System1, Inc.

SST·NYSE·$2.84Share Price as of 11/2·$28MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/12/26 10-K/AFY 202504/30/26 10-KFY 202503/11/26 10-QQ3 ended 09/30/2511/05/25

Disclosures

8-KCurrent report10/30/26 8-KCurrent report08/05/26 8-KCurrent report08/05/26 8-KCurrent report07/24/26 8-KCurrent report06/01/26

Prospectuses and Registrations

S-3Shelf registration08/04/26 S-8Registration of securities for employees06/25/26 S-3Shelf registration06/27/25 S-8Registration of securities for employees06/27/25 S-8Registration of securities for employees04/23/25

Proxies

DEF 14ADefinitive proxy06/22/26 PRE 14APreliminary proxy06/11/26 DEF 14ADefinitive proxy05/19/25 PRE 14APreliminary proxy05/08/25 DEFA14AAdditional proxy materials05/31/24

Ownership

Form 4Insider transaction07/17/26 Form 4Insider transaction07/17/26 Form 4Insider transaction07/17/26 Form 4Insider transaction07/17/26 Form 4Insider transaction06/02/26

Other

EFFECTRequest for effectiveness08/06/26 DRSDRS07/15/26 EFFECTRequest for effectiveness07/08/25 CORRESPCorrespondence with the SEC07/03/25 UPLOADLetter from the SEC07/03/25