stage product candidates and have no products approved for commercial sale and have not generated any revenue from product sales to date, and we will continue to incur significant research and development and other expenses related to our ongoing operations. To date, we have devoted substantially all of our resources to organizing and staffing our company, business planning, raising capital, securing related intellectual property rights, building our product manufacturing infrastructure, including a dedicated good manufacturing practices (GMP) manufacturing facility, manufacturing our clinical product candidates and conducting discovery, research and development activities for our programs. As a result, we are not profitable and have incurred net losses in each period since our inception. For the year ended December 31, 2025, we reported a net loss of $190.9 million. For the three months ended March 31, 2026, we reported a net loss of $42.6 million. As of March 31, 2026, we had an accumulated deficit of $2.1 billion.

Current wording

We are a clinical-stage biopharmaceutical company and investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that any potential product candidate will fail to demonstrate adequate efficacy or an acceptable safety profile, gain regulatory approval and become commercially viable. We are advancing an allogeneic CAR T platform of primarily early-stage product candidates and have no products approved for commercial sale and have not generated any revenue from product sales to date, and we will continue to incur significant research and development and other expenses related to our ongoing operations. To date, we have devoted substantially all of our resources to organizing and staffing our company, business planning, raising capital, securing related intellectual property rights, building our product manufacturing infrastructure, including a dedicated good manufacturing practices (GMP) manufacturing facility, manufacturing our clinical product candidates and conducting discovery, research and development activities for our programs. As a result, we are not profitable and have incurred net losses in each period since our inception. For the year ended December 31, 2025, we reported a net loss of $190.9 million. For the six months ended June 30, 2026, we reported a net loss of $85.3 million. As of June 30, 2026, we had an accumulated deficit of $2.1 billion.

Previous wording

As of March 31, 2026, we had $266.9 million in cash and cash equivalents and investments, before giving effect to $187.9 million in net proceeds from our April 2026 Public Offering. Although the April 2026 Public Offering increased our available capital, changing circumstances may cause us to consume capital significantly faster than we currently anticipate, and we may need to spend more money than currently expected because of circumstances beyond our control. We may also need to raise additional capital sooner than we currently anticipate if we choose to expand more rapidly than we presently plan. In any event, we will require additional capital for the further development and commercialization of our product candidates, including funding our internal manufacturing capabilities.

Current wording

As of June 30, 2026, we had $423.6 million in cash and cash equivalents and investments. Changing circumstances may cause us to consume capital significantly faster than we currently anticipate, and we may need to spend more money than currently expected because of circumstances beyond our control. We may also need to raise additional capital sooner than we currently anticipate if we choose to expand more rapidly than we presently plan. In any event, we will require additional capital for the further development and commercialization of our product candidates, including funding our internal manufacturing capabilities.

Previous wording

We cannot be certain that additional funding will be available on acceptable terms, or at all. We have no committed source of additional capital and our stock price has faced extreme volatility and has declined. In addition, following our April 2026 Public Offering, our ability to issue additional securities or grant new equity awards under our 2018 Plan is constrained unless and until our stockholders approve, and we implement, an amendment to increase the authorized number of shares of our common stock. Our success depends in part on our continued ability to attract, retain and motivate highly qualified management and key personnel. If our stockholders do not approve an amendment to increasethe authorized number of shares of our common stock in a timely manner, or at all, the resulting lack of available authorized shares of common stock for future equity incentive awards could adversely affect our ability to attract, retain and motivate employees and other key personnel. In addition, we may be unable to access the capital markets, consummate corporate collaborations or partnerships, or pursue other business opportunities that are integral to our growth and success, at a time when it would be advantageous to do so, or at all. Any of the foregoing could materially and adversely affect our business.

Current wording

We cannot be certain that additional funding will be available on acceptable terms, or at all. We have no committed source of additional capital and our stock price has faced extreme volatility and has declined. We may be unable to access the capital markets, consummate corporate collaborations or partnerships, or pursue other business opportunities that are integral to our growth and success, at a time when it would be advantageous to do so, or at all. Any of the foregoing could materially and adversely affect our business.

Previous wording

We are also advancing product candidates against unexplored targets and with new technology. For example, we are advancing ALLO-316 against the CD70 target, and ALLO-329 against CD19 and CD70 targets. ALLO-316 may have limited efficacy, even accounting for the selection of patients with CD70 positive tumors, or have off-target toxicities. As a dual-targeting CAR T product candidate, ALLO-329 may demonstrate limited ability to target and eliminate cells, including both B and T lymphocytes, that express one or both targets. Additionally, there may be unexpected toxicity, such as severe or prolonged immunosuppression or hyperinflammation, arising from targeting both CD19 and CD70 simultaneously. Since CD70 is found on activated T and other immune cells, ALLO-316 and ALLO-329 may also cause fratricide resulting in the loss of ALLO-316 or ALLO-329 cells, either during the manufacturing process or after the cells are administered to patients, or may deplete host T or other immune cells.

