System1, Inc.

NYSE:SSTOTC:SSTPW

Services-Computer Programming, Data Processing, Etc.·MARINA DEL REY, CA

System1 is an American Internet advertising company. Formerly known as OpenMail, it was founded in 2013.

CFO

Kidambi Tridivesh

Financials

20 shown

Type	Period	Ended	Filed
10-Q	Q3 2025	9/30/25	11/5/25	→
10-Q	Q2 2025	6/30/25	8/7/25	→
10-Q	Q1 2025	3/31/25	5/6/25	→
10-K/A	FY 2024	12/31/24	4/25/25	→
10-K	FY 2024	12/31/24	3/10/25	→
10-Q	Q3 2024	9/30/24	11/7/24	→
↓

Earnings Releases (8-K)

18 shown

Filed	Period
11/5/25	Q4 FY2025	→
8/7/25	Q3 FY2025	→
5/6/25	Q2 FY2025	→
3/10/25	Q1 FY2025	→
3/10/25	Q1 FY2025	→
11/7/24	Q4 FY2024	→
↓

News (8-K)

62 shown

Filed	Type	Description
1/9/26	Exec Change	Departure or Appointment of Directors or Certain Officers	→
12/12/25	Delisting	Notice of Delisting or Failure to Satisfy a Continued Listing Rule	→
12/3/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
11/5/25	Reg FD	Regulation FD Disclosure	→
8/7/25	Reg FD	Regulation FD Disclosure	→
6/11/25	Other	Material Modification to Rights of Security Holders	→
↓

Prospectuses & Registrations

36 shown

Filed	Form	Description
6/27/25	S-8	S-8	→
6/27/25	S-3	S-3	→
4/23/25	S-8	S-8	→
6/20/24	S-8	S-8	→
6/10/24	424B3	424B3	→
5/10/24	424B3	424B3	→
↓

Filing History(587 filings)

TypeDateAccessionPeriodSize

Jan 29, 2026

0001628280-26-004229FORM 4

Jan 28, 2026

4.9 KB

Jan 29, 2026

0001628280-26-004228FORM 4

Jan 28, 2026

4.9 KB

Jan 29, 2026

0001628280-26-004227FORM 4

Jan 28, 2026

4.9 KB

Jan 29, 2026

0001628280-26-004226FORM 4

Jan 28, 2026

4.9 KB

Jan 16, 2026

0001628280-26-002464FORM 4

Jan 15, 2026

4.9 KB

Jan 16, 2026

0001628280-26-002463FORM 4

Jan 15, 2026

4.9 KB

Jan 16, 2026

0001628280-26-002462FORM 4

Jan 15, 2026

4.9 KB

Jan 16, 2026

0001628280-26-002461FORM 4

Jan 15, 2026

4.9 KB

8-K

Jan 9, 2026

0001805833-26-0000038-K

Jan 9, 2026

142.1 KB

8-K

Dec 12, 2025

0001805833-25-0000208-K

Dec 8, 2025

165.0 KB

8-K

Dec 3, 2025

0001805833-25-0000188-K

Dec 1, 2025

147.3 KB

SCHEDULE 13G/A

Dec 2, 2025

0001704720-25-000222

—

10.3 KB

SCHEDULE 13D/A

Dec 2, 2025

0001704720-25-000218

—

46.8 KB

SCHEDULE 13D/A

Nov 12, 2025

0001704720-25-000178

—

46.0 KB

8-K

Nov 5, 2025

0001805833-25-0000168-K

Nov 5, 2025

511.0 KB

10-Q

Nov 5, 2025

0001805833-25-00001510-Q

Sep 30, 2025

5.3 MB

8-K

Nov 5, 2025

0001805833-25-0000138-K

Nov 5, 2025

271.5 KB

Oct 30, 2025

0001628280-25-047630FORM 4

Oct 28, 2025

4.9 KB

Oct 30, 2025

0001628280-25-047629FORM 4

Oct 28, 2025

4.9 KB

Oct 30, 2025

0001628280-25-047628FORM 4

Oct 28, 2025

4.9 KB

Oct 30, 2025

0001628280-25-047627FORM 4

Oct 28, 2025

4.9 KB

Oct 17, 2025

0001628280-25-045433FORM 4

Oct 15, 2025

4.9 KB

Oct 17, 2025

0001628280-25-045432FORM 4

Oct 15, 2025

4.9 KB

Oct 17, 2025

0001628280-25-045431FORM 4

Oct 15, 2025

4.9 KB

Oct 17, 2025

0001628280-25-045430FORM 4

Oct 15, 2025

4.9 KB

25 filings shown

Filed	Form	Description
5/19/25	DEF 14A	DEF 14A	→
5/8/25	PRE 14A	PRE 14A	→
5/31/24	DEFA14A	DEFA14A	→
5/20/24	DEFA14A	DEFA14A	→
4/29/24	DEF 14A	DEF 14A	→
6/8/23	DEFA14A	DEFA14A	→
↓

System1, Inc.

Financials

Earnings Releases (8-K)

News (8-K)

Prospectuses & Registrations

Filing History(587 filings)

Proxies

Ownership

Other Filings

Filed	Form	Description
1/29/26	4	4	→
1/29/26	4	4	→
1/29/26	4	4	→
1/29/26	4	4	→
1/16/26	4	4	→
1/16/26	4	4	→
↓

Filed	Form	Description
12/2/25	SCHEDULE 13G/A	SCHEDULE 13G/A	→
12/2/25	SCHEDULE 13D/A	SCHEDULE 13D/A	→
11/12/25	SCHEDULE 13D/A	SCHEDULE 13D/A	→
7/8/25	EFFECT	EFFECT	→
5/5/25	SCHEDULE 13D	SCHEDULE 13D	→
4/22/25	25-NSE	25-NSE	→
↓