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Related Party Transactions | 12 Months Ended
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Dec. 31, 2025
Related Party Transactions [Abstract] |
Related Party Transactions | Related Party Transactions As of December 31, 2025 and 2024, the Company had equity ownership in LanzaJet and SGLT (see Note 5 — Investments for further details). The table below summarizes amounts related to transactions with these related parties (in thousands):
| December 31,
| 2025 |  | 2024
Accounts receivable | $ | 2,281 |  |  | $ | 2,452 |
Contract assets | — |  |  | 399 |
Notes receivable | — |  |  | 5,789 |
Accounts payable | $ | — |  |  | $ | 234 |
The following table presents revenue from related parties per disaggregated revenue categories:
|  |  | Years Ended December 31,
|  |  |  |  | 2025 |  | 2024
Revenue from related parties, included within Licensing |  |  |  |  | $ | 19,843 |  |  | $ | 11,297 |
Revenue from related parties, included within Engineering and other services |  |  |  |  | 654 |  |  | 1,784 |
The main transactions with related parties are described below: LanzaJet The Company and LanzaJet have entered into a master service agreement defining the terms when LanzaJet is a subcontractor for some of the Company’s projects, and conversely, when the Company is a subcontractor for LanzaJet’s projects. The accounts payable balance is for work that LanzaJet performed as a subcontractor to the Company. In connection with the formation of LanzaJet, the Company entered into a transition services agreement with LanzaJet, primarily for the access and use of certain equipment and spaces. For the years ended December 31, 2025 and 2024, the Company recognized immaterial amounts of revenue from related parties, in connection with this agreement. In addition to the licensing and sublicensing of its intellectual property, pursuant to the Original Investment Agreement as described in Note 5 — Investments, the Company provides certain engineering and other services related to a gas-to-jet demonstration plant currently in development by LanzaJet and other projects whereby LanzaJet is the customer. As the project has reached completion, the Company recognized immaterial amounts of revenue for ad-hoc services during the years ended December 31, 2025 and 2024. In December 2023, LanzaTech sold LanzaJet the right to utilize some of LanzaTech’s completed engineering work as a basis for future LanzaJet projects for a price of $2,000 and recorded a $2,000 receivable. The payment will be offset against the license fees LanzaTech would pay to LanzaJet for the use of their technology in the Company’s projects. A license agreement is in process and is expected to be executed in 2026, at which time the Company’s $2,000 receivable as of December 31, 2025, will be reduced to the extent of payments due and payable under the license agreement. The Company recognized $231 and $231 in deferred profit for the years ended December 31, 2025 and 2024. In May 2020, the Company entered into an agreement to lease certain land to a subsidiary of LanzaJet and recognized lease revenue on a straight-line basis over the life of the lease agreement. Refer to Note 18 — Leases, for additional information. Second A&R LanzaJet Investment Agreement On October 16, 2025 the Company, LanzaJet, British Airways PLC (“British Airways”), Mitsui & Co., Ltd. (“Mitsui”), Shell Ventures LLC (“Shell”) and Suncor Energy Inc. (“Suncor”) (collectively, the “LanzaJet Investment Parties”) entered into a Second Amended and Restated Investment Agreement (the “Second A&R LanzaJet Investment Agreement”), which amends and restates the provisions of the LanzaJet Investment Agreement, a Second Amended and Restated Stockholders’ Agreement (the “Second A&R LanzaJet Stockholders’ Agreement”), which amends and restates the provisions of the LanzaJet Stockholders’ Agreement (as defined below), and an amendment to the LanzaJet License Agreement (the “LanzaJet License Agreement Amendment” and, together with the Second A&R LanzaJet Investment Agreement and Second A&R LanzaJet Stockholders’ Agreement, the “LanzaJet Amendments”) to update the structure of the LanzaJet Agreements and to reflect other changes agreed to by the LanzaJet Investment Parties. Among other changes, the Second A&R LanzaJet Investment Agreement eliminates the SPE Investment Condition and provides that LanzaJet will issue to the Company (1) a second tranche of 15,000,000 LanzaJet shares on a date promptly following the execution of the Second A&R LanzaJet Investment Agreement and (2) a third tranche of 15,000,000 LanzaJet shares no later than December 31, 2025, subject to achieving a certain development milestone. The Second A&R LanzaJet Investment Agreement also provides any LanzaJet Investment Party that has made a loan or other extension of credit to LanzaJet’s subsidiary, Freedom Pines Fuels LLC, the right, exercisable at any time and from time to time, to elect to convert all or any portion of the outstanding principal and accrued but unpaid interest of such loan into a number of LanzaJet shares equal to the amount of the loan (principal and, at the lender’s option, accrued interest) being converted, divided by a conversion price equal to the fair market value of a share of LanzaJet common stock as determined in good faith by a majority of disinterested directors of the board of directors of LanzaJet. The LanzaJet License Agreement Amendment removes restrictions on the licensing of LanzaJet technology to third party sublicensees prior to satisfaction of the SPE Investment Condition, makes conforming changes reflecting the Second A&R LanzaJet Investment Agreement and effects other agreed modifications. The LanzaJet License Agreement Amendment also eliminates the Company’s right to terminate the LanzaJet License Agreement if certain commercial facility development milestones have not been met by December 31, 2025. Additionally, the Company committed to using commercially reasonable efforts to promptly assign the Battelle License to LanzaJet. LanzaJet Stockholders’ Agreement In connection with the Investment Agreement, on April 1, 2021, the Company entered into an amended and restated stockholders’ agreement with LanzaJet, Shell, Mitsui, British Airways and Suncor (as amended, the “LanzaJet Stockholders’ Agreement”). Under