Current wording

We are also advancing product candidates against unexplored targets and with new technology. For example, ALLO-316 targets CD70, and ALLO-329 targets CD19 and CD70. As a dual-targeting CAR T product candidate, ALLO-329 may demonstrate limited ability to target and eliminate cells, including both B and T lymphocytes, that express one or both targets. Additionally, there may be unexpected toxicity, such as severe or prolonged immunosuppression or hyperinflammation, arising from targeting both CD19 and CD70 simultaneously. Since CD70 is found on activated T and other immune cells, ALLO-316 and ALLO-329 may also cause fratricide resulting in the loss of ALLO-316 or ALLO-329 cells, either during the manufacturing process or after the cells are administered to patients, or may deplete host T or other immune cells.

Previous wording

Additionally, if the CLARITY assay is required for commercial use alongside cema-cel, its approval and reimbursement as a medical device could impact the market adoption of cema-cel. Since we do not control the approval or commercialization strategy of the assay, our ability to ensure its availability, pricing, and regulatory compliance will be limited. Following Foresight’s acquisition by Natera, we may have even less influence over decisions regarding CLARITY’s development, regulatory strategy, commercialization, pricing, or reimbursement approach. If Foresight encounters regulatory setbacks or is unable to secure timely approval, our ability to commercialize cema-cel may be adversely affected.

Current wording

Following Foresight’s acquisition by Natera, we may have even less influence over decisions regarding CLARITY’s development, regulatory strategy, commercialization, pricing, or reimbursement approach. If Foresight encounters regulatory setbacks or is unable to secure timely approval, or if adequate coverage and reimbursement for the assay are not available, our ability to commercialize cema-cel may be adversely affected.

Previous wording

If the approval of the CLARITY assay in any country or region is delayed, denied, or subject to additional regulatory requirements, our cema-cel clinical development timeline, regulatory approval prospects, and potential commercial success in such country or region could be materially impacted, which could adversely affect our business, financial condition, and future growth.

Current wording

If the approval of the CLARITY assay in any country or region is delayed, denied, or subject to additional regulatory requirements, or if coverage or adequate reimbursement for the assay is not available, our cema-cel clinical development timeline, regulatory approval prospects, and potential commercial success in such country or region could be materially impacted, which could adversely affect our business, financial condition, and future growth.

Previous wording

We plan to submit investigational new drug (IND) applications or IND amendments and equivalent foreign applications for current and potentially new product candidates or indications in the future. We cannot be sure that submission of an IND or IND amendment or an equivalent foreign application will result in the FDA or other comparable foreign regulatory authorities allowing testing and clinical trials to begin on our anticipated timelines, if at all, or that, once begun, issues will not arise that suspend or terminate such clinical trials. The manufacturing of allogeneic CAR T cell therapy remains an emerging and evolving field. Accordingly, we expect Chemistry, Manufacturing and Controls (CMC) related topics, including product specification, will be a focus of IND reviews, which may delay the clearance of INDs or IND amendments, and we may face internal or third-party resource constraints in preparing responses and supporting CMC-related submissions.

Current wording

We plan to submit investigational new drug (IND) applications or IND amendments and equivalent foreign applications for current and potentially new product candidates or indications in the future. We cannot be sure that submission of an IND or IND amendment or an equivalent foreign application will result in the FDA or other comparable foreign regulatory authorities allowing testing and clinical trials to begin on our anticipated timelines, if at all, or that, once begun, issues will not arise that suspend or terminate such clinical trials. The manufacturing of allogeneic CAR T cell therapy remains an emerging and evolving field. Accordingly, we expect Chemistry, Manufacturing and Controls (CMC) related topics, including product specification, will be a focus of IND reviews, which may delay the clearance of INDs or IND amendments, and we may face internal or third-party resource constraints in preparing responses and supporting CMC-related submissions. For instance, if we introduce changes to the manufacturing of our product candidates, regulatory authorities may require additional studies or clinical data to support the changes, which could delay our clinical trial timelines. Additionally, even if such regulatory authorities agree with the design and implementation of the clinical trials set forth in an IND, IND amendment or clinical trial application, we cannot guarantee that such regulatory authorities will not change their requirements in the future.

