StepStone Group Inc. — Director's Dealing 2025

Oct 2, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: StepStone Group Inc. (STEP)
CIK: 0001796022
Period of Report: 2025-09-30

Reporting Person: Keck Thomas (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-30	Class B Common Stock	G	30623	—	Disposed	2520501	Indirect
2025-09-30	Class B Common Stock	G	30623	—	Acquired	30623	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-09-30	Class B Units	$	G	30623	Disposed		Class A Common Stock (30623)	Indirect
2025-09-30	Class B Units	$	G	30623	Acquired		Class A Common Stock (30623)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	13966	Direct
Class A Common Stock	100750	Indirect
Class B Common Stock	1645374	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Units	$		Class A Common Stock (1645374)	1645374	Indirect

Footnotes

F1: On September 30, 2025, the Reporting Person transferred 30,623 Class B Units of Stepstone Group LP, together with an equal number of shares of Class B Common Stock (collectively, the "Transferred Interest") to an entity (the "Transferee Entity") owned entirely by a trust established for the benefit of Reporting Person's immediate family (such transaction, the "Transfer"). Pursuant to the terms of the Transfer, the Reporting Person is required to retain the exclusive right to exercise or direct the exercise of voting control in respect of the Transferred Interests. Notwithstanding the foregoing, the Reporting Person disclaims all beneficial ownership of the Transferred Interests.

F2: Class B Units of StepStone Group LP are exchangeable, on a one-for-one basis, for shares of Class A Common Stock of the Issuer. Upon exchange of a Class B Unit, the corresponding share of Class B Common Stock of the Issuer will be automatically redeemed and cancelled.