10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-K

☒ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2023

OR

☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______

Commission File Number 001-33038

Alaunos Therapeutics, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware	84-1475642
(State or Other Jurisdiction of Incorporation or Organization)	(IRS Employer Identification No.)
2617 Bissonnet Street, Suite 225 Houston, TX	77005
(Address of Principal Executive Offices)	(Zip Code)

(346) 355-4099

(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	TCRT	The Nasdaq Capital Market

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☑

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes ☐ No ☑

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☑ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of “large accelerated filer,” “accelerate filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer	☐	Accelerated Filer	☐
Non- Accelerated Filer	☑	Smaller Reporting Company	☑
		Emerging Growth Company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☑

The aggregate market value of the registrant’s common stock held by non-affiliates was $94,764,946 as of June 30, 2023 (the last business day of the registrant’s most recently completed second fiscal quarter), based on a total of 16,041,804 shares of common stock held by non-affiliates and a closing price of $7.65 as reported on the Nasdaq Capital Market on June 30, 2023. For purposes of this computation, all officers, directors, and 10% beneficial owners of the registrant are deemed to be affiliates. Such determination should not be deemed to be an admission that such officers, directors or 10% beneficial owners are, in fact, affiliates of the registrant.

As of March 27, 2024, there were 16,012,479 shares of the registrant’s common stock, $0.001 par value per share, outstanding.

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DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Proxy Statement for the Registrant's 2024 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K.

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Alaunos Therapeutics, Inc.

ANNUAL REPORT ON FORM 10-K

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2023

TABLE OF CONTENTS

		Page
PART I
Item 1.	Business		7
Item 1A.	Risk Factors		27
Item 1B.	Unresolved Staff Comments		52
Item IC.	Cybersecurity		53
Item 2.	Properties		53
Item 3.	Legal Proceedings		53
Item 4.	Mine Safety Disclosures		54
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		55
Item 6.	[Reserved]		55
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		56
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk		65
Item 8.	Financial Statements and Supplementary Data		66
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosures		66
Item 9A.	Controls and Procedures		66
Item 9B.	Other Information		67
Item 9C	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections		67
PART III
Item 10.	Directors, Executive Officers and Corporate Governance		68
Item 11.	Executive Compensation		68
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		68
Item 13.	Certain Relationships and Related Transactions, and Director Independence		68
Item 14.	Principal Accountant Fees and Services		68
PART IV
Item 15.	Exhibits and Financial Statement Schedules		69
Item 16.	Form 10-K Summary		72
	Signatures		73
	Financial Statements		F-1

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K, or Annual Report, contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended. Forward-looking statements are all statements contained in this Annual Report that are not historical fact, and in some cases can be identified by terms such as: “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “intend,” “may,” “plan,” “project,” “target,” "potential," “will” and other words and terms of similar meaning.

These statements are based on management’s current beliefs and assumptions and on information currently available to management. These statements involve risks, uncertainties and other factors that may cause actual results, levels of activity, performance or achievements to be materially different from the information expressed or implied by these forward-looking statements. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we caution you that these statements are based on a combination of facts and factors currently known by us and our projections of the future, about which we cannot be certain. Forward-looking statements in this Annual Report include, but are not limited to, statements about:

•our ability to successfully implement our strategic reprioritization or realize any or all of the anticipated benefits once implemented;

•our ability to raise substantial additional capital to continue as a going concern and fund our planned operations in the near term and our strategic reprioritization in the longer term;

•our ability to successfully consummate any strategic transactions, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions;

•estimates regarding our expenses, use of cash, timing of future cash needs and anticipated capital requirements;

•our ability to license additional intellectual property to support our strategic reprioritization or out-license our intellectual property and to comply with our existing license agreements;

•our ability to enter into partnerships or strategic collaboration agreements and our ability to achieve the results and potential benefits contemplated from relationships with collaborators;

•our ability to maintain collaborations and licenses;

•our expectation of developments and projections relating to competition from other pharmaceutical and biotechnology companies or our industry;

•the anticipated amount, timing and accounting of contract liabilities, milestones and other payments under licensing, collaboration or acquisition agreements, research and development costs and other expenses;

•our ability to remain listed on the Nasdaq Capital Market; and

•our intellectual property position, including the strength and enforceability of our intellectual property rights.

Any forward-looking statements in this Annual Report on Form 10-K reflect our current views with respect to future events or to our future financial performance and involve known and unknown risks, uncertainties and other factors that may cause our actual results, level of activity, performance or achievements to be materially different from any future results, level of activity, performance or achievements expressed or implied by these forward-looking statements. Factors that may cause actual results, levels of activity or performance of achievements to differ materially from current expectations include, among other things, those described under Part I, Item 1A, “Risk Factors” and elsewhere in this Annual Report on Form 10-K. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.

Unless the context requires otherwise, references in this Annual Report to “Alaunos,” the “Company,” “we,” “us” or “our” refer to Alaunos Therapeutics, Inc.

We own or have rights to trademarks, service marks and trade names that we use in connection with the operation of our business, including our corporate name, logos and website names. We own the trademarks Alaunos®, hunTR®, and Ziopharm® as well as the graphic trademark found on our website. Other trademarks, service marks and trade names appearing in this Annual Report on Form 10-K are the property of their respective owners. Solely for convenience, some of the trademarks, service marks and trade names referred to in this Annual Report on Form 10-K are listed without the ® and ™ symbols, but we will assert, to the fullest extent under applicable law, our rights to our trademarks, service marks and trade names.

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SUMMARY OF SELECTED RISKS ASSOCIATED WITH OUR BUSINESS

Our business faces significant risks and uncertainties. If any of the following risks are realized, our business, financial condition, results of operations, cash flows and prospects could be materially and adversely affected. You should carefully review and consider the full discussion of our risk factors in the section titled “Risk Factors” in Part I, Item 1A of this Annual Report. Some of the more significant risks include the following:

•Our strategic reprioritization may not be successful, may not yield the desired results and we may be unsuccessful in identifying and implementing any strategic transaction.

•If a strategic transaction is not consummated, our Board of Directors may decide to pursue a dissolution and liquidation. In such an event, the amount of cash available for distribution to our stockholders will depend heavily on the timing of such liquidation as well as the amount of cash that will need to be reserved for commitments and contingent liabilities.

•We may require substantial additional financial resources to continue as a going concern, including through the strategic review process, and if we raise additional funds it may affect the value of your investment in our common stock.

•Our ability to consummate a strategic transaction depends on our ability to retain our current employees and consultants.

•Our corporate restructuring and the associated headcount reduction may not result in anticipated savings, could result in total costs and expenses that are greater than expected and could significantly disrupt our business.

•We may become involved in litigation, including securities class action litigation, that could divert management’s attention and harm our business, and insurance coverage may not be sufficient to cover all costs and damages.

•We received a Delisting Determination from Nasdaq in 2023 that while we have addressed with our recent reverse stock split and stock price trends, we remain subject to panel monitoring until February 2025, at any time during which we could be delisted again if we again fail to comply with the Minimum Bid Price Rule. Delisting could prevent us from maintaining an active, liquid and orderly trading market for our common stock and may impact our ability to consummate certain strategic transactions.

•We do not have approval by our shareholders for a second reverse stock split of our common stock to enable the Board of Directors to respond to a Panel if we fail to comply with the Minimum Bid Price Rule during the monitor period.

•Even if we do get approval and effectuate a second reverse stock split, the trading price of our common stock may not meet the Minimum Bid Price Rule.

•In light of the recent reverse stock split, or if we implement a second reverse stock split during the monitor period, liquidity of our common stock may be materially and adversely affected.

•We may identify material weaknesses in the future or otherwise fail to maintain an effective internal controls system, which may result in material misstatements of our financial statements or have a material adverse effect on our business or stock price.

•The recent termination of our licenses and research and development agreement with the National Cancer Institute could limit our ability to resume our clinical trial or begin new clinical trials focused on TCR-T.

•Any termination of our licenses with Precigen or MD Anderson or our research and development agreements with MD Anderson could result in the loss of significant rights and could materially harm our ability to develop and commercialize our product candidates.

•Should we resume development of our product candidates, we may not be able to commercialize them, generate significant revenues, or attain profitability.

•We may incur substantial liabilities and may be required to limit commercialization of our products in response to product liability lawsuits.

•We relied and, should we in the future resume development of our product candidates, will rely significantly on information technology and any failure, inadequacy, interruption or security lapse of that technology or loss of data, including any cybersecurity incidents, could compromise sensitive information related to our business, prevent us from accessing critical information or expose us to liability which could harm our ability to operate our business effectively and materially and adversely affect our business and reputation.

•Should we resume development of our product candidates, we may encounter difficulties enrolling patients in our clinical trials, and our clinical development activities could be delayed or otherwise materially and adversely affected.

•Our product candidates are subject to extensive regulation and compliance, which is costly and time consuming, and such regulation may cause unanticipated delays or prevent the receipt of the required approvals to commercialize our product candidates, should we resume development.

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•We have halted development of our product candidates early in our development efforts. Our most advanced product candidates were only in an early-stage clinical trial, which is very expensive and time-consuming. We cannot be certain if or when we will be able to submit a Biologics License Application, or BLA, to the U.S. Food and Drug Administration, or the FDA, and the delay, or any failure, in completing clinical trials for our product candidates could significantly harm our business.

•Our product candidates may cause undesirable side effects or have other properties that could delay or prevent their regulatory approval, limit the commercial profile of an approved label or result in significant negative consequences following any potential marketing approval.

•The gene transfer vectors from our Sleeping Beauty system used to manufacture our product candidates may incorrectly modify the genetic material of a patient’s T cells, potentially triggering the development of a new cancer or other adverse events.

•Should we resume development of our product candidates, any candidate for which we obtain marketing approval could be subject to post-marketing restrictions or withdrawal from the market and we may be subject to significant penalties if we fail to comply with regulatory requirements or if we experience unanticipated problems with our products, when and if any of them are approved.

•Should we resume development of our product candidates, our inability to obtain the necessary U.S. or worldwide regulatory approvals to commercialize any product candidate, our business will suffer materially.

•If we are unable either to create sales, marketing and distribution capabilities or enter into agreements with third parties to perform these functions, we will be unable to commercialize our product candidates successfully.

•If physicians and patients do not accept and use our product candidates, once approved, our ability to generate revenue from sales of our products will be materially and adversely impaired.

•Our ability to generate product revenues will be diminished if our products do not obtain coverage and adequate reimbursement from payors.

•The market opportunities for our product candidates may be limited to those patients who are ineligible for or have failed prior treatments and may be small.

•Our immuno-oncology product candidates may face competition in the future from biosimilars and/or new technologies and our pending patent applications may not be granted, further limiting our ability to compete with other companies.

•If we or our licensors fail to adequately protect or enforce our intellectual property rights or secure rights to patents of others, the value of our intellectual property rights would diminish and our ability to successfully commercialize our products may be materially impaired.

•Third-party claims of intellectual property infringement would require us to spend significant time and money and could prevent us from developing or commercializing our products.

•Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.

•Our stock price has been, and may continue to be, volatile.

•Anti-takeover provisions in our charter documents and under Delaware law may make an acquisition of us, which may be beneficial to our stockholders, more difficult.

•Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware will be the exclusive forum for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

•Because we do not expect to pay dividends, you will not realize any income from an investment in our common stock unless and until you sell your shares at a profit.

•Our ability to use net operating loss carryforwards and research tax credits to reduce future tax payments may be limited or restricted.

•The exercise of outstanding warrants, and issuance of equity awards may have a dilutive effect on our stock, and negatively and materially impact the price of our common stock.

•Our principal stockholders, executive officers and directors have substantial control over the Company, which may prevent you and other stockholders from influencing significant corporate decisions and may significantly harm the market price of our common stock.

•We are a “smaller reporting company,” and the reduced disclosure requirements applicable to smaller reporting companies may make our common stock less attractive to investors.

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PART I

Item 1. Business

Overview

We are a clinical-stage oncology-focused cell therapy company that was historically involved in developing adoptive T-cell receptor, or TCR, engineered T-cell therapies, or TCR-T, designed to treat multiple solid tumor types in large cancer patient populations with unmet clinical needs. We leveraged our cancer hotspot mutation TCR library and our proprietary, non-viral Sleeping Beauty gene transfer platform to design and manufacture patient-specific cell therapies that target neoantigens arising from common tumor-related mutations in key oncogenic genes, including KRAS, TP53 and EGFR. In collaboration with The University of Texas MD Anderson Cancer Center, or MD Anderson, we were enrolling and treating patients for a Phase 1/2 clinical trial evaluating 12 TCRs reactive to mutated KRAS, TP53 and EGFR from our TCR library for the investigational treatment of non-small cell lung, colorectal, endometrial, pancreatic, ovarian and bile duct cancers, which we refer to as our TCR-T Library Phase 1/2 Trial.

On August 14, 2023, the Company announced a strategic reprioritization of its business and wind down of its TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, the Company has reduced its workforce by approximately 95% to date and continues working to reduce costs in order to extend its cash runway. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. The Company has engaged Cantor Fitzgerald & Co., or Cantor, to act as strategic advisor for this process. Separately, the Company is evaluating several potential in-licensing opportunities in obesity, oncology and virology. In addition, on August 14, 2023, we announced that we had provided the requisite notice to the National Cancer Institute, or NCI, to terminate the Cooperative Research and Development Agreement, dated January 9, 2017, by and among us, the NCI and Intrexon Corporation, or Intrexon, as amended (such agreement referred to herein as the CRADA), pursuant to its terms, effective October 13, 2023.

Eight patients were treated and evaluated in our TCR-T Library Phase 1/2 Trial with three unique TCRs from our library, which targeted KRAS-G12D, TP5304175H, and KRAS-G12V hotspot mutations. Patients with pancreatic (3), colorectal (4) and non-small cell lung cancer (1) were treated, with certain pancreatic and colorectal patients also having lung metastases. Overall, the trial showed our T-cells were generally well-tolerated in all evaluable participants with no dose-limiting toxicities (DLTs) and no immune effector cell-associated neurotoxicity syndrome (ICANS) were observed. All cytokine release syndrome (CRS) events were within grades 1-3 and were self-limiting or resolved with standard clinical management and, in some cases, a single dose of tocilizumab.

One patient with non-small cell lung cancer (NSCLC) achieved an objective partial response with six months progression-free survival. Six other patients achieved a best overall response of stable disease. The total overall response rate was 13% and disease control rate was 87% in evaluable patients with advanced, metastatic, refractory solid tumors (see Figure A). Disease control was measured by objective responses and stable disease. Increased secretion of interferon-gamma relative to baseline was detected in all patients' serum post-cell transfer suggesting recognition of the tumor by the infused TCR-T cells. Persistence of TCR-T cells in peripheral blood was detected in all evaluable patients at their last follow-up, including up to six months in one patient. Infiltration of TCR-T cells into the tumor was also detected in three samples where a fresh biopsy was collected suggesting homing to the tumor microenvironment. All patients have progressed or withdrawn from the trial and long-term follow-up is ongoing for a subset of patients with no further intervention per the treatment protocol. This trial established proof-of-concept that Sleeping Beauty TCR-T cells can result in objective clinical responses and recognize established tumors in vivo.

Figure A

 

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Despite the encouraging TCR-T Library Phase 1/2 Trial data, based on the substantial cost to continue development and the current financing environment, we announced in August 2023 that we would not pursue any further development of our clinical programs.

In the United States, solid tumors represent approximately 90% of new cancer diagnoses. Approximately 2.0 million people are expected to be diagnosed with cancer in the United States in 2023 and approximately 610,000 people are expected to die from cancer in the United States in 2023. Some of the cancers we targeted in our TCR-T Library Phase 1/2 Trial are expected to be among the most prevalent cancers diagnosed in the United States in 2023. In 2023, it was estimated that 238,340 people were expected to be diagnosed with lung and bronchus cancer, 153,020 were expected to be diagnosed with colorectal cancer, 66,200 people were expected to be diagnosed with endometrial cancer, 64,050 people were expected to be diagnosed with pancreatic cancer, 19,710 people were expected be diagnosed with ovarian cancer and approximately 8,000 people were expected to be diagnosed with bile duct cancer. Mutations of the KRAS, TP53 and EGFR genes are commonly expressed across a wide variety of cancers.

Our TCR-T Library Phase 1/2 Trial Approach

The table below sets forth our multiple solid tumor pipeline programs.

 

Our TCR-T program targeting solid tumors consisted of:

•TCR Library: We built a TCR library that targets shared hotspot mutations known to be one of the key causes of cancer. These are non-inherited mutations. We in-licensed from the NCI multiple TCRs derived from third parties that are reactive to mutated KRAS, TP53 and EGFR.

•Sleeping Beauty Gene Transfer Platform: Our proprietary non-viral genetic engineering technology utilizes a particular enzyme referred to as a transposase to cut and paste donor DNA referred to as a transposon into chromosomes of a T cell using a process called transposition.

•hunTR® (human neoantigen T cell Receptor) Discovery Engine: Our robust and innovative TCR discovery engine enabled us to rapidly identify new TCRs to add to the TCR library. Using our hunTR discovery engine, we were able to analyze thousands of single T cells simultaneously using state-of-the-art bioinformatics and next generation sequencing. We aimed to maximize the breadth of our TCR library by evaluating both helper (CD4) and killer (CD8) T cells.

We believe our TCR-T program has several potential advantages over other cell therapy approaches for solid tumors, including CAR-T and tumor-infiltrating lymphocytes, or TIL. As compared to CAR-T, these potential advantages include that our TCR-T program targeted intracellular and extracellular neoantigens whereas CAR-T primarily targets extracellular antigens. As compared to TIL, these potential advantages include that our TCR-T program defined target specificity from the genetic engineering employed in manufacturing whereas in TIL specificity typically arises from the endogenous TCR rather than an introduced immunoreceptor.

Background on TCRs

Our strategy was to target the hallmark of genomic instability in cancer with TCRs. Genes in cancer cells can lead to the production of proteins, which are then processed by the cell into protein fragments known as peptides. These peptides are presented to T cells by a specialized set of molecules on the cancer cell surface called the human leukocyte antigen, or HLA, system. When peptide presentation occurs, and it results in T cell activation through the TCR, the peptides are known as antigens.

When these immunogenic peptides are derived from proteins which are in turn expressed from genes that are mutated only in tumor cells (for example, within the cancer genome and not encoded in the germline), they are known as neoantigens. Tumor cells presenting neoantigens via

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HLA are targets for T cells. T cells can recognize and kill neoantigen-presenting cancer cells. This approach is different from traditional CARs, which directly recognize antigens, such as CD19, on the surface of malignant B cells, without presentation by HLA.

In general, the immune system avoids targeting the body’s own healthy cells principally through processes known as immune tolerance by which T cells do not respond to HLA containing peptides from normal proteins. The recognition by the TCR of a peptide presented by the HLA system is a vital immune mechanism that allows the body both to respond against foreign threats, including cancer, as well as to avoid targeting the body’s own healthy cells.

Tumors utilize a variety of strategies to evade and suppress the host immune system. This often renders T cells residing within the tumor, referred to as TILs, ineffective and, despite expressing tumor-specific TCRs, unable to recycle their effector functions to kill tumors. To overcome immune suppression, healthier T cells are likely needed, such as those found in the peripheral blood. However, these circulating T cells do not typically express tumor-specific TCRs in adequate numbers.

Neoantigens are encoded by tumor-specific mutated genes that are often unique to each patient. Targeting these unique neoantigens requires TCRs that are generated on a patient-by-patient basis. During cancer initiation and progression, tumor cells acquire mutations in naturally occurring genes that are responsible for transformation, known as driver mutations. Some of these driver mutations occur in common places called hotspots and are a class of mutations shared between tumor types and between individuals. Since driver mutations can be anticipated, it is possible to prepare TCRs in advance of a patient’s need and form a library of banked TCRs.

Our Approach to Targeting Neoantigens

We believe that to be successful in treating solid tumors, genetically modified T cells targeting one or more neoantigens will likely need to address the fact that (1) among a population of patients, not all tumors express the targeted neoantigen, referred to as inter-tumor heterogeneity, and (2) within a single patient, not all tumor cells express the targeted antigen, referred to as intra-tumor heterogeneity. Inter-tumor heterogeneity limits the number of recipients that are eligible to receive a treatment and intra-tumor heterogeneity creates the risk of antigen-escape variants, increasing the likelihood of cancer relapse. As a result, we believe companies developing T cell therapies targeting neoantigens must address both inter- and intra-tumor heterogeneity.

We genetically modified peripheral blood-derived T cells to express TCRs with specificity to tumor-derived antigens, especially neoantigens, and propagated them to sufficient numbers prior to administration. We aimed to overcome the key challenges of targeting neoantigens by using DNA plasmids to reprogram T cells to express introduced TCRs on a patient-by-patient basis. This was designed to help address tumor heterogeneity.

Our TCR-T cells contained multiple different subsets of T cells, including effector and memory T cells. The effector T cells were associated with immediate anti-tumor activity. Memory T cells have greater growth potential relative to the effector T cells. Some of our TCR-T cells were T memory stem cells, which have been described to have the largest capacity for growth and renewal relative to other T-cell populations.

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Our TCR-T Manufacturing Process

The diagram below illustrates our manufacturing process for our TCR-T product candidates.

 

Our TCR-T approach focused on what we believed to be the most critical and prevalent tumor-specific targets in cancer. These target mutations, called hotspots, are prevalent in genes including KRAS, TP53 and EGFR, which can be found in non-small cell lung, colorectal, endometrial, pancreatic, ovarian and bile duct cancers in several different HLA alleles. These driver genes play a key role in regulating cell division, maturation and death, and mutations in these genes have been observed to play a critical role in the development of certain cancers. The advantage of our Library TCR-T approach was that subsets of patients with solid tumors could potentially be rapidly treated by screening them for targeted neoantigens (e.g., KRAS, TP53 and EGFR), identifying patient HLA, and matching these results to the TCRs in the library. Patients with a variety of different cancers (e.g., non-small cell lung, colorectal, endometrial, pancreatic, ovarian and bile duct cancers) could be screened for a match to our TCR library through tumor sequencing and identification of the patient’s tumor mutation and HLA typing. Once a match to our TCR library was confirmed, a portion of the patient’s white blood cells was collected through a peripheral blood leukapheresis and sent to our in-house current Good Manufacturing Practices, or cGMP, manufacturing facility in Houston, Texas.

Once the desired pre-manufactured TCR transposon was selected from our TCR library, we utilized our proprietary non-viral Sleeping Beauty genetic engineering technology to modify the patient’s T cells (both CD4+ and CD8+). We used T cells from peripheral blood, which have a younger and healthier phenotype relative to tumor-resident T cells, to generate our TCR-T cells. Given initial clinical cellular kinetics of the TCR-T cells in the patients treated to date, we believed these modified TCR-T cells would persist in the recipient following infusion. We observed in preclinical studies that genetic engineering of T cells by our Sleeping Beauty technology resulted in the rapid and stable expression of the introduced neoantigen-specific TCR. The genetically modified T cells expressing high levels of the TCR were expanded to produce the patient-specific, or autologous, TCR-T cell product. The product candidate was then harvested from the manufacturing process, formulated, cryopreserved, transferred to the hospital facility and infused in the patient after thawing.

Benefits of Our Non-Viral Sleeping Beauty Gene Transfer Platform

Our Sleeping Beauty gene transfer platform provides several benefits, including those described below.

•Scalability and Reduction in Complexity. The Sleeping Beauty technology is a straightforward means to manufacture a large number of autologous T-cell products. The technology requires only the synthesis of DNA plasmids as the starting material for genetic engineering of the T cells. In contrast, traditional viral gene transfer is more complex and requires specialized manufacturing of each viral vector(s) of interest. Production of a viral vector starts with the generation of plasmid DNA with the transgene of interest. This plasmid is then introduced into a packaging cell line and viruses are secreted into the media over a couple of days. This process is inherently more complex to scale with the numbers of cells and associated media required relative to Sleeping Beauty, which only requires the plasmid DNA. Genetic modification of the patient cells using the Sleeping Beauty technology is accomplished through electroporation with the DNA plasmids and subsequent culture, selection and growth of the T cells to large numbers using traditional manufacturing techniques. This simple process can be scaled through the addition of manufacturing lines.

•Customizable Therapies. We believe our Sleeping Beauty platform provided us with the ability to manufacture more customizable therapies. The platform enabled a library of TCRs to be assembled and used in cells to recognize diverse mutations within shared

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neoantigens and address a multitude of HLA types. We believe this could enable both our Library TCR-T approach against shared cancer targets as well as personalized TCR therapies against unique, and potentially multiple, personal neoantigens. We believe multiplexing TCR-T cells, which involves infusing a patient with more than one TCR product, would be best enabled by our Sleeping Beauty system and through our unique TCRs and expanding TCR library.

•Potential Clinical Benefits. We believe the anti-tumor activity of our TCR-T cells have the potential to last as long as the TCR-T cells persist and proliferate following the recognition of the neoantigen on the tumor cell surface. This may lead to durable and progressively greater clinical response in patients. In CAR-T cell products generated in human cells, Sleeping Beauty transposons were observed to integrate in a close-to-random distribution at thymine-adenine, or TA, dinucleotide sites, which increases the likelihood of insertion in a genomic safe harbor, thereby making them less likely to cause off-target effects when compared to other transposons and viral gene delivery methods. We also believe that including membrane-bound interleukin-15, or mbIL-15, in TCR-T cells can provide additional benefits. In particular, we have observed that T cells modified to express mbIL-15 as well as a TCR show increased potential for stemness corresponding with a potential ability to persist longer in the patient after infusion.

•Accommodation of Large Transgene Size. Plasmids manufactured using our Sleeping Beauty platform have a large enough payload size to allow for genetic engineering of both the TCR as well as insertion of a gene encoding for the expression of cytokines, such as mbIL-15. This facilitates uniformly high co-expression of both the TCR and cytokine on a single integrated gene.

Preclinical and Clinical Development

Preclinical Development of our TCR-T Product Candidates

We independently evaluated all the TCRs we had licensed from NCI using our Sleeping Beauty platform. Candidate TCRs for clinical translation were selected based on conventional in vitro immunological measurements. We presented these data at the 2021 American Association for Cancer Research (AACR) and Society for Immunotherapy of Cancer (SITC) annual meetings. We selected the TCRs based, in part, on their ability to express on the T cell surface and then specifically recognize the mutated target without also targeting healthy cells. For those TCRs that are destined for killer T cells, our preclinical data suggested that those TCR-T cells could kill the appropriate tumor cell lines expressing the target neoantigen. In our preclinical studies, we also observed TCR-T cells killed significantly more tumor cells when matched with the corresponding HLA and neoantigen relative to mismatched tumor cells and relative to mismatched T cells not expressing the relevant neoantigen-specific TCR.

Selected formerly licensed TCRs were co-expressed with mbIL-15 on T cells. This was accomplished with the transfer of a single transposon to deliver three independent genes (TCRalpha, TCRbeta, mbIL-15) to the T cell. We optimized the orientation order of these three genes and the growth conditions specific for the generation of mbIL-15 TCR-T cells. Using similar standard immunologic readouts described above, the mbIL-15 TCR-T cells were observed to display a similar specificity and potency profile to conventional TCR-T cells; however, we observed increased in vitro survival of mbIL-15 TCR-T cells in the absence of all added support relative to TCR-T cells, especially in the T memory stem cell populations. We filed an international patent application around these findings and presented preclinical data from this program at the American Society of Gene & Cell Therapy conference in 2022. We believe mbIL-15 has the potential to increase the survival of TCR-T cells in the harsh tumor microenvironment and deepen clinical responses.

TCR-T Library Phase 1/2 Trial

In February 2021, we received FDA clearance for our company-sponsored IND to initiate a Phase 1/2 open-label, dose-escalation trial which was initially being conducted at MD Anderson. In January 2022, after screening patients, we opened enrollment in our TCR-T Library Phase 1/2 Trial and expected to enroll up to 180 adults during the course of the trial. We only enrolled patients who had a matched HLA and hotspot mutation that was targeted by one of the TCRs from our TCR library, who had progressive or recurrent solid tumors and who had failed at least one prior line of standard therapy. The trial was evaluating the 12 TCRs that were in our library that targeted neoantigens arising from KRAS, TP53 and EGFR mutations in patients across a broad range of solid tumors that include non-small cell lung, colorectal, endometrial, pancreatic, ovarian, and bile duct cancers, all in a single trial. We intended to use our hunTR discovery engine in an effort to add new TCRs to the library and clinical program as they were qualified by our laboratory. The patients were enrolled in cohorts according to their cancer at three separate dose levels. The Phase 1 primary endpoint was to define dose limiting toxicity or the recommended maximum tolerated dose for a subsequent clinical trial. The primary endpoints for the Phase 2 portion of the trial was expected to determine the objective response rate and otherwise evaluate safety and tolerability. We were also monitoring TCR-T cell persistence and performing multiple conventional immune monitoring assays in the clinical trial to evaluate their persistence in patients. As of December 31, 2023, we have enrolled and dosed 8 patients.

We presented information on the first two patients treated in September 2022 at the CRI-ENCI-AACR International Cancer Immunotherapy Conference, or CICON. The first patient we treated had lung adenocarcinoma with multiple lines of prior therapy and was refractory to checkpoint inhibitors. The second patient we treated was diagnosed with colon cancer and had received multiple lines of standard prior therapies. We successfully dosed a third patient who was diagnosed with advanced pancreatic cancer refractory to multiple lines of standard therapy in our TCR-T Library Phase 1/2 Trial in December 2022. We performed translational assessments to assess the biological activity of our TCR-T cells in order to guide next generation TCR-T therapy approaches including potential combination and multiplexed TCR-T cell

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therapies. We believe that these data provided early clinical validation of the potential of Sleeping Beauty TCR-T cell therapy in high value indications with significant unmet need.

•All patients treated demonstrated manageable safety profiles with no dose limiting toxicities, or DLTs, or immune effector cell-associated neurotoxicity syndrome;

•Persistence of the TCR-T cells has been observed. Patient 1 had persistence at 24 weeks with approximately 30% of the patient's total CD3+ T cells comprising TCR-T cells in peripheral blood after treatment with KRAS-G12D/HLA-A*11:01 mutation-specific TCR-T cells at dose level 1 (9x109 cells). Patient 2 had persistence at 12 weeks with approximately 20% of the patient's total CD3+ T cells comprising TCR-T cells in peripheral blood after treatment with TP53-R175H/HLA-A*02:01 mutation-specific TCR-T cells at dose level 2 (64x109 cells).

•Demonstrating six month progression-free survival, Patient 1 had a best overall response of objective, partial response with regression of greater than 50% of target lesions at 12 weeks post-cell therapy. Patient 2 had a best overall response of stable disease at six weeks with 12 week progression-free survival. Progressive disease was observed in Patient 1 and Patient 2 at weeks 24 and 12, respectively, and each patient subsequently went off study;

•The targeted mutations, KRAS-G12D and TP53-R175H, were detected in respective progressing tumor biopsies suggesting no antigen loss; and

•Tumor homing was observed in Patient 1 with infiltration of both CD4 and CD8 TCR-T cells six months post-TCR-T cell therapy.

To our knowledge, achievement of an objective clinical response resulting from treatment with KRAS-G12D and HLA-A*11:01 specific TCR-T cells had not been reported until Patient 1 in our TCR-T Library Phase 1/2 Trial. Patient 1’s infusion product was high quality with 97.3% viability, 99.7% CD3+ purity and 95.2% TCR positivity. Patient 1’s target lesions were reduced compared to baseline by 46% at six weeks, 51% at 12 weeks and 46% at 24 weeks. At six months following treatment, an elective tumor biopsy of non-measurable disease in the right lung showed continued presence of tumor cells, KRAS-G12D mutation and HLA-A*11:01 allele, and progressive disease was corroborated by another elective scan at seven months. Patient 1 is now off trial and is being monitored as part of our long-term follow-up protocol.

Patient 2's treatment was the first-in-human Sleeping Beauty TCR-T cell therapy targeting TP53 hotspot mutations and was generally well tolerated. The same TCR used by the NCI to treat breast cancer, which resulted in a 6-month confirmed, objective partial response, was used to treat Patient 2. Patient 2 received highly pure TCR-T cells (92.5% viability, 99% CD3+ purity, and 92% TCR positivity). Reduction of target lesions by 15% from baseline was observed at six weeks post-infusion, but we observed 21.8% growth of lesions from the week six measurements and appearance of new liver and lung metastases at week 12 signaled progressive disease in Patient 2, who was removed from the trial as a result of such progression.

In the fourth quarter of 2022, we submitted an IND amendment to the FDA to add two new TCRs to our clinical trial targeting frequent mutations and HLAs, with the potential to double the addressable market of our TCR-T Library Phase 1/2 Trial. In over 700 patients screened at MD Anderson Cancer Center with gastrointestinal or lung tumors, we improved our match rate from 5% to over 10%, including roughly one in five patients matching two TCRs in the library. The addition of these new TCRs highlighted our strategy to add both more HLAs to existing mutations (KRAS-G12V and HLA-DRB1*07:01) and new mutations within our targeted gene families (TP53-R273C and HLA-DPB1*04:02). The IND amendment also combined our treatment and screening protocols, streamlining enrollment and potentially making it easier for both patients and physicians. The amended IND also eliminated the requirement for retesting of the tumor mutation if six months had passed between screening and treatment.

Manufacturing

In 2023, Our cGMP facility in Houston, Texas was staffed by Alaunos personnel and was fully operational for manufacturing TCR T-cells genetically modified with our Sleeping Beauty gene transfer platform for our early-stage clinical trials. We relied on third parties for the production of the DNA plasmids used in manufacturing our product candidates. We closed our cGMP facility in Houston in November 2023 and laid off all manufacturing personnel by September 2023.

Our Library TCR-T approach allowed us to streamline the T cell manufacturing process by pre-manufacturing DNA plasmids corresponding to each of our qualified library TCRs. These TCRs were then utilized in the manufacturing for the patient-specific, autologous TCR-T product candidates. Our in-house TCR-T manufacturing facility also allowed us to integrate our research and development capabilities, potentially reducing the time from discovery to treating patients in a clinical trial. This integration was designed to minimize delays and reduce risks that can be encountered in drug development, including the failure of third parties to successfully produce the desired product, long technology transfer periods and long lead times for orders. We doubled our manufacturing capacity in 2022, allowing for production of two products simultaneously. We also filed an IND amendment to move from fresh to cryopreserved product and began implementing this change in the first half of 2023. The use of cryopreserved cell products was expected to reduce manufacturing process time from 30 days to 26 days, a 13% decrease, while increasing flexibility for patient scheduling and treatment.

IL-12 Program

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As we announced in May 2021, we are winding down our existing Controlled IL-12 clinical program for the treatment of recurrent glioblastoma multiforme. On April 4, 2023, we returned the IL-12 assets to Precigen, Inc. via the parties' Amended and Restated Exclusive License Agreement.

Intellectual Property

Our goal is to obtain, maintain and enforce patent and trade secret protection for our product candidates, formulations, processes, methods and other proprietary technologies. We strive to preserve our trade secrets and other confidential information and to operate without infringing the proprietary rights of other parties. Our policy is to actively seek the strongest possible intellectual property protection for our technology and product candidates through a combination of license agreements and owned patents, both in the United States and abroad.

Owned Patents

As of December 31, 2023, we have six families of pending patent applications that cover our TCR-T library, products and processes. We do not currently own any granted patents.

Patent terms extend for varying periods according to the date of patent filing or grant and the legal patent terms in the various countries where patent protection is obtained. The actual protection offered by a patent, which can vary from country to country, depends on the type of patent, the scope of its coverage, the issued claims and the availability of legal remedies in the country.

Pursuant to the Drug Price Competition and Patent Term Restoration Act of 1984, referred to as the Hatch-Waxman Amendments, some of our patents, under certain conditions, may be eligible for limited patent term extension for a period of up to five years as compensation for patent term lost during drug development and the FDA regulatory review process. However, this extension period cannot be extended beyond 14 years from the drug’s approval date. The patent term restoration period is generally one-half the period of time elapsed between the effective date of an IND application or the issue date of the patent, whichever is later. The submission date of a New Drug Application, or NDA, plus the period of time between the submission date of the NDA or the issue date of the patent, whichever is later, and FDA approval. The United States Patent and Trademark Office, or USPTO, in consultation with the FDA, reviews and approves applications for any patent term extension or restoration. We intend to seek the benefits of this statute, but there can be no assurance that we will be able to obtain any such benefits.

We also depended upon the skills, knowledge and experience of our scientific and technical employees, as well as those of our advisors, consultants, and other contractors, none of which may be patentable. To help protect unpatentable proprietary know-how, and for inventions for which patents may be difficult to enforce, we currently rely, and in the future, will continue to rely, on trade secret protection and confidentiality agreements to protect our interests. To this end, we generally require employees, consultants, advisors and other contractors to enter into confidentiality agreements that prohibit the disclosure of confidential information and, where applicable, require disclosure and assignment to us of the ideas, developments, discoveries and inventions important to our business.

Our patent position and proprietary rights are subject to certain risks and uncertainties. Please read Item Ia. Risk Factors—“Risks Related to Our Intellectual Property” section for further information about certain risks and uncertainties that may affect our patent position and proprietary rights.

License Agreements

Exclusive License Agreement with PGEN Therapeutics

On October 5, 2018, we entered into an exclusive license agreement, or License Agreement, with PGEN Therapeutics, or PGEN, a wholly owned subsidiary of Precigen Inc., or Precigen, which was formerly known as Intrexon Corporation. Pursuant to the terms of the License Agreement, we had exclusive, worldwide rights to research, develop and commercialize (i) TCR products designed for neoantigens for the treatment of cancer, (ii) products utilizing Precigen’s RheoSwitch® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products and (iii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) BCMA for the treatment of cancer, subject to certain obligations to pursue such target under the License and Collaboration Agreement effective March 27, 2015 between us, Precigen and ARES TRADING S.A., a subsidiary of Merck KGaA, as assigned by Precigen to PGEN. Under the License Agreement, we also have exclusive, worldwide rights for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR products for both neoantigens and shared antigens for the treatment of cancer, referred to as TCR Products. We were solely responsible for all aspects of the research, development and commercialization of the exclusively licensed products for the treatment of cancer as well as required to use commercially reasonable efforts, as defined in the License Agreement, to develop and commercialize IL-12 products, CD19 products and TCR Products. The License Agreement required us to pay PGEN an annual license fee of $0.1 million and reimburse PGEN for certain historical costs of the licensed programs. We were required to make milestone payments totaling up to an additional $52.5 million for each exclusively licensed program upon the initiation of later stage clinical trials and upon the approval of exclusively licensed products in various jurisdictions and pay PGEN tiered royalties ranging from low-single digit to high-single digit on the net sales derived from the sales of any approved IL-12 products and CAR products. We were also to pay PGEN royalties ranging from low-single digit to mid-single digit on the net sales derived from the sales of any approved TCR products, up to a maximum royalty amount of

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$100.0 million in the aggregate, 0% of any sublicensing income received by us relating to the licensed products, and fund development costs associated with each of the licensed products.

PGEN was required to pay us royalties ranging from low-single digits to mid-single digits on the net sales derived from the sale of PGEN’s CAR products, up to a maximum royalty amount of $100.0 million. In October 2020, we entered into an amendment to the License Agreement relating to the transfer of certain materials and PGEN’s obligations to provide transition assistance relating to the IL-12 products.

In April 2023, we amended and restated the License Agreement by entering into the Amended and Restated License Agreement, or A&R License, which replaces in its entirety the License Agreement. We returned all rights to the CAR-T and IL-12 programs to Precigen. We were granted, royalty-free, an exclusive, worldwide, sublicensable rights to research, develop and commercialize TCR products designed for neoantigens for the treatment of cancer. We are required to pay Precigen a $75,000 annual license payment.

License Agreement and 2015 Research and Development Agreement-The University of Texas MD Anderson Cancer Center

On January 13, 2015, we, together with Precigen, entered into that certain license agreement, or the MD Anderson License, with MD Anderson (which Precigen subsequently assigned to PGEN). Pursuant to the MD Anderson License, we, together with PGEN, hold an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR T-cell therapies, non-viral gene transfer systems, genetic modification and/or propagation of immune cells and other cellular therapy approaches, Natural Killer, or NK Cells, and TCRs, arising from the laboratory of Laurence Cooper, M.D., Ph.D. Dr. Cooper served as our Chief Executive Officer from May 2015 until February 2021 and was formerly a tenured professor of pediatrics at MD Anderson.

On August 17, 2015, the Company, Precigen and MD Anderson entered into the Research and Development Agreement, or the 2015 R&D Agreement, to formalize the scope and process for the transfer by MD Anderson, pursuant to the terms of the MD Anderson License, of certain existing research programs and related technology rights, as well as the terms and conditions for future collaborative research and development of new and ongoing research programs. The rights and obligations of Precigen under the 2015 R&D Agreement were assigned to us pursuant to the Fourth Amendment to the 2015 R&D Agreement which was entered into on September 19, 2019, or the Fourth Amendment, with an effective date of October 5, 2018. The activities under the 2015 R&D Agreement are directed by a joint steering committee comprised of two members from our company and one member from MD Anderson.

As provided under the MD Anderson License, we provided funding for research and development activities in support of the research programs under the 2015 R&D Agreement for a period of three years and in an amount of no less than $15.0 million and no greater than $20.0 million per year. On November 14, 2017, we entered into an amendment to the 2015 R&D Agreement extending its term until April 15, 2021 and on October 22, 2019, we entered into another amendment to the 2015 R&D Agreement extending its term until December 31, 2026 and to allow cash resources on hand at MD Anderson under the 2015 R&D Agreement to be used for development costs under the 2019 Research and Development Agreement, or the 2019 R&D Agreement, which we entered into on October 22, 2019, with MD Anderson, pursuant to which we agreed to collaborate with respect to the TCR program.

The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder, or (b) the twentieth anniversary of the date of the MD Anderson License; provided, however, that following the expiration of the term of the MD Anderson License, we, together with Precigen, shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder. After ten years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if we and Precigen are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third-party contract if we and Precigen are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by us and Precigen, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both us and Precigen and may be terminated by the mutual written agreement of us, Precigen, and MD Anderson.

2019 Research and Development Agreement-The University of Texas MD Anderson Cancer Center

Under the 2019 R&D Agreement, we and MD Anderson will, among other things, collaborate on programs to expand our TCR library and conduct clinical trials. The activities under the 2019 R&D Agreement are directed by a joint steering committee comprised of two members from our company and one member from MD Anderson.

We will own all inventions and intellectual property developed under the 2019 R&D Agreement and we will retain all rights to all intellectual property, patentable or not, for oncology products manufactured using non-viral gene transfer technologies under the 2019 R&D Agreement, including our Sleeping Beauty technology. We have granted MD Anderson an exclusive license for such intellectual property to develop and commercialize autologous TCR products manufactured using viral gene transfer technologies, and any products outside the field of oncology and a non-exclusive license for allogenic TCR products manufactured using viral-based technologies.

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Under the 2019 R&D Agreement, we agreed, beginning on January 1, 2021, to reimburse MD Anderson up to a total of $20 million for development costs under the 2019 R&D Agreement, after the funds from the 2015 R&D Agreement are exhausted. In addition, we will pay MD Anderson royalties on net sales of its TCR products at rates in the low single digits. We are required to make performance-based payments upon the successful completion of clinical and regulatory benchmarks relating to its TCR products. The aggregate potential benchmark payments are $36.5 million, of which only $3.0 million will be due prior to the first marketing approval of our TCR products. The royalty rates and benchmark payments owed to MD Anderson may be reduced upon the occurrence of certain events. We also agreed to sell our TCR products to MD Anderson at preferential prices and will sell our TCR products in Texas exclusively to MD Anderson for a limited period of time following the first commercial sale of our TCR products.

The 2019 R&D Agreement will terminate on December 31, 2026 and either party may terminate the 2019 R&D Agreement following written notice of a material breach. The 2019 R&D Agreement also contains customary provisions related to indemnification obligations, confidentiality and other matters.

In connection with the execution of the 2019 R&D Agreement, on October 22, 2019, we issued MD Anderson a warrant to purchase 3,333,333 shares of our common stock, which is referred to as the MD Anderson Warrant. The MD Anderson Warrant has an initial exercise price of $0.001 per share, expires on December 31, 2026 and vests in four parts upon the occurrence of certain clinical milestones. As of December 31, 2023, the milestones have not been met.

The MD Anderson Warrant and the shares of our common stock to be issued upon exercise of the MD Anderson Warrant have not been registered under the Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.

License Agreement with the NCI

On May 28, 2019, we entered into a patent license agreement, or the Patent License, with the NCI. Pursuant to the Patent License, we hold an exclusive, worldwide license to certain intellectual property to develop and commercialize patient-derived (autologous), peripheral blood T-cell therapy products engineered by transposon-mediated gene transfer to express TCRs reactive to mutated KRAS, TP53 and EGFR neoantigens. In addition, pursuant to the Patent License, we hold an exclusive, worldwide license to certain intellectual property for manufacturing technologies to develop and commercialize autologous, peripheral blood T-cell therapy products engineered by non-viral gene transfer to express TCRs, as well as a non-exclusive, worldwide license to certain additional manufacturing technologies. On May 29, 2019, January 8, 2020, September 28, 2020, April 16, 2021, May 4, 2021, and August 13, 2021 we amended the Patent License to expand our TCR library to include additional TCRs reactive to mutated KRAS and TP53 neoantigens licensed from the NCI.

The terms of the Patent License required us to pay the NCI minimum annual royalties in the amount of $0.3 million, which amount will be reduced to $0.1 million once the aggregate minimum annual royalties paid by us equals $1.5 million.

We were also required to make performance-based payments upon successful completion of clinical and regulatory benchmarks relating to the licensed products. Of such payments, the aggregate potential benchmark payments were $4.3 million, of which aggregate payments of $3.0 million was due only after marketing approval in the United States or in Europe, Japan, Australia, China or India. The first benchmark payment of $0.1 million was paid in 2022 upon the initiation of our TCR-T Library Phase 1/2 Trial, which was a qualifying Phase 1 clinical trial under the terms of the Patent License.

In addition, we were required to pay the NCI one-time benchmark payments following aggregate net sales of licensed products at certain aggregate net sales ranging from $250.0 million to $1.0 billion. The aggregate potential amount of these benchmark payments is $12.0 million. We must also pay the NCI royalties on net sales of products covered by the Patent License at rates in the low to mid-single digits depending upon the technology included in a licensed product. To the extent we enter into a sublicensing agreement relating to a licensed product, we are required to pay the NCI a percentage of all consideration received from a sublicensee, which percentage will decrease based on the stage of development of the licensed product at the time of the sublicense.

The Patent License was to expire upon expiration of the last patent contained in the licensed patent rights, unless terminated earlier. The NCI could have terminated or modified the Patent License in the event of a material breach, including if we did not meet certain milestones by certain dates, or upon certain insolvency events that remained uncured following the date that was 90 days following written notice of such breach or insolvency event. We could have terminated the Patent License, or any portion thereof, in our sole discretion at any time upon 60 days’ written notice to the NCI. In addition, the NCI had the right to: (i) require us to sublicense the rights to the product candidates covered by the Patent License upon certain conditions, including if we are not reasonably satisfying required health and safety needs and (ii) terminate or modify the Patent License, including if we are not satisfying requirements for public use as specified by federal regulations.

On October 27, 2023, we provided the requisite 60-days' notice to the NCI of our intention to terminate the Patent License, effective December 26, 2023. The Patent License subsequently was terminated on that date.

Cooperative Research and Development Agreement with the NCI

On January 9, 2017, we entered into a Cooperative Research and Development Agreement, or CRADA, with the NCI. The purpose of this collaboration was to advance a personalized TCR-T approach for the treatment of solid tumors. Using our Sleeping Beauty technology, the NCI

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would analyze a patient’s own cancer cells, identify their unique neoantigens and TCRs reactive against those neoantigens and then use our Sleeping Beauty technology to transpose one or more TCRs into T cells for re-infusion. Research conducted under the CRADA was at the direction of Steven A. Rosenberg, M.D., Ph.D., Chief of the Surgery Branch at the NCI, in collaboration with our researchers.

We were responsible for providing the NCI with the test materials necessary for them to conduct their studies, and eventually, clinical trials pursuant to the CRADA. Inventions, data and materials discovered or produced in connection with performance of the research plan under the CRADA would have remained the sole property of the party who produced the discovery. The parties would have jointly owned all inventions jointly discovered under the research plan. The owner of any invention under the CRADA would have made the decision to file a patent covering the invention, or in the case of a jointly owned invention, we would have had the first opportunity to file a patent covering the invention. If we failed to provide timely notice of our decision to the NCI or decided not to file a patent covering the joint invention, NCI had the right to make the filing. For any invention solely owned by NCI or jointly made by NCI and us for which a patent application was filed, the U.S. Public Health service would have granted us an exclusive option to elect an exclusive or non-exclusive commercialization license. For inventions owned solely by NCI or jointly owned by NCI and us, which are licensed according to the terms described above, we agreed to grant to the U.S. government a non-exclusive, non-transferable, irrevocable and paid up license to practice the invention or have the invention practiced on its behalf throughout the world. We were also required to grant the U.S. government a non-exclusive, non-transferable, irrevocable and paid up license to practice the invention or have the invention practiced on its behalf throughout the world for any of our solely owned inventions. The agreement could have been terminated by any of the parties upon 60 days prior written consent.

The NCI had a cleared IND that would permit them to begin this trial. To our knowledge, the trial has not yet enrolled. The progress and timeline for this trial, including the timeline for dosing patients, were under control of the NCI.

In February 2019, we extended the CRADA with the NCI until January 9, 2022, committing an additional $5.0 million to this program. In March 2022, we entered into an amendment to the CRADA that is retroactive, effective January 9, 2022 to extend the term of the CRADA until January 9, 2023. In June 2022, we entered into the Fourth Amendment to the CRADA, or the CRADA Fourth Amendment, which, among other things, extended the term of the CRADA until January 9, 2025. In connection with the CRADA Fourth Amendment, we agreed to contribute $1.0 million per year, payable on a quarterly basis, beginning in the first quarter of 2023.

On August 14, 2023, we provided the requisite 60-days' notice of our intention to terminate the CRADA, which did subsequently terminate at that time.

TCR-T Platform Licenses

In January 2015, we in-licensed from MD Anderson a technology portfolio that includes intellectual property directed to certain non-viral Sleeping Beauty technologies as well as TCR-T cell therapy and bioprocessing technology. Under the terms of the agreement, we have an exclusive license to certain of the intellectual property technology, a co-exclusive license to certain of the intellectual property technology and a non-exclusive license to certain of the intellectual property technology. Our rights to the MD Anderson intellectual property flow to us via our agreement with PGEN.

Governmental Regulation and Product Approval

As a biopharmaceutical company, we are subject to extensive regulation. Our genetically engineered T-cell product candidates are regulated as biologics. With this classification, commercial production of our products will need to occur in registered and licensed facilities in compliance with cGMPs for biologics.

Human immunotherapy products are a new category of therapeutics. The FDA categorizes human cell- or tissue-based products as either minimally manipulated or more than minimally manipulated and has determined that more than minimally manipulated products require clinical trials to demonstrate product safety and efficacy and the submission of a Biologics License Application, or BLA, for marketing authorization.

Government authorities in the United States (at the federal, state and local level) and in other countries and jurisdictions extensively regulate, among other things, the research, development, preclinical and clinical testing, manufacturing, quality control, labeling, packaging, storage, record-keeping, promotion, advertising, sale, distribution, post-approval monitoring and reporting, marketing and export and import of biopharmaceutical products such as those we are developing. Our product candidates must be approved by the FDA before they may be legally marketed in the United States and by the appropriate foreign regulatory agency before they may be legally marketed in foreign countries. Generally, our activities in other countries will be subject to regulation that is similar in nature and scope as that imposed in the United States, although there can be important differences. The process for obtaining regulatory marketing approvals and the subsequent compliance with applicable federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial resources.

U.S. Product Development Process

In the United States, the FDA regulates biological products under the Public Health Service Act, or PHSA, and the Federal Food, Drug and Cosmetic Act, or FDCA, and implementing regulations. Products are also subject to other federal, state and local statutes and regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and

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regulations require the expenditure of substantial time and financial resources. Failure to comply with the applicable United States requirements at any time during the product development process, approval process or after approval, may subject an applicant to administrative or judicial sanctions. FDA sanctions could include, among other actions, refusal to approve pending applications, withdrawal of an approval, a clinical hold, warning letters and similar public notice of alleged non-compliance with laws, product recalls or withdrawals from the market, product seizures, total or partial suspension of production or distribution, fines, refusals of government contracts, restitution, disgorgement of profits, or civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us. The process required by the FDA before a biological product may be approved for marketing in the United States generally involves the following:

•completion of preclinical laboratory tests and animal studies according to Good Laboratory Practices, or GLPs, and applicable requirements for the humane use of laboratory animals or other applicable regulations;

•submission to the FDA of an IND, which must become effective before human clinical trials may begin;

•performance of adequate and well-controlled human clinical trials according to the FDA’s regulations commonly referred to as Good Clinical Practices, or GCPs, and any additional requirements for the protection of human research subjects and their health information, to establish the safety and efficacy of the proposed biological product for its intended use;

•preparation and submission to the FDA of a BLA for marketing approval that includes substantive evidence of safety, purity and potency from results of nonclinical testing and clinical trials;

•satisfactory completion of one or more FDA inspections of the manufacturing facility or facilities where the biological product is produced to assess compliance with cGMP to assure that the facilities, methods and controls used in product manufacture are adequate to preserve the biological product’s identity, strength, quality and purity and, if applicable, the FDA’s current Good Tissue Practices, or GTPs, for the use of human cellular and tissue products;

•potential FDA audit of the nonclinical study and clinical trial sites that generated the data in support of the BLA;

•payment of user fees for FDA review of the BLA; and

•FDA acceptance, review and approval, or licensure, of the BLA, which might include review by an advisory committee, a panel typically consisting of independent clinicians and other experts who provide recommendations as to whether the application should be approved and under what conditions.

Before testing any biological product candidate, including our product candidates, in humans, the product candidate must undergo rigorous preclinical testing. Preclinical tests, also referred to as nonclinical studies, include laboratory evaluations as well as in vitro and animal studies to assess the potential safety and efficacy of the product candidate. The clinical trial sponsor must submit an IND to the FDA before clinical testing can begin in the United States. An IND must contain the results of the preclinical tests, manufacturing information, analytical data, any available clinical data or literature, a proposed clinical protocol, an investigator’s brochure, a sample informed consent form and other materials. Clinical trial protocols detail, among other things, the objectives of the clinical trial, dosing procedures, subject selection and exclusion criteria and the parameters to be used to monitor subject safety, including stopping rules that assure a clinical trial will be stopped if certain adverse events should occur. Each protocol and any amendments to the protocol must be submitted to the FDA as part of the IND. Some preclinical testing, such as toxicity studies, may continue even after the IND is submitted.

The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA raises concerns or questions regarding the proposed clinical trials or places the trial on a clinical hold within that 30-day time period. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. The FDA may also impose clinical holds on a biological product candidate at any time before or during clinical trials due to safety concerns or non-compliance. If the FDA imposes a clinical hold, trials may not recommence without FDA authorization and then only under terms authorized by the FDA.

Further, each clinical trial must be reviewed and approved by an independent institutional review board, or IRB, at or servicing each institution at which the clinical trial will be conducted. An IRB is charged with protecting the welfare and rights of trial participants and considers such items as whether the risks to individuals participating in the clinical trials are minimized and are reasonable in relation to anticipated benefits. The IRB also approves the form and content of the informed consent that must be signed by each clinical trial subject or his or her legal representative and must monitor the clinical trial until completed. Clinical trials involving recombinant or synthetic nucleic acid molecules also must be reviewed by an institutional biosafety committee, or IBC, a local institutional committee that reviews and oversees basic and clinical research conducted at that institution. The IBC assesses the safety of the research and identifies any potential risk to public health or the environment.

Clinical trials involve the administration of the biological product candidate to healthy volunteers or patients under the supervision of qualified investigators, generally physicians not employed by or under the trial sponsor’s control. Clinical trials must be conducted and monitored in accordance with the FDA’s regulations comprising the GCP requirements.

Human clinical trials are typically conducted in three sequential phases that may overlap or be combined:

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•Phase 1. The biological product is initially introduced into healthy human subjects and tested for safety. In the case of some products for severe or life-threatening diseases, especially when the product may be too inherently toxic to ethically administer to healthy volunteers, the initial human testing is often conducted in patients with the target disease or condition.

•Phase 2. The biological product is evaluated in a limited patient population to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the product for specific targeted diseases and to determine dosage tolerance, optimal dosage and dosing schedule.

•Phase 3. Clinical trials are undertaken to further evaluate dosage, clinical efficacy, potency, and safety in an expanded patient population, generally at geographically dispersed clinical trial sites. These clinical trials are intended to generate enough data to statistically evaluate the efficacy and safety of the product for approval, to establish the overall risk to benefit profile of the product and to provide an adequate basis for product labeling.

Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, if at all.

Post-approval clinical trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial marketing approval. These clinical trials are used to gain additional experience from the treatment of patients in the intended therapeutic indication, particularly for long-term safety follow-up.

During all phases of clinical development, regulatory agencies require extensive monitoring and auditing of all clinical activities, clinical data and clinical trial investigators. Annual progress reports detailing the results of the clinical trials must be submitted to the FDA. Written IND safety reports must be promptly submitted to the FDA, the NIH and the investigators for serious and unexpected adverse events, any findings from other studies, tests in laboratory animals or in vitro testing that suggest a significant risk for human patients, or any clinically important increase in the rate of a serious suspected adverse reaction over that listed in the protocol or investigator brochure. The sponsor must submit an IND safety report within 15 calendar days after the sponsor determines that the information qualifies for reporting. The sponsor also must notify the FDA of any unexpected fatal or life-threatening suspected adverse reaction within seven calendar days after the sponsor’s initial receipt of the information. The FDA or the sponsor or its data safety monitoring board, an independent group of experts that evaluates study data for safety and makes recommendations concerning continuation, modification, or termination of clinical trials, may suspend or terminate a clinical trial at any time on various grounds, including a finding that the research patients are being exposed to an unacceptable health risk, including risks inferred from other unrelated immunotherapy trials. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the biological product has been associated with unexpected serious harm to patients.

Concurrently with clinical trials, companies usually complete additional nonclinical studies and must also develop additional information about the physical characteristics of the biological product as well as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. To help reduce the risk of the introduction of adventitious agents with use of biological products, the PHSA emphasizes the importance of manufacturing control for products whose attributes cannot be precisely defined. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other things, the sponsor must develop methods for testing the identity, strength, quality, potency and purity of the final biological product. Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the biological product candidate does not undergo unacceptable deterioration over its shelf life.

The FDA has a fast track designation program that is intended to expedite or facilitate the process for reviewing new drug or biologic products that meet certain criteria. Specifically, new drugs or biologics are eligible for fast track designation if they are intended to treat a serious or life-threatening disease or condition and demonstrate the potential to address unmet medical needs for the disease or condition. Unique to a fast track product, the FDA may consider for review sections of the BLA on a rolling basis before the complete application is submitted, if the sponsor provides a schedule for the submission of the sections of the BLA, the FDA agrees to accept sections of the BLA and determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of the first section of the BLA.

After the completion of clinical trials of a biological product, FDA approval of a BLA must be obtained before commercial marketing of the biological product. The BLA must include results of product development, laboratory and animal studies, human trials, information on the manufacture and composition of the product, proposed labeling and other relevant information.

Under the Prescription Drug User Fee Act, or PDUFA, as amended, each BLA must be accompanied by a significant user fee. The FDA adjusts the PDUFA user fees on an annual basis. PDUFA also imposes an annual program fee for approved biological products. Fee waivers or reductions are available in certain circumstances, including a waiver of the application fee for the first application filed by a small business. Additionally, no user fees are assessed on BLAs for products designated as orphan drugs, unless the product also includes a non-orphan indication.

Within 60 days following submission of the application, the FDA reviews a BLA submitted to determine if it is substantially complete before the agency accepts it for filing. The FDA may refuse to file any BLA that it deems incomplete or not properly reviewable at the time of submission and may request additional information. In this event, the BLA must be resubmitted with the additional information. The resubmitted application also is subject to review before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive review of the BLA. The FDA reviews the BLA to determine, among other things, whether the proposed product

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is safe, potent, and/or effective for its intended use, and has an acceptable purity profile, and whether the product is being manufactured in accordance with cGMP to assure and preserve the product’s identity, safety, strength, quality, potency and purity. The FDA may refer applications for novel biological products or biological products that present difficult questions of safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions. During the biological product approval process, the FDA also will determine whether a Risk Evaluation and Mitigation Strategy, or REMS, is necessary to ensure that the benefits of the product outweigh its risks and to assure the safe use of the biological product, which could include medication guides, physician communication plans, or elements to assure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. FDA determines the requirement for a REMS, as well as the specific REMS provisions, on a case-by-case basis. If the FDA concludes a REMS is needed, the sponsor of the BLA must submit a proposed REMS. The FDA will not approve a BLA without a REMS, if required.

Before approving a BLA, the FDA will inspect the facilities at which the product is manufactured. The FDA will not approve the product unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. For immunotherapy products, the FDA also will not approve the product if the manufacturer is not in compliance with the GTPs, to the extent applicable. These are FDA regulations and guidance documents that govern the methods used in, and the facilities and controls used for, the manufacture of human cells, tissues and cellular and tissue-based products, or HCT/Ps, which are human cells or tissue intended for implantation, transplant, infusion, or transfer into a human recipient. The primary intent of the GTP requirements is to ensure that cell and tissue-based products are manufactured in a manner designed to prevent the introduction, transmission and spread of communicable disease. FDA GTP regulations also require tissue establishments to register and list their HCT/Ps with the FDA and, when applicable, to evaluate donors through screening and testing. Additionally, before approving a BLA, the FDA will typically inspect one or more clinical sites to assure that the clinical trials were conducted in compliance with IND trial requirements and GCP requirements.

Notwithstanding the submission of relevant data and information, the FDA may ultimately decide that the BLA does not satisfy its regulatory criteria for approval. If the agency decides not to approve the BLA in its present form, the FDA will issue a Complete Response Letter, which generally outlines the specific deficiencies in the BLA identified by the FDA and may require additional clinical or other data or impose other conditions that must be met in order to secure final approval of the application. The deficiencies identified may be minor, for example, requiring labeling changes, or major, for example, requiring additional clinical trials. Even with the submission of additional information, the FDA may ultimately decide that the application does not satisfy the regulatory criteria for approval. If a Complete Response Letter is issued, the applicant may either resubmit the BLA, addressing all of the deficiencies identified in the letter, or withdraw the application.

