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): December 16, 2025 (December 12, 2025)

Invest Acquisition Corporation

(Exact name of registrant as specified in its charter)

+1 (345) 949-5122

(Registrant’s telephone number, including area code)

Investcorp Europe Acquisition Corp I

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

Check the appropriate box below if the Form 8-K filing 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 Securities Exchange Act of 1934:

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. ☐

On December 12, 2025, Investcorp Europe Acquisition Corp I, a Cayman Islands exempted company (the “Company”), held an extraordinary general meeting of its shareholders (the “Meeting”). Shareholder approval of the matters set forth below was obtained at the Meeting by the holders of approximately 99% of the issued and outstanding voting shares of the Company. An Information Statement relating to the Meeting was furnished to shareholders pursuant to Section 14(c) of the Securities Exchange Act of 1934, as amended, and Rule 14c-1 thereunder.

At the Meeting, the shareholders approved certain amendments to the Company’s Amended and Restated Memorandum and Articles of Association as described below.

Name Change

At the Meeting, by special resolution, the shareholders approved the change of the Company’s name from “Investcorp Europe Acquisition Corp I” to “Invest Acquisition Corporation” (the “Name Change”). The Name Change was approved with 10,625,000 votes in favor, representing approximately 99.76% of the outstanding ordinary shares, and no votes against.

Extension of Business Combination Deadline

At the Meeting, by special resolution, the shareholders approved an extension of the date by which the Company must consummate a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses or entities from December 17, 2025 to December 17, 2027 (the “Extension”). The Extension was approved with 10,625,000 votes in favor, representing approximately 99.76% of the outstanding ordinary shares, and no votes against.

Adoption of Second Amended and Restated Memorandum and Articles of Association

In connection with the approval of the Name Change and the Extension, the Company’s Amended and Restated Memorandum and Articles of Association were amended and restated in their entirety and replaced with the Second Amended and Restated Memorandum and Articles of Association (the “Second A&R M&A”). The Second A&R M&A reflects the Name Change and amends Article 49.5 to extend the date by which the Company must consummate a business combination to December 17, 2027.

The foregoing descriptions of the Name Change and the Extension are summaries only and are qualified in their entirety by reference to the full text of the Second A&R M&A, a copy of which is filed as Exhibit 3.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Extraordinary General Meeting Results

As of November 23, 2025, the record date for the Meeting, there were 10,650,520 ordinary shares of the Company issued and outstanding, consisting of 10,650,519 Class A ordinary shares and one Class B ordinary share. At the Meeting, 10,625,000 ordinary shares were represented, constituting approximately 99.76% of the issued and outstanding ordinary shares and a quorum for the transaction of business.

Both proposals submitted to shareholders at the Meeting were approved, with 10,625,000 votes in favor and no votes against for each proposal.

Redemptions

In connection with the Extension, shareholders had the opportunity to redeem their public shares. As of the redemption deadline of 5:00 p.m. Eastern Time on December 10, 2025, holders of 18,226 Class A ordinary shares exercised their right to redeem such shares for a pro rata portion of the funds held in the Company’s trust account.

(d) Exhibits

SIGNATURES

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.