Previous wording

We operate CF1, our manufacturing facility located in Newark, California, that is designed to support our clinical trials and potential commercial production and worldwide distribution of allogeneic CAR T cell products for blood cancers, solid tumors and autoimmune diseases. Introducing any product manufactured at our manufacturing facility into an ongoing clinical trial would be subject to FDA review, and may result in increased costs and delays in conducting such trial, submitting a biologics license application (BLA) or marketing authorization application (MAA) and/or gaining FDA or other comparable foreign regulatory authority approval. Similar conditions may apply if we make process changes to our product candidates, as we plan to do for our BCMA program. In addition, any process or raw material change could introduce unacceptable product variability and impact our ability to manufacture on a consistent and reproducible basis. Ultimately, any failure or delays in manufacturing and qualification of our product candidates at our CDMO or at our own manufacturing facility could delay our clinical trials.

Current wording

We operate CF1, our manufacturing facility located in Newark, California, that is designed to support our clinical trials and potential commercial production and worldwide distribution of allogeneic CAR T cell products for blood cancers, solid tumors and autoimmune diseases. Introducing any product manufactured at our manufacturing facility into an ongoing clinical trial would be subject to FDA review, and may result in increased costs and delays in conducting such trial, submitting a biologics license application (BLA) or marketing authorization application (MAA) and/or gaining FDA or other comparable foreign regulatory authority approval. Similar conditions may apply if we make process changes to our product candidates. In addition, any process or raw material change could introduce unacceptable product variability and impact our ability to manufacture on a consistent and reproducible basis. Ultimately, any failure or delays in manufacturing and qualification of our product candidates at our CDMO or at our own manufacturing facility could delay our clinical trials.

Previous wording

We do not yet have sufficient information to reliably estimate the cost of the commercial manufacturing of our product candidates, and the actual cost to manufacture our product candidates could materially and adversely affect the commercial viability of our product candidates. The commercial dose and treatment regimen may affect our ability to scale and will affect our cost per dose. For instance, because our anti-BCMA product candidates may require a higher dose than cema-cel, it is possible that it may be more difficult to scale production of our anti-BCMA product candidates to meet demand. As a result, we may never be able to develop a commercially viable product. Our manufacturing facility will also require FDA approval, and possibly similar approval from comparable foreign regulatory authorities before it can be used for commercial production, which we may never obtain. Even if approved, we would be subject to ongoing periodic unannounced inspection by the FDA, EMA, the Drug Enforcement Administration and corresponding state agencies to ensure strict compliance with current good manufacturing practices (cGMP), and other government regulations.

Current wording

We do not yet have sufficient information to reliably estimate the cost of the commercial manufacturing of our product candidates, and the actual cost to manufacture our product candidates could materially and adversely affect the commercial viability of our product candidates. The commercial dose and treatment regimen may affect our ability to scale and will affect our cost per dose. For instance, because certain product candidates may require a higher dose than cema-cel, it is possible that it may be more difficult to scale production of such product candidates to meet demand. As a result, we may never be able to develop a commercially viable product. Our manufacturing facility will also require FDA approval, and possibly similar approval from comparable foreign regulatory authorities before it can be used for commercial production, which we may never obtain. Even if approved, we would be subject to ongoing periodic unannounced inspection by the FDA, EMA, the Drug Enforcement Administration and corresponding state agencies to ensure strict compliance with current good manufacturing practices (cGMP), and other government regulations.

Previous wording

In May 2025, we implemented a targeted reduction in manufacturing activities and reduced certain manufacturing-related headcount to focus our resources on critical clinical programs (Workforce Reduction). While we believe we currently hold sufficient inventory of cema-cel, ALLO-329, and ALLO-316 to meet our near-term clinical needs based on our current forecasts, including completing our current ALPHA3, RESOLUTION and TRAVERSE trials, this operational scale-down introduces several risks that could adversely affect our business in both the near and long term.

Current wording

In May 2025, we implemented a targeted reduction in manufacturing activities and reduced certain manufacturing-related functions to focus our resources on critical clinical programs (Workforce Reduction). We believe we currently hold sufficient inventory of cema-cel and ALLO-329 to meet our near-term clinical needs, including completing our current ALPHA3 and RESOLUTION trials. Additionally, while we have completed enrollment and dosing in our TRAVERSE trial, we cannot be certain that our existing ALLO-316 inventory would be sufficient to complete any future ALLO-316 clinical studies. Although we increased hiring in the second quarter of 2026 to support manufacturing operations, clinical development and BLA readiness, the prior operational scale-down continues to present several risks that could adversely affect our business in both the near and long term, and we cannot be certain that these hiring efforts will sufficiently mitigate those risks.

Previous wording

Our ability to compete in the highly competitive biotechnology and pharmaceutical industries depends upon our ability to attract and retain highly qualified managerial, scientific, medical and other personnel. We are highly dependent on our management, including our Executive Chair, our President and Chief Executive Officer, our Executive Vice President, Research & Development and Chief Medical Officer, our Senior Vice President and Chief Technical Officer, our Chief Financial Officer, and our General Counsel. The loss of the services of any of our executive officers, other key employees, and other scientific and medical advisors, and our inability to find suitable replacements could result in delays in product development and harm our business.

