Pamela McIntyre - 01 Jan 2026 Form 4 Insider Report for OneStream, Inc. (OS)

Role: Chief Accounting Officer
Signature: /s/ Holly Koczot, attorney-in-fact
Issuer symbol: OS
Transactions as of: 01 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Jan 2026, 16:20:35 UTC
Next filing: 09 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McIntyre Pamela	Chief Accounting Officer	C/O ONESTREAM, INC., 191 N. CHESTER STREET, BIRMINGHAM	/s/ Holly Koczot, attorney-in-fact	05 Jan 2026	0002100927

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OS	Class A Common Stock	Award	$0	+18,989	+41%	$0.000000	65,352	01 Jan 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents an equal number of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock on the date it vests. The RSUs will vest in full on January 1, 2027, subject to the Reporting Person continuing to be a Service Provider through the vesting date.
F2	The shares reported include unvested restricted stock units.