InsiderTrades

Form 4 for SST System1, Inc.

Accepted 2025-07-31 00:00:00 ET · period of report 2025-07-29 · accession 0002018813-25-000002 · 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
2025-07-31 2025-07-29 SST Ursini Charles Pres, COO, Dir A - Grant $0.00 +337.5K 367.5K +1,125% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Class A Common Stock 2025-07-29 A A 337,500 $0.00 367,500 D — — (F1) The Reporting Person was granted 337,500 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 Mr. Ursini 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. (F3) Represents the total number of shares held after the Issuer's completion of a 1-for-10 reverse stock split that occurred on June 11, 2025. (F2) Includes 337,500 unvested RSUs.