ONTF (ON24, Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by ONTF 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 | ANTHONY ZINGALE | Director | D | — | — |
| 2026-04-02 | TERESA ANANIA | Director | D | — | — |
| 2026-04-02 | BARRY ZWARENSTEIN | Director | D | — | — |
| 2026-04-02 | Ronald Paul Mitchell | Director | D | — | — |
| 2026-04-02 | Jayesh Sahasi | EV President, Product and CTO | MIXED | — | — |
| 2026-04-02 | Cynthia Paul | Director | MIXED | — | — |
| 2026-04-02 | Steven Vattuone | Chief Financial Officer | MIXED | — | — |
| 2026-04-02 | Anil Arora | Director | D | — | — |
| 2026-04-02 | Dominique Trempont | Director | D | — | — |
| 2026-04-02 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2026-04-02 | James Blackie | Chief Revenue Officer | MIXED | — | — |
| 2026-03-24 | Sharat Sharan | President and Chief Executive | Sell | — | — |
| 2026-03-24 | Jayesh Sahasi | EV President, Product and CTO | Sell | — | — |
| 2026-03-24 | James Blackie | Chief Revenue Officer | Sell | — | — |
| 2026-03-24 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2026-03-05 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2026-03-02 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2026-03-02 | Steven Vattuone | Chief Financial Officer | MIXED | — | — |
| 2026-03-02 | Jayesh Sahasi | EV President, Product and CTO | MIXED | — | — |
| 2026-03-02 | James Blackie | Chief Revenue Officer | MIXED | — | — |
| 2026-02-12 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2026-02-10 | Jayesh Sahasi | EV President, Product and CTO | MIXED | — | — |
| 2026-02-10 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2026-02-10 | James Blackie | Chief Revenue Officer | MIXED | — | — |
| 2026-02-10 | Steven Vattuone | Chief Financial Officer | MIXED | — | — |
| 2026-01-05 | Sharat Sharan | President and Chief Executive | Sell | — | — |
| 2026-01-02 | Jayesh Sahasi | EV President, Product and CTO | Sell | — | — |
| 2026-01-02 | James Blackie | Chief Revenue Officer | MIXED | — | — |
| 2026-01-02 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2025-12-22 | Sharat Sharan | President and Chief Executive | M | — | — |
| 2025-12-18 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2025-12-10 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2025-12-03 | James Blackie | Chief Revenue Officer | Sell | — | — |
| 2025-12-03 | Jayesh Sahasi | EV President, Product and CTO | Sell | — | — |
| 2025-12-03 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2025-11-25 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2025-11-24 | James Blackie | Chief Revenue Officer | Sell | — | — |
| 2025-11-24 | Jayesh Sahasi | EV President, Product and CTO | Sell | — | — |
| 2025-11-24 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2025-10-20 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2025-10-02 | Sharat Sharan | President and Chief Executive | Sell | — | — |
| 2025-09-17 | Sharat Sharan | President and Chief Executive | MIXED | — | — |
| 2025-09-09 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2025-09-09 | James Blackie | Chief Revenue Officer | Sell | — | — |
| 2025-09-09 | Jayesh Sahasi | EV President, Product and CTO | Sell | — | — |
| 2025-09-04 | James Blackie | Chief Revenue Officer | Sell | — | — |
| 2025-09-04 | Jayesh Sahasi | EV President, Product and CTO | Sell | — | — |
| 2025-09-04 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| 2025-08-22 | James Blackie | Chief Revenue Officer | Sell | — | — |
| 2025-08-22 | Steven Vattuone | Chief Financial Officer | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 8,369,807 | — |
| — | 10%+ Owner | 7,368,405 | — |
| — | 10%+ Owner | 5,868,405 | — |
| — | 10%+ Owner | 5,759,298 | — |
| — | 10%+ Owner | 4,509,298 | — |
| — | 10%+ Owner | 3,726,781 | — |
| — | 10%+ Owner | 3,637,894 | — |
| — | 10%+ Owner | 3,515,287 | — |
| — | 10%+ Owner | 3,394,025 | — |
| — | 10%+ Owner | 3,351,770 | — |
| — | Chief Financial Officer | 511,936 | — |
| — | Director | 264,586 | — |
| — | President and Chief Executive | 92,500 | — |
| — | 10%+ Owner | 91,320 | — |
| — | Director | 79,032 | — |
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 ONTF quote page; the site-wide leaderboard is on the insider transactions hub.