Amendment No. 1 to Investment Management Trust Agreement, dated December 19, 2022, by and between TLG Acquisition One Corp. and Continental Stock Transfer & Trust Company, as trustee

Exhibit 10.1

Execution Version

AMENDMENT NO. 1 TO THE INVESTMENT MANAGEMENT TRUST AGREEMENT

THIS AMENDMENT NO. 1 TO THE INVESTMENT MANAGEMENT TRUST AGREEMENT (this “Amendment”) is made as of December 19, 2022, by and between TLG Acquisition One Corp., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation (the “Trustee”). Capitalized terms contained in this Amendment, but not specifically defined in this Amendment, shall have the meanings ascribed to such terms in that certain Investment Management Trust Agreement, dated January 27, 2021, by and between the parties hereto (the “Trust Agreement”).

WHEREAS, $400,000,000 of the gross proceeds from the Offering and sale of the Private Placement Warrants was deposited into the Trust Account;

WHEREAS, Section 1(i) of the Trust Agreement provides that the Trustee is to liquidate the Trust Account and distribute the Property in the Trust Account only after and promptly after (x) receipt of, and only in accordance with, the terms of a Termination Letter; or (y) the date which is 24 months after the closing of the Offering if a Termination Letter has not been received by the Trustee prior to such date;

WHEREAS, Section 6(c) of the Trust Agreement provides that Section 1(i) of the Trust Agreement may not be modified, amended or deleted without the affirmative vote of sixty-five percent (65%) of the then outstanding shares of Common Stock and Class F common stock, par value $0.0001 per share, of the Company, voting together as a single class;

WHEREAS, the Company obtained the requisite vote of the stockholders of the Company to approve this Amendment; and

WHEREAS, each of the Company and Trustee desire to amend the Trust Agreement as provided herein.

NOW, THEREFORE, in consideration of the mutual agreements contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intending to be legally bound hereby, the parties hereto agree as follows:

1. Amendment to Section 1(i). Section 1(i) of the Trust Agreement is hereby amended and restated in its entirety as follows:

2. Addition of Section 1(m). A new Section 1(m) shall be added as follows:

3. Amendments to Definitions.

(i) Capitalized terms used herein and not otherwise defined shall have the meanings ascribed to them in the Trust Agreement. The following defined term in the Trust Agreement shall be amended and restated in their entirety:

“Trust Agreement” shall mean that certain Investment Management Trust Agreement, dated January 27, 2021, by and between TLG Acquisition One Corp. and Continental Stock Transfer & Trust Company, as amended by the Amendment No. 1 to the Investment Management Trust Agreement dated [•], 2022.”; and

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(ii) The term “Property” shall be deemed to include any Contribution paid to the Trust Account in accordance with the terms of the Amended and Restated Certificate of Incorporation and the Trust Agreement.

4. Addition of Exhibit E. A new Exhibit E of the Trust Agreement is hereby added as follows:

EXHIBIT E

[Letterhead of Company]

[Insert date]

Continental Stock Transfer & Trust Company

1 State Street, 30th Floor

New York, New York 10004

Attn: Francis Wolf and Celeste Gonzalez

Re: Trust Account — Extension Letter

Dear Mr. Wolf and Ms. Gonzalez:

Pursuant to paragraphs 1(i) and 1(m) of the Investment Management Trust Agreement between TLG Acquisition One Corp. (the “Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of January 27, 2021, as amended by the Amendment No. 1, dated December 19, 2022 (the “Trust Agreement”), this is to advise you that the Company is extending the time available in order to consummate a Business Combination with the Target Businesses for an additional one month, from [•], 2023 to [•], 2023 (the “Extension”). Capitalized words used herein and not otherwise defined shall have the meanings ascribed to them in the Trust Agreement. This Extension Letter shall serve as the notice required with respect to Extension prior to the applicable termination date (as may be extended in accordance with Section 1(i) of the Trust Agreement). In accordance with the terms of the Trust Agreement, we hereby authorize you to deposit a contribution in the amount of $[•] for such one-month extension until [•], 2023, unless the Closing of the Company’s initial business combination shall have occurred, which will be wired to you, into the Trust Account upon receipt.

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5.1. Successors. All the covenants and provisions of this Amendment by or for the benefit of the Company or the Trustee shall bind and inure to the benefit of their permitted respective successors and assigns.

5.2. Severability. This Amendment shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect the validity or enforceability of this Amendment or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this Amendment a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable.

5.3. Applicable Law. This Amendment shall be governed by and construed and enforced in accordance with the laws of the State of New York.

5.4. Counterparts. This Amendment may be executed in several original or facsimile counterparts, each of which shall constitute an original, and together shall constitute but one instrument.

5.5. Effect of Headings. The section headings herein are for convenience only and are not part of this Amendment and shall not affect the interpretation thereof.

5.6. Entire Agreement. The Trust Agreement, as modified by this Amendment, constitutes the entire understanding of the parties and supersedes all prior agreements, understandings, arrangements, promises and commitments, whether written or oral, express or implied, relating to the subject matter hereof, and all such prior agreements, understandings, arrangements, promises and commitments are hereby canceled and terminated.

[Signature Page to Follow]

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IN WITNESS WHEREOF, the parties have duly executed this Amendment as of the date first written above.

[Signature Page to the Amendment to the Investment Management Trust Agreement]