The FDA may require that certain contraindications, warnings or precautions be included in the product labeling, or otherwise limit the scope of any approval. In addition, the FDA may require post marketing clinical trials, sometimes referred to as Phase 4 clinical trials, designed to further assess a biological product’s safety and effectiveness, and testing and surveillance programs to monitor the safety of approved products that have been commercialized. After approval, many types of changes to the approved product, such as adding new indications, manufacturing changes and additional labeling claims, are subject to further testing requirements and FDA review and approval.

In addition, under the Pediatric Research Equity Act, or PREA, a BLA or supplement to a BLA must contain data to assess the safety and effectiveness of the product for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The FDA may grant deferrals for submission of data or full or partial waivers.

Post-Approval Requirements

Any products for which we receive FDA approvals are subject to continuing regulation by the FDA, including, among other things, record-keeping requirements, reporting of adverse experiences with the product, providing the FDA with updated safety and efficacy information, product sampling and distribution requirements and complying with FDA promotion and advertising requirements.

In addition, quality control and manufacturing procedures must continue to conform to applicable manufacturing requirements after approval to ensure the long-term stability of the product. We relied on third parties for the production of clinical and commercial quantities of our products in accordance with cGMP regulations. cGMP regulations require, among other things, quality control and quality assurance as well as the corresponding maintenance of records and documentation and the obligation to investigate and correct any deviations from cGMP. Manufacturers and other entities involved in the manufacture and distribution of approved products are required to register their establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with cGMP and other laws. Accordingly, manufacturers must continue to expend time, money and effort in the area of production and quality control to maintain cGMP compliance. Discovery of problems with a product after approval may result in restrictions on a product, manufacturer or holder of an approved BLA, including, among other things, recall or withdrawal of the product from the market.

The FDA also may require post-marketing testing, known as Phase 4 testing, and surveillance to monitor the effects of an approved product. Discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, with manufacturing processes, or the failure to comply with applicable FDA requirements can have negative consequences, including adverse

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publicity, judicial or administrative enforcement, complete withdrawal from the market, product recalls, warning letters from the FDA, mandated corrective advertising or communications with doctors, product seizure or detention, injunctions and civil or criminal penalties, among others. Newly discovered or developed safety or effectiveness data may require changes to a product’s approved labeling, including the addition of new warnings and contraindications, and also may require the implementation of other risk management measures. Also, new government requirements, including those resulting from new legislation, may be established, or the FDA’s policies may change, which could delay or prevent regulatory approval of our products under development.

Moreover, the FDA strictly regulates marketing, labeling, advertising and promotion of products. Drugs may be promoted only for the approved indications and in accordance with the provisions of the approved label, although physicians, in the practice of medicine, may prescribe approved drugs for unapproved indications. However, companies may share truthful and not misleading information that is otherwise consistent with the labeling. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant liability.

U.S. Marketing Exclusivity

The Biologics Price Competition and Innovation Act, or BPCIA, amended the PHSA to authorize the FDA to approve similar versions of innovative biologics, commonly known as biosimilars. Biosimilars are approved pursuant to an abbreviated pathway whereby applicants need not submit the full slate of preclinical and clinical data, and approval is based in part on the FDA’s findings of safety, purity, and potency for the original biologic (i.e., the reference product). Reference products are eligible to receive 12 years of exclusivity from the time of first licensure of the product, which prevents the FDA from approving any biosimilars to the reference product through the abbreviated pathway, but does not prevent approval of BLAs that are accompanied by a full data package and that do not rely on the reference product. A biosimilar may be approved if the product is highly similar to the reference product notwithstanding minor differences in clinically inactive components and there are no clinically meaningful differences with the reference product in terms of the safety, purity and potency.

Pediatric exclusivity is another type of regulatory market exclusivity in the United States. Pediatric exclusivity, if granted, adds six months to existing exclusivity periods and patent terms. This six-month exclusivity, which runs from the end of other exclusivity protection or patent term, may be granted based on the voluntary completion of a pediatric trial in accordance with an FDA-issued “Written Request” for such a trial.

Orphan Drug Designation

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biologic intended to treat a rare disease or condition, which is a disease or condition that affects fewer than 200,000 individuals in the United States or, if it affects more than 200,000 individuals in the United States, there is no reasonable expectation that the cost of developing and making a drug or biologic product available in the United States for this type of disease or condition will be recovered from sales of the product. Orphan designation must be requested before submitting a marketing application. After the FDA grants orphan designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan designation does not convey any advantage in or shorten the duration of the regulatory review and approval process.

If a product that has orphan designation subsequently receives the first FDA approval for the disease or condition for which it has such designation, the product is entitled to orphan product exclusivity, which means that the FDA may not approve any other applications to market the same drug or biological product for the same indication for seven years, except in limited circumstances, such as a showing of clinical superiority to the product with orphan exclusivity or inability to manufacture the product in sufficient quantities. The designation of such drug also entitles a party to financial incentives such as opportunities for grant funding towards clinical trial costs, tax advantages and user fee waivers. Competitors, however, may receive approval of different products for the indication for which the orphan product has exclusivity or obtain approval for the same product but for a different indication for which the orphan product has exclusivity. Orphan exclusivity also could block the approval of one of our products for seven years if a competitor obtains approval of the same product as defined by the FDA or if our product candidate is determined to be contained within the competitor’s product for the same indication or disease. If an orphan designated product receives marketing approval for an indication broader than what is designated, it may not be entitled to orphan exclusivity. Orphan drug status in the European Union, or EU, has similar but not identical benefits in that jurisdiction.

Coverage, Pricing and Reimbursement

Significant uncertainty exists as to the coverage and reimbursement status of any product candidates for which we obtain regulatory approval. In the United States and markets in other countries, sales of any products for which we receive regulatory approval for commercial sale will depend, in significant part, on the extent to which third-party payors provide coverage, and establish adequate reimbursement levels for such products. In the United States, third-party payors include federal and state healthcare programs, private managed care providers, health insurers and other organizations. The process for determining whether a third-party payor will provide coverage for a product may be separate from the process for setting the price of a product or for establishing the reimbursement rate that such a payor will pay for the product. Third-party payors may limit coverage to specific products on an approved list, also known as a formulary, which might not include all of the FDA-approved products for a particular indication. In addition, in the United States, no uniform policy of coverage and reimbursement for drug products exists among third-party payors. Therefore, coverage and reimbursement for drug products can differ significantly from payor to

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payor. Third-party payors are increasingly challenging the price, examining the medical necessity of and reviewing the cost-effectiveness of medical products, therapies and services, in addition to questioning their safety and efficacy.

Reimbursement may impact the demand for, and/or the price of, any product candidate that obtains marketing approval. Even if coverage and reimbursement is obtained for a given product candidate by a third-party payor, the resulting reimbursement payment rates may not be adequate or may require co-payments that patients find unacceptably high. Patients who are prescribed medications for the treatment of their conditions, and their prescribing physicians, generally rely on third-party payors to reimburse all or part of the costs associated with those medications. Patients are unlikely to use a product, and physicians may be less likely to prescribe a product, unless coverage is provided and reimbursement is adequate to cover all or a significant portion of the cost of the product. Therefore, coverage and adequate reimbursement is critical to new drug product acceptance.

The downward pressure on health care costs in general, particularly prescription drugs and biologics, has become very intense. Governments have shown significant interest in implementing cost-containment programs, including price controls, restrictions on reimbursement and requirements for substitution of generic products. As a result, increasingly high barriers are being erected to the entry of new products. The marketability of any product candidates for which we receive regulatory approval for commercial sale may suffer if the government and third-party payors fail to provide favorable coverage and adequate reimbursement. In addition, emphasis on managed care in the United States has increased, and we expect will continue to increase, the pressure on healthcare pricing. Coverage policies and third-party reimbursement rates may change at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

Health Care Laws Governing Interactions with Healthcare Providers

Healthcare providers and third-party payors in the United States play a primary role in the recommendation and prescription of drug products. Arrangements with healthcare providers, third-party payors and customers can expose pharmaceutical manufactures to broadly applicable fraud and abuse and other healthcare laws, including false claims, privacy and security, price reporting and physician sunshine laws or regulations. Some of our pre-commercial activities are subject to some of these laws. The applicable federal, state and foreign healthcare laws and regulations laws that may affect a pharmaceutical manufacture’s ability to operate include, but are not limited to:

•The federal Anti-Kickback Statute, which regulates our business activities, including our marketing practices, educational programs, pricing policies and relationships with healthcare providers or other entities, by prohibiting, among other things, soliciting, receiving, offering or paying remuneration, directly or indirectly, to induce, or in return for, either the referral of an individual or the purchase or recommendation of an item or service reimbursable under a federal healthcare program, such as the Medicare and Medicaid programs;

•Federal civil and criminal false claims laws, including the False Claims Act which permits a private individual acting as a “whistleblower” to bring actions on behalf of the federal government alleging violations of the False Claims Act, and civil monetary penalty laws, which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid, or other third-party payors that are false or fraudulent;

•The federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, which created new federal civil and criminal statutes that prohibit, among other things, executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters;

•HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH, and their implementing regulations, which imposes certain requirements relating to the privacy, security and transmission of individually identifiable health information on entities and individuals subject to the law including certain healthcare providers, health plans and healthcare clearinghouses, known as covered entities, as well as individuals and entities that perform services for them which involve the use, or disclosure of, individually identifiable health information, known as business associates as well as their covered subcontractors;

•Requirements to report annually to the Centers for Medicare & Medicaid Services, or CMS, certain financial arrangements with physicians and teaching hospitals, as defined in the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, or collectively the ACA, and its implementing regulations, including reporting any “transfer of value” made or distributed to prescribers and teaching hospitals, and reporting any ownership and investment interests held by physicians and their immediate family members during the preceding calendar year; and

•State and foreign law equivalents of each of the above federal laws, such as anti-kickback and false claims laws which may apply to items or services reimbursed by any third-party payor, including commercial insurers; state laws that require pharmaceutical companies to comply with the industry’s voluntary compliance guidelines and the applicable compliance guidance promulgated by the federal government that otherwise restricts certain payments that may be made to healthcare providers and entities; state laws that require drug manufacturers to report information related to payments and other transfer of value to physicians and other healthcare providers and entities; state laws that require the reporting of information related to drug pricing; state and local laws that require the registration of pharmaceutical sales representatives; and state and foreign laws governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

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Efforts to ensure that business arrangements comply with applicable healthcare laws involve substantial costs. It is possible that governmental and enforcement authorities will conclude that a pharmaceutical manufacturer’s business practices do not comply with current or future statutes, regulations or case law interpreting applicable fraud and abuse or other healthcare laws and regulations. If any such actions are instituted against a pharmaceutical manufacturer, and it is not successful in defending itself or asserting its rights, it may be subject to the imposition of significant civil, criminal and administrative penalties, damages, disgorgement, monetary fines, imprisonment, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of operations, as well as additional reporting obligations and oversight if subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with these laws. In addition, the approval and commercialization of drug products outside the United States may also subject a pharmaceutical manufacturer to foreign equivalents of the healthcare laws mentioned above, among other foreign laws.

Healthcare Reform Efforts

A primary trend in the United States healthcare industry and elsewhere is cost containment. Over the last several years, there have been federal and state proposals and legislation enacted regarding the pricing of pharmaceutical and biopharmaceutical products, limiting coverage and reimbursement for drugs and other medical products and making changes to healthcare financing and the delivery of care in the United States.

In March 2010, President Obama signed into law the ACA, which included measures that have significantly changed the way healthcare is financed by both governmental and private insurers. The ACA, among other things, imposed a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected, increased the minimum Medicaid rebates owed by manufacturers under the Medicaid Drug Rebate Program, extended the rebate program to individuals enrolled in Medicaid managed care organizations, added a provision to increase the Medicaid rebate for line extensions or reformulated drugs, established annual fees on manufacturers and importers of certain branded prescription drugs and biologic agents, promoted a new Medicare Part D coverage gap discount program, expanded the entities eligible for discounts under the Public Health Service Act pharmaceutical pricing program and imposed a number of substantial new compliance provisions related to pharmaceutical companies’ interactions with healthcare practitioners. The ACA also expanded eligibility for Medicaid programs and introduced a new Patient Centered Outcomes Research Institute to oversee, identify priorities in and conduct comparative clinical effectiveness research, along with funding for such research and a new Center for Medicare & Medicaid Innovation at CMS, to test innovative payment and service delivery models to lower Medicare and Medicaid spending.

There have been executive, legal and political challenges to certain aspects of the ACA. For example, President Trump signed several executive orders and other directives designed to delay, circumvent or loosen certain requirements mandated by the ACA. Concurrently, Congress considered legislation to repeal or repeal and replace all or part of the ACA. While Congress has not passed repeal legislation, several bills affecting the implementation of certain taxes under the ACA have been signed into law. The Tax Cuts and Jobs Act of 2017, or Tax Act, included a provision which repealed, effective January 1, 2019, the tax-based shared responsibility payment imposed by the ACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year that is commonly referred to as the “individual mandate.” Further, the 2020 federal spending package permanently eliminated, effective January 1, 2020, the ACA-mandated “Cadillac” tax on high-cost employer-sponsored health coverage and medical device tax and, effective January 1, 2021, also eliminated the health insurer tax. The Bipartisan Budget Act of 2018, or the BBA, among other things, amended the ACA, effective January 1, 2019, to increase from 50 percent to 70 percent the point-of-sale discount that is owed by pharmaceutical manufacturers who participate in Medicare Part D and to close the coverage gap in most Medicare drug plans, commonly referred to as the “donut hole.” Further, President Biden issued an executive order that instructed certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. Further, there have been a number of health reform initiatives by the Biden administration that have impacted the ACA. For example, on August 16, 2022, President Biden signed the Inflation Reduction Act, or IRA, into law, which, among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in ACA marketplaces through plan year 2025. The IRA also eliminates the "donut hole" under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and implementing a newly established manufacturer discount program. It is possible that the ACA will be subject to judicial or Congressional challenges in the future. It is unclear how any such challenges and the healthcare reform measures of the Biden administration will impact ACA and our business. The ultimate content, timing or effect of any healthcare reform measures on the U.S. healthcare industry is unclear.

In addition, other federal health reform measures have been proposed and adopted in the United States since the ACA was enacted. For example, as a result of the Budget Control Act of 2011, providers are subject to Medicare payment reductions of 2% per fiscal year, which went into effect on April 1, 2013. This 2% reduction was temporarily suspended during the COVID-19 pandemic, but has since been reinstated and, unless Congress and/or the Executive Branch take additional action, will begin to increase gradually starting in April 2030, reaching 4% in April 2031, until sequestration ends in October 2031. Further, the American Taxpayer Relief Act of 2012 reduced Medicare payments to several providers and increased the statute of limitations period for the government to recover overpayments from providers from three to five years. The Medicare Access and CHIP Reauthorization Act of 2015 also introduced a quality payment program under which certain individual Medicare providers will be subject to certain incentives or penalties based on new program quality standards. In November 2019, CMS issued a final rule finalizing the changes to the Medicare Quality Payment Program.

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Further, there has been heightened governmental scrutiny in the United States of pharmaceutical pricing practices in light of the rising cost of prescription drugs and biologics. Such scrutiny has resulted in several recent Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs and reform government program reimbursement methodologies for products. At the federal level, the Trump administration used several means to propose or implement drug pricing reform, including through federal budget proposals, executive orders and policy initiatives. For example, on July 24, 2020 and September 13, 2020, the Trump administration announced several executive orders related to prescription drug pricing that attempt to implement several of the administration’s proposals. The FDA also released a final rule, effective November 30, 2020, implementing a portion of the importation executive order providing guidance for states to build and submit importation plans for drugs from Canada. Further, on November 30, 2020, the U.S. Department of Health and Human Services, or HHS, finalized a regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Part D, either directly or through pharmacy benefit managers, unless the price reduction is required by law. The IRA delayed the implementation of the rule to January 1, 2032. The rule also creates a new safe harbor for price reductions reflected at the point-of-sale, as well as a new safe harbor for certain fixed fee arrangements between pharmacy benefit managers and manufacturers; the implementation of these provisions has also been delayed by the IRA until January 1, 2032. In addition, on March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate price cap, currently set at 100% of a drug’s average manufacturer price for single source and innovator multiple source products, beginning on January 1, 2024. Further, in July 2021, the Biden Administration released an executive order that included multiple provisions aimed at prescription drugs. In response to President Biden's executive order, on September 9, 2021, HHS released a Comprehensive Plan for Addressing High Drug Prices that outlines principles for drug price reform. The plan sets out a variety of potential legislative policies that Congress could pursue as well as potential administrative actions by HHS. No legislative or administrative actions have been finalized to implement these principles. In addition, Congress is considering drug pricing as part of the budget reconciliation process. Additionally, the IRA, among other things, (i) directs HHS to negotiate the price of certain high-expenditure, single-source drugs and biologics covered under Medicare, and subjects drug manufacturers to civil monetary penalties and a potential excise tax for offering a price that is not equal to or less than the negotiated “maximum fair price” under the law, and (ii) imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation. The IRA permits HHS to implement many of these provisions through guidance, as opposed to regulation, for the initial years. These provisions began to take effect progressively starting in fiscal year 2023, although they may be subject to legal challenges. It is currently unclear how the IRA will be effectuated but is likely to have a significant impact on the pharmaceutical industry.

At the state level, legislatures have increasingly enacted legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. In addition, regional healthcare authorities and individual hospitals are increasingly using bidding procedures to determine what pharmaceutical products and which suppliers will be included in their prescription drug and other healthcare programs.

U.S. Foreign Corrupt Practices Act, U.K. Bribery Act and Other Laws

The Foreign Corrupt Practices Act, or the FCPA, prohibits any United States individual or business from paying, offering or authorizing payment or offering of anything of value, directly or indirectly, to any foreign official, political party or candidate for the purpose of influencing any act or decision of the foreign entity in order to assist the individual or business in obtaining or retaining business. The FCPA also obligates companies whose securities are listed in the United States to comply with accounting provisions requiring the company to maintain books and records that accurately and fairly reflect all transactions of the corporation, including international subsidiaries, and to devise and maintain an adequate system of internal accounting controls for international operations. Activities that violate the FCPA, even if they occur wholly outside the United States, can result in criminal and civil fines, imprisonment, disgorgement, oversight, and debarment from government contracts.

Our operations are also subject to non-United States anti-corruption laws such as the U.K. Bribery Act 2010, or the Bribery Act. As with the FCPA, these laws generally prohibit us and our employees and intermediaries from authorizing, promising, offering or providing, directly or indirectly, improper or prohibited payments, or anything else of value, to government officials or other persons to obtain or retain business or gain some other business advantage. Under the Bribery Act, we may also be liable for failing to prevent a person associated with us from committing a bribery offense.

We are also subject to other laws and regulations governing our international operations, including regulations administered by the governments of the United Kingdom and the United States and authorities in the EU, including applicable export control regulations, economic sanctions and embargoes on certain countries and persons, anti-money laundering laws, import and customs requirements and currency exchange regulations, collectively referred to as trade control laws.

Failure to comply with the Bribery Act, the FCPA and other anti-corruption laws and trade control laws could subject us to criminal and civil penalties, disgorgement and other sanctions and remedial measures, and legal expenses.

Competition

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We believe our novel hunTR discovery engine demonstrated the ability to identify proprietary TCRs, allowing us to further expand and advance our pipeline with multiple solid tumor programs under development. In addition, our non-viral transposon method of expressing TCRs, Sleeping Beauty, was less complex relative to many of our competitors’ viral approaches. Finally, our TCR-T Phase 1/2 Library Trial was designed to allow us to treat patients quickly and efficiently in many different indications with a tumor mutation and HLA matching one or more of the several TCRs in our library, which we believe gives us a distinct competitive advantage. However, the development and commercialization for new products to treat cancer, including the indications we pursued, is highly competitive and considerable competition exists from major pharmaceutical, biotechnology and specialty cancer companies. Many of these companies have more experience in preclinical and clinical development, manufacturing, regulatory, and global commercialization. Given the rapidly advancing and changing science and technologies in the industry, they may compete with us in hiring personnel, setting up clinical study sites, recruiting patients for clinical trials, and procuring technologies and licenses complementary to, or required for, our programs. We are also competing with academic institutions, governmental agencies and private organizations that are conducting research in the field of cancer.

Our TCR-T cell therapies targeting solid tumors face significant competition from multiple companies, and their collaborators, in the TCR and CAR technology space. We face competition from several companies, including 2Seventy Bio, Achilles Therapeutics, Adaptimmune Therapeutics, Affini-T Therapeutics, Annoca, ArsenalBio, Athenex, BioNTech, Bristol-Myers Squibb, Immatics, Iovance Biotherapeutics, Kite (a Gilead company), Lion TCR, Lyell Immunopharma, Medigene, Nurix Therapeutics, Neogene Therapeutics (a member of the AstraZeneca group), NexImmune, PACT Pharma, Precigen, Tactiva Therapeutics, Takara Bio, TCR2 Therapeutics, T-Cure BioScience, T-knife Therapeutics, Triumvira Immunologics, TScan Therapeutics, Turnstone Biologics, Zelluna Immunotherapy and others. Many of these companies are either investigating TCR-T cells against germline antigens or are utilizing tumor infiltrating lymphocytes. Some are pursuing CAR-T cells for solid tumors. In contrast, we are focused on developing TCR-T cell products against neoantigens arising from somatic mutations in solid tumors.

Companies in the T-cell therapy segment that have target discovery platforms like ours include Adaptive Biotechnologies, Affini-T Therapeutics, Enara Bio, Immatics, Neogene Therapeutics (a member of the AstraZeneca group), PACT Pharma, T-knife Therapeutics, TScan Therapeutics and 3T Biosciences. Several companies, including Advaxis, Amgen, BioNTech, Geneos Therapeutics, and Gritstone, are pursuing vaccine platforms to target neoantigens for solid tumors. Other companies are developing non-viral gene therapies, including Poseida Therapeutics and several companies developing CRISPR technology, including Captain T Cell and Crispr Therapeutics.

Several companies are pursuing the development of allogeneic CAR-T therapies, including Allogene Therapeutics, Atara Biotherapeutics and Precision Biosciences, which may compete with our product candidates. We also face competition from companies developing therapies using cells other than T cells, such as Athenex, Fate Therapeutics, ImmunityBio, IN8bio, Nkarta Therapeutics and Takeda Pharmaceutical. Other competitors are developing T cells with cytokines, such as Fate Therapeutics and Obsidian Therapeutics. Finally, we also face competition from non-cellular treatments offered by other companies, such as Amgen, AstraZeneca, Bristol-Myers Squibb, Immatics, Immunocore, Incyte, Merck, Mirati and Roche.

We face competition on a broader spectrum of the oncology market that is more common, cost-effective and reimbursable, such as surgery, radiation and other drug therapies like chemotherapy, hormone therapy, biologic therapy such as monoclonal and bispecific antibodies, or a combination of any of these therapies. If any of our TCR-T therapies are approved, they may not be as competitive as other therapies, to the extent they are used in combinations with these therapies. Insurers and other third-party payors may also encourage use of certain products; thus, gaining market acceptance or market share for any of our TCR-T therapies could pose difficulties. Finally, standard of care could evolve or change throughout the clinical development of our product candidates.

Moreover, if our competitors develop and market a drug that is safer, more effective with fewer side effects, easier to administer, or less expensive, we could see a less favorable market opportunity for our TCR-T therapy candidates. Our competition may also receive FDA or other regulatory approval for their products more quickly than we do, which could give them a first mover advantage and a strong market position before we are able to commercialize our products. If approved, key competitive factors that may affect the success of our TCR-T candidates are likely their efficacy, safety, ease of administering, price and reimbursement from insurance or government.

Employees and Human Capital Resources

As of March 1, 2024, we had 1 full-time employee who is engaged in administration and no part-time employees. None of our employees are subject to a collective bargaining agreement and we believe our relations with our employees are good.

Our human capital resources objectives include identifying, recruiting, retaining, incentivizing and integrating our existing and additional employees.

We endeavor to recruit the best people for the position regardless of gender, ethnicity or other protected traits and it is our policy to fully comply with all laws applicable to discrimination in the workplace. Our diversity, equity and inclusion principles are also reflected in our employee training and policies.

The principal purposes of our equity incentive plans are to attract, retain and motivate selected employees, consultants and directors through the granting of stock-based compensation awards and cash-based performance bonus awards.

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In 2023 and the first quarter of 2024, we entered into several material consulting agreements to ensure smooth transitions and business continuity.

The Boyle Separation Agreement and Consulting Agreement

On December 22, 2023, we entered into a Separation and Release Agreement, effective December 22, 2023, with Kevin S. Boyle, Sr. (the “Separation Agreement”), the Company’s Chief Executive Officer, in connection with Mr. Boyle’s termination. Pursuant to the terms of his employment agreement, upon his termination Mr. Boyle was deemed to automatically resign from our Board of Directors.

Pursuant to the terms of the Separation Agreement, and subject to customary conditions, we agreed to pay Mr. Boyle a one-time separation payment in an amount equal to six months of Mr. Boyle’s base salary and the cost of six months of COBRA premiums for Mr. Boyle, or approximately $331,990 less all applicable income and payroll taxes, deductions and withholdings. Mr. Boyle has agreed to make himself reasonably available to us to provide information related to his transition. The Separation Agreement also provides for a customary mutual release of all claims by us and Mr. Boyle against one another.

We also entered into a consulting agreement (the “Boyle Consulting Agreement”), effective January 1, 2024, with Mr. Boyle pursuant to which he will continue providing strategic and advisory services to us. The Boyle Consulting Agreement will continue for a period of six months. The Boyle Consulting Agreement provides for compensation at a fixed rate of $15,000 per month and reimbursement for any usual and customary expenses incurred by Mr. Boyle in connection with performing services pursuant to the Boyle Consulting Agreement.

The Deniger Separation and Lackey Separation & Consulting Agreements

As previously reported, on November 10, 2023, we terminated the employment of Melinda Lackey, Senior Vice President, Legal and Administration, and Drew Deniger, Vice President, Research and Development, “Without Cause” (as defined in their respective employment agreements) and, per their respective retention agreements, not because either failed to perform their duties at an “Acceptable Level” (as defined therein), effective November 15, 2023. In connection with their termination, we paid $44,998 to Ms. Lackey pursuant to her retention letter agreement, dated August 14, 2023, and $45,623 to Dr. Deniger pursuant to his retention letter agreement, dated September 1, 2023.

The Deniger Separation Agreement

Pursuant to the terms of the separation and release agreement between us and Dr. Deniger (the “Deniger Separation Agreement”), Dr. Deniger has agreed to remain reasonably available to the Company, and to reasonably cooperate and assist us, in connection with (i) any investigations, litigation or other proceedings in which he was involved while an employee and (ii) our consideration of strategic alternatives relating to its scientific assets. Subject to customary conditions, we paid Dr. Deniger a one-time separation payment in an amount equal to $182,500, less all applicable income and payroll taxes, deductions and withholdings. The Deniger Separation Agreement also provides for a customary release of all claims against us by Dr. Deniger.

The Lackey Separation Agreement and Consulting Agreement

Pursuant to the terms of the separation and release agreement between us and Ms. Lackey (the “Lackey Separation Agreement”), Ms. Lackey agreed to remain reasonably available to the Company, and to reasonably cooperate and assist us, in connection with any investigations, litigation or other proceedings in which she was involved while an employee. Subject to customary conditions, we paid Ms. Lackey a one-time separation payment in an amount equal to $180,000, less all applicable income and payroll taxes, deductions and withholdings. The Lackey Separation Agreement also provides for a customary release of all claims against us by Ms. Lackey.

We also entered into a consulting agreement (the “Lackey Consulting Agreement”), effective November 16, 2023, with Ms. Lackey pursuant to which Ms. Lackey will continue providing legal services to us, including assisting in its ongoing exploration of strategic alternatives. The Lackey Consulting Agreement will continue indefinitely until terminated by the Company or Ms. Lackey upon 30 days prior written notice. The Lackey Consulting Agreement provides for compensation at a fixed rate of $400 per hour and reimbursement by the Company for any usual and customary expenses incurred by Ms. Lackey in connection with performing services pursuant to the Lackey Consulting Agreement.

Mr. Wong's Departure and Mr. Groenewald Engagement

On February 15, 2024, Michael Wong gave notice of his resignation as Vice President, Finance, of the Company effective February 23, 2024.

On February 22, 2024, the Company and Ferdinand Groenewald entered into a consulting agreement (the “Consulting Agreement”), effective February 22, 2024, pursuant to which Mr. Groenewald will lead accounting and financial reporting activities of the Company. Mr. Groenewald will serve as the Company’s Vice President, Finance. The Consulting Agreement will continue indefinitely until terminated by either party upon 30 days’ advance notice. The Consulting Agreement provides for compensation at a fixed rate of $15,000 per month and reimbursement by the Company for any usual and customary business expenses incurred by Mr. Groenewald in connection with performing services pursuant to the Consulting Agreement. In addition, the Consulting Agreement provides for the Company to indemnify Mr. Groenewald on terms customary for officers.

Since July 2022, Mr. Groenewald, age 39, has served in several capacities at the CFO Squad, which provides outsourced accounting and consulting services. From January 2, 2022 to July 31, 2022, Mr. Groenewald had served as the Chief Accounting Officer of Muscle Maker, Inc., a Nasdaq-listed company. From September 2018 to January 2, 2022, Mr. Groenewald served as the Chief Financial Officer of Muscle Maker,

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Inc. From January 25, 2018 through May 29, 2018, Mr. Groenewald served as the Vice President of Finance, Principal Financial Officer and Principal Accounting Officer of Muscle Maker, Inc., Muscle Maker Development, LLC and Muscle Maker Corp., LLC. In addition, from October 2017 through May 29, 2018, he served as the controller of Muscle Maker, Inc. Mr. Groenewald is a certified public accountant with significant experience in finance and accounting. From July 2018 through August 2018, he served as senior financial reporting accountant of Wrinkle Gardner & Company, a full-service tax, accounting and business consulting firm. From February 2017 to October 2017, Mr. Groenewald served as Senior Financial Accounting Consultant at Pharos Advisors, Inc. serving a broad range of industries. From November 2013 to February 2017, he served as a Senior Staff Accountant at Financial Consulting Strategies, LLC, where he provided a broad range of accounting, financial reporting, and pre-auditing services to various industries. From August 2015 to December 2015, Mr. Groenewald served as a Financial Reporting Analyst at Valley National Bank. Mr. Groenewald holds a Bachelor of Science in accounting from the University of South Africa. Mr. Groenewald has served as a member of the Board of Directors of (i) HeartCore Enterprises, Inc., a company listed on the Nasdaq Capital Market, since January 24, 2022; (ii) SYLA Technologies Co., Ltd., a publicly reporting company that is listed on the Nasdaq Capital Market, since December 1, 2022; and (iii) Sushi Ginza Onodera, Inc., a company that has publicly filed a registration statement on Form S-1 in connection with its initial public offering, since July 1, 2023.

Corporate Information

We originally incorporated in Colorado in September 1998 (under the name Net Escapes, Inc.) and later changed our name to “EasyWeb, Inc.” in February 1999. We re-incorporated in Delaware on May 16, 2005 under the same name. On September 13, 2005, we completed a “reverse” acquisition of privately held Ziopharm, Inc., a Delaware corporation. To effect this transaction, we caused ZIO Acquisition Corp., our wholly-owned subsidiary, to merge with and into Ziopharm, Inc., with Ziopharm, Inc. surviving as our wholly owned subsidiary. Following the merger, we caused Ziopharm, Inc. to merge with and into us and we changed our name to “Ziopharm Oncology, Inc.” As a result, Ziopharm, Inc. became the registrant with the Securities and Exchange Commission, or the SEC, and the historical financial statements of Ziopharm, Inc. became our historical financial statements. On January 25, 2022, we filed a Certificate of Amendment to our Amended and Restated Certificate of Incorporation with the Delaware Secretary of State to change our name to Alaunos Therapeutics, Inc.

Our principal executive offices are located at 2617 Bissonnet Street, Suite 225, Houston, Texas 77005, and our telephone number is (346) 355-4099.

Available Information

Our website address is www.alaunos.com. Our website and information included in or linked to our website are not part of this Annual Report on Form 10-K. We file reports with the SEC, which we make available on our website free of charge. These reports include annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to such reports, each of which is provided on our website as soon as reasonably practicable after we electronically file such materials with or furnish them to the SEC. In addition, the SEC maintains a website (www.sec.gov) that contains reports, proxy and information statements and other information regarding issuers, like us, that file electronically with the SEC.

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Item 1A. Risk Factors

An investment in our common stock is risky. In addition to the other information in this Annual Report on Form 10-K, you should carefully consider the following risk factors in evaluating us and our business. If any of the events described in the following risk factors were to occur, our business, financial condition, results of operations, cash flows and prospects would likely be materially and adversely affected. In that event, the trading price of our common stock could decline, and you could lose all or a part of your investment in our common stock. Therefore, we urge you to carefully review this entire Annual Report on Form 10-K and consider the risk factors discussed below. Moreover, the risks described below are not the only ones that we face. Additional risks not presently known to us or that we currently deem immaterial may also affect our business, financial condition, results of operations, cash flows and prospects. Additional risks that we currently do not know about, or that we currently believe to be immaterial, may also impair our business, financial condition, results of operations, cash flows and prospects. Certain statements below are forward-looking statements. See “Special Note Regarding Forward-Looking Statements” in this Annual Report.

RISKS RELATED TO OUR STRATEGIC REPRIORITIZATION

Our strategic reprioritization may not be successful, may not yield the desired results and we may be unsuccessful in identifying and implementing any strategic transaction.

On August 14, 2023, we announced a strategic reprioritization of our business and wind down of our TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, we have reduced our workforce by approximately 95% to date and we continue working to reduce costs in order to extend our cash runway. We continue to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. We have engaged Cantor Fitzgerald & Co., or Cantor, to act as strategic advisor for this process. In addition, while we are evaluating several potential in-licensing opportunities in obesity, oncology and virology, there is no assurance that any of these potential opportunities will come to fruition.

We believe there is value in our hunTR® TCR discovery platform. However, the platform is experimental. There can be no assurances that we can succeed in improving the platform’s appeal and increasing its value. We may be unable to successfully monetize the platform or any TCRs we discovered, either through partnerships or out-licensing.

We expect to devote substantial time and resources to exploring strategic alternatives that our Board of Directors believes will maximize stockholder value. Despite devoting significant efforts to identify and evaluate potential strategic alternatives, there can be no assurance that this strategic review process will result in us pursuing any transaction or that any transaction, if pursued, will be completed on attractive terms or at all. We have not set a timetable for completion of this strategic review process, and our Board of Directors has not approved a definitive course of action. Additionally, there can be no assurances that any particular course of action, business arrangement or transaction, or series of transactions, will be pursued, successfully consummated or lead to increased stockholder value or that we will make any additional cash distributions to our stockholders.

The process of continuing to evaluate these strategic options may be very costly, time-consuming and complex and we have incurred, and may in the future incur, significant costs related to this continued evaluation, such as legal and accounting fees and expenses and other related charges. We may also incur additional unanticipated expenses in connection with this process. A considerable portion of these costs will be incurred regardless of whether any such course of action is implemented or transaction is completed. Any such expenses will decrease the remaining cash available for use in our business.

In addition, potential counterparties in a strategic transaction involving the Company may place minimal or no value on our assets or our public listing. Further, should we resume the development of our product candidates, the development and any potential commercialization of our product candidates will require substantial additional cash to fund the costs associated with conducting the necessary preclinical and clinical testing and obtaining regulatory approval. Consequently, any potential counterparty in a strategic transaction involving the Company may choose not to spend additional resources and continue development of our product candidates and may attribute little or no value, in such a transaction, to those product candidates.

In addition, any strategic business combination or other transactions that we may consummate in the future could have a variety of negative consequences and we may implement a course of action or consummate a transaction that yields unexpected results that adversely affect our business and decreases the remaining cash available for use in our business or the execution of our strategic plan. Any potential transaction would be dependent on a number of factors that may be beyond our control, including, among other things, market conditions, industry trends, the interest of third parties in a potential transaction with us, obtaining stockholder approval and the availability of financing to third parties in a potential transaction with us on reasonable terms. Any failure of such potential transaction to achieve the anticipated results could significantly impair our ability to enter into any future strategic transactions and may significantly diminish or delay any future distributions to our stockholders.

If we are not successful in setting forth a new strategic path for the Company, or if our plans are not executed in a timely fashion, this may cause reputational harm with our stockholders and the value of our securities may be adversely impacted. In addition, speculation regarding any developments related to the review of strategic alternatives and perceived uncertainties related to the future of the Company could cause our stock price to fluctuate significantly.

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Even if we successfully consummate a transaction from our strategic assessment, we may fail to realize all of the anticipated benefits of the transaction, those benefits may take longer to realize than expected, or we may encounter integration difficulties.

Our ability to realize the anticipated benefits of any potential business combination or any other result from our strategic assessment is highly uncertain. Any anticipated benefits will depend on a number of factors, including our ability to integrate with any future business partner, the success of any future business we may engage in following the transaction and our ability to obtain value for our product candidates or technologies, if divested. The process may be disruptive to our business and the expected benefits may not be achieved within the anticipated timeframe, or at all. The failure to meet the challenges involved and to realize the anticipated benefits of any potential transaction could adversely affect our business and financial condition. Furthermore, our stockholders may experience substantial dilution as a result of the transaction without receiving the expected commensurate benefit, or only receiving part of the commensurate benefit to the extent we are able to realize only part of the expected strategic and financial benefits currently anticipated from a transaction.

We may require substantial additional financial resources to continue as a going concern, including through the strategic review process, and if we raise additional funds, this may materially and negatively affect the value of your investment in our common stock.

We have not generated significant revenue and have incurred significant net losses in each year since our inception. For the year ended December 31, 2023, we had a net loss of $35.1 million, and, as of December 31, 2023, our accumulated deficit since inception in 2003 was $915.8 million. Although we are in the process of implementing a restructuring plan, or the Plan, whereby we are winding down our TCR-T Library Phase 1/2 Trial, other development programs and implemented a reduction in force, in order to reduce operating expenditures and net losses, as discussed above, there can be no assurances we will be successful at all, or in the amount we anticipate. In connection with our strategic reprioritization, we unilaterally terminated the CRADA with the NCI in August 2023 and the Patent License with the NCI in October 2023.

As of December 31, 2023, we have approximately $6.1 million of cash and cash equivalents. Following implementation of the Plan, we anticipate our cash resources will be sufficient to fund our operations into the third quarter of 2024. We have not set a timetable for completion of the strategic review process and the timing of consummating a strategic transaction, if any, is not entirely within our control. We have no committed sources of additional capital at this time. Accordingly, we could exhaust our current cash resources prior to the identification or consummation of a suitable strategic alternative, requiring the Company to raise additional capital.

We anticipate that our exploration of strategic alternatives will make it more difficult to raise additional capital. To the extent that we raise additional capital by issuing equity securities, our existing stockholders’ ownership will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common stockholders. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, creating liens, making capital expenditures or declaring dividends, which may further constrain our ability to execute on strategic alternatives.

We follow the guidance of Accounting Standards Codification, or ASC, Topic 205-40, Presentation of Financial Statements - Going Concern, in order to determine whether there is substantial doubt about our ability to continue as a going concern for one year after the date our financial statements are issued. Based on the current cash forecast, management has determined that our present capital resources will not be sufficient to fund our planned operations for at least one year from the issuance date of the financial statements, which raises substantial doubt as to our ability to continue as a going concern.

The forecast of cash resources is forward-looking information that involves risks and uncertainties, and our actual cash requirements may vary materially from our current expectations for a number of other factors that may include, but are not limited to, the progress of our strategic review and the pursuit of and progress on one or more options identified in such review. Global political and economic events, including the war in Ukraine and increased inflation, have already resulted in a significant disruption of global financial markets. If the disruption persists and deepens, we could experience an inability to access additional capital or make the terms of any available financing less attractive, which could in the future negatively affect our operations.

If we are successful in completing a strategic transaction, we may be exposed to other operational and financial risks.

Although there can be no assurance that a strategic transaction will result from the process we have undertaken to identify and evaluate strategic alternatives, the negotiation and consummation of any such transaction will require significant time on the part of our management, and the diversion of management’s attention may disrupt our business.

The negotiation and consummation of any such transaction may also require more time or greater cash resources than we anticipate and expose us to other operational and financial risks, including:

•increased near-term and long-term expenditures;

•unknown liabilities;

•higher than expected acquisition or integration costs;

•incurrence of substantial debt or dilutive issuances of equity securities to fund future operations;

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•write-downs of assets or incurrence of non-recurring, impairment or other charges;

•increased amortization expenses;

•difficulty and cost in combining the operations and personnel of any counterparty business with our operations and personnel;

•impairment of relationships with key suppliers or customers of any acquired business due to changes in management and ownership;

•inability to retain key employees of our company or any acquired business; and

•possibility of future litigation.

Any of the foregoing risks could have a material adverse effect on our business, financial condition, results of operations, cash flows and prospects.

If a strategic transaction is not consummated, our Board of Directors may decide to pursue a dissolution and liquidation. In such an event, the amount of cash available for distribution to our stockholders will depend heavily on the timing of such liquidation as well as the amount of cash that will need to be reserved for commitments and contingent liabilities.

There can be no assurance that a strategic transaction will be completed. If a strategic transaction is not completed, our Board of Directors may decide to pursue a dissolution and liquidation. In such an event, the amount of cash available for distribution to our stockholders will depend heavily on the timing of such decision and, with the passage of time the amount of cash available for distribution will be reduced as we continue to fund our operations and exploration of strategic alternatives. In addition, if our Board of Directors were to approve and recommend, and our stockholders were to approve, a dissolution and liquidation, we would be required under Delaware corporate law to pay our outstanding obligations, as well as to make reasonable provision for contingent and unknown obligations, prior to making any distributions in liquidation to our stockholders. As a result of this requirement, a portion of our assets may need to be reserved pending the resolution of such obligations and the timing of any such resolution is uncertain. In addition, we may be subject to litigation or other claims related to a dissolution and liquidation. If a dissolution and liquidation were pursued, our Board of Directors, in consultation with our advisors, would need to evaluate these matters and make a determination about a reasonable amount to reserve. Accordingly, holders of our common stock could lose all or a significant portion of their investment in the event of a liquidation, dissolution or winding up.

Our ability to consummate a strategic transaction depends on our ability to retain our remaining employees and consultants.

Our ability to consummate a strategic transaction depends upon our ability to retain our remaining employees and consultants, the loss of whose services may adversely impact our ability to consummate such transaction. In connection with the evaluation of strategic alternatives and in order to extend our resources, on August 14, 2023, we implemented the Plan that included reducing our workforce. The reduction in force has impacted approximately 95% of our workforce to date, including key members of our management team. Our cash conservation activities may yield unintended consequences, such as attrition beyond our planned reduction in workforce and reduced employee morale, which may cause remaining employees and consultants to seek alternative opportunities. If we are unable to successfully retain our remaining personnel, we are at risk of a disruption to our exploration and consummation of a strategic alternative as well as business operations.

Our corporate restructuring and the associated headcount reduction may not result in anticipated savings, could result in total costs and expenses that are greater than expected and could significantly disrupt our business.

On August 14, 2023, in connection with the evaluation of strategic alternatives and in order to extend our resources, our Board of Directors approved the Plan that included reducing our workforce, which has impacted approximately 95% of our workforce to date. In addition, the Plan included a discontinuation of our clinical development programs and further prioritization of our resources as we assess strategic alternatives. We incurred approximately $1.5 million for retention, severance and other employee termination-related costs starting in the third quarter of 2023 through to the fourth quarter of 2023. We may not realize, in full or in part, the anticipated benefits, savings and improvements in our cost structure from our restructuring efforts due to unforeseen difficulties, delays or unexpected costs. If we are unable to realize the expected operational efficiencies and cost savings from the restructuring, our operating results and financial condition would be adversely affected. Furthermore, the Plan may be disruptive to our operations. For example, our headcount reductions could yield unanticipated consequences, such as increased difficulties in implementing our business strategy, including retention of our remaining employees and consultants. Any employee litigation related to the headcount reduction could be costly and prevent management from fully concentrating on the business.

Any future growth would impose significant added responsibilities on members of management, including the need to identify, recruit, maintain and integrate additional employees. Due to our limited resources, we may not be able to effectively manage our operations or recruit and retain qualified personnel, which may result in weaknesses in our infrastructure and operations, risks that we may not be able to comply with legal and regulatory requirements, and loss of employees and reduced productivity among remaining employees. For example, the workforce reduction may negatively impact our clinical, regulatory, technical operations, and commercial functions, should we choose to continue to pursue them, which would have a negative impact on our ability to successfully develop, and ultimately, commercialize our product candidates. Our future financial performance and our ability to develop our product candidates or additional assets will depend, in part, on our ability to effectively manage any future growth or restructuring, as the case may be.

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We may become involved in litigation, including securities class action litigation, that could divert management’s attention and harm the Company’s business, and insurance coverage may not be sufficient to cover all costs and damages.

In the past, litigation, including securities class action litigation, has often followed certain significant business transactions, such as the sale of a company or announcement of any other strategic transaction, or the announcement of negative events, such as negative results from clinical trials. These events may also result in investigations by the SEC or other governmental agencies. We may be exposed to such litigation even if no wrongdoing occurred. Litigation is usually expensive and diverts management’s attention and resources, which could adversely affect our business and cash resources and our ability to consummate a potential strategic transaction or the ultimate value our stockholders receive in any such transaction.

RISKS RELATED TO OUR BUSINESS

We received a Delisting Determination from Nasdaq. Delisting could prevent us from maintaining an active, liquid and orderly trading market for our common stock and may materially and adversely impact our ability to consummate certain strategic transactions.

Our ability to publicly or privately sell equity securities and the liquidity of our common stock could be adversely affected if we are delisted from the Nasdaq Capital Market or if we are unable to transfer our listing to another stock market. On January 4, 2023, we were notified by The Nasdaq Stock Market LLC, or Nasdaq, that we were in breach of Listing Rule 5450(a)(1), or the Minimum Bid Price Rule, for continued listing on the Nasdaq Global Select Market because the minimum bid price of our listed securities for 30 consecutive business days had been less than $1 per share. In accordance with Nasdaq Listing Rule 5810(c)(3)(A), or the Compliance Period Rule, we were provided a period of 180 calendar days, or until July 3, 2023, or the Compliance Date, to regain compliance with the Bid Price Requirement. On June 22, 2023, we applied to transfer our listing from the Nasdaq Global Select Market to the Nasdaq Capital Market, or the Transfer. On July 5, 2023, Nasdaq notified us that the Transfer was approved, and that, in connection with the Transfer, we were eligible for an additional 180 calendar day period, or until January 2, 2024, or the Extended Compliance Date, to regain compliance with the Minimum Bid Price Rule.

On November 8, 2023, we received the Delisting Determination notifying us that, because the closing bid price for our common stock was below $0.10 per share for 10 consecutive trading days during the Extended Compliance Period, the Staff has determined to suspend trading of our common stock on Nasdaq, effective November 17, 2023, and file a Form 25-NSE with the SEC to remove our common stock from listing and registration under the Securities Exchange Act of 1934, as amended, unless we timely request an appeal of the Delisting Determination to the Panel. On November 14, 2023, we timely filed a notice requesting a hearing before the Panel to appeal the Delisting Determination. A hearing was initially scheduled for February 15, 2024 and subsequently rescheduled to January 25, 2024. Our common stock continued to trade on the Nasdaq Capital Market Exchange, or the Exchange, under the symbol "TCRT" during this time. Following the hearing, on February 5, 2024, the Panel granted our request to continue listing on the Exchange subject to certain conditions until February 15, 2024. These conditions included the completion of the already shareholder approved 1-for-15 reverse stock split and compliance with the Minimum Bid Price Rule for ten consecutive trading days. We were required to provide prompt notification to the Panel of any "significant" events during the exception period. We executed this reverse stock split on January 31, 2024. On February 16, 2024, we were notified by Nasdaq that we had regained compliance with the Minimum Bid Price Rule. While we are now in compliance, we are now subject to a Mandatory Panel Monitor until February 16, 2025. If we fail to comply with the Minimum Bid Price Rule during this period, we will not be permitted to provide the Staff with a compliance plan and Staff will not be permitted to grant extra time to us to regain compliance. In addition, we would be issued a Delist Determination Letter with the opportunity to request a new hearing with the initial Panel, or a newly convened Hearings Panel if the initial Panel is not available.

If our common stock is delisted by Nasdaq, it could lead to a number of negative implications, including an adverse effect on the price of our common stock, deterring broker-dealers from making a market in or otherwise seeking or generating interest in our common stock, increased volatility in our common stock, reduced liquidity in our common stock, the loss of federal preemption of state securities laws and greater difficulty in obtaining financing. Delisting could also cause a loss of confidence of our customers, collaborators, vendors, suppliers and employees, which could harm our business and future prospects.

If our common stock is delisted by Nasdaq, the price of our common stock may decline, and although our common stock may be eligible to trade on the OTC Bulletin Board, another over-the-counter quotation system, or on the pink sheets, an investor may find it more difficult to dispose of their common stock or obtain accurate quotations as to the market value of our common stock. If our common stock is delisted from Nasdaq, trading in our securities may be subject to the SEC’s “penny stock” rules. These “penny stock” rules will require brokers trading in our common stock to adhere to more stringent rules and possibly result in a reduced level of trading activity in the secondary trading market for our common stock. The additional burdens imposed upon broker-dealers by these requirements may discourage broker-dealers from recommending transactions in our securities, which could severely limit the liquidity of our securities and consequently adversely affect the market price for our securities. Furthermore, if our common stock is delisted, we would expect it to have an adverse impact on our ability to consummate certain strategic alternatives.

Further, if our common stock is delisted, we would incur additional costs under state blue sky laws in connection with any sales of our securities. These requirements could severely limit the market liquidity of our common stock and the ability of our stockholders to sell our common stock in the secondary market.

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We do not have approval by our shareholders for a second reverse stock split of our common stock to enable the Board of Directors to respond to a Panel if we fail to comply with the Minimum Bid Price Rule during the monitor period.

While our stockholders approved a reverse stock split of the issued and outstanding shares of our common stock, our treasury stock, and a proportionate reduction in the shares of our authorized common stock, if needed in the discretion of our Board of Directors to regain compliance with the Minimum Bid Price Rule, at a ratio between the range of 1-for-5 and 1-for-15, inclusive, at any time on or before June 6, 2024, we have already executed this approved stock split to achieve compliance to the November delisting notice. If we receive a second delisting notice during the monitor period, we have to convene a special shareholder meeting to obtain approval for another reverse stock split. There is no guarantee that the Panel will grant us an exception to convene such a meeting. There is no guarantee that the shareholders would approve another reserve stock split.

Shareholders may not approve another reverse stock split.

Even if we are able to convene a shareholders meeting within the time allowed by the Panel should we fail to comply with the Minimum Bid Price Rule during the monitor period, there is no guarantee that the shareholders would approve a reverse stock split. Failure to acquire shareholder approval of a second reverse stock split would negatively effect our ability to regain compliance with the Minimum Bid Price Rule, which would result in our common stock being delisted from the Exchange.

Even if we do get approval and effectuate a second reverse stock split, the trading price of our common stock may not meet the Minimum Bid Price Rule

If we do effect a second reverse stock split, there can be no assurance that the market price per new share of our common stock after the reverse stock split will remain unchanged or increase in proportion to the reduction in the number of old shares of our common stock outstanding before the reverse stock split. Other factors, such as our financial results, market conditions and the market perception of our business may adversely affect the market price of our common stock and there can be no assurance that a reverse stock split, if completed, will result in the intended benefits, that the market price of our common stock will increase in proportion to the reduction in the number of shares of our common stock outstanding before the reverse stock split or that the market price of our common stock will not decrease in the future. If the market price of our common stock does not increase the price per share of our common stock above Nasdaq’s minimum bid price threshold of $1.00 per share or if the market price of our common stock does not remain above Nasdaq’s minimum bid price threshold of $1.00 per share, our common stock may still be delisted from Nasdaq. There is also no guarantee that the Panel agrees that implementing a reverse stock split warrants reversing the Staff's delisting determination, regardless of the price at which our common stock would trade following the split.

In light of the recent reverse stock split, or if we implement a second reverse stock split during the monitor period, liquidity of our common stock may be materially and adversely affected.

In light of our recent reverse stock split, or if we have to effect a second reverse stock split to avoid a delisting pursuant to a new Delisting Determination during the monitor period, the liquidity of the shares of our common stock may be affected materially and adversely by any such reverse stock split given the reduced number of shares of common stock that will be outstanding following the reverse stock split, especially if the market price of our common stock does not increase as a result of the reverse stock split.

Following any reverse stock split, the resulting market price of our common stock may not attract new investors and may not satisfy the investing requirements of those investors. Although we believe a higher market price of our common stock may help generate greater or broader investor interest, there can be no assurance that the reverse stock split will result in a share price that will attract new investors, including institutional investors. In addition, there can be no assurance that the market price of our common stock will satisfy the investing requirements of those investors. As a result, the trading liquidity of our common stock may not necessarily improve.

We may identify material weaknesses in the future or otherwise fail to maintain an effective system of internal controls, which may result in material misstatements of our financial statements or could have a material adverse effect on our business and trading price of our securities.

We are subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, or the Exchange Act, the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, and the rules and regulations of the Nasdaq Capital Market. Pursuant to Section 404 of the Sarbanes-Oxley Act, we are required to perform system and process evaluation and testing of our internal control over financial reporting to allow our management to report on the effectiveness of our internal control over financial reporting. We may also be required to have our independent registered public accounting firm issue an opinion on the effectiveness of our internal control over financial reporting on an annual basis.

We have identified material weaknesses in our internal control over financial reporting in the past. A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of our financial statements will not be prevented or detected on a timely basis.

Although the material weaknesses identified in the past have been remediated, we cannot assure you that any measures we have taken or may take in the future will be sufficient to avoid potential future material weaknesses. If we are unable to successfully remediate any future material weakness and maintain effective internal controls, we may not have adequate, accurate or timely financial information, and we may be unable to meet our reporting obligations as a public company, including the requirements of the Sarbanes-Oxley Act, we may be unable to accurately

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report our financial results in future periods, or report them within the timeframes required by the requirements of the SEC, Nasdaq or the Sarbanes-Oxley Act. Failure to comply with the Sarbanes-Oxley Act, when and as applicable, could also potentially subject us to sanctions or investigations by the SEC or other regulatory authorities. Any failure to maintain or implement required new or improved controls, or any difficulties we encounter in their implementation, could result in the identification of additional material weaknesses or significant deficiencies, cause us to fail to meet our reporting obligations or result in material misstatements in our financial statements. Furthermore, if we cannot provide reliable financial reports or prevent fraud, our business, financial condition, results of operations, cash flows and prospects could be materially harmed and investors could lose confidence in our reported financial information.

The development and commercialization of non-viral adoptive TCR-T cell therapies could be considered a new approach to cancer treatment, the successful development of which is subject to significant challenges.

We have employed technologies such as the technology licensed from MD Anderson pursuant to the MD Anderson License, described above, from Precigen, pursuant to the A&R License Agreement, and from the NCI, pursuant to the Patent License described above, to pursue the development and commercialization of non-viral cellular therapies based on T-cells and TCRs, targeting solid tumor malignancy. Because this is a new approach to cancer immunotherapy and cancer treatment generally, developing and commercializing product candidates is subject to a number of challenges, including:

•obtaining regulatory approval from the FDA and other regulatory authorities that have very limited experience with the commercial development of genetically modified T-cell therapies for cancer;

•designing and conducting our clinical trials using this new approach or selecting the appropriate TCRs in a way that may lead to optimal results;

•identifying and manufacturing appropriate TCRs from either the patient or third parties that can be administered to the patient;

•developing and deploying consistent and reliable processes for engineering a patient’s and/or donor’s T-cells ex vivo and infusing the T cells back into the patient;

•conditioning patients with chemotherapy in conjunction with delivery of the potential products, which may increase the risk of adverse side effects of the chemotherapy itself or of the potential products;

•educating medical personnel regarding the potential side effect profile of each of the potential products, such as the potential adverse side effects related to cytokine release;

•addressing any competing technological and market developments;

•developing processes for the safe administration of these potential products, including long-term follow-up for all patients who receive the potential products;

•sourcing additional clinical and, if approved, commercial supplies for the materials used to manufacture and process the potential products;

•developing a manufacturing process with a cost of goods that allows for an attractive return on investment;

•establishing sales and marketing capabilities after obtaining any regulatory approval to gain market acceptance;

•developing therapies for types of cancers beyond those addressed by the current potential products;

•maintaining and defending the intellectual property rights relating to any products we develop;

•not infringing the intellectual property rights, in particular, the patent rights, of third parties, including competitors, such as those developing T-cell therapies; and

•unless we revoke the notice to terminate the Patent License or subsequently acquire substantially similar rights, our inability to use the technology currently licensed to us pursuant to the Patent License.

Should we resume our clinical programs, we cannot assure you that we will be able to successfully address these challenges, which could prevent us from achieving our research, development and commercialization goals. In addition, these challenges may diminish the value of our assets in the execution of any strategic alternative.

Should we resume development of our product candidates, we will need to recruit, hire and retain qualified personnel.

Following our strategic reprioritization in August 2023, we have reduced our workforce by approximately 95% to date. Our cash conservation activities may yield unintended consequences, such as attrition beyond our planned reduction in workforce and reduced employee morale, which may cause remaining employees and consultants to seek alternative opportunities. The reductions in force included employees responsible for key aspects of our clinical and other development programs.

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Should we, in the future, resume development of our product candidates, we may not be able to attract or retain qualified management and commercial, scientific, manufacturing and clinical personnel due to the intense competition for qualified personnel among biotechnology, pharmaceutical and other businesses. If we are not able to attract and retain necessary personnel to accomplish our business objectives, we may experience constraints that will significantly impede the achievement of our development objectives, our ability to raise additional capital and our ability to implement our business strategy.

The recent termination of our licenses and research and development agreement with the National Cancer Institute could significantly limit our ability to resume our clinical trial or begin new ones focused on TCR-T.

We have terminated our TCR license with the National Cancer Institute. This will affect our ability to quickly resume TCR-T-based clinical trials as we will need to renegotiate this license or obtain approval from FDA to use TCRs that we validate internally. We may not obtain such approval or be able to validate TCRs internally quickly or at all, significantly hindering our ability to resume our clinical trial.

Any termination of our licenses with Precigen or MD Anderson or our research and development agreements with MD Anderson could result in the loss of significant rights and could significantly harm our ability to develop and commercialize our product candidates.

Our clinical programs, if resumed, depend on patents, know-how, and proprietary technology that are licensed from others, particularly MD Anderson and Precigen, as well as the contributions by MD Anderson under our research and development agreements. Any termination of these licenses or research and development agreements could result in the loss of significant rights and could harm our ability to develop or monetize our product candidates. Disputes may also arise between us and these licensors regarding intellectual property subject to a license agreement, including those relating to:

•the scope of rights granted under the applicable license agreement and other interpretation-related issues;

•whether and the extent to which our technology and processes, and the technology and processes of Precigen, MD Anderson and our other licensors, infringe intellectual property of the licensor that is not subject to the applicable license agreement;

•our right to sublicense patent and other rights to third parties pursuant to our relationships with our licensors and partners;

•whether we are complying with our diligence obligations with respect to the use of the licensed technology in relation to our development and commercialization of our potential products under the MD Anderson License and the A&R License Agreement;

•whether or not our partners are complying with all of their obligations to support our programs under licenses and research and development agreements; and

•the allocation of ownership of inventions and know-how resulting from the joint creation or use of intellectual property by our licensors and by us.

If disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements, particularly with MD Anderson and Precigen, on acceptable terms, we may be unable to successfully monetize the affected potential products. On October 27, 2023, we provided the NCI the requisite notice of our intent to terminate the Patent License, effective 60 days from such notice, which is now terminated. If we are unable to acquire the rights from the NCI that we currently have under the Patent License following its termination, on terms acceptable to us or at all, our clinical development programs will be negatively impacted. We are generally also subject to all of the same risks with respect to protection of intellectual property that we license as we are for intellectual property that we own. If we or our licensors fail to adequately protect this intellectual property, our ability to monetize potential products under our applicable licenses could suffer. There is a substantial amount of litigation involving patents and other intellectual property rights in the biotechnology and pharmaceutical industries, as well as administrative proceedings for challenging patents, including interference, derivation, and reexamination proceedings before the United States Patent and Trademark Office, or USPTO, or oppositions and other comparable proceedings in foreign jurisdictions. Recently, due to changes in U.S. law referred to as patent reform, new procedures including inter partes review and post-grant review have been implemented, which adds uncertainty to the possibility of challenge to our or our licensors’ patents in the future.

We may not be able to retain the rights licensed to us and Precigen by MD Anderson to technologies relating to TCR-T cell therapies and other related technologies.

Under the MD Anderson License, we, together with Precigen, received an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel TCR-T cell therapies as well as either co-exclusive or non-exclusive licenses under certain related technologies. These proprietary methods and technologies, along with others within Precigen's technology suite and licensed to us by Precigen, may help realize the promise of genetically modified TCR-T cell therapies by controlling cell expansion and activation in the body, minimizing off-target and unwanted on-target effects and toxicity while maximizing therapeutic efficacy. The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder or (b) the twentieth anniversary of the date of the MD Anderson License; provided, however, that following the expiration of the term, we and Precigen shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder.

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After 10 years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if we and Precigen are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third-party contract if we and Precigen are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by us or Precigen, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both us or Precigen and may be terminated by the mutual written agreement of us, Precigen and MD Anderson.

Should we in the future resume development of our product candidates, there can be no assurance that we will be able to successfully perform under the MD Anderson License or regain our terminated rights under the Patent License and if the MD Anderson License is terminated, we may be prevented from achieving our business objectives.

Should we resume development of our product candidates, we may not be able to commercialize them, generate significant revenues, or attain profitability.

