Sec Form 4 Filing - Hurse Sandra @ GCM Grosvenor Inc. - 2023-03-31

FORM 4 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 Hurse Sandra 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 HR Officer (Last) (First) (Middle) C/O GCM GROSVENOR INC., 900 NORTH MICHIGAN AVENUE, SUITE 1100 3. Date of Earliest Transaction (MM/DD/YY) 03/31/2023 (Street) CHICAGO, IL60611 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 Class A Common Stock 03/31/2023 M( 1 ) 69,500 A 171,267.34 D Class A Common Stock 03/31/2023 D( 1 ) 69,500 D $ 7.81 101,767.34 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 (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 Restricted Stock Units ( 2 ) 03/31/2023 M( 1 ) 69,500 ( 1 ) ( 1 ) Class A Common Stock 69,500 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Hurse Sandra C/O GCM GROSVENOR INC. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO, IL60611 Chief HR Officer Signatures /s/ Burke Montgomery, Attorney-in-Fact 04/04/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents Restricted Stock Units ("RSUs") that were granted under the Issuer's 2020 Incentive Award Plan on December 15, 2022, and vested in full on March 31, 2023. 28,206 shares of Class A Common Stock were withheld by the Issuer to satisfy tax withholding obligations in connection with the net settlement of vested RSUs, and 41,294 RSUs were settled in cash at the option of the Issuer in an amount equal to the fair market value of the shares of Class A Common Stock underlying the RSUs on March 31, 2023. The shares withheld for tax withholding obligations and the cash settlement of RSUs do not constitute any open-market sale. ( 2 )Each RSU represents the contingent right to receive one share of Class A Common Stock of the Issuer.

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).

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