SST (System1, Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by SST 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 |
|---|---|---|---|---|---|
| 2026-07-17 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2026-07-17 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2026-07-17 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2026-07-17 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2026-06-02 | Tridivesh Kidambi | Chief Financial Officer | A | — | — |
| 2026-04-17 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2026-04-17 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2026-04-17 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2026-04-17 | Tridivesh Kidambi | Chief Financial Officer | MIXED | — | — |
| 2026-01-29 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2026-01-29 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2026-01-29 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2026-01-29 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2026-01-16 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2026-01-16 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2026-01-16 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2026-01-16 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2025-10-30 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2025-10-30 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2025-10-30 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2025-10-30 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2025-10-17 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2025-10-17 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2025-10-17 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2025-10-17 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2025-08-26 | CEE Holdings Trust | 10%+ Owner | Buy | — | — |
| 2025-08-21 | CEE Holdings Trust | 10%+ Owner | Buy | — | — |
| 2025-08-05 | FRANK R MARTIRE | Director | A | — | — |
| 2025-08-05 | Ryan R. Caswell | Director | A | — | — |
| 2025-08-04 | John Civantos | Director | A | — | — |
| 2025-08-04 | Moujan Kazerani | Director | A | — | — |
| 2025-08-04 | Tanmay Kumar | Director | A | — | — |
| 2025-08-04 | Caroline Horn | Director | A | — | — |
| 2025-08-04 | Taryn Jogi Naidu | Director | A | — | — |
| 2025-07-31 | Charles Ursini | President & COO | A | — | — |
| 2025-07-30 | Brian Coppola | Chief Ad Operations Officer | MIXED | — | — |
| 2025-07-30 | Elizabeth Sestanovich | Chief People Officer | MIXED | — | — |
| 2025-07-30 | Tridivesh Kidambi | Chief Financial Officer | MIXED | — | — |
| 2025-07-30 | Daniel J Weinrot | General Counsel & Secretary | MIXED | — | — |
| 2025-07-17 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| 2025-07-17 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2025-07-17 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2025-07-17 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2025-06-17 | John Civantos | Director | Buy | — | — |
| 2025-06-13 | John Civantos | Director | Buy | — | — |
| 2025-06-11 | Tridivesh Kidambi | Chief Financial Officer | Sell | — | — |
| 2025-04-30 | Elizabeth Sestanovich | Chief People Officer | F | — | — |
| 2025-04-30 | Tridivesh Kidambi | Chief Financial Officer | F | — | — |
| 2025-04-30 | Brian Coppola | Chief Ad Operations Officer | F | — | — |
| 2025-04-30 | Daniel J Weinrot | General Counsel & Secretary | F | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 919,555 | — |
| — | President & COO | 367,500 | — |
| — | Chief Financial Officer | 175,793 | — |
| — | Director | 70,613 | — |
| — | General Counsel & Secretary | 59,897 | — |
| — | Chief Ad Operations Officer | 59,774 | — |
| — | Chief People Officer | 51,890 | — |
| — | Director | 41,575 | — |
| — | Director | 40,292 | — |
| — | Director | 38,577 | — |
| — | Director | 38,562 | — |
| — | Director | 37,418 | — |
| — | Director | 35,196 | — |
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 SST quote page; the site-wide leaderboard is on the insider transactions hub.