Commitments and Contingencies	12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	6. Commitments and Contingencies Concentrations of Credit Risk The Company limits its credit risk associated with its cash and cash equivalents by placing them with financial institutions it believes are highly creditworthy. Bank accounts in the United States are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250 thousand. The Company’s cash accounts significantly exceed the FDIC limits. Indemnifications As permitted under Delaware law, the Company indemnifies its officers, directors, and employees for certain events and occurrences while the officer, employee or director is, or was, serving at the Company’s request in such capacity. As of December 31, 2024, the Company did not have any material indemnification claims that were probable or reasonably possible and consequently has not recorded any related liabilities. Lease Agreements The Company has entered into month-to-month lease agreements for certain office and laboratory space. The lease agreements are cancellable by the Company at any time with a 30-day notice. Total rent expense was $300 thousand and $129 thousand for the years ended December 31, 2024 and 2023, respectively. Clinical and Preclinical Services The Company has entered into various agreements with third-party vendors for preclinical and clinical services. The estimated remaining commitments as of December 31, 2024 under these agreements were approximately $7.2 million. The Company entered into agreements with a clinical research organization ("CRO") for clinical trials of FB102, its product candidate. The Company has agreed to pay third-party costs associated with those agreements. The CRO agreements are subject to termination at any time, with or without cause, by the Company, in which case only costs earned or non-cancellable to the date of termination would remain subject to reimbursement. Legal Proceedings Camac Fund L.P. v. Forte Biosciences Inc., C.A. No. 2022-1075-NAC (Del. Ch.) In November 2022, a stockholder of the Company, Camac Fund LP, filed a complaint in the Delaware Court of Chancery seeking to access certain books and records of the Company pursuant to Section 220 of the Delaware General Corporation Law, as well as to seek attorney fees (the “Books and Records Action”). The Books and Records Action, which is captioned Camac Fund L.P. v. Forte Biosciences Inc., C.A. No. 2022-1075-NAC, was dismissed with prejudice on July 29, 2024. Camac Fund, LP v. Paul A. Wagner, et al., C.A. No. 2023-0817-MTZ (Del. Ch.) On August 10, 2023, Camac Fund LP filed a complaint (the “Complaint”), captioned Camac Fund, LP v. Paul A. Wagner, et al., C.A. No. 2023-0817-MTZ, in the Delaware Court of Chancery, against the members of the Company's Board of Directors (the "Directors") and entities affiliated with certain of the Company’s investors (the “Investors”) and naming the Company as nominal defendant. The Complaint alleged that the Directors breached their fiduciary duties by causing the Company to enter into a July 31, 2023 private placement (the “ 2023 Private Placement”), which raised approximately $25 million for the Company from the Investors and certain of the Company’s executives and directors, and by scheduling the Company’s 2023 annual meeting of stockholders (the “Annual Meeting”) for more than thirteen months after its 2022 annual meeting. The Complaint also alleged the Investors aided and abetted the alleged breaches of fiduciary duty by the Directors. Plaintiff also filed a motion for preliminary injunction and motion to expedite seeking a hearing on its preliminary injunction motion on an expedited basis. The Complaint and motions sought declarations that the Directors breached their fiduciary duties and that the Investors aided and abetted them, to enjoin defendants from counting votes cast by the Investors’ shares obtained through the private placement at the Annual Meeting or any subsequent director election, and money damages in an unspecified amount. On August 15, 2023, the Company, the Directors, and certain Investors filed oppositions to Plaintiff’s motion to expedite. On August 16, 2023, the Company, the Directors, and certain Investors filed motions to dismiss the Complaint. On August 17, 2023, the Court held a hearing at which it granted the motion to expedite in part but declined to schedule a preliminary injunction hearing prior to the Annual Meeting and determined that Defendants could brief