Form 4 for SST System1, Inc.
Accepted 2025-07-30 00:00:00 ET · period of report 2025-07-28 · accession 0001907093-25-000012 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-07-30 | 2025-07-29 | SST | Sestanovich Elizabeth | CHRO | A - Grant | $0.00 | +40.0K | 60.3K | +197% | $0 | |
| 2025-07-30 | 2025-07-28 | SST | Sestanovich Elizabeth | CHRO | F - Tax | $7.51 | -135 | 20.3K | -0.7% | -$1,014 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class A Common Stock | 2025-07-29 | A | A | 40,000 | $0.00 | 60,317 | D | — | — | (F3) The Reporting Person was granted 40,000 restricted stock units ("RSUs") in connection with his continued employment with System1, Inc. ("SST"). Each RSU represents the right to receive one share of SST Class A Common Stock upon vesting. Subject to the continued employment of Ms. Sestanovich through the applicable vesting date, one-third of the RSUs will vest on July 15, 2026, and the remaining two-thirds will vest in 8 substantially equal quarterly installments on each quarterly anniversary thereafter. (F4) Includes 44,770 unvested RSUs. |
| 2 | Common | Class A Common Stock | 2025-07-28 | F | D | 135 | $7.51 | 20,317 | D | — | — | (F1) Upon the vesting of 375 restricted stock units ("RSUs") previously granted to the reporting person, the Company withheld 135 shares to cover the reporting person's tax withholding obligation with respect to the vesting of such RSUs. (F2) Includes 4,770 unvested RSUs. |