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 16, 2025

M3-BRIGADE ACQUISITION V CORP.
(Exact name of registrant as specified in its charter)

Cayman Islands		001-42171		98-1781141
(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)		(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 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 Class A ordinary share and one-half of one redeemable warrant	MBAVU	The Nasdaq Stock Market LLC
Class A ordinary share, par value $0.0001 per share	MBAV	The Nasdaq Stock Market LLC
Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share	MBAVW	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 1.01 Entry into a Material Definitive Agreement.

As previously disclosed on June 18, 2025, M3-Brigade Acquisition V Corp. (the “Company”) issued a convertible promissory note (the “Note”) to M17 Sponsor, LLC (the “Sponsor”), the Company’s sponsor, pursuant to which the Company can borrow up to an aggregate principal amount of $2,500,000 from the Sponsor, after which the Company borrowed $500,000 under the note on June 18, 2025. Unless otherwise defined herein, capitalized terms used in this Current Report on Form 8-K shall have the same meaning set forth in the Note.

On July 16, 2025, the Company and the Sponsor entered into the First Amendment to the Note (the “Note Amendment”), solely to correct a scrivener’s error regarding the Sponsor’s option to convert up to $1,500,000 of the outstanding unpaid principal balance under the Note into Private Placement Warrants at a purchase price of $1.50 per Private Placement Warrant. Pursuant to the Note Amendment, the purchase price per Private Placement Warrant was corrected to reflect a purchase price of $1.00 per Private Placement Warrant upon conversion under the Note. All other terms of the Note remain unchanged.

The foregoing description of the Note Amendment is subject to and qualified in its entirety by reference to the full text of the Note Amendment, a copy of which is included as Exhibit 10.1 hereto, and the terms of which are incorporated herein by reference.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under and Off-Balance Sheet Arrangement of a Registrant.

The information set forth in Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 2.03.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.		Description
10.1		First Amendment to Promissory Note, by and between the Company and the Sponsor, dated as of July 16, 2025.
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.

Date: July 18, 2025

	M3-BRIGADE ACQUISITION V CORP.

	By:	/s/ Robert Rivas Collins
	Name:	Robert Rivas Collins
	Title:	Chief Executive Officer

M3-Brigade Acquisition V Corp. 8-K