Current wording

Our ability to compete in the highly competitive biotechnology and pharmaceutical industries depends upon our ability to attract and retain highly qualified managerial, scientific, medical and other personnel. We are highly dependent on our management, including our Executive Chair, our President and Chief Executive Officer and interim CMO, our Senior Vice President and Chief Technical Officer, our Chief Financial Officer, and our General Counsel. The loss of the services of any of our executive officers, other key employees, and other scientific and medical advisors, and our inability to find suitable replacements could result in delays in product development and harm our business.

Previous wording

Additionally, foreign acquisitions and joint ventures are subject to additional risks, including those related to integration of operations across different cultures and languages, currency risks, potentially adverse tax consequences of overseas operations and the particular economic, political and regulatory risks associated with specific countries. For instance, our joint venture with HBP has faced challenges relating to the regulatory and competitive environment in China for allogeneic CAR T products, as well as challenges within the capital markets for financing allogeneic CAR T development. Our joint venture may face manufacturing difficulties, such as from changes in raw materials or processes due to local regulations, or delivering our licensed product candidates in China, Taiwan, South Korea or Singapore, which could prevent any development or commercialization of our licensed product candidates in the region. The joint venture will also require significant operational and financial support in the future by us or third parties, and any future financing of the joint venture would increase our expenses or dilute our ownership in the joint venture. We may also face unknown liabilities due to supporting our joint venture, such as due to any misuse of materials supplied to our joint venture.

Current wording

Additionally, foreign acquisitions and joint ventures are subject to additional risks, including those related to integration of operations across different cultures and languages, currency risks, potentially adverse tax consequences of overseas operations and the particular economic, political and regulatory risks associated with specific countries. For instance, our joint venture with HBP faced challenges relating to the regulatory and competitive environment in China for allogeneic CAR T products, as well as challenges within the capital markets for financing allogeneic CAR T development.

Previous wording

Our ALPHA3 clinical trial is now proceeding with two arms: (1) cema-cel with a lymphodepletion regimen consisting of fludarabine and cyclophosphamide (FC) without ALLO-647, and (2) the control arm, which is observation. In April 2026, we reported interim futility analysis results from the first 24 patients randomized to the two ongoing arms. The results showed higher MRD negativity and greater median ctDNA reduction in the cema-cel arm compared with observation. However, this preliminary data set is limited, is derived from a small patient cohort, and does not include unblinded EFS, progression-free survival or overall survival data. MRD conversion or clearance is not an accepted surrogate endpoint by regulatory agencies for LBCL and may not correlate with clinical outcomes or regulatory approvability, and there remains a risk that the FC lymphodepletion regimen alone may not sufficiently suppress the patient’s immune system to allow adequate expansion, persistence, and efficacy of the CAR T cells, across the broader ALPHA3 population. Moreover, while we believe our interim MRD and safety results are encouraging, they are based on a limited number of patients and may not be predictive of future results or demonstrate that ALPHA3 will meet its primary endpoint.

Current wording

Our ALPHA3 clinical trial is now proceeding with two arms: (1) cema-cel with a lymphodepletion regimen consisting of fludarabine and cyclophosphamide (FC) without ALLO-647, and (2) the control arm, which is observation. In April 2026, we reported interim futility analysis results from the first 24 patients randomized to the two ongoing arms. The results showed higher MRD negativity and greater median ctDNA reduction at Day 45 post-randomization in the cema-cel arm compared with observation. However, this preliminary data set is limited, is derived from a small patient cohort, and does not include unblinded EFS, progression-free survival or overall survival data. MRD conversion or clearance is not an accepted surrogate endpoint by regulatory agencies for LBCL and may not correlate with clinical outcomes or regulatory approvability, and there remains a risk that the FC lymphodepletion regimen alone may not sufficiently suppress the patient’s immune system to allow adequate expansion, persistence, and efficacy of the CAR T cells, across the broader ALPHA3 population. Moreover, while we believe our interim MRD and safety results are encouraging, they are based on a limited number of patients and may not be predictive of future results or demonstrate that ALPHA3 will meet its primary endpoint. In addition, we may remain blinded to some or all results from the planned interim EFS analysis, and the timing and scope of any public disclosure regarding that analysis will depend on FDA feedback, DSMB recommendations and considerations relating to preserving the integrity of the ongoing trial. Even if the interim EFS analysis meets a prespecified efficacy boundary or otherwise yields statistically significant results, the FDA may determine that the results are insufficient to support a BLA submission or approval and may require us to continue ALPHA3 through the primary EFS analysis, obtain longer-term follow-up or provide additional data.

