William A. Koefoed - 31 Dec 2025 Form 4 Insider Report for OneStream, Inc. (OS)

Role: Former Chief Financial Officer
Signature: /s/ Holly Koczot, attorney-in-fact
Issuer symbol: OS
Transactions as of: 31 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 05 Jan 2026, 16:17:32 UTC
Previous filing: 16 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Koefoed William A	Former Chief Financial Officer	C/O ONESTREAM, INC., 191 N. CHESTER STREET, BIRMINGHAM	/s/ Holly Koczot, attorney-in-fact	05 Jan 2026	0001642337

William A. Koefoed is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Remarks:

Effective December 31, 2025, the Reporting Person is no longer the Issuer's Chief Financial Officer. As a result, the Reporting Person is no longer subject to Section 16 in connection with his transactions in the equity securities of the Issuer and therefore will no longer report any such transactions on Form 4 or Form 5. The Reporting Person will remain a Senior Advisor to the Issuer.