their motions to dismiss and be heard on an expedited schedule. The Court determined that discovery could proceed while the motions to dismiss are pending and directed the parties to confer regarding a schedule for further proceedings. On September 1, 2023, Plaintiff voluntarily dismissed its claims against the Investors. On September 7, 2023, the parties agreed to a schedule for briefing the motion to dismiss filed by the Directors and the Company (together, hereinafter, “Defendants”), with the understanding that the schedule would change if Plaintiff amended its Complaint rather than file a brief in opposition to Defendants’ motion to dismiss, and the parties also agreed to stay discovery pending resolution of the motion to dismiss. On September 19, 2023, the Company held its Annual Meeting at which, among other things, the Company’s two director nominees were re-elected and Plaintiff’s two director nominees were not elected. On September 21, 2023, Defendants filed their opening brief in support of their motion to dismiss. On October 20, 2023, Plaintiff filed an amended class action and derivative complaint (the “Amended Complaint”) against the Directors and naming the Company as a nominal defendant. The Amended Complaint makes many of the same allegations as the original Complaint. The Amended Complaint also purports to bring a claim on behalf of a class of holders of the Company’s common stock as of August 10, 2023, the record date for the Annual Meeting. The class claim alleges the Directors breached their fiduciary duties by causing the Company to enter into the Private Placement, setting the Annual Meeting record date for a date after the Private Placement closed, and holding the Annual Meeting more than thirteen months after the 2022 annual meeting. The Amended Complaint purports to bring a second claim for “wrongful dilution” derivatively on behalf of the Company. The derivative claim alleges the Directors “wrongfully diluted” Plaintiff and other stockholders by causing the Company to enter into the Private Placement in bad faith and for the purpose of entrenchment and not permitting Plaintiff and other stockholders to participate. The Amended Complaint seeks declarations that the Directors breached their fiduciary duties, that the votes cast at the Annual Meeting by the shares acquired in the Private Placement should be excluded from the final voting results, that Plaintiff’s two director nominees at the Annual Meeting were elected and that the Company’s nominees were not elected, as well as an order requiring the Company’s board of directors to recognize Plaintiff’s nominees as validly elected and remove the Company’s nominees from their positions on the board of directors. The Amended Complaint also sought an order that the Company hold an annual meeting of stockholders in 2024 within thirteen months of the 2023 Annual Meeting, that the shares acquired in the Private Placement are enjoined from voting at the 2024 annual meeting, and awarding money damages in an unspecified amount. On November 3, 2023, Defendants moved to dismiss the Amended Complaint, which was fully briefed in advance of a hearing before the Court on the motion on February 14, 2024. On April 15, 2024, the Court issued an oral ruling denying Defendants’ motion to dismiss. Expedited discovery ensued. On June 4, 2024, the parties reached an agreement-in-principle to settle the action. On June 11, 2024, the parties entered into a Stipulation and Agreement of Settlement, Compromise, and Release, which was filed with the Court the next day. Also on June 11, 2024, the Company entered into a Standstill and Voting Agreement with Camac Fund LP and related entities and persons. On July 2, 2024, Plaintiff filed its Opening Brief in Support of (A) Approval of Settlement; (B) Certification of the Settlement Class; and (C) Award of Attorneys’ Fees, Litigation Expenses and Incentive Award. In accordance with the terms of the Stipulation and Agreement of Settlement, Compromise, and Release the Company paid $364 thousand and accrued $1.7 million for Camac’s estimated legal fees which does not include any potential insurance recoveries. The accrual reflected the Company’s best estimate based on currently available information at the time. On July 30, 2024, the Court held a settlement hearing and declined to approve the settlement. The Company subsequently took certain actions to moot Camac’s claims in the action, as described more fully in the Company’s Form 