System1, Inc.
SSTCIK 0001805833 · Every Form 4 filed by insiders at this issuer. See financials →
Annual report (10-K)
Latest 10-K/A filed Apr 30, 2026. Sentiment + YoY language diff vs prior year. Read sections →
Signal:NeutralFull-doc fallback
Full filing:tone -0.0006
Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.
Recent 8-K announcements
Per-item disclosure feed. Item 2.02 is the earnings release.
Jun 1, 20261.01 · Entry into a Material Definitive Agreeme2.03 · Creation3.02 · Unregistered Sales7.01 · Regulation FD Disclosure9.01 · Financial Statements and ExhibitsMay 12, 2026no items parsedMay 12, 2026no items parsedMar 11, 20267.01 · Regulation FD Disclosure9.01 · Financial Statements and ExhibitsMar 11, 2026no items parsed
Top insiders
Most active reporters at System1, Inc.
| Name | Roles | Filings |
|---|---|---|
| Trasimene Trebia, LP | Director10% Owner | 5 |
| Foley William P II | Director10% Owner | 4 |
| Horn Caroline | Director | 4 |
| Bgpt Trebia LP | Director10% Owner | 3 |
| Bridgeport Partners Gp LLC | Director10% Owner | 3 |
Top performers
Insiders ranked by realized 90-day signed return on their open-market trades at System1, Inc.. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.
| # | Insider | Trades | Win rate | Avg | Median | Best | Worst |
|---|---|---|---|---|---|---|---|
| 1 | Cannae Holdings, Inc. | 16 | 94% | +28.6% | +35.5% | +47.1% | -8.0% |
| 2 | Cannae Holdings, LLC | 16 | 94% | +28.6% | +35.5% | +47.1% | -8.0% |
| 3 | Lone Star Friends Trust | 4 | 75% | +14.6% | +15.1% | +46.4% | -18.0% |
| 4 | Blend Stanley | 7 | 71% | +7.5% | +9.0% | +46.4% | -18.0% |
| 5 | Cee Holdings Trust | 35 | 6% | -22.8% | -21.7% | +8.3% | -54.3% |
All filings
245 Form 4 / 4-A filings, newest first
| Filed | Top transaction | Shares | Price | Value | ||
|---|---|---|---|---|---|---|