Additional Proxy Soliciting Materials (Form DEFA14A)

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 the 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 under § 240.14a-12

SIM Acquisition Corp. I

(Name of Registrant as Specified In Its Charter)

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

Payment of Filing Fee (Check all boxes that apply):

☒	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-6(i)(1) and 0-11

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): April 22, 2026

SIM Acquisition Corp. I

(Exact name of registrant as specified in its charter)

Cayman Islands		001-42164		35-2838851
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

725 Fifth Avenue, 22nd Floor, New York, New York 10022

(Address of principal executive offices, including zip code)

Registrant's telephone number, including area code: (833) 746-2001

Not Applicable

(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:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant		SIMAU		The Nasdaq Stock Market LLC
Class A ordinary shares, par value $0.0001 per share		SIMA		The Nasdaq Stock Market LLC
Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share		SIMAW		The Nasdaq Stock Market LLC

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 8.01. Other Events.

Postponement of Shareholders Meeting

SIM Acquisition Corp. I (the "Company") has determined to postpone the extraordinary general meeting in lieu of an annual general meeting of the shareholders of the Company (the "Meeting"), initially scheduled to occur on Thursday, April 23, 2026 at 10:00 a.m., Eastern Time, to Friday, May 1, 2026, at 10:00 a.m., Eastern Time. As previously disclosed, the purpose of the Meeting is to, among other things, approve an amendment to the Company's amended and restated memorandum of association and articles of association, to extend the date by which the Company must consummate an initial business combination from July 11, 2026 to July 12, 2027 (or such earlier date as determined by the Company's board of directors (the "Extension Amendment Proposal")). The Meeting will be held at the offices of Ellenoff Grossman & Schole LLP, located at 1345 Avenue of the Americas, 11^th Floor, New York, New York 10105. The deadline by which shareholders must exercise their redemption rights in connection with the vote to approve the Extension Amendment Proposal at the Meeting has been extended to Wednesday, April 29, 2026, at 5:00 p.m., Eastern Time, which is two business days prior to the Meeting.

Participants in the Solicitation

The Company and its directors and executive officers and other persons may be deemed to be participants in the solicitation of proxies from the Company's shareholders in respect of the Meeting and related matters. Information regarding the Company's directors and executive officers is available in the definitive proxy statement on Schedule 14A (the "Proxy Statement"). Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests are contained in the Proxy Statement.

No Offer or Solicitation

This communication shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which the offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

Additional Information

The Company has filed the Proxy Statement with the U.S. Securities and Exchange Commission (the "SEC") in connection with the Meeting to consider and vote upon the Extension Amendment Proposal, the Auditor Ratification Proposal and other matters and, beginning on or about April 1, 2026, mailed the Proxy Statement and other relevant documents to its shareholders as of March 25, 2026, the record date for the Meeting. The Company's shareholders and other interested persons are advised to read the Proxy Statement and any other relevant documents that have been or will be filed with the SEC in connection with the Company's solicitation of proxies for the Meeting because these documents contain important information about the Company, the Extension Amendment Proposal, the Auditor Ratification Proposal and related matters. Shareholders may also obtain a free copy of the Proxy Statement, as well as other relevant documents that have been or will be filed with the SEC, without charge, at the SEC's website located at www.sec.gov or by directing a request to: SIM Acquisition Corp. I, 725 Fifth Avenue, 22nd Floor, New York, New York 10022, Telephone No.: (833) 746-2001.

Forward-Looking Statements

This Current Report on Form 8-K (this "Form 8-K") includes "forward-looking statements" within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical fact included in this Form 8-K are forward-looking statements. When used in this Form 8-K, words such as "anticipate," "believe," "continue," "could," "estimate," "expect," "intend," "may," "might," "plan," "possible," "potential," "predict," "project," "should," "would" and similar expressions, as they relate to us or our management team, identify forward-looking statements. Such forward-looking statements are based on the beliefs of the Company's management, as well as assumptions made by, and information currently available to, the Company's management. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors detailed in the Company's filings with the SEC. All subsequent written or oral forward-looking statements attributable to the Company or persons acting on its behalf are qualified in their entirety by this paragraph. Forward-looking statements are subject to numerous conditions, many of which are beyond the control of the Company, including those set forth in the "Risk Factors" section of the Company's Proxy Statement, Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and initial public offering prospectus. The Company undertakes no obligation to update these statements for revisions or changes after the date of this release, except as required by law.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.		Description of Exhibits
104		Cover Page Interactive Data File (embedded within the Inline XBRL documents).

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.

	SIM ACQUISITION CORP. I
Date: April 22, 2026	By:	/s/ David Kutcher
		Name:	David Kutcher
		Title:	Chief Financial Officer