| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Shea Thomas Anthony | CEO and President, Director, 10%+ Owner | C/O ONESTREAM, INC., 191 N. CHESTER STREET, BIRMINGHAM | /s/ Holly Koczot, attorney-in-fact | 2025-06-12 | 0002027929 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OS | Class A Common Stock | Conversion of derivative security | +150 | +0.03% | 507K | Jun 10, 2025 | Direct | F1, F2 | ||
| transaction | OS | Class A Common Stock | Sale | -$280K | -9.91K | -1.96% | $28.23 | 497K | Jun 11, 2025 | Direct | F2, F3 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OS | Class D Common Stock | Conversion of derivative security | $0 | -150 | 0% | $0.00 | 3.89M | Jun 10, 2025 | Class A Common Stock | 150 | $0.00 | Direct | F1, F4, F5 |
| holding | OS | Class D Common Stock | 4.75M | Jun 10, 2025 | Class A Common Stock | 4.75M | $0.00 | See footnote | F4, F5, F6 | |||||
| holding | OS | Class D Common Stock | 7.53M | Jun 10, 2025 | Class A Common Stock | 7.53M | $0.00 | See footnote | F4, F7 |
| Id | Content |
|---|---|
| F1 | The Class A Common Stock was acquired upon the conversion, at the holder's election, of Class D Common Stock held by the holder on a 1:1 basis. |
| F2 | The shares reported include unvested restricted stock units. |
| F3 | Represents the number of shares required to be sold to cover the statutory tax withholding obligations in connection with the vesting of restricted stock units. This sale is mandated by the Issuer's election under its equity incentive plan to require the satisfaction of statutory tax withholding obligations in connection with the vesting of restricted stock units to be funded by a "sell to cover" transaction and does not represent a discretionary sale by the Reporting Person. |
| F4 | The Class D Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis. Each outstanding share of Class D Common Stock will automatically convert into one share of Class A Common Stock upon the earlier of (i) any transfer, whether or not for value, except for certain transfers exempted by the Issuer's amended and restated certificate of incorporation, (ii) death or incapacity (if the holder is a natural person), provided that, with respect to the Reporting Person and his permitted transferees, conversion would be deferred for nine months following any such event, and (iii) the first trading day following the seventh anniversary of the Issuer's initial public offering. |
| F5 | On February 25, 2025, 340,736 shares of the Issuer's Class D Common Stock registered in the name of The Thomas A. Shea 2020 Annuity Trust dated December 23, 2020 (the "2020 Shea Annuity Trust") were transferred to the Reporting Person. |
| F6 | Shares held of record by the 2020 Shea Annuity Trust. The Reporting Person's spouse serves as the trustee for the 2020 Shea Annuity Trust. By virtue of his relationship, the Reporting Person may be deemed to share voting and dispositive power with respect to the shares held by the 2020 Shea Annuity Trust. |
| F7 | Shares held of record by the Shea Family Trust dated December 25, 2019 (the "2019 Shea Family Trust"). The Reporting Person's spouse serves as the co-trustee for the 2019 Shea Family Trust. By virtue of his relationship, the Reporting Person may be deemed to share voting and dispositive power with respect to the shares held by the 2019 Shea Family Trust. |