Pamela McIntyre - 08 Jan 2026 Form 4 Insider Report for OneStream, Inc. (OS)

Signature
/s/ Holly Koczot, attorney-in-fact
Issuer symbol
OS
Transactions as of
08 Jan 2026
Net transactions value
-$153,388
Form type
4
Filing time
09 Jan 2026, 18:18:27 UTC
Previous filing
05 Jan 2026
Next filing
12 Mar 2026

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 09 Jan 2026 0002100927

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OS Class A Common Stock Sale $153,388 -6,505 -10% $23.58 58,847 08 Jan 2026 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 8, 2025.
F2 The shares reported include unvested restricted stock units.