ARG Private Equity, LLC - 06 Jan 2026 SCHEDULE 13D/A Report for StepStone Group Inc. Class A common stock, par value $0.001 per share (STEP)

Filing Manager: ARG Private Equity, LLC
Reporting Manager: Waldo Robert
Security: StepStone Group Inc. Class A common stock, par value $0.001 per share
Symbol: STEP
Shares outstanding: 85,760,651 shares
Disclosed Ownership: 3,687,708 shares
Ownership: 4.3%
Form type: SCHEDULE 13D/A
Filing time: 08 Jan 2026, 10:07:29 UTC
Date of event: 06 Jan 2026
SEC: View on sec.gov

Reporting Managers (5)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
ARG Private Equity, LLC	4.3%	3,662,708	3,662,708	0	/s/ Frederic Dorwart	Frederic Dorwart, Manager	0001585937
ARGO Holdings, LLC	4.3%	3,662,708	3,662,708	0	/s/ Frederic Dorwart	Frederic Dorwart, Manager of ARG Private Equity, LLC, its Manager	0001394221
Sanford Energy, Inc.	4.2%	3,589,480	3,589,480		/s/ Frederic Dorwart	Frederic Dorwart, President	0001821971
KAISER GEORGE B	4.3%	3,662,708		3,662,708	/s/ Frederic Dorwart	Frederic Dorwart, Attorney-in-fact	0001163432
Waldo Robert	4.3%	3,687,708	25,000	3,662,708	/s/ Robert A. Waldo	Robert A. Waldo, Self	0001728668