8-K filed with the SEC on September 20, 2024, which is incorporated by reference. Camac acknowledged that the actions taken by the Company mooted all claims in the action and provided substantial benefits to all stockholders. Camac also repaid to the Company the $364 thousand that the Company had paid for Camac’s expenses. In order to fully resolve Camac’s claim for an award of attorneys’ fees, the Company, on behalf of all named defendants in the action, made a payment to Plaintiff’s counsel for its fees and expenses in the amount of $1.5 million. On September 18, 2024, the parties filed a Stipulation and Proposed Order Dismissing the Action as Moot (the “Mootness Order”), pursuant to which the action would be dismissed with prejudice as to Camac only. On September 20, 2024, the Court entered the Mootness Order. On October 8, 2024, Forte filed an affidavit notifying the Court that, as required by the Mootness Order, it had filed the September 20, 2024 Form 8-K. In accordance with the Mootness Order, the Court subsequently closed the case. Forte Biosciences, Inc. v. Camac Fund, LP, et al., Case No. 3:23-cv-02399-N (N.D. Tex.) On October 28, 2023, the Company filed a complaint (the “Texas Complaint”), captioned Forte Biosciences, Inc. v. Camac Fund, LP, et al., Case No. 3:23-cv-02399-N, in the U.S. District Court for the Northern District of Texas, against Camac Fund, LP, Camac Partners, LLC, Camac Capital, LLC, and Eric Shahinian (collectively, “Camac”), as well as against Michael G. Hacke, Chris McIntyre, McIntyre Partnerships, LP, McIntyre Capital GP, LLC, McIntyre Capital Management, LP, McIntyre Capital Management GP, LLC, ATG Fund II LLC, ATG Capital Management, LLC, Gabriel Gliksberg, Funicular Funds, LP, The Funicular Fund, LP, Cable Car Capital LLC, Jacob Ma-Weaver, BML Investment Partners, L.P., BML Capital Management, LLC, and Braden M. Leonard (collectively with Camac, the “Texas Defendants”). The Texas Complaint alleged that the Texas Defendants issued false and misleading disclosures in connection with their efforts to elect two directors to Forte’s board of directors at the 2023 annual meeting. The Texas Defendants moved to dismiss and on June 11, 2024, the Complaint was dismissed with prejudice. In October 2024, to resolve all claims and potential claims asserted by the parties, the Texas Defendants entered into a settlement agreement and release with Forte, and all Texas Defendants other than Camac entered into standstill and voting agreements that are similar to the agreement Camac entered into in June 2024. The Company paid $650 thousand related to these agreements which does not include any potential insurance recoveries. The Company expenses legal fees as they are incurred. Forte Biosciences, Inc. v. Wesco Insurance Co., et al., Case No. N24C-10-015 VLM CCLD (Del. Super. Ct.) On October 1, 2024, the Company filed a complaint (the “Wesco Complaint”), captioned Forte Biosciences, Inc. v. Wesco Insurance Co., et al., Case No. N24C-10-015 VLM CCLD, in the Superior Court of the State of Delaware, against its current and former carriers of Directors & Officers liability insurance, Wesco Insurance Company, Beazley Insurance Company, and Palms Insurance Company, Limited (collectively, “Insurance Defendants”). The Wesco Complaint brings claims for declaratory relief, breach of contract, and bad faith, alleging that the Insurance Defendants breached their contractual and legal obligations by refusing to acknowledge and perform their obligation to provide insurance coverage to the Company in connection with: (i) the action captioned Camac Fund, LP v. Paul A. Wagner, et al., C.A. No. 2023-0817-MTZ (Del. Ch.), described above; (ii) a books and records action brought by Camac in November 2022, which was captioned Camac Fund L.P. v. Forte Biosciences Inc., C.A. No. 2022-1075-NAC (Del. Ch.), described above; and (iii) two books demands for books and records under Delaware General Corporation Law Section 220, made by Camac on August 26, 2022 and August 23, 2023, respectively. The Complaint seeks a declaratory judgment that one or more of the Insurance Defendants have an obligation to provide insurance coverage to the Company and the named defendants in the referenced actions, reimbursement and compensatory damages from the Insurance Defendants for breach of contract, and consequential and punitive damages for the Insurance Defendants’ bad faith coverage positions.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