To date, none of our product candidates have been approved for commercial sale in any country. The process to develop, obtain regulatory approval for, and commercialize potential product candidates is long, complex and costly. Should we resume clinical development, unless and until we receive approval from the FDA and/or other foreign regulatory authorities for our product candidates, we cannot sell our products and will not have product revenues. Even if we should in the future resume development of our product candidates and obtain regulatory approval for one or more of our product candidates, if we are unable to successfully commercialize our products, we may not be able to generate sufficient revenues to achieve or maintain profitability or to continue our business without raising significant additional capital, which may not be available. Our failure to achieve or maintain profitability could negatively impact the trading price of our common stock.

Our operating history makes it difficult to evaluate our business and prospects.

We have not previously completed any pivotal clinical trials, submitted a BLA or demonstrated an ability to perform the functions necessary for the successful commercialization of any product candidates. If we resume development of our product candidates, successful commercialization of any product candidates will require us to perform a variety of functions, including:

•Continuing to undertake preclinical development and clinical trials;

•Participating in regulatory approval processes;

•Formulating and manufacturing products; and

•Conducting sales and marketing activities.

Our operations have been limited to organizing and staffing our company, acquiring, developing and securing our proprietary product candidates and undertaking preclinical and clinical trials of our product candidates. These operations provide a limited basis for you to assess our ability to commercialize our product candidates and the advisability of investing in our securities.

Our business subjects us to the risk of liability claims associated with the use of hazardous materials and chemicals.

Our contract research and development activities have involved and may in the future involve the controlled use of hazardous materials and chemicals. Although we believe that our safety procedures for using, storing, handling and disposing of these materials complied with federal, state and local laws and regulations, we cannot completely eliminate the risk of accidental injury or contamination from these materials. In the event of such an accident, we could be held liable for any resulting damages, and any liability could have a materially adverse effect on our business, financial condition, results of operations, cash flows and prospects. In addition, the federal, state and local laws and regulations governing the use, manufacture, storage, handling and disposal of hazardous or radioactive materials and waste products may require our contractors to incur substantial compliance costs that could materially adversely affect our business, financial condition, results of operations, cash flows and prospects.

We may incur substantial liabilities and may be required to limit commercialization of our products in response to product liability lawsuits.

The testing and marketing of medical products entail an inherent risk of product liability, and we will face an even greater risk if we commercially sell any medicines that we may develop. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit commercialization of our products, if approved. Even a successful defense would require significant financial and management resources. Regardless of the merit or eventual outcome, liability claims may result in:

•Decreased demand for our product candidates;

•Injury to our reputation;

•Withdrawal of clinical trial participants;

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•Initiation of investigations by regulators;

•Withdrawal of prior governmental approvals;

•Costs of related litigation;

•Substantial monetary awards to patients;

•Product recalls;

•Loss of revenue;

•The inability to commercialize our product candidates; and

•A decline in our share price.

Although we currently carry clinical trial insurance and product liability insurance which we believe to be reasonable, it may not be adequate to cover all liability that we may incur. An inability to renew our policies or to obtain sufficient insurance at an acceptable cost could prevent or inhibit the commercialization of pharmaceutical products that we develop, alone or with collaborators.

Business disruptions could seriously harm our future revenue and financial condition and increase our costs and expenses.

Our operations, and those of our clinical investigators, contractors and consultants, are based primarily in Houston, Texas. These operations could be subject to power shortages, telecommunications failures, water shortages, hurricanes, floods, earthquakes, fires, extreme weather conditions, medical epidemics and other natural or man-made disasters or business interruptions, for which we maintain customary insurance policies that we believe are appropriate. The occurrence of any of these business disruptions could seriously harm our operations and financial condition and increase our costs and expenses.

We relied and, should we in the future resume development of our product candidates, will rely significantly on information technology and any failure, inadequacy, interruption or security lapse of that technology or loss of data, including any cybersecurity incidents, could compromise sensitive information related to our business, prevent us from accessing critical information or expose us to liability which could significantly harm our ability to operate our business effectively and adversely affect our business and reputation.

In the ordinary course of our business, we, our CROs and other third parties on which we rely collected and stored sensitive data, including legally protected patient health information, personally identifiable information about our employees, intellectual property, and proprietary business information. We manage and maintain our applications and data utilizing on-site systems. These applications and data encompass a wide variety of business-critical information including research and development information and business and financial information.

The secure processing, storage, maintenance and transmission of this critical information is vital to our operations and business strategy. Despite the implementation of security measures, our internal computer systems and those of third parties with which we contract are vulnerable to damage from cyber-attacks, computer viruses, breaches, unauthorized access, interruptions due to employee error or malfeasance or other disruptions, or damage from natural disasters, terrorism, war and telecommunication and electrical failures. Any such event could compromise our networks and the information stored there could be accessed by unauthorized parties, publicly disclosed, lost or stolen. Although we have measures in place that are designed to detect and respond to such security incidents and breaches of privacy and security mandates, we cannot guarantee that those measures will be successful in preventing any such security incident. Any such access, disclosure or other loss of information could result in legal claims or proceedings, liability under laws that protect the privacy of personal information, government enforcement actions and regulatory penalties. Such legal claims or proceedings, liability or government enforcement actions may make it more difficult to consummate opportunities presented to us during our search for a strategic alternative. Unauthorized access, loss or dissemination could also disrupt our operations, including our ability to resume research, development and commercialization activities, process and prepare Company financial information, manage various general and administrative aspects of our business and damage our reputation, in addition to possibly requiring substantial expenditures of resources to remedy, any of which could adversely affect our business. In addition, there can be no assurance that we will promptly detect any such disruption or security breach, if at all. If the technology supporting our hunTR discovery engine were to experience a cyber-incident resulting in the disclosure or theft of our proprietary screening software or library of TCRs, its value may decrease and our business, or ability to consummate a strategic transaction, may be materially and negatively impacted. While we are not aware of any such material system failure, accident or security breach to date, to the extent that any disruption or security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability and our search for a strategic alternative negatively impacted.

RISKS RELATED TO THE CLINICAL TESTING, GOVERNMENT REGULATION AND MANUFACTURING OF OUR PRODUCT CANDIDATES

Should we resume development of our product candidates, we may encounter difficulties enrolling patients in our clinical trials, and our clinical development activities could be delayed or otherwise materially and adversely affected.

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We have experienced, and may in the future experience, difficulties in patient enrollment in our TCR-T Library Phase 1/2 Trial and any future clinical trials for a variety of reasons. The timely completion of clinical trials in accordance with their protocols depends on, among other things, our ability to enroll a sufficient number of patients who remain in the clinical trial until its conclusion. The enrollment of patients depends on many factors, including:

•Our reputation as a result of halting our ongoing clinical development;

•The patient eligibility criteria defined in the clinical trial protocol;

•The size of the patient population required for analysis of the clinical trial’s primary endpoints;

•The proximity of patients to clinical trial sites;

•The number of clinical trial sites;

•The design of the clinical trial;

•Our ability to recruit and retain clinical trial investigators with the appropriate competencies and experience;

•Our ability to obtain and maintain patient consents;

•Reporting of the preliminary results of any of our clinical trials;

•Patient insurance approvals of trial participation; and

•The risk that patients enrolled in clinical trials will drop out of the clinical trials before the manufacturing and infusion of our product candidates or clinical trial completion.

Should we resume clinical development, our clinical trials would compete with other clinical trials for product candidates that are in the same therapeutic areas as our product candidates, and this competition could reduce the number and types of patients available to us because some of our potential patients may instead opt to enroll in a clinical trial being conducted by one of our competitors. In addition, patients may be unwilling to participate in our studies because of negative publicity from adverse events in the biotechnology industry or for other reasons. Since the number of qualified clinical investigators is limited, we would expect to conduct some of our clinical trials at the same clinical trial sites that some of our competitors use if we resume development of our product candidates, which will reduce the number of patients who are available for our clinical trials at such clinical trial sites. Moreover, because our product candidates represent a departure from more commonly used methods for cancer treatment, potential patients and their doctors may be inclined to use conventional therapies, such as chemotherapy and hematopoietic stem cell transplantation, rather than enroll patients in any future clinical trial. Additionally, because our product candidates address patients with relapsed/refractory cancer, the patients are typically in the late stages of their disease and may experience disease progression independent from our product candidates, making them unevaluable for purposes of the clinical trial, which would require additional patient enrollment.

Delays in completing patient enrollment may result in increased costs or may affect the timing or outcome of our ongoing and planned clinical trials, which could prevent completion or commencement of these clinical trials and adversely affect our ability to advance the development of our product candidates.

Our product candidates are subject to extensive regulation and compliance, which is costly and time consuming, and such regulation may cause unanticipated delays or prevent the receipt of the required approvals to commercialize our product candidates, should we resume development.

The clinical development, manufacturing, labeling, packaging, storage, record-keeping, advertising, promotion, import, export, marketing, distribution and adverse event reporting, including the submission of safety and other information, of our product candidates are subject to extensive regulation by the FDA in the United States and by comparable foreign regulatory authorities in foreign markets. The process of obtaining regulatory approval is expensive and often takes many years following the commencement of clinical trials. Approval policies or regulations may change, and the FDA has substantial discretion in the drug approval process, including the ability to delay, limit or deny approval of a product candidate for many reasons. Regulatory approval is never guaranteed.

Prior to obtaining approval to commercialize a product candidate in the United States or abroad, we or our collaborators must demonstrate with substantial evidence from adequate and well-controlled clinical trials, and to the satisfaction of the FDA or comparable foreign regulatory authorities, that such product candidates are safe and effective, or with respect to a biological product candidate, safe, pure and potent, for their intended uses.

The FDA or comparable foreign regulatory authorities can delay, limit or deny approval of a product candidate for many reasons, including:

•Such authorities may disagree with the design or implementation of our or our collaborators’ clinical trials;

•Negative or ambiguous results from our clinical trials or results may not meet the level of statistical significance required by the FDA or comparable foreign regulatory agencies for approval;

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•Serious and unexpected drug-related side effects may be experienced by participants in our clinical trials or by individuals using drugs or biologics similar to our therapeutic product candidates;

•Such authorities may not accept clinical data from trials which are conducted at clinical facilities or in countries where the standard of care is potentially different from that of the United States;

•We, or any of our collaborators, may be unable to demonstrate that a product candidate is safe and effective, and that the therapeutic product candidate’s clinical and other benefits outweigh its safety risks;

•We may be unable to demonstrate to the satisfaction of such authorities that our companion diagnostics are suitable to identify appropriate patient populations;

•Such authorities may disagree with our interpretation of data from preclinical studies or clinical trials;

•Such authorities may not agree that the data collected from clinical trials of our product candidates are acceptable or sufficient to support the submission of a BLA, New Drug Application, premarket approval, or PMA, or other submission or to obtain regulatory approval in the United States or elsewhere, and such authorities may impose requirements for additional preclinical studies or clinical trials;

•Such authorities may disagree regarding the formulation, labeling and/or the specifications of our product candidates;

•Approval may be granted only for indications that are significantly more limited than what we apply for and/or with other significant restrictions on distribution and use;

•Such authorities may find deficiencies in the manufacturing processes, test procedures and specifications or facilities of our third-party manufacturers with which we or any of our current or future collaborators contract for clinical and commercial supplies;

•Regulations and approval policies of such authorities may significantly change in a manner rendering our or any of our potential future collaborators’ clinical data insufficient for approval; or

•Such authorities may not accept a submission due to, among other reasons, the content or formatting of the submission.

This lengthy approval process, as well as the unpredictability of the results of clinical trials, may result in our failing to obtain regulatory approval to market any of our product candidates should we resume clinical development, which would significantly harm our business, financial condition, results of operations, cash flows and prospects. In addition, even if we obtain regulatory approval of our product candidates, regulatory authorities may approve any of our product candidates for fewer or more limited indications than we request and may impose significant limitations in the form of narrow indications, warnings, or a Risk Evaluation and Mitigation Strategy, or REMS.

Events raising questions about the safety of certain marketed biopharmaceuticals may result in increased cautiousness by the FDA and comparable foreign regulatory authorities in reviewing new drugs or biologics based on safety, efficacy or other regulatory considerations and may result in significant delays in obtaining regulatory approvals. Any delay in obtaining, or inability to obtain, applicable regulatory approvals would prevent us or any of our potential future collaborators from commercializing our product candidates.

We have halted development of our product candidates very early in our development efforts. Our most advanced product candidates were only in an early-stage clinical trial, which is very expensive and time-consuming. We cannot be certain if or when we will be able to submit a BLA to the FDA and the delay, or any failure, in completing clinical trials for our product candidates could significantly harm our business.

Our most advanced product candidates were in a Phase 1/2 trial when we ceased development activity and will require extensive clinical testing should we resume development. Human clinical trials are very expensive and difficult to design, initiate and implement, in part because they are subject to rigorous regulatory requirements. Failure can occur at any stage of a clinical trial, and we can encounter problems that cause us to delay the start of, abandon or repeat clinical trials. Some factors which may lead to a delay in the commencement or completion of our clinical trials, if resumed, include: requests for additional nonclinical data from regulators, unforeseen safety issues, dosing issues, lack of effectiveness during clinical trials, difficulty recruiting or monitoring patients, or difficulty manufacturing clinical products, among other factors.

As they enter later stages of development, product candidates generally will become subject to more stringent regulatory requirements, including the FDA’s requirements for chemistry, manufacturing and controls for product candidates entering Phase 3 clinical trials. There is no guarantee the FDA will allow us or any potential licensee to commence Phase 3 clinical trials for product candidates studied in earlier clinical trials.

If the FDA does not allow our product candidates to enter later stage clinical trials or requires changes to the formulation or manufacture of our product candidates before commencing Phase 3 clinical trials, the ability to further develop, or seek approval for, such product candidates may be materially impacted. As such, if we resume clinical development of our product candidates, we cannot predict with any certainty if or when we might submit a BLA for regulatory approval of our product candidates or whether such a BLA will be accepted. Because we do not anticipate generating significant revenues unless and until we submit one or more BLAs and thereafter obtain requisite FDA approvals, the

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timing of our BLA submissions and FDA determinations regarding approval thereof will directly affect if and when we are able to generate significant revenues.

In addition, we have halted development of our product candidates. There is an additive degree of risk to any development program that is paused because the time to restart the program and the associated expense may be longer and more costly than previously anticipated. It may also not be possible to restart the program altogether.

Our product candidates may cause undesirable side effects or have other properties that could delay or prevent their regulatory approval, limit the commercial profile of an approved label or result in significant negative consequences following any potential marketing approval.

As with many pharmaceutical and biological products, treatment with our product candidates, if resumed, may produce undesirable side effects or adverse reactions or events, including potential adverse side effects related to cytokine release. If our product candidates or similar products or product candidates under development by third parties demonstrate unacceptable adverse events, we may be required to halt or delay further clinical development of our product candidates, should we resume it. The FDA or foreign regulatory authorities could order us to cease further development of or deny approval of our product candidates for any or all targeted indications. If a serious adverse event were to occur in a trial, the FDA may place a hold on the clinical trial.

The product-related side effects could affect patient recruitment or the ability of enrolled patients to resume and complete the trial or result in potential product liability claims. In addition, these side effects may not be appropriately or timely recognized or managed by the treating medical staff, particularly outside of the institutions that collaborate with us, as toxicities resulting from our novel technologies may not be normally encountered in the general patient population and by medical personnel. Should we resume product development or begin commercialization, we expect to have to train medical personnel using our product candidates to understand their side effect profiles. Inadequate training in recognizing or managing the potential side effects of our product candidates could result in adverse effects to patients, including death. Additionally, if one or more of our product candidates receives marketing approval, and we or others later identify undesirable side effects caused by such products, including during any long-term follow-up observation period recommended or required for patients who receive treatment using our product candidates, a number of potentially significant negative consequences could result, including:

•regulatory authorities may withdraw approvals of such product;

•regulatory authorities may require additional warnings on the product’s label;

•we may be required to create a risk evaluation and mitigation strategy plan, which could include a medication guide outlining the risks of such side effects for distribution to patients, a communication plan for healthcare providers and/or other elements to assure safe use;

•we could be sued and held liable for harm caused to patients; and

•our reputation may suffer.

Any of the foregoing could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved. Furthermore, any of these occurrences may harm our business, financial condition and prospects significantly.

Our cellular therapy immuno-oncology product candidates relied on the availability of reagents, specialized equipment and other specialty materials and infrastructure, which may not be available to us on acceptable terms or at all if we resume our clinical trial. For some of these reagents, equipment and materials, we relied or may rely on sole source vendors or a limited number of vendors, which could significantly impair our ability to manufacture and supply our products, should we resume these activities.

Manufacturing our product candidates required many reagents, which are substances used in our manufacturing processes to bring about chemical or biological reactions, and other specialty materials and equipment, some of which are manufactured or supplied by small companies with limited resources and experience to support commercial biologics production. We have depended on a limited number of vendors for certain materials and equipment used in the manufacture of our product candidates, including DNA plasmids, which we used as the vector to insert our TCRs into human T cells. Should we resume product manufacturing, some or all of these suppliers may not have the capacity to support commercial products manufactured under current good manufacturing practices by biopharmaceutical firms or may otherwise be ill-equipped to support our needs, should we resume manufacturing. We also do not have supply contracts with some of these suppliers and may not be able to obtain supply contracts with them on acceptable terms or at all. Accordingly, we may experience significant delays in receiving key materials and equipment to support clinical or commercial manufacturing, should we resume those activities.

For some of these reagents, equipment, infrastructure, and materials, we may rely on sole source vendors or a limited number of vendors. An inability to source product from any of these suppliers, or source product on commercially reasonable terms, which could be due to, among other things, regulatory actions or requirements affecting the supplier, adverse financial or other strategic developments experienced by a supplier, labor disputes or shortages, unexpected demands, supply chain issues or quality issues, could materially and adversely affect our ability to satisfy demand for our product candidates, which could adversely and materially affect our ability to conduct clinical trials, should we resume them, which could significantly harm our business.

In addition, some of the reagents and products used by us may be stored at a single vendor. The loss of materials located at a single vendor, or the failure of such a vendor to manufacture clinical product in accordance with our specifications, would impact our ability to conduct clinical

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trials and continue the development of our products, should we resume it. Further, manufacturing replacement material may be expensive and require a significant amount of time, which may further impact our clinical programs.

If we resume developing and scaling our manufacturing process, we expect that we will need to obtain additional rights to and supplies of certain materials and equipment to be used as part of that process. We may not be able to maintain rights to such materials on commercially reasonable terms, or at all, and if we are unable to alter our process in a commercially viable manner to avoid the use of such materials or find a suitable substitute, it would have a material adverse effect on our business. Even if we are able to alter our process so as to use other materials or equipment, such a change may lead to a delay in clinical development and/or commercialization plans. If such a change occurs for a product candidate that is already in clinical trials, the change may require us to perform both ex vivo comparability studies and to collect additional data from patients prior to undertaking more advanced clinical trials.

We have limited experience producing and supplying our product candidates. We may be unable to consistently manufacture our product candidates to the necessary specifications or in quantities necessary to treat patients in clinical trials, should we resume the activities.

We have limited experience in biopharmaceutical manufacturing. In 2021, we began manufacturing our product candidates at our in-house current good manufacturing practices, or cGMP, manufacturing facility at our leased headquarters in Houston, Texas. In connection with our exploration of strategic alternatives, we have halted manufacturing of our product candidates and eliminated positions relating to the same. Accordingly, should we elect to in the future, our ability to resume manufacturing our product candidates will depend on our hiring and retaining personnel with the appropriate background and training to staff and operate the facility on a daily basis. Should we be unable to hire or retain these individuals, we may need to train additional personnel to fill the needed roles or engage with external contractors. There are a small number of individuals with experience in cell therapy and the competition for these individuals is high.

Specifically, the operation of a cell-therapy manufacturing facility is a complex endeavor requiring knowledgeable individuals who have successful previous experience in cleanroom environments. Cell therapy facilities, like other biological agent manufacturing facilities, require appropriate commissioning and validation activities to demonstrate that they operate as designed. Additionally, each manufacturing process must be proven through the performance of process validation runs to guarantee that the facility, personnel, equipment, and process work as designed. Although we have developed our own manufacturing processes using an in-house team, there is timing risk associated with increased in-house product manufacture, including as a result of implementing the Plan.

The manufacture of our product candidates is complex and requires significant expertise and capital investment, including the development of advanced manufacturing techniques and process controls. Manufacturers of cell therapy products often encounter difficulties in production, particularly in scaling out and validating initial production and ensuring the absence of contamination. These include difficulties with production costs and yields, quality control, including stability of the product, quality assurance testing, operator error, shortages of qualified personnel, as well as compliance with strictly enforced federal, state and foreign regulations. It is possible that stability or other issues relating to the manufacture of our product candidates could occur in the future. Before we halted clinical development, we had amended our clinical trial IND to use cryopreservation-based storage of clinical products. This process is new and should we resume clinical development and in-house manufacturing, we may experience manufacturing failures or difficulties producing sufficient quantities of our clinical products as a result of this change.

Our product candidates have been manufactured on a patient-by-patient basis. Delays in manufacturing could adversely impact the treatment of each patient and may discourage participation in clinical trials should clinical development be resumed. We have not manufactured our clinical trial product candidates on a large scale and may not be able to achieve large scale clinical trial or commercial manufacturing and processing on our own to satisfy expected clinical trial or commercial demands for any of our product candidates, should development resume in the future. The manufacturing processes employed by us may not result in product candidates that will be safe and effective. If we are unable to manufacture sufficient number of TCR-T cells for our product candidates, development efforts would be delayed, which would adversely affect our business and prospects.

Manufacturing operations are subject to review and oversight by the FDA. If we resume manufacturing operations, we will be subject to ongoing periodic unannounced inspection by the FDA, the Drug Enforcement Administration and corresponding state agencies to ensure strict compliance with cGMP and other government regulations. Our license to manufacture product candidates is subject to continued regulatory review.

We do not yet have sufficient information to reliably estimate the cost of commercial manufacturing and processing of our product candidates. The actual cost to manufacture and process our product candidates could materially and adversely affect the commercial viability of our product candidates. As a result, we may never be able to develop a commercially viable product.

We also may fail to manage the logistics of collecting and shipping patient material to our manufacturing site and shipping the product candidate back to the patient. Logistical and shipment delays and problems, whether or not caused by us or our vendors, could prevent or delay the delivery of product candidates to patients, should we resume the trial.

We may have difficulty validating our manufacturing process as we manufacture our product candidates from an increasingly diverse patient population for our clinical trials, should we resume these activities.

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During our development of the manufacturing process, our TCR-T cell product candidates have demonstrated consistency from lot to lot and from donor to donor. However, our sample size is small and the starting material used during our preclinical development work came from healthy donors. If our development work is continued, we may encounter unforeseen difficulties due to starting with material from donors who are not healthy, including challenges inherent in harvesting white blood cells from unhealthy patients.

Although we believe our manufacturing process is scalable for clinical development and commercialization, if any of our product candidates are approved or commercialized, we may encounter challenges in validating our process due to the heterogeneity of the product starting material. We cannot guarantee that any other issues relating to the heterogeneity of the starting material will not impact our ability to commercially manufacture our product candidates.

The gene transfer vectors from our Sleeping Beauty system used to manufacture our product candidates may incorrectly modify the genetic material of a patient’s T cells, potentially triggering the development of a new cancer or other adverse events.

Our TCR-T cells were manufactured using our Sleeping Beauty system, a non-viral vector to insert genetic information encoding the TCR construct into the patient’s T cells. The TCR construct was then primarily integrated at thymine-adenine, or TA, dinucleotide sites throughout the patient’s genome and, once expressed as protein, is transported to the surface of the patient’s T cells. Because the gene transfer vector modifies the genetic information of the T cell, there is a theoretical risk that modification will occur in the wrong place in the T cell’s genetic code, leading to vector-related insertional oncogenesis, and causing the T cell to become cancerous. If the cancerous T cell is then administered to the patient, the cancerous T cell could trigger the development of a new cancer in the patient. We used non-viral vectors to insert genetic information into T cells, which we believe have a lower risk of insertional oncogenesis as opposed to viral vectors. However, the risk of insertional oncogenesis remains a concern for gene therapy, and we cannot assure you that it will not occur in any clinical trials of our product candidates. There is also the potential risk of delayed adverse events following exposure to gene therapy products due to persistent biological activity of the genetic material or other components of the vectors used to carry the genetic material. Although our product candidates use non-viral vectors, the FDA has stated that lentiviral vectors possess characteristics that may pose high risks of delayed adverse events. If any such adverse events occur from our non-viral vector, preclinical studies or clinical trials could be halted or delayed, which would have a material adverse effect on our business and operations.

Should we resume development of our product candidates, any product candidate for which we obtain marketing approval could be subject to post-marketing restrictions or withdrawal from the market and we may be subject to penalties if we fail to comply with regulatory requirements or if we experience unanticipated problems with our products, when and if any of them are approved.

Any product candidate for which we obtain marketing approval, along with the manufacturing processes, post-approval clinical data, labeling, advertising and promotional activities for such product, will be subject to continual requirements of and review by the FDA and other regulatory authorities. These requirements include, among other things, submissions of safety and other post-marketing information and reports, registration and listing requirements, cGMP requirements relating to manufacturing, quality control, quality assurance and corresponding maintenance of records and documents, requirements regarding the distribution of samples to physicians and recordkeeping. Even if marketing approval of a product candidate is granted, the approval may be subject to limitations on the indicated uses for which the product may be marketed or to the conditions of approval, including the requirement to implement a REMS, which could include requirements for a restricted distribution system. If any of our product candidates receives marketing approval, the accompanying label may limit the approved uses, which could limit sales of the product.

The FDA may also impose requirements for costly post-marketing studies or clinical trials and surveillance to monitor the safety or efficacy of our approved products. The FDA closely regulates the post-approval marketing and promotion of products to ensure that they are marketed only for the approved indications and in accordance with the provisions of the approved labeling. However, companies may share truthful and not misleading information that is otherwise consistent with the labeling. The FDA imposes stringent restrictions on manufacturers’ communications regarding off-label use and if we market our products outside of their approved indications, we may be subject to enforcement action for off-label marketing. Violations of the Federal Food, Drug and Cosmetic Act relating to the promotion of prescription drugs may lead to investigations alleging violations of federal and state health care fraud and abuse laws, as well as state consumer protection laws.

In addition, later discovery of previously unknown adverse events or other problems with our product candidates, manufacturers or manufacturing processes, or failure to comply with regulatory requirements, may yield various results, including:

•Litigation involving patients taking our product;

•Restrictions on such products, manufacturers or manufacturing processes;

•Restrictions on the labeling or marketing of a product;

•Restrictions on product distribution or use;

•Requirements to conduct post-marketing studies or clinical trials;

•Warning letters;

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•Withdrawal of the products from the market;

•Refusal to approve pending applications or supplements to approved applications that we submit;

•Recall of products;

•Fines, restitution or disgorgement of profits or revenues;

•Suspension or withdrawal of marketing approvals;

•Damage to relationships with existing and potential collaborators;

•Unfavorable press coverage and damage to our reputation;

•Refusal to permit the import or export of our products;

•Product seizure; and

•Injunctions or the imposition of civil or criminal penalties.

Noncompliance with requirements regarding safety monitoring or pharmacovigilance can also result in significant financial penalties. Similarly, failure to comply with U.S. and foreign regulatory requirements regarding the development of products for pediatric populations and the protection of personal health information can also lead to significant penalties and sanctions.

RISKS RELATED TO OUR ABILITY TO COMMERCIALIZE OUR PRODUCT CANDIDATES

Should we resume development of our product candidates, our inability to obtain the necessary U.S. or worldwide regulatory approvals to commercialize any product candidate would cause our business to suffer significantly.

Even if we resume clinical development, we may not be able to obtain the approvals necessary to commercialize our product candidates, or any product candidate that we may acquire or develop in the future for commercial sale. We will need FDA approval to commercialize our product candidates in the United States and approvals from regulatory authorities in foreign jurisdictions equivalent to the FDA to commercialize our product candidates in those jurisdictions. In order to obtain FDA approval of any product candidate, we must submit to the FDA a BLA demonstrating that the product candidate is safe for humans and effective for its intended use. This demonstration requires significant research and animal tests, which are referred to as preclinical studies, as well as human tests, which are referred to as clinical trials. Satisfaction of the FDA’s regulatory requirements typically takes many years, depending upon the type, complexity and novelty of the product candidate, and will require substantial resources for research, development and testing. We cannot predict whether our research, development, and clinical approaches will result in products that the FDA will consider safe for humans and effective for their intended uses. The FDA has substantial discretion in the approval process and may require us to conduct additional preclinical studies and clinical trials or to perform post-marketing studies. The approval process may also be delayed by changes in government regulation, future legislation or administrative action or changes in FDA policy that occur prior to or during our regulatory review. Delays in obtaining regulatory approvals may:

•Delay commercialization of, and our ability to derive product revenues from, our product candidates;

•Impose costly procedures on us; and

•Diminish any competitive advantages that we may otherwise enjoy.

Even if we comply with all FDA requests, the FDA may ultimately reject one or more of our BLAs. We cannot be sure that we will ever obtain regulatory approval for any of our product candidates even if we should resume development in the future. Failure to obtain FDA approval for our product candidates will severely undermine our business by leaving us without a marketable product, and therefore without any potential revenue source, until another product candidate can be developed. There is no guarantee that we will ever be able to develop or acquire another product candidate or that we will obtain FDA approval if we are able to do so.

In foreign jurisdictions, we similarly must receive approval from applicable regulatory authorities before we can commercialize any of our product candidates. Foreign regulatory approval processes generally include all of the risks associated with the FDA approval procedures described above.

If we are unable either to create sales, marketing and distribution capabilities or enter into agreements with third parties to perform these functions, we will be unable to commercialize our product candidates successfully.

We currently have no marketing, sales, or distribution capabilities. If, and when we become reasonably certain that we will be able to commercialize our product candidates, we anticipate allocating resources to the marketing, sales and distribution of our proposed products in North America and in certain other geographies; however, we cannot assure that we will be able to market, sell, and distribute our products successfully. Our future success also may depend, in part, on our ability to enter into and maintain collaborative relationships for such capabilities and to encourage the collaborator’s strategic interest in the product candidates under development, and such collaborator’s ability

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to successfully market and sell any such products. Although we intend to pursue certain collaborative arrangements regarding the sale and marketing of certain of our product candidates, there are no assurances that we will be able to establish or maintain collaborative arrangements or, if we are able to do so, whether we would be able to conduct our own sales efforts. There can also be no assurance that we will be able to establish or maintain relationships with third-party collaborators or develop in-house sales and distribution capabilities. To the extent that we depend on third parties for marketing and distribution, any revenues we receive will depend upon the efforts of such third parties, and there can be no assurance that such efforts will be successful. In addition, there can also be no assurance that we will be able to market and sell our product candidates in the United States or overseas.

If we are not able to partner with a third party and are not successful in recruiting sales and marketing personnel or in building a sales and marketing infrastructure, we will have difficulty commercializing our product candidates, which would harm our business. If we rely on pharmaceutical or biotechnology companies with established distribution systems to market our products, we will need to establish and maintain partnership arrangements, and we may not be able to enter into these arrangements on acceptable terms or at all. To the extent that we enter into co-promotion or other arrangements, any revenues we receive will depend upon the efforts of third parties that may not be successful and that will be only partially in our control.

If physicians and patients do not accept and use our product candidates, once approved, our ability to generate revenue from sales of our products will be materially impaired.

Even if the FDA and/or foreign equivalents thereof approve our product candidates, physicians and patients may not accept and use them. The use of engineered T cells as potential cancer treatments is a relatively recent development and may not become broadly accepted by physicians, patients, hospitals, cancer treatment centers, third-party payors and others in the medical community. Acceptance and use of our products will depend upon a number of factors, including:

•The clinical indications for which our product candidates are approved;

•Perceptions by members of the healthcare community, including physicians, about the safety and effectiveness of our products;

•The prevalence and severity of any side effects;

•Pharmacological benefit and cost-effectiveness of our products relative to competing products;

•Relative convenience and ease of administration, including as compared to alternative treatments and competitive therapies;

•Availability of coverage and adequate reimbursement for our products from government or other third-party payors;

•Effectiveness of marketing and distribution efforts by us and our licensees and distributors, if any; and

•The price at which we sell our products.

Even if our products achieve market acceptance, we may not be able to maintain that market acceptance over time if new products or technologies are introduced that are more favorably received than our products, are more cost effective or render our products obsolete.

Our ability to generate product revenues will be diminished if our products do not obtain coverage and adequate reimbursement from payors.

Our ability to commercialize our product candidates, if approved, alone or with collaborators, will depend in part on the extent to which coverage and reimbursement will be available from third-party payors, including government and health administration authorities, private health maintenance organizations and health insurers and other payors. Patients who are prescribed medicine for the treatment of their conditions generally rely on third-party payors to reimburse all or part of the costs associated with their prescription drugs. Sufficient coverage and adequate reimbursement from third-party payors are critical to new product acceptance. Coverage decisions may depend upon clinical and economic standards that disfavor new drug products when more established or lower cost therapeutic alternatives are already available or subsequently become available. It is difficult to predict the coverage and reimbursement decisions that will be made by third-party payors for novel gene and cell therapy products such as ours. Even if we obtain coverage for our product candidates, the resulting reimbursement payment rates might not be adequate or may require co-payments that patients find unacceptably high. Patients are unlikely to use our product candidates unless coverage is provided, and reimbursement is adequate to cover a significant portion of the cost of our product candidates.

In addition, the market for our product candidates for which we may receive regulatory approval will depend significantly on access to third-party payors’ drug formularies or lists of medications for which third-party payors provide coverage and reimbursement, which might not include all of the FDA-approved drugs for a particular indication. The industry competition to be included in such formularies often leads to downward pricing pressures on pharmaceutical companies. Also, third-party payors may refuse to include a particular branded drug in their formularies or otherwise restrict patient access to a branded drug when a less costly generic equivalent or other alternative is available.

Third-party payors, whether foreign or domestic, or governmental or commercial, are developing increasingly sophisticated methods of controlling healthcare costs. In addition, in the United States, no uniform policy of coverage and reimbursement for drug products exists among third-party payors. Therefore, coverage and reimbursement for drug products can differ significantly from payor to payor. As a result, the

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coverage determination process is often a time-consuming and costly process that would require us to provide scientific and clinical support for the use of our products to each payor separately, with no assurance that approval will be obtained. If we are unable to obtain coverage of and adequate payment levels for our product candidates, if approved, from third-party payors, physicians may limit how much or under what circumstances they will prescribe or administer our products and patients may decline to purchase them. This in turn could affect our ability to successfully commercialize our products and materially and adversely impact our business, financial condition, results of operations, cash flows and prospects.

In addition, in many foreign countries, particularly the countries of the European Union, or EU, the pricing of prescription drugs is subject to government control. In some non-U.S. jurisdictions, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements governing drug pricing vary widely from country to country. For example, the EU provides options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. A member state may approve a specific price for the medicinal product or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the medicinal product on the market. We may face competition for our product candidates from lower-priced products in foreign countries that have placed price controls on pharmaceutical products. In addition, there may be importation of foreign products that compete with our own products, which could negatively impact our profitability.

The market opportunities for our product candidates may be limited to those patients who are ineligible for or have failed prior treatments and may be small.

Cancer therapies are sometimes characterized as first line, second line or third line, and the FDA often approves new therapies initially only for third line use. When cancer is detected early enough, first line therapy is sometimes adequate to cure the cancer or prolong life without a cure. Whenever first line therapy, usually chemotherapy, hormone therapy, surgery, or a combination of these, proves unsuccessful, second line therapy may be administered. Second line therapies often consist of more chemotherapy, radiation, antibody drugs, tumor targeted small molecules, or a combination of these. Third line therapies can include bone marrow transplantation, antibody and small molecule targeted therapies, more invasive forms of surgery and new technologies. We expect to initially seek approval of our product candidates as a third line therapy for patients who have failed other approved treatments.

Subsequently, for those product candidates that prove to be sufficiently beneficial, if any, we would expect to seek approval as a second line therapy and potentially as a first line therapy, but there is no guarantee that our product candidates, even if approved, would be approved for second line or first line therapy. In addition, we may have to conduct additional clinical trials prior to gaining approval for second line or first line therapy.

Our projections of both the number of people who have the cancers we targeted, as well as the subset of people with these cancers in a position to receive therapy and who have the potential to benefit from treatment with our product candidates, are based on our beliefs and estimates. These estimates have been derived from a variety of sources, including scientific literature, surveys of clinics, patient foundations or market research and may prove to be incorrect. Further, new studies may change the estimated incidence or prevalence of these cancers. The number of patients may turn out to be lower than expected. Additionally, the potentially addressable patient population for our product candidates may be limited or may not be amenable to treatment with our product candidates. Our market opportunities may also be limited by competitor treatments that may enter the market.

Healthcare legislative reform measures may have a material adverse effect on our business, financial condition, results of operations, cash flows and prospects.

In both the United States and certain foreign jurisdictions, there have been a number of legislative and regulatory enactments in recent years that change the healthcare system in ways that could impact our future ability to sell our product candidates profitably.

Furthermore, there have been and continue to be a number of initiatives at the federal and state level that seek to reduce healthcare costs. Most significantly, in March 2010, President Obama signed into law the ACA, which included measures that have significantly changed the way healthcare is financed by both governmental and private insurers. The ACA, among other things, imposed a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected, increased the minimum Medicaid rebates owed by manufacturers under the Medicaid Drug Rebate Program, extended the rebate program to individuals enrolled in Medicaid managed care organizations, added a provision to increase the Medicaid rebate for line extensions or reformulated drugs, established annual fees on manufacturers and importers of certain branded prescription drugs and biologic agents, promoted a new Medicare Part D coverage gap discount program, expanded the entities eligible for discounts under the Public Health Service Act pharmaceutical pricing program and imposed a number of substantial new compliance provisions related to pharmaceutical companies’ interactions with healthcare practitioners. The ACA also expanded eligibility for Medicaid programs and introduced a new Patient Centered Outcomes Research Institute to oversee, identify priorities in and conduct comparative clinical effectiveness research, along with funding for such research and a new Center for Medicare & Medicaid Innovation at CMS, to test innovative payment and service delivery models to lower Medicare and Medicaid spending.

There have been executive, legal and political challenges to certain aspects of the ACA. For example, President Trump signed several executive orders and other directives designed to delay, circumvent or loosen certain requirements mandated by the ACA. Concurrently,

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Congress considered legislation to repeal or repeal and replace all or part of the ACA. While Congress has not passed comprehensive repeal legislation, several bills affecting the implementation of certain taxes under the ACA have been signed into law. In December 2017, Congress repealed the tax penalty, effective January 1, 2019, for an individual’s failure to maintain ACA-mandated health insurance as part of the Tax Act. Further, President Biden issued an executive order that instructed certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. Further, there have been a number of health reform initiatives by the Biden administration that have impacted the ACA. For example, on August 16, 2022, President Biden signed the IRA into law, which, among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in ACA marketplaces through plan year 2025. The IRA also eliminates the "donut hole" under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and implementing a newly established manufacturer discount program. It is possible that the ACA will be subject to judicial or Congressional challenges in the future. It is unclear how any such challenges and the healthcare reform measures of the Biden administration will impact ACA and our business. The ultimate content, timing or effect of any healthcare reform measures on the U.S. healthcare industry is unclear.

Further, there has been increasing legislative and enforcement interest in the United States with respect to specialty drug pricing practices. As a result, there have been several U.S. Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs and reform government program reimbursement methodologies for drugs. At the federal level, the Trump administration used several means to propose or implement drug pricing reform, including through federal budget proposals, executive orders and policy initiatives. For example, on July 24, 2020 and September 13, 2020, the Trump administration announced several executive orders related to prescription drug pricing that attempt to implement several of the administration’s proposals.

The FDA also released a final rule, effective November 30, 2020, implementing a portion of the importation executive order providing guidance for states to build and submit importation plans for drugs from Canada. Further, on November 30, 2020, HHS finalized a regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Medicare Part D, either directly or through pharmacy benefit managers, unless the price reduction is required by law. The IRA delayed the implementation of the rule to January 1, 2032. The rule also creates a new safe harbor for price reductions reflected at the point-of-sale, as well as a new safe harbor for certain fixed fee arrangements between pharmacy benefit managers and manufacturers, the implementation of which have also been delayed until January 1, 2032. In addition, on March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate price cap, currently set at 100% of a drug's average manufacturer price for single source and innovator multiple source products, beginning on January 1, 2024. Further, in July 2021, the Biden Administration released an executive order that included multiple provisions aimed at prescription drugs. In response to President Biden's executive order, on September 9, 2021, HHS released a Comprehensive Plan for Addressing High Drug Prices that outlines principles for drug price reform. The plan sets out a variety of potential legislative policies that Congress could pursue as well as potential administrative actions by HHS. No legislative or administrative actions have been finalized to implement these principles. In addition, Congress is considering drug pricing as part of the budget reconciliation process. Additionally, the IRA, among other things, (i) directs HHS to negotiate the price of certain high-expenditure, single-source drugs and biologics covered under Medicare, and subject drug manufacturers to civil monetary penalties and a potential excise tax by offering a price that is not equal to or less than the negotiated “maximum fair price” under the law, and (ii) imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation. The IRA permits HHS to implement many of these provisions through guidance, as opposed to regulation, for the initial years. These provisions began to take effect progressively starting in fiscal year 2023, although they may be subject to legal challenges. It is currently unclear how the IRA will be effectuated but is likely to have a significant impact on the pharmaceutical industry. Individual states in the United States also have increasingly passed legislation and implemented regulations designed to control pharmaceutical product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing.

We expect that healthcare reform measures that may be adopted in the future may result in more rigorous coverage criteria and in additional downward pressure on the price that we may receive for any approved product. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability or, if we receive regulatory approval, commercialize our products.

If we fail to comply with federal and state healthcare laws, including fraud and abuse and health information privacy and security laws, we could face substantial penalties and our business, financial condition, results of operations, cash flows and prospects could be materially and adversely affected.

As a pharmaceutical company, even though we do not and will not control referrals of healthcare services or bill directly to Medicare, Medicaid or other third-party payors, certain federal and state healthcare laws and regulations pertaining to fraud and abuse and patients’ rights are and will be applicable to our business. For example, we could be subject to healthcare fraud and abuse and patient privacy regulation by both the federal government and the states in which we conduct our business. The laws that may affect our ability to operate include, among others:

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•The federal Anti-Kickback Statute, which regulates our business activities, including our clinical research and relationships with healthcare providers or other entities as well as our future marketing practices, educational programs and pricing policies, and by prohibiting, among other things, soliciting, receiving, offering or paying remuneration, directly or indirectly, to induce, or in return for, either the referral of an individual or the purchase or recommendation of an item or service reimbursable under a federal healthcare program, such as the Medicare and Medicaid programs;

•Federal civil and criminal false claims laws, including the False Claims Act, which permits a private individual acting as a “whistleblower” to bring actions on behalf of the federal government alleging violations of the False Claims Act, and civil monetary penalty laws, which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid or other third-party payors that are false or fraudulent;

•HIPAA, which created new federal civil and criminal statutes that prohibit, among other things, executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters;

•HITECH, and its implementing regulations, which impose certain requirements relating to the privacy, security and transmission of individually identifiable health information on entities and individuals subject to the law including certain healthcare providers, health plans, and healthcare clearinghouses, known as covered entities, as well as individuals and entities that perform services for them which involve the use, or disclosure of, individually identifiable health information, known as business associates and their subcontractors that use, disclose or otherwise process individually identifiable health information;

•Requirements under the Physician Payments Sunshine Act to report annually to CMS certain financial arrangements with prescribers and teaching hospitals, as defined in the ACA and its implementing regulations, including reporting any “transfer of value” made or distributed to teaching hospitals, and physicians, as defined by such law and reporting any ownership and investment interests held by physicians and their immediate family members during the preceding calendar year; and

•State and foreign law equivalents of each of the above federal laws, such as anti-kickback and false claims laws which may apply to items or services reimbursed by any third-party payor, including commercial insurers; state laws that require pharmaceutical companies to comply with the industry’s voluntary compliance guidelines and the applicable compliance guidance promulgated by the federal government that otherwise restricts certain payments that may be made to healthcare providers and entities; state laws that require drug manufacturers to report information related to payments and other transfer of value to physicians and other healthcare providers and entities; state laws that require the reporting of information related to drug pricing; state and local laws that require the registration of pharmaceutical sales representatives; and state and foreign laws governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

Because of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available, it is possible that some of our business activities, including any consulting agreements with physicians who may receive stock or stock options as compensation for their services, could be subject to challenge under one or more of such laws. In addition, recent health care reform legislation has further strengthened these laws. For example, the ACA, among other things, amended the intent requirement of the federal Anti-Kickback Statute and certain criminal healthcare fraud statutes. A person or entity no longer needs to have actual knowledge of this statute or specific intent to violate it. Moreover, the ACA provides that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims Act.

To the extent that any of our product candidates is ultimately sold in a foreign country, we may be subject to similar foreign laws and regulations.

Efforts to ensure that our business arrangements comply with applicable healthcare laws involve substantial costs. It is possible that governmental and enforcement authorities will conclude that our business practices do not comply with current or future statutes, regulations or case law interpreting applicable fraud and abuse or other healthcare laws and regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, we may be subject to significant penalties, including administrative, civil and criminal penalties, damages, fines, exclusion from participation in United States federal or state health care programs, such as Medicare and Medicaid, disgorgement, imprisonment, integrity oversight and reporting obligations, and the curtailment or restructuring of our operations, any of which could materially adversely affect our ability to operate our business and our financial results. Although compliance programs can mitigate the risk of investigation and prosecution for violations of these laws, the risks cannot be entirely eliminated. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. Moreover, achieving and sustaining compliance with applicable federal and state privacy, security and fraud laws may prove costly.

Our immuno-oncology product candidates may face competition in the future from biosimilars and/or new technologies.

The Biologics Price Competition and Innovation Act of 2009, or BPCIA, provides an abbreviated pathway for the approval of follow-on biological products. Under the BPCIA, an application for a biosimilar product cannot be approved by the FDA until 12 years after the original branded product was approved under a BLA. However, there is a risk that the U.S. Congress could amend the BPCIA to significantly shorten

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this exclusivity period, potentially creating the opportunity for generic competition sooner than anticipated. Further, this data exclusivity does not prevent another company from developing a product that is highly similar to the original branded product, generating its own data and seeking approval. Data exclusivity only assures that another company cannot rely upon the data within the innovator’s application to support the biosimilar product’s approval.

RISKS RELATED TO OUR INTELLECTUAL PROPERTY

If we or our licensors fail to adequately protect or enforce our intellectual property rights or secure rights to patents of others, the value of our intellectual property rights would diminish and our ability to successfully develop our product candidates may be materially impaired.

Our success, competitive position and future revenues will depend in part on our ability and the abilities of our licensors to obtain and maintain patent protection for our products, methods, processes and other technologies, to preserve confidential information, including trade secrets, to prevent third parties from infringing our proprietary rights, and to operate without infringing the proprietary rights of third parties. Our ability to consummate certain strategic transactions, including strategic partnerships or out-licensing opportunities, among others, may also be impaired if we are unable to adequately protect our intellectual property or if we infringe on the proprietary rights of others.

To date, we have exclusive rights in the field of cancer treatment to certain U.S. and foreign intellectual property with respect to certain cell therapy and related technologies from MD Anderson as well as with respect to the Precigen technology, including Sleeping Beauty. Under the MD Anderson License, future patent applications require the agreement of each of MD Anderson, Precigen and us, and MD Anderson has the right to control the preparation, filing, and prosecution of such patent applications unless the parties agree that we or Precigen instead may control such activities. Although under the License Agreement MD Anderson has agreed to review and incorporate any reasonable comments that we or Precigen may have regarding licensed patents and patent applications, we cannot guarantee that our comments will be solicited or implemented. Under the Patent License with the NCI for certain TCRs, the NCI is responsible for the preparation, filing, prosecution, and maintenance of patent applications and patents licensed to us. Although under the Patent License, the NCI is required to consult with us in the preparation, filing, prosecution, and maintenance of all its patent applications and patents licensed to us, we cannot guarantee that our comments will be solicited or implemented. On October 27, 2023, we provided the NCI the requisite notice of our intent to terminate the Patent License, effective 60 days from such notice. We no longer have any rights to the technology licensed pursuant to the Patent License upon the effectiveness of the termination notice. Under our A&R License Agreement Precigen has the right, but not the obligation, to prepare, file, prosecute, and maintain the patents and patent applications licensed to us and shall bear all related costs incurred by it in regard to those actions. Precigen is required to consult with us and keep us reasonably informed of the status of the patents and patent applications licensed to us, and to confer with us prior to submitting any related filings and correspondence. Although under the A&R License Agreement Precigen has agreed to consider in good faith and consult with us regarding any comments we may have regarding these patents and patent applications, we cannot guarantee that our comments will be solicited or followed. Without direct control of the in-licensed patents and patent applications, we are dependent on MD Anderson or Precigen, as applicable, to keep us advised of prosecution, particularly in foreign jurisdictions where prosecution information may not be publicly available. We anticipate that we and Precigen will file additional patent applications both in the United States and in other jurisdictions. However, we cannot predict or guarantee for either our in-licensed patent portfolios or for Alaunos’ patent portfolio:

•When, if at all, any patents will be granted on such applications;

•The scope of protection that any patents, if obtained, will afford us against competitors;

•That third parties will not find ways to invalidate and/or circumvent our patents, if obtained;

•That others will not obtain patents claiming subject matter related to or relevant to our product candidates; or

•That we will not need to initiate litigation and/or administrative proceedings that may be costly whether we win or lose.

The patent prosecution process is expensive and time-consuming, and we may not be able to file and prosecute all necessary or desirable patent applications at a reasonable cost, in a timely manner or at all. It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection. Moreover, in some circumstances, we do not have the right to control the preparation, filing and prosecution of patent applications, or to maintain the patents, covering technology that we license from third parties. We may also require the cooperation of our licensors in order to enforce the licensed patent rights, and such cooperation may not be provided. Therefore, these patents and applications may not be prosecuted and enforced in a manner consistent with the best interests of our business.

The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal and factual questions and has in recent years been the subject of much litigation. In addition, the laws of other jurisdictions may not protect our rights to the same extent as the laws of the United States. For example, methods of therapeutic treatment, which are patent-eligible in the United States, may not be claimed in many other jurisdictions; some patent offices (such as the European Patent Office) may permit the redrafting of method of treatment claims into a "medical use" format that is patent-eligible, while other patent offices (such as the Indian Patent Office) may not accept any redrafted claiming format for such claims.

Changes in patent laws or in interpretations of patent laws in the United States and other jurisdictions may diminish the value of our intellectual property or narrow the scope of our patent protection. In September 2011, the Leahy-Smith America Invents Act, or the Leahy-Smith Act, was

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signed into law, resulting in a number of significant changes to United States patent law. These changes include provisions that affect the way patent applications are prosecuted and may also affect patent litigation. In addition, the United States Supreme Court has ruled on several patent cases in recent years, narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. This combination of events has created uncertainty with respect to the value of patents, once obtained, and with regard to our ability to obtain patents in the future. As the USPTO continues to implement the Leahy-Smith Act, and as the federal courts have the opportunity to interpret the Leahy-Smith Act, the laws and regulations governing patents, and the rules regarding patent procurement could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

Certain technologies utilized in our research and development programs are already in the public domain. Moreover, a number of our competitors have developed technologies, or filed patent applications or obtained patents on technologies, compositions and methods of use that are relevant to our business and may cover or conflict with our owned or licensed patent applications, technologies or product candidates. Such conflicts could limit the scope of the patents, if any, that we may be able to obtain. Because patent applications in the United States and many foreign jurisdictions are typically not published until 18 months after filing, or in some cases at all, and because publications of discoveries in the scientific literature lag behind actual discoveries per se, neither we nor our licensors can be certain that others have not filed patent applications for technology used by us or covered by our pending patent applications. We cannot know with certainty whether we were the first to make and file for the inventions claimed in our owned patent portfolio, or whether our licensors were the first to make and file for the inventions claimed in our in-licensed patent portfolio. As a result, the issuance, scope, validity, enforceability and commercial value of our patent rights are highly uncertain. Our pending and future patent applications may not result in the issuance of patents that protect our technology or products, in whole or in part, or that effectively prevent others from commercializing competitive technologies and products. In addition, our own earlier filed patents and applications or those of MD Anderson or Precigen, to the extent not then terminated, may limit the scope of later patents we obtain, if any. If third parties file or have filed patent applications or obtained patents on technologies, compositions and methods of use that are relevant to our business and that cover or conflict with our owned or licensed patent applications, technologies or product candidates, we may be required to challenge such protection, terminate or modify our programs impacted by such protection, or obtain licenses from such third parties, which might not be available on acceptable terms, or at all.

Even if our owned and licensed patent applications were to be issued as patents, they may not issue in a form that would provide us with any meaningful protection, prevent competitors from competing with us or otherwise provide us with any competitive advantage. Our competitors may be able to circumvent our owned or licensed patents by developing similar or alternative technologies or products in a non-infringing manner.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our owned and licensed patents may be challenged in the courts or patent offices in the United States and abroad. Such challenges may result in loss of exclusivity due to our patents being narrowed, invalidated or held unenforceable, which could limit our ability to stop others from using or commercializing similar or identical technology and products, or limit the duration of the patent protection of our technology and products. Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates might expire before or even after such candidates are commercialized. As a result, our owned and licensed patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours.

If we are unable to protect the confidentiality of our confidential information, our business and competitive position would be significantly harmed.

Our success also depends upon the skills, knowledge and experience of our scientific and technical personnel, our consultants and advisors, as well as our licensors and contractors. To help protect our proprietary know-how and our inventions for which patents may be unobtainable or difficult to obtain, and to maintain our competitive position, we rely on trade secret protection and confidentiality agreements. To this end, it is our general policy to require our employees, consultants, advisors and contractors to enter into agreements that prohibit the disclosure of confidential information and, where applicable, require disclosure and assignment to us of the ideas, developments, discoveries and inventions important to our business. These agreements may not provide adequate protection for our trade secrets, know-how, confidential information or other proprietary information in the event of any unauthorized use or disclosure or the lawful development by others of such information. Moreover, we may not be able to obtain adequate remedies for any breaches of these agreements. Our trade secrets or other confidential information may also be obtained by third parties by other means, such as breaches of our physical or computer security systems. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret or other confidential information is difficult, expensive and time-consuming, and the outcome is unpredictable. In addition, some courts inside and outside the United States are less willing or unwilling to protect trade secrets. If any of our trade secrets or other confidential information were to be lawfully obtained or independently developed by competitors, we would have no right to prevent them, or those to whom they communicate it, from using that technology or information to compete with us. If any of our trade secrets, know-how or other proprietary information is disclosed, the value of our trade secrets, know-how and other proprietary rights would be significantly impaired and our business and competitive position would suffer.

Third-party claims of intellectual property infringement would require us to spend significant time and money and could prevent us from developing or commercializing our products.

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In order to protect or enforce patent rights, we may initiate patent infringement litigation against third parties. Similarly, we may be sued by others for patent infringement. We also may become subject to pre- and post-grant proceedings conducted in the USPTO, including interferences, derivations, post-grant review, inter partes review, or reexamination. In other jurisdictions, our patent estate may be subject to pre- and post-grant opposition, nullity, revocation proceedings and the like. Asserting and defending against intellectual property actions are costly and divert technical and management personnel away from their normal responsibilities.

Should we resume development in the future, our commercial success depends upon our ability, and the ability of our collaborators, to develop, manufacture, market and sell our product candidates without infringing the proprietary rights of third parties. There is considerable intellectual property litigation in the biotechnology and pharmaceutical industries. While no such litigation has been brought against us and we have not been held by any court to have infringed a third party’s intellectual property rights, we cannot guarantee that our products or use of our products do not infringe or will not be asserted to infringe third-party patents. It is also possible that we have failed to identify relevant third-party patents or applications, or that as-yet unpublished third-party patent applications will later result in the grant of patents relevant to our business. Another possibility is for a third-party patent or patent application to first contain claims not relevant to our business but then to be reissued or amended in such a way that it does become relevant.

Our research, development and commercialization activities, as well as any product candidates or products resulting from these activities, may infringe or be asserted to infringe patents or patent applications under which we do not hold licenses or other rights. Owning a patent does not confer on the patentee the right to practice the claimed invention and does not protect the patentee from being sued for infringement of another owner’s patent. Our patent position cannot and does not provide any assurance that we are not infringing or will not be asserted to infringe the patent rights of another.

The patent landscape in the field of immuno-oncology is particularly complex. We are aware of numerous United States and foreign patents and pending patent applications of third parties directed to compositions, methods of use and methods of manufacture of immuno-oncology products. In addition, there may be patents and patent applications in the field of which we are not aware. The technology we currently license from MD Anderson and Precigen is early-stage technology, and we were in the process of designing and developing products using this technology. Although we sought and, should we resume development activities, will seek to avoid pursuing the development of products that may infringe any third-party patent claims that we believe to be valid and enforceable, we may fail to do so. Moreover, given the breadth and number of claims in patents and pending patent applications in the field of immuno-oncology and the complexities and uncertainties associated with them, third parties may allege that we are infringing patent claims even if we do not believe such claims have merit.

If a claim for patent infringement is asserted, there can be no assurance that the resolution of the claim would permit us to continue marketing the relevant product on commercially reasonable terms, if at all. We may not have sufficient resources to bring these actions to a successful conclusion. If we do not successfully defend any infringement actions to which we become a party or if we are unable to have any asserted third-party patents declared invalid or unenforceable, we may have to pay substantial monetary damages, which can be tripled if the infringement is deemed willful, and/or we may be required to discontinue or significantly delay commercialization and development of the affected products.

Any legal action against us or our collaborators claiming damages and seeking to enjoin developmental or marketing activities relating to affected products could, in addition to subjecting us to potential liability for damages, require us or our collaborators to obtain licenses to continue to develop, manufacture or market the affected products. Such licenses may not be available to us on commercially reasonable terms, or at all.

An adverse determination in a proceeding involving our owned or licensed intellectual property may allow entry in the market of substitutes, including biosimilar or generic substitutes, for our products.

Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.

Annuities and other similar fees must be paid to the respective patent authority to maintain patents (or patents and patent applications) in most jurisdictions worldwide. Further, patent authorities in jurisdictions worldwide require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. While an inadvertent lapse can in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Noncompliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, non-payment of fees and failure to submit documents with the necessary formal requirements, such as notarization and legalization. In such an event, our competitors might be able to enter the market, which would have a material adverse effect on our business.

We license rights to products and technology that are important to our business, and we expect to enter into additional licenses in the future. For instance, we have in-licensed patents and patent applications under the MD Anderson License and the License Agreement. Under these agreements, we are subject to a range of obligations pertaining to commercialization and development, sublicensing, royalty, patent prosecution and maintenance, and insurance.

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Any failure by us to obtain a needed license, comply with any of these obligations or any other breach by us of our license agreements could give the licensor the right to terminate the license in whole, terminate the exclusive nature of the license or bring a claim against us for damages. Any such termination or claim could have a material adverse effect on our business, financial condition, results of operations, cash flows and prospects. Even if we contest any such termination or claim and are ultimately successful, such dispute could lead to delays in the development or commercialization of potential products and result in time-consuming and expensive litigation or arbitration. On termination we may be required to license to the licensor any related intellectual property that we developed.

In addition, in certain cases, the rights licensed to us are rights of a third party licensed to our licensor. In such instances, if our licensors do not comply with their obligations under such licenses, our rights under our license agreements with our licensor may be adversely affected.

In addition, the licensing or acquisition of third-party intellectual property rights is a highly competitive area, and a number of more established companies are also pursuing strategies to license or acquire third-party intellectual property rights that we may consider attractive or necessary. These established companies may have a competitive advantage over us due to their size, capital resources and greater clinical development and commercialization capabilities. In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment or at all. If we are unable to successfully obtain rights to required third-party intellectual property rights or maintain the existing intellectual property rights we have, we may have to abandon development of the relevant program or product candidate, which could have a material adverse effect on our business, financial condition, results of operations, cash flows and prospects.

We may be subject to claims by third parties asserting that our employees or we have misappropriated their intellectual property or claiming ownership of what we regard as our own intellectual property.

Many of our employees were previously employed at universities or at other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Although we try to ensure that our employees do not use the proprietary information or know-how of others in their work for us, we may be subject to claims that these employees or we have used or disclosed intellectual property, including trade secrets or other proprietary information, of any such employee’s former employer. Litigation may be necessary to defend against these claims.

In addition, while it is our policy to require our employees and contractors who may be involved in the development of intellectual property to execute agreements assigning such intellectual property to us, we may be unsuccessful in executing such an agreement with each party who in fact develops intellectual property that we regard as our own. Our and their assignment agreements may not be self-executing or may be breached, and we may be forced to bring claims against third parties, or defend claims they may bring against us, to determine the ownership of what we regard as our intellectual property.

If we fail in prosecuting or defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel. Even if we are successful in prosecuting or defending against such claims, litigation could result in substantial costs and be a distraction to management.

OTHER RISKS RELATED TO OUR COMPANY

Our stock price has been, and may continue to be, volatile.

The market price for our common stock is volatile and may fluctuate significantly in response to a number of factors, most of which we cannot control, including:

•Our decision to pursue a strategic reprioritization;

•Price and volume fluctuations in the overall stock market;

•Changes in operating results and performance and stock market valuations of other biopharmaceutical companies generally, or those that develop and commercialize cancer drugs in particular;

•Market conditions or trends in our industry or the economy as a whole;

•Preclinical studies or clinical trial results, should we resume clinical development;

•The commencement, enrollment or results of clinical trials of our product candidates or any future clinical trials we may conduct, or changes in the development status of our product candidates;

•Public statements by third parties like trial participants and clinical investigators regarding clinical trials;

•Public concern as to the safety of drugs developed by us or others;

•The financial or operational projections we may provide to the public, any changes in these projections or our failure to meet these projections;

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•Comments by securities analysts or changes in financial estimates or ratings by any securities analysts who follow our common stock, our failure to meet these estimates or failure of those analysts to initiate or maintain coverage of our common stock;

•The public’s response to press releases or other public announcements by us or third parties, including our filings with the SEC, as well as announcements of the status of development of our products, announcements of technological innovations or new therapeutic products by us or our competitors, announcements regarding collaborative agreements and other announcements relating to product development, litigation and intellectual property impacting us or our business;

•Government regulation;

•FDA determinations on the approval of a product candidate BLA submission;

•The sustainability of an active trading market for our common stock;

•Future sales of our common stock by us, our executive officers, directors and significant stockholders;

•Announcements of mergers or acquisition transactions;

•Our inclusion or removal from certain stock indices;

•Our delisting from Nasdaq;

•Developments in patent or other proprietary rights;

•Changes in reimbursement policies;

•Announcements of medical innovations or new products by our competitors;

•Announcements of changes in our senior management or directors;

•General economic, industry, political and market conditions, including, but not limited to, the ongoing impact of global economic conditions;

•Other events or factors, including those resulting from war, incidents of terrorism, natural disasters, pandemics or responses to these events; and

•Changes in accounting principles.