Previous wording

To secure our own readily available source of anti-CD52 antibody, we were previously developing our own monoclonal anti-CD52 antibody, ALLO-647, which we used in certain of our clinical trials. ALLO-647 may cause SAEs that alemtuzumab may cause, including fatal adverse events, infusion related reactions, immune thrombocytopenia, glomerular nephropathies, thyroid disorders, autoimmune cytopenias, autoimmune hepatitis, hemophagocytic lymphohistiocytosis, acquired hemophilia, infections, stroke, and progressive multifocal leukoencephalopathy. For example, a patient death occurred in the recently discontinued FCA arm of our ALPHA3 trial. This Grade 5 SAE, which occurred on Day 54 post-infusion, involved fulminant hepatic failure caused by disseminated adenovirus infection, potentially worsened by acetaminophen toxicity. The depth of immunosuppression likely associated with ALLO-647 is believed to have increased susceptibility to this viral infection. In addition, we may explore various dosing strategies for lymphodepletion in our clinical trials, such as including varying doses of the chemotherapy agents and/or other agents or eliminating one or more of the agents, which may alter the risk of SAEs or have other undesirable outcomes such as a reduction of the efficacy of treatment. Additionally, our experimental lymphodepletion regimens may show different safety profiles when paired with different allogeneic CAR T product candidates such that regimens deemed safe with one CAR T product candidate may be determined to be associated with unacceptable toxicity when combined with another CAR T candidate or with the same candidate in a different patient population. If observed, these differences may require additional clinical exploration and may cause delays in the execution or termination of development campaigns. Refer to the section entitled "Business—Product Pipeline and Development Strategy" included in our Annual Report for information on safety events.

Current wording

To secure our own readily available source of anti-CD52 antibody, we were previously developing our own monoclonal anti-CD52 antibody, ALLO-647, which we used in certain of our clinical trials. ALLO-647 may cause SAEs that alemtuzumab may cause, including fatal adverse events, infusion related reactions, immune thrombocytopenia, glomerular nephropathies, thyroid disorders, autoimmune cytopenias, autoimmune hepatitis, hemophagocytic lymphohistiocytosis, acquired hemophilia, infections, stroke, and progressive multifocal leukoencephalopathy. For example, a patient death occurred in the discontinued FCA arm of our ALPHA3 trial. This Grade 5 SAE, which occurred on Day 54 post-infusion, involved fulminant hepatic failure caused by disseminated adenovirus infection, potentially worsened by acetaminophen toxicity. The depth of immunosuppression likely associated with ALLO-647 is believed to have increased susceptibility to this viral infection. In addition, we may explore various dosing strategies for lymphodepletion in our clinical trials, such as including varying doses of the chemotherapy agents and/or other agents or eliminating one or more of the agents, which may alter the risk of SAEs or have other undesirable outcomes such as a reduction of the efficacy of treatment. Additionally, our experimental lymphodepletion regimens may show different safety profiles when paired with different allogeneic CAR T product candidates such that regimens deemed safe with one CAR T product candidate may be determined to be associated with unacceptable toxicity when combined with another CAR T candidate or with the same candidate in a different patient population. If observed, these differences may require additional clinical exploration and may cause delays in the execution or termination of development campaigns. Refer to the section entitled "Business—Product Pipeline and Development Strategy" included in our Annual Report for information on safety events.

Previous wording

In addition, vendors face challenges in obtaining donor material. While we have donor material on hand, if our vendors are unable to secure donor material, we may no longer have sufficient donor material to manufacture our product candidates. In addition, we have been advised by a supplier that provides donor material that its donor-material business is expected to be divested to a private equity group in the second quarter of 2026. Although the supplier has represented that the transition in ownership is not expected to disrupt orders in process, personnel supporting our projects, or existing capabilities, there can be no assurance that the divestiture and related transition activities will not result in delays, changes to operating processes, quality systems, capacity allocation, regulatory compliance support, pricing, or prioritization of customer orders.

Current wording

In addition, vendors face challenges in obtaining donor material. While we have donor material on hand, if our vendors are unable to secure donor material, we may no longer have sufficient donor material to manufacture our product candidates. For example, our supplier of viral vectors used in the manufacturing of ALLO-329 completed the divestiture of its viral vector/CDMO business to a private equity group in the second quarter of 2026. Although the supplier has represented that the transition in ownership is not expected to disrupt orders in process, personnel supporting our projects, or existing capabilities, there can be no assurance that the divestiture and related transition activities will not result in delays, changes to operating processes, quality systems, capacity allocation, regulatory compliance support, pricing, or prioritization of customer orders.

