GCM Grosvenor CFO sells 50K Class A shares

Rhea-AI Filing Summary

GCM Grosvenor Inc. (GCMG) reported that its Chief Financial Officer, Pamela L. Bentley, sold a total of 50,000 shares of Class A common stock in open-market transactions on September 15 and 16, 2026, under a Rule 10b5-1 trading plan using weighted-average pricing.

Insider Trade Summary 10b5-1

Net Seller: 50,000 shares

Net Sell 2 txns

Insider Bentley Pamela L

Role Chief Financial Officer

Sold 50,000 shs ($629K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F2	10,000	$12.6787	$127K
Sale	Class A Common Stock F1	40,000	$12.5627	$503K

Holdings After Transaction: Class A Common Stock — 14,397 shares (Direct)

Footnotes (2)

1. F1. These shares were sold pursuant to a Rule 10b5-1 trading plan in multiple transactions at prices ranging from $12.3800 to $12.7300, inclusive. The price reported in Column 4 is a weighted average price.
2. F2. These shares were sold pursuant to a Rule 10b5-1 trading plan in multiple transactions at prices ranging from $12.4550 to $12.7800, inclusive. The price reported in Column 4 is a weighted average price.

Key Figures

Shares sold September 15, 2026: 40,000 shares of Class A common stock Weighted average sale price September 15, 2026: $12.5627 per share Shares sold September 16, 2026: 10,000 shares of Class A common stock +2 more

5 metrics

Shares sold September 15, 2026 40,000 shares of Class A common stock Open-market sale by the Chief Financial Officer under a Rule 10b5-1 trading plan

Weighted average sale price September 15, 2026 $12.5627 per share Average price across multiple transactions within a range of $12.3800 to $12.7300

Shares sold September 16, 2026 10,000 shares of Class A common stock Open-market sale by the Chief Financial Officer under a Rule 10b5-1 trading plan

Weighted average sale price September 16, 2026 $12.6787 per share Average price across multiple transactions within a range of $12.4550 to $12.7800

Total shares sold 50,000 shares Combined total of the CFO’s reported sales on September 15 and 16, 2026

Key Terms

Rule 10b5-1 trading plan, weighted average price, Class A common stock

3 terms

Rule 10b5-1 trading plan regulatory

"These shares were sold pursuant to a Rule 10b5-1 trading plan in multiple transactions"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Class A common stock financial

"These shares were sold pursuant to a Rule 10b5-1 trading plan"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did GCMG disclose in this Form 4?

GCM Grosvenor disclosed that its Chief Financial Officer, Pamela L. Bentley, sold a total of 50,000 shares of Class A common stock in two open-market transactions on September 15 and 16, 2026 pursuant to a Rule 10b5-1 trading plan.

How many GCMG shares did the CFO sell on each date and at what prices?

On September 15, 2026, the CFO sold 40,000 shares at a weighted average price of $12.5627 per share. On September 16, 2026, she sold 10,000 shares at a weighted average price of $12.6787 per share.

Were the GCMG insider sales made under a Rule 10b5-1 trading plan?

Yes. The filing states that both sets of shares were sold pursuant to a Rule 10b5-1 trading plan and that the prices reported are weighted average prices from multiple transactions within specified price ranges.

What price ranges applied to the CFO’s GCMG share sales?

For the 40,000-share sale on September 15, 2026, trades occurred at prices ranging from $12.3800 to $12.7300. For the 10,000-share sale on September 16, 2026, trades occurred at prices ranging from $12.4550 to $12.7800.

Can investors obtain detailed trade-level pricing for the GCMG insider sales?

Yes. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price within the reported ranges to the issuer, any security holder, or SEC staff upon request.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/16/2026 - 08:04 PM Accepted by SEC EDGAR 09/16/2026 - 08:04 PM Learn about SEC filing dates

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
Estimated average burden
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).

X

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^*

Bentley Pamela L

(Last) (First) (Middle)

C/O GCM GROSVENOR INC.

900 NORTH MICHIGAN AVENUE, SUITE 1100

(Street)

CHICAGO ILLINOIS 60611

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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

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

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

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	09/15/2026		S		40,000	D	$12.5627(1)	24,397	D
Class A Common Stock	09/16/2026		S		10,000	D	$12.6787(2)	14,397	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. These shares were sold pursuant to a Rule 10b5-1 trading plan in multiple transactions at prices ranging from $12.3800 to $12.7300, inclusive. The price reported in Column 4 is a weighted average price.

2. These shares were sold pursuant to a Rule 10b5-1 trading plan in multiple transactions at prices ranging from $12.4550 to $12.7800, inclusive. The price reported in Column 4 is a weighted average price.

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 ranges set forth in footnotes (1) and (2) to this Form 4.

	/s/ Burke Montgomery, Attorney-in-Fact	09/16/2026
	** 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.
* Form 4: SEC 1474 (03-26)