FORWARD PURCHASE AGREEMENT

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Exhibit 10.8
This Forward Purchase Agreement (this “Agreement”) is entered into as of , 2026, by and between TCGX Acquisition Corp. II, an exempted company under the laws of the Cayman Islands (the “Company”), and TCG Crossover Fund III, LP, a Delaware limited partnership (the “Purchaser”).
WHEREAS, the Company was incorporated for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses (a “Business Combination”);
WHEREAS, the Company has filed with the U.S. Securities and Exchange Commission (the “SEC”) a registration statement on Form S-1 (the “Registration Statement”) for its initial public offering (“IPO”) of 10,000,000 Class A ordinary shares, par value $0.0001 per share (the “Class A Shares”, and the Class A Shares sold in the IPO, the “Public Shares”) at a price of $10.00 per Public Share;
WHEREAS, the Company’s sponsor, TCGX Sponsor II, LLC (the “Sponsor”) has agreed to purchase an aggregate of 450,000 Class A ordinary shares at a price of $10.00 per share in a private placement that will close simultaneously with the closing of the IPO (the “Private Placement Shares”);
WHEREAS, following the closing of the IPO (the “IPO Closing”), the Company will seek to identify and consummate a Business Combination;
WHEREAS, the parties wish to enter into this Agreement, pursuant to which concurrently with the closing of the Company’s initial Business Combination (the “Business Combination Closing”), the Company shall issue and sell to the Purchaser, and the Purchaser shall purchase from the Company, on a private placement basis, subject to the conditions described in Section 7 hereof, 2,000,000 Class A ordinary shares (the “Forward Purchase Shares”);
WHEREAS, proceeds from the IPO and the sale of the Private Placement Shares in an aggregate amount equal to the gross proceeds from the IPO will be deposited into a trust account for the benefit of the holders of the Public Shares (the “Trust Account”), as described in the Registration Statement; and
WHEREAS, the amounts available to the Company from the Trust Account and any other equity or debt financing obtained by the Company in connection with the Business Combination, together with the proceeds from the sale of the Forward Purchase Shares, will be used to satisfy the cash requirements of the Business Combination, including funding the purchase price and paying expenses and retaining amounts specified in the definitive agreement for the Business Combination to be retained for use by the post-Business Combination company for working capital or other purposes;
NOW, THEREFORE, in consideration of the premises, representations, warranties and the mutual covenants contained in this Agreement, and for other good and valuable consideration, the receipt, sufficiency and adequacy of which are hereby acknowledged, the parties hereto agree as follows:
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In the event of any termination of this Agreement pursuant to this Section 8, the Forward Purchase Price (and interest thereon, if any), if previously paid, and all Purchaser’s funds paid in connection herewith shall be promptly returned to the Purchaser, and thereafter this Agreement shall forthwith become null and void and have no effect, without any liability on the part of the Purchaser or the Company and their respective directors, officers, employees, partners, managers, members, or shareholders and all rights and obligations of each party shall cease; provided, however, that nothing contained in this Section 8 shall relieve either party from liabilities or damages arising out of any fraud or willful breach by such party of any of its representations, warranties, covenants or agreements contained in this Agreement.
All communications to the Purchaser shall be sent to the Purchaser’s address as set forth on the signature page hereof, or to such e-mail address, facsimile number (if any) or address as subsequently modified by written notice given in accordance with this Section 9(a).
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[Signature Page Follows]
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IN WITNESS WHEREOF, the undersigned have executed this Agreement to be effective as of the date first set forth above.
PURCHASER: TCG CROSSOVER FUND III, LP By: Name: ▇▇▇▇ ▇▇, M.D., M.B.A. Title: Chief Executive Officer Address for notices: ▇▇▇ ▇▇▇▇▇▇ ▇▇▇., ▇▇▇▇▇ ▇▇▇, ▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇: ▇▇▇@▇▇▇▇▇▇▇▇▇▇▇▇.▇▇▇ |
COMPANY: By: Name: ▇▇▇▇ ▇▇, M.D., M.B.A. Title: Chief Executive Officer |
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