X0508 4 2026-02-04 0 0001563190 Compass, Inc. COMP 0001847178 Reffkin Robert L. C/O COMPASS, INC. 110 FIFTH AVENUE, 4TH FLOOR NEW YORK NY 10011 1 1 0 0 Chairman and CEO 0 Class A Common Stock 2026-02-04 4 M 0 1154593 0 A 1154593 D Class A Common Stock 2026-02-04 4 F 0 638797 11.98 D 515796 D Class A Common Stock 7828116 I See Footnotes Restricted Stock Unit (RSU) 2026-02-04 4 M 0 814627 0 D Class A Common Stock 814627 1629254 D Restricted Stock Unit (RSU) 2026-02-04 4 M 0 339966 0 D Class A Common Stock 339966 1019899 D Each RSU represents a contingent right to receive one (1) share of the Issuer's Class A Common Stock upon settlement. Represents shares withheld by Issuer to satisfy tax withholding obligations on the vesting of RSUs. Represents (i) 4,148,000 shares of Class A Common Stock owned by the 2021 Reffkin Remainder Interest Trust, (ii) 3,190,870 shares of Class A Common Stock owned by the Reffkin Investment II Corp, (iii) 411,111 shares of Class A Common Stock owned by The Ruth Reffkin Family Trust and (iv) 78,135 shares of Class A Common Stock owned by the Reffkin 2022 Family Trust. The RSUs vest as to 25% of the total shares on each of January 1, 2025, January 1, 2026, January 1, 2027 and January 1, 2028, subject to the Reporting Person's provision of service to the Issuer on each vesting date. The RSUs vest as to 25% of the total shares on each of January 1, 2026, January 1, 2027, January 1, 2028 and January 1, 2029, subject to the Reporting Person's provision of service to the Issuer on each vesting date. /s/ Ethan Glass, as attorney-in-fact 2026-02-06