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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Litigation The Company is, and may from time to time be, involved in legal proceedings and exposed to potential claims in the normal course of business. Schara litigation In May 2024, a putative class action complaint (the “Complaint”) was filed in the Delaware Court of Chancery against LanzaTech f/k/a/ AMCI, AMCI Sponsor II LLC (“AMCI Sponsor”) and the individual directors of AMCI (the “Director Defendants”) for purported damages arising from the Business Combination. The Company was subsequently voluntarily dismissed from the case in July 2024, before it was required to respond to the Complaint. The Complaint asserts claims for (i) breach of fiduciary duty against the Director Defendants; and (ii) unjust enrichment against AMCI Sponsor and the Director Defendants. As the surviving entity following the merger at issue, the Company has certain indemnification obligations to the Director Defendants in connection with the defense of the litigation. The Director Defendants have agreed to a settlement amount which was approved by the Court on March 4, 2026, and will be funded by the Company in April. The Company has notified the relevant D&O insurance carriers of the litigation and while the Director Defendants are covered for such costs by directors’ and officers’ insurance, such coverage is subject to a retention of $5,000. FPA litigation In relation to the FPA, the Company’s volume-weighted average share price was below $3.00 per share for 50 trading days during the 60 day consecutive trading period ended on July 1, 2024 (the “VWAP Trigger Event”). On July 22, 2024, Vellar (one of the Purchasers) notified the Company of a VWAP Trigger Event, purporting to accelerate the FPA Maturity Date of its portion of the Recycled Shares (i.e., 2,990,000 shares at such date, prior to the Reverse Stock Split) to July 22, 2024. Vellar asserts that it is entitled to: (i) the Maturity Consideration of $7,500 (payable at the Company’s option in cash or shares of common stock valued at the average daily VWAP Price (as defined in the FPA) over 30 scheduled trading days ending on the accelerated FPA Maturity Date of July 22, 2024 of $1.91 per share, prior to the Reverse Stock Split) and (ii) Share Consideration of $2,539, payable in cash, in each case, due and payable on July 24, 2024. On July 25, 2024 the Company received a notice from Vellar pursuant to the FPA, stating that the Company is in default of its payment obligations. On July 30, 2024, the Company received a notice of an event of default under the FPA from Vellar that (i) designated such date as the early termination date of the FPA and (ii) purports to result in an early termination cash payment of $4,164 becoming due to Vellar (equating to the sum of the Maturity Consideration and the Share Consideration minus the VWAP Price (as defined in the FPA) (as of July 29, 2024) of Vellar’s portion of the Recycled Shares). On July 24, 2024, LanzaTech filed suit in New York state court against Vellar, primarily in connection with Vellar’s sale of Recycled Shares, which LanzaTech alleged were in breach of the FPA’s requirement that Recycled Shares be held in a bankruptcy remote special purpose vehicle for the benefit of the Company unless the sale was noticed to the Company as part of an early termination, which Vellar had not done. LanzaTech believes that Vellar’s notice regarding the VWAP Trigger Event and consequently, its notice of an event of default, is not valid and accordingly, that no payments are owed to Vellar in connection with the purported acceleration of the FPA Maturity Date or early termination of the FPA. In August 2024, Vellar removed this state court action to the federal court in the Southern District of New York. In September 2024 LanzaTech filed an amended complaint alleging breach of contract, breach of the duty of good faith and fair dealing and unjust enrichment. In October 2024, Vellar filed a motion to dismiss the amended complaint and in November 2024 Company filed an opposition to the motion. Vellar’s October 2024 motion to dismiss was granted as to the breach of contract and unjust enrichment claims and denied as to the claimed breach of the duty of good faith and fair dealing. On October 23, 2024, Vellar filed a countersuit against the Company in federal court in the Southern District of New York, alleging breach of the FPA, and seeking $4,164 plus interest. On October 24, 2024, Vellar sought advancement of certain expenses from the Company in connection with this litigation. The Company denied the request on October 28, 2024. Vellar filed a motion for advancement of fees on November 20, 2024, which LanzaTech opposed and which was subsequently denied. In April 2025, Vellar filed a motion to amend its complaint and a motion to consolidate the two related actions between LanzaTech and Vellar. Both motions were granted and the two suits were consolidated in April 2025. Vellar filed its amended complaint on April 23, 2025, adding a claim for breach of the FPA Warrants, to which LanzaTech and Vellar are parties and seeking damages, including liquidated damages under the FPA Warrants. LanzaTech filed an answer to the amended complaint on May 14, 2025. In February 2026, LanzaTech and Vellar agreed to a settlement and compromise of the consolidated actions, including a cash settlement payment made to Vellar by LanzaTech in February 2026. The parties subsequently filed stipulations of voluntary dismissal which were granted on March 5, 2026. Thus, the FPA litigation has concluded. Convertible Note Litigation On May 16, 2025, Carbon Direct Capital, the former holder of the Convertible Note, commenced a lawsuit against the Company in the Supreme Court of the State of New York (“Supreme Court”). The complaint filed in the action contends that the mandatory conversion of the Convertible Note formerly held by Carbon Direct Capital in connection with the Series A Preferred Stock Issuance, is invalid under the terms of the Convertible Note, and even if a mandatory conversion had occurred, Carbon Direct Capital would be entitled to consideration in the form of Series A Preferred Stock and PIPE Warrant rather than the shares of common stock that the Company issued to Carbon Direct Capital in the mandatory conversion. Simultaneously with filing the complaint, Carbon Direct Capital moved via order to show cause for a temporary restraining order and preliminary injunction voiding the mandatory conversion under the Convertible Note and sought expedited discovery. On May 21, 2025, the Supreme Court denied Carbon Direct Capital’s request for a temporary restraining order. On June 13, 2025, the Supreme Court denied Carbon Direct Capital’s motion for a preliminary injunction. On July 3, 2025, the Supreme Court granted the Company’s motion to dismiss Carbon Direct Capital’s complaint in full, finding that plaintiff had failed to state a claim for breach of contract or breach of the implied covenant of good faith and fair dealing. On August 1, 2025, Carbon Direct Capital filed a notice of appeal to the Appellate Division, First Department of the Supreme Court’s decision dismissing the complaint. On January 27, 2026, the First Department unanimously affirmed the Supreme Court’s dismissal of Carbon Direct Capital’s complaint in full. The deadline for Carbon Direct Capital to file an application for leave to appeal to the New York Court of Appeals was February 26, 2026, and no application was filed. On June 30, 2025, Carbon Direct Capital commenced a separate lawsuit in the Delaware Court of Chancery. The complaint filed in the action contended that the proxy statement for the July 28, 2025 annual meeting of stockholders contained material misstatements or omissions. Carbon Direct Capital moved for expedited proceedings and requested a schedule on a motion for preliminary injunction. On July 11, 2025, the Court of Chancery denied Carbon Direct Capital’s motion to expedite. On July 28, 2025, the Company moved to dismiss the complaint. On August 5, 2025, Carbon Direct Capital filed a notice of voluntary dismissal of the action.

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