Previous wording

In addition, we have been advised by a supplier that provides viral vectors that its viral vector/CDMO business is expected to be divested to a private equity group in the second quarter of 2026. Although the supplier has represented that the transition in ownership is not expected to disrupt orders in process, project teams supporting our programs, or existing capabilities, there can be no assurance that the divestiture and related transition activities will not result in delays, changes to operating processes, quality systems, capacity allocation, regulatory compliance support, pricing, or prioritization of customer orders. Any disruption or delay in the supply of viral vectors or other key raw materials, including as a result of changes in ownership or integration efforts by the new owners, could delay manufacturing, clinical development activities, and, if applicable, preparation of CMC information for regulatory submissions.

Current wording

In addition, our supplier of viral vectors used in the manufacturing of ALLO-329 completed the divestiture of its viral vector/CDMO business to a private equity group in the second quarter of 2026. The supplier has represented that the transition in ownership is not expected to disrupt orders in process, project teams supporting our programs, or existing capabilities, and to date we have not experienced any such impacts, there can be no assurance that the divestiture and related transition activities will not result in delays, changes to operating processes, quality systems, capacity allocation, regulatory compliance support, pricing, or prioritization of customer orders. Any disruption or delay in the supply of viral vectors for ALLO-329 or other key raw materials, including as a result of changes in ownership or integration efforts by the new owners, could delay manufacturing, clinical development activities, and, if applicable, preparation of CMC information for regulatory submissions.

Previous wording

Our research and development activities involve the controlled use of potentially hazardous substances, including chemical and biological materials. We and our suppliers are subject to federal, state and local laws and regulations in the United States governing the use, manufacture, storage, handling and disposal of medical and hazardous materials, and there is a risk of contamination or injury resulting from medical or hazardous materials. For instance, we have had and may continue to have environmental notice of violations at our manufacturing facility. As a result of any such contamination or injury, we may incur liability or local, city, state or federal authorities may curtail the use of these materials and interrupt our business operations. In the event of an accident, we could be held liable for damages or penalized with fines, and the liability could exceed our resources. We do not have any insurance for liabilities arising from medical or hazardous materials. In addition, we have previously shipped certain materials to Allogene Overland PRC in China and may do so in the future to its successor entity. Any violation by our joint venture in the use, manufacture, storage, handling and disposal under foreign law may subject us to additional liability.

Current wording

Our research and development activities involve the controlled use of potentially hazardous substances, including chemical and biological materials. We and our suppliers are subject to federal, state and local laws and regulations in the United States governing the use, manufacture, storage, handling and disposal of medical and hazardous materials, and there is a risk of contamination or injury resulting from medical or hazardous materials. For instance, we have had and may continue to have environmental notice of violations at our manufacturing facility. As a result of any such contamination or injury, we may incur liability or local, city, state or federal authorities may curtail the use of these materials and interrupt our business operations. In the event of an accident, we could be held liable for damages or penalized with fines, and the liability could exceed our resources. We do not have any insurance for liabilities arising from medical or hazardous materials.

Previous wording

The general approach for FDA or comparable foreign regulatory authorities approval of a new biologic or drug is for the sponsor to provide dispositive data from two well-controlled, Phase 3 clinical studies of the relevant biologic or drug in the relevant patient population. Phase 3 clinical studies typically involve hundreds of patients, have significant costs and take years to complete. We expect ongoing FDA, EMA, or comparable foreign regulatory authorities feedback on our trials, some of which may lead to changes in the trials, which could cause future delays to our trials. In addition, even if we believe the results are sufficiently compelling, such as for the ALPHA3 trial, the FDA, EMA, or comparable foreign regulatory authorities could ultimately require longer-term follow-up results, additional data from our clinical trials or additional trials that could delay or prevent our first BLA or MAA submission. The FDA, EMA, or comparable foreign regulatory authorities may require that we conduct a comparative trial against an approved therapy including potentially an approved autologous T cell therapy, which would significantly delay our development timelines and require substantially more resources. In addition, the FDA, EMA, or comparable foreign regulatory authorities may only allow us to evaluate patients that have failed or who are ineligible for autologous therapy, which are extremely difficult patients to treat and patients with advanced and aggressive cancer, and our product candidates may fail to improve outcomes for such patients.

Current wording

FDA, EMA, or comparable foreign regulatory authorities could ultimately require longer-term follow-up results, additional data from our clinical trials, completion of the primary EFS analysis or additional trials that could delay or prevent our first BLA or MAA submission. Any such requirement could delay a BLA submission or potential approval until after the primary EFS analysis. The FDA, EMA, or comparable foreign regulatory authorities may require that we conduct a comparative trial against an approved therapy including potentially an approved autologous T cell therapy, which would significantly delay our development timelines and require substantially more resources. In addition, the FDA, EMA, or comparable foreign regulatory authorities may only allow us to evaluate patients that have failed or who are ineligible for autologous therapy, which are extremely difficult patients to treat and patients with advanced and aggressive cancer, and our product candidates may fail to improve outcomes for such patients.

