Exhibit 10.1

EXTENSION AMENDMENT

2^ND AMENDMENT TO THE INVESTMENT MANAGEMENT TRUST

AGREEMENT OF

CSLM ACQUISITION CORP.

THIS SECOND AMENDMENT TO THE INVESTMENT MANAGEMENT TRUST AGREEMENT (this “Amendment”) is made as of July 14, 2025, by and between CSLM ACQUISITION CORP., a Cayman Islands company (the “Company”), and Continental Stock Transfer & Trust Company (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 12, 2022, as amended, by and between the parties hereto (the “Trust Agreement”).

WHEREAS, the Company further obtained the approval of the holders of the affirmative vote of at least a two-thirds majority of the votes cast by the holders of the issued and outstanding Class A Ordinary Shares and Class B Ordinary Shares, voting as a single class;

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.	Amendments to Trust Agreement.

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

(i) Commence liquidation of the Trust Account only after and promptly after (x) receipt of, and only in accordance with, the terms of a letter from the Company (“Termination Letter”) in a form substantially similar to that attached hereto as either Exhibit A or Exhibit B signed on behalf of the Company by its Chief Executive Officer, Chief Financial Officer, Chief Operating Officer or Chairman of the board of directors of the Company (the “Board”) or other authorized officer of the Company, and complete the liquidation of the Trust Account and distribute the Property in the Trust Account, including interest (less up to $100,000 of interest that may be released to the Company to pay dissolution expenses and which interest shall be net of any taxes payable, it being understood that the Trustee has no obligation to monitor or question the Company’s position that an allocation has been made for taxes payable), only as directed in the Termination Letter and the other documents referred to therein; provided, that, in the case a Termination Letter in the form of Exhibit A is received, or (y) such later date as extended by the Company on a semi-monthly basis until October 18, 2025 (the “Extended Date”) as set forth in the Company’s amended and restated memorandum and articles of association, as it may be amended from time to time, if a Termination Letter has not been received by the Trustee prior to the Extended Date, in which case the Trust Account shall be liquidated in accordance with the procedures set forth in the Termination Letter attached as Exhibit B and the Property in the Trust Account, including interest (less up to $100,000 of interest that may be released to the Company to pay dissolution expenses and which interest shall be net of any taxes payable), shall be distributed to the Public Shareholders of record as of such date;

(b) Section 1(k) of the Trust Agreement is hereby amended and restated in its entirety as follows:

(k) Upon written request from the Company, which may be given from time to time in a form substantially similar to that attached hereto as Exhibit D (a “Shareholder Redemption Withdrawal Instruction”), the Trustee shall distribute on behalf of the Company the amount requested by the Company to be used to redeem Ordinary Shares from Public Shareholders properly submitted in connection with a shareholder vote to approve an amendment to the Company’s amended and restated memorandum and articles of association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with the Company’s initial merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination involving the Company and one or more businesses (a “Business Combination”) or to redeem 100% of the Company’s public shares if it does not complete its

initial Business Combination on the terms set forth in the Company’s amended and restated memorandum and articles of association, as it may be amended from time to time) provided, however, that in the event that a Termination Letter has not been received by the Trustee by the Extended Date, the Trust Account shall be liquidated in accordance with the procedures set forth in the Termination Letter or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business Combination activity. The written request of the Company referenced above shall constitute presumptive evidence that the Company is entitled to distribute said funds, and the Trustee shall have no responsibility to look beyond said request; and

(b) The second paragraph to Exhibit D of the Trust Agreement is hereby amended and restated in its entirety as follows:

The Company needs such funds to pay its Public Shareholders who have properly elected to have their Public Shares redeemed by the Company in connection with a shareholder vote to approve an amendment to the Company’s amended and restated memorandum and articles of association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with the Company’s initial Business Combination or to redeem 100% of the Company’s public shares if it does not complete its initial Business Combination as described in the Company’s amended and restated memorandum and articles) provided, however, that in the event that a Termination Letter has not been received by the Trustee by the Extended Date the Trust Account shall be liquidated in accordance with the procedures set forth in the Termination Letter or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business Combination activity. As such, you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your receipt of this letter to the redeeming Public Shareholders in accordance with your customary procedures.

2.	Miscellaneous Provisions.

2.1.	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.

2.2.

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.

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

2.4.	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.

2.5.	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.

2.6.

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.

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


CSLM ACQUISITION CORP.

By:		/s/ Charles Cassel
Name:		Charles Cassel
Title:		Chief Executive Officer


Continental Stock Transfer & Trust Company, as Trustee

By:		/s/ Francis Wolf
Name:		Francis Wolf
Title:		Vice President

CSLM ACQUISITION CORP. 8-K