6. Commitments and Contingencies

Concentrations of Credit Risk

The Company limits its credit risk associated with its cash and cash equivalents by placing them with financial institutions it believes are highly creditworthy. Bank accounts in the United States are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250 thousand. The Company’s cash accounts significantly exceed the FDIC limits.

Indemnifications

As permitted under Delaware law, the Company indemnifies its officers, directors, and employees for certain events and occurrences while the officer, employee or director is, or was, serving at the Company’s request in such capacity. As of December 31, 2024, the Company did not have any material indemnification claims that were probable or reasonably possible and consequently has not recorded any related liabilities.

Lease Agreements

The Company has entered into month-to-month lease agreements for certain office and laboratory space. The lease agreements are cancellable by the Company at any time with a 30-day notice. Total rent expense was $300 thousand and $129 thousand for the years ended December 31, 2024 and 2023, respectively.

Clinical and Preclinical Services

The Company has entered into various agreements with third-party vendors for preclinical and clinical services. The estimated remaining commitments as of December 31, 2024 under these agreements were approximately $7.2 million. The Company entered into agreements with a clinical research organization ("CRO") for clinical trials of FB102, its product candidate. The Company has agreed to pay third-party costs associated with those agreements. The CRO agreements are subject to termination at any time, with or without cause, by the Company, in which case only costs earned or non-cancellable to the date of termination would remain subject to reimbursement.

Legal Proceedings

Camac Fund L.P. v. Forte Biosciences Inc., C.A. No. 2022-1075-NAC (Del. Ch.)

In November 2022, a stockholder of the Company, Camac Fund LP, filed a complaint in the Delaware Court of Chancery seeking to access certain books and records of the Company pursuant to Section 220 of the Delaware General Corporation Law, as well as to seek attorney fees (the “Books and Records Action”). The Books and Records Action, which is captioned Camac Fund L.P. v. Forte Biosciences Inc., C.A. No. 2022-1075-NAC, was dismissed with prejudice on July 29, 2024.

Camac Fund, LP v. Paul A. Wagner, et al., C.A. No. 2023-0817-MTZ (Del. Ch.)

On August 10, 2023, Camac Fund LP filed a complaint (the “Complaint”), captioned Camac Fund, LP v. Paul A. Wagner, et al., C.A. No. 2023-0817-MTZ, in the Delaware Court of Chancery, against the members of the Company's Board of Directors (the "Directors") and entities affiliated with certain of the Company’s investors (the “Investors”) and naming the Company as nominal defendant. The Complaint alleged that the Directors breached their fiduciary duties by causing the Company to enter into a July 31, 2023 private placement (the “ 2023 Private Placement”), which raised approximately $25 million for the Company from the Investors and certain of the Company’s executives and directors, and by scheduling the Company’s 2023 annual meeting of stockholders (the “Annual Meeting”) for more than thirteen months after its 2022 annual meeting. The Complaint also alleged the Investors aided and abetted the alleged breaches of fiduciary duty by the Directors. Plaintiff also filed a motion for preliminary injunction and motion to

expedite seeking a hearing on its preliminary injunction motion on an expedited basis. The Complaint and motions sought declarations that the Directors breached their fiduciary duties and that the Investors aided and abetted them, to enjoin defendants from counting votes cast by the Investors’ shares obtained through the private placement at the Annual Meeting or any subsequent director election, and money damages in an unspecified amount.

On August 15, 2023, the Company, the Directors, and certain Investors filed oppositions to Plaintiff’s motion to expedite. On August 16, 2023, the Company, the Directors, and certain Investors filed motions to dismiss the Complaint. On August 17, 2023, the Court held a hearing at which it granted the motion to expedite in part but declined to schedule a preliminary injunction hearing prior to the Annual Meeting and determined that Defendants could brief their motions to dismiss and be heard on an expedited schedule. The Court determined that discovery could proceed while the motions to dismiss are pending and directed the parties to confer regarding a schedule for further proceedings.