the LanzaJet Stockholders’ Agreement, each party is required to hold and vote its shares of LanzaJet stock to ensure that LanzaJet’s board of directors (the “LanzaJet board”) is composed of eight directors: one designee from each of British Airways, Mitsui, Suncor and Shell, two LanzaTech designees (one of which will be the chairperson), LanzaJet’s chief executive officer, and one independent director. Each party must hold a certain number of shares of LanzaJet common stock in order to maintain their respective designated board seats. Pursuant to the agreement, if a party votes to remove its designated director from the LanzaJet board, the other parties must also vote in favor of removal. If a party fails to comply with its obligations under the second tranche investments provided for in the LanzaJet Investment Agreement, the other parties may vote to remove that party’s designee, and such party will forfeit its designated LanzaJet board seat in exchange for the right to designate a non-voting observer to the LanzaJet board. The agreement also provides that the parties must vote their shares in favor of a proposed change of control transaction and take all reasonable steps necessary to execute the transaction if it meets certain standards and is approved by us, the LanzaJet board, and any investor holding a certain number of LanzaJet shares. The parties to the LanzaJet Stockholders’ Agreement may not transfer their LanzaJet shares until 2026, except for permitted transfers to affiliates. LanzaJet has a right of first refusal with regard to all transfers of LanzaJet shares to third parties (including in connection with a change of control with respect to the applicable party’s ultimate parent) and if LanzaJet declines to exercise this right, the other parties to the agreement are entitled to a pro rata right of first refusal. We and the other parties will also have a pro rata right of first refusal with regard to new LanzaJet shares issued as well as a put right with respect to LanzaJet shares that we and such parties hold upon the occurrence of certain conditions. The LanzaJet Stockholders’ Agreement also provides registration rights in connection with an initial public offering of or other registration of LanzaJet shares. Each party to the LanzaJet Stockholders’ Agreement agrees to indemnify the other parties for all claims arising from such party’s breach of the agreement or from fraud, gross negligence, or willful misconduct with regard to the agreement. The LanzaJet Stockholders’ Agreement will terminate either with the consent of all of the parties or upon an initial public offering of LanzaJet shares or a specified liquidation event. LanzaJet Note Purchase Agreement On November 9, 2022, the Company and the other LanzaJet shareholders entered into a Note Purchase Agreement (the “LanzaJet Note Purchase Agreement”), pursuant to which LanzaJet Freedom Pines Fuels LLC (“FPF”), a wholly owned subsidiary of LanzaJet, issued and sold notes in an aggregate principal amount of up to $147,000 (the “Notes”), comprised of approximately $113,500 aggregate principal amount of 6.00% Senior Secured Notes maturing December 31, 2043 (the “Senior Secured Notes”) and $33,500 aggregate principal amount of 6.00% Subordinated Secured Notes maturing December 31, 2043 (the “Subordinated Secured Notes”). The Company committed and funded $5,500 of Subordinated Secured Notes on May 1, 2023. The Senior Secured Notes are secured by a security interest over substantially all assets of FPF, and both the Senior Secured Notes and the Subordinated Secured Notes are secured by a security interest over the intellectual property owned or in-licensed by LanzaJet. Each purchaser of Notes under the LanzaJet Note Purchase Agreement also received a warrant for the right to purchase 575,000 shares of common stock of LanzaJet for each $10,000 of Notes purchased by such purchaser for an exercise price of $0.01 per share. Accordingly, the Company received warrants to purchase 316,250 shares of common stock of LanzaJet, and exercised them in January 2024. The LanzaJet Note Purchase Agreement may be amended with the approval of holders of at least 66 2∕3% of the Notes, except with respect to certain rights that require approval of all holders to amend. Upon an event of default under the LanzaJet Note Purchase Agreement, each purchaser may accelerate the payment of its own Notes. Enforcement against the collateral securing the Notes requires the approval of certain holders as specified in the Notes. As of December 31, 2025, the carrying amount of the note receivable from LanzaJet was reduced to zero along with the Company’s previous equity method investment in LanzaJet. These reductions reflect LanzaJet’s share of losses attributable to the Company under the equity method accounting. As the Company’s share of losses exceeded its investment balance the Company previously tracked additional losses off-balance sheet. As of December 31, 2025 the carrying amount of the Company’s current equity method investment in LanzaJet was $13,272 as a result of LanzaJet sublicensing our technology to two of their customers. The Company’s share of future LanzaJet’s losses will first be applied to this investment balance prior to being tracked off-balance sheet. The Company will continue to monitor LanzaJet’s financial results and track its share of any future off-balance sheet activity until profits exceed off-balance sheet losses in which those profits will be recorded to Income (loss) from equity method investees, net in our consolidated statements of operations and comprehensive loss. (See Note 5 — Investments). In February 2026, the Second A&R LanzaJet Investment Agreement, the Stockholders’ Agreement, LanzaJet Stockholders’ Agreement and the LanzaJet Note Purchase Agreement were amended. See “Note 19 – Subsequent Events”. SGLT The Company supplies SGLT with certain water-soluble organic compounds required in the Company's proprietary gas fermentation process, small-size equipment and consulting services. For the years ended December 31, 2025 and 2024, the Company recognized an immaterial amount of revenue. The Company also provided engineering services and incurred costs of $716 and $1,017 for the years ended December 31, 2025 and 2024, respectively.

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