Previous wording

•the FDA, EMA, or comparable foreign regulatory authorities will review extensive CMC data, our manufacturing process and inspect the relevant commercial manufacturing facility and may not approve our manufacturing process or facility;

Current wording

•the FDA, EMA, or comparable foreign regulatory authorities will review extensive CMC data, our manufacturing process and inspect the relevant commercial manufacturing facilities and may not approve our manufacturing process or facilities;

Previous wording

If the FDA, or a comparable foreign regulatory authority, requires approval (or certification or clearance) of a companion diagnostic for any of our product candidates, whether before or after the product candidate obtains marketing approval, we and/or third-party collaborators may encounter difficulties in developing and obtaining approval (or clearance, or certification) for these companion diagnostics. Any delay or failure by us or third-party collaborators to develop or obtain regulatory approval (or clearance, or certification) of a companion diagnostic could delay or prevent approval or continued marketing of our related product candidates. We, or our collaborators, may also experience delays in developing a sustainable, reproducible, and scalable manufacturing process for the companion diagnostic or in transferring that process to commercial partners or negotiating insurance reimbursement plans, all of which may prevent us from completing our clinical trials or commercializing our product candidates, if approved, on a timely or profitable basis, if at all.

Current wording

If the FDA, or a comparable foreign regulatory authority, requires approval (or certification or clearance) of a companion diagnostic for any of our product candidates, whether before or after the product candidate obtains marketing approval, we and/or third-party collaborators may encounter difficulties in developing and obtaining approval (or clearance, or certification) for these companion diagnostics. Any delay or failure by us or third-party collaborators to develop or obtain regulatory approval (or clearance, or certification) of a companion diagnostic could delay or prevent approval or continued marketing of our related product candidates. We, or our collaborators, may also experience delays in developing a sustainable, reproducible, and scalable manufacturing process for the companion diagnostic or in transferring that process to commercial partners or obtaining coverage and adequate reimbursement from third-party payors, all of which may prevent us from completing our clinical trials or commercializing our product candidates, if approved, on a timely or profitable basis, if at all. Even if the related therapeutic product receives coverage and reimbursement, lack of coverage or adequate reimbursement for a required companion diagnostic could reduce testing, limit the identification of eligible patients and materially reduce demand for and sales of the related product candidate, if approved.

Previous wording

We have received Regenerative Medicine Advanced Therapy (RMAT) designation for cema-cel, ALLO-316, and ALLO-715 and fast track designation for ALLO-316 and ALLO-329. There is no assurance that we will be able to obtain RMAT designation or fast track designation for any of our additional product candidates. RMAT designation and fast track designation do not change the FDA’s standards for product approval, and there is no assurance that such designation will result in expedited review or approval or that the approved indication will not be narrower than the indication covered by the designation. Additionally, RMAT designation and fast track designation can be revoked if the criteria for eligibility cease to be met as clinical data emerges.

Current wording

We have received Regenerative Medicine Advanced Therapy (RMAT) designation for cema-cel, ALLO-316, and ALLO-715 and fast track designation for cema-cel, ALLO-316 and ALLO-329. There is no assurance that we will be able to obtain RMAT designation or fast track designation for any of our additional product candidates. RMAT designation and fast track designation do not change the FDA’s standards for product approval, and there is no assurance that such designation will result in expedited review or approval or that the approved indication will not be narrower than the indication covered by the designation. Additionally, RMAT designation and fast track designation can be revoked if the criteria for eligibility cease to be met as clinical data emerges.

Previous wording

In addition, given the novel nature of gene-editing and cell therapy technologies, governments may place import, export or other restrictions in order to retain control or limit the use of the technologies. For instance, any limits on exporting certain of our technology to China may adversely affect Overland Therapeutics, a joint venture between us and HBP. Increased negative public opinion or more restrictive government regulations either in the United States or internationally, would have a negative effect on our business or financial condition and may delay or impair the development and commercialization of our product candidates or demand for such product candidates.

Current wording

In addition, given the novel nature of gene-editing and cell therapy technologies, governments may place import, export or other restrictions in order to retain control or limit the use of the technologies. Increased negative public opinion or more restrictive government regulations either in the United States or internationally, would have a negative effect on our business or financial condition and may delay or impair the development and commercialization of our product candidates or demand for such product candidates.

