| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kinzer John | Director, Strategic Advisor | C/O ONESTREAM, INC., 191 N. CHESTER STREET, BIRMINGHAM | /s/ Holly Koczot, attorney-in-fact | 2025-12-04 | 0001621078 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OS | Class A Common Stock | Award | $0 | +94.6K | +1326.89% | $0.00 | 102K | Dec 2, 2025 | Direct | F1, F2 |
| 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 December 1, 2026, subject to the Reporting Person continuing to be a Service Provider through the vesting date. The RSUs were granted in connection with the Reporting Person's appointment as a strategic advisor to the Issuer effective as of December 2, 2025 and as interim chief financial officer effective as of January 1, 2026. |
| F2 | The shares reported include unvested restricted stock units. |