On September 1, 2023, Plaintiff voluntarily dismissed its claims against the Investors. On September 7, 2023, the parties agreed to a schedule for briefing the motion to dismiss filed by the Directors and the Company (together, hereinafter, “Defendants”), with the understanding that the schedule would change if Plaintiff amended its Complaint rather than file a brief in opposition to Defendants’ motion to dismiss, and the parties also agreed to stay discovery pending resolution of the motion to dismiss. On September 19, 2023, the Company held its Annual Meeting at which, among other things, the Company’s two director nominees were re-elected and Plaintiff’s two director nominees were not elected. On September 21, 2023, Defendants filed their opening brief in support of their motion to dismiss.

On October 20, 2023, Plaintiff filed an amended class action and derivative complaint (the “Amended Complaint”) against the Directors and naming the Company as a nominal defendant. The Amended Complaint makes many of the same allegations as the original Complaint. The Amended Complaint also purports to bring a claim on behalf of a class of holders of the Company’s common stock as of August 10, 2023, the record date for the Annual Meeting. The class claim alleges the Directors breached their fiduciary duties by causing the Company to enter into the Private Placement, setting the Annual Meeting record date for a date after the Private Placement closed, and holding the Annual Meeting more than thirteen months after the 2022 annual meeting. The Amended Complaint purports to bring a second claim for “wrongful dilution” derivatively on behalf of the Company. The derivative claim alleges the Directors “wrongfully diluted” Plaintiff and other stockholders by causing the Company to enter into the Private Placement in bad faith and for the purpose of entrenchment and not permitting Plaintiff and other stockholders to participate. The Amended Complaint seeks declarations that the Directors breached their fiduciary duties, that the votes cast at the Annual Meeting by the shares acquired in the Private Placement should be excluded from the final voting results, that Plaintiff’s two director nominees at the Annual Meeting were elected and that the Company’s nominees were not elected, as well as an order requiring the Company’s board of directors to recognize Plaintiff’s nominees as validly elected and remove the Company’s nominees from their positions on the board of directors. The Amended Complaint also sought an order that the Company hold an annual meeting of stockholders in 2024 within thirteen months of the 2023 Annual Meeting, that the shares acquired in the Private Placement are enjoined from voting at the 2024 annual meeting, and awarding money damages in an unspecified amount.

On November 3, 2023, Defendants moved to dismiss the Amended Complaint, which was fully briefed in advance of a hearing before the Court on the motion on February 14, 2024. On April 15, 2024, the Court issued an oral ruling denying Defendants’ motion to dismiss. Expedited discovery ensued. On June 4, 2024, the parties reached an agreement-in-principle to settle the action. On June 11, 2024, the parties entered into a Stipulation and Agreement of Settlement, Compromise, and Release, which was filed with the Court the next day. Also on June 11, 2024, the Company entered into a Standstill and Voting Agreement with Camac Fund LP and related entities and persons. On July 2, 2024, Plaintiff filed its Opening Brief in Support of (A) Approval of Settlement; (B) Certification of the Settlement Class; and (C) Award of Attorneys’ Fees, Litigation Expenses and Incentive Award. In accordance with the terms of the Stipulation and Agreement of Settlement, Compromise, and Release the Company paid $364 thousand and accrued $1.7 million for Camac’s estimated legal fees which does not include any potential insurance recoveries. The accrual reflected the Company’s best estimate based on currently available information at the time. On July 30, 2024, the Court held a settlement hearing and declined to approve the settlement.