In addition, the stock market in general and our stock in particular from time to time experiences significant price and volume fluctuations unrelated to the operating performance of particular companies, which has resulted in decreased stock prices for many companies notwithstanding the lack of a fundamental change in their underlying business models or prospects. Public debt and equity markets, and in particular the Nasdaq Capital Market, have experienced extreme price and volume fluctuations that have affected and continue to affect the market prices of equity securities of many biopharmaceutical companies.

Stock prices of many biopharmaceutical companies have fluctuated in a manner unrelated or disproportionate to the operating performance of those companies. In the past, stockholders have instituted securities class action litigation following periods of market volatility. If we were involved in securities litigation, we could incur substantial costs and our resources, and the attention of management could be diverted from our business.

Public statements made by third parties such as trial participants and clinical investigators about clinical trials without our consent may adversely impact our stock price. We may not be aware of these third-party statements when made, may not be able to respond to these third-party statements and may not be able to defend our business or the public’s legitimate interests due to restrictions on what we may say about our product candidates, which may cause the price of our stock to fluctuate. If any of these events were to occur or we otherwise fail to comply with applicable regulations, we could incur liability, face regulatory actions or incur other significant harm to our business.

Anti-takeover provisions in our charter documents and under Delaware law may make an acquisition of us, which may be beneficial to our stockholders, more difficult.

Provisions of our amended and restated certificate of incorporation and bylaws, as well as provisions of Delaware law, could make it more difficult for a third party to acquire us, even if doing so would benefit our stockholders. These provisions authorize the issuance of “blank check” preferred stock that could be issued by our Board of Directors to increase the number of outstanding shares and hinder a takeover attempt, and limit who may call a special meeting of stockholders. In addition, Section 203 of the Delaware General Corporation Law, or Section 203, generally prohibits a publicly held Delaware corporation from engaging in a business combination with a party that owns at least 15% of its common stock unless the business combination is approved by our Board of Directors before the person acquires the 15% ownership stake or later by its Board of Directors and two-thirds of its stockholders. Section 203 could have the effect of delaying, deferring or preventing a change in control that our stockholders might consider to be in their best interests.

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We have begun exploring strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. If we are approached by a third-party in connection with such process, and our Board of Directors does not believe that a transaction with such party is in the best interest of our stockholders, we may rely on the provisions described above to prevent an acquisition by such party in order to maximize stockholder value. There is no guarantee that we will be able to find a transaction that delivers superior value to our stockholders.

Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware will be the exclusive forum for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our amended and restated bylaws provide that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware is the exclusive forum for (i) any derivative action or proceeding brought on our behalf; (ii) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers or other employees to us or our stockholders; (iii) any action asserting a claim against us or any of our directors, officers or other employees arising pursuant to any provision of the Delaware General Corporation Law, our amended and restated certificate of incorporation or our amended and restated bylaws; (iv) any claim or cause of action seeking to interpret, apply, enforce or determine the validity of the amended and restated certificate of incorporation or our bylaws; (v) any claim or cause of action as to which the Delaware General Corporation Law confers jurisdiction on the Court of Chancery of the State of Delaware; or (vi) any action asserting a claim against us or any of our directors, officers or other employees governed by the internal affairs doctrine.

These provisions would not apply to suits brought to enforce a duty or liability created by the Exchange Act. Furthermore, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all Securities Act actions. Accordingly, both state and federal courts have jurisdiction to entertain such claims.

These exclusive forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage lawsuits against us and our directors, officers and other employees. If a court were to find either exclusive-forum provision to be inapplicable or unenforceable in an action, we may incur further significant additional costs associated with resolving the dispute in other jurisdictions, all of which could seriously harm our business.

Because we do not expect to pay dividends, you will not realize any income from an investment in our common stock unless and until you sell your shares at a profit.

We have never paid dividends on our common stock, and we do not anticipate that we will pay any dividends for the foreseeable future. Accordingly, any return on an investment in us will be realized, if at all, only when you sell shares of our common stock.

Our ability to use net operating loss carryforwards and research tax credits to reduce future tax payments may be limited or restricted.

We have generated significant net operating loss carryforwards, or NOLs, and research and development tax credits, or R&D credits, as a result of our incurrence of losses and our conduct of research activities since inception. We generally are able to carry NOLs and R&D credits forward to reduce our tax liability in future years. However, our ability to utilize the NOLs and R&D credits is subject to the rules of Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, or the Code, respectively. Those sections generally restrict the use of NOLs and R&D credits after an “ownership change.” An ownership change occurs if, among other things, the stockholders (or specified groups of stockholders) who own or have owned, directly or indirectly, 5% or more of a corporation’s common stock or are otherwise treated as 5% stockholders under Section 382 of the Code and the U.S. Treasury Department regulations promulgated thereunder increase their aggregate percentage ownership of that corporation’s stock by more than 50 percentage points over the lowest percentage of the stock owned by these stockholders over the applicable testing period. In the event of an ownership change, Section 382 of the Code imposes an annual limitation on the amount of taxable income a corporation may offset with NOL carry forwards and Section 383 of the Code imposes an annual limitation on the amount of tax a corporation may offset with business credit (including R&D credits) carryforwards.

We may have experienced an “ownership change” within the meaning of Section 382 of the Code in the past and there can be no assurance that we will not experience additional ownership changes in the future. As a result, our NOLs and business credits (including R&D credits) may be subject to limitations, and we may be required to pay taxes earlier and in larger amounts than would be the case if our NOLs or R&D credits were freely usable.

If securities and/or industry analysts fail to continue publishing research about our business, if they change their recommendations adversely or if our business, financial condition, results of operations, cash flows or prospects do not meet their expectations, our stock price and trading volume could significantly decline.

The trading market for our common stock will be influenced by the research and reports that industry or securities analysts publish about us or our business. If one or more of these analysts cease coverage of our Company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline. In addition, it is likely that in some future period our operating results will be below the expectations of securities analysts or investors. If one or more of the analysts who cover us downgrade our stock, or if our business, financial condition, results of operations, cash flows or prospects do not meet their expectations, our

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stock price could significantly decline. If our common stock is delisted by Nasdaq, the impact of analysts ceasing to cover our securities may negatively impact the price of our common stock more dramatically.

Our business could be materially and negatively affected as a result of the actions of activist stockholders.

In 2021, we were engaged in a consent solicitation led by WaterMill Asset Management Corp., or WaterMill, where three new directors were added to our Board of Directors. We could experience other stockholder activism in the future, including another consent solicitation or a proxy contest. Activist stockholders may advocate for certain governance and strategic changes at our company. In the event of stockholder activism, particularly with respect to matters which our Board of Directors, in exercising their fiduciary duties, disagree with or have determined not to pursue, our business could be adversely affected because responding to actions by activist stockholders can be costly and time-consuming, disrupting our operations and diverting the attention of management, and perceived uncertainties as to our future direction may result in the loss of potential business opportunities and may make it more difficult to attract and retain qualified personnel, business partners, and customers.

In addition, if faced with a consent solicitation or proxy contest, we may not be able to respond successfully to the contest or dispute, which would be disruptive to our business. If individuals are elected to our Board of Directors with a differing agenda, our ability to effectively and timely implement our strategic plan and create additional value for our stockholders may be adversely affected.

If our Board of Directors elects to pursue a strategic alternative requiring a stockholder vote, activists may pursue a campaign against the transaction and as a result may make consummating the transaction more difficult, or impossible, despite the Board of Directors' conclusions that such transaction is in the best interest of our stockholders.

The exercise of outstanding warrants, and issuance of equity awards may have a dilutive effect on our stock, and materially and negatively impact the price of our common stock.

As of December 31, 2023, we had warrants for 1,452,394 shares of our common stock outstanding at a weighted average exercise price of $86.33 per share. We are able to grant stock options, restricted stock, restricted stock units, stock appreciation rights, bonus stocks, and performance awards under our 2020 Equity Incentive Plan. As of December 31, 2023, under the 2020 Equity Incentive Plan and the 2012 Equity Incentive Plan, 465,895 shares were issuable upon the exercise of outstanding options at a weighted average exercise price of $25.31 per share.

Our principal stockholders, executive officers and directors have substantial control over the Company, which may prevent you and other stockholders from influencing significant corporate decisions and may significantly harm the market price of our common stock.

As of December 31, 2023, our executive officers, directors and holders of five percent or more of our outstanding common stock beneficially owned, in the aggregate, 14.0% of our outstanding common stock. These stockholders may have interests that conflict with our other stockholders and, if acting together, have the ability to influence the outcome of matters submitted to our stockholders for approval, including the election and removal of directors and any merger, consolidation or sale of all or substantially all of our assets. Accordingly, this concentration of ownership may harm the market price of our common stock by:

•Delaying, deferring or preventing a change in control;

•Impeding a merger, consolidation, takeover or other business combination involving us; or

•Discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control of us.

In addition, this significant concentration of stock ownership may adversely affect the trading price of our common stock should investors perceive disadvantages in owning shares of common stock in a company that has such concentrated ownership.

We are a “smaller reporting company,” and the reduced disclosure requirements applicable to smaller reporting companies may make our common stock less attractive to investors.

We are considered a “smaller reporting company” under Rule 12b-2 of the Exchange Act. We are therefore entitled to rely on certain reduced disclosure requirements, such as an exemption from providing selected financial data and executive compensation information. These exemptions and reduced disclosures in our SEC filings due to our status as a smaller reporting company also mean our auditors are not required to review our internal control over financial reporting and may make it harder for investors to analyze our business, financial condition, results of operations, cash flows and prospects. We cannot predict if investors will find our common stock less attractive because we may rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our common stock prices may be more volatile. We will remain a smaller reporting company until our public float exceeds $250 million as of the last business day of our most recently completed second quarter if our annual revenues are $100 million or more as of our most recently completed fiscal year, or until our public float exceeds $700 million as of the last business day of our most recently completed second quarter if our annual revenues are less than $100 million as of our most recently completed fiscal year.

Item 1B. Unresolved Staff Comments

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None.

Item 1C. Cybersecurity

Cybersecurity Program

We have implemented a cybersecurity program to support both the effectiveness of our systems and our preparedness for information security risks. This program includes a number of safeguards, such as: password protection; multi-factor authentication; monitoring and alerting systems for internal and external threats; and regular evaluations of our cybersecurity program.

We use a risk-based approach with respect to our use and oversight of third-party service providers, tailoring processes according to the nature and sensitivity of the data accessed, processed, or stored by such third-party service provider. We also seek to include appropriate security terms in our contracts, where applicable as part of our oversight of third-party providers.

Process for Assessing, Identifying and Managing Material Risks from Cybersecurity Threats

We maintain an incident response program. In the event of a cybersecurity incident, designated personnel are responsible for assessing the severity of an incident and associated threat, containing the threat, remediating the threat, including recovery of data and access to systems, analyzing any reporting obligations associated with the incident, and performing post-incident analysis and program enhancements. We maintain an Incident Response Plan, which includes an Incident Response Process in the event of a significant cybersecurity incident. In the event of a significant cybersecurity incident, our head of administration will chair an incident response team to handle the incident. Such incident response team will include members of IT, finance (if applicable), legal, communications, human resources and any affected unit or department. IT, along with a designated forensic team, will use the Incident Response Process to guide the response.

Governance

Management Oversight

The controls and processes employed to assess, identify and manage material risks from cybersecurity threats are implemented and overseen by head of administration and our managed service provider. Our head of administration has over four years of experience addressing cybersecurity risks. Our head of administration is responsible for the day-to-day management of the cybersecurity program, including the prevention, detection, investigation, response to, and recovery from cybersecurity threats and incidents, and is regularly engaged to help ensure the cybersecurity program functions effectively in the face of evolving cybersecurity threats. Our head of administration oversees the Incident Response Plan and briefs our board of directors on cybersecurity matters, including the nature and design of our cybersecurity program, and threats, events, and program enhancements.

Board Oversight

In its oversight role, our Board of Directors is expected to specifically consider risks, including with respect to privacy, information technology and cybersecurity and threats to technology infrastructure.

On a regular basis, the head of administration reports to our Board of Directors on cybersecurity matters, including key risks, the potential impact of those exposures on our business, financial condition, results of operations, cash flows and prospects, and the programs and steps implemented by our management team to monitor and mitigate risks.

Cybersecurity Risks

Our cybersecurity risk management processes are integrated into our overall approach to risk management. Given our nature and size, we do not have a dedicated enterprise risk function, but our management team regularly considers and evaluates risks. As part of that risk management process, our management team identifies, assesses and evaluates risks impacting our operations, including those risks related to cybersecurity, and raise them for internal discussion, and where it is determined to be appropriate, issues are also raised to our Board of Directors for consideration.

As of the date of this Annual Report on Form 10-K, we are not aware of any previous cybersecurity incidents that have materially affected our business, financial condition, results of operations, cash flows and prospects or that are reasonably likely to have such a material effect. While we have implemented a cybersecurity program, the techniques used to infiltrate information technology systems continue to evolve. Accordingly, we may not be able to timely detect threats or anticipate and implement adequate security measures. For additional information regarding risks relating to privacy and cybersecurity, see "Item IA—Risk Factors—Risks Related to Our Business."

Item 2. Properties

Our corporate office is located at 2617 Bissonnet Street, Suite 225, Houston, Texas 77005. We believe that our existing facilities are adequate to meet our current needs.

Item 3. Legal Proceedings

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In the ordinary course of business, we may periodically become subject to legal proceedings and claims arising in connection with ongoing business activities. The results of litigation and claims cannot be predicted with certainty, and unfavorable resolutions are possible and could materially affect our business, financial condition, results of operations, cash flows and prospects. In addition, regardless of the outcome, litigation could have a material and adverse impact on us because of defense costs, diversion of management resources and other factors.

We do not have any pending litigation that, separately or in the aggregate, would, in the opinion of management, be reasonably likely to have a material adverse effect on our business, financial condition, results of operations, cash flows or prospects.

KBI Biopharma Litigation

On March 17, 2023, KBI Biopharma, Inc., or KBI, filed a complaint against us in the District Court of Harris County, Texas, 165th Judicial District, asserting breach of an Amended and Restated Master Services Agreement between us and KBI relating to the development of an autologous gene modified T-cell therapy product, or the KBI Agreement. KBI was primarily seeking unspecified monetary damages in excess of $3.2 million. On May 1, 2023, we filed an answer generally denying all of KBI’s allegations and asserting affirmative and other defenses as well as counterclaims for breach of the KBI Agreement and conversion. On October 20, 2023, we entered into an agreement with KBI to settle all claims asserted by KBI against us and our counterclaims against KBI at issue in the litigation for $1.0 million. All claims have been dismissed in their entirety with prejudice.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholders Matters and Issuer Purchases of Equity Securities

Market for Common Stock

Our common stock trades on the Nasdaq Capital Market under the symbol “TCRT.”

Record Holders

As of March 18, 2024, we had approximately 167 holders of record of our common stock, one of which was Cede & Co., a nominee for Depository Trust Company, or DTC. Shares of common stock that are held by financial institutions as nominees for beneficial owners or in “street name” are deposited into participant accounts at DTC and are considered to be held of record by Cede & Co. as one stockholder.

Dividends

We have never declared or paid a cash dividend on our common stock and do not anticipate paying any cash dividends in the foreseeable future.

Unregistered Sales of Securities

We did not sell or issue any equity securities during the three months ended December 31, 2023 that were not registered under the Securities Act.

Repurchases

There were no repurchases of our common stock by the Company during the fiscal quarter ended December 31, 2023.

Item 6. [Reserved]

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

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our financial statements and related notes appearing elsewhere in this Annual Report on Form 10-K. In addition to historical financial information, the following discussion contains forward-looking statements that reflect our plans, estimates and beliefs. Our actual results, levels of activity, performance or achievements could differ materially from those contained in or implied by any forward-looking statements. Factors that could cause or contribute to these differences include those under “Risk Factors” included in Part I, Item 1A and under “Special Note Regarding Forward-Looking Statements” or in other parts of this Annual Report on Form 10-K. All share amounts presented in this Item 7 give effect to the 1-for-15 reverse stock split of our outstanding shares of common stock that occurred on January 31, 2024.

Overview

We have operated as a clinical-stage oncology-focused cell therapy company developing adoptive TCR-T cell therapy, designed to treat multiple solid tumor types in large cancer patient populations with unmet clinical needs. We were working to leverage our cancer hotspot mutation TCR library and our proprietary, non-viral Sleeping Beauty gene transfer platform to design and manufacture patient-specific cell therapies that target neoantigens arising from shared tumor-specific mutations in key oncogenic genes, including KRAS, TP53 and EGFR. In collaboration with the MD Anderson Cancer Center, or MD Anderson, we were enrolling and treating patients for a Phase 1/2 clinical trial which was evaluating 12 TCRs reactive to mutated KRAS, TP53 and EGFR from our TCR library for the investigational treatment of non-small cell lung, colorectal, endometrial, pancreatic, ovarian and bile duct cancers, which we refer to as our TCR-T Library Phase 1/2 Trial.

We have not generated any product revenue and have incurred significant net losses in each year since our inception. For the year ended December 31, 2023, we had a net loss of $35.1 million, and as of December 31, 2023, we have incurred approximately $915.8 million of accumulated deficit since our inception in 2003. We expect to continue to incur significant operating expenditures and net losses for the foreseeable future.

On August 14, 2023, we announced a strategic reprioritization of our business and wind down of our TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, we have reduced our workforce during the third and fourth quarters of 2023, and we continue working to reduce costs in order to extend our cash runway. We continue to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. We have engaged Cantor Fitzgerald & Co., or Cantor, to act as strategic advisor for this process. In addition, on August 14, 2023, we announced that we had provided the requisite notice to the National Cancer Institute, or the NCI, to terminate the Cooperative Research and Development Agreement, dated January 9, 2017, by and among us, the NCI and Intrexon Corporation, or Intrexon, as amended (such agreement referred to herein as the CRADA), pursuant to its terms, effective October 13, 2023. In addition, on October 27, 2023, we provided notice of termination of the Patent License with the NCI, effective December 26, 2023.

2023 Developments

TCR-T Library Phase 1/2 Trial

Eight patients were treated and evaluated in our TCR-T Library Phase 1/2 Trial. Patients with pancreatic (3), colorectal (4) and non-small cell lung cancer (1) were treated, with certain pancreatic and colorectal patients also having lung metastases. Overall, the trial showed our T-cells were generally well-tolerated in all evaluable participants with no dose-limiting toxicities (DLTs) and no immune effector cell-associated neurotoxicity syndrome (ICANS) were observed. All cytokine release syndrome (CRS) events were within grades 1-3 and were self-limiting or resolved with standard clinical management and, in some cases, a single dose of tocilizumab.

One patient with non-small cell lung cancer (NSCLC) achieved an objective partial response with six months progression-free survival. Six other patients achieved a best overall response of stable disease. The total overall response rate was 13% and disease control rate was 87% in evaluable patients with advanced, metastatic, refractory solid tumors (see Figure A). Disease control was measured by objective responses and stable disease. Increased secretion of interferon-gamma relative to baseline was detected in all patients' serum post-cell transfer suggesting recognition of the tumor by the infused TCR-T cells. Persistence of TCR-T cells in peripheral blood was detected in all evaluable patients at their last follow-up, including up to six months in one patient. Infiltration of TCR-T cells into the tumor was also detected in three samples where a fresh biopsy was collected suggesting homing to the tumor microenvironment. All patients have progressed or withdrawn from the trial and long-term follow-up is ongoing for a subset of patients with no further intervention per the treatment protocol. This trial established proof-of-concept that Sleeping Beauty TCR-T cells can result in objective clinical responses and recognize established tumors in vivo.

Despite the encouraging TCR-T Library Phase 1/2 Trial data, based on the substantial cost to continue development and the current financing environment, we announced in August 2023 that we would not pursue any further development of our clinical programs.

hunTR® Platform

We have discovered multiple proprietary TCRs targeting driver mutations through our hunTR TCR discovery platform. In addition to TCRs that recognize KRAS and TP53 mutations similar to those licensed from the NCI, we identified additional TCRs that bind to other driver

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mutations and TCRs that are restricted to additional HLAs. We believe that the hunTR library has the potential to allow for the treatment of a large patient population.

Strategic Alternatives

We continue to explore strategic alternatives, which may include but are not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. In connection with the strategic reprioritization, we reduced our workforce by approximately 95% to date in order to streamline the organization and to maximize our cash runway.

Nasdaq Delisting Determination

As previously disclosed on January 4, 2023, we were notified by the Listing Qualifications Department, or the Staff, of The Nasdaq Stock Market LLC, or Nasdaq, that we were in breach of Listing Rule 5450(a)(1), or the Minimum Bid Price Rule, for continued listing on the Nasdaq Global Select Market because the minimum bid price of our listed securities for 30 consecutive business days had been less than $1 per share. In accordance with Nasdaq Listing Rule 5810(c)(3)(A), or the Compliance Period Rule, we were provided a period of 180 calendar days, or until July 3, 2023, or the Compliance Date, to regain compliance with the Bid Price Requirement. On June 22, 2023, we applied to transfer our listing from the Nasdaq Global Select Market to the Nasdaq Capital Market, or the Transfer. On July 5, 2023, Nasdaq notified us that the Transfer was approved, and that, in connection with the Transfer, we were eligible for an additional 180 calendar day period, or until January 2, 2024, or the Extended Compliance Date, to regain compliance with the Minimum Bid Price Rule. On November 8, 2023, we received a Staff Delisting Determination letter, or the Delisting Determination, from the Staff notifying us that, because the closing bid price for our common stock was below $0.10 per share for 10 consecutive trading days during the Extended Compliance Period, the Staff has determined to suspend trading of our common stock on Nasdaq pursuant to Nasdaq Listing Rule 5810(c)(3)(A)(iii), effective November 17, 2023, and file a Form 25-NSE with the SEC to remove our common stock from listing and registration under the Securities Exchange Act of 1934, as amended, unless we timely request an appeal of the Delisting Determination to a Nasdaq Hearings Panel, or the Panel. We timely requested a hearing before the Panel to appeal the Delisting Determination and were granted a hearing before the Panel on January 25, 2024. This timely request for a hearing stayed the suspension or delisting of our common stock so our common stock continued to trade on the Nasdaq Capital Market under the symbol “TCRT” while the appeal process was pending. By letter dated February 16, 2024, we were notified by The Nasdaq Stock Market LLC that we regained compliance with the minimum $1.00 bid price requirement, and otherwise satisfied all applicable criteria for continued listing on The Nasdaq Capital Market. As such, the listing matter was closed. Pursuant to Nasdaq Listing Rule 5815(d)(4)(B), we will be subject to a mandatory panel monitor for the one-year period through February 16, 2025.

Financial Overview

Collaboration Revenue

We recognize research and development funding revenue over the estimated period of performance. To date we have not generated product revenue. Unless and until we receive approval from the FDA and/or other regulatory authorities for our product candidates, we cannot sell our products and will not have product revenue.

Research and Development Expenses

Our research and development expenses have historically consisted primarily of salaries and related expenses for personnel, costs of contract manufacturing services, costs of facilities, reagents, and equipment, fees paid to professional service providers in conjunction with our clinical trials, fees paid to contract research organizations, or CROs, in conjunction with clinical trials, fees paid to CROs in conjunction with costs of materials used in research and development, consulting, license and milestone payments, sponsored research fees paid to third parties and impairment charges to prepaid expenses and other current assets.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries, benefits and stock-based compensation, consulting and professional fees, including patent related costs, general corporate costs and facility costs not otherwise included in research and development expenses or cost of product revenue.

Restructuring Costs

Restructuring costs consists of severance provided to terminated employees.

Other Income (Expense)

Other income (expense) consists primarily of interest expense associated with our amended Loan and Security Agreement (as defined below), interest income on our cash balances and sublease income.

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Results of Operations for the Fiscal Years ended December 31, 2023 and 2022

	Year Ended December 31,
	2023			2022
Collaboration revenue	$	5		$	2,922
Operating expenses:
Research and development		16,279			25,018
General and administrative		12,219			13,142
Gain on lease modification and termination		(298	)		(133	)
Restructuring costs		1,269			—
Property and equipment and right-of-use assets impairment		4,803			—
Total operating expenses		34,272			38,027
Loss from operations		(34,267	)		(35,105	)
Other income (expense):
Interest expense		(1,921	)		(3,154	)
Other income (expense), net		1,048			529
Other income (expense), net		(873	)		(2,625	)
Net loss	$	(35,140	)	$	(37,730	)

Collaboration Revenue

Collaboration revenue during the years ended December 31, 2023 and 2022 were as follows:

	Year Ended December 31,
	2023		2022		Change
($ in thousands)
Collaboration revenue	$	5	$	2,922	$	(2,917	)	(100	)%

Collaboration revenue during the year ended December 31, 2023 was $5 thousand compared to $2.9 million during the year ended December 31, 2022. The decrease was primarily due to $2.9 million milestone revenue earned under the Solasia License and Collaboration Agreement for the first commercial sale of darinaparsin, which did not recur in the year ended December 31, 2023.

Research and Development Expenses

Research and development expenses during the years ended December 31, 2023 and 2022 were as follows:

	Year Ended December 31,
	2023		2022		Change
($ in thousands)
Research and development expenses	$	16,279	$	25,018	$	(8,739	)	(35	)%

Research and development expenses for the year ended December 31, 2023 decreased by $8.7 million when compared to the year ended December 31, 2022 primarily due to lower program expenses of $1.1 million as a result of the wind down of our clinical activities, a $3.0 million decrease in employee-related expenses due to our reduced headcount, an accrual adjustment related to our de-prioritized clinical programs of $1.0 million, a $0.9 million decrease in facilities costs following the termination of our leases, a one-time $2.5 million milestone payment to MD Anderson in 2022 under the terms of our patent and technology license agreement that did not recur in 2023 and a $0.2 million decrease in consulting costs due to the reduced scope of activities.

Our clinical stage projects included our TCR-T Library Phase 1/2 Trial evaluating TCRs from our library for the investigational treatment of non-small cell lung, colorectal, endometrial, pancreatic, ovarian and bile duct cancers, which we are currently in the process of winding down.

General and Administrative Expenses

General and administrative expenses during the years ended December 31, 2023 and 2022 were as follows:

	Year Ended December 31,
	2023		2022		Change
($ in thousands)
General and administrative expenses	$	12,219	$	13,142	$	(923	)	(7	)%

General and administrative expenses for the year ended December 31, 2023 decreased by $0.9 million as compared to the year ended December 31, 2022, primarily due to a $1.1 million decrease in employee-related expenses as a result of our reduced headcount and a $0.4

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million decrease in insurance fees, partially offset by a $0.6 million increase in consulting and professional services expenses related to higher legal costs.

Gain on lease modification and termination

Gain on lease modification and termination during the years ended December 31, 2023 and 2022 was as follows:

	Year Ended December 31,
	2023			2022			Change
($ in thousands)
Gain on lease modification and termination	$	(298	)	$	(133	)	$	(165	)	124	%

Gain on lease modification and termination during the year ended December 31, 2023 was $0.3 million as compared to $0.1 million during the year ended December 31, 2022. As a result of real estate lease terminations during 2023, the associated lease liabilities and right-of-use assets were remeasured based on the revised lease payments, resulting in a gain of $0.3 million. As a result of a real estate lease modification during 2022, the associated lease liability and right-of-use asset were remeasured based on the revised lease payments, resulting in a gain of $0.1 million.

Restructuring costs

Restructuring costs during the years ended December 31, 2023 and 2022 were as follows:

	Year Ended December 31,
	2023		2022		Change
($ in thousands)
Restructuring costs	$	1,269	$	—	$	1,269	100	%

Restructuring costs during the year ended December 31, 2023 were $1.3 million as compared to $0 during the year ended December 31, 2022, due to severance expenses for terminated employees related to our strategic reprioritization announced in August 2023.

Impairments

Impairments during the years ended December 31, 2023 and 2022 were as follows:

	Year ended December 31,
	2023		2022		Change
($ in thousands)
Property and equipment and right-of-use assets impairment	$	4,803	$	—	$	4,803	100	%

Property and equipment and right-of-use asset impairments of $4.8 million were recorded during the year ended December 31, 2023, compared to $0 during the year ended December 31, 2022, following the announcement of our strategic reprioritization in August 2023.

Other Income (Expense)

Other income (expense) during the years ended December 31, 2023 and 2022 was as follows:

	Year Ended December 31,
	2023			2022			Change
($ in thousands)
Interest expense	$	(1,921	)	$	(3,154	)	$	1,233	(39	)%
Other income, net		1,048			529			519	98	%
Total	$	(873	)	$	(2,625	)	$	1,752	(67	)%

Total other expense, net for the year ended December 31, 2023 decreased by $1.8 million as compared to the year ended December 31, 2022 due to lower interest expense associated with our amended Loan and Security Agreement, as defined below, of $1.2 million and increased interest income of $0.5 million recognized during the year ended December 31, 2023 as a result of higher interest rates earned on our cash balances.

Liquidity and Capital Resources

Sources of Liquidity

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We have not generated any revenue from product sales. Since inception, we have incurred net losses and negative cash flows from our operations.

To date, we have financed our operations primarily through public offerings of our common stock, private placements of our convertible equity securities, term debt and collaborations. Through December 31, 2023, we have received an aggregate of $729.2 million from issuances of equity.

On August 14, 2023, we announced a strategic reprioritization of our business and wind down of our TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, we have reduced our workforce, and we continue working to reduce costs in order to extend our cash runway. We continue to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. We have engaged Cantor to act as strategic advisor for this process.

We follow the guidance of Accounting Standards Codification, or ASC, Topic 205-40, Presentation of Financial Statements - Going Concern, in order to determine whether there is substantial doubt about our ability to continue as a going concern for one year after the date our financial statements are issued. Given our current development plans and cash management efforts, we anticipate that our cash resources will be sufficient to fund operations into the third quarter of 2024. Our ability to continue operations after our current cash resources are exhausted depends on our ability to obtain additional financing, as to which no assurances can be given. Cash requirements may vary materially from those now planned because of changes in our focus and direction of our research and development programs, competitive and technical advances, patent developments, regulatory changes or other developments. If adequate additional funds are not available when required, management may need to curtail its development efforts and planned operations to conserve cash.

Based on the current cash forecast, management has determined that our present capital resources will not be sufficient to fund our planned operations for at least one year from the issuance date of the financial statements, which raises substantial doubt as to our ability to continue as a going concern. This forecast of cash resources and planned operations is forward-looking information that involves risks and uncertainties, and the actual amount of expenses could vary materially and adversely as a result of a number of factors.

2022 Public Offering

On November 29, 2022, we entered into an underwriting agreement, or the Underwriting Agreement, with Cantor Fitzgerald & Co., or the Underwriter, as the sole underwriter, relating to the issuance and sale in an underwritten offering, or the Offering, of 1,615,247 shares of our common stock, or the Firm Shares, to the Underwriter at a price of $9.2865 per share.

Our net proceeds from the Offering were $14.7 million (before accounting for the partial exercise of the Underwriter's option as described below) after deducting underwriting discounts and commissions and offering expenses payable by us.

Under the terms of the Underwriting Agreement, we granted the Underwriter an option, exercisable for 30 days, to purchase up to an additional 242,287 shares of common stock, or, together with the Firm Shares, the Shares, at the same price per share as the Firm Shares. On January 5, 2023, the Underwriter partially exercised its option to purchase 14,420 shares of common stock.

2022 Equity Distribution Agreement

On August 12, 2022, we entered into an Equity Distribution Agreement, or the Equity Distribution Agreement, with Piper Sandler & Co., or Piper Sandler, pursuant to which we can offer and sell, from time to time at our sole discretion, shares of our common stock having an aggregate offering price of up to $50 million through Piper Sandler as our sales agent in an “at the market offering.” Piper Sandler will receive a commission of 3.0% of the gross proceeds of any common stock sold under the Equity Distribution Agreement. During the years ended December 31, 2023 and 2022, there were no sales of our common stock under the Equity Distribution Agreement.

2021 Loan and Security Agreement

On August 6, 2021, we entered into a Loan and Security Agreement, or the Loan and Security Agreement, with Silicon Valley Bank, or SVB. The Loan and Security Agreement provided for an initial term loan of $25.0 million funded at the closing, or the Term A Tranche, with an additional tranche of $25.0 million available if certain funding and clinical milestones were met by August 31, 2022. The SVB Facility and related obligations under the Loan and Security Agreement were secured by substantially all of our properties, rights and assets, except for our intellectual property (which was subject to a negative pledge under the Loan and Security Agreement). In addition, the Loan and Security Agreement contained customary representations, warranties, events of default and covenants.

Effective December 28, 2021, we entered into the First Amendment to the Loan and Security Agreement. Under the terms of the First Amendment, the additional tranche, which remained unfunded, was eliminated, leaving only the Term A Tranche, which is referred to as the SVB Facility. The SVB Facility bore interest at a floating rate per annum on the outstanding loans, payable monthly, at the greater of (a) 7.75% and (b) the current published U.S. prime rate, plus a margin of 4.5%. Commencing on September 1, 2022, aggregate outstanding borrowings became repayable in twelve consecutive, equal monthly installments of principal plus accrued interest.

All outstanding obligations under the amended Loan and Security Agreement were due and payable on August 1, 2023. We also owed SVB $1.4 million as a final payment, or the Final Payment.

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Effective March 30, 2023, we entered into a Third Amendment to the Loan and Security Agreement, or the Third Amendment. Under the terms of the Third Amendment, we were no longer required to maintain all of our operating accounts, depository accounts and excess cash with SVB, and were instead only required to maintain a single operating or depository account at SVB. The Third Amendment also modified the cash collateralization requirement, such that we were required to cash collateralize the entire sum of the outstanding principal amount of the SVB Facility plus an amount equal to the Final Payment, which amount was to be reduced commensurate with each regularly scheduled monthly payment of principal and interest on the SVB Facility.

On May 1, 2023, we paid SVB all amounts outstanding under the amended Loan and Security Agreement, comprised of the entire outstanding principal amount under the SVB Facility, all accrued and unpaid interest and the Final Payment. The payment was subject to a prepayment premium of 2.00%.

In connection with our entry into the Loan and Security Agreement in August 2021, we issued to SVB warrants to purchase (i) up to 28,856 shares of our common stock, in the aggregate, and (ii) up to an additional 28,856 shares of Common Stock, in the aggregate, in the event we achieved certain clinical milestones, in each case at an exercise price per share of $33.30. In connection with our entry into the First Amendment in December 2021, we amended and restated the warrants issued to SVB. As amended and restated, the warrants are for up to 43,307 shares of our common stock, in the aggregate, with an exercise price of $17.40 per share, or the SVB Warrants. The SVB Warrants expire on August 6, 2031.

Cash Flows

The following table summarizes our net increase (decrease) in cash and cash equivalents for the years ended December 31, 2023 and 2022:

	Year Ended December 31,
	2023			2022
($ in thousands)
Net cash provided by (used in):
Operating activities	$	(30,142	)	$	(29,232	)
Investing activities		1,346			(193	)
Financing activities		(18,138	)		6,367
Net decrease in cash and cash equivalents	$	(46,934	)	$	(23,058	)

Cash flows from operating activities represent the cash receipts and disbursements related to all of our activities other than investing and financing activities. Operating cash flow is derived by adjusting our net loss for:

•Non-cash operating items such as depreciation, amortization, impairment charges, stock-based compensation and reduction in right-of-use assets; and

•Changes in operating assets and liabilities which reflect timing differences between the receipt and payment of cash associated with transactions and when they are recognized in results of operations.

Net cash used in operating activities for the year ended December 31, 2023 was $30.1 million, as compared to $29.2 million for the year ended December 31, 2022. The net cash used in operating activities for the year ended December 31, 2023 was primarily a result of our net loss of $35.1 million, adjusted for $11.3 million of non-cash items such as depreciation, property and equipment and right-of-use assets impairment, stock-based compensation and a decrease in the carrying amount of right-of-use assets, an increase in prepaid expenses of $1.4 million and decreases in accounts payable of $0.8 million, accrued expenses of $4.0 million and lease liabilities of $0.6 million, offset by a decrease in non-current assets of $0.5 million. The net cash used in operating activities for the year ended December 31, 2022 was primarily a result of our net loss of $37.7 million, adjusted for $7.6 million of non-cash items such as depreciation, stock-based compensation and a decrease in the carrying amount of right-of-use assets, a decrease in accounts receivable of $1.1 million and a decrease in prepaid expenses and other assets of $1.0 million, partially offset by a decrease in accrued expenses of $0.7 million and a decrease in lease liabilities of $0.5 million.

Net cash provided by investing activities was $1.3 million for the year ended December 31, 2023 as compared to net cash used in investing activities of $0.2 million for the year ended December 31, 2022. The increase in net cash provided by investing activities for the year ended December 31, 2023 compared to the year ended December 31, 2022 was primarily due to proceeds from the disposal of property and equipment of $1.5 million, partially offset by purchases of property and equipment of $0.2 million.

Net cash used in financing activities was $18.1 million for the year ended December 31, 2023 compared to $6.4 million of net cash provided by financing activities for the year ended December 31, 2022. The increase in net cash used in financing activities for the year ended December 31, 2023 compared to the year ended December 31, 2022 was primarily due to the repayment of long-term debt of $18.1 million and debt extinguishment costs of $0.1 million, partially offset by proceeds from the issuance of common stock of $0.1 million. The $6.4 million provided by financing activities during the year ended December 31, 2022 related primarily to $14.7 million in net proceeds from the issuance of common stock (before accounting for the partial exercise of the Underwriter's option), offset by $8.3 million of repayments of long-term debt.

Operating Capital and Capital Expenditure Requirements

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We anticipate that losses will continue for the foreseeable future. As of December 31, 2023, our accumulated deficit was approximately $915.8 million. Our actual cash requirements may vary materially from those planned because of a number of factors, including changes in the focus, direction and pace of our development programs, including those resulting from the recently announced exploration of strategic alternatives and related workforce reduction.

As of December 31, 2023, we had approximately $6.1 million of cash and cash equivalents. In light of our announced strategic reprioritization and concurrent exploration of strategic alternatives, including our decision to halt work on our TCR-T Library Phase 1/2 Trial, our development programs and reducing our workforce, we anticipate our cash resources will be sufficient to fund our operations into the third quarter of 2024. In order to continue our operations beyond our forecasted runway, including, if necessary, to continue to explore strategic alternatives, we will need to raise additional capital, and we have no committed sources of additional capital at this time. The forecast of cash resources is forward-looking information that involves risks and uncertainties, and the actual amount of our expenses could vary materially and adversely as a result of a number of factors. We have based our estimates on assumptions that may prove to be wrong, and our expenses could prove to be significantly higher than we currently anticipate. Management does not know whether additional financing will be on terms favorable or acceptable to us when needed, if at all. If adequate additional funds are not available when required, we may be unable to persist as a going concern for sufficient time to identify or execute on any strategic alternatives.

Working capital as of December 31, 2023 was $6.3 million, consisting of $8.3 million in current assets and $2.0 million in current liabilities. Working capital as of December 31, 2022 was $15.7 million, consisting of $39.9 million in current assets and $24.2 million in current liabilities.

Operating Leases

On March 12, 2019, we entered into a lease agreement for office space in Houston, Texas at MD Anderson through April 2021. On October 15, 2019, we entered into another lease agreement for additional office and laboratory space in Houston through February 2027. On April 7, 2020, we entered into amendments to our existing lease to lease additional office and laboratory space in Houston through February 2027. On December 15, 2020, we entered into another lease in Houston with MD Anderson which provided us additional office and laboratory space through April 2028.

In April 2022, we modified our real estate lease agreement executed on December 15, 2020 with MD Anderson. The modification reduced our leased space from 18,111 square feet to 3,228 square feet. As a result, the associated lease liability and right-of-use asset were remeasured to $0.4 million based on revised lease payments.

In April 2023, we executed an agreement to terminate the lease for our remaining office space in Boston, Massachusetts. Under the terms of the lease termination, we were required to pay a $0.2 million termination fee. Additionally, we have been released from a sub-sublease of certain of our office space in Boston signed in June 2022 as it has been assigned to the Boston office space's landlord in conjunction with the agreement to terminate the lease for the remaining office space.

In August 2023, in accordance with the lease agreement executed on December 15, 2020, we provided notification to the landlord to terminate office space of 3,228 square feet in Houston, Texas. As a result, the associated lease liability and right-of-use asset were remeasured to $19 thousand, reflecting the revised lease payments and term end date of November 2023.

On November 1, 2023, we and MD Anderson, as landlord, agreed to mutually terminate the leases dated October 15, 2019 and April 7, 2020, which represent office space totaling 14,037 square feet, effective November 15, 2023. As a result, we agreed to make a final payment of $0.1 million to the landlord.

As of December 31, 2023, we had terminated all operating leases and therefore have no remaining lease commitments, other than a short-term lease.

Royalty and License Fees

On May 28, 2019, we entered into the Patent License with the NCI. The terms of the Patent License required us to pay the NCI minimum annual royalties in the amount of $0.3 million, which would be reduced to $0.1 million once the aggregate minimum annual royalties paid by us equaled $1.5 million. For the year ended December 31, 2023, we recognized $0.3 million in royalty payments under the Patent License, and we recognized $0.3 million in royalty payments for the year ended December 31, 2022. As of December 31, 2023, we paid a total of $0.8 million in minimum annual royalty payments under the Patent License.

Pursuant to the Patent License, we were also required to make performance-based payments contingent upon the successful completion of clinical and regulatory benchmarks relating to the licensed products. Of such payments, the aggregate potential benchmark payments were $4.3 million, of which aggregate payments of $3.0 million were due only after marketing approval in the United States or in Europe, Japan, Australia, China or India. The first benchmark payment of $0.1 million was due upon the initiation of our TCR-T Library Phase 1/2 Trial. In addition, we were required to pay the NCI one-time benchmark payments following aggregate net sales of licensed products at certain aggregate net sales ranging from $250.0 million to $1.0 billion. The aggregate potential amount of these benchmark payments was $12.0 million. No payments were made during the year ended December 31, 2023, compared to payments of $0.1 million during the year ended December 31, 2022. On October 27, 2023, we provided notice of termination of the Patent License with the NCI, effective December 26, 2023.

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On October 5, 2018, we entered into the License Agreement with PGEN. Under the License Agreement, we are obligated to pay PGEN an annual licensing fee of $0.1 million expected to be paid through the term of the agreement and we have also agreed to reimburse certain historical costs of PGEN up to $1.0 million.

Pursuant to the terms of the License Agreement, we were responsible for contingent milestone payments totaling up to an additional $52.5 million for each exclusively licensed program upon the initiation of later stage clinical trials and upon the approval of exclusively licensed products in various jurisdictions. In addition, we were also required to pay Precigen tiered royalties ranging from low-single digits to high-single digits on the net sales derived from the sale of any approved IL-12 products and CAR products as well as royalties ranging from low-single digits to mid-single digits on the net sales derived from the sales of any approved TCR products, up to a maximum royalty amount of $100.0 million in the aggregate. We were also required to pay Precigen 20% of any sublicensing income received by us relating to the licensed products. We were also responsible for all development costs associated with each of the licensed products. Precigen was required to pay us royalties ranging from low-single digits to mid-single digits on the net sales derived from the sale of Precigen's CAR products, up to a maximum royalty amount of $100.0 million. Pursuant to the A&R License Agreement, all royalty and milestone obligations between us and Precigen have been removed, and annual license payments due to Precigen have been reduced from $100 thousand to $75 thousand. For the years ended December 31, 2023 and 2022, we made licensing fee payments in accordance with the terms of the agreement. We have discovered multiple proprietary TCRs targeting driver mutations through its hunTR TCR discovery platform, including many of the same KRAS and TP53 mutations as were licensed from the NCI.

In June 2022, Solasia Pharma K. K., or Solasia, announced that darinaparsin had been approved from relapsed or refractory Peripheral T-Cell Lymphoma by the Ministry of Health, Labor and Welfare in Japan. During the year ended December 31, 2023, we recorded collaboration revenue of $5 thousand for royalties on sales under the License and Collaboration Agreement, dated March 7, 2011, as amended on July 31, 2014 between Solasia and us, compared to $2.9 million in milestone revenue related to Solasia's achievement of certain sales-based milestones in Japan for the year ended December 31, 2022.

Critical Accounting Policies and Significant Estimates

Management’s Discussion and Analysis of Financial Condition and Results of Operations is based upon our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these 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 financial statements as well as the reported expenses during the reporting periods. We evaluate our estimates and judgments on an ongoing basis. Actual results may differ materially from these estimates under different assumptions or conditions.

We believe the following are our more significant estimates and judgments used in the preparation of our financial statements:

•Clinical trial expenses and other research and development expenses;

•Collaboration agreements;

•Fair value measurements of stock-based compensation; and

•Income taxes.

Research and Development Costs / Clinical Trial Expenses

As part of the process of preparing our financial statements, we are required to estimate our accrued research and development expenses. This process involves reviewing open contracts and purchase orders, communicating with our personnel and third-party vendors to identify services that have been performed on our behalf and estimating the level of service performed and the associated costs incurred for the services when we have not yet been invoiced or otherwise notified of the actual costs. The majority of our service providers invoice us in arrears for services performed, on a predetermined schedule or when contractual milestones are met; however, a few require advanced payments. We make estimates of our accrued expenses as of each balance sheet date in our financial statements based on facts and circumstances known to us at that time. Examples of estimated accrued research and development expenses include fees paid to:

•CROs in connection with performing research services on our behalf and clinical trials;

•investigative sites or other providers in connection with clinical trials;

•vendors in connection with preclinical and clinical development activities; and

•vendors related to product manufacturing, development, and distribution of preclinical and clinical supplies.

We base our expenses related to preclinical studies and clinical trials on our estimates of the services received and efforts expended pursuant to quotes and contracts with multiple CROs that conduct and manage clinical trials on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a prepayment of the clinical expense. Payments under some of these contracts depend on factors such as the completion of clinical trial milestones. In accruing service fees, we estimate the time period over

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which services will be performed, enrollment of patients, number of sites activated and the level of effort to be expended in each period. Although we do not expect our estimates to be materially different from amounts actually incurred, our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in changes to our previous estimates, which we considered reasonably reliable at the time. During the year ended December 31, 2023, we recorded an accrual adjustment related to our de-prioritized clinical programs of $1.0 million.

Revenue Recognition from Collaboration Agreements

We primarily generate revenue through collaboration arrangements with strategic partners for the development and commercialization of product candidates. Commencing January 1, 2018, we recognized revenue in accordance with Financial Accounting Standards Board (“FASB”) ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods and/or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that we determine are within the scope of ASC 606, we perform the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) each performance obligation is satisfied.

We recognize collaboration revenue under certain of our license or collaboration agreements that are within the scope of ASC 606. Our contracts with customers typically include promises related to licenses to intellectual property, research and development services and options to purchase additional goods and/or services. If the license to our intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, we recognize revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. Contracts that include an option to acquire additional goods and/or services are evaluated to determine if such option provides a material right to the customer that it would not have received without entering into the contract. If so, the option is accounted for as a separate performance obligation. If not, the option is considered a marketing offer which would be accounted for as a separate contract upon the customer’s election.

The terms of our arrangements with customers typically include the payment of one or more of the following: (i) non-refundable, up-front payment, (ii) development, regulatory and commercial milestone payments, (iii) future options and (iv) royalties on net sales of licensed products. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. We measure the transaction price based on the amount of consideration to which we expect to be entitled in exchange for transferring the promised goods and/or services to the customer. We utilize the most likely amount method to estimate the amount of variable consideration, to predict the amount of consideration to which we will be entitled. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. At the inception of each arrangement that includes development and regulatory milestone payments, we evaluate whether the associated event is considered probable of achievement and estimate the amount to be included in the transaction price using the most likely amount method. Milestone payments that are not within the control of us or the licensee, such as those dependent upon receipt of regulatory approval, are not considered to be probable of achievement until the triggering event occurs. At the end of each reporting period, we reevaluate the probability of achievement of each milestone and any related constraint, and if necessary, adjust our estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment. For arrangements that include sales-based royalties, including milestone payments based upon the achievement of a certain level of product sales, we recognize revenue upon the later of: (i) when the related sales occur or (ii) when the performance obligation to which some or all of the payment has been allocated has been satisfied (or partially satisfied). Consideration that would be received for optional goods and/or services is excluded from the transaction price at contract inception.

We allocate the transaction price to each performance obligation identified in the contract on a relative standalone selling price basis. However, certain components of variable consideration are allocated specifically to one or more particular performance obligations in a contract to the extent both of the following criteria are met: (i) the terms of the payment relate specifically to the efforts to satisfy the performance obligation or transfer the distinct good or service and (ii) allocating the variable amount of consideration entirely to the performance obligation or the distinct good or service is consistent with the allocation objective of the standard whereby the amount allocated depicts the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services. We develop assumptions that require the use of judgment to determine the standalone selling price for each performance obligation identified in each contract. The key assumptions utilized in determining the standalone selling price for each performance obligation may include forecasted revenue, development timelines, estimated research and development costs, discount rates, likelihood of exercise and probabilities of technical and regulatory success.

Revenue is recognized based on the amount of the transaction price that is allocated to each respective performance obligation when or as the performance obligation is satisfied by transferring a promised good and/or service to the customer. For performance obligations that are satisfied over time, we recognize revenue by measuring the progress toward complete satisfaction of the performance obligation using a single method of measuring progress which depicts the performance in transferring control of the associated goods and/or services to the customer.

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We use input methods to measure the progress toward the complete satisfaction of performance obligations satisfied over time. We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment.

Accounting for Stock-Based Compensation

Stock-based compensation cost is measured at the grant date, based on the estimated fair value of the award, and is recognized as expense over the employee’s requisite service period. Stock-based compensation expense is based on the number of awards ultimately expected to vest and is reduced for forfeitures as they occur. Consistent with prior years, the Company uses the Black-Scholes option pricing model, which requires estimates of the expected term option holders will retain their options before exercising them and the estimated volatility of the Company’s common stock price over the expected term.

We review our valuation assumptions periodically and, as a result, we may change our valuation assumptions used to value share-based awards granted in future periods. Such changes may lead to a significant change in the expense we recognize in connection with share-based payments.

Our assumptions are estimated as follows:

•the fair market value of our common stock is considered the quoted market price on Nasdaq;

•the expected volatility is based on the historical stock volatility of our common stock over a sufficient period of time equal to the expected term of the option;

•the expected term represents the period that our stock options are expected to be outstanding;

•the risk-free interest rate is based on the yields of U.S. Treasury securities with maturities commensurate with the expected term of the award; and

•we have not paid dividends on our common stock nor do we expect to pay dividends in the foreseeable future.

Income Taxes

In preparing our financial statements, we estimate our income tax liability in each of the jurisdictions in which we operate by estimating our actual current tax expense together with assessing temporary differences resulting from differing treatment of items for tax and financial reporting purposes. These differences result in deferred tax assets and liabilities, which, prior to the consideration for the need for a valuation allowance, are included on our balance sheet. Significant management judgment is required in assessing the realizability of our deferred tax assets. In performing this assessment, we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. In making this determination, under the applicable financial accounting standards, we are allowed to consider the scheduled reversal of deferred tax liabilities, projected future taxable income and the effects of tax planning strategies. Our estimates of future taxable income include, among other items, our estimates of future income tax deductions related to the exercise of stock options. In the event that actual results differ from our estimates, we adjust our estimates in future periods and we may need to establish a valuation allowance, which could materially impact our business, financial condition, results of operations, cash flows and prospects.

We account for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors that include, but are not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. We evaluate uncertain tax positions on an annual basis and adjust the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions. Our liabilities for uncertain tax positions can be relieved only if the contingency becomes legally extinguished through either payment to the taxing authority or the expiration of the statute of limitations, the recognition of the benefits associated with the position meet the “more-likely-than-not” threshold or the liability becomes effectively settled through the examination process. We consider matters to be effectively settled once the taxing authority has completed all of its required or expected examination procedures, including all appeals and administrative reviews; we have no plans to appeal or litigate any aspect of the tax position; and we believe that it is highly unlikely that the taxing authority would examine or re-examine the related tax position. We also accrue for potential interest and penalties related to unrecognized tax benefits in income tax expense.

Recent Accounting Pronouncements

For a discussion of new accounting standards, please read Note 3 to the accompanying financial statements, Summary of Significant Accounting Policies included in this report.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

As a smaller reporting company, as defined by Rule 12b-2 of the Exchange Act, we are not required to provide the information under this Item 7A.

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Item 8. Financial Statements and Supplementary Data

The information required by this Item 8 is contained on pages F-1 through F-25 of this Annual Report and is incorporated herein by reference. All share numbers and share prices presented in this Item 8 have been adjusted to reflect the 1‑for‑15 reverse stock split of the Company’s common stock effected on January 31, 2024.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosures

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures.

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer and our principal accounting officer, we have evaluated the effectiveness of our disclosure controls and procedures, as such term is defined under Rule 13a-15(e) or 15d-15(e) promulgated under the Exchange Act, as of December 31, 2023. Based on that evaluation, our principal executive officer and principal financial officer has concluded that as of December 31, 2023, our disclosure controls and procedures were effective.

We note that the design of any system of controls is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving the stated goals under all potential future conditions.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rules 13a-15(f) and 15d-15(f) promulgated under the Exchange Act as a process designed by, or under the supervision of, our principal executive officer and principal financial officer and our principal accounting officer and effected by our board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:

•Pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of our assets;

•Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and

•Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

Under the supervision and with the participation of management, including our principal executive officer and principal financial officer and our principal accounting officer, we assessed our internal control over financial reporting as of December 31, 2023, based on criteria for effective internal control over financial reporting established in Internal Control - Integrated Framework (2013), issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Our management’s assessment of the effectiveness of our internal control over financial reporting included testing and evaluating the design and operating effectiveness of our internal controls. In management’s opinion, we have maintained effective internal control over financial reporting as of December 31, 2023, based on the criteria discussed above.

Inherent Limitations on Internal Controls

Our management, including our principal executive officer and principal financial officer, and our principal accounting officer, do not expect that our disclosure controls and procedures or our internal controls over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within our company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by individual acts of some persons, by collusion of two or more people, or by management override of the control. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions, or the degree of compliance with the policies or procedures may deteriorate. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree

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of compliance with the policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Changes in Internal Controls over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) and Rule 15d-15(f) of the Exchange Act) that occurred during the fiscal quarter ended December 31, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

Trading Plans

During the three months ended December 31, 2023, no director or Section 16 officer of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" as each term is defined in Item 408(a) of Regulation S-K.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this Item 10 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2024 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 11. Executive Compensation

The information required by this Item 11 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2024 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this Item 12 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2024 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this Item 13 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2024 Annual Meeting of Stockholders and is incorporated herein by reference.

Item 14. Principal Accountant Fees and Services

The information required by this Item 14 will be included in our definitive proxy statement to be filed with the SEC with respect to our 2024 Annual Meeting of Stockholders and is incorporated herein by reference.

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PART IV

Item 15. Exhibits, Financial Statement Schedules

(1) Financial Statements:

The Financial Statements required to be filed by Item 8 of this Annual Report, and filed in this Item 15, are as follows:

	Page
Report of Independent Registered Public Accounting Firm		F-1
Balance Sheets as of December 31, 2023 and 2022		F-3
Statements of Operations for the Years Ended December 31, 2023 and 2022		F-4
Statements of Changes in Stockholders’ Equity for the Years Ended December 31, 2023 and 2022		F-5
Statements of Cash Flows for the Years Ended December 31, 2023 and 2022		F-6
Notes to Financial Statements		F-7

(2) Financial Statement Schedules:

Schedules are omitted because they are not applicable, or are not required, or because the information is included in the financial statements and notes thereto.

(3) Exhibits:

Exhibit No.	Description of Document
2.1	Agreement and Plan of Merger among the Registrant (formerly “EasyWeb, Inc.”), ZIO Acquisition Corp. and ZIOPHARM, Inc., dated August 3, 2005 (incorporated by reference to Exhibit 10.1 to the Registrant’s Form 8-K, SEC File No. 000-32353, filed August 9, 2005).
3.1	Amended and Restated Certificate of Incorporation, and all amendments thereto (incorporated by reference to Exhibit 3.1 to the Registrant’s Annual Report on Form 10-Q, SEC File No. 001-33038, filed August 14, 2023).
3.2	Certificate of Merger dated September 13, 2005, relating to the merger of ZIO Acquisition Corp. with and into ZIOPHARM, Inc. (incorporated by reference to Exhibit 3.1 to the Registrant’s Form 8-K, SEC File No. 000-32353, filed September 19, 2005).
3.3	Certificate of Ownership of the Registrant (formerly “EasyWeb, Inc.”) dated as of September 14, 2005, relating the merger of ZIOPHARM, Inc. with and into the Registrant, and changing the Registrant’s corporate name from EasyWeb, Inc. to ZIOPHARM Oncology, Inc. (incorporated by reference to Exhibit 3.2 to the Registrant’s Form 8-K, SEC File No. 000-32353, filed September 19, 2005).
3.4	Amended and Restated Certificate of Designation, Preferences and Rights of Series 1 Preferred Stock, as filed with the Delaware Secretary of State on July 1, 2016 (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K/A, SEC File No. 001-33038, filed July 1, 2016).
3.5	Amended and Restated Bylaws of the Registrant, dated as of September 21, 2020 (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed September 22, 2020).
4.1	Specimen common stock certificate (incorporated by reference to Exhibit 4.1 to the Registrant’s Registration Statement on Form SB-2, SEC File No. 333-129020, filed October 14, 2005).
4.2	Form of Option for the Purchase of Shares of common stock dated August 30, 2004 and issued to The University of Texas M. D. Anderson Cancer Center (incorporated by reference to Exhibit 4.6 to the Registrant’s Annual Report on Form 10-KSB, SEC File No. 000-32353, filed March 20, 2006).
4.3	Schedule identifying Material Terms of Options for the Purchase of Shares of Common Stock (incorporated by reference to Exhibit 4.7 to the Registrant’s Annual Report on Form 10-KSB, SEC File No. 000-32353, filed March 20, 2006).
4.4	Form of Warrant to Purchase Common Stock (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038 filed November 13, 2018).
4.5#	Warrant to Purchase Common Stock issued to The University of Texas M. D. Anderson Cancer Center (incorporated by reference to Exhibit 4.7 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 2, 2020).
4.6	Form of Warrant to Purchase Shares of Common Stock issued to SVB and certain of its Affiliates, dated December 28, 2021 (incorporated by reference to Exhibit 4.6 to the Registrant's Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).
4.7	Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (incorporated by reference to Exhibit 4.7 to the Registrant's Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).
10.3+	ZIOPHARM Oncology, Inc. 2012 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038 filed September 24, 2018).

69

10.4+	Form of Restricted Stock Agreement Granted Under the ZIOPHARM Oncology, Inc. 2012 Equity Incentive Plan (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038 filed June 26, 2012).
10.5+	Form of Option Agreement Granted Under the ZIOPHARM Oncology, Inc. 2012 Equity Incentive Plan (incorporated by reference to Exhibit 10.3 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038 filed June 26, 2012).
10.7+	Form of Inducement Award Grant Notice and Inducement Award Grant Agreement (incorporated by reference to Exhibit 99.3 to the Registrant’s Registration Statement on Form S-8, SEC File No. 333-238090, filed May 8, 2020).
10.8+	ZIOPHARM Oncology, Inc. 2020 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038 filed July 1, 2020).
10.9+	Form of Restricted Stock Agreement Granted Under the ZIOPHARM Oncology, Inc. 2020 Equity Incentive Plan (incorporated by reference to Exhibit 10.9 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021 ).
10.10+	Form of Stock Option Agreement Granted Under the ZIOPHARM Oncology, Inc. 2020 Equity Incentive Plan (incorporated by reference to Exhibit 10.10 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021 ).
10.11+	Form of Indemnity Agreement for directors and executive officers (incorporated by reference to Exhibit 99.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed January 31, 2013).
10.16+	Employment Agreement, dated August 24, 2021, by and between the Registrant and Kevin S. Boyle Sr. (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed August 30, 2021).
10.23#	Form of Retention Bonus Agreement (incorporated by reference to Exhibit 10.20 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021).
10.24#	License Agreement by and among the Registrant, Intrexon Corporation and The University of Texas System Board of Regents on behalf of The University of Texas M.D. Anderson Cancer Center dated as of January 13, 2015 (incorporated by reference to Exhibit 10.5 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed January 28, 2015).
10.25†	Exclusive License Agreement by and between the Registrant, Precigen, Inc. and Intrexon Corporation, dated October 5, 2018 (incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed November 9, 2018).
10.26#	Amendment No. 1 to the Exclusive License Agreement by and between the Registrant and PGEN Therapeutics, Inc. (formerly known as Precigen, Inc.), dated October 15, 2020 (incorporated by reference to Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q SEC File No. 001-33038, filed November 5, 2020).
10.27	Amended and Restated Exclusive License Agreement, dated, April 3, 2023, by and between the Registrant and Precigen, Inc. (incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q SEC File No. 001-33038, filed May 10, 2023).
10.28†	License and Collaboration Agreement by and among the Registrant, Intrexon Corporation and Ares Trading S.A. dated as of March 27, 2015 (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed April 2, 2015).
10.29#	Research and Development Agreement by and among the Registrant, Intrexon Corporation and The University of Texas M.D. Anderson Cancer Center dated as of August 17, 2015 (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed August 21, 2015).
10.30	First Amendment to the Research and Development Agreement by and among the Registrant, Intrexon Corporation and The University of Texas M.D. Anderson Cancer Center dated as of August 30, 2016 (incorporated by reference to Exhibit 10.21 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 5, 2019).
10.31	Second Amendment to the Research and Development Agreement by and among the Registrant, Intrexon Corporation and The University of Texas M.D. Anderson Cancer Center dated as of January 17, 2017 (incorporated by reference to Exhibit 10.21 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 5, 2019).
10.32	Third Amendment to the Research and Development Agreement by and among the Registrant, Intrexon Corporation and The University of Texas M.D. Anderson Cancer Center dated as of November 14, 2017 (incorporated by reference to Exhibit 10.23 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 5, 2019).
10.33	Fourth Amendment to Research and Development Agreement, dated September 19, 2019 by and among the Registrant, The University of Texas MD Anderson Cancer Center and Precigen, Inc. (incorporated by reference to Exhibit 10.7 to the Registrant’s Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed November 7, 2019).
10.34#	Fifth Amendment to Research and Development Agreement, dated October 22, 2019 by and among the Registrant and The University of Texas MD Anderson Cancer Center (incorporated by reference to Exhibit 10.20 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 2, 2020).
10.35#	2019 Research and Development Agreement, dated October 22, 2019, by and between the Registrant and The University of Texas MD Anderson Cancer Center (incorporated by reference to Exhibit 10.21 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 2, 2020).
10.36#	Patent License Agreement, dated as of May 28, 2019, by and between the Registrant and the National Cancer Institute (incorporated by reference to Exhibit 10.3 to the Registrant’s Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed August 8, 2019).

