System1, Inc. (SST) Insider Ownership

Historic Insider Ownership Trends

As of June 12, 2026, System1's top three insider holders are Holdings, Inc. Cannae (TenPercentOwner, 77.82Mn shares), Christopher Stephen Phillips (Director, 30.10Mn shares), Holdings, Inc. Cannae (TenPercentOwner, 27.01Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
William P Ii Foley - 24,000 0 12 May, 2022
Frank R Martire - 41,575 0 04 Aug, 2025
L Michael Blend - 0 8,448,338 01 Feb, 2022
Taryn Jogi Naidu - 38,562 0 04 Aug, 2025
Daniel J Weinrot General Counsel Secretary 69,053 0 17 Apr, 2026
Holdings, Inc. Cannae - 0 77,818,426 19 May, 2022
Trebia, Lp Trasimene - 6,601,898 0 20 Apr, 2022
Tanmay Kumar - 35,196 0 04 Aug, 2025
Trebia Lp Bgpt - 4,450,879 0 20 Apr, 2022
Ryan R. Caswell - 38,577 0 04 Aug, 2025
Moujan Kazerani - 0 96,112 07 Mar, 2022
William Dexter Fowler - 218,433 0 13 Jun, 2024
Tridivesh Kidambi - 436,093 0 02 Feb, 2022
Brian Coppola Chief Product Officer 225,969 0 02 Feb, 2022
Jennifer Mindy Prince - 222,433 0 13 Jun, 2024
Elizabeth Sestanovich Chief People Officer 208,595 0 02 Feb, 2022
Paul Filsinger President 540,868 0 02 Feb, 2022
Caroline Horn - 37,418 0 04 Aug, 2025
Jennifer Lynn Robinson Chief Technology Officer 161,943 0 20 Aug, 2024
Christopher Stephen Phillips - 0 30,100,499 07 Mar, 2022
Develop It Ltd Just - 725,000 0 07 Mar, 2022
Star Friends Trust Lone - 5,731,423 0 09 Dec, 2022
Stanley Blend - 0 8,477,861 18 Dec, 2023
John Civantos - 70,613 0 05 Aug, 2025
Holdings Trust Cee - 919,555 0 26 Aug, 2025
Charles Ursini President Coo 367,500 0 31 Jul, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
15 Apr, 2026 Daniel J Weinrot Class A Common Stock D 341 $2.26 69,053 D F
15 Apr, 2026 Daniel J Weinrot Class A Common Stock D 341 $2.26 69,053 D F
15 Apr, 2026 Elizabeth Sestanovich Class A Common Stock D 341 $2.26 58,948 D F
15 Apr, 2026 Tridivesh Kidambi Class A Common Stock A 26,910 $3.00 146,816 D P
15 Apr, 2026 Brian Coppola Class A Common Stock D 331 $2.26 65,898 D F
15 Apr, 2026 Tridivesh Kidambi Class A Common Stock D 301 $2.26 146,515 D F
28 Jan, 2026 Tridivesh Kidambi Class A Common Stock D 258 $4.18 119,906 D F
28 Jan, 2026 Daniel J Weinrot Class A Common Stock D 211 $4.18 69,394 D F
28 Jan, 2026 Elizabeth Sestanovich Class A Common Stock D 211 $4.18 59,289 D F
28 Jan, 2026 Daniel J Weinrot Class A Common Stock D 211 $4.18 69,394 D F
28 Jan, 2026 Daniel J Weinrot Class A Common Stock D 211 $4.18 69,394 D F
28 Jan, 2026 Brian Coppola Class A Common Stock D 231 $4.18 66,229 D F
15 Jan, 2026 Daniel J Weinrot Class A Common Stock D 377 $4.40 69,605 D F
15 Jan, 2026 Brian Coppola Class A Common Stock D 371 $4.40 66,460 D F
15 Jan, 2026 Daniel J Weinrot Class A Common Stock D 377 $4.40 69,605 D F
15 Jan, 2026 Daniel J Weinrot Class A Common Stock D 377 $4.40 69,605 D F
15 Jan, 2026 Elizabeth Sestanovich Class A Common Stock D 377 $4.40 59,500 D F
15 Jan, 2026 Tridivesh Kidambi Class A Common Stock D 345 $4.40 120,164 D F
28 Oct, 2025 Tridivesh Kidambi Class A Common Stock D 263 $6.18 120,509 D F
28 Oct, 2025 Brian Coppola Class A Common Stock D 235 $6.18 66,831 D F