Previous wording

The use of engineered T cells as a potential cancer treatment is a recent development and may not become broadly accepted by physicians, patients, hospitals, cancer treatment centers and others in the medical community. We expect physicians in the large bone marrow transplant centers to be particularly important to the market acceptance of our products and we may not be able to educate them on the benefits of using our product candidates for many reasons. For example, certain of the product candidates that we will be developing target a cell surface marker that may be present on cancer cells as well as non-cancerous cells. It is possible that our product candidates may kill these non-cancerous cells, which may result in unacceptable side effects, including death. Additional factors will influence whether our product candidates are accepted in the market, including:

Current wording

The use of engineered T cells as a potential cancer treatment is a recent development and may not become broadly accepted by physicians, patients, hospitals, cancer treatment centers and others in the medical community. We expect physicians in the large bone marrow transplant centers and community cancer centers to be particularly important to the market acceptance of our products and we may not be able to educate them on the benefits of using our product candidates for many reasons. For example, certain of the product candidates that we will be developing target a cell surface marker that may be present on cancer cells as well as non-cancerous cells. It is possible that our product candidates may kill these non-cancerous cells, which may result in unacceptable side effects, including death. Additional factors will influence whether our product candidates are accepted in the market, including:

Previous wording

Patients who are provided medical treatment for their conditions generally rely on third-party payors to reimburse all or part of the costs associated with their treatment. Obtaining coverage and adequate reimbursement from third-party payors is critical to new product acceptance.

Current wording

Patients who are provided medical treatment for their conditions generally rely on third-party payors to reimburse all or part of the costs associated with their treatment. Obtaining coverage and adequate reimbursement from third-party payors is critical to new product acceptance. For any product candidate whose use depends on a companion diagnostic or other required test, commercial adoption will also depend on coverage and adequate reimbursement for that diagnostic or test. Coverage of the therapeutic product alone may be insufficient if patients or providers cannot obtain or afford the required testing.

Previous wording

In addition to the protection afforded by patents, we seek to rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is not patentable, processes for which patents are difficult to enforce and any other elements of our product discovery and development processes that involve proprietary know-how, information or technology that is not covered by patents. Trade secrets, however, may be difficult to protect. Although we require all of our employees to assign their inventions to us, and require all of our employees and key consultants who have access to our proprietary know-how, information, or technology to enter into confidentiality agreements, we cannot be certain that our trade secrets and other confidential proprietary information will not be disclosed or inappropriately used, or that competitors will not otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. Furthermore, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws of the United States. For example, we have and may continue to transfer technology to Overland Therapeutics or its affiliates in certain developing countries, and we cannot be certain that we or Overland Therapeutics or any of its affiliates will be able to protect or enforce any proprietary rights in these countries. As a result, we may encounter significant problems in protecting and defending our intellectual property both in the United States and abroad. If we are unable to prevent unauthorized material disclosure of our intellectual property to third parties, we will not be able to establish or maintain a competitive advantage in our market, which could materially adversely affect our business, operating results and financial condition.

Current wording

In addition to the protection afforded by patents, we seek to rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is not patentable, processes for which patents are difficult to enforce and any other elements of our product discovery and development processes that involve proprietary know-how, information or technology that is not covered by patents. Trade secrets, however, may be difficult to protect. Although we require all of our employees to assign their inventions to us, and require all of our employees and key consultants who have access to our proprietary know-how, information, or technology to enter into confidentiality agreements, we cannot be certain that our trade secrets and other confidential proprietary information will not be disclosed or inappropriately used, or that competitors will not otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. Furthermore, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws of the United States. For example, we have transferred technology to Overland Therapeutics or its affiliates in certain developing countries, and we cannot be certain that we or Overland Therapeutics or any of its affiliates will be able to protect or enforce any proprietary rights in these countries. As a result, we may encounter significant problems in protecting and defending our intellectual property both in the United States and abroad. If we are unable to prevent unauthorized material disclosure of our intellectual property to third parties, we will not be able to establish or maintain a competitive advantage in our market, which could materially adversely affect our business, operating results and financial condition.
Rearranged current paragraphs (1)

Current report — wording carried from elsewhere

In addition, even if we believe the results are sufficiently compelling, such as for the ALPHA3 trial, including if the planned interim EFS analysis meets a prespecified efficacy boundary or otherwise yields statistically significant results, the
Rearranged previous paragraphs (1)

Previous report — wording carried elsewhere

For instance, if we introduce changes to the manufacturing of our product candidates, regulatory authorities may require additional studies or clinical data to support the changes, which could delay our clinical trial timelines. Additionally, even if such regulatory authorities agree with the design and implementation of the clinical trials set forth in an IND, IND amendment or clinical trial application, we cannot guarantee that such regulatory authorities will not change their requirements in the future.