70

10.37#	First Amendment to Patent License Agreement, dated as of January 8, 2020, by and between the Registrant and the National Cancer Institute (incorporated by reference to Exhibit 10.23 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 2, 2020).
10.38#	Second Amendment to Patent License Agreement, dated as of September 28, 2020, by and between the Registrant and the National Cancer Institute (incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q, SEC File No. 000-33038, filed November 5, 2020).
10.39#	Third Amendment to Patent License Agreement, dated as of April 16, 2021, by and between the Registrant and the National Cancer Institute (incorporated by reference to Exhibit 10.38 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).
10.40#	Fourth Amendment to Patent License Agreement, dated as of May 4, 2021, by and between the Registrant and the National Cancer Institute (incorporated by reference to Exhibit 10.39 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).
10.41#	Fifth Amendment to Patent License Agreement, dated as of August 13, 2021, by and between the Registrant and the National Cancer Institute (incorporated by reference to Exhibit 10.40 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).
10.42#	Cooperative Research and Development Agreement, dated January 9, 2017, by and among the Registrant, the National Cancer Institute, and Intrexon Corporation (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038, filed September 26, 2019).
10.43	First Amendment to the Cooperative Research and Development Agreement, dated March 23, 2018, by and among the Registrant, National Cancer Institute, Intrexon Corporation and Precigen, Inc. (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038, filed September 26, 2019).
10.44#	Second Amendment to the Cooperative Research and Development Agreement, dated February 1, 2019, by and among the National Cancer Institute, the Registrant and Precigen, Inc. (incorporated by reference to Exhibit 10.3 to the Registrant’s Current Report on Form 8-K SEC File No. 001-33038, filed September 26, 2019).
10.45	Third Amendment to the Cooperative Research and Development Agreement, dated March 15, 2022, by and among the National Cancer Institute and the Registrant (incorporated by reference to Exhibit 10.44 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).
10.46	Fourth Amendment to the Cooperative Research and Development Agreement, dated June 24, 2022, by and between the National Cancer Institute and the Registrant (incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed August 15, 2022).
10.47	Lease Agreement, dated as of October 15, 2019, by and between the Registrant and The University of Texas System Board of Regents on behalf of The University of Texas M.D. Anderson Cancer Center (incorporated by reference to Exhibit 10.39 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021).
10.48	First Amendment, dated as of April 7, 2020, to the Lease Agreement, dated as of October 15, 2019, by and between the Registrant and The University of Texas System Board of Regents on behalf of The University of Texas M.D. Anderson Cancer Center (incorporated by reference to Exhibit 10.40 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021).
10.49	Second Amendment, dated as of April 7, 2020, to the Lease Agreement, dated as of October 15, 2019, by and between the Registrant and The University of Texas System Board of Regents on behalf of The University of Texas M.D. Anderson Cancer Center (incorporated by reference to Exhibit 10.41 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021).
10.50	Third Amendment, dated as of December 15, 2020, to the Lease Agreement, dated as of October 15, 2019, by and between the Registrant and The University of Texas System Board of Regents on behalf of The University of Texas M.D. Anderson Cancer Center (incorporated by reference to Exhibit 10.42 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021).
10.51	Lease Agreement dated as of December 15, 2020, by and between the Registrant and The University of Texas System Board of Regents on behalf of The University of Texas M.D. Anderson Cancer Center (incorporated by reference to Exhibit 10.43 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 1, 2021).
10.52	Agreement dated February 4, 2021, by and among the Registrant, WaterMill Asset Management Corp. and Robert W. Postma (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed February 5, 2021).
10.53	Loan and Security Agreement by and among the Registrant, the lenders party thereto and Silicon Valley Bank, as administrative agent and collateral agent, dated August 6, 2021 (incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed November 8, 2021).
10.54	First Amendment to the Loan and Security Agreement by and among the Registrant, the lenders party thereto and Silicon Valley Bank, as administrative agent and collateral agent, dated December 28, 2021 (incorporated by reference to Exhibit 10.52 to the Registrant’s Annual Report on Form 10-K, SEC File No. 001-33038, filed March 30, 2022).

71

10.55	Equity Distribution Agreement, dated August 12, 2022, by and between Piper Sandler & Co. and the Registrant (incorporated by reference to Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed August 15, 2022).
10.56	Underwriting Agreement, dated as of November 29, 2022, by and between Cantor Fitzgerald & Co. and the Registrant (incorporated by reference to Exhibit 1.1 to the Registrant’s Current Report on Form 8-K, SEC File No. 001-33038, filed November 30, 2022).
10.57+	Retention Agreement, dated as of August 14, 2023, between the Registrant and Melinda Lackey (incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed November 14, 2023).
10.58+	Retention Agreement, dated as of August 14, 2023, between the Registrant and Drew Deniger (incorporated by reference to Exhibit 10.2 to the Registrant's Quarterly Report on Form 10-Q, SEC File No. 001-33038, filed November 14, 2023).
10.59+*	Consulting Agreement, dated as of November 14, 2023, between the Registrant and Melinda Lackey.
10.60+*	Separation Agreement, dated as of December 22, 2023, between the Registrant and Kevin S. Boyle, Sr.
10.61+*	Consulting Agreement, dated as of December 22, 2023, between the Registrant and Kevin S. Boyle, Sr.
10.62+*	Consulting Agreement, dated as of February 21, 2024, between the Registrant and Ferdinand Groenewald.
23.1*	Consent of Independent Registered Public Accounting Firm.
31.1*	Certification of Principal Executive Officer and Principal Financial Officer pursuant to Exchange Act Rule 13a-14(a) or 15(d)-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**	Certification of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
97.1*	Alaunos Therapeutics, Inc. Clawback Policy.
101.INS*	Inline XBRL Instance Document
101.SCH*	Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents
104*	Cover Page Interactive Data File-the cover page interactive data is embedded within the Inline XBRL document or included within the Exhibit 101 attachments
*	Filed herewith.
**	Furnished herewith.
+	Indicates management contract or compensatory plan.
†	Confidential treatment has been granted by the Securities and Exchange Commission as to certain portions of this document.
#	Portions of this document (indicated by “[***]”) have been omitted because such information is not material and is the type of information that the Registrant treats as private or confidential.

Item 16. Form 10-K Summary

None.

72

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ALAUNOS THERAPEUTICS, INC.
Date: April 1, 2024	By:	/s/ Dale Curtis Hogue, Jr.
		Dale Curtis Hogue, Jr.
		Interim Chief Executive Officer and Director
		(Principal Executive Officer and Principal Financial Officer)
Date: April 1, 2024	By:	/s/ Ferdinand Groenewald
		Ferdinand Groenewald
		Vice President, Finance
		(Principal Accounting Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Dale Curtis Hogue, Jr.
Dale Curtis Hogue, Jr.	Interim Chief Executive Officer and Director (Principal Executive Officer and Principal Financial Officer)	April 1, 2024
/s/ Ferdinand Groenewald
Ferdinand Groenewald	Vice President, Finance (Principal Accounting Officer)	April 1, 2024
/s/ Robert Hofmeister
Robert Hofmeister	Director	April 1, 2024
/s/ Robert W. Postma
Robert W. Postma	Director	April 1, 2024
/s/ Jaime Vieser
Jaime Vieser	Director	April 1, 2024
/s/ Holger Weis
Holger Weis	Director	April 1, 2024

73

Alaunos Therapeutics, Inc.

INDEX TO FINANCIAL STATEMENTS

	Page
Report of Independent Registered Public Accounting Firm (RSM US LLP; Boston, MA; PCAOB ID: 49)		F-1
Balance Sheets as of December 31, 2023 and 2022		F-3
Statements of Operations for the Years Ended December 31, 2023 and 2022		F-4
Statements of Changes in Stockholders’ Equity for the Years Ended December 31, 2023 and 2022		F-5
Statements of Cash Flows for the Years Ended December 31, 2023 and 2022		F-6
Notes to Financial Statements		F-7

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Alaunos Therapeutics, Inc. (the Company) as of December 31, 2023 and 2022, the related statements of operations, stockholders' equity and cash flows for the years then ended, and the related notes to the financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

The Company’s Ability to Continue as a Going Concern

The accompanying financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 1 to the financial statements, the Company has suffered recurring losses from operations since inception and will be required to raise additional capital to fund operations. This raises substantial doubt about the Company's ability to continue as a going concern. Management's plans in regard to these matters also are described in Note 1. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.

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 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 Matters

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of this critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Accruals for Clinical Trials and Other Research and Development Expenses

As discussed in Note 3 to the financial statements, the Company accrues costs for clinical trials and other research and development expenses based on estimates of costs incurred through the balance sheet date that have not been invoiced by the clinical research organizations, clinical study sites, consultants, or other vendors. This process involves reviewing open contracts and purchase orders, communicating with vendors and internal personnel to identify services that have been performed, and estimating the level of service performed and the associated costs incurred for the services when the Company has not yet been invoiced or otherwise notified of the actual costs. The Company's accrual for clinical trial expenses totaled $0.6 million at December 31, 2023, as disclosed in Note 6.

We identified the accruals for clinical trials and other research and development expenses to be a critical audit matter because auditing the Company’s accruals is complex as the information necessary to make an estimate is accumulated from multiple sources and there may be delays in invoicing from clinical study sites and other vendors, or payments may depend on factors such as the completion of clinical trial milestones. Additionally, in certain circumstances, it requires judgment, as the timing and pattern of vendor invoicing may not correspond to the level of services provided.

How We Addressed the Matter in our Audit

Our audit procedures to test the accruals for clinical trials and preclinical studies expenses included, among others:

•We tested the accuracy and completeness of the underlying data used in the estimates and evaluated the reasonableness of assumptions used by management.

•We inspected certain contracts with third parties and related information received by the Company to test proper recording of costs incurred to date.

•We corroborated the progress of research and development activities through confirmations with certain third parties.

F-1

•We performed analytical procedures over fluctuations in accrued expenses by department level throughout the year.

•We tested subsequent invoices received from third parties and cash disbursements to assess completeness of recorded accruals.

/s/ RSM US LLP

We have served as the Company's auditor since 2010.

Boston, Massachusetts

April 1, 2024

F-2

Alaunos Therapeutics, Inc.

BALANCE SHEETS

(in thousands, except share and per share data)

	December 31,			December 31,
	2023			2022
ASSETS:
Current assets:
Cash and cash equivalents	$	6,062		$	39,058
Restricted cash		—			13,938
Receivables		1			4
Prepaid expenses and other current assets		2,198			799
Total current assets		8,261			53,799
Property and equipment, net		2			8,460
Right-of-use assets		—			2,136
Deposits		—			42
Other non-current assets		—			500
Total assets	$	8,263		$	64,937
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	616		$	1,389
Current portion of long-term debt		—			16,765
Accrued expenses		1,340			5,454
Lease liabilities, current		—			558
Total current liabilities		1,956			24,166
Lease liabilities, non-current		—			2,188
Other non-current liabilities		—			28
Total liabilities	$	1,956		$	26,382
Commitments and contingencies (Note 9)
Stockholders' equity
Common stock $0.001 par value; 34,666,667 shares authorized, 16,012,522 shares issued and outstanding at December 31, 2023 and 28,000,000 shares authorized, 16,027,384 shares issued and outstanding at December 31, 2022		16			16
Additional paid-in capital		922,058			919,166
Accumulated deficit		(915,767	)		(880,627	)
Total stockholders' equity		6,307			38,555
Total liabilities and stockholders' equity	$	8,263		$	64,937

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

F-3

Alaunos Therapeutics, Inc.

STATEMENTS OF OPERATIONS

(in thousands, except share and per share data)

	For the Year Ended December 31,
	2023			2022
Collaboration revenue	$	5		$	2,922
Operating expenses:
Research and development		16,279			25,018
General and administrative		12,219			13,142
Gain on lease modification and termination		(298	)		(133	)
Restructuring costs		1,269			—
Property and equipment and right-of-use assets impairment		4,803			—
Total operating expenses		34,272			38,027
Loss from operations		(34,267	)		(35,105	)
Other income (expense):
Interest expense		(1,921	)		(3,154	)
Other income, net		1,048			529
Other income (expense), net		(873	)		(2,625	)
Net loss	$	(35,140	)	$	(37,730	)
Basic and diluted net loss per share	$	(2.20	)	$	(2.61	)
Weighted average common shares outstanding, basic and diluted		15,995,323			14,475,354

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

F-4

Alaunos Therapeutics, Inc.

STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(in thousands, except share and per share data)

	Common Stock					Additional Paid in Capital		Accumulated Deficit			Total Stockholders' Equity
	Shares			Amount
Balance at December 31, 2021		14,408,496		$	14	$	900,895	$	(842,852	)	$	58,057
Stock-based compensation		—			—		3,528		—			3,528
Restricted stock awards		18,667			—		—		—			—
Cancelled restricted common stock		(15,527	)		—		—		—			—
Exercise of employee stock options		1,750			—		21		—			21
Repurchase of common stock		(1,250	)		—		—		(45	)		(45	)
Issuance of common stock, net of expenses		1,615,248			2		14,722		—			14,724
Net loss		—			—		—		(37,730	)		(37,730	)
Balance at December 31, 2022		16,027,384		$	16	$	919,166	$	(880,627	)	$	38,555
Stock-based compensation		—			—		2,800		—			2,800
Issuance of common stock, net of expenses		14,420			—		92		—			92
Cancelled restricted common stock		(29,282	)		—		—		—			—
Net loss		—			—		—		(35,140	)		(35,140	)
Balance at December 31, 2023		16,012,522		$	16	$	922,058	$	(915,767	)	$	6,307

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

F-5

Alaunos Therapeutics, Inc.

STATEMENTS OF CASH FLOWS

(in thousands)

	For the Year Ended December 31,
	2023			2022
Cash flows from operating activities:
Net loss	$	(35,140	)	$	(37,730	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation		2,315			2,759
Property and equipment and right-of-use assets impairment		4,803			—
Amortization of financing costs		1,339			981
Stock-based compensation		2,800			3,528
Decrease in the carrying amount of right-of-use assets		286			486
Gain on lease modification and termination		(298	)		(133	)
Loss on sale of equipment, net		7			7
(Increase) decrease in:
Receivables		3			1,107
Prepaid expenses and other current assets		(1,399	)		867
Deposits		42			—
Other non-current assets		500			131
Increase (decrease) in:
Accounts payable		(773	)		(25	)
Accrued expenses		(3,989	)		(668	)
Lease liabilities		(610	)		(570	)
Other non-current liabilities		(28	)		28
Net cash used in operating activities		(30,142	)		(29,232	)
Cash flows from investing activities:
Purchases of property and equipment		(197	)		(216	)
Proceeds from the disposal of property and equipment		1,543			23
Net cash provided by (used in) investing activities		1,346			(193	)
Cash flows from financing activities:
Proceeds from the issuance of common stock		92			14,724
Proceeds from the exercise of stock options		—			21
Repurchase of common stock		—			(45	)
Repayment of long-term debt		(18,105	)		(8,333	)
Debt extinguishment costs		(125	)		—
Net cash provided by (used in) financing activities		(18,138	)		6,367
Net decrease in cash, cash equivalents and restricted cash		(46,934	)		(23,058	)
Cash, cash equivalents and restricted cash, beginning of period		52,996			76,054
Cash and cash equivalents, end of period	$	6,062		$	52,996
Supplementary disclosure of cash flow information:
Cash paid for interest	$	2,063		$	2,171
Reduction in right-of-use assets for modification and termination	$	1,839		$	1,790
Amounts included in accrued expenses and accounts payable related to property and equipment	$	—		$	91

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

F-6

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

1.Organization

Alaunos Therapeutics, Inc., which is referred to herein as “Alaunos,” or the “Company,” is a clinical-stage oncology-focused cell therapy company that was historically involved in the development of adoptive TCR therapies, designed to treat multiple solid tumor types in large cancer patient populations with unmet clinical needs. On January 25, 2022, the Company changed its corporate name from ZIOPHARM Oncology, Inc. to Alaunos Therapeutics, Inc. The Company was working to leverage its proprietary, non-viral Sleeping Beauty gene transfer platform and its novel cancer mutation hotspot TCR library to design and manufacture personalized cell therapies that target neoantigens arising from common tumor-related mutations in key oncogenic genes, including KRAS, TP53 and EGFR.

The Company’s operations to date have consisted primarily of conducting research and development and raising capital to fund those efforts.

As of December 31, 2023, there were 16,012,522 shares of common stock outstanding and an additional 1,918,297 shares of common stock reserved for issuance pursuant to outstanding stock options and warrants.

On August 14, 2023, the Company announced a strategic reprioritization of its business and wind down of its TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, the Company has significantly reduced its workforce and continues working to reduce costs in order to extend its cash runway. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. The Company has engaged Cantor Fitzgerald & Co., or Cantor, to act as strategic advisor for this process.

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities and commitments in the normal course of business. The Company follows the guidance of Accounting Standards Codification, or ASC, Topic 205-40, Presentation of Financial Statements - Going Concern, in order to determine whether there is substantial doubt about its ability to continue as a going concern for one year after the date its financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of management's plans that have not been fully implemented as of the date the financial statements are issued. When substantial doubt exists, management evaluates whether the mitigating effect of its plans sufficiently alleviates the substantial doubt about the Company's ability to continue as a going concern. The mitigating effect of management's plans, however, is only considered if both (i) it is probable that the plans will be effectively implemented within one year after the date that the financial statements are issued and (ii) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about the entity's ability to continue as a going concern within one year after the date that the financial statements are issued.

The Company has operated at a loss since its inception in 2003 and has no recurring revenue from operations. The Company anticipates that losses will continue for the foreseeable future. As of December 31, 2023, the Company had approximately $6.1 million of cash and cash equivalents. The Company’s accumulated deficit at December 31, 2023 was approximately $915.8 million. Given its current development plans and cash management efforts, the Company anticipates cash resources will be sufficient to fund operations into the third quarter of 2024. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. The Company’s ability to continue operations after its current cash resources are exhausted depends on future events, including its ability to obtain additional financing or to achieve profitable operations, as to which no assurances can be given, nor are within the Company's control. If adequate additional funds are not available when required, or if the Company is unsuccessful in entering into partnership agreements for further development of its product candidates, management may need to curtail its development efforts and planned operations to conserve cash until sufficient additional capital is raised. There can be no assurances that such a plan would be successful.

Based on the current cash forecast and the Company's dependence on its ability to obtain additional financing to fund its operations after the current resources are exhausted, about which there can be no certainty, management has determined that the Company's present capital resources will not be sufficient to fund its planned operations for at least one year from the issuance date of the financial statements, and substantial doubt as to the Company's ability to continue as a going concern exists. This forecast of cash resources is forward-looking information that involves risks and uncertainties, and the actual amount of expenses could vary materially and adversely as a result of a number of factors.

The Company has elected to make a reclassification in the presentation of the cash flow to show non-cash changes in right-of-use assets and lease liabilities related to modifications and terminations as non-cash for the year ended December 31, 2022 in order to conform presentation to the December 31, 2023 disclosures.

F-7

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

2.Financings

2021 Loan and Security Agreement

On August 6, 2021, the Company entered into a Loan and Security Agreement, or the Loan and Security Agreement, with Silicon Valley Bank and affiliates of Silicon Valley Bank, or collectively, SVB. The Loan and Security Agreement provided for an initial term loan of $25.0 million funded at the closing, or the Term A Tranche, with an additional tranche of $25.0 million available if certain funding and clinical milestones were met by August 31, 2022, or the Term B Tranche.

Effective December 28, 2021, the Company, entered into an amendment to the Loan and Security Agreement, or the First Amendment. The First Amendment extended the interest-only period through August 31, 2022. The First Amendment also eliminated the Term B Tranche, which remained unfunded, leaving only the Term A Tranche, or the SVB Facility. Under the amended Loan and Security Agreement, the SVB Facility was to mature on August 1, 2023. On May 1, 2023, the Company repaid its outstanding debt obligations under the amended Loan and Security Agreement in their entirety.

Refer to Note 4, Debt, for further discussion of the Loan and Security Agreement and the First Amendment.

2022 Equity Distribution Agreement

On August 12, 2022, the Company entered into an Equity Distribution Agreement, or the Equity Distribution Agreement, with Piper Sandler & Co., or Piper Sandler, pursuant to which the Company can offer and sell, from time to time at its sole discretion, shares of its common stock having an aggregate offering price of up to $50.0 million through Piper Sandler as its sales agent in an "at the market offering." Piper Sandler will receive a commission of 3.0% of the gross proceeds of any common stock sold under the Equity Distribution Agreement. During the years ended December 31, 2023 and 2022, there have been no sales of the Company's common stock under the Equity Distribution Agreement.

2022 Public Offering

On November 29, 2022, the Company entered into an underwriting agreement, or the Underwriting Agreement, with Cantor Fitzgerald & Co., or the Underwriter, as the sole underwriter, relating to the issuance and sale in an underwritten offering, or the Offering, of 1,615,248 shares, or the Firm Shares, of the Company’s common stock to the Underwriter at a price of $9.2865 per share.

The net proceeds to the Company from the Offering were $14.7 million (before accounting for the partial exercise of the Underwriter's option as described below) after deducting underwriting discounts and commissions and offering expenses payable by the Company.

Under the terms of the Underwriting Agreement, the Company granted the Underwriter an option, exercisable for 30 days, to purchase up to an additional 242,287 shares of common stock, which we refer to, together with the Firm Shares, as the Shares, at the same price per share as the Firm Shares. On January 5, 2023, the Underwriter partially exercised its option to purchase 14,420 shares of common stock.

3.Summary of Significant Accounting Policies

Basis of Presentation

The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, or U.S. GAAP.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management 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 financial statements and the reported amounts of revenue and expenses during the reporting period. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they become known.

The Company’s most significant estimates and judgments used in the preparation of the financial statements are:

•Clinical trial expenses and other research and development expenses;

•Collaboration agreements;

•Fair value measurements of stock-based compensation; and

F-8

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

•Income taxes.

Cash and Cash Equivalents

Cash equivalents consist primarily of demand deposit accounts, certificates of deposit and deposits in short-term U.S. treasury money market mutual funds. Cash equivalents are stated at cost, which approximates fair market value.

Concentrations of Credit Risk

Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents. The Company maintains cash accounts in commercial banks, which may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. The Company believes it is not exposed to any significant credit risk on cash and cash equivalents.

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation and amortization. Expenditures for maintenance and repairs are charged to expense while the costs of significant improvements are capitalized. Depreciation and amortization is calculated on a straight-line basis using the following periods, which represent the estimated useful lives of the assets:

Office and computer equipment	3 years
Software	3 years
Laboratory equipment	5 years
Leasehold improvements	Life of the lease

Costs, including certain design, construction and installation costs related to assets that are under construction and are in the process of being readied for their intended use, are recorded as construction in progress and are not depreciated until such time as the subject asset is placed in service. Repairs and maintenance that do not extend the useful life of the asset are expensed as incurred. Upon sale, retirement or other disposition of these assets, the costs and related accumulated depreciation are removed from the respective accounts and any gain or loss on the disposition is included in the statements of operations.

Long-Lived Assets

Assessments of long-lived assets and the remaining useful lives of such long-lived assets are reviewed for impairment whenever a triggering event occurs or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. An asset, or group of assets, is considered to be impaired when the undiscounted estimated net cash flows expected to be generated by the asset, or group of assets, are less than its carrying amount. The impairment recognized is the amount by which the carrying amount exceeds the fair market value of the impaired asset, or group of assets, based on the present value of the expected future cash flows associated with the use of the asset.

Operating Segments

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the Company’s chief operating decision maker, in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business in one operating segment.

Warrants

The Company assesses whether warrants issued require accounting as derivatives. The Company determined that the warrants were (1) indexed to the Company’s own stock and (2) classified in stockholders’ equity in accordance with Financial Accounting Standards Board, or FASB, ASC Topic 815, Derivatives and Hedging. As such, the Company has concluded the warrants meet the scope exception for determining whether the instruments require accounting as derivatives and should be classified in stockholders’ equity.

Fair Value Measurements

The Company has certain financial assets and liabilities recorded at fair value which have been classified as Level 1, 2 or 3 within the fair value hierarchy as described in the accounting standards for fair value measurements.

•Level 1—Quoted prices in active markets for identical assets or liabilities.

F-9

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

•Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•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.

Assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2023 and 2022 are as follows:

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2023		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	5,744	$	5,744	$	—	$	—

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2022		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	38,058	$	38,058	$	—	$	—

The cash equivalents represent demand deposit accounts and deposits in a short-term United States treasury money market mutual fund quoted in an active market and classified as a Level 1 asset. There have been no changes to the valuation methods during the years ended December 31, 2023 and 2022. The Company had no financial assets or liabilities that were classified as Level 2 or Level 3 during the years ended December 31, 2023 and 2022.

Fair value of non-financial instruments

The Company evaluates assets for impairment whenever events or changes in circumstances indicate that indicators of impairment exist. In those evaluations, the Company compares estimated future undiscounted cash flows generated by each asset (or asset group) to the carrying value of the asset (or asset group) to determine if an impairment charge is required. If the undiscounted cash flows test fails, the Company estimates the fair value of the asset (or asset group) to determine the impairment.

Following the Company’s announced strategic reprioritization on August 14, 2023, the Company determined that changes in the intended use of certain property and equipment represented an indicator of impairment, resulting in an impairment charge of $4.8 million, which was primarily related to leasehold improvements of $3.8 million and lab equipment of $1.0 million.

In addition, the Company determined certain prepaid expense balances to be impaired given the Company’s strategic reprioritization, and therefore, has recorded an impairment charge of $0.2 million related to prepaid expenses and other current assets, which is recorded in research and development expenses within the statement of operations.

On November 9, 2023, the Company executed an agreement to sell laboratory equipment for gross proceeds of $1.5 million and recognized a gain on disposal of equipment of $3 thousand, which is recorded in other income in the statement of operations.

Revenue Recognition from Collaboration Agreements

Revenue for the year ended December 31, 2023 consisted of $5 thousand and for the year ended December 31, 2022 consisted of $2.9 million. For the years ended December 31, 2023 and 2022, the Company recognized revenue through its Collaboration Agreement with Solasia Pharma K.K. primarily due to the achievement of milestones, as further described in Note 9, Commitments and Contingencies.

The Company primarily generates revenue through collaboration arrangements with strategic partners for the development and commercialization of product candidates. The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers, or ASC 606. The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods and/or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that the Company determines are within the

F-10

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

scope of ASC 606, the Company performs the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) each performance obligation is satisfied.

The Company recognizes collaboration revenue under certain of the Company’s license or collaboration agreements that are within the scope of ASC 606. The Company’s contracts with customers typically include promises related to licenses to intellectual property, research and development services and options to purchase additional goods and/or services. If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees.

Contracts that include an option to acquire additional goods and/or services are evaluated to determine if such option provides a material right to the customer that it would not have received without entering into the contract. If so, the option is accounted for as a separate performance obligation. If not, the option is considered a marketing offer which would be accounted for as a separate contract upon the customer’s election.

The terms of the Company’s arrangements with customers typically include the payment of one or more of the following:(i) non-refundable, up-front payment, (ii) development, regulatory and commercial milestone payments, (iii) future options and (iv) royalties on net sales of licensed products. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. The Company measures the transaction price based on the amount of consideration to which it expects to be entitled in exchange for transferring the promised goods and/or services to the customer. The Company utilizes the most likely amount method to estimate the amount of variable consideration, to predict the amount of consideration to which it will be entitled. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. At the inception of each arrangement that includes development and regulatory milestone payments, the Company evaluates whether the associated event is considered probable of achievement and estimates the amount to be included in the transaction price using the most likely amount method. Milestone payments that are not within the control of the Company or the licensee, such as those dependent upon receipt of regulatory approval, are not considered to be probable of achievement until the triggering event occurs. At the end of each reporting period, the Company reevaluates the probability of achievement of each milestone and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment. For arrangements that include sales-based royalties, including milestone payments based upon the achievement of a certain level of product sales, the Company recognizes revenue upon the later of: (i) when the related sales occur or (ii) when the performance obligation to which some or all of the payment has been allocated has been satisfied (or partially satisfied). Consideration that would be received for optional goods and/or services is excluded from the transaction price at contract inception.

The Company allocates the transaction price to each performance obligation identified in the contract on a relative standalone selling price basis. However, certain components of variable consideration are allocated specifically to one or more particular performance obligations in a contract to the extent both of the following criteria are met: (i) the terms of the payment relate specifically to the efforts to satisfy the performance obligation or transfer the distinct good or service and (ii) allocating the variable amount of consideration entirely to the performance obligation or the distinct good or service is consistent with the allocation objective of the standard whereby the amount allocated depicts the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services. The Company develops assumptions that require the use of judgment to determine the standalone selling price for each performance obligation identified in each contract. The key assumptions utilized in determining the standalone selling price for each performance obligation may include forecasted revenue, development timelines, estimated research and development costs, discount rates, likelihood of exercise and probabilities of technical and regulatory success.

Revenue is recognized based on the amount of the transaction price that is allocated to each respective performance obligation when or as the performance obligation is satisfied by transferring a promised good and/or service to the customer. For performance obligations that are satisfied over time, the Company recognizes revenue by measuring the progress toward complete satisfaction of the performance obligation using a single method of measuring progress which depicts the performance in transferring control of the associated goods and/or services to the customer. The Company uses input methods to measure the progress toward the complete satisfaction of performance obligations satisfied over time. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment.

F-11

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

Research and Development Costs

As part of the process of preparing the Company's financial statements, the Company is required to estimate its accrued research and development expenses. This process involves reviewing open contracts and purchase orders, communicating with its personnel and third-party vendors to identify services that have been performed on its behalf and estimating the level of service performed and the associated costs incurred for the services when the Company has not yet been invoiced or otherwise notified of the actual costs. The majority of the Company's service providers invoice the Company in arrears for services performed, on a predetermined schedule or when contractual milestones are met; however, a few require advanced payments. The Company makes estimates of its accrued expenses as of each balance sheet date in its financial statements based on facts and circumstances known to it at that time. Examples of estimated accrued research and development expenses include fees paid to:

•clinical research organizations, or CROs, in connection with performing research services on its behalf and clinical trials;

•investigative sites or other providers in connection with clinical trials;

•vendors in connection with preclinical and clinical development activities; and

•vendors related to product manufacturing, development, and distribution of preclinical and clinical supplies.

The Company bases its expenses related to preclinical studies and clinical trials on its estimates of the services received and efforts expended pursuant to quotes and contracts with CROs that conduct and manage clinical trials on its behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to the Company's vendors will exceed the level of services provided and result in a prepayment of the clinical expense. Payments under some of these contracts depend on factors such as the completion of clinical trial milestones. In accruing service fees, the Company estimates the time period over which services will be performed, enrollment of patients, number of sites activated and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from its estimate, the Company adjusts the accrual or amount of prepaid expense accordingly. Although the Company does not expect its estimates to be materially different from amounts actually incurred, its understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in it reporting amounts that are too high or too low in any particular period.

Income Taxes

Income taxes are accounted for under the liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be recovered or settled. The Company evaluates the realizability of its deferred tax assets and establishes a valuation allowance when it is more likely than not that all or a portion of deferred tax assets will not be realized.

The Company accounts for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors including, but not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. The Company evaluates this tax position on an annual basis. The Company also accrues for potential interest and penalties related to unrecognized tax benefits in income tax expense (Refer to Note 12, Income Taxes).

Accounting for Stock-Based Compensation

Stock-based compensation cost is measured at the grant date based on the estimated fair value of the award and is recognized as expense over the employee’s requisite service period. Stock-based compensation expense is based on the number of awards ultimately expected to vest and is reduced for forfeitures as they occur. Consistent with prior years, the Company uses the Black-Scholes option pricing model, which requires estimates of the expected term option holders will retain their options before exercising them and the estimated volatility of the Company’s common stock price over the expected term.

The Company recognized the full impact of its share-based employee payment plans in the statements of operations for each of the years ended December 31, 2023 and 2022 and did not capitalize any such costs on the balance sheets. The Company recognized $2.5 million of compensation expense related to stock options for the year ended December 31, 2023 and $3.0 million of compensation expense related to stock options for the year ended December 31, 2022. The Company recognized $0.3 million of compensation expense related to restricted stock for the year ended December 31, 2023 and $0.5 million for the year ended December 31, 2022 (refer to Note 13, Stock Option Plan). The total compensation expense relating to vesting of stock options and restricted stock awards for the year ended December 31, 2023 was $2.8 million

F-12

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

and $3.5 million for the year ended December 31, 2022. The following table presents share-based compensation expense included in the Company’s statements of operations:

	Year Ended December 31,
(in thousands)	2023		2022
Research and development		439		868
General and administrative		2,361		2,660
Stock-based compensation expense	$	2,800	$	3,528

The fair value of each stock option is estimated at the date of grant using the Black-Scholes option pricing model. The estimated weighted-average fair value of stock options granted to employees in the year ended December 31, 2023 was approximately $5.58 per share and was approximately $11.54 per share for the year ended December 31, 2022. Assumptions regarding volatility, expected term, dividend yield and risk-free interest rate are required for the Black-Scholes model. The volatility assumption is based on the Company’s historical experience. The risk-free interest rate is based on a U.S. treasury note with a maturity similar to the option award’s expected life. The expected life represents the average period of time that options granted are expected to be outstanding. The Company calculated expected term using the simplified method described in SEC Staff Accounting Bulletin, or SAB, No. 107 and No. 110 as it continues to meet the requirements promulgated in SAB No. 110. The assumptions for volatility, expected life, dividend yield and risk-free interest rate are presented in the table below:

	Year Ended December 31,
	2023	2022
Risk-free interest rate	3.51 – 4.01%	1.63 – 4.21%
Expected life in years	5.06 – 6.25	5.27 – 6.25
Expected volatility	89.69 – 112.12%	74.49 – 88.75%
Expected dividend yield	—%	—%

Reverse Stock Split

On January 31, 2024, the Company filed a Second Amended and Restated Certificate of Incorporation (the “Charter Amendment”) with the Secretary of State of the State of Delaware in order to effect a reverse stock split of the Company’s common stock at a ratio of 1-for-15 (the “Reverse Split”). The Charter Amendment decreased the number of authorized shares of common stock from 520,000,000 to 34,666,667. The Charter Amendment does not affect the par value of the Company’s common stock or change the number of authorized shares or par value of the Company’s preferred stock. The Charter Amendment became effective on January 31, 2024 at 5:00 p.m. Eastern Time, at which time every 15 shares of the Company’s issued and outstanding common stock automatically combined and converted into 1 share of common stock.

No fractional shares were issued in connection with the Reverse Split. Stockholders of record who would otherwise have been entitled to receive fractional shares as a result of the Reverse Split received a cash payment in lieu thereof at a price equal to the fraction to which the stockholder would otherwise be entitled multiplied by the closing sales price per share of the common stock (as adjusted for the Reverse Split) on The Nasdaq Capital Market on January 31, 2024.

All share and per share amounts of common stock, options, warrants, and restricted stock in the accompanying financial statements and notes thereto have been retroactively adjusted for all periods presented to reflect the Reverse Split as if it had occurred at the beginning of the earliest period presented.

Net Loss per Share

Basic net loss per common share is computed by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per share is computed using the weighted-average number of shares of common stock outstanding during the period, plus the dilutive effect of outstanding options and warrants, using the treasury stock method and the average market price of the Company’s common stock during the applicable period, unless their effect on net loss per share is antidilutive. The effect of computing diluted net loss per common share was antidilutive for any potentially issuable shares of common stock from the conversion of stock options, unvested restricted stock and warrants and, as such, have been excluded from the calculation.

F-13

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

The computation of basic and diluted net loss per share consists of the following:

	Year Ended December 31,
	2023			2022
Net loss	$	(35,140	)	$	(37,730	)
Weighted-average common shares outstanding, basic and diluted		15,995,323			14,475,354
Net loss per share, basic and diluted	$	(2.20	)	$	(2.61	)

Certain shares related to some of the Company’s outstanding common stock options, unvested restricted stock and warrants have not been included in the computation of diluted net loss per share for the years ended December 31, 2023 and 2022 as the result would be antidilutive. Such potential common shares on December 31, 2023 and 2022 consist of the following:

	December 31,
	2023		2022
Common stock options		465,898		693,909
Unvested restricted stock		-		62,604
Warrants		1,452,399		1,528,156
		1,918,297		2,284,669

New Accounting Pronouncements

In June 2016, the FASB issued Accounting Standards Update, or ASU, 2016-13, Financial Instruments: Credit Losses (Topic 326) as clarified in ASU 2019-04, ASU 2019-05 and ASU 2020-02. The objective of this standard is to provide information about expected credit losses on financial instruments at each reporting date and to change how other-than-temporary impairments on investment securities are recorded. The Company adopted ASU 2016-13 effective January 1, 2023, with no material impact upon adoption.

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which enhances the disclosures required for operating segments in the Company's annual and interim financial statements. ASU 2023-07 is effective retrospectively for fiscal years beginning after December 15, 2023 and for interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU 2023-09 provide for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. ASU 2023-09 is effective for the Company prospectively to all annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard.

4. Debt

There were no debt obligations outstanding at December 31, 2023. The carrying values of the Company's debt obligation at December 31, 2022 were as follows:

	December 31,
($ in thousands)	2022
Loan and Security Agreement	$	17,395
Unamortized discount on Loan and Security Agreement		(630	)
Total debt		16,765
Less: long-term debt, current		(16,765	)
Long-term debt	$	—

On August 6, 2021, the Company entered into the Loan and Security Agreement with SVB. The Loan and Security Agreement provided for the funding of the Term A Tranche at the closing, with the Term B Tranche available if certain funding and clinical milestones were met by August 31, 2022. The SVB Facility and related obligations under the Loan and Security Agreement were secured by substantially all of the Company's

F-14

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

properties, rights and assets, except for its intellectual property (which was subject to a negative pledge under the Loan and Security Agreement). In addition, the Loan and Security Agreement contained customary representations, warranties, events of default and covenants.

On December 28, 2021, the Company entered into the First Amendment to the Loan and Security Agreement. The First Amendment eliminated the unfunded Term B Tranche, among other things. The SVB Facility bore interest at a floating rate per annum on outstanding loans, payable monthly, at the greater of (a) 7.75% and (b) the current published U.S. prime rate, plus a margin of 4.5%.

All outstanding obligations under the amended Loan and Security Agreement were due and payable on August 1, 2023. In connection with the payment of all of the Company's outstanding obligations, the Company also owed SVB 5.75% of the original principal amounts borrowed as a final payment, or the Final Payment. Effective March 30, 2023, the Company entered into a Third Amendment to the Loan and Security Agreement, or the Third Amendment. Under the terms of the Third Amendment, the Company was no longer required to maintain all of its operating accounts, depository accounts and excess cash with SVB or one of its affiliates, and was instead only required to maintain a single operating or depository account at Silicon Valley Bank. The Third Amendment also modified the cash collateralization requirement, such that the Company was required to cash collateralize the entire sum of the outstanding principal amount of the SVB Facility, plus an amount equal to the Final Payment, which amount was to be reduced commensurate with each regularly scheduled monthly payment of principal and interest on the SVB Facility.

On May 1, 2023, the Company paid SVB an amount equal to the entire outstanding principal amount under the SVB Facility, all accrued and unpaid interest and the Final Payment. In accordance with the First Amendment, the payment was subject to a prepayment premium of 2.00%. During the year ended December 31, 2023, the Company recorded the remaining amounts associated with the Final Payment of $0.5 million and the prepayment premium of $0.1 million as interest expense within the statement of operations.

In connection with its entry into the Loan and Security Agreement in August 2021, the Company issued to SVB warrants to purchase (i) up to 28,856 shares of the Company’s common stock, in the aggregate, and (ii) up to an additional 28,856 shares of common stock, in the aggregate, in the event the Company achieved certain clinical milestones, in each case at an exercise price per share of $33.30.

In connection with its entry into the First Amendment in December 2021, the Company amended and restated the warrants issued to SVB. As amended and restated, the warrants are for up to 43,308 shares of the Company's common stock, in the aggregate, with an exercise price of $17.40 per share, or the SVB Warrants. The SVB Warrants expire on August 6, 2031.

The issuance costs for the Loan and Security Agreement, including the First Amendment, were approximately $1.2 million and primarily related to the SVB Warrants, which were amortized into interest expense over the term of the loan. Interest expense, including the amortization of issuance costs, was $1.9 million for the year ended December 31, 2023 and $3.2 million for the year ended December 31, 2022.

5.Property and Equipment, net

Property and equipment, net, consists of the following:

	December 31,
($ in thousands)	2023			2022
Office and computer equipment	$	15		$	2,183
Software		-			1,291
Leasehold improvements		-			9,561
Laboratory equipment		-			5,232
		15			18,267
Less: accumulated depreciation		(13	)		(9,807	)
Property and equipment, net	$	2		$	8,460

Depreciation expense for the year ended December 31, 2023 was $2.3 million and was $2.8 million for the year ended December 31, 2022. During the year ended December 31, 2023, the Company impaired property and equipment by $4.8 million. Refer to Note 3, Summary of Significant Accounting Policies, for further details.

F-15

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

6.Accrued Expenses

Accrued expenses consist of the following:

($ in thousands)	2023		2022
Clinical	$	568	$	2,200
Employee compensation		43		1,160
Professional services		717		534
Preclinical services		-		198
Manufacturing services		12		1,177
Other consulting services		-		16
Other		-		169
	$	1,340	$	5,454

7.Related Party Transactions

Joint Venture with TriArm Therapeutics/Eden BioCell

On December 18, 2018, the Company and TriArm Therapeutics, Ltd., or TriArm, launched Eden BioCell, Ltd., or Eden BioCell, as a joint venture to lead commercialization of the Company’s Sleeping Beauty-generated CAR-T therapies in the People’s Republic of China (including Macau and Hong Kong), Taiwan and Korea. The Company licensed to Eden BioCell the rights in Greater China for its third-generation Sleeping Beauty-generated CAR-T therapies targeting the CD19 antigen. Eden BioCell is owned equally by the Company and TriArm and the parties share decision-making authority. TriArm contributed $10.0 million to Eden BioCell and has committed up to an additional $25.0 million to this joint venture. TriArm also managed all clinical development in the territory pursuant to a master services agreement between TriArm and Eden BioCell. James Huang was the founder and serves as managing partner of Panacea Venture, which is an investor in TriArm. Mr. Huang was the Chair of the Company's board of directors until September 22, 2023 and had been a director since July 2020. He also serves as a member of Eden BioCell’s board of directors.

In September 2021, TriArm and Alaunos mutually agreed to dissolve the Eden BioCell joint venture. The joint venture agreement has been terminated and the Eden BioCell entity has been dissolved as of July 2023. Refer to Note 15, Joint Venture, for further details.

Collaboration with Dune Lake Capital

In January 2023, the Company entered into a consulting agreement with Dune Lake Capital, LLC, or Dune Lake Capital, which was founded by Dale Curtis Hogue, Jr., the Company's interim Chief Executive Officer. During the year ended December 31, 2023, the Company recorded expenses of approximately $37 thousand for consulting services performed by Dune Lake Capital with respect to the period from January 2023 to August 2023.

8.Leases

In April 2022, the Company modified its real estate lease agreement executed on December 15, 2020 with MD Anderson for office space in Houston, Texas, which reduced the Company's leased space from 18,111 square feet to 3,228 square feet. As a result, the associated lease liability and right-of-use asset were remeasured to $0.4 million based on revised lease payments. A gain of $0.1 million was recorded on the lease modification during the year ended December 31, 2022.

In June 2022, the Company executed an agreement to sub-sublease 4,772 square feet of subleased office space in Boston. For the year ended December 31, 2023, the Company recognized $43 thousand in lease income, and for the year ended December 31, 2022, the Company recognized $0.1 million in lease income. Lease income is classified within other income on the statement of operations.

On April 19, 2023, the Company terminated its office lease in Boston, Massachusetts, which was set to expire on August 31, 2026. In connection with the termination, the Company also assigned to the landlord its sub-sublease of the Boston office space, which had a term expiring on June 30, 2025 with an option to extend through July 31, 2026. Termination costs for the Boston office lease were $0.2 million. A gain of $0.2 million was recorded on the lease termination during the year ended December 31, 2023.

In August 2023, in accordance with the lease agreement executed on December 15, 2020, the Company notified MD Anderson, as landlord, of its intention to terminate office space of 3,228 square feet in Houston, Texas. As a result, the associated lease liability and right-of-use asset were remeasured to $19 thousand, reflecting the revised lease payments and term end date of November 2023.

F-16

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

On November 1, 2023, the Company and MD Anderson, as landlord, agreed to mutually terminate the leases dated October 15, 2019 and April 7, 2020, which represented office space totaling 14,037 square feet, effective November 15, 2023. As a result, the Company agreed to make a final payment of $0.1 million to the landlord. A gain of $0.1 million was recorded on the lease termination during the year ended December 31, 2023.

The components of lease expense were as follows:

	Year Ended December 31,
($ in thousands)	2023		2022
Operating lease cost	$	428	$	756
Total lease cost	$	428	$	756
Weighted-average remaining lease term (years)		—		4.13
Weighted-average discount rate		—		8.26	%

The Company paid $0.4 million in operating lease costs for the year-ended December 31, 2023. The Company did not recognize new operating lease assets obtained in exchange for operating lease liabilities for the year-ended December 31, 2023. The Company did not have any leases, other than a short-term lease, as of December 31, 2023.

9.Commitments and Contingencies

Exclusive License Agreement with Precigen

On October 5, 2018, the Company entered into an exclusive license agreement, or License Agreement, with PGEN Therapeutics, or PGEN, a wholly owned subsidiary of Precigen Inc., or Precigen, which was formerly known as Intrexon Corporation. Except where the context otherwise requires, the Company refers to PGEN and Precigen together as Precigen. Pursuant to the terms of the License Agreement, the Company had exclusive, worldwide rights to research, develop and commercialize (i) TCR products designed for neoantigens for the treatment of cancer, (ii) products utilizing Precigen’s RheoSwitch® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products and (iii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) BCMA for the treatment of cancer, subject to certain obligations to pursue such target under the License and Collaboration Agreement effective March 27, 2015 between the Company, Precigen and ARES TRADING S.A., a subsidiary of Merck KGaA, as assigned by Precigen to PGEN. Under the License Agreement, the Company also had exclusive, worldwide rights for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR products for both neoantigens and shared antigens for the treatment of cancer, referred to as TCR Products.

The Company was responsible for all aspects of the research, development and commercialization and was required to use commercially reasonable efforts to develop certain products.

In consideration of the licenses and other rights granted by Precigen, the Company was required to pay Precigen an annual license fee of $0.1 million, reimburse Precigen for certain historical costs, pay Precigen milestones up to an additional $52.5 million for each exclusively licensed program upon the achievement of certain milestones, and pay Precigen tiered royalties up to a maximum royalty amount of $100.0 million in the aggregate. The Company was also obligated to pay Precigen 20% of any sublicensing income received relating to the licensed products. The Company was responsible for all development costs associated with each of the licensed products. For the years ended December 31, 2023 and 2022, the Company paid $0.1 million in annual license fees under this agreement.

Precigen was obligated to pay the Company royalties up to a maximum royalty amount of $100.0 million. No royalty amounts were incurred during the years ended December 31, 2023 and 2022.

On April 3, 2023, the Company entered into the Amended and Restated Exclusive License Agreement with Precigen, or the A&R License Agreement, which restated and amended the License Agreement in full. Under the A&R License Agreement, the Company still has exclusive, worldwide rights to research, develop and commercialize TCR products designed for neoantigens or driver mutations for the treatment of cancer and non-exclusive rights to use non-driver mutation TCRs. The Company further maintains its exclusive, worldwide rights for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR products for both neoantigens and shared antigens for the treatment of cancer, referred to as TCR Products.

The Company remains solely responsible for all aspects of the research, development and commercialization of the exclusively licensed products for the treatment of cancer. The (i) products utilizing Precigen’s RheoSwitch® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products and (ii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) BCMA for the treatment of cancer, subject to certain obligations to pursue such target under the License and Collaboration Agreement

F-17

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

effective March 27, 2015 between the Company, Precigen and ARES TRADING S.A., a subsidiary of Merck KGaA, as assigned by Precigen to PGEN are no longer exclusively licensed to the Company. The Company is no longer obligated to use commercially reasonable efforts for the exclusively licensed products. The A&R License Agreement further eliminates any royalty or milestone obligations to Precigen, with an annual license fee of $75 thousand due on the anniversary of the A&R License Agreement effective date. Precigen is no longer obligated to pay the Company royalties on the net sales derived from the sale of Precigen's CAR products.

License Agreement and 2015 Research and Development Agreement —The University of Texas MD Anderson Cancer Center

On January 13, 2015, the Company, together with Precigen, entered into a license agreement, or the MD Anderson License with MD Anderson (which Precigen subsequently assigned to PGEN). Pursuant to the MD Anderson License, the Company, together with Precigen, holds an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR T-cell therapies, non-viral gene transfer systems, genetic modification and/or propagation of immune cells and other cellular therapy approaches, Natural Killer, or NK Cells, and TCRs.

On August 17, 2015, the Company, Precigen and MD Anderson entered into the 2015 R&D Agreement to formalize the scope and process for the transfer by MD Anderson, pursuant to the terms of the MD Anderson License, of certain existing research programs and related technology rights, as well as the terms and conditions for future collaborative research and development of new and ongoing research programs. The rights and obligations of Precigen under the 2015 R&D Agreement were assigned to the Company pursuant to the Fourth Amendment to 2015 R&D Agreement which was entered into on September 19, 2019 (the “Fourth Amendment”) with an effective date of October 5, 2018. The activities under the 2015 R&D Agreement are directed by a joint steering committee comprised of two members from the Company and one member from MD Anderson.

As provided under the MD Anderson License, the Company provided funding for research and development activities in support of the research programs under the 2015 R&D Agreement for a period of three years and in an amount of no less than $15.0 million and no greater than $20.0 million per year. On November 14, 2017, the Company entered into an amendment to the 2015 R&D Agreement, extending its term until April 15, 2021. In connection with the execution of the 2019 R&D Agreement described below, on October 22, 2019, the Company amended the 2015 R&D Agreement to extend the term of the 2015 R&D Agreement until December 31, 2026 and to allow cash resources on hand at MD Anderson under the 2015 R&D Agreement to be used for development costs under the 2019 Research and Development Agreement, or the 2019 R&D Agreement, which the Company entered into on October 22, 2019, with MD Anderson, pursuant to which the Company agreed to collaborate with respect to the TCR program. For the year ended December 31, 2023 the Company incurred clinical expenses of $0.1 million from MD Anderson related to the 2015 R&D Agreement, and did not incur clinical costs from MD Anderson related to the 2015 R&D Agreement for the year ended December 31, 2022.

The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder, or (b) the twentieth anniversary of the date of the MD Anderson License; provided, however, that following the expiration of the term of the MD Anderson License, the Company, together with Precigen, shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder. After ten years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if the Company and Precigen are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third-party contract if the Company and Precigen are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by the Company and Precigen, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both the Company and Precigen and may be terminated by the mutual written agreement of the Company, Precigen, and MD Anderson.

2019 Research and Development Agreement—The University of Texas MD Anderson Cancer Center

Under the 2019 R&D Agreement, the Company and MD Anderson will, among other things, collaborate on programs to expand the Company's TCR library and conduct clinical trials. The activities under the 2019 R&D Agreement are directed by a joint steering committee comprised of two members from the Company and one member from MD Anderson.

The Company will own all inventions and intellectual property developed under the 2019 R&D Agreement and the Company will retain all rights to all intellectual property, patentable or not, for oncology products manufactured using non-viral gene transfer technologies under the 2019 R&D Agreement, including the Company's Sleeping Beauty technology. The Company has granted MD Anderson an exclusive license for such intellectual property to develop and commercialize autologous TCR products manufactured using viral gene transfer technologies and

F-18

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

any products outside the field of oncology and a non-exclusive license for allogenic TCR products manufactured using viral-based technologies.

Under the 2019 R&D Agreement, the Company agreed, beginning on January 1, 2021, to reimburse MD Anderson up to a total of $20.0 million for development costs under the 2019 R&D Agreement, after the funds from the 2015 R&D Agreement are exhausted. In addition, the Company will pay MD Anderson royalties on net sales of its TCR products. The Company is required to make performance-based payments upon the successful completion of clinical and regulatory benchmarks relating to its TCR products. The aggregate potential benchmark payments are $36.5 million, of which only $3.0 million will be due prior to the first marketing approval of the Company's TCR products. The royalty rates and benchmark payments owed to MD Anderson may be reduced upon the occurrence of certain events. The Company also agreed to sell its TCR products to MD Anderson at preferential prices and will sell the Company's TCR products in Texas exclusively to MD Anderson for a limited period of time following the first commercial sale of the Company's TCR products. For the years ended December 31, 2023 and 2022, the Company incurred clinical expenses of $0.8 million from MD Anderson related to the 2019 R&D Agreement.

The 2019 R&D Agreement will terminate on December 31, 2026 and either party may terminate the 2019 R&D Agreement following written notice of a material breach. The 2019 R&D Agreement also contains customary provisions related to indemnification obligations, confidentiality and other matters.

In connection with the execution of the 2019 R&D Agreement, on October 22, 2019, the Company issued MD Anderson a warrant to purchase 222,222 shares of the Company's common stock, which is referred to as the MD Anderson Warrant. The MD Anderson Warrant has an initial exercise price of $0.015 per share, expires on December 31, 2026, and vests upon the occurrence of certain clinical milestones. As of December 31, 2023, the milestones have not been met.

License Agreement with the NCI

On May 28, 2019, the Company entered into a patent license agreement, or the Patent License, with the NCI. Pursuant to the Patent License, the Company held an exclusive, worldwide license to certain intellectual property to develop and commercialize patient-derived (autologous), peripheral blood T-cell therapy products engineered by transposon-mediated gene transfer to express TCRs reactive to mutated KRAS, TP53 and EGFR neoantigens. In addition, pursuant to the Patent License, the Company held an exclusive, worldwide license to certain intellectual property for manufacturing technologies to develop and commercialize autologous, peripheral blood T-cell therapy products engineered by non-viral gene transfer to express TCRs, as well as a non-exclusive, worldwide license to certain additional manufacturing technologies. On May 29, 2019, January 8, 2020, September 28, 2020, April 16, 2021, May 4, 2021 and August 13, 2021 the Company amended the Patent License to expand its TCR library to include additional TCRs reactive to mutated KRAS and TP53 neoantigens licensed from the NCI.

The terms of the Patent License required the Company to pay the NCI minimum annual royalties in the amount of $0.3 million, which amount would be reduced to $0.1 million once the aggregate minimum annual royalties paid by the Company equaled $1.5 million.

The Company was also required to make performance-based payments upon successful completion of clinical and regulatory benchmarks relating to the licensed products. Of such payments, the aggregate potential benchmark payments were $4.3 million, of which aggregate payments of $3.0 million would be due only after marketing approval in the United States or in Europe, Japan, Australia, China or India. The first benchmark payment of $0.1 million was paid during the year ended December 31, 2022 upon the initiation of the Company's TCR-T Library Phase 1/2 Trial, which was a qualifying Phase 1 clinical trial under the terms of the Patent License.

In addition, the Company was required to pay the NCI one-time benchmark payments following aggregate net sales of licensed products at certain aggregate net sales ranging from $250.0 million to $1.0 billion. The aggregate potential amount of these benchmark payments was $12.0 million. The Company was also required to pay the NCI royalties on net sales of products covered by the Patent License at rates in the low to mid-single digits depending upon the technology included in a licensed product. To the extent the Company entered into a sublicensing agreement relating to a licensed product, the Company would be required to pay the NCI a percentage of all consideration received from a sublicensee, which percentage would decrease based on the stage of development of the licensed product at the time of the sublicense.

The Patent License was to expire upon expiration of the last patent contained in the licensed patent rights, unless terminated earlier. The NCI could terminate or modify the Patent License in the event of a material breach, including if the Company did not meet certain milestones by certain dates, or upon certain insolvency events that remain uncured following the date that is 90 days following written notice of such breach or insolvency event. The Company could terminate the Patent License, or any portion thereof, in the Company's sole discretion at any time upon 60 days’ written notice to the NCI. In addition, the NCI had the right to: (i) require the Company to sublicense the rights to the product candidates covered by the Patent License upon certain conditions, including if the Company was not reasonably satisfying required health and safety needs and (ii) terminate or modify the Patent License, including if the Company was not satisfying requirements for public use as specified by federal regulations. On October 27, 2023, the Company provided the NCI the requisite notice of its intent to terminate the Patent

F-19

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

License, effective December 26, 2023. The Company discovered multiple proprietary TCRs targeting driver mutations through its hunTR TCR discovery platform, including many of the same KRAS and TP53 mutations licensed from the NCI.

For the year ended December 31, 2023 the Company incurred $0.4 million of expenses and incurred $0.7 million of expenses for the year ended December 31, 2022.

Cooperative Research and Development Agreement (CRADA) with the NCI

On January 9, 2017, the Company entered into a Cooperative Research and Development Agreement, or the CRADA, with the NCI. The purpose of this collaboration was to advance a personalized TCR-T approach for the treatment of solid tumors. Using the Company's Sleeping Beauty technology, the NCI would analyze a patient’s own cancer cells, identify their unique neoantigens and TCRs reactive against those neoantigens and then use the Company's Sleeping Beauty technology to transpose one or more TCRs into T cells for re-infusion. Research conducted under the CRADA was under the direction of Steven A. Rosenberg, M.D., Ph.D., Chief of the Surgery Branch at the NCI, in collaboration with the Company's researchers.

The Company was responsible for providing the NCI with the test materials necessary for them to conduct their studies, and eventually, clinical trials pursuant to the CRADA. Inventions, data and materials discovered or produced in connection with performance of the research plan under the CRADA would have remained the sole property of the party who produced the discovery. The parties would have jointly owned all inventions jointly discovered under the research plan. The owner of any invention under the CRADA would have made the decision to file a patent covering the invention, or in the case of a jointly owned invention, the Company would have the first opportunity to file a patent covering the invention. If the Company failed to provide timely notice of its decision to the NCI or decided not to file a patent covering the joint invention, the NCI had the right to make the filing. For any invention solely owned by the NCI or jointly made by the NCI and the Company for which a patent application was filed, the U.S. Public Health service granted the Company an exclusive option to elect an exclusive or non-exclusive commercialization license. For inventions owned solely by the NCI or jointly owned by the NCI and the Company, which were licensed according to the terms described above, the Company agreed to grant to the U.S. government a non-exclusive, non-transferable, irrevocable and paid up license to practice the invention or have the invention practiced on its behalf throughout the world. The Company was also required to grant the U.S. government a non-exclusive, non-transferable, irrevocable and paid up license to practice the invention or have the invention practiced on its behalf throughout the world for any of the Company's solely owned inventions. The agreement could be terminated by any of the parties upon 60 days' prior written consent.

In February 2019, the Company extended the CRADA with the NCI until January 9, 2022, committing an additional $5.0 million to this program; however, for the third and fourth quarters of 2021, the Company was not required to make payments toward the program as agreed with the NCI. In March 2022, the Company entered into an amendment to the CRADA that is retroactive, effective January 9, 2022 to extend the term of the CRADA until January 9, 2023. In June 2022, the Company entered into the Fourth Amendment to the CRADA, or the CRADA Fourth Amendment, which, among other things, extended the term of the CRADA until January 9, 2025. In connection with the CRADA Fourth Amendment, the Company agreed to contribute $1.0 million per year, payable on a quarterly basis, beginning in the first quarter of 2023. The Company recorded expenses of $0.5 million for the year ended December 31, 2023, compared to $0 for the year ended December 31, 2022.

On August 14, 2023, the Company announced that it had provided the requisite notice to terminate the CRADA, pursuant to its terms, effective October 13, 2023, in light of the Company’s exploration of strategic alternatives.

Patent and Technology License Agreement—The University of Texas MD Anderson Cancer Center and the Texas A&M University System

On August 24, 2004, the Company entered into a patent and technology license agreement with MD Anderson and the Texas A&M University System, which the Company refers to, collectively, as the Licensors. Under this agreement, the Company was granted an exclusive, worldwide license to rights (including rights to U.S. and foreign patent and patent applications and related improvements and know-how) for the manufacture and commercialization of two classes of organic arsenicals (water- and lipid-based) for human and animal use. The class of water-based organic arsenicals includes darinaparsin.

Under the terms of the agreement, the Company may be required to make additional payments to the Licensors upon achievement of certain milestones in varying amounts which, on a cumulative basis could total up to an additional $4.5 million. In addition, the Licensors are entitled to receive royalty payments on sales from a licensed product and will also be entitled to receive a portion of any fees that the Company may receive from a possible sublicense under certain circumstances. During the year ended December 31, 2023, the Company did not incur any milestone expenses under this agreement, and the Company incurred $1 thousand in royalty expenses on sales under this agreement during the year ended December 31, 2023. During the year ended December 31, 2022, $2.5 million was incurred as a one-time milestone payment under

F-20

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

the terms of the agreement, and the Company incurred $2 thousand in royalty expenses on sales under this agreement during the year ended December 31, 2022.

Collaboration Agreement with Solasia Pharma K.K.

On March 7, 2011, the Company entered into a License and Collaboration Agreement with Solasia Pharma K. K., or Solasia, which was amended on July 31, 2014 to include an exclusive worldwide license and amended on October 14, 2021 to revise certain payment schedule details, or, as so amended, the Solasia License and Collaboration Agreement. Pursuant to the Solasia License and Collaboration Agreement, the Company granted Solasia an exclusive license to develop and commercialize darinaparsin in both intravenous and oral forms and related organic arsenic molecules, in all indications for human use.