The Company subsequently took certain actions to moot Camac’s claims in the action, as described more fully in the Company’s Form 8-K filed with the SEC on September 20, 2024, which is incorporated by reference. Camac acknowledged that the actions taken by the Company mooted all claims in the action and provided substantial benefits to all stockholders. Camac also repaid to the Company the $364 thousand that the Company had paid for Camac’s expenses. In order to fully resolve Camac’s claim for an award of attorneys’ fees, the Company, on behalf of all named defendants in the action, made a payment to Plaintiff’s counsel for its fees and expenses in the amount of $1.5 million. On September 18, 2024, the parties filed a Stipulation and Proposed Order Dismissing the Action as Moot (the “Mootness Order”), pursuant to which the action would be dismissed with prejudice as to Camac only. On September 20, 2024, the Court entered the Mootness Order. On October 8, 2024, Forte filed an affidavit notifying the Court that, as required by the Mootness Order, it had filed the September 20, 2024 Form 8-K. In accordance with the Mootness Order, the Court subsequently closed the case.

Forte Biosciences, Inc. v. Camac Fund, LP, et al., Case No. 3:23-cv-02399-N (N.D. Tex.)

On October 28, 2023, the Company filed a complaint (the “Texas Complaint”), captioned Forte Biosciences, Inc. v. Camac Fund, LP, et al., Case No. 3:23-cv-02399-N, in the U.S. District Court for the Northern District of Texas, against Camac Fund, LP, Camac Partners, LLC, Camac Capital, LLC, and Eric Shahinian (collectively, “Camac”), as well as against Michael G. Hacke, Chris McIntyre, McIntyre Partnerships, LP, McIntyre Capital GP, LLC, McIntyre Capital Management, LP, McIntyre Capital Management GP, LLC, ATG Fund II LLC, ATG Capital Management, LLC, Gabriel Gliksberg, Funicular Funds, LP, The Funicular Fund, LP, Cable Car Capital LLC, Jacob Ma-Weaver, BML Investment Partners, L.P., BML Capital Management, LLC, and Braden M. Leonard (collectively with Camac, the “Texas Defendants”). The Texas Complaint alleged that the Texas Defendants issued false and misleading disclosures in connection with their efforts to elect two directors to Forte’s board of directors at the 2023 annual meeting. The Texas Defendants moved to dismiss and on June 11, 2024, the Complaint was dismissed with prejudice.

In October 2024, to resolve all claims and potential claims asserted by the parties, the Texas Defendants entered into a settlement agreement and release with Forte, and all Texas Defendants other than Camac entered into standstill and voting agreements that are similar to the agreement Camac entered into in June 2024. The Company paid $650 thousand related to these agreements which does not include any potential insurance recoveries. The Company expenses legal fees as they are incurred.

Forte Biosciences, Inc. v. Wesco Insurance Co., et al., Case No. N24C-10-015 VLM CCLD (Del. Super. Ct.)

On October 1, 2024, the Company filed a complaint (the “Wesco Complaint”), captioned Forte Biosciences, Inc. v. Wesco Insurance Co., et al., Case No. N24C-10-015 VLM CCLD, in the Superior Court of the State of Delaware, against its current and former carriers of Directors & Officers liability insurance, Wesco Insurance Company, Beazley Insurance Company, and Palms Insurance Company, Limited (collectively, “Insurance Defendants”). The Wesco Complaint brings claims for declaratory relief, breach of contract, and bad faith, alleging that the Insurance Defendants breached their contractual and legal obligations by refusing to acknowledge and perform their obligation to provide insurance coverage to the Company in connection with: (i) the action captioned Camac Fund, LP v. Paul A. Wagner, et al., C.A. No. 2023-0817-MTZ (Del. Ch.), described above; (ii) a books and records action brought by Camac in November 2022, which was captioned Camac Fund L.P. v. Forte Biosciences Inc., C.A. No. 2022-1075-NAC (Del. Ch.), described above; and (iii) two books demands for books and records under Delaware General Corporation Law Section 220, made by Camac on August 26, 2022 and August 23, 2023, respectively. The Complaint seeks a declaratory judgment that one or more of the Insurance Defendants have an obligation to provide insurance coverage to the Company and the named defendants in the referenced actions, reimbursement and compensatory damages from the Insurance Defendants for breach of contract, and consequential and punitive damages for the Insurance Defendants’ bad faith coverage positions.