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): July 20, 2023

M3-BRIGADE ACQUISITION III CORP.

(Exact name of registrant as specified in its charter)

Delaware

001-40946

86-3185502

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

1700 Broadway, 19th Floor

New York, New York 10019

(Address of principal executive offices, including zip code)

(212) 202-2200

(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 filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☒	Written communication 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 share of Class A common stock and one-third of one redeemable public warrant	MBSC.U	New York Stock Exchange
Class A common stock, par value $0.0001 per share	MBSC	New York Stock Exchange
Public warrants, each whole public warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share	MBSC WS	New York Stock Exchange

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.

On July 20, 2023, M3-Brigade Acquisition III Corp. (the “Company”) issued a press release announcing the approval by the Company’s board of directors, at the request of M3-Brigade Sponsor III LP (the “Sponsor”), of an extension of the period of time the Company has to consummate its initial business combination until October 26, 2023. In connection with such extension, the Sponsor or its affiliates or designees will deposit an additional $1,696,500 into the Company’s trust account, in part from the Company’s working capital, for the benefit of the Company’s public stockholders.

A copy of the press release is included as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits.

EXHIBIT INDEX

Exhibit No.		Description

99.1		Press Release, dated July 20, 2023.

104		Cover Page Interactive Data file (embedded within the inline XBRL document).

SIGNATURE

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

	M3-BRIGADE ACQUISITION III CORP.

Date: July 20, 2023	By:	/s/ Mohsin Y. Meghji
		Name:	Mohsin Y. Meghji
		Title:	Executive Chairman of the Board of Directors

M3-Brigade Acquisition III Corp. filed SEC Form 8-K: Other Events, Financial Statements and Exhibits