As consideration for the license, the Company is eligible to receive from Solasia development- and sales-based milestones, a royalty on net sales of darinaparsin, once commercialized, and a percentage of any sublicense revenue generated by Solasia. Solasia will be responsible for all costs related to the development, manufacturing and commercialization of darinaparsin. The Company’s licensors, as defined in the Solasia License and Collaboration Agreement, will receive a portion of all milestone and royalty payments made by Solasia to the Company in accordance with the terms of the Solasia License and Collaboration Agreement with the licensors, as described above.

In June 2022, Solasia announced that darinaparsin had been approved from relapsed or refractory Peripheral T-Cell Lymphoma by the Ministry of Health, Labor and Welfare in Japan. During the year ended December 31, 2023, the Company did not earn collaboration revenue and earned $5 thousand in royalty revenues on net sales under the Solasia License and Collaboration Agreement. During the year ended December 31, 2022, the Company earned $2.9 million of collaboration revenue under the Solasia License and Collaboration Agreement primarily related to Solasia's achievement of certain sales-based milestones in Japan, and did not earn royalty revenues on net sales under the agreement.

KBI Biopharma Litigation

On March 17, 2023, KBI Biopharma, Inc., or KBI, filed a complaint against the Company in the District Court of Harris County, Texas, 165th Judicial District, asserting breach of an Amended and Restated Master Services Agreement between the Company and KBI relating to the development of an autologous gene modified T-cell therapy product, or the KBI Agreement. KBI was primarily seeking unspecified monetary damages in excess of $3.2 million. On May 1, 2023, the Company filed an answer generally denying all of KBI’s allegations and asserting affirmative and other defenses as well as counterclaims for breach of the KBI Agreement and conversion. On October 20, 2023, the Company entered into an agreement with KBI to settle all claims asserted by KBI against the Company and the Company's counterclaims against KBI at issue in the litigation for $1.0 million.

10.Warrants

In connection with the Company’s November 2018 private placement that provided net proceeds of approximately $47.1 million, the Company issued warrants to purchase an aggregate of 1,262,626 shares of common stock, which became exercisable six months after the closing of the private placement, or the November 2018 Warrants. The November 2018 Warrants had an exercise price of $45.15 per share and have a five-year term. The fair value of the November 2018 Warrants was estimated at $18.4 million using a Black-Scholes model with the following assumptions: expected volatility of 71%, risk free interest rate of 2.99%, expected life of five years and no dividends.

On July 26, 2019 and September 12, 2019, the Company entered into agreements with existing investors whereby the investors exercised the November 2018 Warrants for an aggregate of 1,186,869 shares of common stock, at an exercise price of $45.15 per share. Proceeds from the warrant exercise after deducting placement agent fees and other related expenses of $1.1 million were approximately $52.5 million.

The Company issued participating investors new warrants to purchase up to 1,186,869 additional shares of common stock (the "2019 Warrants") as consideration for the warrant holders to exercise their November 2018 Warrants. The 2019 Warrants will expire on the fifth anniversary of the initial exercise date and have an exercise price of $105.00. The 2019 Warrants were valued using a Black-Scholes valuation model and resulted in a $60.8 million non-cash charge in the Company’s statement of operations in 2019.

On October 22, 2019, the Company entered into the 2019 R&D Agreement with MD Anderson. In connection with the execution of the 2019 R&D Agreement, the Company issued the MD Anderson Warrant to purchase 222,222 shares of common stock. The MD Anderson Warrant has an initial exercise price of $0.015 per share and grant date fair value of $14.5 million. The MD Anderson Warrant expires on December 31, 2026 and vests upon the occurrence of certain clinical milestones. The Company will recognize expense on the MD Anderson Warrant in the same manner as if the Company paid cash for services to be rendered. For the years ended December 31, 2023 and 2022, the Company did not recognize any expense related to the MD Anderson Warrant as the clinical milestones have not been achieved.

F-21

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

On August 6, 2021, the Company entered into the Loan and Security Agreement with SVB. Refer to Note 4, Debt. In connection with the Loan and Security Agreement, the Company issued SVB warrants to purchase 28,856 shares of common stock with an exercise price of $33.30 per share. The warrants have a ten-year life and were fully vested upon issuance. The fair value of the warrants was estimated at $0.8 million using a Black-Scholes model with the following assumptions: expected volatility of 79%, risk free interest rate of 1.31%, expected life of ten years and no dividends. On December 28, 2021, the Company entered into the First Amendment, as described in Note 4, Debt, in connection with which, the original warrants issued to SVB were amended and restated. As amended and restated, the SVB Warrants are for up to 43,308 shares of common stock, in the aggregate, with an exercise price of $17.40 per share. The SVB Warrants expire on August 6, 2031 and were fully vested upon issuance. As of December 31, 2023, none of the SVB Warrants have been exercised.

11.Restructuring

On August 14, 2023, the Company announced a strategic reprioritization of its business and wind down of its TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, the Company reduced its workforce during the third and fourth quarters of 2023. Concurrently, the Company began considering certain strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. During the year ended December 31, 2023, the Company recorded termination benefits of $1.3 million, recorded in restructuring costs within the statement of operations. The termination benefits were fully paid as of December 31, 2023.

12.Income Taxes

There is no provision for income taxes because the Company has incurred operating losses since inception. The reported amounts of income tax expense for the years ended December 31, 2023 and 2022 differ from the amounts that would result from applying domestic federal statutory tax rates to pretax losses primarily because of the changes in the valuation allowance. Significant components of the Company’s deferred tax assets at December 31, 2023 and 2022 are as follows:

	December 31,
(in thousands)	2023			2022
Deferred tax assets:
Net operating loss carryforwards	$	148,009		$	171,070
Start-up and pre-clinical studies		13,754			17,204
Research and development credit carryforwards		39,838			40,116
Stock-based compensation		681			698
Capitalized acquisition costs		1,570			2,180
Lease liability		—			618
Depreciation		1			239
Capitalized research expenses		7,176			5,156
Other		2			27
		211,031			237,308
Less valuation allowance		(211,031	)		(236,827	)
Total deferred tax assets		—			481
Right-of-use asset		—			(481	)
Total deferred tax liabilities	$	—		$	(481	)
Net deferred taxes	$	—		$	—

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. At December 31, 2023, the Company has aggregate net operating loss carryforwards for federal tax purposes of approximately $704.9 million, of which approximately $341.7 million expire at various dates through December 31, 2037 and approximately $363.2 million can be carried forward indefinitely. The Company is reducing its approximately $497.9 million of state net operating loss carryforwards to $0 as these state net operating loss carryforwards all related to Massachusetts filings and, as of December 31, 2023 the Company no longer had any employees or property in Massachusetts and, as a result, the Company will no longer have income tax nexus in Massachusetts or an income tax filing obligation after the year ended December 31, 2023. Additionally, the Company has approximately $39.8 million of federal and state research and development credits at December 31, 2023, expiring in varying amounts through 2043, which may be available to reduce future taxes. The Company has reduced its Massachusetts credits carryforward to $0.

F-22

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

The Company has provided a valuation allowance for the full amount of its net deferred tax assets since it is more likely than not that these future benefits will not be realized. However, these deferred tax assets may be available to offset future income tax liabilities and expenses. The valuation allowance decreased by $25.8 million in 2023 due primarily to the reduction of Massachusetts net operating loss carryforwards and Massachusetts research and development credits.

Income taxes using the federal statutory income tax rate differ from the Company’s effective tax rate primarily due to non-deductible expenses related to the Company’s issuance of warrants along with the change in the valuation allowance on deferred tax assets.

A reconciliation of income tax expense (benefit) at the statutory federal income tax rate and income taxes as reflected in the financial statements is as follows:

	Year Ended December 31,
(in thousands)	2023			2022
Federal income tax at statutory rates		21	%		21	%
State income tax, net of federal tax benefit		(92	)%		3	%
Research and development credits		2	%		2	%
Research and development true-up		(1	)%		(2	)%
Stock-based compensation	—%				(1	)%
Federal/state rate change		(3	)%		(5	)%
Change in valuation allowance		73	%		(18	)%
Effective tax rate		—	%		—	%

The Company adopted ASC 740, Accounting for Uncertain Tax Positions on January 1, 2007. ASC 740 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, “Accounting for Income Taxes.” ASC 740 prescribes a recognition threshold and measurement of a tax position taken or expected to be taken in a tax return. The Company did not establish any additional reserves for uncertain tax liabilities upon adoption of ASC 740. There were no adjustments to its uncertain tax positions in the years ended December 31, 2023 and 2022.

The Company has not recognized any interest and penalties in the statements of operations because of the Company’s net operating losses and tax credits that are available to be carried forward. When necessary, the Company will account for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes. The Company does not expect the amounts of unrecognized benefits will change significantly within the next twelve months.

The Company is currently open to audit under the statute of limitations by the Internal Revenue Service and state jurisdictions for the years ended December 31, 1999 through 2023 to the extent net operating losses continue to be carried forward to 2023.

Beginning in 2022, the Tax Cuts and Jobs Act of 2017, or the Tax Act, eliminated the option to deduct research and development expenditures immediately in the year incurred and requires taxpayers to capitalize and amortize them over five years pursuant to IRC Section 174. The mandatory capitalization requirement had no impact to the overall deferred tax assets due to the Company's loss position and full valuation allowance.

13.Stock Option Plan

The Company adopted the 2012 Equity Incentive Plan, or the 2012 Plan, in May 2012. Including subsequent increases, the Company had reserved 933,333 shares for issuance. On December 31, 2023, there were 65,728 shares reserved for issuance and no shares available for future grant.

The Company adopted the 2020 Equity Incentive Plan, or the 2020 Plan, in June 2020. The Company reserved 1,400,000 shares for issuance plus a carryover of 71,085 shares from the 2012 Plan for a total of 1,471,085 shares. In addition, returning shares from the 2012 Plan are available for issuance under the 2020 Plan. As of December 31, 2023, there were 400,167 shares reserved for issuance and 1,302,411 shares available for future grant.

Stock options generally vest ratably in either quarterly or annual installments over three or four years, commencing on the first anniversary of the grant date and have contractual terms of ten years. Stock options to directors generally vest ratably over one or two years and have contractual terms of ten years. Stock options are valued using the Black-Scholes option pricing model and compensation is recognized based on such fair value over the period of vesting on a straight-line basis.

F-23

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

There were no proceeds from option exercises during the year ended December 31, 2023 as compared to $21 thousand during the year ended December 31, 2022. The intrinsic value of these options amounted to $26 thousand for the year ended December 31, 2022.

Stock option activity under the Company's stock options plans for the years ending December 31, 2023 and 2022 were as follows:

(in thousands, except share and per share data)	Number of Shares			Weighted- Average Exercise Price		Weighted- Average Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding, December 31, 2021		711,058		$	43.05
Granted		313,167			16.14
Exercised		(1,750	)		12.00
Cancelled		(328,566	)		50.10
Outstanding, December 31, 2022		693,909		$	27.60
Granted		259,122			7.35
Cancelled		(487,133	)		17.70
Outstanding, December 31, 2023		465,898		$	26.85		7.81	$	—
Options exercisable, December 31, 2023		415,376		$	28.80		7.64	$	—
Options available for future grant, December 31, 2023		1,302,411

On December 31, 2023, total unrecognized compensation costs related to non-vested stock options outstanding amounted to $0.4 million, which is expected to be recognized over a weighted-average period of 1.53 years.

Restricted Stock

For the year ended December 31, 2023 the Company did not issue shares of restricted stock and issued 18,667 in the year ended December 31, 2022 to directors. There were no repurchases by the Company for the year ended December 31, 2023. During the year ended December 31, 2022, the Company repurchased 1,250 shares at a price of $36.15 per share to cover payroll taxes for one employee exercise, which is in accordance with the original terms of the award.

A summary of the status of restricted stock as of December 31, 2023 and 2022 is as follows:

	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested, December 31, 2021		79,905		$	31.54
Granted		18,667			12.30
Vested		(20,441	)		34.21
Cancelled		(15,527	)		47.23
Unvested, December 31, 2022		62,604		$	21.04
Vested		(33,322	)		17.94
Cancelled		(29,282	)		24.60
Unvested, December 31, 2023		—		$	—

As of December 31, 2023, there was no unrecognized stock-based compensation expense related to non-vested restricted stock arrangements.

14.Employee Benefit Plan

The Company sponsors a qualified 401(k) retirement plan under which employees are allowed to contribute certain percentages of their pay, up to the maximum allowed under Section 401(k) of the IRC, or the 401(k) Plan. The Company may make contributions to the 401(k) Plan at its discretion. The Company contributed approximately $0.2 million to the 401(k) Plan during the year ended December 31, 2023 and $0.5 million during the year ended December 31, 2022.

15.Joint Venture

F-24

Alaunos Therapeutics, Inc.

NOTES TO FINANCIAL STATEMENTS

On December 18, 2018, the Company entered into a Framework Agreement with TriArm whereby the parties agreed to launch Eden BioCell, to lead clinical development and commercialization of certain Sleeping Beauty-generated CAR-T therapies as set forth in a separate license agreement.

On January 3, 2019, Eden BioCell was incorporated in Hong Kong as a private company. Eden BioCell, the Company and TriArm entered into a Share Subscription Agreement on January 23, 2019, where the Company and TriArm agreed to contribute certain intellectual property, services and cash (only with respect to TriArm) to Eden BioCell to subscribe for a certain number of newly issued ordinary shares in the share capital of Eden BioCell.

The closing of the transaction occurred on July 5, 2019. The Framework Agreement and Share Subscription Agreements were each respectively amended to be effective as of this date. Upon consummation of the joint venture, Eden BioCell and the Company also entered into a license agreement, pursuant to which the Company licensed the rights to Eden BioCell for third generation Sleeping Beauty-generated CAR-T therapies targeting the CD19 antigen for the territory of China (including Macau and Hong Kong), Taiwan and Korea. TriArm and the Company each received a 50% equity interest in the joint venture in exchange for their contributions to Eden BioCell.

The Company determined that Eden BioCell was considered a variable interest entity, or VIE, and concluded that it was not the primary beneficiary of the VIE as it did not have the power to direct the activities of the VIE. As a result, the Company accounted for the equity interest in Eden BioCell under the equity method of accounting as it had the ability to exercise significant influence.

In September 2021, TriArm and the Company mutually agreed to dissolve the joint venture, which has now been terminated. The Eden BioCell entity has been dissolved as of July 2023.

16.Subsequent Events

The Company evaluated all events and transactions that occurred after the balance sheet date through the date of this Annual Report on Form 10-K. Other than as described in the notes to the financial statements, the Company did not have any material subsequent events that impacted its financial statements or disclosures aside from the following.

On January 20, 2024, the Board of Directors appointed Dale Curtis Hogue, Jr. as Interim Chief Executive Officer of the Company, effective immediately. On January 21, 2024, the Company entered into an employment agreement with Mr. Hogue, under which he will receive an annual base salary of $250 thousand. Mr. Hogue was awarded 40,000 shares of common stock of the Company with an exercise price of $1.80.

On February 15, 2024, Michael Wong gave notice of his resignation as Vice President, Finance, effective February 23, 2024. On February 22, 2024, the Company and Ferdinand Groenewald entered into a consulting agreement, or the Consulting Agreement, effective February 22, 2024, pursuant to which Mr. Groenewald will lead accounting and financial reporting activities of the Company. Mr. Groenewald will serve as the Company’s Vice President, Finance. The Consulting Agreement will continue indefinitely until terminated by either party upon 30 days’ advance notice. The Consulting Agreement provides for compensation at a fixed rate of $15 thousand per month and reimbursement by the Company for any usual and customary business expenses incurred by Mr. Groenewald in connection with performing services pursuant to the Consulting Agreement. In addition, the Consulting Agreement provides for the Company to indemnify Mr. Groenewald on terms customary for officers.

F-25

EX-10.59

Exhibit 10.59

CONSULTING AGREEMENT

This Consulting Agreement (this “Agreement”), dated as of November 14, 2023, is made by and between Alaunos Therapeutics, Inc. (the “Company”) and Melinda Lackey (“Consultant”), (together the “Parties”).

WITNESSETH :

WHEREAS, the Company desires to engage Consultant to provide services pursuant to the terms and conditions contained in this Agreement; and

WHEREAS, Consultant desires to accept such engagement pursuant to the terms and conditions contained in this Agreement;

NOW, THEREFORE, in consideration of the premises, and of the mutual covenants and agreements hereinafter contained, the parties agree as follows:

1.Term. Consultant’s services relationship with the Company will commence on November 16, 2023 (the “Start Date”) and will continue indefinitely until terminated in accordance with this Section 1. Either party may terminate this Agreement by providing the other party with at least thirty (30) days of advance written notice of such decision. The period of Consultant’s services relationship with the Company, beginning on the Start Date, is referred to as the “Term.”

2.Services. During the Term, Consultant will be responsible for providing the Company with the services set forth on Exhibit A hereto and such other services as the Parties may agree to from time to time (the “Services”). Consultant may not subcontract or otherwise delegate Consultant’s obligations under this Agreement without the Company’s prior written consent.

3.Compensation.

(a) Service Fee. As sole compensation for the performance of the Services, the Company will pay to Consultant the amount(s) and on the schedule specified in Exhibit B hereto.

(b) No Withholdings. Consultant acknowledges that the Company does not intend to make withholdings from any payments hereunder. Consultant will have the exclusive responsibility for paying any taxes (including income taxes, social security contributions, and similar obligations) on such payments. At the appropriate time, the Company will provide Consultant with a Form 1099 for Consultant’s tax purposes.

(d) No Benefits. The Company will not provide Consultant with any benefits except as provided in this Agreement, nor will Consultant be entitled to participate in any benefit plan or arrangement of the Company or any affiliated entity of the Company, including without limitation any vacation benefit or insurance arrangement (the “Company Benefit Plans”).

4.Independent Contractor Status. Consultant acknowledges that, during the Term, Consultant’s relationship with the Company will be that of an independent contractor, and not that of an employee of the Company. Nothing herein will be deemed to establish a partnership, joint venture, or employment relationship between the parties.

5.Existing Obligations. This Agreement supplements and does not amend the responsibilities of the Parties with respect to agreements regarding confidential information, trade secrets, or invention or intellectual property assignment, including that certain Invention, Non-Disclosure, and Non-Solicitation Agreement dated November 17, 2021.

6.Notices. All notices and other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given (a) when delivered and received by the other party, or (b) two (2) business days after being sent when sent by recognized overnight courier to the following addresses:

if to the Company:

Alaunos Therapeutics, Inc.

2617 Bissonnet St., Suite 225

Houston TX 77005

Attention: legalteam@alaunos.com;

if to Consultant:

Melinda Lackey

mlackey@alaunos.com;

or to such other address as either party will have furnished to the other in writing in accordance with this Section 6, except that such notice of change of address shall be effective only upon receipt.

7.D&O Insurance. The Company has obtained and shall cause to be maintained in effect during the Term of this Agreement, with financially sound insurers, a policy of directors’ and officers’ liability insurance (the “D&O Policy”). The Company and Consultant acknowledge and agree that, in providing the Services, Consultant will act as an officer of the Company, and the Company and Consultant expect and intend that Consultant shall be covered by the D&O policy under no less favorable terms than any other individual covered by the D&O policy. The provisions in this Section 7 shall survive the termination of this Agreement.

8.Indemnification.

(a)The Company shall defend and indemnify Consultant, to the fullest extent permitted by law against any and all threatened, pending, or completed action, suit, proceeding, or alternative dispute resolution mechanism, whether civil, criminal, administrative, arbitrative, investigative, or other, and whether made pursuant to federal, state, or other law (each, a “Claim”) against Consultant as a result of the Consultant’s performance of the Services or as result of the Consultant’s prior work as an employee and officer of the Company, including without limitation Claims brought by or in

2

the right of the Company, Claims brought by third parties, and Claims in which Consultant is solely a witness.

(b)Consultant shall have the right to advancement by the Company, prior to the final disposition of any Claim by final adjudication to which there are no further rights of appeal, of any and all Expenses (as that term is defined below) actually and reasonably paid or incurred by Consultant in connection with any Claim. Consultant’s right to such advancement is not subject to the satisfaction of any standard of conduct. Without limiting the generality or effect of the foregoing, within ten (10) days after any written request by Consultant, the Company shall, in accordance with such request, (a) pay such Expenses on behalf of Consultant, (b) advance to Consultant funds in an amount sufficient to pay such Expenses, or (c) reimburse Consultant for such Expenses. “Expenses” means any and all expenses, including attorneys’ and experts’ fees, court costs, transcript costs, travel expenses, duplicating, printing, and binding costs, telephone charges, and all other costs and expenses incurred in connection with investigating, defending, being a witness in, or participating in (including on appeal), or preparing to defend, be a witness in, or participate in, any Claim.

(c)Without limiting the generality or effect of the foregoing, Consultants right to indemnification and advancement of Expenses shall be no less favorable than that of any officer of the Company.

(d)The provisions in this Section 8 shall survive the termination of this Agreement.

9.Miscellaneous.

(a) In the event that any of the provisions of this Agreement, or the application of any such provisions to Consultant or the Company with respect to obligations hereunder, is held to be unlawful or unenforceable by any court, then the remaining portions of this Agreement shall remain in full force and effect and shall not be invalidated or impaired in any manner.

(b) No waiver by any party of the breach of any term or covenant contained in this Agreement, whether by conduct or otherwise, in any one or more instances, shall be deemed to be, or construed as, a further or continuing waiver of any such breach, or a waiver of any other term or covenant contained in this Agreement.

(c) This Agreement (including all Exhibits hereto) contains the entire agreement between Consultant and the Company with respect to the subject matter of this Agreement (including all Exhibits hereto), and supersedes any and all prior agreements and understandings, whether verbal or written, between Consultant and the Company with respect to the subject matter of this Agreement (including all Exhibits hereto). This Agreement may be amended only by an agreement in writing signed by Consultant and the Company.

(d) This Agreement may not be assigned by Consultant or the Company without the other party’s consent, and any such attempted assignment shall be void and of no effect.

(e) The terms and language of this Agreement are the result of arm’s length negotiations between the parties. Consequently, there shall be no presumption that any ambiguity in this Agreement should be resolved in favor of one party and against another. Any controversy

3

concerning the construction of this Agreement shall be decided neutrally without regard to authorship.

(f) The titles and headings of sections and subsections contained in this Agreement are included solely for convenience of reference and will not control the meaning or interpretation of any of the provisions of this Agreement.

(g) This Agreement may be executed in any number of counterparts, each of which so executed shall be deemed to be an original, and such counterparts shall together constitute but one agreement. Each party may execute this Agreement in Adobe Portable Document Format or in a similar format (“PDF”) sent by electronic mail. In addition, PDF signatures of authorized signatories of any party will be deemed to be original signatures and will be valid and binding, and delivery of a PDF signature by any party will constitute due execution and delivery of this Agreement.

(h) This Agreement shall be governed by, and construed in accordance with, the laws of Texas, without giving effect to its conflict of laws principles.

IN WITNESS WHEREOF, the parties have executed this Agreement effective as of the date first written above.

ALAUNOS THERAPEUTICS, INC.CONSULTANT

By: _/s/ Michael Wong__________ __/s/ Melinda Lackey_________

Name: Michael Wong Name: Melinda Lackey

Title: Vice President, Finance

4

EXHIBIT A

Description of Services

Consultant shall provide legal, corporate and administrative services to the Company and other services as may be requested by the Company.

5

EXHIBIT B

Service Fee

(a) Service Fee: $ 400 per hourly rate paid in U.S. dollars by the Company to Consultant for the entire Term of this Agreement, unless otherwise agreed by the Company and Consultant in writing.

(b) Expenses: The Company will reimburse Consultant for any usual and customary business expenses as may be reasonably required to provide the services to the Company for the term of this Agreement (e.g. office supplies, travel time and mileage).

(c) Payments to Consultant: Consultant will provide the Company a Statement of Services rendered, including hourly fees and expenses, every bi-weekly period during the Term of this Agreement. The payments for Statement of Services rendered will be delivered to Consultant within ten (10) business days upon receipt of the Statement of Services by the Company during the term of this Agreement.

6

EX-10.60

Exhibit 10.60

December 20, 2023

Dear Kevin,

This Separation and Release Agreement (“Agreement”) follows up on our recent discussions concerning the termination of your employment with Alaunos Therapeutics, Inc. (the “Company”). To assist you in your transition, the Company is offering you certain transitional benefits in exchange for a mutual, general release of claims and other terms set forth below.

The specific terms of the Agreement are as follows:

1.Termination of Employment. Effective December 22, 2023, you will be relieved of all duties and not required to perform any additional services, you will be paid through and including December 22, 2023, which shall be your last day of employment with the Company (the “Separation Date”). The Company will pay you all wages earned and any accrued and unused PTO in accordance with the Company’s policies through your Separation Date. You will receive these amounts regardless of whether you sign this Agreement.

2.Separation Pay.

(a)In consideration for your execution of and compliance with this Agreement, provided that you execute, return, and do not revoke this Agreement pursuant to Section 11, you shall receive a one-time lump sum separation payment representing six (6) months of your base salary and six (6) months of COBRA eligibility reflecting the same coverage as you currently hold with the Company (the “Separation Payment”), less all applicable income and payroll taxes, deductions and withholdings. The Separation Payment shall be paid to you on the next regularly scheduled pay day following the Effective Date (as that term is defined below) of this Agreement.

(b)The Company reserves the right to withhold from any payments (including but not limited to the Separation Payment) to you all sums that it is required or allowed to withhold pursuant to applicable tax withholding laws or regulations. You shall remain solely responsible for any and all income or other taxes due by you or assessed against you on payments made to you.

3.Benefits.

(a)Healthcare Continuation Coverage.If applicable, your healthcare coverage will cease as of the last day of the month in which the employment separation occurs. However, you may be eligible to continue health insurance coverage at your own expense pursuant to the Consolidated Omnibus Budget Reconciliation Act (“COBRA”). Pursuant to COBRA, if you are eligible, you will be notified of the procedures to access health care continuation coverage by separate correspondence. All other employee benefits will terminate effective on your Separation Date.

(b)Unemployment Compensation. The Company agrees that if you decide to seek unemployment compensation benefits, it will not contest your application for

unemployment compensation. The Company, however, will not provide any false information to any state agency. The Company makes no representations concerning your eligibility for unemployment compensation. You acknowledge and understand that any determination as to your eligibility for unemployment compensation is made solely by the state agency to which you apply for such benefits.

(c)Other Benefits. Except as specifically set forth in this Agreement, and except as to any vested benefits, your right to, and participation in, all employee benefit plans of the Company shall terminate as of your Separation Date in accordance with the specific terms of each plan. To the extent you have any vested assets in any employee benefit plan of the Company, the status and treatment of any such assets shall be governed by the applicable terms of such plan.

4.Acknowledgements. You acknowledge and agree that:

(a)this Agreement and the Separation Payment are neither intended to nor shall constitute a severance plan and shall confer no benefit on anyone other than the Company and you; and

(b)except for (i) any unpaid regular wages (including accrued but unused vacation time) earned through (and including) the Separation Date, which shall be paid by the Company and (ii) any vested monies due to you pursuant to any retirement programs in which you participate, you have been paid and provided (or will be paid and provided by December 31, 2023) all wages, vacation pay, holiday pay, earned paid sick time, PTO, family and medical leave, bonuses, commissions and any other form of compensation or benefit that may be due to you now or which would have become due in the future in connection with your employment with or separation of employment from the Company.

5.Return of Company Property. Except as agreed to for fulfillment of services under any consulting agreement entered into by you and the Company, you agree to relinquish access to or return to the Company, and agree that you will knowingly retain no copies of: (a) all originals and copies of any proprietary or confidential information and trade secrets of the Company, whether in print, electronic or other form; (b) all originals and copies of Company and customer files, written materials, records and other documents, whether in print, electronic or other form, whether made by you or coming into your possession during the course of your employment with the Company; (c) all identification cards, keys, security passes or other means of access to Company facilities; and (d) any credit cards, or telephone cards. All such property must be returned on or before your Separation Date or the expiration of any consulting agreement, whichever is later. In addition, on the Separation Date or the expiration of any consulting agreement, whichever is later, you will factory-reset your company laptop and company iPhone and ensure all data is deleted. After such deletion, you are permitted to retain this laptop and iPhone.

6.Confidentiality.

(a)You understand that nothing in this Agreement shall limit the rights of any government agency or entity or any party’s right of access to, participation or cooperation

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with any government agency or entity including, but not limited to, the Department of Justice, the Securities and Exchange Commission, Congress, and any agency Inspector General, nor shall anything in this Agreement limit your ability to make any other disclosures that are protected under the whistleblower provisions of federal law or regulation. You understand that you do not need the prior authorization of the Company to make any such reports or disclosures and that you are not required to notify the Company that you have made such reports or disclosures.

(b)You agree to abide by any applicable common law and/or statutory obligations relating to the protection and non-disclosure of the Company’s trade secrets and/or confidential and proprietary documents and information, and you specifically agree that you will not disclose any confidential or proprietary information that you acquired as an employee of the Company to any other person or entity, or use such information in any manner that is detrimental to the interests of the Company.

(c)Defend Trade Secrets Act Notice: Notwithstanding your confidentiality and nondisclosure obligations, you are hereby advised as follows pursuant to the Defend Trade Secrets Act: “An individual shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of a trade secret that (A) is made (i) in confidence to a Federal, State, or local government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of reporting or investigating a suspected violation of law; or (B) is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal. An individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law may disclose the trade secret to the attorney of the individual and use the trade secret information in the court proceeding, if the individual (A) files any document containing the trade secret under seal; and (B) does not disclose the trade secret, except pursuant to court order.”

7.Transition and Cooperation. Following the Separation Date, you agree to make yourself reasonably available to the Company to provide any information related to the transition of your duties. You further agree to reasonably cooperate with and assist the Company as reasonably requested by the Company, with respect to any investigation, litigation, proceeding, arbitration or other formal or informal dispute resolution effort in which you are or have had involvement, is in regard to events that occurred during your tenure with the Company, or with respect to which you have relevant information by being reasonably available (i) to consult with the Company’s counsel, and (ii) for interviews, depositions and/or testimony in regard to any such matters, except with respect to any such matter to which you are or may become a party.

8.Non-Filing of Complaint or Charges. You represent that you have not filed or asserted any cause of action, claim, charge or other action or proceeding against the Company.

9.No Knowledge of Misconduct. You represent that during the term of your employment with the Company, you have at all times conducted yourself in a lawful manner and that you are unaware of any act or omission on your part or the part of the Company that may constitute a violation of any law, regulation, or order, nor do you know of any basis on which any third party or governmental entity could assert such a claim. This expressly includes any and all conduct that potentially could give rise to claims under the Sarbanes-Oxley Act of 2002. You

- 3 -

further represent that you have disclosed any misconduct of which you are aware, including potential violations of Company policies. You further affirm that you have no information concerning any conduct involving the Company that involves any false claims to the United States.

10.Release of All Claims.

(a)You hereby acknowledge and agree that by signing this Agreement and accepting the Severance Payment, you are waiving your right to assert any form of legal claim against the Company of any kind whatsoever from the beginning of time through and including the date you sign this Agreement, except for claims related to the Company’s failure to perform its obligations under this Agreement. Your waiver and release is intended to bar any form of legal claim, charge, complaint or any other form of action (jointly referred to as “Claims”) (specifically including any claims of breach of contract whether express or implied, and claims sounding in intentional or unintentional torts such as negligence and fraud, and any statutory or regulatory claims) against the Company seeking any form of relief including, without limitation, equitable relief (whether declaratory, injunctive or otherwise), the recovery of any damages or any other form of monetary recovery whatsoever (including, without limitation, back pay, front pay, compensatory damages, emotional distress damages, punitive damages, attorneys’ fees and any other costs) against the Company up through and including the date you sign this Agreement. You understand that there could be unknown or unanticipated Claims resulting from your employment with the Company and the termination thereof and agree that such Claims are intended to be, and are, included in this waiver and release.

(b)The Company herby acknowledges and agrees that by signing this Agreement and accepting the consideration herein, the Company is waiving its right to assert any form of legal claim against you, Kevin S. Boyle, Sr., of any kind whatsoever from the beginning of time through and including the Separation Date, except for claims related to any failure to perform your obligations under this Agreement. The Company’s waiver and release is intended to bar any Claims against you seeking any form of relief including, without limitation, equitable relief (whether declaratory, injunctive or otherwise), the recovery of any damages or any other form of monetary recovery whatsoever (including, without limitation, compensatory damages, emotional distress damages, punitive damages, attorneys’ fees and any other costs) against you up through and including the Separation Date. The Company understands that there could be unknown or unanticipated Claims resulting from your employment with the Company and the termination thereof and agree that such Claims are intended to be, and are, included in this waiver and release.

(c)Without limiting the foregoing general waiver and release, you specifically waive and release the Company from any Claims arising from or related to your employment relationship with the Company or the termination thereof, and the Company specifically waives and releases you from any Claims arising from or related to your employment relationship with the Company, including without limitation:

i.Claims under any local, state or federal discrimination, harassment, fair employment practices or other employment related statute, regulation or

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executive order, including, without limitation, the Age Discrimination in Employment Act, the Older Workers Benefits Protection Act (“OWBPA”), the Americans with Disabilities Act, the Genetic Information Nondiscrimination Act, the Pregnancy Discrimination Act, the Worker Adjustment and Retraining Notification Act, the National Labor Relations Act, the Civil Rights Act of 1991, and Title VII of the Civil Rights Act of 1964, each as they may have been amended through the date you sign this Agreement;

ii.Claims under any local, state or federal employment related statute, regulation or executive order relating to wages, hours, whistleblowing, leaves of absence or any other terms and conditions of employment, including, without limitation, the Fair Labor Standards Act, the Equal Pay Act of 1963, and the Family and Medical Leave Act, in its entirety (including, without limitation, the sections concerning payment of wages, minimum wage and overtime), each as they may have been amended through the date you sign this Agreement;

iii.Claims under any local, state or federal common law theory; and

iv.any other Claim arising under other local, state or federal law.

(d)The general release in this Section 10 is not affected or limited by the recitation of the specific releases in this Section 10.

(e)Consistent with federal and state discrimination laws, nothing in this release shall be deemed to prohibit you from challenging the validity of this release under federal or state discrimination laws or from filing a charge or complaint of age or other employment related discrimination with the Equal Employment Opportunity Commission (“EEOC”) or similar state agency, or from participating in any investigation or proceeding conducted by the EEOC or similar state agency. Further, nothing in this release or Agreement shall be deemed to limit the Company’s right to seek immediate dismissal of such charge or complaint on the basis that your signing of this Agreement constitutes a full release of any individual rights under federal or state discrimination laws, or the Company’s right to seek restitution or other legal remedies to the extent permitted by law of the economic benefits provided to you under this Agreement in the event that you successfully challenge the validity of this release and prevail in any claim under federal or state discrimination laws.

(f)The general release in this Section 10 shall not limit any right you may have to receive a whistleblower award or bounty for information provided to the Securities and Exchange Commission.

11.Important Notice Regarding Release of Claims of Age Discrimination.You acknowledge that you knowingly and voluntarily enter into this Agreement with the purpose of waiving and releasing any age discrimination claims you may have under the Age Discrimination in Employment Act (“ADEA”), including the Older Workers Benefit Protection Act (“OWBPA”), and you acknowledge and agree that:

(a)this Agreement is written in a manner in which you fully understand;

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(b)you specifically waive any rights or claims arising under the ADEA;

(c)your agreement to all of the terms set forth in this Agreement is knowing and voluntary;

(d)you are not waiving rights or claims under the ADEA that may arise after the date this Agreement is executed;

(e)the rights and claims waived in this Agreement are in exchange for consideration over and above anything to which you are already entitled;

(f)you have been and are hereby advised in writing to consult with an attorney prior to executing this Agreement, and has, in fact, had an opportunity to do so; and

(g)as required pursuant to the OWBPA, you are being provided with information in Exhibit A to this Agreement which employees are eligible for Severance Payment.

12.Time for Acceptance; Effective Date.

(a)You have been given a period of up to forty-five (45) calendar days, if desired, within which to consider this Agreement and, in the event you decide to execute this Agreement in fewer than forty-five (45) calendar days, you acknowledge that you have done so with the express understanding that you have been given and declined the opportunity to consider this Agreement for a full forty-five (45) calendar days. You further acknowledge that your decision to sign the Agreement in fewer than forty-five (45) calendar days was not induced by the Company through fraud, misrepresentation, or a threat to withdraw or alter the offer prior to the expiration of the forty-five (45) day time period.

(b)You have the right to revoke this waiver and release of any claims under the ADEA covered by this Agreement within seven (7) calendar days from the date you execute this Agreement (the “Revocation Period”). This Agreement shall not be effective until such Revocation Period has expired without you having exercised your revocation rights. Thus, this Agreement will become final, binding and enforceable on the eighth (8th) calendar day after you execute and deliver this Agreement to the Company (“the Effective Date”), provided it has not been duly revoked in accordance with the terms herein. Notice of revocation must be made in writing and received by the Company prior to the conclusion of the Revocation Period. In order to constitute notice of acceptance and/or revocation hereunder, such notice must be delivered to Michael Wong, Vice President, Finance at info@alaunos.com.

(c)This Agreement will be null and void and no Separation Payment or other benefit offered to you pursuant to Paragraph 6 above will be paid if: (i) you do not sign it within the forty-five (45) day period, or (iii) you revoke your execution within the Revocation Period.

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13.Miscellaneous.

(a)Non-Admission. This Agreement does not constitute an allegation, admission or acknowledgment by any party of any unlawful or improper act or conduct, all of which is expressly denied.

(b)Entire Agreement. This Agreement constitutes the full understanding and entire Agreement between you and the Company and supersedes any other agreements of any kind, whether oral or written, formal or informal; provided however, that you shall remain bound by your continuing obligations to preserve the Company’s trade secrets, intellectual property, and confidential information, and you and the Company expressly agree that except for the non-competition obligation set forth in Section 3, which the Company hereby waives, the Invention, Non-Disclosure, Non-Solicitation and Non-Competition Agreement that you signed with the Company (a copy of which is provided in your packet) shall remain in full force and effect. The parties represent and acknowledge that in signing this Agreement, each has not relied upon any representation or statement made by the other not set forth in this Agreement.

(c)Waiver. The parties agree that the failure of a party at any time to require performance of any provision of this Agreement shall not affect, diminish, obviate or void in any way the party’s full right or ability to require performance of the same or any other provision of this Agreement at any time thereafter.

(d)Successor and Assigns. The rights and benefits of the Company under this Agreement shall be assignable to any successor, related or affiliated entity. All rights and obligations under this Agreement shall inure to the benefit of and be binding upon your successors but shall be personal and non-assignable by you.

(e)Governing Law; Jurisdiction. This Agreement shall be construed in accordance with and governed by the laws of the state of Texas without regard to the conflict of law principles thereof. Both parties agree that any action, demand, claim or counterclaim relating to (i) your employment and separation of your employment, and (ii) the terms and provisions of this Agreement or to its breach, shall be commenced solely and exclusively in the state of Texas in a court of competent jurisdiction.

(f)JURY WAIVER. BOTH PARTIES FURTHER AGREE THAT ANY DISPUTE REGARDING THE COMPLIANCE WITH OR ENFORCEABILITY OF THIS AGREEMENT SHALL BE TRIED BY A JUDGE ALONE, AND BOTH PARTIES HEREBY WAIVE AND FOREVER RENOUNCE THE RIGHT TO A TRIAL BEFORE A CIVIL JURY IN ANY SUCH DISPUTE.

(g)Severability. This Agreement is intended to be severable. Should any portion, term or provision of this Agreement be declared or determined by any court to be illegal, invalid or unenforceable, the validity of the remaining portions, terms and provisions, and the application of such portion, term or provision in circumstances other than those as to which it is so declared illegal or unenforceable, shall not be affected

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thereby, and the illegal, invalid or unenforceable portion, term or provision shall be valid and enforceable to the fullest extent permitted by applicable law.

(h)Construction. The headings of the paragraphs of this Agreement are for convenience only and are not binding on any interpretation of this Agreement.

(i)Modifications. No variations or modifications hereof shall be deemed valid unless reduced to writing and signed by the Company and you.

It is the Company’s desire and intent to make certain that you fully understand the provisions and effects of this Agreement. To that end, you have been encouraged and given an opportunity to consult with legal counsel. By executing this Agreement, you are acknowledging that (a) you have been afforded sufficient time to understand the provisions and effects of this Agreement and to consult with legal counsel; (b) your agreements and obligations under this Agreement are made voluntarily, knowingly and without duress; and (c) neither the Company nor its agents or representatives have made any representations inconsistent with the provisions of this Agreement.

If you wish to accept this Agreement, please sign and date the Agreement below and return it to me within the time period specified in Section 12.

We wish you every success for the future.

Sincerely,

_/s/ Michael Wong_______

Michael Wong

Vice President, Finance

By signing this Agreement, I state that I have read it, I understand it, I agree with everything in it and I have signed it knowingly and voluntarily under seal.

_/s/ Kevin S. Boyle, Sr.___

Kevin S. Boyle, Sr.

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EXHIBIT A

ADEA WAIVER INFORMATION

a.The applicable business unit is all personnel employed by Alaunos Therapeutics, Inc. (the “Company”), in its Research & Development, General & Admin, and Technical Operations groups.

b.The job titles listed below were selected or not selected for the elimination of their position and offered severance pay. All individuals who are being offered payment of severance, such offer is contingent upon and subject to entering into a Separation and Release Agreement and General Release (“Separation Agreement”).

c.All persons who are being offered severance subject to a Separation Agreement must sign the Separation Agreement and return it to the Company.

d.The following is a list of the job title and ages of individuals employed by the Company in the applicable Research & Development, General & Admin, and Technical Operations groups who were and were not selected for the offer of severance in exchange for entering into a Separation Agreement:

JOB TITLES AND AGES OF EMPLOYEES SELECTED

FOR TERMINATION AND ELIGIBLE FOR SEVERANCE PAYMENT OFFER

JOB TITLE	AGES
Chief Executive Officer	50

JOB TITLES AND AGES OF EMPLOYEES NOT SELECTED

FOR TERMINATION AND ARE INELIGIBLE FOR SEVERANCE PAYMENT OFFER

JOB TITLE	AGES
Vice President	43

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EX-10.61

Exhibit 10.61

CONSULTING AGREEMENT

This Consulting Agreement (this “Agreement”), dated as of December 22, 2023, is made by and between Alaunos Therapeutics, Inc. (the “Company”) and Kevin S. Boyle Sr. (“Consultant”).

WITNESSETH :

WHEREAS, the Company desires to engage Consultant to provide services pursuant to the terms and conditions contained in this Agreement; and

WHEREAS, Consultant desires to accept such engagement pursuant to the terms and conditions contained in this Agreement;

NOW, THEREFORE, in consideration of the premises, and of the mutual covenants and agreements hereinafter contained, the parties agree as follows:

1.Term. Consultant’s services relationship with the Company will commence on January 1, 2024 (the “Start Date”) and will continue for a period of six (6) months. The period of Consultant’s services relationship with the Company, beginning on the Start Date, is referred to as the “Term.”

2.Services. During the term, Consultant will be responsible for providing the Company with the services set forth on Exhibit A hereto and such other services as the parties may agree to from time to time (the “Services”). Consultant may not subcontract or otherwise delegate Consultant’s obligations under this Agreement without the Company’s prior written consent. While providing the Services, the Consultant will not have specified hours but will be required to make himself reasonably available. The Company shall provide electronic access to Company systems and facilities to facilitate Consultant’s services, including email.

3.Non-Exclusivity. Nothing in this Agreement shall prevent Contractor from seeking or accepting other employment, consulting engagements, or board positions with other companies or organizations, provided that such activities do not (i) create a conflict of interest with the Company’s business or the Services; or (ii) violate any confidentiality obligations owed by the Contractor to the Company under this or any other agreement.

4.Compensation.

(a) Service Fee. As sole compensation for the performance of the Services, the Company will pay to Consultant the amount(s) and on the schedule specified in Exhibit B hereto.

(b) No Withholdings. Consultant acknowledges that the Company does not intend to make withholdings from any payments hereunder. Consultant will have the exclusive

responsibility for paying any taxes (including income taxes, social security contributions, and similar obligations) on such payments. At the appropriate time, the Company will provide Consultant with a Form 1099 for Consultant’s tax purposes.

(c) No Benefits. The Company will not provide Consultant with any benefits except as provided in this Agreement, nor will Consultant be entitled to participate in any benefit plan or arrangement of the Company or any affiliated entity of the Company, including without limitation any vacation benefit or insurance arrangement (the “Company Benefit Plans”).

5.Independent Contractor Status. Consultant acknowledges that, during the Term, Consultant’s relationship with the Company will be that of an independent contractor, and not that of an employee of the Company. Nothing herein will be deemed to establish a partnership, joint venture, or employment relationship between the parties.

6.Existing Obligations. This Agreement supplements and does not amend the responsibilities of the Parties with respect to agreements regarding confidential information, trade secrets, or invention or intellectual property assignment.

7.Notices. All notices and other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given (a) when delivered and received by the other party, or (b) two (2) business days after being sent when sent by recognized overnight courier to the following addresses:

if to the Company:

Alaunos Therapeutics, Inc.

2617 Bissonnet, Suite 225

Houston TX 77054
Attention: Legal Team

Email: legalteam@alaunos.com;

if to Consultant:

Kevin S. Boyle, Sr.

or to such other address as either party will have furnished to the other in writing in accordance with this Section 7, except that such notice of change of address shall be effective only upon receipt.

8.D&O Insurance. The Company has obtained and shall cause to be maintained in effect during the Term of this Agreement, with financially sound insurers, a policy of directors’ and officers’ liability insurance (the “D&O Policy”). The Company and Consultant acknowledge and agree that, in providing the Services, Consultant will act as an officer of the Company, and the Company and Consultant expect and intend that Consultant shall be covered by the D&O policy

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under no less favorable terms than any other individual covered by the D&O policy. The provisions in this Section 8 shall survive the termination of this Agreement.

9.Indemnification.

(a)The Company shall defend and indemnify Consultant, to the fullest extent permitted by law against any and all threatened, pending, or completed action, suit, proceeding, or alternative dispute resolution mechanism, whether civil, criminal, administrative, arbitrative, investigative, or other, and whether made pursuant to federal, state, or other law (each, a “Claim”) against Consultant as a result of the Consultant’s performance of the Services or as result of the Consultant’s prior work as an employee and officer of the Company, including without limitation Claims brought by or in the right of the Company, Claims brought by third parties, and Claims in which Consultant is solely a witness.

(b)Consultant shall have the right to advancement by the Company, prior to the final disposition of any Claim by final adjudication to which there are no further rights of appeal, of any and all Expenses (as that term is defined below) actually and reasonably paid or incurred by Consultant in connection with any Claim. Consultant’s right to such advancement is not subject to the satisfaction of any standard of conduct. Without limiting the generality or effect of the foregoing, within ten (10) days after any written request by Consultant, the Company shall, in accordance with such request, (i) pay such Expenses on behalf of Consultant, (ii) advance to Consultant funds in an amount sufficient to pay such Expenses, or (iii) reimburse Consultant for such Expenses. “Expenses” means any and all expenses, including attorneys’ and experts’ fees, court costs, transcript costs, travel expenses, duplicating, printing, and binding costs, telephone charges, and all other costs and expenses incurred in connection with investigating, defending, being a witness in, or participating in (including on appeal), or preparing to defend, be a witness in, or participate in, any Claim.

(c)Without limiting the generality or effect of the foregoing, Consultants right to indemnification and advancement of Expenses shall be no less favorable than that of any officer of the Company.

(d)The provisions in this Section 9 shall survive the termination of this Agreement.

10.Miscellaneous.

(a) In the event that any of the provisions of this Agreement, or the application of any such provisions to Consultant or the Company with respect to obligations hereunder, is held to be unlawful or unenforceable by any court, then the remaining portions of this Agreement shall remain in full force and effect and shall not be invalidated or impaired in any manner.

(b) No waiver by any party of the breach of any term or covenant contained in this Agreement, whether by conduct or otherwise, in any one or more instances, shall be deemed to be, or construed as, a further or continuing waiver of any such breach, or a waiver of any other term or covenant contained in this Agreement.

(c) This Agreement (including all Exhibits hereto) contains the entire agreement between Consultant and the Company with respect to the subject matter of this Agreement

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(including all Exhibits hereto), and supersedes any and all prior agreements and understandings, whether verbal or written, between Consultant and the Company with respect to the subject matter of this Agreement (including all Exhibits hereto). This Agreement may be amended only by an agreement in writing signed by Consultant and the Company.

(d) This Agreement may not be assigned by Consultant or the Company without the other party’s consent, and any such attempted assignment shall be void and of no effect.

(e) The terms and language of this Agreement are the result of arm’s length negotiations between the parties. Consequently, there shall be no presumption that any ambiguity in this Agreement should be resolved in favor of one party and against another. Any controversy concerning the construction of this Agreement shall be decided neutrally without regard to authorship.

(f) The titles and headings of sections and subsections contained in this Agreement are included solely for convenience of reference and will not control the meaning or interpretation of any of the provisions of this Agreement.

(g) This Agreement may be executed in any number of counterparts, each of which so executed shall be deemed to be an original, and such counterparts shall together constitute but one agreement. Each party may execute this Agreement in Adobe Portable Document Format or in a similar format (“PDF”) sent by electronic mail. In addition, PDF signatures of authorized signatories of any party will be deemed to be original signatures and will be valid and binding, and delivery of a PDF signature by any party will constitute due execution and delivery of this Agreement.

(h) This Agreement shall be governed by, and construed in accordance with, the laws of Texas, without giving effect to its conflict of laws principles.

IN WITNESS WHEREOF, the parties have executed this Agreement effective as of the date first written above.

ALAUNOS THERAPEUTICS, INC.CONSULTANT

By: _/s/ Michael Wong__________ __/s/ Kevin S. Boyle Sr._____

Name: Michael Wong Name: Kevin S. Boyle Sr.

Title: Vice President, Finance

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EXHIBIT A

Description of Services

The Consultant, in their capacity as a former CEO, will provide the following Services:

(a) Strategic Advisory: The Consultant will provide strategic advice and insights based on their experience and knowledge of the Company’s operations, industry trends, and competitive landscape.

(b) Other Services: The Consultant will perform other services as mutually agreed upon between the Company and the Consultant from time to time.

The Consultant agrees to provide the Services in a professional and diligent manner, consistent with industry standards and in compliance with the Company’s policies and procedures. The Consultant may not subcontract or otherwise delegate their obligations under this Agreement without the Company’s prior written consent. While providing the Services, the Consultant will not have specified hours but will be required to make themselves reasonably available.

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EXHIBIT B

Service Fee

(a) Service Fee: $15,000.00 per month paid in U.S. dollars by the Company to Consultant for the entire Term of this Agreement, unless otherwise agreed by the Company and Consultant in writing, payable at the beginning of each month with no invoice required from Consultant.

(b) Expenses: The Company will reimburse Consultant for any usual and customary business expenses as may be reasonably required to provide the services to the Company for the term of this Agreement (e.g. office supplies, travel time and mileage).

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EX-10.62

Exhibit 10.62

CONSULTING AGREEMENT

This Consulting Agreement (this “Agreement”), dated as of February 22, 2024, is made by and between Alaunos Therapeutics, Inc. (the “Company”) and Ferdinand Groenewald (“Consultant”), (together the “Parties”).

WITNESSETH :

WHEREAS, the Company desires to engage Consultant to provide services pursuant to the terms and conditions contained in this Agreement; and

WHEREAS, Consultant desires to accept such engagement pursuant to the terms and conditions contained in this Agreement;

NOW, THEREFORE, in consideration of the premises, and of the mutual covenants and agreements hereinafter contained, the parties agree as follows:

1.Term. Consultant’s services relationship with the Company will commence on Thursday, February 22, 2023 (the “Start Date”) and will continue indefinitely until terminated in accordance with this Section 1. Either party may terminate this Agreement by providing the other party with at least thirty (30) days of advance written notice of such decision. The period of Consultant’s services relationship with the Company, beginning on the Start Date, is referred to as the “Term.”

2.Services. During the Term, Consultant will be responsible for providing the Company with the services set forth on Exhibit A hereto and such other services as the Parties may agree to from time to time (the “Services”). Consultant may not subcontract or otherwise delegate Consultant’s obligations under this Agreement without the Company’s prior written consent.

3.Compensation.

(a) Service Fee. As sole compensation for the performance of the Services, the Company will pay to Consultant the amount(s) and on the schedule specified in Exhibit B hereto.

(b) No Withholdings. Consultant acknowledges that the Company does not intend to make withholdings from any payments hereunder. Consultant will have the exclusive responsibility for paying any taxes (including income taxes, social security contributions, and similar obligations) on such payments. At the appropriate time, the Company will provide Consultant with a Form 1099 for Consultant’s tax purposes.

(d) No Benefits. The Company will not provide Consultant with any benefits except as provided in this Agreement, nor will Consultant be entitled to participate in any benefit plan or arrangement of the Company or any affiliated entity of the Company, including without limitation any vacation benefit or insurance arrangement (the “Company Benefit Plans”).

4.Independent Contractor Status. Consultant acknowledges that, during the Term, Consultant’s relationship with the Company will be that of an independent contractor, and not that of an employee of the Company. Nothing herein will be deemed to establish a partnership, joint venture, or employment relationship between the parties.

5.Confidentiality.Consultant acknowledges and agrees that this Agreement creates a relationship of confidence and trust on the part of Consultant as Consultant provides Services for the benefit of the Company. In the performance of Consultant’s obligations under this Agreement, Consultant and its principals, agents, employees and contractors may receive, create for the Company and/or have access to, among other things, technical, customer, personnel and business information in written, graphic, oral or other tangible forms such as specifications, records, data, computer programs, drawings, models, reports and samples (collectively referred to as “Confidential Information”) owned or controlled by the Company. Such Confidential Information contains material that is proprietary or confidential, or material that is protected by applicable laws regarding secrecy of communications or trade secrets. Accordingly:

(a)Consultant recognizes and agrees that nothing in this Agreement will be construed as granting any rights, by license or otherwise, to any Confidential Information or to any inventions or patents, trade secrets, copyrights, trademarks, or other intellectual property right that has issued or that may issue based on such Confidential Information. All Confidential Information (including all copies thereof) will at all times remain the property of the Company and will be immediately returned to the Company after Consultant’s need for it has expired, or upon request of the Company, and in any event, upon completion or termination of the Services to be provided by Consultant. At such time, Consultant shall also erase, delete, or destroy any notes, documents, magnetic media or other computer storage, including system backups, which contain any Confidential Information.

(b)Consultant will advise its principals, employees, agents and contractors who might have access to Confidential Information of the confidential nature thereof and agrees that its employees will be bound by the terms of this Agreement. Consultant will not disclose any Confidential Information to any employee except for those persons who have a need for such information in connection with Consultant rendering the Services and who agree in writing to bound by the provision of this Agreement, nor will it disclose any Confidential Information to any third party without first obtaining the Company’s express written consent, which may be withheld in the sole discretion of the Company. For the purposes of this Sub- section (b), the term “employee” will include, in addition to employees, directors, officers, members, owners, independent contractors, consultants, collaborators and other agents of the Consultant.

(c)The term “Confidential Information” will not include information that Consultant can establish (i) was publicly known and made generally available in the public domain prior to the time of disclosure to Consultant; (ii) becomes publicly known and made generally available after disclosure to Consultant through no action or inaction of Consultant; (iii) is in the possession of Consultant, without confidentiality restrictions, at the time of disclosure by the Company, as shown by Consultant’s files and records immediately prior to the time of disclosure; or (iv) is approved for release by the Company in writing. Moreover, this confidentiality restriction shall not apply to information that is required by law or regulation or required pursuant to a valid order of a court or regulatory agency to be disclosed by Consultant, but only to the limit and extent of such required disclosure, provided that, prior to such disclosure, Consultant provides the Company with prompt written notice of such requirement and the facts and circumstances concerning such requirement and assists the Company in obtaining an order or orders protecting the information from any disclosure or limiting the extent of information to be disclosed.

6.IntellectualPropertyRights.

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(a)(a) It is the intention of the parties that the Company should own the rights in any materials and work product resulting from the Services. To that end, Consultant shall on the Company’s written request from time to time sign an unconditional assignment with full title guarantee of all rights in any such materials as are owned by Consultant and capable of assignment. Consultant shall also waive any moral rights it may have in the any materials created by Consultant for Company when providing Services.

(b)In addition, any information, know-how, data, results, and inventions, and any associated intellectual property, that is made, discovered, created, invented or generated by Consultant in any activities or work under this Agreement shall be owned by the Company.

(c)Consultant acknowledges that the Company does not desire to acquire any trade secrets, know-how, confidential information, or other intellectual property that Consultant may have acquired from or developed for any third parties. In the course of providing the Services, Consultant shall not use or disclose any third party intellectual property, including without limitation any intellectual property of (i) any former or current employer, (ii) any person for whom Consultant has performed or currently performs consulting services, or (iii) any other person to whom Consultant has a legal obligation regarding the use or disclosure of such intellectual property.

(d)Consultant agrees to assist in any logistics of future intellectual property that is generated from this Agreement as needed and determined by Consultant, with no compensation solely for such participation, including but not limited signing assignment forms, inventor forms, and advising on substantive matters as needed by and when requested by the Company. Company agrees to pay for any associated expenses, fees, and further patent prosecution.

7.Notices. All notices and other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given (a) when delivered and received by the other party, or (b) two (2) business days after being sent when sent by recognized overnight courier to the following addresses:

if to the Company:

Alaunos Therapeutics, Inc.

2617 Bissonnet St., Suite 225

Houston TX 77005

Attention: legalteam@alaunos.com;

if to Consultant:

Ferdinand Groenewald

or to such other address as either party will have furnished to the other in writing in accordance with this Section 6, except that such notice of change of address shall be effective only upon receipt.

D&O Insurance. The Company has obtained and shall cause to be maintained in effect during the Term of this Agreement, with financially sound insurers, a policy of directors’ and officers’ liability insurance (the “D&O Policy”). The Company and Consultant acknowledge and agree that, in providing the Services, Consultant will act as an officer of the Company, and the Company and Consultant expect and intend that Consultant shall be covered by the D&O policy under no less favorable terms than any other individual covered

3

by the D&O policy. The provisions in this Section 7 shall survive the termination of this Agreement.

8.Indemnification.

(a)The Company shall defend and indemnify Consultant, to the fullest extent permitted by law against any and all threatened, pending, or completed action, suit, proceeding, or alternative dispute resolution mechanism, whether civil, criminal, administrative, arbitrative, investigative, or other, and whether made pursuant to federal, state, or other law (each, a “Claim”) against Consultant as a result of the Consultant’s performance of the Services or as result of the Consultant’s prior work as an employee and officer of the Company, including without limitation Claims brought by or in the right of the Company, Claims brought by third parties, and Claims in which Consultant is solely a witness.

(b)Consultant shall have the right to advancement by the Company, prior to the final disposition of any Claim by final adjudication to which there are no further rights of appeal, of any and all Expenses (as that term is defined below) actually and reasonably paid or incurred by Consultant in connection with any Claim. Consultant’s right to such advancement is not subject to the satisfaction of any standard of conduct. Without limiting the generality or effect of the foregoing, within ten (10) days after any written request by Consultant, the Company shall, in accordance with such request, (a) pay such Expenses on behalf of Consultant, (b) advance to Consultant funds in an amount sufficient to pay such Expenses, or (c) reimburse Consultant for such Expenses. “Expenses” means any and all expenses, including attorneys’ and experts’ fees, court costs, transcript costs, travel expenses, duplicating, printing, and binding costs, telephone charges, and all other costs and expenses incurred in connection with investigating, defending, being a witness in, or participating in (including on appeal), or preparing to defend, be a witness in, or participate in, any Claim.

(c)Without limiting the generality or effect of the foregoing, Consultants right to indemnification and advancement of Expenses shall be no less favorable than that of any officer of the Company.

(d)The provisions in this Section 8 shall survive the termination of this Agreement.

9.Miscellaneous.

(a) In the event that any of the provisions of this Agreement, or the application of any such provisions to Consultant or the Company with respect to obligations hereunder, is held to be unlawful or unenforceable by any court, then the remaining portions of this Agreement shall remain in full force and effect and shall not be invalidated or impaired in any manner.

(b) No waiver by any party of the breach of any term or covenant contained in this Agreement, whether by conduct or otherwise, in any one or more instances, shall be deemed to be, or construed as, a further or continuing waiver of any such breach, or a waiver of any other term or covenant contained in this Agreement.

(c) This Agreement (including all Exhibits hereto) contains the entire agreement between Consultant and the Company with respect to the subject matter of this Agreement (including all Exhibits hereto), and supersedes any and all prior agreements and understandings, whether verbal or written, between Consultant and the Company with respect to the subject matter

4

of this Agreement (including all Exhibits hereto). This Agreement may be amended only by an agreement in writing signed by Consultant and the Company.

(d) This Agreement may not be assigned by Consultant or the Company without the other party’s consent, and any such attempted assignment shall be void and of no effect.

(e) The terms and language of this Agreement are the result of arm’s length negotiations between the parties. Consequently, there shall be no presumption that any ambiguity in this Agreement should be resolved in favor of one party and against another. Any controversy concerning the construction of this Agreement shall be decided neutrally without regard to authorship.

(f) The titles and headings of sections and subsections contained in this Agreement are included solely for convenience of reference and will not control the meaning or interpretation of any of the provisions of this Agreement.

(g) This Agreement may be executed in any number of counterparts, each of which so executed shall be deemed to be an original, and such counterparts shall together constitute but one agreement. Each party may execute this Agreement in Adobe Portable Document Format or in a similar format (“PDF”) sent by electronic mail. In addition, PDF signatures of authorized signatories of any party will be deemed to be original signatures and will be valid and binding, and delivery of a PDF signature by any party will constitute due execution and delivery of this Agreement.

(h) This Agreement shall be governed by, and construed in accordance with, the laws of Texas, without giving effect to its conflict of laws principles.

IN WITNESS WHEREOF, the parties have executed this Agreement effective as of the date first written above.

