X0609 4 2026-05-31 0 0001819796 GCM Grosvenor Inc. GCMG 0001610089 Bentley Pamela L false C/O GCM GROSVENOR INC. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO IL 60611 0 1 0 0 Chief Financial Officer 0 Class A Common Stock 2026-05-31 4 M 0 16668 A 56409 D Class A Common Stock 2026-05-31 4 M 0 16161 A 72570 D Class A Common Stock 2026-05-31 4 M 0 12083 A 84653 D Class A Common Stock 2026-05-31 4 F 0 20256 10.63 D 64397 D Restricted Stock Units 2026-05-31 4 M 0 16668 0 D Class A Common Stock 16668 0 D Restricted Stock Units 2026-05-31 4 M 0 16161 0 D Class A Common Stock 16161 16163 D Restricted Stock Units 2026-05-31 4 M 0 12083 0 D Class A Common Stock 12083 24167 D Represents restricted stock units ("RSUs") that were granted under the Issuer's 2020 Incentive Award Plan on March 1, 2023. 16,666 RSUs vested on May 31, 2024, 16,666 RSUs vested on May 31, 2025 and 16,668 RSUs vested on May 31, 2026. 16,668 shares of Class A Common Stock of the Issuer were delivered to the Reporting Person in settlement of 16,668 vested RSUs on May 31, 2026. Each RSU represents the contingent right to receive one share of Class A Common Stock of the Issuer. Represents RSUs that were granted under the Issuer's Amended and Restated 2020 Incentive Award Plan on March 1, 2024. 16,161 RSUs vested on May 31, 2025, 16,161 RSUs vested on May 31, 2026 and 16,163 RSUs will vest on May 31, 2027, subject to the Reporting Person's continued service through the applicable vesting date. 16,161 shares of Class A Common Stock of the Issuer were delivered to the Reporting Person in settlement of 16,161 vested RSUs on May 31, 2026. Represents RSUs that were granted under the Issuer's Amended and Restated 2020 Incentive Award Plan on March 1, 2025. 12,083 RSUs vested on May 31, 2026, 12,083 RSUs will vest on May 31, 2027 and 12,084 RSUs will vest on May 31, 2028, subject to the Reporting Person's continued service through the applicable vesting date. 12,083 shares of Class A Common Stock of the Issuer were delivered to the Reporting Person in settlement of 12,083 vested RSUs on May 31, 2026. 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 May 31, 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 2026-06-02