X0609 4 2026-08-15 0 0001819796 GCM Grosvenor Inc. GCMG 0001680611 Pollock Frederick false C/O GCM GROSVENOR INC. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO IL 60611 0 1 0 0 Chief Investment Officer 0 Class A Common Stock 2026-08-15 4 M 0 60870 A 837142 D Class A Common Stock 2026-08-15 4 F 0 23953 13.86 D 813189 D Restricted Stock Units 2026-08-15 4 M 0 60870 0 D Class A Common Stock 60870 0 D Represents restricted stock units ("RSUs") that were granted under the Issuer's Amended and Restated 2020 Incentive Award Plan on March 1, 2026, and vested in full on August 15, 2026. Shares of Class A common stock of the Issuer were delivered to the Reporting Person in settlement of vested RSUs on August 15, 2026. Each RSU represents the contingent right to receive one share of Class A Common Stock of the Issuer. Represents shares of Class A common stock that have been withheld by the Issuer to satisfy tax withholding obligations in connection with the net settlement of RSUs that vested on August 15, 2026. The shares withheld represent a reduction of shares issued to the Reporting Person upon settlement of vested RSUs and do not constitute any open-market sale. /s/ Burke Montgomery, Attorney-in-Fact 2026-08-17