Michael Jay Sacks - 14 Nov 2025 Form 4 Insider Report for GCM Grosvenor Inc. (GCMG)

Reporting relationship: Chief Executive Officer, Director, 10%+ Owner
Issuer ticker: GCMG
Reported as of: 14 Nov 2025
Net transaction value: -$9.08
SEC form: 4
Accepted by SEC: 18 Nov 2025, 06:02:58 UTC
Prior SEC filing: 12 May 2025
Source filing: View source filing
Reporting owner signature: /s/ Burke Montgomery, Attorney-in-Fact

Key filing fact

Michael Jay Sacks filed Form 4 for GCM Grosvenor Inc. (GCMG) on 18 Nov 2025.

Key facts

This page summarizes Michael Jay Sacks's Form 4 filing for GCM Grosvenor Inc. (GCMG).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 18 Nov 2025, 06:02.

Change

Previous filing in this sequence was filed on 12 May 2025.
Current net transaction value: -$9.08.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (2)

CIK 0001509764 Primary reporting owner

Sacks Michael Jay

Relationship: Chief Executive Officer, Director, 10%+ Owner
Address: C/O GCM GROSVENOR INC., 900 NORTH MICHIGAN AVENUE, SUITE 1100, CHICAGO
Signature: /s/ Burke Montgomery, Attorney-in-Fact
Signature date: 17 Nov 2025

CIK 0001743987

Grosvenor Holdings, L.L.C.

Relationship: 10%+ Owner
Address: C/O GCM GROSVENOR INC., 900 NORTH MICHIGAN AVENUE, SUITE 1100, CHICAGO
Signature: /s/ Burke Montgomery, Attorney-in-Fact
Signature date: 17 Nov 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GCMG transaction

Class A Common Stock

Exercise of in-the-money or at-the-money derivative security

Transaction value: $10,350,000
Shares: +900,000
Change %
Price: $11.50
Shares after: 900,000
Date: 14 Nov 2025
Ownership: See footnotes
Footnotes: F1

GCMG transaction

Class A Common Stock

Other

Transaction value: $10,350,009
Shares: -893,012
Change %: -99%
Price: $11.59
Shares after: 6,988
Date: 14 Nov 2025
Ownership: See footnotes
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GCMG transaction Derivative

Warrants

Exercise of in-the-money or at-the-money derivative security

Transaction value: $0
Shares: -900,000
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 14 Nov 2025
Ownership: See footnotes
Underlying class: Class A Common Stock
Underlying amount: 900,000
Exercise price: $11.50
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents securities held directly by Grosvenor Holdings, L.L.C. The Reporting Person is the ultimate managing member of each of Grosvenor Holdings, L.L.C., Grosvenor Holdings II, L.L.C. , GCM Grosvenor Management, L.L.C. and GCM V, L.L.C.

Footnote F2

The Reporting Person exercised 900,000 warrants to purchase 900,000 shares of the Issuer's Class A Common Stock at an exercise price of $11.50 per share. The Reporting Person paid the exercise price on a cashless basis, resulting in withholding of 893,012 of the warrant shares to pay the exercise price and issuing to the Reporting Person the remaining 6,988 shares. The warrant shares withheld represent a reduction of shares issued to the Reporting Person and do not constitute any open-market sale.