ALAUNOS THERAPEUTICS, INC.CONSULTANT

By: _/s/ Dale Curtis Hogue, Jr. __/s/ Ferdinand Groenewald___

Name: Dale Curtis Hogue, Jr. Name: Ferdinand Groenewald

Title: CEO (interim)

5

EXHIBIT A

Description of Services

Consultant shall lead the accounting and financial reporting function of the Company. Consultant will work directly with the Board of Directors, Company employees and other consultants to ensure proper and complete monthly / quarterly close processes. Consultant will partner with the business in making decisions and promoting continuous improvement. This is a hands-on role that reports directly to the CEO and Board Chair. Further specific responsibilities will include, but not be limited to the following:

•Lead accounting and financial reporting activities of the Company in accordance with U.S. GAAP and SEC requirements

•Ensure effective financial close process and timely SEC filings (10-Q, 10-K, 8-K, registration statements, etc.)

•Serve as Principal Accounting Officer for the Company

•Prepare or review general ledger account reconciliations, including journal entries and supporting documentation, to validate accuracy of reported balances

•Responsible for maintaining a strong public company internal control environment in accordance with the provisions of the Sarbanes-Oxley Act within the accounting and reporting function

•Serve as U.S. GAAP technical resource, including literature research and application to transactions or processes

•Liaise with external tax consultants to ensure compliance with all tax jurisdictions

•Review and update accounting policies and procedures to ensure compliance with U.S. GAAP, including the adoption of new accounting pronouncements

•Serve as key contact with internal and external auditors

•Prepare and present Audit Committee / Board of Directors materials and communications

•Manage the treasury function

•Equity management with transfer agent and awards in Certent (equity management tool)

•Motivated in taking on tasks beyond formal job responsibilities and ability to work in a dynamic and changing environment

•Approve and pay invoices and payroll; ability to execute accounts payable function

6

•Drive the timing for monthly billing and other cash management and expense management techniques

•Ongoing financial planning and analysis and financial forecasting processes

•Evaluate and present period end analytical reviews of financial information

•Provide ad-hoc reporting and analysis

7

EXHIBIT B

Service Fee

(a) Service Fee: $15,000 per month rate paid in U.S. dollars by the Company to Consultant for the entire Term of this Agreement, unless otherwise agreed by the Company and Consultant in writing.

(b) Expenses: The Company will reimburse Consultant for any usual and customary business expenses as may be reasonably required to provide the services to the Company for the term of this Agreement (e.g. office supplies, travel time and mileage).

(c) Payments to Consultant: Consultant will be paid monthly on the first day of the month for services rendered the previous month (or fraction of month for first payment).

8

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statements (Nos. 333-129884, 333 134280, 333-142701, 333-160496, 333-167925, 333-185433, 333-199304, 333-220804, 333 228291, 333-238090, 333-241698 and 333-263983) on Form S-8 and Registration Statements (Nos. 333-134279, 333-141014, 333-161453, 333-162160, 333-163517, 333-166444, 333-174292, 333 177793, 333-201826, 333-229555, 333-232283 and 333-266841) on Form S-3 of Alaunos Therapeutics, Inc. of our report dated April 1, 2024, relating to the financial statements of Alaunos Therapeutics, Inc., appearing in this Annual Report on Form 10-K of Alaunos Therapeutics, Inc. for the year ended December 31, 2023.

/s/ RSM US LLP

Boston, Massachusetts

April 1, 2024

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER

I, Dale Curtis Hogue, Jr.., certify that:

1)I have reviewed this Annual Report on Form 10-K of Alaunos Therapeutics, Inc.;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 1, 2024

/s/ Dale Curtis Hogue, Jr.

Dale Curtis Hogue, Jr.

Interim Chief Executive Officer and Director

Principal Executive Officer and

Principal Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Alaunos Therapeutics, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dale Curtis Hogue, Jr.,, Interim Chief Executive Officer and Director (and Principal Executive Officer and Principal Financial Officer) of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Dale Curtis Hogue, Jr.

Dale Curtis Hogue, Jr.

Interim Chief Executive Officer and Director

Principal Executive Officer and

Principal Financial Officer

April 1, 2024

EX-97.1

Exhibit 97.1

Alaunos Therapeutics, Inc.

Compensation Clawback Policy

Adopted October 3, 2023

Purpose

The Board of Directors (the “Board”) of Alaunos Therapeutics, Inc. (the “Corporation”) has adopted this compensation clawback policy (the “Policy”) which provides for the recoupment of incentive-based compensation in the event of an accounting restatement. This Policy is intended to comply with Section 10D of the Securities Exchange Act of 1934 (the “Act”), the rules promulgated thereunder by the Securities and Exchange Commission (the “SEC”), and the listing standards of The Nasdaq Stock Market LLC (“Nasdaq” and such rules and listing standards the “Applicable Rules”), and will be interpreted consistent therewith.

Applicability and Effective Date

This Policy is effective October 2, 2023 (the “Effective Date”) and is applicable to all Incentive-Based Compensation (as defined below) received by Executive Officers (as defined below) after the Effective Date. The Policy will be administered by the Board or, if so designated by the Board, the Compensation Committee of the Board (the “Committee”), in which case references to the Board will be deemed to be references to the Committee. Any determination made by the Board under this Policy will be final and binding on all affected individuals. Each Executive Officer shall be required to execute the acknowledgement in Appendix A of this Policy as soon as practicable after the later of (i) the Effective Date and (ii) the date on which the employee is designated as an Executive Officer; provided, however, that failure to execute such acknowledgement shall have no impact on the enforceability of this Policy.

Restatement Clawback

In the event the Corporation is required to prepare an Accounting Restatement (as defined below), any Executive Officer who received Excess Compensation (as defined below) during the three (3) completed fiscal years preceding the date the Corporation is required to prepare an Accounting Restatement (the “Look-Back Period”) shall be required to repay or forfeit such Excess Compensation reasonably promptly. For purposes of this Policy, the date the Corporation is required to prepare an Accounting Restatement is deemed to be the earlier of the date (i) the Board concludes, or reasonably should have concluded, that the Corporation is required to prepare an Accounting Restatement, or (ii) a court, regulator, or other legally authorized body directs the Corporation to prepare an Accounting Restatement.

Method of Repayment, Conditions for Non-Recovery

The Board shall have discretion to determine the appropriate means of recovery of Excess Compensation, which may include, without limitation, direct payment in a lump sum from the Executive Officer, recovery over time, cancellation of outstanding awards, the reduction of future pay and/or awards, and/or any other method which the Board determines is advisable to achieve reasonably prompt recovery of Excess Compensation. At the direction of the Board, the Corporation shall take all actions reasonable and appropriate to recover Excess Compensation from any applicable Executive Officer, and such Executive Officer shall be required to reimburse the Corporation for any and all expenses reasonably incurred (including legal fees) by the Corporation in recovering such Excess Compensation in accordance with this Policy.

The Committee, or in the absence of the Committee, a majority of the independent directors on the Board, may determine that repayment of Excess Compensation (or a portion thereof) is not required only whereit determines that recovery would be impracticable and one of the following circumstances exists: (i) the direct expense paid to a third party to assist in enforcing this Policy would exceed the amount to be recovered, provided the Corporation has (A) made a reasonable attempt to recover such Excess Compensation, (B) documented such reasonable attempt, and (C) provided such documentation to Nasdaq; or (ii) recovery would likely cause an otherwise tax-qualified retirement plan, under which benefits are broadly available to employees of the Corporation, to fail to meet the requirements of 26 U.S.C. 401(a)(13) or 26 U.S.C. 411(a) and the regulations thereunder.

No Fault Application, No Indemnification

Recovery of Excess Compensation under this Policy is on a “no fault” basis, meaning that it will occur regardless of whether the Executive Officer engaged in misconduct or was otherwise directly or indirectly responsible, in whole or in part, for the Accounting Restatement. No Executive Officer may be indemnified by the Corporation, or any of its affiliates, from losses arising from the application of this Policy.

Definitions

For purposes of this Policy, the following definitions will apply:

“Accounting Restatement” means an accounting restatement due to the material noncompliance of the Corporation with any financial reporting requirement under securities laws, including any required accounting restatement to correct an error in previously issued financial statements that is material to the previously issued financial statements, or that corrects an error that is not material to previously issued financial statements but would result in a material misstatement if the error were corrected in the current period or left uncorrected in the current period.

Changes to financial statements that do not constitute an Accounting Restatement include retroactive: (i) application of a change from one generally accepted accounting principle to another generally accepted accounting principle; (ii) revisions to reportable segment information due to a change in internal organization; (iii) reclassification due to a discontinued operation; (iv) application of a change in reporting entity, such as from a reorganization of entities under common control; and (v) revisions for stock splits, reverse stock splits, stock dividends, or other changes in capital structure.

“Excess Compensation” means any amount of Incentive-Based Compensation received by an Executive Officer after commencement of service as an Executive Officer that exceeds the amount of Incentive-Based Compensation that otherwise would have been received had it been determined based on the Accounting Restatement, computed without regard to any taxes paid. For Incentive Compensation based on stock price or total shareholder return, where the amount to be recovered is not subject to mathematical recalculation directly from information in the Accounting Restatement, the amount to be recovered shall be based on a reasonable estimate of the effect of the Accounting Restatement on the stock price or total shareholder return, as applicable, and the Corporation shall retain documentation of the determination of such estimate and provide such documentation to Nasdaq if so required by the Applicable Rules. Incentive-Based Compensation is deemed received during the fiscal year during which the applicable financial reporting measure, stock price and/or total shareholder return measure, upon which the payment is based, is achieved, even if the grant or payment occurs after the end of such period.

“Executive Officer” means an individual who is, or was during the Look-Back Period, an executive officer of the Corporation within the meaning of Rule 10D-1(d) under the Act.

“Incentive-Based Compensation” means any compensation that is granted, earned or vested based wholly or in part on stock price, total shareholder return, and/or the attainment of (i) any financial reporting measure(s) that are determined and presented in accordance with the accounting principles used in preparing the Corporation’s financial statements and/or (ii) any other measures that are derived in whole or in part from such measures.

Compensation that does not constitute “Incentive-Based Compensation” includes equity incentive awards for which the grant is not contingent upon achieving any financial reporting measure performance goal for an individual to receive such award and that vest exclusively upon completion of a specified employment period, without any performance condition, and bonus awards that are discretionary or based on subjective goals or goals unrelated to financial reporting measures.

Administration, Amendment, and Termination

- 2 -

This Policy will be enforced and, if applicable, appropriate proxy disclosures and exhibit filings will be made in accordance with the Applicable Rules and any other applicable rules and regulations of the SEC.

The Board shall have authority to (i) exercise all of the powers granted to it under the policy, (ii) construe, interpret, and implement this Policy, and (iii) make all determinations necessary or advisable in administering this Policy.

In addition, the Board may amend this Policy, from time to time in its discretion, and shall amend this Policy, as it deems necessary, including to reflect changes in applicable law, rule or regulation. The Board may terminate this Policy at any time. Any such amendment (or provision thereof) or termination shall not be effective if such amendment or termination would (after taking into account any actions taken by the Corporation contemporaneously with such amendment or termination) cause the Corporation to violate the Applicable Rules.

In the event of any conflict or inconsistency between this Policy and any other policies, plans, or other materials of the Corporation (including any agreement between the Corporation and any Executive Officer subject to this Policy), this Policy will govern.

This Policy will be deemed to be automatically updated to incorporate any requirement of law, rule or regulation applicable to the Corporation, including those promulgated by the SEC and the Applicable Rules.

- 3 -

Appendix A:

Alaunos Therapeutics, Inc.

Compensation Clawback Policy

ACKNOWLEDGMENT

The undersigned acknowledges and agrees that the undersigned (i) is, and will be, subject to the Compensation Clawback Policy to which this acknowledgement is appended, as may be amended from time to time (the “Policy”) and (ii) will abide by the terms of the Policy, including by returning Excess Compensation pursuant to whatever method the Board determines is advisable to achieve reasonably prompt recovery of such Excess Compensation, as prescribed under the Policy.

Capitalized terms used but not defined have the meanings set forth in the Policy.

Print Name

Signature

Dated:

- 4 -

XML

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2023	Mar. 27, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Registrant Name	Alaunos Therapeutics, Inc.
Entity Central Index Key	0001107421
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Trading Symbol	TCRT
Document Transition Report	false
Document Annual Report	true
Security Exchange Name	NASDAQ
Title of 12(b) Security	Common Stock
Entity File Number	001-33038
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2617 Bissonnet Street,
Entity Address, Address Line Two	Suite 225
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77005
Entity Tax Identification Number	84-1475642
City Area Code	346
Local Phone Number	355-4099
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Document Financial Statement Error Correction [Flag]	false
ICFR Auditor Attestation Flag	false
Entity Common Stock, Shares Outstanding		16,012,479
Entity Public Float			$ 94,764,946
Auditor Name	RSM US LLP
Auditor Location	Boston, MA
Auditor Firm ID	49

XML

BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 6,062	$ 39,058
Restricted cash	0	13,938
Receivables	1	4
Prepaid expenses and other current assets	2,198	799
Total current assets	8,261	53,799
Property and equipment, net	2	8,460
Right-of-use assets	0	2,136
Deposits	0	42
Other non-current assets	0	500
Total assets	8,263	64,937
Current liabilities:
Accounts payable	616	1,389
Current portion of long-term debt	0	16,765
Accrued expenses	1,340	5,454
Lease liabilities, current	0	558
Total current liabilities	1,956	24,166
Lease liabilities, non-current	0	2,188
Other non-current liabilities	0	28
Total liabilities	1,956	26,382
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock $0.001 par value; 34,666,667 shares authorized, 16,012,522 shares issued and outstanding at December 31, 2023 and 28,000,000 shares authorized,16,027,384 shares issued and outstanding at December 31, 2022	16	16
Additional paid-in capital	922,058	919,166
Accumulated deficit	(915,767)	(880,627)
Total stockholders' equity	6,307	38,555
Total liabilities and stockholders' equity	$ 8,263	$ 64,937

XML

BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	34,666,667	28,000,000
Common stock, shares issued	16,012,522	16,027,384
Common stock, shares outstanding	16,012,522	16,027,384

XML

STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Collaboration revenue	$ 5	$ 2,922
Operating expenses:
Research and development	16,279	25,018
General and administrative	12,219	13,142
Gain on lease modification and termination	(298)	(133)
Restructuring costs	1,269	0
Property and equipment and right-of-use assets impairment	4,803	0
Total operating expenses	34,272	38,027
Loss from operations	(34,267)	(35,105)
Other income (expense):
Interest expense	(1,921)	(3,154)
Other income , net	1,048	529
Other income (expense), net	(873)	(2,625)
Net loss	$ (35,140)	$ (37,730)
Earnings per share, Basic	$ (2.2)	$ (2.61)
Earnings per share, Diluted	$ (2.2)	$ (2.61)
Weighted average common shares outstanding, basic	15,995,323	14,475,354
Weighted average common shares outstanding, diluted	15,995,323	14,475,354

XML

STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2021	$ 58,057	$ 14	$ 900,895	$ (842,852)
Balance (in shares) at Dec. 31, 2021		14,408,496
Stock-based compensation	3,528		3,528
Restricted stock awards (in shares)		18,667
Exercise of employee stock options	$ 21		21
Exercise of employee stock options (in shares)	1,750	1,750
Repurchase of common stock	$ (45)			(45)
Repurchase of common stock (in shares)		(1,250)
Issuance of common stock, net of expenses	14,724	$ 2	14,722
Issuance of common stock, net of expenses (in shares)		1,615,248
Cancelled restricted common stock (in shares)		(15,527)
Net loss	(37,730)			(37,730)
Balance at Dec. 31, 2022	38,555	$ 16	919,166	(880,627)
Balance (in shares) at Dec. 31, 2022		16,027,384
Stock-based compensation	2,800		2,800
Issuance of common stock, net of expenses	92		92
Issuance of common stock, net of expenses (in shares)		14,420
Cancelled restricted common stock (in shares)		(29,282)
Net loss	(35,140)			(35,140)
Balance at Dec. 31, 2023	$ 6,307	$ 16	$ 922,058	$ (915,767)
Balance (in shares) at Dec. 31, 2023		16,012,522

XML

STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (35,140)	$ (37,730)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	2,315	2,759
Property and equipment and right-of-use assets impairment	4,803	0
Amortization of financing costs	1,339	981
Stock-based compensation	2,800	3,528
Decrease in the carrying amount of right-of-use assets	286	486
Gain on lease modification and termination	(298)	(133)
Loss on sale of equipment, net	7	7
(Increase) decrease in:
Receivables	3	1,107
Prepaid expenses and other current assets	(1,399)	867
Deposits	42	0
Other non-current assets	500	131
Increase (decrease) in:
Accounts payable	(773)	(25)
Accrued expenses	(3,989)	(668)
Lease liabilities	(610)	(570)
Other non-current liabilities	(28)	28
Net cash used in operating activities	(30,142)	(29,232)
Cash flows from investing activities:
Purchases of property and equipment	(197)	(216)
Proceeds from the disposal of property and equipment	1,543	23
Net cash provided by (used in) investing activities	1,346	(193)
Cash flows from financing activities:
Proceeds from the issuance of common stock	92	14,724
Proceeds from the exercise of stock options	0	21
Repurchase of common stock	0	(45)
Repayment of long-term debt	(18,105)	(8,333)
Debt extinguishment costs	(125)	0
Net cash provided by (used in) financing activities	(18,138)	6,367
Net decrease in cash, cash equivalents and restricted cash	(46,934)	(23,058)
Cash, cash equivalents and restricted cash, beginning of period	52,996	76,054
Cash and cash equivalents, end of period	6,062	52,996
Supplementary disclosure of cash flow information:
Cash paid for interest	2,063	2,171
Reduction in right-of-use assets for modification and termination	1,839	1,790
Amounts included in accrued expenses and accounts payable related to property and equipment	$ 0	$ 91

XML

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ (35,140)	$ (37,730)

XML

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

XML

Organization

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Organization

1.Organization

Alaunos Therapeutics, Inc., which is referred to herein as “Alaunos,” or the “Company,” is a clinical-stage oncology-focused cell therapy company that was historically involved in the development of adoptive TCR therapies, designed to treat multiple solid tumor types in large cancer patient populations with unmet clinical needs. On January 25, 2022, the Company changed its corporate name from ZIOPHARM Oncology, Inc. to Alaunos Therapeutics, Inc. The Company was working to leverage its proprietary, non-viral Sleeping Beauty gene transfer platform and its novel cancer mutation hotspot TCR library to design and manufacture personalized cell therapies that target neoantigens arising from common tumor-related mutations in key oncogenic genes, including KRAS, TP53 and EGFR.

The Company’s operations to date have consisted primarily of conducting research and development and raising capital to fund those efforts.

As of December 31, 2023, there were 16,012,522 shares of common stock outstanding and an additional 1,918,297 shares of common stock reserved for issuance pursuant to outstanding stock options and warrants.

On August 14, 2023, the Company announced a strategic reprioritization of its business and wind down of its TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, the Company has significantly reduced its workforce and continues working to reduce costs in order to extend its cash runway. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. The Company has engaged Cantor Fitzgerald & Co., or Cantor, to act as strategic advisor for this process.

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities and commitments in the normal course of business. The Company follows the guidance of Accounting Standards Codification, or ASC, Topic 205-40, Presentation of Financial Statements - Going Concern, in order to determine whether there is substantial doubt about its ability to continue as a going concern for one year after the date its financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of management's plans that have not been fully implemented as of the date the financial statements are issued. When substantial doubt exists, management evaluates whether the mitigating effect of its plans sufficiently alleviates the substantial doubt about the Company's ability to continue as a going concern. The mitigating effect of management's plans, however, is only considered if both (i) it is probable that the plans will be effectively implemented within one year after the date that the financial statements are issued and (ii) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about the entity's ability to continue as a going concern within one year after the date that the financial statements are issued.

The Company has operated at a loss since its inception in 2003 and has no recurring revenue from operations. The Company anticipates that losses will continue for the foreseeable future. As of December 31, 2023, the Company had approximately $6.1 million of cash and cash equivalents. The Company’s accumulated deficit at December 31, 2023 was approximately $915.8 million. Given its current development plans and cash management efforts, the Company anticipates cash resources will be sufficient to fund operations into the third quarter of 2024. The Company continues to explore strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. The Company’s ability to continue operations after its current cash resources are exhausted depends on future events, including its ability to obtain additional financing or to achieve profitable operations, as to which no assurances can be given, nor are within the Company's control. If adequate additional funds are not available when required, or if the Company is unsuccessful in entering into partnership agreements for further development of its product candidates, management may need to curtail its development efforts and planned operations to conserve cash until sufficient additional capital is raised. There can be no assurances that such a plan would be successful.

Based on the current cash forecast and the Company's dependence on its ability to obtain additional financing to fund its operations after the current resources are exhausted, about which there can be no certainty, management has determined that the Company's present capital resources will not be sufficient to fund its planned operations for at least one year from the issuance date of the financial statements, and substantial doubt as to the Company's ability to continue as a going concern exists. This forecast of cash resources is forward-looking information that involves risks and uncertainties, and the actual amount of expenses could vary materially and adversely as a result of a number of factors.

The Company has elected to make a reclassification in the presentation of the cash flow to show non-cash changes in right-of-use assets and lease liabilities related to modifications and terminations as non-cash for the year ended December 31, 2022 in order to conform presentation to the December 31, 2023 disclosures.

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Financings

12 Months Ended

Dec. 31, 2023

Text Block [Abstract]

Financings

2.Financings

2021 Loan and Security Agreement

On August 6, 2021, the Company entered into a Loan and Security Agreement, or the Loan and Security Agreement, with Silicon Valley Bank and affiliates of Silicon Valley Bank, or collectively, SVB. The Loan and Security Agreement provided for an initial term loan of $25.0 million funded at the closing, or the Term A Tranche, with an additional tranche of $25.0 million available if certain funding and clinical milestones were met by August 31, 2022, or the Term B Tranche.

Effective December 28, 2021, the Company, entered into an amendment to the Loan and Security Agreement, or the First Amendment. The First Amendment extended the interest-only period through August 31, 2022. The First Amendment also eliminated the Term B Tranche, which remained unfunded, leaving only the Term A Tranche, or the SVB Facility. Under the amended Loan and Security Agreement, the SVB Facility was to mature on August 1, 2023. On May 1, 2023, the Company repaid its outstanding debt obligations under the amended Loan and Security Agreement in their entirety.

Refer to Note 4, Debt, for further discussion of the Loan and Security Agreement and the First Amendment.

2022 Equity Distribution Agreement

On August 12, 2022, the Company entered into an Equity Distribution Agreement, or the Equity Distribution Agreement, with Piper Sandler & Co., or Piper Sandler, pursuant to which the Company can offer and sell, from time to time at its sole discretion, shares of its common stock having an aggregate offering price of up to $50.0 million through Piper Sandler as its sales agent in an "at the market offering." Piper Sandler will receive a commission of 3.0% of the gross proceeds of any common stock sold under the Equity Distribution Agreement. During the years ended December 31, 2023 and 2022, there have been no sales of the Company's common stock under the Equity Distribution Agreement.

2022 Public Offering

On November 29, 2022, the Company entered into an underwriting agreement, or the Underwriting Agreement, with Cantor Fitzgerald & Co., or the Underwriter, as the sole underwriter, relating to the issuance and sale in an underwritten offering, or the Offering, of 1,615,248 shares, or the Firm Shares, of the Company’s common stock to the Underwriter at a price of $9.2865 per share.

The net proceeds to the Company from the Offering were $14.7 million (before accounting for the partial exercise of the Underwriter's option as described below) after deducting underwriting discounts and commissions and offering expenses payable by the Company.

Under the terms of the Underwriting Agreement, the Company granted the Underwriter an option, exercisable for 30 days, to purchase up to an additional 242,287 shares of common stock, which we refer to, together with the Firm Shares, as the Shares, at the same price per share as the Firm Shares. On January 5, 2023, the Underwriter partially exercised its option to purchase 14,420 shares of common stock.

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

3.Summary of Significant Accounting Policies

Basis of Presentation

The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, or U.S. GAAP.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management 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 financial statements and the reported amounts of revenue and expenses during the reporting period. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they become known.

The Company’s most significant estimates and judgments used in the preparation of the financial statements are:

•Clinical trial expenses and other research and development expenses;

•Collaboration agreements;

•Fair value measurements of stock-based compensation; and

•Income taxes.

Cash and Cash Equivalents

Cash equivalents consist primarily of demand deposit accounts, certificates of deposit and deposits in short-term U.S. treasury money market mutual funds. Cash equivalents are stated at cost, which approximates fair market value.

Concentrations of Credit Risk

Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents. The Company maintains cash accounts in commercial banks, which may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. The Company believes it is not exposed to any significant credit risk on cash and cash equivalents.

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation and amortization. Expenditures for maintenance and repairs are charged to expense while the costs of significant improvements are capitalized. Depreciation and amortization is calculated on a straight-line basis using the following periods, which represent the estimated useful lives of the assets:

Office and computer equipment	3 years
Software	3 years
Laboratory equipment	5 years
Leasehold improvements	Life of the lease

Costs, including certain design, construction and installation costs related to assets that are under construction and are in the process of being readied for their intended use, are recorded as construction in progress and are not depreciated until such time as the subject asset is placed in service. Repairs and maintenance that do not extend the useful life of the asset are expensed as incurred. Upon sale, retirement or other disposition of these assets, the costs and related accumulated depreciation are removed from the respective accounts and any gain or loss on the disposition is included in the statements of operations.

Long-Lived Assets

Assessments of long-lived assets and the remaining useful lives of such long-lived assets are reviewed for impairment whenever a triggering event occurs or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. An asset, or group of assets, is considered to be impaired when the undiscounted estimated net cash flows expected to be generated by the asset, or group of assets, are less than its carrying amount. The impairment recognized is the amount by which the carrying amount exceeds the fair market value of the impaired asset, or group of assets, based on the present value of the expected future cash flows associated with the use of the asset.

Operating Segments

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the Company’s chief operating decision maker, in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business in one operating segment.

Warrants

The Company assesses whether warrants issued require accounting as derivatives. The Company determined that the warrants were (1) indexed to the Company’s own stock and (2) classified in stockholders’ equity in accordance with Financial Accounting Standards Board, or FASB, ASC Topic 815, Derivatives and Hedging. As such, the Company has concluded the warrants meet the scope exception for determining whether the instruments require accounting as derivatives and should be classified in stockholders’ equity.

Fair Value Measurements

The Company has certain financial assets and liabilities recorded at fair value which have been classified as Level 1, 2 or 3 within the fair value hierarchy as described in the accounting standards for fair value measurements.

•Level 1—Quoted prices in active markets for identical assets or liabilities.

•Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•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.

Assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2023 and 2022 are as follows:

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2023		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	5,744	$	5,744	$	—	$	—

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2022		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	38,058	$	38,058	$	—	$	—

The cash equivalents represent demand deposit accounts and deposits in a short-term United States treasury money market mutual fund quoted in an active market and classified as a Level 1 asset. There have been no changes to the valuation methods during the years ended December 31, 2023 and 2022. The Company had no financial assets or liabilities that were classified as Level 2 or Level 3 during the years ended December 31, 2023 and 2022.

Fair value of non-financial instruments

The Company evaluates assets for impairment whenever events or changes in circumstances indicate that indicators of impairment exist. In those evaluations, the Company compares estimated future undiscounted cash flows generated by each asset (or asset group) to the carrying value of the asset (or asset group) to determine if an impairment charge is required. If the undiscounted cash flows test fails, the Company estimates the fair value of the asset (or asset group) to determine the impairment.

Following the Company’s announced strategic reprioritization on August 14, 2023, the Company determined that changes in the intended use of certain property and equipment represented an indicator of impairment, resulting in an impairment charge of $4.8 million, which was primarily related to leasehold improvements of $3.8 million and lab equipment of $1.0 million.

In addition, the Company determined certain prepaid expense balances to be impaired given the Company’s strategic reprioritization, and therefore, has recorded an impairment charge of $0.2 million related to prepaid expenses and other current assets, which is recorded in research and development expenses within the statement of operations.

On November 9, 2023, the Company executed an agreement to sell laboratory equipment for gross proceeds of $1.5 million and recognized a gain on disposal of equipment of $3 thousand, which is recorded in other income in the statement of operations.

Revenue Recognition from Collaboration Agreements

Revenue for the year ended December 31, 2023 consisted of $5 thousand and for the year ended December 31, 2022 consisted of $2.9 million. For the years ended December 31, 2023 and 2022, the Company recognized revenue through its Collaboration Agreement with Solasia Pharma K.K. primarily due to the achievement of milestones, as further described in Note 9, Commitments and Contingencies.

The Company primarily generates revenue through collaboration arrangements with strategic partners for the development and commercialization of product candidates. The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers, or ASC 606. The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods and/or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that the Company determines are within the

scope of ASC 606, the Company performs the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) each performance obligation is satisfied.

The Company recognizes collaboration revenue under certain of the Company’s license or collaboration agreements that are within the scope of ASC 606. The Company’s contracts with customers typically include promises related to licenses to intellectual property, research and development services and options to purchase additional goods and/or services. If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees.

Contracts that include an option to acquire additional goods and/or services are evaluated to determine if such option provides a material right to the customer that it would not have received without entering into the contract. If so, the option is accounted for as a separate performance obligation. If not, the option is considered a marketing offer which would be accounted for as a separate contract upon the customer’s election.

The terms of the Company’s arrangements with customers typically include the payment of one or more of the following:(i) non-refundable, up-front payment, (ii) development, regulatory and commercial milestone payments, (iii) future options and (iv) royalties on net sales of licensed products. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. The Company measures the transaction price based on the amount of consideration to which it expects to be entitled in exchange for transferring the promised goods and/or services to the customer. The Company utilizes the most likely amount method to estimate the amount of variable consideration, to predict the amount of consideration to which it will be entitled. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. At the inception of each arrangement that includes development and regulatory milestone payments, the Company evaluates whether the associated event is considered probable of achievement and estimates the amount to be included in the transaction price using the most likely amount method. Milestone payments that are not within the control of the Company or the licensee, such as those dependent upon receipt of regulatory approval, are not considered to be probable of achievement until the triggering event occurs. At the end of each reporting period, the Company reevaluates the probability of achievement of each milestone and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment. For arrangements that include sales-based royalties, including milestone payments based upon the achievement of a certain level of product sales, the Company recognizes revenue upon the later of: (i) when the related sales occur or (ii) when the performance obligation to which some or all of the payment has been allocated has been satisfied (or partially satisfied). Consideration that would be received for optional goods and/or services is excluded from the transaction price at contract inception.

The Company allocates the transaction price to each performance obligation identified in the contract on a relative standalone selling price basis. However, certain components of variable consideration are allocated specifically to one or more particular performance obligations in a contract to the extent both of the following criteria are met: (i) the terms of the payment relate specifically to the efforts to satisfy the performance obligation or transfer the distinct good or service and (ii) allocating the variable amount of consideration entirely to the performance obligation or the distinct good or service is consistent with the allocation objective of the standard whereby the amount allocated depicts the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services. The Company develops assumptions that require the use of judgment to determine the standalone selling price for each performance obligation identified in each contract. The key assumptions utilized in determining the standalone selling price for each performance obligation may include forecasted revenue, development timelines, estimated research and development costs, discount rates, likelihood of exercise and probabilities of technical and regulatory success.

Revenue is recognized based on the amount of the transaction price that is allocated to each respective performance obligation when or as the performance obligation is satisfied by transferring a promised good and/or service to the customer. For performance obligations that are satisfied over time, the Company recognizes revenue by measuring the progress toward complete satisfaction of the performance obligation using a single method of measuring progress which depicts the performance in transferring control of the associated goods and/or services to the customer. The Company uses input methods to measure the progress toward the complete satisfaction of performance obligations satisfied over time. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment.

Research and Development Costs

As part of the process of preparing the Company's financial statements, the Company is required to estimate its accrued research and development expenses. This process involves reviewing open contracts and purchase orders, communicating with its personnel and third-party vendors to identify services that have been performed on its behalf and estimating the level of service performed and the associated costs incurred for the services when the Company has not yet been invoiced or otherwise notified of the actual costs. The majority of the Company's service providers invoice the Company in arrears for services performed, on a predetermined schedule or when contractual milestones are met; however, a few require advanced payments. The Company makes estimates of its accrued expenses as of each balance sheet date in its financial statements based on facts and circumstances known to it at that time. Examples of estimated accrued research and development expenses include fees paid to:

•clinical research organizations, or CROs, in connection with performing research services on its behalf and clinical trials;

•investigative sites or other providers in connection with clinical trials;

•vendors in connection with preclinical and clinical development activities; and

•vendors related to product manufacturing, development, and distribution of preclinical and clinical supplies.

The Company bases its expenses related to preclinical studies and clinical trials on its estimates of the services received and efforts expended pursuant to quotes and contracts with CROs that conduct and manage clinical trials on its behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to the Company's vendors will exceed the level of services provided and result in a prepayment of the clinical expense. Payments under some of these contracts depend on factors such as the completion of clinical trial milestones. In accruing service fees, the Company estimates the time period over which services will be performed, enrollment of patients, number of sites activated and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from its estimate, the Company adjusts the accrual or amount of prepaid expense accordingly. Although the Company does not expect its estimates to be materially different from amounts actually incurred, its understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in it reporting amounts that are too high or too low in any particular period.

Income Taxes

Income taxes are accounted for under the liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be recovered or settled. The Company evaluates the realizability of its deferred tax assets and establishes a valuation allowance when it is more likely than not that all or a portion of deferred tax assets will not be realized.

The Company accounts for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors including, but not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. The Company evaluates this tax position on an annual basis. The Company also accrues for potential interest and penalties related to unrecognized tax benefits in income tax expense (Refer to Note 12, Income Taxes).

Accounting for Stock-Based Compensation

Stock-based compensation cost is measured at the grant date based on the estimated fair value of the award and is recognized as expense over the employee’s requisite service period. Stock-based compensation expense is based on the number of awards ultimately expected to vest and is reduced for forfeitures as they occur. Consistent with prior years, the Company uses the Black-Scholes option pricing model, which requires estimates of the expected term option holders will retain their options before exercising them and the estimated volatility of the Company’s common stock price over the expected term.

The Company recognized the full impact of its share-based employee payment plans in the statements of operations for each of the years ended December 31, 2023 and 2022 and did not capitalize any such costs on the balance sheets. The Company recognized $2.5 million of compensation expense related to stock options for the year ended December 31, 2023 and $3.0 million of compensation expense related to stock options for the year ended December 31, 2022. The Company recognized $0.3 million of compensation expense related to restricted stock for the year ended December 31, 2023 and $0.5 million for the year ended December 31, 2022 (refer to Note 13, Stock Option Plan). The total compensation expense relating to vesting of stock options and restricted stock awards for the year ended December 31, 2023 was $2.8 million

and $3.5 million for the year ended December 31, 2022. The following table presents share-based compensation expense included in the Company’s statements of operations:

	Year Ended December 31,
(in thousands)	2023		2022
Research and development		439		868
General and administrative		2,361		2,660
Stock-based compensation expense	$	2,800	$	3,528

The fair value of each stock option is estimated at the date of grant using the Black-Scholes option pricing model. The estimated weighted-average fair value of stock options granted to employees in the year ended December 31, 2023 was approximately $5.58 per share and was approximately $11.54 per share for the year ended December 31, 2022. Assumptions regarding volatility, expected term, dividend yield and risk-free interest rate are required for the Black-Scholes model. The volatility assumption is based on the Company’s historical experience. The risk-free interest rate is based on a U.S. treasury note with a maturity similar to the option award’s expected life. The expected life represents the average period of time that options granted are expected to be outstanding. The Company calculated expected term using the simplified method described in SEC Staff Accounting Bulletin, or SAB, No. 107 and No. 110 as it continues to meet the requirements promulgated in SAB No. 110. The assumptions for volatility, expected life, dividend yield and risk-free interest rate are presented in the table below:

	Year Ended December 31,
	2023	2022
Risk-free interest rate	3.51 – 4.01%	1.63 – 4.21%
Expected life in years	5.06 – 6.25	5.27 – 6.25
Expected volatility	89.69 – 112.12%	74.49 – 88.75%
Expected dividend yield	—%	—%

Reverse Stock Split

On January 31, 2024, the Company filed a Second Amended and Restated Certificate of Incorporation (the “Charter Amendment”) with the Secretary of State of the State of Delaware in order to effect a reverse stock split of the Company’s common stock at a ratio of 1-for-15 (the “Reverse Split”). The Charter Amendment decreased the number of authorized shares of common stock from 520,000,000 to 34,666,667. The Charter Amendment does not affect the par value of the Company’s common stock or change the number of authorized shares or par value of the Company’s preferred stock. The Charter Amendment became effective on January 31, 2024 at 5:00 p.m. Eastern Time, at which time every 15 shares of the Company’s issued and outstanding common stock automatically combined and converted into 1 share of common stock.

No fractional shares were issued in connection with the Reverse Split. Stockholders of record who would otherwise have been entitled to receive fractional shares as a result of the Reverse Split received a cash payment in lieu thereof at a price equal to the fraction to which the stockholder would otherwise be entitled multiplied by the closing sales price per share of the common stock (as adjusted for the Reverse Split) on The Nasdaq Capital Market on January 31, 2024.

All share and per share amounts of common stock, options, warrants, and restricted stock in the accompanying financial statements and notes thereto have been retroactively adjusted for all periods presented to reflect the Reverse Split as if it had occurred at the beginning of the earliest period presented.

Net Loss per Share

Basic net loss per common share is computed by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per share is computed using the weighted-average number of shares of common stock outstanding during the period, plus the dilutive effect of outstanding options and warrants, using the treasury stock method and the average market price of the Company’s common stock during the applicable period, unless their effect on net loss per share is antidilutive. The effect of computing diluted net loss per common share was antidilutive for any potentially issuable shares of common stock from the conversion of stock options, unvested restricted stock and warrants and, as such, have been excluded from the calculation.

The computation of basic and diluted net loss per share consists of the following:

	Year Ended December 31,
	2023			2022
Net loss	$	(35,140	)	$	(37,730	)
Weighted-average common shares outstanding, basic and diluted		15,995,323			14,475,354
Net loss per share, basic and diluted	$	(2.20	)	$	(2.61	)

Certain shares related to some of the Company’s outstanding common stock options, unvested restricted stock and warrants have not been included in the computation of diluted net loss per share for the years ended December 31, 2023 and 2022 as the result would be antidilutive. Such potential common shares on December 31, 2023 and 2022 consist of the following:

	December 31,
	2023		2022
Common stock options		465,898		693,909
Unvested restricted stock		-		62,604
Warrants		1,452,399		1,528,156
		1,918,297		2,284,669

New Accounting Pronouncements

In June 2016, the FASB issued Accounting Standards Update, or ASU, 2016-13, Financial Instruments: Credit Losses (Topic 326) as clarified in ASU 2019-04, ASU 2019-05 and ASU 2020-02. The objective of this standard is to provide information about expected credit losses on financial instruments at each reporting date and to change how other-than-temporary impairments on investment securities are recorded. The Company adopted ASU 2016-13 effective January 1, 2023, with no material impact upon adoption.

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which enhances the disclosures required for operating segments in the Company's annual and interim financial statements. ASU 2023-07 is effective retrospectively for fiscal years beginning after December 15, 2023 and for interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU 2023-09 provide for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. ASU 2023-09 is effective for the Company prospectively to all annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard.

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Debt

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Debt

4. Debt

There were no debt obligations outstanding at December 31, 2023. The carrying values of the Company's debt obligation at December 31, 2022 were as follows:

	December 31,
($ in thousands)	2022
Loan and Security Agreement	$	17,395
Unamortized discount on Loan and Security Agreement		(630	)
Total debt		16,765
Less: long-term debt, current		(16,765	)
Long-term debt	$	—

On August 6, 2021, the Company entered into the Loan and Security Agreement with SVB. The Loan and Security Agreement provided for the funding of the Term A Tranche at the closing, with the Term B Tranche available if certain funding and clinical milestones were met by August 31, 2022. The SVB Facility and related obligations under the Loan and Security Agreement were secured by substantially all of the Company's

properties, rights and assets, except for its intellectual property (which was subject to a negative pledge under the Loan and Security Agreement). In addition, the Loan and Security Agreement contained customary representations, warranties, events of default and covenants.

On December 28, 2021, the Company entered into the First Amendment to the Loan and Security Agreement. The First Amendment eliminated the unfunded Term B Tranche, among other things. The SVB Facility bore interest at a floating rate per annum on outstanding loans, payable monthly, at the greater of (a) 7.75% and (b) the current published U.S. prime rate, plus a margin of 4.5%.

All outstanding obligations under the amended Loan and Security Agreement were due and payable on August 1, 2023. In connection with the payment of all of the Company's outstanding obligations, the Company also owed SVB 5.75% of the original principal amounts borrowed as a final payment, or the Final Payment. Effective March 30, 2023, the Company entered into a Third Amendment to the Loan and Security Agreement, or the Third Amendment. Under the terms of the Third Amendment, the Company was no longer required to maintain all of its operating accounts, depository accounts and excess cash with SVB or one of its affiliates, and was instead only required to maintain a single operating or depository account at Silicon Valley Bank. The Third Amendment also modified the cash collateralization requirement, such that the Company was required to cash collateralize the entire sum of the outstanding principal amount of the SVB Facility, plus an amount equal to the Final Payment, which amount was to be reduced commensurate with each regularly scheduled monthly payment of principal and interest on the SVB Facility.

On May 1, 2023, the Company paid SVB an amount equal to the entire outstanding principal amount under the SVB Facility, all accrued and unpaid interest and the Final Payment. In accordance with the First Amendment, the payment was subject to a prepayment premium of 2.00%. During the year ended December 31, 2023, the Company recorded the remaining amounts associated with the Final Payment of $0.5 million and the prepayment premium of $0.1 million as interest expense within the statement of operations.

In connection with its entry into the Loan and Security Agreement in August 2021, the Company issued to SVB warrants to purchase (i) up to 28,856 shares of the Company’s common stock, in the aggregate, and (ii) up to an additional 28,856 shares of common stock, in the aggregate, in the event the Company achieved certain clinical milestones, in each case at an exercise price per share of $33.30.

In connection with its entry into the First Amendment in December 2021, the Company amended and restated the warrants issued to SVB. As amended and restated, the warrants are for up to 43,308 shares of the Company's common stock, in the aggregate, with an exercise price of $17.40 per share, or the SVB Warrants. The SVB Warrants expire on August 6, 2031.

The issuance costs for the Loan and Security Agreement, including the First Amendment, were approximately $1.2 million and primarily related to the SVB Warrants, which were amortized into interest expense over the term of the loan. Interest expense, including the amortization of issuance costs, was $1.9 million for the year ended December 31, 2023 and $3.2 million for the year ended December 31, 2022.

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Property and Equipment, net

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

Property and Equipment, net

5.Property and Equipment, net

Property and equipment, net, consists of the following:

	December 31,
($ in thousands)	2023			2022
Office and computer equipment	$	15		$	2,183
Software		-			1,291
Leasehold improvements		-			9,561
Laboratory equipment		-			5,232
		15			18,267
Less: accumulated depreciation		(13	)		(9,807	)
Property and equipment, net	$	2		$	8,460

Depreciation expense for the year ended December 31, 2023 was $2.3 million and was $2.8 million for the year ended December 31, 2022. During the year ended December 31, 2023, the Company impaired property and equipment by $4.8 million. Refer to Note 3, Summary of Significant Accounting Policies, for further details.

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Accrued Expenses

12 Months Ended

Dec. 31, 2023

Payables and Accruals [Abstract]

Accrued Expenses

6.Accrued Expenses

Accrued expenses consist of the following:

($ in thousands)	2023		2022
Clinical	$	568	$	2,200
Employee compensation		43		1,160
Professional services		717		534
Preclinical services		-		198
Manufacturing services		12		1,177
Other consulting services		-		16
Other		-		169
	$	1,340	$	5,454

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Related Party Transactions

12 Months Ended

Dec. 31, 2023

Related Party Transactions [Abstract]

Related Party Transactions

7.Related Party Transactions

Joint Venture with TriArm Therapeutics/Eden BioCell

On December 18, 2018, the Company and TriArm Therapeutics, Ltd., or TriArm, launched Eden BioCell, Ltd., or Eden BioCell, as a joint venture to lead commercialization of the Company’s Sleeping Beauty-generated CAR-T therapies in the People’s Republic of China (including Macau and Hong Kong), Taiwan and Korea. The Company licensed to Eden BioCell the rights in Greater China for its third-generation Sleeping Beauty-generated CAR-T therapies targeting the CD19 antigen. Eden BioCell is owned equally by the Company and TriArm and the parties share decision-making authority. TriArm contributed $10.0 million to Eden BioCell and has committed up to an additional $25.0 million to this joint venture. TriArm also managed all clinical development in the territory pursuant to a master services agreement between TriArm and Eden BioCell. James Huang was the founder and serves as managing partner of Panacea Venture, which is an investor in TriArm. Mr. Huang was the Chair of the Company's board of directors until September 22, 2023 and had been a director since July 2020. He also serves as a member of Eden BioCell’s board of directors.

In September 2021, TriArm and Alaunos mutually agreed to dissolve the Eden BioCell joint venture. The joint venture agreement has been terminated and the Eden BioCell entity has been dissolved as of July 2023. Refer to Note 15, Joint Venture, for further details.

Collaboration with Dune Lake Capital

In January 2023, the Company entered into a consulting agreement with Dune Lake Capital, LLC, or Dune Lake Capital, which was founded by Dale Curtis Hogue, Jr., the Company's interim Chief Executive Officer. During the year ended December 31, 2023, the Company recorded expenses of approximately $37 thousand for consulting services performed by Dune Lake Capital with respect to the period from January 2023 to August 2023.

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Leases

12 Months Ended

Dec. 31, 2023

Leases, Operating [Abstract]

Leases

8.Leases

In April 2022, the Company modified its real estate lease agreement executed on December 15, 2020 with MD Anderson for office space in Houston, Texas, which reduced the Company's leased space from 18,111 square feet to 3,228 square feet. As a result, the associated lease liability and right-of-use asset were remeasured to $0.4 million based on revised lease payments. A gain of $0.1 million was recorded on the lease modification during the year ended December 31, 2022.

In June 2022, the Company executed an agreement to sub-sublease 4,772 square feet of subleased office space in Boston. For the year ended December 31, 2023, the Company recognized $43 thousand in lease income, and for the year ended December 31, 2022, the Company recognized $0.1 million in lease income. Lease income is classified within other income on the statement of operations.

On April 19, 2023, the Company terminated its office lease in Boston, Massachusetts, which was set to expire on August 31, 2026. In connection with the termination, the Company also assigned to the landlord its sub-sublease of the Boston office space, which had a term expiring on June 30, 2025 with an option to extend through July 31, 2026. Termination costs for the Boston office lease were $0.2 million. A gain of $0.2 million was recorded on the lease termination during the year ended December 31, 2023.

In August 2023, in accordance with the lease agreement executed on December 15, 2020, the Company notified MD Anderson, as landlord, of its intention to terminate office space of 3,228 square feet in Houston, Texas. As a result, the associated lease liability and right-of-use asset were remeasured to $19 thousand, reflecting the revised lease payments and term end date of November 2023.

On November 1, 2023, the Company and MD Anderson, as landlord, agreed to mutually terminate the leases dated October 15, 2019 and April 7, 2020, which represented office space totaling 14,037 square feet, effective November 15, 2023. As a result, the Company agreed to make a final payment of $0.1 million to the landlord. A gain of $0.1 million was recorded on the lease termination during the year ended December 31, 2023.

The components of lease expense were as follows:

	Year Ended December 31,
($ in thousands)	2023		2022
Operating lease cost	$	428	$	756
Total lease cost	$	428	$	756
Weighted-average remaining lease term (years)		—		4.13
Weighted-average discount rate		—		8.26	%

The Company paid $0.4 million in operating lease costs for the year-ended December 31, 2023. The Company did not recognize new operating lease assets obtained in exchange for operating lease liabilities for the year-ended December 31, 2023. The Company did not have any leases, other than a short-term lease, as of December 31, 2023.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

9.Commitments and Contingencies

Exclusive License Agreement with Precigen

On October 5, 2018, the Company entered into an exclusive license agreement, or License Agreement, with PGEN Therapeutics, or PGEN, a wholly owned subsidiary of Precigen Inc., or Precigen, which was formerly known as Intrexon Corporation. Except where the context otherwise requires, the Company refers to PGEN and Precigen together as Precigen. Pursuant to the terms of the License Agreement, the Company had exclusive, worldwide rights to research, develop and commercialize (i) TCR products designed for neoantigens for the treatment of cancer, (ii) products utilizing Precigen’s RheoSwitch® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products and (iii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) BCMA for the treatment of cancer, subject to certain obligations to pursue such target under the License and Collaboration Agreement effective March 27, 2015 between the Company, Precigen and ARES TRADING S.A., a subsidiary of Merck KGaA, as assigned by Precigen to PGEN. Under the License Agreement, the Company also had exclusive, worldwide rights for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR products for both neoantigens and shared antigens for the treatment of cancer, referred to as TCR Products.

The Company was responsible for all aspects of the research, development and commercialization and was required to use commercially reasonable efforts to develop certain products.

In consideration of the licenses and other rights granted by Precigen, the Company was required to pay Precigen an annual license fee of $0.1 million, reimburse Precigen for certain historical costs, pay Precigen milestones up to an additional $52.5 million for each exclusively licensed program upon the achievement of certain milestones, and pay Precigen tiered royalties up to a maximum royalty amount of $100.0 million in the aggregate. The Company was also obligated to pay Precigen 20% of any sublicensing income received relating to the licensed products. The Company was responsible for all development costs associated with each of the licensed products. For the years ended December 31, 2023 and 2022, the Company paid $0.1 million in annual license fees under this agreement.

Precigen was obligated to pay the Company royalties up to a maximum royalty amount of $100.0 million. No royalty amounts were incurred during the years ended December 31, 2023 and 2022.

On April 3, 2023, the Company entered into the Amended and Restated Exclusive License Agreement with Precigen, or the A&R License Agreement, which restated and amended the License Agreement in full. Under the A&R License Agreement, the Company still has exclusive, worldwide rights to research, develop and commercialize TCR products designed for neoantigens or driver mutations for the treatment of cancer and non-exclusive rights to use non-driver mutation TCRs. The Company further maintains its exclusive, worldwide rights for certain patents relating to the Sleeping Beauty technology to research, develop and commercialize TCR products for both neoantigens and shared antigens for the treatment of cancer, referred to as TCR Products.

The Company remains solely responsible for all aspects of the research, development and commercialization of the exclusively licensed products for the treatment of cancer. The (i) products utilizing Precigen’s RheoSwitch® gene switch, or RTS, for the treatment of cancer, referred to as IL-12 Products and (ii) CAR products directed to (A) CD19 for the treatment of cancer, referred to as CD19 Products, and (B) BCMA for the treatment of cancer, subject to certain obligations to pursue such target under the License and Collaboration Agreement

effective March 27, 2015 between the Company, Precigen and ARES TRADING S.A., a subsidiary of Merck KGaA, as assigned by Precigen to PGEN are no longer exclusively licensed to the Company. The Company is no longer obligated to use commercially reasonable efforts for the exclusively licensed products. The A&R License Agreement further eliminates any royalty or milestone obligations to Precigen, with an annual license fee of $75 thousand due on the anniversary of the A&R License Agreement effective date. Precigen is no longer obligated to pay the Company royalties on the net sales derived from the sale of Precigen's CAR products.

License Agreement and 2015 Research and Development Agreement —The University of Texas MD Anderson Cancer Center

On January 13, 2015, the Company, together with Precigen, entered into a license agreement, or the MD Anderson License with MD Anderson (which Precigen subsequently assigned to PGEN). Pursuant to the MD Anderson License, the Company, together with Precigen, holds an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel CAR T-cell therapies, non-viral gene transfer systems, genetic modification and/or propagation of immune cells and other cellular therapy approaches, Natural Killer, or NK Cells, and TCRs.

On August 17, 2015, the Company, Precigen and MD Anderson entered into the 2015 R&D Agreement to formalize the scope and process for the transfer by MD Anderson, pursuant to the terms of the MD Anderson License, of certain existing research programs and related technology rights, as well as the terms and conditions for future collaborative research and development of new and ongoing research programs. The rights and obligations of Precigen under the 2015 R&D Agreement were assigned to the Company pursuant to the Fourth Amendment to 2015 R&D Agreement which was entered into on September 19, 2019 (the “Fourth Amendment”) with an effective date of October 5, 2018. The activities under the 2015 R&D Agreement are directed by a joint steering committee comprised of two members from the Company and one member from MD Anderson.

As provided under the MD Anderson License, the Company provided funding for research and development activities in support of the research programs under the 2015 R&D Agreement for a period of three years and in an amount of no less than $15.0 million and no greater than $20.0 million per year. On November 14, 2017, the Company entered into an amendment to the 2015 R&D Agreement, extending its term until April 15, 2021. In connection with the execution of the 2019 R&D Agreement described below, on October 22, 2019, the Company amended the 2015 R&D Agreement to extend the term of the 2015 R&D Agreement until December 31, 2026 and to allow cash resources on hand at MD Anderson under the 2015 R&D Agreement to be used for development costs under the 2019 Research and Development Agreement, or the 2019 R&D Agreement, which the Company entered into on October 22, 2019, with MD Anderson, pursuant to which the Company agreed to collaborate with respect to the TCR program. For the year ended December 31, 2023 the Company incurred clinical expenses of $0.1 million from MD Anderson related to the 2015 R&D Agreement, and did not incur clinical costs from MD Anderson related to the 2015 R&D Agreement for the year ended December 31, 2022.

The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder, or (b) the twentieth anniversary of the date of the MD Anderson License; provided, however, that following the expiration of the term of the MD Anderson License, the Company, together with Precigen, shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder. After ten years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if the Company and Precigen are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third-party contract if the Company and Precigen are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by the Company and Precigen, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both the Company and Precigen and may be terminated by the mutual written agreement of the Company, Precigen, and MD Anderson.

2019 Research and Development Agreement—The University of Texas MD Anderson Cancer Center

Under the 2019 R&D Agreement, the Company and MD Anderson will, among other things, collaborate on programs to expand the Company's TCR library and conduct clinical trials. The activities under the 2019 R&D Agreement are directed by a joint steering committee comprised of two members from the Company and one member from MD Anderson.

The Company will own all inventions and intellectual property developed under the 2019 R&D Agreement and the Company will retain all rights to all intellectual property, patentable or not, for oncology products manufactured using non-viral gene transfer technologies under the 2019 R&D Agreement, including the Company's Sleeping Beauty technology. The Company has granted MD Anderson an exclusive license for such intellectual property to develop and commercialize autologous TCR products manufactured using viral gene transfer technologies and

any products outside the field of oncology and a non-exclusive license for allogenic TCR products manufactured using viral-based technologies.

Under the 2019 R&D Agreement, the Company agreed, beginning on January 1, 2021, to reimburse MD Anderson up to a total of $20.0 million for development costs under the 2019 R&D Agreement, after the funds from the 2015 R&D Agreement are exhausted. In addition, the Company will pay MD Anderson royalties on net sales of its TCR products. The Company is required to make performance-based payments upon the successful completion of clinical and regulatory benchmarks relating to its TCR products. The aggregate potential benchmark payments are $36.5 million, of which only $3.0 million will be due prior to the first marketing approval of the Company's TCR products. The royalty rates and benchmark payments owed to MD Anderson may be reduced upon the occurrence of certain events. The Company also agreed to sell its TCR products to MD Anderson at preferential prices and will sell the Company's TCR products in Texas exclusively to MD Anderson for a limited period of time following the first commercial sale of the Company's TCR products. For the years ended December 31, 2023 and 2022, the Company incurred clinical expenses of $0.8 million from MD Anderson related to the 2019 R&D Agreement.

The 2019 R&D Agreement will terminate on December 31, 2026 and either party may terminate the 2019 R&D Agreement following written notice of a material breach. The 2019 R&D Agreement also contains customary provisions related to indemnification obligations, confidentiality and other matters.

In connection with the execution of the 2019 R&D Agreement, on October 22, 2019, the Company issued MD Anderson a warrant to purchase 222,222 shares of the Company's common stock, which is referred to as the MD Anderson Warrant. The MD Anderson Warrant has an initial exercise price of $0.015 per share, expires on December 31, 2026, and vests upon the occurrence of certain clinical milestones. As of December 31, 2023, the milestones have not been met.

License Agreement with the NCI

On May 28, 2019, the Company entered into a patent license agreement, or the Patent License, with the NCI. Pursuant to the Patent License, the Company held an exclusive, worldwide license to certain intellectual property to develop and commercialize patient-derived (autologous), peripheral blood T-cell therapy products engineered by transposon-mediated gene transfer to express TCRs reactive to mutated KRAS, TP53 and EGFR neoantigens. In addition, pursuant to the Patent License, the Company held an exclusive, worldwide license to certain intellectual property for manufacturing technologies to develop and commercialize autologous, peripheral blood T-cell therapy products engineered by non-viral gene transfer to express TCRs, as well as a non-exclusive, worldwide license to certain additional manufacturing technologies. On May 29, 2019, January 8, 2020, September 28, 2020, April 16, 2021, May 4, 2021 and August 13, 2021 the Company amended the Patent License to expand its TCR library to include additional TCRs reactive to mutated KRAS and TP53 neoantigens licensed from the NCI.

The terms of the Patent License required the Company to pay the NCI minimum annual royalties in the amount of $0.3 million, which amount would be reduced to $0.1 million once the aggregate minimum annual royalties paid by the Company equaled $1.5 million.

The Company was also required to make performance-based payments upon successful completion of clinical and regulatory benchmarks relating to the licensed products. Of such payments, the aggregate potential benchmark payments were $4.3 million, of which aggregate payments of $3.0 million would be due only after marketing approval in the United States or in Europe, Japan, Australia, China or India. The first benchmark payment of $0.1 million was paid during the year ended December 31, 2022 upon the initiation of the Company's TCR-T Library Phase 1/2 Trial, which was a qualifying Phase 1 clinical trial under the terms of the Patent License.

In addition, the Company was required to pay the NCI one-time benchmark payments following aggregate net sales of licensed products at certain aggregate net sales ranging from $250.0 million to $1.0 billion. The aggregate potential amount of these benchmark payments was $12.0 million. The Company was also required to pay the NCI royalties on net sales of products covered by the Patent License at rates in the low to mid-single digits depending upon the technology included in a licensed product. To the extent the Company entered into a sublicensing agreement relating to a licensed product, the Company would be required to pay the NCI a percentage of all consideration received from a sublicensee, which percentage would decrease based on the stage of development of the licensed product at the time of the sublicense.

The Patent License was to expire upon expiration of the last patent contained in the licensed patent rights, unless terminated earlier. The NCI could terminate or modify the Patent License in the event of a material breach, including if the Company did not meet certain milestones by certain dates, or upon certain insolvency events that remain uncured following the date that is 90 days following written notice of such breach or insolvency event. The Company could terminate the Patent License, or any portion thereof, in the Company's sole discretion at any time upon 60 days’ written notice to the NCI. In addition, the NCI had the right to: (i) require the Company to sublicense the rights to the product candidates covered by the Patent License upon certain conditions, including if the Company was not reasonably satisfying required health and safety needs and (ii) terminate or modify the Patent License, including if the Company was not satisfying requirements for public use as specified by federal regulations. On October 27, 2023, the Company provided the NCI the requisite notice of its intent to terminate the Patent

License, effective December 26, 2023. The Company discovered multiple proprietary TCRs targeting driver mutations through its hunTR TCR discovery platform, including many of the same KRAS and TP53 mutations licensed from the NCI.

For the year ended December 31, 2023 the Company incurred $0.4 million of expenses and incurred $0.7 million of expenses for the year ended December 31, 2022.

Cooperative Research and Development Agreement (CRADA) with the NCI

On January 9, 2017, the Company entered into a Cooperative Research and Development Agreement, or the CRADA, with the NCI. The purpose of this collaboration was to advance a personalized TCR-T approach for the treatment of solid tumors. Using the Company's Sleeping Beauty technology, the NCI would analyze a patient’s own cancer cells, identify their unique neoantigens and TCRs reactive against those neoantigens and then use the Company's Sleeping Beauty technology to transpose one or more TCRs into T cells for re-infusion. Research conducted under the CRADA was under the direction of Steven A. Rosenberg, M.D., Ph.D., Chief of the Surgery Branch at the NCI, in collaboration with the Company's researchers.

The Company was responsible for providing the NCI with the test materials necessary for them to conduct their studies, and eventually, clinical trials pursuant to the CRADA. Inventions, data and materials discovered or produced in connection with performance of the research plan under the CRADA would have remained the sole property of the party who produced the discovery. The parties would have jointly owned all inventions jointly discovered under the research plan. The owner of any invention under the CRADA would have made the decision to file a patent covering the invention, or in the case of a jointly owned invention, the Company would have the first opportunity to file a patent covering the invention. If the Company failed to provide timely notice of its decision to the NCI or decided not to file a patent covering the joint invention, the NCI had the right to make the filing. For any invention solely owned by the NCI or jointly made by the NCI and the Company for which a patent application was filed, the U.S. Public Health service granted the Company an exclusive option to elect an exclusive or non-exclusive commercialization license. For inventions owned solely by the NCI or jointly owned by the NCI and the Company, which were licensed according to the terms described above, the Company agreed to grant to the U.S. government a non-exclusive, non-transferable, irrevocable and paid up license to practice the invention or have the invention practiced on its behalf throughout the world. The Company was also required to grant the U.S. government a non-exclusive, non-transferable, irrevocable and paid up license to practice the invention or have the invention practiced on its behalf throughout the world for any of the Company's solely owned inventions. The agreement could be terminated by any of the parties upon 60 days' prior written consent.

In February 2019, the Company extended the CRADA with the NCI until January 9, 2022, committing an additional $5.0 million to this program; however, for the third and fourth quarters of 2021, the Company was not required to make payments toward the program as agreed with the NCI. In March 2022, the Company entered into an amendment to the CRADA that is retroactive, effective January 9, 2022 to extend the term of the CRADA until January 9, 2023. In June 2022, the Company entered into the Fourth Amendment to the CRADA, or the CRADA Fourth Amendment, which, among other things, extended the term of the CRADA until January 9, 2025. In connection with the CRADA Fourth Amendment, the Company agreed to contribute $1.0 million per year, payable on a quarterly basis, beginning in the first quarter of 2023. The Company recorded expenses of $0.5 million for the year ended December 31, 2023, compared to $0 for the year ended December 31, 2022.

On August 14, 2023, the Company announced that it had provided the requisite notice to terminate the CRADA, pursuant to its terms, effective October 13, 2023, in light of the Company’s exploration of strategic alternatives.

