X0508 4 2026-02-14 0 0001796022 StepStone Group Inc. STEP 0002005327 Keathley Anthony C/O STEPSTONE GROUP INC. 277 PARK AVENUE, 45TH FLOOR NEW YORK NY 10172 0 1 0 0 Chief Accounting Officer 0 Class A Common Stock 2026-02-14 4 F 0 296 56.76 D 1928 D Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the release of 981 vested restricted stock units on February 14, 2026. /s/ Jennifer Y. Ishiguro, Attorney-in-fact for Anthony W. Keathley 2026-02-17