Thomas Anthony Shea - 10 Mar 2026 Form 4 Insider Report for OneStream, Inc. (OS)

Role
CEO, Director, 10%+ Owner
Signature
/s/ Holly Koczot, attorney-in-fact
Issuer symbol
OS
Transactions as of
10 Mar 2026
Net transactions value
$0
Form type
4
Filing time
12 Mar 2026, 16:33:43 UTC
Previous filing
12 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Shea Thomas Anthony CEO, Director, 10%+ Owner C/O ONESTREAM, INC., 191 N. CHESTER STREET, BIRMINGHAM /s/ Holly Koczot, attorney-in-fact 12 Mar 2026 0002027929

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OS Class A Common Stock Tax liability -9,258 -2% $23.70* 459,986 10 Mar 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 shares that have been withheld by the Issuer to satisfy the Reporting Person's tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.
F2 The shares reported include unvested restricted stock units.