[Form 4] GCM Grosvenor Inc. Insider Trading Activity

Rhea-AI Filing Summary

Kathleen Patricia Sullivan, Principal Accounting Officer at GCM Grosvenor Inc., sold 6,000 shares of Class A common stock on 08/12/2025 at a weighted average price of $13.0206 per share. The reported sale occurred in multiple transactions at prices ranging from $13.0100 to $13.0300. After these disposals the reporting person beneficially owns 60,195 shares of Class A common stock.

The Form 4 discloses the weighted average sale price and includes a footnote offering to provide the number of shares sold at each price on request, showing full disclosure of the transaction details rather than summary pricing alone.

Positive

• Full disclosure of pricing range and weighted average for the multiple transactions, improving transparency
• Reporting person retains 60,195 Class A shares after the sale, showing continued ownership
• Identified officer title (Principal Accounting Officer) clarifies the reporting persons role

Negative

• Sale of 6,000 Class A shares reduces insider holdings and may be viewed unfavorably by some investors
• Transaction occurred in multiple trades, which can complicate immediate interpretation without per-trade breakdown

Insights

Securities Analyst

Insider sale was disclosed with precise pricing; transaction size appears routine relative to total holdings.

The sale of 6,000 Class A shares at a weighted average of $13.0206 reduces the reporting persons stake to 60,195 shares. The filing specifies the price range of the multiple trades and offers to provide per-trade quantities, which improves transparency for investors assessing insider activity. Given the absolute size and remaining ownership, this reads as a non-extraordinary liquidity event rather than a material change in control or corporate direction.

Corporate Governance Expert

Disclosure meets Form 4 requirements; no governance red flags from the transaction details provided.

The report identifies the reporting person, role as Principal Accounting Officer, the transaction date, number of shares sold, and the weighted average price with an explicit range. The willingness to provide per-price breakdowns further satisfies transparency norms. There is no indication in the filing of related-party transactions, 10b5-1 plan declaration, or other items that would suggest material governance concerns based on this single filing.

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SULLIVAN KATHLEEN PATRICIA

(Last) (First) (Middle)

C/O GCM GROSVENOR INC.

900 NORTH MICHIGAN AVENUE, SUITE 1100

(Street)

CHICAGO IL 60611

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GCM Grosvenor Inc. [ GCMG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Principal Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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
Class A Common Stock	08/12/2025		S		6,000	D	$13.0206(1)	60,195	D

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.0100 to $13.0300, inclusive.

Remarks:

The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4.

	/s/ Burke Montgomery, Attorney-in-Fact	08/13/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the GCM Grosvenor (GCMG) Form 4 report?

The Form 4 reports that Kathleen Patricia Sullivan sold 6,000 Class A shares on 08/12/2025 at a weighted average price of $13.0206 per share and now beneficially owns 60,195 shares.

What price did the insider receive for the shares in the GCMG filing?

The weighted average price was $13.0206, with individual trades ranging from $13.0100 to $13.0300 as disclosed in the footnote.

How many shares does Kathleen P. Sullivan own after the reported sale?

60,195 shares of Class A common stock are reported as beneficially owned following the transaction.

What role does the reporting person hold at GCM Grosvenor in the Form 4?

Principal Accounting Officer is listed as the reporting persons title on the Form 4.

Does the Form 4 provide details of each individual trade?

The filing states the shares were sold in multiple transactions and offers to provide the number of shares sold at each separate price on request rather than listing per-trade quantities in the form.