UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of report (Date of earliest event reported): November 6, 2025

Tailwind 2.0 Acquisition Corp.

(Exact name of registrant as specified in its charter)

(917) 882-3724

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01. Entry into a Material Definitive Agreement.

On November 5, 2025, the registration statement on Form S-1 (File No. 333-289546) (the “Registration Statement”) relating to the initial public offering (the “Offering”) of Tailwind 2.0 Acquisition Corp., a Cayman Islands exempted company (the “Company”), became effective.

On November 10, 2025, the Company consummated the Offering of 17,250,000 units (the “Units”), which included the full exercise of the underwriters’ over-allotment option. Each Unit consists of one class A ordinary share, par value $0.0001 per share (the “Class A Ordinary Shares”), and one right (each, a “Right”) entitling the holder thereof to receive one-tenth of one Class A Ordinary Share upon the completion of an initial business combination. The Units were sold at an offering price of $10.00 per Unit, generating gross proceeds of $172,500,000.

In connection with the Offering, the Company entered into the following agreements, forms of which were previously filed as exhibits to the Registration Statement:

Item 3.02. Unregistered Sales of Equity Securities.

On November 10, 2025, simultaneously with the consummation of the Offering, the Company consummated the private placement of an aggregate of 545,000 units (the “Private Placement Units”) to the Sponsor and CCM at a price of $10.00 per Private Placement Unit, generating gross proceeds of $5,450,000 (the “Private Placement”). No underwriting discounts or commissions were paid with respect to the Private Placement. The Private Placement was conducted as a non-public transaction and, as a transaction by an issuer not involving a public offering, is exempt from registration under the Securities Act of 1933, as amended (“Securities Act”), in reliance upon Section 4(a)(2) of the Securities Act. The Private Placement Units are identical to the Units, except that the Private Placement Units are subject to certain transfer restrictions described in the Registration Statement.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Effective as of November 6, 2025, the following individuals were appointed to the board of directors of the Company: Ralph Alexander, Evan Caron, Andreas Penna, Alan Sheriff, and Tommy Stadlen. Additional information regarding, among other things, each individual’s background, board committee membership and compensatory arrangements is contained in the Registration Statement and is incorporated herein by reference.

Item 8.01. Other Events.

On November 10, 2025, the Company filed its amended and restated memorandum and articles of association (the “Amended Articles”) with the Registrar of Companies in the Cayman Islands. Among other things, the Amended Articles authorize the issuance of up to 200,000,000 Class A ordinary shares, 20,000,000 Class B ordinary shares, and 1,000,000 preference shares par value $0.0001 per share. The terms of the Amended Articles are set forth in the Registration Statement and are incorporated herein by reference. The foregoing description of the Amended Articles is qualified in its entirety by reference to the full text of the Amended Articles, which is filed as Exhibit 3.1 to this Current Report on Form 8-K and incorporated herein by reference.

A total of $172,500,000 of the net proceeds from the Offering and the Private Placement was placed in a trust account established for the benefit of the Company’s public shareholders (the “Trust Account”), with Efficiency acting as trustee. Except with respect to interest earned on the funds held in the Trust Account that may be released to the Company to pay its taxes, if any, the funds held in the Trust Account will not be released from the Trust Account until the earliest to occur of: (a) the completion of the Company’s initial business combination, (b) the redemption of all of the Class A Ordinary Shares included in the Units sold in the Offering (“public shares”) if the Company is unable to complete its initial business combination within 24 months from the closing of the Offering or such later time as the shareholders of the Company may approve in accordance with the Amended Articles, subject to applicable law, and (c) the redemption of any public shares properly tendered in connection with a shareholder vote to amend the Amended Articles (A) to modify the substance or timing of the Company’s obligation to redeem 100% of its public shares if the Company does not complete its initial business combination within 18 months from the closing of the Offering or (B) with respect to any other provision relating to shareholders’ rights or pre-initial business combination activity.

On November 6, 2025, the Company issued a press release announcing the pricing of the Offering, a copy of which is filed as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: November 12, 2025