Sec Form 3 Filing - Sacks Michael Jay @ GCM Grosvenor Inc. - 2020-11-17

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 Sacks Michael Jay 2. Issuer Name and Ticker or Trading Symbol GCM Grosvenor Inc. [ GCMG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) C/O GCM GROSVENOR INC., 900 NORTH MICHIGAN AVENUE, SUITE 1100 3. Date of Earliest Transaction (MM/DD/YY) 11/17/2020 (Street) CHICAGO, IL60611 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 Class C Common Stock 144,235,246 ( 1 ) I See footnotes ( 2 ) ( 6 )

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 Common Units ( 3 ) ( 3 ) ( 3 ) Class A Common Stock 144,235,246 I See footnotes ( 4 ) ( 6 ) Warrants $ 11.5 12/17/2020 11/17/2025 Class A Common Stock 900,000 I See footnotes ( 5 ) ( 6 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Sacks Michael Jay C/O GCM GROSVENOR INC. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO, IL60611 X X Chief Executive Officer GCM V, LLC C/O GCM GROSVENOR INC. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO,, IL60611 X Grosvenor Holdings, L.L.C. C/O GCM GROSVENOR INC. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO,, IL60611 X Signatures /s/ Rachel Haupt, Attorney-in-Fact for Michael J. Sacks 11/17/2020 Signature of Reporting Person Date /s/ Rachel Haupt, Attorney-in-Fact for GCM V, LLC 11/17/2020 Signature of Reporting Person Date /s/ Rachel Haupt, Attorney-in-Fact for Grosvenor Holdings, L.L.C. 11/17/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Issuer's Class C Common Stock will automatically be cancelled for no consideration upon any sale or other transfer of a share of the Issuer's Class A Common Stock issued as a result of any redemption or direct exchange of the Common Units of Grosvenor Capital Management Holdings, LLLP ("GCMH"). ( 2 )Represents securities held directly by GCM V, LLC ("GCM V"). ( 3 )The Common Units of GCMH may be redeemed by the Reporting Persons at any time for shares of the Issuer's Class A Common Stock on a one-to-one basis. The Common Units do not expire. ( 4 )Represents securities held directly by Grosvenor Holdings, L.L.C. ("Grosvenor Holdings"), Grosvenor Holdings II, L.L.C. ("Grosvenor Holdings II"), and GCM Grosvenor Management, LLC ("GCM Grosvenor Management"). ( 5 )Represents securities held direclty by Grosvenor Holdings. ( 6 )The Reporting Person is the ultimate managing member of each of GCM V, Grosvenor Holdings, Grosvenor Holdings II and GCM Grosvenor Management.

Remarks: Exhibit 24.1 - Power of Attorney. Exhibit 24.2 - Power of Attorney. Exhibit 24.3 - Power of Attorney.

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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