Sec Form 3 Filing - Chu Chinh @ M3-Brigade Acquisition V Corp. - 2025-05-27

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Chu Chinh 2. Issuer Name and Ticker or Trading Symbol M3-Brigade Acquisition V Corp. [ MBAV] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) President (Last) (First) (Middle) 200 PARK AVENUE, 58TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 05/27/2025 (Street) NEW YORK, NY10166 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class B ordinary shares ( 1 ) ( 1 ) ( 1 ) Class A ordinary shares 7,187,500 I ( 2 ) By MI7 Sponsor, LLC

Reporting Owners Reporting Owner Name / Address Relationships D irector 10% Owner Officer Other Chu Chinh 200 PARK AVENUE 58TH FLOOR NEW YORK, NY10166 X President MI7 Sponsor, LLC 200 PARK AVE. 58TH FLOOR NEW YORK, NY10166 X CC MI7 SPV, LLC 200 PARK AVE. 58TH FLOOR NEW YORK, NY10166 X CC Capital Ventures, LLC 200 PARK AVE. 58TH FLOOR NEW YORK, NY10166 X CC Capital SP, LP 200 PARK AVE. 58TH FLOOR NEW YORK, NY10166 X CC Capital GP, LLC 200 PARK AVE. 58TH FLOOR NEW YORK, NY10166 X Signatures Chinh Chu /s/ Chinh Chu 06/06/2025 Signature of Reporting Person Date MI7 Sponsor, LLC /s/ Chinh Chu, President and Senior Managing Director 06/06/2025 Signature of Reporting Person Date CC MI7 SPV, LLC /s/ Chinh Chu, President and Senior Managing Director 06/06/2025 Signature of Reporting Person Date CC Capital Ventures, LLC /s/ Chinh Chu President and Senior Managing Director 06/06/2025 Signature of Reporting Person Date CC Capital SP, LP /s/ Chinh Chu, Sole Member, CC Capital GP, LLC, its General Partner 06/06/2025 Signature of Reporting Person Date CC Capital GP, LLC /s/ Chinh Chu, Sole Member 06/06/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Class B ordinary shares, par value $0.0001 per share, will automatically convert into Class A ordinary shares, par value $0.0001 per share, of M3-Brigade Acquisition V Corp. (the "Issuer") at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date. ( 2 )MI7 Sponsor, LLC ("Sponsor") directly holds the shares reported herein. CC MI7 SPV, LLC ("CC MI7 SPV") is the sole member of Sponsor. CC Capital Ventures, LLC ("CC Capital Ventures") is the sole member of CC MI7 SPV, and CC Capital SP, LP ("CC Capital SP") is the sole member of CC Capital Ventures. CC Capital GP, LLC (CC Capital GP") is the general partner of CC Capital SP, and Chinh Chu is the sole member of CC Capital GP. Each of CC MI7 SPV, CC Capital Ventures, CC Capital SP, CC Capital GP and Chinh Chu disclaims beneficial ownership of the securities of the Issuer held directly by Sponsor except to the extent of its or his pecuniary interest therein, and this report shall not be deemed an admission that any of CC MI7 SPV, CC Capital Ventures, CC Capital SP, CC Capital GP or Chinh Chu is the beneficial owner of such securities for purposes of Section 16 or any other purpose.

Remarks: See Exhibit 99.1 - Joint Filer Information

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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