Patent and Technology License Agreement—The University of Texas MD Anderson Cancer Center and the Texas A&M University System

On August 24, 2004, the Company entered into a patent and technology license agreement with MD Anderson and the Texas A&M University System, which the Company refers to, collectively, as the Licensors. Under this agreement, the Company was granted an exclusive, worldwide license to rights (including rights to U.S. and foreign patent and patent applications and related improvements and know-how) for the manufacture and commercialization of two classes of organic arsenicals (water- and lipid-based) for human and animal use. The class of water-based organic arsenicals includes darinaparsin.

Under the terms of the agreement, the Company may be required to make additional payments to the Licensors upon achievement of certain milestones in varying amounts which, on a cumulative basis could total up to an additional $4.5 million. In addition, the Licensors are entitled to receive royalty payments on sales from a licensed product and will also be entitled to receive a portion of any fees that the Company may receive from a possible sublicense under certain circumstances. During the year ended December 31, 2023, the Company did not incur any milestone expenses under this agreement, and the Company incurred $1 thousand in royalty expenses on sales under this agreement during the year ended December 31, 2023. During the year ended December 31, 2022, $2.5 million was incurred as a one-time milestone payment under

the terms of the agreement, and the Company incurred $2 thousand in royalty expenses on sales under this agreement during the year ended December 31, 2022.

Collaboration Agreement with Solasia Pharma K.K.

On March 7, 2011, the Company entered into a License and Collaboration Agreement with Solasia Pharma K. K., or Solasia, which was amended on July 31, 2014 to include an exclusive worldwide license and amended on October 14, 2021 to revise certain payment schedule details, or, as so amended, the Solasia License and Collaboration Agreement. Pursuant to the Solasia License and Collaboration Agreement, the Company granted Solasia an exclusive license to develop and commercialize darinaparsin in both intravenous and oral forms and related organic arsenic molecules, in all indications for human use.

As consideration for the license, the Company is eligible to receive from Solasia development- and sales-based milestones, a royalty on net sales of darinaparsin, once commercialized, and a percentage of any sublicense revenue generated by Solasia. Solasia will be responsible for all costs related to the development, manufacturing and commercialization of darinaparsin. The Company’s licensors, as defined in the Solasia License and Collaboration Agreement, will receive a portion of all milestone and royalty payments made by Solasia to the Company in accordance with the terms of the Solasia License and Collaboration Agreement with the licensors, as described above.

In June 2022, Solasia announced that darinaparsin had been approved from relapsed or refractory Peripheral T-Cell Lymphoma by the Ministry of Health, Labor and Welfare in Japan. During the year ended December 31, 2023, the Company did not earn collaboration revenue and earned $5 thousand in royalty revenues on net sales under the Solasia License and Collaboration Agreement. During the year ended December 31, 2022, the Company earned $2.9 million of collaboration revenue under the Solasia License and Collaboration Agreement primarily related to Solasia's achievement of certain sales-based milestones in Japan, and did not earn royalty revenues on net sales under the agreement.

KBI Biopharma Litigation

On March 17, 2023, KBI Biopharma, Inc., or KBI, filed a complaint against the Company in the District Court of Harris County, Texas, 165th Judicial District, asserting breach of an Amended and Restated Master Services Agreement between the Company and KBI relating to the development of an autologous gene modified T-cell therapy product, or the KBI Agreement. KBI was primarily seeking unspecified monetary damages in excess of $3.2 million. On May 1, 2023, the Company filed an answer generally denying all of KBI’s allegations and asserting affirmative and other defenses as well as counterclaims for breach of the KBI Agreement and conversion. On October 20, 2023, the Company entered into an agreement with KBI to settle all claims asserted by KBI against the Company and the Company's counterclaims against KBI at issue in the litigation for $1.0 million.

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Warrants

12 Months Ended

Dec. 31, 2023

Warrants Disclosure [Abstract]

Warrants

10.Warrants

In connection with the Company’s November 2018 private placement that provided net proceeds of approximately $47.1 million, the Company issued warrants to purchase an aggregate of 1,262,626 shares of common stock, which became exercisable six months after the closing of the private placement, or the November 2018 Warrants. The November 2018 Warrants had an exercise price of $45.15 per share and have a five-year term. The fair value of the November 2018 Warrants was estimated at $18.4 million using a Black-Scholes model with the following assumptions: expected volatility of 71%, risk free interest rate of 2.99%, expected life of five years and no dividends.

On July 26, 2019 and September 12, 2019, the Company entered into agreements with existing investors whereby the investors exercised the November 2018 Warrants for an aggregate of 1,186,869 shares of common stock, at an exercise price of $45.15 per share. Proceeds from the warrant exercise after deducting placement agent fees and other related expenses of $1.1 million were approximately $52.5 million.

The Company issued participating investors new warrants to purchase up to 1,186,869 additional shares of common stock (the "2019 Warrants") as consideration for the warrant holders to exercise their November 2018 Warrants. The 2019 Warrants will expire on the fifth anniversary of the initial exercise date and have an exercise price of $105.00. The 2019 Warrants were valued using a Black-Scholes valuation model and resulted in a $60.8 million non-cash charge in the Company’s statement of operations in 2019.

On October 22, 2019, the Company entered into the 2019 R&D Agreement with MD Anderson. In connection with the execution of the 2019 R&D Agreement, the Company issued the MD Anderson Warrant to purchase 222,222 shares of common stock. The MD Anderson Warrant has an initial exercise price of $0.015 per share and grant date fair value of $14.5 million. The MD Anderson Warrant expires on December 31, 2026 and vests upon the occurrence of certain clinical milestones. The Company will recognize expense on the MD Anderson Warrant in the same manner as if the Company paid cash for services to be rendered. For the years ended December 31, 2023 and 2022, the Company did not recognize any expense related to the MD Anderson Warrant as the clinical milestones have not been achieved.

On August 6, 2021, the Company entered into the Loan and Security Agreement with SVB. Refer to Note 4, Debt. In connection with the Loan and Security Agreement, the Company issued SVB warrants to purchase 28,856 shares of common stock with an exercise price of $33.30 per share. The warrants have a ten-year life and were fully vested upon issuance. The fair value of the warrants was estimated at $0.8 million using a Black-Scholes model with the following assumptions: expected volatility of 79%, risk free interest rate of 1.31%, expected life of ten years and no dividends. On December 28, 2021, the Company entered into the First Amendment, as described in Note 4, Debt, in connection with which, the original warrants issued to SVB were amended and restated. As amended and restated, the SVB Warrants are for up to 43,308 shares of common stock, in the aggregate, with an exercise price of $17.40 per share. The SVB Warrants expire on August 6, 2031 and were fully vested upon issuance. As of December 31, 2023, none of the SVB Warrants have been exercised.

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Restructuring

12 Months Ended

Dec. 31, 2023

Restructuring and Related Activities [Abstract]

Restructuring

11.Restructuring

On August 14, 2023, the Company announced a strategic reprioritization of its business and wind down of its TCR-T Library Phase 1/2 Trial. In connection with the reprioritization, the Company reduced its workforce during the third and fourth quarters of 2023. Concurrently, the Company began considering certain strategic alternatives, including, but not limited to, an acquisition, merger, reverse merger, sale of assets, strategic partnerships, capital raises or other transactions. During the year ended December 31, 2023, the Company recorded termination benefits of $1.3 million, recorded in restructuring costs within the statement of operations. The termination benefits were fully paid as of December 31, 2023.

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Income Taxes

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Income Taxes

12.Income Taxes

There is no provision for income taxes because the Company has incurred operating losses since inception. The reported amounts of income tax expense for the years ended December 31, 2023 and 2022 differ from the amounts that would result from applying domestic federal statutory tax rates to pretax losses primarily because of the changes in the valuation allowance. Significant components of the Company’s deferred tax assets at December 31, 2023 and 2022 are as follows:

	December 31,
(in thousands)	2023			2022
Deferred tax assets:
Net operating loss carryforwards	$	148,009		$	171,070
Start-up and pre-clinical studies		13,754			17,204
Research and development credit carryforwards		39,838			40,116
Stock-based compensation		681			698
Capitalized acquisition costs		1,570			2,180
Lease liability		—			618
Depreciation		1			239
Capitalized research expenses		7,176			5,156
Other		2			27
		211,031			237,308
Less valuation allowance		(211,031	)		(236,827	)
Total deferred tax assets		—			481
Right-of-use asset		—			(481	)
Total deferred tax liabilities	$	—		$	(481	)
Net deferred taxes	$	—		$	—

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. At December 31, 2023, the Company has aggregate net operating loss carryforwards for federal tax purposes of approximately $704.9 million, of which approximately $341.7 million expire at various dates through December 31, 2037 and approximately $363.2 million can be carried forward indefinitely. The Company is reducing its approximately $497.9 million of state net operating loss carryforwards to $0 as these state net operating loss carryforwards all related to Massachusetts filings and, as of December 31, 2023 the Company no longer had any employees or property in Massachusetts and, as a result, the Company will no longer have income tax nexus in Massachusetts or an income tax filing obligation after the year ended December 31, 2023. Additionally, the Company has approximately $39.8 million of federal and state research and development credits at December 31, 2023, expiring in varying amounts through 2043, which may be available to reduce future taxes. The Company has reduced its Massachusetts credits carryforward to $0.

The Company has provided a valuation allowance for the full amount of its net deferred tax assets since it is more likely than not that these future benefits will not be realized. However, these deferred tax assets may be available to offset future income tax liabilities and expenses. The valuation allowance decreased by $25.8 million in 2023 due primarily to the reduction of Massachusetts net operating loss carryforwards and Massachusetts research and development credits.

Income taxes using the federal statutory income tax rate differ from the Company’s effective tax rate primarily due to non-deductible expenses related to the Company’s issuance of warrants along with the change in the valuation allowance on deferred tax assets.

A reconciliation of income tax expense (benefit) at the statutory federal income tax rate and income taxes as reflected in the financial statements is as follows:

	Year Ended December 31,
(in thousands)	2023			2022
Federal income tax at statutory rates		21	%		21	%
State income tax, net of federal tax benefit		(92	)%		3	%
Research and development credits		2	%		2	%
Research and development true-up		(1	)%		(2	)%
Stock-based compensation	—%				(1	)%
Federal/state rate change		(3	)%		(5	)%
Change in valuation allowance		73	%		(18	)%
Effective tax rate		—	%		—	%

The Company adopted ASC 740, Accounting for Uncertain Tax Positions on January 1, 2007. ASC 740 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, “Accounting for Income Taxes.” ASC 740 prescribes a recognition threshold and measurement of a tax position taken or expected to be taken in a tax return. The Company did not establish any additional reserves for uncertain tax liabilities upon adoption of ASC 740. There were no adjustments to its uncertain tax positions in the years ended December 31, 2023 and 2022.

The Company has not recognized any interest and penalties in the statements of operations because of the Company’s net operating losses and tax credits that are available to be carried forward. When necessary, the Company will account for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes. The Company does not expect the amounts of unrecognized benefits will change significantly within the next twelve months.

The Company is currently open to audit under the statute of limitations by the Internal Revenue Service and state jurisdictions for the years ended December 31, 1999 through 2023 to the extent net operating losses continue to be carried forward to 2023.

Beginning in 2022, the Tax Cuts and Jobs Act of 2017, or the Tax Act, eliminated the option to deduct research and development expenditures immediately in the year incurred and requires taxpayers to capitalize and amortize them over five years pursuant to IRC Section 174. The mandatory capitalization requirement had no impact to the overall deferred tax assets due to the Company's loss position and full valuation allowance.

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Stock Option Plan

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Stock Option Plan

13.Stock Option Plan

The Company adopted the 2012 Equity Incentive Plan, or the 2012 Plan, in May 2012. Including subsequent increases, the Company had reserved 933,333 shares for issuance. On December 31, 2023, there were 65,728 shares reserved for issuance and no shares available for future grant.

The Company adopted the 2020 Equity Incentive Plan, or the 2020 Plan, in June 2020. The Company reserved 1,400,000 shares for issuance plus a carryover of 71,085 shares from the 2012 Plan for a total of 1,471,085 shares. In addition, returning shares from the 2012 Plan are available for issuance under the 2020 Plan. As of December 31, 2023, there were 400,167 shares reserved for issuance and 1,302,411 shares available for future grant.

Stock options generally vest ratably in either quarterly or annual installments over three or four years, commencing on the first anniversary of the grant date and have contractual terms of ten years. Stock options to directors generally vest ratably over one or two years and have contractual terms of ten years. Stock options are valued using the Black-Scholes option pricing model and compensation is recognized based on such fair value over the period of vesting on a straight-line basis.

There were no proceeds from option exercises during the year ended December 31, 2023 as compared to $21 thousand during the year ended December 31, 2022. The intrinsic value of these options amounted to $26 thousand for the year ended December 31, 2022.

Stock option activity under the Company's stock options plans for the years ending December 31, 2023 and 2022 were as follows:

(in thousands, except share and per share data)	Number of Shares			Weighted- Average Exercise Price		Weighted- Average Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding, December 31, 2021		711,058		$	43.05
Granted		313,167			16.14
Exercised		(1,750	)		12.00
Cancelled		(328,566	)		50.10
Outstanding, December 31, 2022		693,909		$	27.60
Granted		259,122			7.35
Cancelled		(487,133	)		17.70
Outstanding, December 31, 2023		465,898		$	26.85		7.81	$	—
Options exercisable, December 31, 2023		415,376		$	28.80		7.64	$	—
Options available for future grant, December 31, 2023		1,302,411

On December 31, 2023, total unrecognized compensation costs related to non-vested stock options outstanding amounted to $0.4 million, which is expected to be recognized over a weighted-average period of 1.53 years.

Restricted Stock

For the year ended December 31, 2023 the Company did not issue shares of restricted stock and issued 18,667 in the year ended December 31, 2022 to directors. There were no repurchases by the Company for the year ended December 31, 2023. During the year ended December 31, 2022, the Company repurchased 1,250 shares at a price of $36.15 per share to cover payroll taxes for one employee exercise, which is in accordance with the original terms of the award.

A summary of the status of restricted stock as of December 31, 2023 and 2022 is as follows:

	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested, December 31, 2021		79,905		$	31.54
Granted		18,667			12.30
Vested		(20,441	)		34.21
Cancelled		(15,527	)		47.23
Unvested, December 31, 2022		62,604		$	21.04
Vested		(33,322	)		17.94
Cancelled		(29,282	)		24.60
Unvested, December 31, 2023		—		$	—

As of December 31, 2023, there was no unrecognized stock-based compensation expense related to non-vested restricted stock arrangements.

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Employee Benefit Plan

12 Months Ended

Dec. 31, 2023

Postemployment Benefits [Abstract]

Employee Benefit Plan

14.Employee Benefit Plan

The Company sponsors a qualified 401(k) retirement plan under which employees are allowed to contribute certain percentages of their pay, up to the maximum allowed under Section 401(k) of the IRC, or the 401(k) Plan. The Company may make contributions to the 401(k) Plan at its discretion. The Company contributed approximately $0.2 million to the 401(k) Plan during the year ended December 31, 2023 and $0.5 million during the year ended December 31, 2022.

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Joint Venture

12 Months Ended

Dec. 31, 2023

Equity Method Investments and Joint Ventures [Abstract]

Joint Venture

15.Joint Venture

On December 18, 2018, the Company entered into a Framework Agreement with TriArm whereby the parties agreed to launch Eden BioCell, to lead clinical development and commercialization of certain Sleeping Beauty-generated CAR-T therapies as set forth in a separate license agreement.

On January 3, 2019, Eden BioCell was incorporated in Hong Kong as a private company. Eden BioCell, the Company and TriArm entered into a Share Subscription Agreement on January 23, 2019, where the Company and TriArm agreed to contribute certain intellectual property, services and cash (only with respect to TriArm) to Eden BioCell to subscribe for a certain number of newly issued ordinary shares in the share capital of Eden BioCell.

The closing of the transaction occurred on July 5, 2019. The Framework Agreement and Share Subscription Agreements were each respectively amended to be effective as of this date. Upon consummation of the joint venture, Eden BioCell and the Company also entered into a license agreement, pursuant to which the Company licensed the rights to Eden BioCell for third generation Sleeping Beauty-generated CAR-T therapies targeting the CD19 antigen for the territory of China (including Macau and Hong Kong), Taiwan and Korea. TriArm and the Company each received a 50% equity interest in the joint venture in exchange for their contributions to Eden BioCell.

The Company determined that Eden BioCell was considered a variable interest entity, or VIE, and concluded that it was not the primary beneficiary of the VIE as it did not have the power to direct the activities of the VIE. As a result, the Company accounted for the equity interest in Eden BioCell under the equity method of accounting as it had the ability to exercise significant influence.

In September 2021, TriArm and the Company mutually agreed to dissolve the joint venture, which has now been terminated. The Eden BioCell entity has been dissolved as of July 2023.

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Subsequent Events

12 Months Ended

Dec. 31, 2023

Subsequent Events [Abstract]

Subsequent Events

16.Subsequent Events

The Company evaluated all events and transactions that occurred after the balance sheet date through the date of this Annual Report on Form 10-K. Other than as described in the notes to the financial statements, the Company did not have any material subsequent events that impacted its financial statements or disclosures aside from the following.

On January 20, 2024, the Board of Directors appointed Dale Curtis Hogue, Jr. as Interim Chief Executive Officer of the Company, effective immediately. On January 21, 2024, the Company entered into an employment agreement with Mr. Hogue, under which he will receive an annual base salary of $250 thousand. Mr. Hogue was awarded 40,000 shares of common stock of the Company with an exercise price of $1.80.

On February 15, 2024, Michael Wong gave notice of his resignation as Vice President, Finance, effective February 23, 2024. On February 22, 2024, the Company and Ferdinand Groenewald entered into a consulting agreement, or the Consulting Agreement, effective February 22, 2024, pursuant to which Mr. Groenewald will lead accounting and financial reporting activities of the Company. Mr. Groenewald will serve as the Company’s Vice President, Finance. The Consulting Agreement will continue indefinitely until terminated by either party upon 30 days’ advance notice. The Consulting Agreement provides for compensation at a fixed rate of $15 thousand per month and reimbursement by the Company for any usual and customary business expenses incurred by Mr. Groenewald in connection with performing services pursuant to the Consulting Agreement. In addition, the Consulting Agreement provides for the Company to indemnify Mr. Groenewald on terms customary for officers.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, or U.S. GAAP.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management 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 financial statements and the reported amounts of revenue and expenses during the reporting period. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they become known.

The Company’s most significant estimates and judgments used in the preparation of the financial statements are:

•Clinical trial expenses and other research and development expenses;

•Collaboration agreements;

•Fair value measurements of stock-based compensation; and

•Income taxes.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash equivalents consist primarily of demand deposit accounts, certificates of deposit and deposits in short-term U.S. treasury money market mutual funds. Cash equivalents are stated at cost, which approximates fair market value.

Concentrations of Credit Risk

Concentrations of Credit Risk

Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents. The Company maintains cash accounts in commercial banks, which may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. The Company believes it is not exposed to any significant credit risk on cash and cash equivalents.

Property and Equipment

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation and amortization. Expenditures for maintenance and repairs are charged to expense while the costs of significant improvements are capitalized. Depreciation and amortization is calculated on a straight-line basis using the following periods, which represent the estimated useful lives of the assets:

Office and computer equipment	3 years
Software	3 years
Laboratory equipment	5 years
Leasehold improvements	Life of the lease

Costs, including certain design, construction and installation costs related to assets that are under construction and are in the process of being readied for their intended use, are recorded as construction in progress and are not depreciated until such time as the subject asset is placed in service. Repairs and maintenance that do not extend the useful life of the asset are expensed as incurred. Upon sale, retirement or other disposition of these assets, the costs and related accumulated depreciation are removed from the respective accounts and any gain or loss on the disposition is included in the statements of operations.

Long-Lived Assets

Long-Lived Assets

Assessments of long-lived assets and the remaining useful lives of such long-lived assets are reviewed for impairment whenever a triggering event occurs or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. An asset, or group of assets, is considered to be impaired when the undiscounted estimated net cash flows expected to be generated by the asset, or group of assets, are less than its carrying amount. The impairment recognized is the amount by which the carrying amount exceeds the fair market value of the impaired asset, or group of assets, based on the present value of the expected future cash flows associated with the use of the asset.

Operating Segments

Operating Segments

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the Company’s chief operating decision maker, in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business in one operating segment.

Warrants

Warrants

The Company assesses whether warrants issued require accounting as derivatives. The Company determined that the warrants were (1) indexed to the Company’s own stock and (2) classified in stockholders’ equity in accordance with Financial Accounting Standards Board, or FASB, ASC Topic 815, Derivatives and Hedging. As such, the Company has concluded the warrants meet the scope exception for determining whether the instruments require accounting as derivatives and should be classified in stockholders’ equity.

Fair Value Measurements

Fair Value Measurements

The Company has certain financial assets and liabilities recorded at fair value which have been classified as Level 1, 2 or 3 within the fair value hierarchy as described in the accounting standards for fair value measurements.

•Level 1—Quoted prices in active markets for identical assets or liabilities.

•Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•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.

Assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2023 and 2022 are as follows:

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2023		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	5,744	$	5,744	$	—	$	—

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2022		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	38,058	$	38,058	$	—	$	—

The cash equivalents represent demand deposit accounts and deposits in a short-term United States treasury money market mutual fund quoted in an active market and classified as a Level 1 asset. There have been no changes to the valuation methods during the years ended December 31, 2023 and 2022. The Company had no financial assets or liabilities that were classified as Level 2 or Level 3 during the years ended December 31, 2023 and 2022.

Fair value of non-financial instruments

The Company evaluates assets for impairment whenever events or changes in circumstances indicate that indicators of impairment exist. In those evaluations, the Company compares estimated future undiscounted cash flows generated by each asset (or asset group) to the carrying value of the asset (or asset group) to determine if an impairment charge is required. If the undiscounted cash flows test fails, the Company estimates the fair value of the asset (or asset group) to determine the impairment.

Following the Company’s announced strategic reprioritization on August 14, 2023, the Company determined that changes in the intended use of certain property and equipment represented an indicator of impairment, resulting in an impairment charge of $4.8 million, which was primarily related to leasehold improvements of $3.8 million and lab equipment of $1.0 million.

In addition, the Company determined certain prepaid expense balances to be impaired given the Company’s strategic reprioritization, and therefore, has recorded an impairment charge of $0.2 million related to prepaid expenses and other current assets, which is recorded in research and development expenses within the statement of operations.

On November 9, 2023, the Company executed an agreement to sell laboratory equipment for gross proceeds of $1.5 million and recognized a gain on disposal of equipment of $3 thousand, which is recorded in other income in the statement of operations.

Revenue Recognition from Collaboration Agreements

Revenue Recognition from Collaboration Agreements

Revenue for the year ended December 31, 2023 consisted of $5 thousand and for the year ended December 31, 2022 consisted of $2.9 million. For the years ended December 31, 2023 and 2022, the Company recognized revenue through its Collaboration Agreement with Solasia Pharma K.K. primarily due to the achievement of milestones, as further described in Note 9, Commitments and Contingencies.

The Company primarily generates revenue through collaboration arrangements with strategic partners for the development and commercialization of product candidates. The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers, or ASC 606. The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods and/or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that the Company determines are within the

scope of ASC 606, the Company performs the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) each performance obligation is satisfied.

The Company recognizes collaboration revenue under certain of the Company’s license or collaboration agreements that are within the scope of ASC 606. The Company’s contracts with customers typically include promises related to licenses to intellectual property, research and development services and options to purchase additional goods and/or services. If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees.

Contracts that include an option to acquire additional goods and/or services are evaluated to determine if such option provides a material right to the customer that it would not have received without entering into the contract. If so, the option is accounted for as a separate performance obligation. If not, the option is considered a marketing offer which would be accounted for as a separate contract upon the customer’s election.

The terms of the Company’s arrangements with customers typically include the payment of one or more of the following:(i) non-refundable, up-front payment, (ii) development, regulatory and commercial milestone payments, (iii) future options and (iv) royalties on net sales of licensed products. Accordingly, the transaction price is generally comprised of a fixed fee due at contract inception and variable consideration in the form of milestone payments due upon the achievement of specified events and tiered royalties earned when customers recognize net sales of licensed products. The Company measures the transaction price based on the amount of consideration to which it expects to be entitled in exchange for transferring the promised goods and/or services to the customer. The Company utilizes the most likely amount method to estimate the amount of variable consideration, to predict the amount of consideration to which it will be entitled. Amounts of variable consideration are included in the transaction price to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. At the inception of each arrangement that includes development and regulatory milestone payments, the Company evaluates whether the associated event is considered probable of achievement and estimates the amount to be included in the transaction price using the most likely amount method. Milestone payments that are not within the control of the Company or the licensee, such as those dependent upon receipt of regulatory approval, are not considered to be probable of achievement until the triggering event occurs. At the end of each reporting period, the Company reevaluates the probability of achievement of each milestone and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment. For arrangements that include sales-based royalties, including milestone payments based upon the achievement of a certain level of product sales, the Company recognizes revenue upon the later of: (i) when the related sales occur or (ii) when the performance obligation to which some or all of the payment has been allocated has been satisfied (or partially satisfied). Consideration that would be received for optional goods and/or services is excluded from the transaction price at contract inception.

The Company allocates the transaction price to each performance obligation identified in the contract on a relative standalone selling price basis. However, certain components of variable consideration are allocated specifically to one or more particular performance obligations in a contract to the extent both of the following criteria are met: (i) the terms of the payment relate specifically to the efforts to satisfy the performance obligation or transfer the distinct good or service and (ii) allocating the variable amount of consideration entirely to the performance obligation or the distinct good or service is consistent with the allocation objective of the standard whereby the amount allocated depicts the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services. The Company develops assumptions that require the use of judgment to determine the standalone selling price for each performance obligation identified in each contract. The key assumptions utilized in determining the standalone selling price for each performance obligation may include forecasted revenue, development timelines, estimated research and development costs, discount rates, likelihood of exercise and probabilities of technical and regulatory success.

Revenue is recognized based on the amount of the transaction price that is allocated to each respective performance obligation when or as the performance obligation is satisfied by transferring a promised good and/or service to the customer. For performance obligations that are satisfied over time, the Company recognizes revenue by measuring the progress toward complete satisfaction of the performance obligation using a single method of measuring progress which depicts the performance in transferring control of the associated goods and/or services to the customer. The Company uses input methods to measure the progress toward the complete satisfaction of performance obligations satisfied over time. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue and net loss in the period of adjustment.

Research and Development Costs

Research and Development Costs

As part of the process of preparing the Company's financial statements, the Company is required to estimate its accrued research and development expenses. This process involves reviewing open contracts and purchase orders, communicating with its personnel and third-party vendors to identify services that have been performed on its behalf and estimating the level of service performed and the associated costs incurred for the services when the Company has not yet been invoiced or otherwise notified of the actual costs. The majority of the Company's service providers invoice the Company in arrears for services performed, on a predetermined schedule or when contractual milestones are met; however, a few require advanced payments. The Company makes estimates of its accrued expenses as of each balance sheet date in its financial statements based on facts and circumstances known to it at that time. Examples of estimated accrued research and development expenses include fees paid to:

•clinical research organizations, or CROs, in connection with performing research services on its behalf and clinical trials;

•investigative sites or other providers in connection with clinical trials;

•vendors in connection with preclinical and clinical development activities; and

•vendors related to product manufacturing, development, and distribution of preclinical and clinical supplies.

The Company bases its expenses related to preclinical studies and clinical trials on its estimates of the services received and efforts expended pursuant to quotes and contracts with CROs that conduct and manage clinical trials on its behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to the Company's vendors will exceed the level of services provided and result in a prepayment of the clinical expense. Payments under some of these contracts depend on factors such as the completion of clinical trial milestones. In accruing service fees, the Company estimates the time period over which services will be performed, enrollment of patients, number of sites activated and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from its estimate, the Company adjusts the accrual or amount of prepaid expense accordingly. Although the Company does not expect its estimates to be materially different from amounts actually incurred, its understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in it reporting amounts that are too high or too low in any particular period.

Income Taxes

Income Taxes

Income taxes are accounted for under the liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be recovered or settled. The Company evaluates the realizability of its deferred tax assets and establishes a valuation allowance when it is more likely than not that all or a portion of deferred tax assets will not be realized.

The Company accounts for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors including, but not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. The Company evaluates this tax position on an annual basis. The Company also accrues for potential interest and penalties related to unrecognized tax benefits in income tax expense (Refer to Note 12, Income Taxes).

Accounting for Stock-Based Compensation

Accounting for Stock-Based Compensation

Stock-based compensation cost is measured at the grant date based on the estimated fair value of the award and is recognized as expense over the employee’s requisite service period. Stock-based compensation expense is based on the number of awards ultimately expected to vest and is reduced for forfeitures as they occur. Consistent with prior years, the Company uses the Black-Scholes option pricing model, which requires estimates of the expected term option holders will retain their options before exercising them and the estimated volatility of the Company’s common stock price over the expected term.

The Company recognized the full impact of its share-based employee payment plans in the statements of operations for each of the years ended December 31, 2023 and 2022 and did not capitalize any such costs on the balance sheets. The Company recognized $2.5 million of compensation expense related to stock options for the year ended December 31, 2023 and $3.0 million of compensation expense related to stock options for the year ended December 31, 2022. The Company recognized $0.3 million of compensation expense related to restricted stock for the year ended December 31, 2023 and $0.5 million for the year ended December 31, 2022 (refer to Note 13, Stock Option Plan). The total compensation expense relating to vesting of stock options and restricted stock awards for the year ended December 31, 2023 was $2.8 million

and $3.5 million for the year ended December 31, 2022. The following table presents share-based compensation expense included in the Company’s statements of operations:

	Year Ended December 31,
(in thousands)	2023		2022
Research and development		439		868
General and administrative		2,361		2,660
Stock-based compensation expense	$	2,800	$	3,528

The fair value of each stock option is estimated at the date of grant using the Black-Scholes option pricing model. The estimated weighted-average fair value of stock options granted to employees in the year ended December 31, 2023 was approximately $5.58 per share and was approximately $11.54 per share for the year ended December 31, 2022. Assumptions regarding volatility, expected term, dividend yield and risk-free interest rate are required for the Black-Scholes model. The volatility assumption is based on the Company’s historical experience. The risk-free interest rate is based on a U.S. treasury note with a maturity similar to the option award’s expected life. The expected life represents the average period of time that options granted are expected to be outstanding. The Company calculated expected term using the simplified method described in SEC Staff Accounting Bulletin, or SAB, No. 107 and No. 110 as it continues to meet the requirements promulgated in SAB No. 110. The assumptions for volatility, expected life, dividend yield and risk-free interest rate are presented in the table below:

	Year Ended December 31,
	2023	2022
Risk-free interest rate	3.51 – 4.01%	1.63 – 4.21%
Expected life in years	5.06 – 6.25	5.27 – 6.25
Expected volatility	89.69 – 112.12%	74.49 – 88.75%
Expected dividend yield	—%	—%

Reverse Stock Split

On January 31, 2024, the Company filed a Second Amended and Restated Certificate of Incorporation (the “Charter Amendment”) with the Secretary of State of the State of Delaware in order to effect a reverse stock split of the Company’s common stock at a ratio of 1-for-15 (the “Reverse Split”). The Charter Amendment decreased the number of authorized shares of common stock from 520,000,000 to 34,666,667. The Charter Amendment does not affect the par value of the Company’s common stock or change the number of authorized shares or par value of the Company’s preferred stock. The Charter Amendment became effective on January 31, 2024 at 5:00 p.m. Eastern Time, at which time every 15 shares of the Company’s issued and outstanding common stock automatically combined and converted into 1 share of common stock.

No fractional shares were issued in connection with the Reverse Split. Stockholders of record who would otherwise have been entitled to receive fractional shares as a result of the Reverse Split received a cash payment in lieu thereof at a price equal to the fraction to which the stockholder would otherwise be entitled multiplied by the closing sales price per share of the common stock (as adjusted for the Reverse Split) on The Nasdaq Capital Market on January 31, 2024.

All share and per share amounts of common stock, options, warrants, and restricted stock in the accompanying financial statements and notes thereto have been retroactively adjusted for all periods presented to reflect the Reverse Split as if it had occurred at the beginning of the earliest period presented.

Net Loss per Share

Net Loss per Share

Basic net loss per common share is computed by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per share is computed using the weighted-average number of shares of common stock outstanding during the period, plus the dilutive effect of outstanding options and warrants, using the treasury stock method and the average market price of the Company’s common stock during the applicable period, unless their effect on net loss per share is antidilutive. The effect of computing diluted net loss per common share was antidilutive for any potentially issuable shares of common stock from the conversion of stock options, unvested restricted stock and warrants and, as such, have been excluded from the calculation.

The computation of basic and diluted net loss per share consists of the following:

	Year Ended December 31,
	2023			2022
Net loss	$	(35,140	)	$	(37,730	)
Weighted-average common shares outstanding, basic and diluted		15,995,323			14,475,354
Net loss per share, basic and diluted	$	(2.20	)	$	(2.61	)

Certain shares related to some of the Company’s outstanding common stock options, unvested restricted stock and warrants have not been included in the computation of diluted net loss per share for the years ended December 31, 2023 and 2022 as the result would be antidilutive. Such potential common shares on December 31, 2023 and 2022 consist of the following:

	December 31,
	2023		2022
Common stock options		465,898		693,909
Unvested restricted stock		-		62,604
Warrants		1,452,399		1,528,156
		1,918,297		2,284,669

New Accounting Pronouncements

New Accounting Pronouncements

In June 2016, the FASB issued Accounting Standards Update, or ASU, 2016-13, Financial Instruments: Credit Losses (Topic 326) as clarified in ASU 2019-04, ASU 2019-05 and ASU 2020-02. The objective of this standard is to provide information about expected credit losses on financial instruments at each reporting date and to change how other-than-temporary impairments on investment securities are recorded. The Company adopted ASU 2016-13 effective January 1, 2023, with no material impact upon adoption.

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which enhances the disclosures required for operating segments in the Company's annual and interim financial statements. ASU 2023-07 is effective retrospectively for fiscal years beginning after December 15, 2023 and for interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU 2023-09 provide for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. ASU 2023-09 is effective for the Company prospectively to all annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2023 and 2022 are as follows:

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2023		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	5,744	$	5,744	$	—	$	—

($ in thousands)			Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2022		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	38,058	$	38,058	$	—	$	—

Share-Based Compensation Expense Included in Statements of Operations

The following table presents share-based compensation expense included in the Company’s statements of operations:

	Year Ended December 31,
(in thousands)	2023		2022
Research and development		439		868
General and administrative		2,361		2,660
Stock-based compensation expense	$	2,800	$	3,528

Assumptions for Volatility, Expected life, Dividend Yield and Risk-free Interest Rate

The assumptions for volatility, expected life, dividend yield and risk-free interest rate are presented in the table below:

	Year Ended December 31,
	2023	2022
Risk-free interest rate	3.51 – 4.01%	1.63 – 4.21%
Expected life in years	5.06 – 6.25	5.27 – 6.25
Expected volatility	89.69 – 112.12%	74.49 – 88.75%
Expected dividend yield	—%	—%

Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method

Basic net loss per common share is computed by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding for the period. Diluted net loss per share is computed using the weighted-average number of shares of common stock outstanding during the period, plus the dilutive effect of outstanding options and warrants, using the treasury stock method and the average market price of the Company’s common stock during the applicable period, unless their effect on net loss per share is antidilutive. The effect of computing diluted net loss per common share was antidilutive for any potentially issuable shares of common stock from the conversion of stock options, unvested restricted stock and warrants and, as such, have been excluded from the calculation.

The computation of basic and diluted net loss per share consists of the following:

	Year Ended December 31,
	2023			2022
Net loss	$	(35,140	)	$	(37,730	)
Weighted-average common shares outstanding, basic and diluted		15,995,323			14,475,354
Net loss per share, basic and diluted	$	(2.20	)	$	(2.61	)

Potentially Dilutive Shares Excluded from Computation of Diluted Net Loss Per Share

Such potential common shares on December 31, 2023 and 2022 consist of the following:

	December 31,
	2023		2022
Common stock options		465,898		693,909
Unvested restricted stock		-		62,604
Warrants		1,452,399		1,528,156
		1,918,297		2,284,669

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Debt (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Schedule of Debt

There were no debt obligations outstanding at December 31, 2023. The carrying values of the Company's debt obligation at December 31, 2022 were as follows:

	December 31,
($ in thousands)	2022
Loan and Security Agreement	$	17,395
Unamortized discount on Loan and Security Agreement		(630	)
Total debt		16,765
Less: long-term debt, current		(16,765	)
Long-term debt	$	—

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Property and Equipment, net (Tables)

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

Component of Property and Equipment, Net

Property and equipment, net, consists of the following:

	December 31,
($ in thousands)	2023			2022
Office and computer equipment	$	15		$	2,183
Software		-			1,291
Leasehold improvements		-			9,561
Laboratory equipment		-			5,232
		15			18,267
Less: accumulated depreciation		(13	)		(9,807	)
Property and equipment, net	$	2		$	8,460

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Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2023

Payables and Accruals [Abstract]

Component of Accrued Expenses

Accrued expenses consist of the following:

($ in thousands)	2023		2022
Clinical	$	568	$	2,200
Employee compensation		43		1,160
Professional services		717		534
Preclinical services		-		198
Manufacturing services		12		1,177
Other consulting services		-		16
Other		-		169
	$	1,340	$	5,454

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Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases, Operating [Abstract]

Components of Lease Expense

The components of lease expense were as follows:

	Year Ended December 31,
($ in thousands)	2023		2022
Operating lease cost	$	428	$	756
Total lease cost	$	428	$	756
Weighted-average remaining lease term (years)		—		4.13
Weighted-average discount rate		—		8.26	%

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Significant Component of Deferred Tax Assets

Significant components of the Company’s deferred tax assets at December 31, 2023 and 2022 are as follows:

	December 31,
(in thousands)	2023			2022
Deferred tax assets:
Net operating loss carryforwards	$	148,009		$	171,070
Start-up and pre-clinical studies		13,754			17,204
Research and development credit carryforwards		39,838			40,116
Stock-based compensation		681			698
Capitalized acquisition costs		1,570			2,180
Lease liability		—			618
Depreciation		1			239
Capitalized research expenses		7,176			5,156
Other		2			27
		211,031			237,308
Less valuation allowance		(211,031	)		(236,827	)
Total deferred tax assets		—			481
Right-of-use asset		—			(481	)
Total deferred tax liabilities	$	—		$	(481	)
Net deferred taxes	$	—		$	—

Reconciliation of Income Tax Expense (Benefit)

A reconciliation of income tax expense (benefit) at the statutory federal income tax rate and income taxes as reflected in the financial statements is as follows:

	Year Ended December 31,
(in thousands)	2023			2022
Federal income tax at statutory rates		21	%		21	%
State income tax, net of federal tax benefit		(92	)%		3	%
Research and development credits		2	%		2	%
Research and development true-up		(1	)%		(2	)%
Stock-based compensation	—%				(1	)%
Federal/state rate change		(3	)%		(5	)%
Change in valuation allowance		73	%		(18	)%
Effective tax rate		—	%		—	%

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Stock Option Plans (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Stock Option Activity Under Stock Option Plan

Stock option activity under the Company's stock options plans for the years ending December 31, 2023 and 2022 were as follows:

(in thousands, except share and per share data)	Number of Shares			Weighted- Average Exercise Price		Weighted- Average Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding, December 31, 2021		711,058		$	43.05
Granted		313,167			16.14
Exercised		(1,750	)		12.00
Cancelled		(328,566	)		50.10
Outstanding, December 31, 2022		693,909		$	27.60
Granted		259,122			7.35
Cancelled		(487,133	)		17.70
Outstanding, December 31, 2023		465,898		$	26.85		7.81	$	—
Options exercisable, December 31, 2023		415,376		$	28.80		7.64	$	—
Options available for future grant, December 31, 2023		1,302,411

Summary of Non-Vested Restricted Stock

A summary of the status of restricted stock as of December 31, 2023 and 2022 is as follows:

	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested, December 31, 2021		79,905		$	31.54
Granted		18,667			12.30
Vested		(20,441	)		34.21
Cancelled		(15,527	)		47.23
Unvested, December 31, 2022		62,604		$	21.04
Vested		(33,322	)		17.94
Cancelled		(29,282	)		24.60
Unvested, December 31, 2023		—		$	—

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Organization - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 14, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Strategic advisor name	Cantor
Cash, cash equivalents and restricted cash		$ 6,062	$ 52,996	$ 76,054
Accumulated deficit		$ (915,767)	$ (880,627)
Common stock, shares outstanding		16,012,522	16,027,384
Common Stock [Member]
Common stock, shares outstanding		16,012,522
Common stock reserved for future issuance		1,918,297

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Financings - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Jan. 05, 2023	Nov. 29, 2022	Aug. 12, 2022	Dec. 31, 2023	Dec. 31, 2022	Aug. 06, 2021
Debt Instrument [Line Items]
Aggregate offering price				$ 92	$ 14,724
At The Market Offering [Member]
Debt Instrument [Line Items]
Number of additional option available to the underwriter to purchase		242,287
Term A Tranche [Member] | Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Loan and Security Agreement						$ 25,000
Term B Tranche [Member] | Silicon Valley Bank [Member]
Debt Instrument [Line Items]
Additonal tranche facility						$ 25,000
Equity Distribution Agreement [Member]
Debt Instrument [Line Items]
Stock issued during period				0	0
Aggregate offering price			$ 50,000
Percentage Of Commission On Gross Proceeds From Sale Of Common Stock			3.00%
Cantor [Member]
Debt Instrument [Line Items]
Common stock issuance		1,615,248
Underwriter par or stated value per share		$ 9.2865
Threshold period for exercise or conversion of stock		30 days
Cantor [Member] | Stock Option [Member]
Debt Instrument [Line Items]
Stock issued during period	14,420
Sale of stock consideration received on transaction		$ 14,700

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Jan. 31, 2024	Nov. 09, 2023	Aug. 14, 2023	Dec. 31, 2023	Dec. 31, 2022
Summary Of Significant Accounting Policies [Line Items]
Stock based compensation expenses				$ 2,800	$ 3,528
Pre stock split shares authorized	520,000,000
Post Stock Split Shares Authorized	34,666,667
Weighted average fair value of stock option granted				$ 5.58	$ 11.54
Stockholders equity reverse stock split	The Charter Amendment became effective on January 31, 2024 at 5:00 p.m. Eastern Time, at which time every 15 shares of the Company’s issued and outstanding common stock automatically combined and converted into 1 share of common stock.
Fixed asset impairment charges			$ 4,800
Asset Impairment Charges				$ 4,803	$ 0
Proceeds from the disposal of property and equipment				1,543	23
Gain on disposal of equipment				(7)	(7)
Collaboration revenue				$ 5	2,922
Prepaid Expenses and Other Current Assets
Summary Of Significant Accounting Policies [Line Items]
Asset Impairment Charges			200
Office and computer equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful life				3 years
Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful life				3 years
Laboratory equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful life				5 years
Asset Impairment Charges			1,000
Proceeds from the disposal of property and equipment		$ 1,500
Gain on disposal of equipment		$ 3
Leasehold improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Asset Impairment Charges			$ 3,800	$ 4,800
Property and equipment estimated useful life, Description [Extensible Enumeration]				us-gaap:UsefulLifeTermOfLeaseMember
Employee Stock Option
Summary Of Significant Accounting Policies [Line Items]
Stock based compensation expenses				$ 2,500	3,000
Restricted Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock based compensation expenses				300	500
Stock Options and Restricted Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock based compensation expenses				$ 2,800	$ 3,500

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Summary of Significant Accounting Policies - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 5,744	$ 38,058
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 5,744	$ 38,058

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Summary of Significant Accounting Policies - Stock-Based Compensation Expense Included in Statement of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2,800	$ 3,528
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	439	868
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2,361	$ 2,660

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Summary of Significant Accounting Policies - Fair Value of Stock Options Assumptions Using Black-Scholes Option Valuation Model (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Risk-free interest rate, Minimum	3.51%	1.63%
Risk-free interest rate, Maximum	4.01%	4.21%
Expected volatility, Minimum	89.69%	74.49%
Expected volatility, Maximum	112.12%	88.75%
Maximum [Member]
Expected life in years	6 years 3 months	6 years 3 months
Minimum [Member]
Expected life in years	5 years 21 days	5 years 3 months 7 days

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Summary of Significant Accounting Policies - Earning Per share Basic and Diluted (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net loss	$ (35,140)	$ (37,730)
Weighted average common shares outstanding, basic	15,995,323	14,475,354
Weighted average common shares outstanding, diluted	15,995,323	14,475,354
Net loss per share, basic	$ (2.2)	$ (2.61)
Net loss per share, diluted	$ (2.2)	$ (2.61)

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Summary of Significant Accounting Policies - Potential Dilutive Shares Excluded from Computation of Diluted Net Loss Per Share (Detail) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	1,918,297	2,284,669
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	1,452,399	1,528,156
Common stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	465,898	693,909
Unvested Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0	62,604

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Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt		$ 16,765
Less: long-term debt, current	$ 0	(16,765)
Long-term debt	$ 0	0
Silicon Valley Bank Loan [Member]
Debt Instrument [Line Items]
Loan and Security Agreement		17,395
Unamortized discount on Loan and Security Agreement		$ (630)

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Debt - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Dec. 28, 2021	Aug. 06, 2021	Dec. 31, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Debt obligations			$ 0	$ 0
Line of credit facility, interest rate		4.50%
Interest expense			$ 1,900	$ 3,200
Term Loan [Member]
Line of Credit Facility [Line Items]
Percentage of original principal due as a final payment		5.75%
Line of credit facility, interest rate		7.75%
Silicon Valley Bank Loan [Member]
Line of Credit Facility [Line Items]
Warrants issued	43,308
Warrants expiration date	Aug. 06, 2031
Description of payment terms		the Company also owed SVB 5.75% of the original principal amounts borrowed as a final payment, or the Final Payment. Effective March 30, 2023, the Company entered into a Third Amendment to the Loan and Security Agreement, or the Third Amendment. Under the terms of the Third Amendment, the Company was no longer required to maintain all of its operating accounts, depository accounts and excess cash with SVB or one of its affiliates, and was instead only required to maintain a single operating or depository account at Silicon Valley Bank. The Third Amendment also modified the cash collateralization requirement, such that the Company was required to cash collateralize the entire sum of the outstanding principal amount of the SVB Facility, plus an amount equal to the Final Payment, which amount was to be reduced commensurate with each regularly scheduled monthly payment of principal and interest on the SVB Facility.On May 1, 2023, the Company paid SVB an amount equal to the entire outstanding principal amount under the SVB Facility, all accrued and unpaid interest and the Final Payment. In accordance with the First Amendment, the payment was subject to a prepayment premium of 2.00%.
Debt instrument description of variable rate basis			The SVB Facility bore interest at a floating rate per annum on outstanding loans, payable monthly, at the greater of (a) 7.75% and (b) the current published U.S. prime rate, plus a margin of 4.5%.
Extinguishment of debt, amount			$ 500
Amount of prepayments premium			$ 100
Number of warrants issued		28,856
Warrant exercise per share	$ 17.4	$ 33.3
Additional number warrants issued		28,856
Debt instrument, initial maturity date			Aug. 01, 2023
Silicon Valley Bank Loan [Member] | Debt Instrument Redemption Period One
Line of Credit Facility [Line Items]
Percentage of prepayments premium			2.00%
Silicon Valley Bank Loan [Member] | Warrants [Member]
Line of Credit Facility [Line Items]
Issuance costs	$ 1,200

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Property and Equipment, net - Component of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 15	$ 18,267
Less: accumulated depreciation	(13)	(9,807)
Property and equipment, net	2	8,460
Office and computer equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	15	2,183
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	0	1,291
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	0	9,561
Laboratory equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 0	$ 5,232

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Property and Equipment, net - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Aug. 14, 2023	Dec. 31, 2023	Dec. 31, 2022
Depreciation		$ 2,315	$ 2,759
Asset Impairment Charges		4,803	$ 0
Leasehold improvements [Member]
Asset Impairment Charges	$ 3,800	$ 4,800

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Accrued Expenses - Component of Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Clinical	$ 568	$ 2,200
Employee compensation	43	1,160
Professional services	717	534
Preclinical services	0	198
Manufacturing services	12	1,177
Other consulting services	0	16
Other	0	169
Total	$ 1,340	$ 5,454

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Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 18, 2018	Dec. 31, 2023
Eden Biocell [Member]
Related Party Transaction [Line Items]
Payments to Fund Long-term Loans to Related Parties	$ 10,000
Additional Loans Committed	$ 25,000
Dune Lake Capital [Member]
Related Party Transaction [Line Items]
Consulting service amount		$ 37

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Leases - Additional Information (Details)			12 Months Ended
	Nov. 15, 2023 USD ($)	Apr. 19, 2023	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 01, 2023 ft²	Aug. 31, 2023 USD ($) ft²	Jun. 30, 2022 ft²	Apr. 30, 2022 USD ($) ft²
Lease termination date			Apr. 19, 2023
Sublease term amendment		Jul. 31, 2026
Termination costs			$ 200,000
Gain on lease termination			298,000	$ 133,000
Operating Lease Area | ft²					14,037
Right-of-use assets			0	2,136,000
Gain (Loss) On Modification Of Lease				100,000
Sublease Area | ft²							4,772
Lease term, description		a term expiring on June 30, 2025 with an option to extend through July 31, 2026
Operating Lease, Payments	$ 100,000		400,000
Recognition in exchange of Operating Lease Liabilities			0
Leases other than short-term lease			0
MD Anderson [Member]
Gain on lease termination			100,000
Other Income Expense [Member]
Lease income			43,000	$ 100,000
Boston, MA [Member]
Gain on lease termination			$ 200,000
Houston, TX [Member]
Operating Lease Area | ft²						3,228		3,228
Right-of-use assets						$ 19,000		$ 400,000
Houston, TX [Member] | Previously Reported [Member]
Operating Lease Area | ft²								18,111

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Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating lease cost	$ 428	$ 756
Total lease cost	$ 428	$ 756
Weighted-average remaining lease term (years)		4 years 1 month 17 days
Weighted-average discount rate	0.00%	8.26%

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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands							12 Months Ended
	Oct. 20, 2023	Aug. 14, 2023	Mar. 17, 2023	May 28, 2019	Aug. 17, 2015	Jan. 13, 2015	Dec. 31, 2023	Dec. 31, 2022	Apr. 03, 2023	Oct. 22, 2019	Feb. 19, 2019	Oct. 05, 2018	Aug. 24, 2004
Accrued Payments
Research and development expense							$ 16,279	$ 25,018
Royalty amount							0	0
Maximum royalty amount												$ 100,000
Collaboration revenue							5	2,922
Unspecified monetary damages			$ 3,200
Loss contingency, name of plaintiff			KBI Biopharma
Litigation expense	$ 1,000
Md Anderson Warrant [Member]
Accrued Payments
Number of Warrants										222,222
Warrant exercise per share										$ 0.015
Warrant Expiry date										Dec. 31, 2026
MD Anderson Related to the 2015 R&D Agreement [Member]
Accrued Payments
Clinical expenses							100	0
MD Anderson License and the Research and Development Agreement [Member]
Accrued Payments
Reimbursement of historical costs										$ 20,000
Clinical expenses							800	800
Aggregate potential benchmark payments										36,500
Payments due prior to the first marketing approval										$ 3,000
CRADA Agreement [Member]
Accrued Payments
Agreement termination date		Oct. 13, 2023
Contribution payable on per annum basis							1,000
Obligations due under contract											$ 5,000
Annual expense incurred							500	0
MD Anderson Agreement and Worldwide License [Member]
Accrued Payments
License agreement commencing date						Jan. 13, 2015
The University of Texas MD Anderson Cancer Center and The Texas A & M University System [Member]
Accrued Payments
Milestone maximum payment													$ 4,500
One time milestone payment								2,500
The University of Texas MD Anderson Cancer Center and The Texas A & M University System [Member] | Royalty [Member]
Accrued Payments
Payment under license agreement							1	2
License Agreement with the National Cancer Institute [Member]
Accrued Payments
License Expense							400	700
License Agreement with the National Cancer Institute [Member] | One Time Benchmark Payments [Member]
Accrued Payments
First benchmark payment				$ 100
Ziop License Agreement With The National Cancer Institute [Member]
Accrued Payments
Minimum royalties amount payable				300
Royalties amount payable thereafter				100
Aggregate minimum annual royalties paid				$ 1,500
Description Of First Benchmark Payable				The first benchmark payment of $0.1 million was paid during the year ended December 31, 2022 upon the initiation of the Company's TCR-T Library Phase 1/2 Trial, which was a qualifying Phase 1 clinical trial under the terms of the Patent License.
Description Of option To terminate Agreement				The NCI could terminate or modify the Patent License in the event of a material breach, including if the Company did not meet certain milestones by certain dates, or upon certain insolvency events that remain uncured following the date that is 90 days following written notice of such breach or insolvency event.
Agreement termination, notice period				60 days
Ziop License Agreement With The National Cancer Institute [Member] | Performance Based Payments [Member]
Accrued Payments
Aggregate Benchmark Payments Payable				$ 4,300
Ziop License Agreement With The National Cancer Institute [Member] | One Time Benchmark Payments [Member]
Accrued Payments
Potential Benchmark Payments Payable				12,000
Ziop License Agreement With The National Cancer Institute [Member] | Post Marketing Approval [Member] | Performance Based Payments [Member]
Accrued Payments
Aggregate Benchmark Payments Payable				3,000
Ziop License Agreement With The National Cancer Institute [Member] | Licensed Products [Member] | One Time Benchmark Payments [Member]
Accrued Payments
Maximum Sales Revenue On Which Benchmark Payments Payable				1,000,000
Minimum sales revenue on which benchmark payments payable				$ 250,000
Collaboration Agreement with Solasia Pharma K.K. [Member]
Accrued Payments
Collaboration revenue							0	2,900
Collaboration Agreement with Solasia Pharma K.K. [Member] | Royalty [Member]
Accrued Payments
Collaboration revenue							5
Intrexon Corporation [Member]
Accrued Payments
Annual License fee							$ 100	$ 100	$ 75			100
Expected additional milestones payable												52,500
Intrexon Corporation [Member] | T-Cell Receptor [Member]
Accrued Payments
Maximum royalty amount												$ 100,000
Portion of income payable to related party												20.00%
Minimum [Member] | MD Anderson License and the Research and Development Agreement [Member]
Accrued Payments
Research and development expense					$ 15,000
Maximum [Member] | MD Anderson License and the Research and Development Agreement [Member]
Accrued Payments
Research and development expense					$ 20,000

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Warrants - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands						12 Months Ended
	Dec. 28, 2021	Aug. 06, 2021	Oct. 22, 2019	Sep. 12, 2019	Nov. 11, 2018	Dec. 31, 2023	Dec. 31, 2022
Fair Value Assumptions Expected volatility Rate Maximum						112.12%	88.75%
Fair Value Assumptions Risk Free Interest Rate Maximum						4.01%	4.21%
Aggregate offering price						$ 92	$ 14,724
Proceeds from private placement				$ 52,500
Silicon Valley Bank Loan [Member]
Warrant exercise per share	$ 17.4	$ 33.3
Number of warrants issued		28,856
MD Anderson Warrant [Member]
Number of securities into which the class of warrant converted			222,222
Warrant exercise per share			$ 0.015
Fair value of warrants			$ 14,500
Warrant Expiry date			Dec. 31, 2026
SVB Warrants [Member]
Common stock		28,856
Exercise price		33.30
Warrants exercised						0
Warrants fully vested upon issuance		10 years
Black-Scholes Model [Member] | Silicon Valley Bank Loan [Member]
Exercise price	17.40
Number of warrants issued	43,308
Black-Scholes Model [Member] | SVB Warrants [Member]
Fair value of warrants		$ 800
Fair Value Assumptions Expected Term1		10 years
Expected volatility		79.00%
Risk-free interest rate		1.31%
Dividends		$ 0
Securities Purchase Agreement [Member]
Aggregate offering price					$ 47,100
Private Placement [Member]
Number of securities into which the class of warrant converted				1,186,869	1,262,626
Warrant exercise per share				$ 45.15	$ 45.15
Fair value of warrants					$ 18,400
Fair Value Assumptions Expected volatility Rate Maximum					71.00%
Fair Value Assumptions Risk Free Interest Rate Maximum					2.99%
Fair Value Assumptions Expected Term1					5 years
Placement agent fees and other expenses				$ 1,100
Dividends					$ 0
Private Placement [Member] | New Warrants [Member]
Number of securities into which the class of warrant converted				1,186,869
Warrant exercise per share				$ 105
Non-cash inducement warrant expense				$ 60,800

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Restructuring - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Restructuring and Related Activities [Abstract]
Termination benefits	$ 1.3

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Income Taxes - Significant Component of Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Net operating loss carryforwards	$ 148,009	$ 171,070
Deferred tax assets:
Start-up and pre-clinical studies	13,754	17,204
Research and development credit carryforwards	39,838	40,116
Stock-based compensation	681	698
Capitalized acquisition costs	1,570	2,180
Lease liability	0	618
Depreciation	1	239
Capitalized research expenses	7,176	5,156
Other	2	27
Deferred Tax Assets Gross	211,031	237,308
Less valuation allowance	(211,031)	(236,827)
Total deferred tax assets	0	481
Deferred tax liabilities:
Right of use asset	0	(481)
Total deferred tax liabilities	0	(481)
Net deferred taxes	$ 0	$ 0

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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Net operating loss carryforwards	$ 148,009	$ 171,070
Deferred tax assets operating loss carryforwards without expire date	363,200
Research and development credit carryforwards	39,838	40,116
Reduced credits carryforward	0
Uncertain Tax Positions Adjustment	0	$ 0
Increase (decrease) in deferred tax assets	(25,800)
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 704,900
Net operating loss carryforwards, expiration date	2037
Federal and State [Member]
Income Taxes [Line Items]
Deferred tax assets operating loss carryforwards with expire date	$ 341,700
Net operating loss carryforwards, expiration date	2043
Federal and State [Member] | Research Tax Credit Carryforward
Income Taxes [Line Items]
Research and development credit carryforwards	$ 39,800
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	497,900
Increase (decrease) in deferred tax assets	$ 0

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Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Federal income tax at statutory rates	21.00%	21.00%
State income tax, net of federal tax benefit	(92.00%)	3.00%
Research and development credits	2.00%	2.00%
Research and development true-up	(1.00%)	(2.00%)
Stock-based compensation	0.00%	(1.00%)
Federal/state rate change	(3.00%)	(5.00%)
Change in valuation allowance	73.00%	(18.00%)
Effective tax rate	0.00%	0.00%

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Preferred Stock and Stockholders' Equity (Deficit) - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 11, 2018	Dec. 31, 2023	Dec. 31, 2022
Equity [Line Items]
Common stock, shares authorized		34,666,667	28,000,000
Initial Public Offering of Common Stock		$ 0.001	$ 0.001
Aggregate offering price		$ 92	$ 14,724
Common stock, shares outstanding		16,012,522	16,027,384
Common Stock [Member]
Equity [Line Items]
Aggregate offering price			$ 2
Common stock, shares outstanding		16,012,522
Common Stock, shares reserved for future issuance		1,918,297
Securities Purchase Agreement [Member]
Equity [Line Items]
Aggregate offering price	$ 47,100

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Stock Option Plan - Additional information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2020	May 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding options issued	465,898	693,909	711,058
Proceeds from stock options exercised	$ 0	$ 21,000
Total intrinsic value of options		$ 26,000
Options available for future grant	1,302,411
Restricted Stock [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award granted	0	18,667
Repurchase of Shares of Restricted Stock	0	1,250
Price per Share		$ 36.15
Unvested Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs related to non-vested restricted stock outstanding	$ 400,000
Expected recognition period	1 year 6 months 10 days
Unvested Restricted Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award granted		18,667
Unrecognized stock-based compensation expense related to non-vested restricted stock arrangements	$ 0
the "2012 Plan" [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance					933,333
Options available for future grant	71,085
the "2012 Plan" [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	65,728
the "2020 Plan" [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized				1,400,000
Options available for future grant				1,471,085
the "2020 Plan" [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	400,167

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Stock Option Plan - Stock Option Activity Under Stock Option Plan (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Number of Shares
Beginning Balance	693,909	711,058
Granted	259,122	313,167
Exercised		(1,750)
Cancelled	(487,133)	(328,566)
Ending Balance	465,898	693,909
Options exercisable, at end of period	415,376
Options available for future grant	1,302,411
Weighted Average Exercise Price
Beginning Balance	$ 27.6	$ 43.05
Granted	7.35	16.14
Exercised		12
Cancelled	17.7	50.1
Ending Balance	26.85	$ 27.6
Options exercisable, at end of period	$ 28.8
Weighted Average Contractual Term (Years)
Outstanding, at end of period	7 years 9 months 21 days
Options exercisable, at end of period	7 years 7 months 20 days
Aggregate Intrinsic Value
Outstanding, at end of period	$ 0
Options exercisable, at end of period	$ 0

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Stock Option Plan - Summary of Non-Vested Restricted Stock (Detail) - Unvested Restricted Common Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Number of Shares
Beginning Balance	62,604	79,905
Granted		18,667
Vested	(33,322)	(20,441)
Cancelled	(29,282)	(15,527)
Ending Balance	0	62,604
Weighted Average Grant Date Fair Value
Beginning Balance	$ 21.04	$ 31.54
Granted		12.3
Vested	17.94	34.21
Cancelled	24.6	47.23
Ending Balance	$ 0	$ 21.04

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Employee Benefit Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
Defined benefit plan contributions by employer	$ 0.2	$ 0.5

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Joint Venture - Additional Information (Details)	Jul. 05, 2019
Ziopharm [Member] | Eden Bio Cell [Member]
Subsidiary or Equity Method Investee [Line Items]
Equity interest in affilated entity	50.00%

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Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Feb. 22, 2024	Jan. 21, 2024	Dec. 31, 2023	Dec. 31, 2022
Subsequent Event [Line Items]
Stock options granted exercise price			$ 7.35	$ 16.14
Notice period	30 days
Subsequent Event [Member]
Subsequent Event [Line Items]
Consulting Agreement Provides for Compensation	$ 15
Subsequent Event [Member] | Mr. Hogue
Subsequent Event [Line Items]
Annual salary in cash		$ 250
Common stock shares awarded		40,000
Stock options granted exercise price		$ 1.8