UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by Registrant  ☒

Filed by a Party other than the Registrant  ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

Investcorp Europe Acquisition Corp I

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement if other than the Registrant)

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☒ No fee required

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14A(i)(1) and 0-11.

SUPPLEMENT TO PROXY STATEMENT

OF

INVESTCORP EUROPE ACQUISITION CORP I

Dated November 27, 2023

The following disclosures in this Current Report on Form 8-K supplement, and should be read in conjunction with, the disclosures contained in the Company’s definitive proxy statement (the “Definitive Proxy Statement”), filed with the Securities and Exchange Commission (the “SEC”) on November 9, 2023, which should be read in its entirety. To the extent the information set forth herein differs from or updates information contained in the Definitive Proxy Statement, the information set forth herein shall supersede or supplement the information in the Definitive Proxy Statement. All other information in the Definitive Proxy Statement remains unchanged.

As provided in the Definitive Proxy Statement, the Company is seeking shareholder approval of, among other things, the extension (the “Extension” and such proposal, the “Extension Amendment Proposal”) of the time period during which the Company has to complete an initial business combination from December 17, 2023 to June 17, 2024 (such date, the “Extended Date”). The purpose of the supplemental disclosures is to provide an update on the proposed contributions to the Company’s trust account in connection with the Extension.

Terms used herein, unless otherwise defined, have the meanings set forth in the Definitive Proxy Statement.

Registration Statement on Form F-4

We are not asking you to vote on the Business Combination at this time. The Business Combination will be submitted to shareholders of the Company for their consideration. On November 22, 2023, OpSec Holdings filed a Registration Statement on Form F-4 with the SEC, which includes a proxy statement to be distributed to the Company’s shareholders in connection with the Company’s solicitation for proxies for the vote by the Company’s shareholders in connection with the Business Combination and other matters as described in the definitive proxy statement. After the Registration Statement on Form F-4 has been declared effective, the Company will mail a definitive proxy statement and other relevant documents to its shareholders as of the record date established for voting on the Business Combination. The Company’s shareholders and other interested persons are advised to read the preliminary proxy statement and any amendments thereto and, once available, the definitive proxy statement, in connection with the Company’s solicitation of proxies for its Extraordinary General Meeting to be held to approve, among other things, the Business Combination, because these documents will contain important information about the Company and the Business Combination. Shareholders may also obtain a copy of the preliminary or definitive proxy statement, once available, as well as other documents filed with the SEC regarding the Business Combination and other documents filed with the SEC by the Company, without charge, at the SEC’s website located at www.sec.gov.

Contributions to Trust Account

On November 27, 2023, the Company entered into a non-interest bearing convertible unsecured loan (the “Loan”) in the principal amount of up to $1,250,000 from the Sponsor to provide the Company with additional working capital during the proposed Extension, and to fund the Contributions described herein. If the Extension Amendment Proposal is approved at the Extraordinary General Meeting, the Sponsor has agreed, by making monthly advancements on the Loan, to contribute (each such contribution, a “Contribution”) into the Company’s Trust Account the lesser of (x) an aggregate of $150,000 or (y) $0.02 per share of the public shares that are not redeemed at the Extraordinary General Meeting for each monthly period (commencing on December 17, 2023 and ending on the 17^th day of each subsequent month), or portion thereof, until the earlier of the completion of the initial business combination and the Extended Date. For the avoidance of doubt, the maximum aggregate Contributions to the Trust Account shall not exceed $900,000 based on up to six monthly Contributions through the Extended Date.

The portion of the Loan used to provide the Company with additional working capital during the Extension will not be deposited into the Trust Account.

If the Company does not consummate an initial business combination by the Extended Date, the Loan will be repaid only from funds held outside of the Trust Account or will be forfeited, eliminated or otherwise forgiven. The Contributions are conditioned on the approval of the Extension Amendment Proposal and the implementation of the Extension. If at any time following the Extraordinary General Meeting, the Board determines that the Company will not be able to consummate an initial business combination by the Extended Date and that the Company shall instead liquidate, the Sponsor’s obligation to continue to make Contributions shall cease immediately upon such determination.

Forward-Looking Statements

This communication includes “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements generally relate to future events or the Company’s future financial or operating performance. Certain of these forward-looking statements can be identified by the use of words such as “believes,” “expects,” “intends,” “plans,” “estimates,” “assumes,” “may,” “should,” “will,” “would,” “seem,” “anticipates,” “seeks,” “future,” “predicts,” “potential” or “continue” or the negatives of these terms or variations of them or similar terminology, but the absence of these words does not mean that a statement is not forward-looking. Such statements may include, but are not limited to, statements regarding the proposed Contributions. These statements are based on current expectations on the date of this announcement and involve a number of risks and uncertainties that may cause actual results to differ significantly. Many actual events and circumstances are beyond the control of the Company. These forward looking statements are subject to a number of risks and uncertainties, including: the Company’s ability to enter into definitive agreements or consummate a transaction with an initial business combination target; the amount of redemption requests made by the Company’s shareholders and the amount of funds remaining in the Trust Account after satisfaction of such requests; and those factors discussed in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022 under the heading “Risk Factors,” and other documents of the Company filed, or to be filed, with the SEC. If the risks materialize or assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. There may be additional risks that the Company presently does not know or that the Company currently believes are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. In addition, forward-looking statements reflect the Company’s expectations, plans or forecasts of future events and views as of the date hereof. The Company anticipates that subsequent events and developments will cause the Company’s assessments to change. The Company does not assume any obligation to update or revise any such forward-looking statements, whether as the result of new developments or otherwise. These forward-looking statements should not be relied upon as representing the Company’s assessments as of any date subsequent to the date of this current report. Readers are cautioned not to put undue reliance on forward-looking statements.

Additional Information and Where to Find It

On November 9, 2023, the Company filed the Definitive Proxy Statement with the SEC in connection with its solicitation of proxies for the Extraordinary General Meeting. INVESTORS AND SECURITY HOLDERS OF THE COMPANY ARE URGED TO READ THE DEFINITIVE PROXY STATEMENT (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND OTHER DOCUMENTS THE COMPANY FILES WITH THE SEC CAREFULLY IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE AS THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and security holders will be able to obtain free copies of the Definitive Proxy Statement (including any amendments or supplements thereto) and other documents filed with the SEC through the web site maintained by the SEC at www.sec.gov or by directing a request to: Investcorp Europe Acquisition Corp I, Century Yard, Cricket Square, Elgin Avenue, P.O. Box 1111, George Town, Grand Cayman KY1-1102, Cayman Islands.

Participants in the Solicitation

The Company and its respective directors and officers may be deemed to be participants in the solicitation of proxies from shareholders in connection with the Extraordinary General Meeting. Additional information regarding the identity of these potential participants and their direct or indirect interests, by security holdings or otherwise, is set forth in the Definitive Proxy Statement. You may obtain free copies of these documents using the sources indicated above.