OS (OneStream, Inc. Class A Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by OS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-02 | KARA WILSON | Director | D | — | — |
| 2026-04-02 | Michael Burkland | Director | D | — | — |
| 2026-04-02 | JONATHAN D MARINER | Director | D | — | — |
| 2026-04-02 | Pamela McIntyre | Chief Accounting Officer | D | — | — |
| 2026-04-02 | Ken Hohenstein | Chief Revenue Officer | D | — | — |
| 2026-04-02 | John Kinzer | See Remarks | D | — | — |
| 2026-04-02 | Scott Leshinski | President | D | — | — |
| 2026-04-02 | Baskar Sridharan | Director | D | — | — |
| 2026-04-02 | Thomas Anthony Shea | CEO | D | — | — |
| 2026-03-26 | Thomas Anthony Shea | CEO | G | — | — |
| 2026-03-20 | Pamela McIntyre | Chief Accounting Officer | A | — | — |
| 2026-03-20 | Scott Leshinski | President | A | — | — |
| 2026-03-20 | Ken Hohenstein | Chief Revenue Officer | A | — | — |
| 2026-03-18 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2026-03-12 | Thomas Anthony Shea | CEO | F | — | — |
| 2026-03-12 | Scott Leshinski | President | MIXED | — | — |
| 2026-03-12 | Ken Hohenstein | Chief Revenue Officer | F | — | — |
| 2026-03-12 | Pamela McIntyre | Chief Accounting Officer | MIXED | — | — |
| 2026-02-19 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2026-01-20 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2026-01-09 | Pamela McIntyre | Chief Accounting Officer | Sell | — | — |
| 2026-01-08 | JONATHAN D MARINER | Director | Sell | — | — |
| 2026-01-05 | Pamela McIntyre | Chief Accounting Officer | A | — | — |
| 2026-01-05 | Scott Leshinski | President | A | — | — |
| 2025-12-23 | John Kinzer | Director | C | — | — |
| 2025-12-18 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2025-12-16 | William A Koefoed | Chief Financial Officer | Sell | — | — |
| 2025-12-12 | William A Koefoed | Chief Financial Officer | F | — | — |
| 2025-12-12 | Thomas Anthony Shea | CEO and President | F | — | — |
| 2025-12-12 | Ken Hohenstein | Chief Revenue Officer | F | — | — |
| 2025-12-04 | JONATHAN D MARINER | Director | Sell | — | — |
| 2025-12-04 | John Kinzer | Director | A | — | — |
| 2025-11-19 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2025-10-17 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2025-10-07 | Baskar Sridharan | Director | A | — | — |
| 2025-09-22 | John Kinzer | Director | MIXED | — | — |
| 2025-09-18 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2025-09-16 | William A Koefoed | Chief Financial Officer | Sell | — | — |
| 2025-09-12 | Thomas Anthony Shea | CEO and President | F | — | — |
| 2025-09-12 | William A Koefoed | Chief Financial Officer | F | — | — |
| 2025-09-12 | Ken Hohenstein | Chief Revenue Officer | F | — | — |
| 2025-09-04 | JONATHAN D MARINER | Director | Sell | — | — |
| 2025-08-20 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2025-08-06 | JONATHAN D MARINER | Director | Sell | — | — |
| 2025-07-28 | William A Koefoed | Chief Financial Officer | MIXED | — | — |
| 2025-07-21 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| 2025-07-09 | JONATHAN D MARINER | Director | Sell | — | — |
| 2025-06-27 | William A Koefoed | Chief Financial Officer | MIXED | — | — |
| 2025-06-24 | John Kinzer | Director | MIXED | — | — |
| 2025-06-23 | Ken Hohenstein | Chief Revenue Officer | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | President | 388,010 | — |
| — | 10%+ Owner | 373,599 | — |
| — | Chief Financial Officer | 206,127 | — |
| — | 10%+ Owner | 104,100 | — |
| — | 10%+ Owner | 55,990 | — |
| — | Director | 9,541 | — |
| — | 10%+ Owner | 1,704 | — |
| — | Director | 787 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the OS quote page; the site-wide leaderboard is on the insider transactions hub.