SST
insider transactionsSystem1, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 2 different insiders made open-market purchases in the last 365 days, totalling $368.3K.
Net shares · 365d
+69.7K
69.7K buy · 0 sell
Net value · 365d
$368.3K
$368.3K in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
5
69.7K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Other·F
General Counsel & Secretary
$771
341 sh · $2.26
Own -0%
-
Other·F
Chief People Officer
$771
341 sh · $2.26
Own -1%
-
Other·F
Chief Financial Officer
$680
301 sh · $2.26
Own -0%
-
Buy·P
Chief Financial Officer
$80.7K
26.9K sh · $3.00
Own +22%
-
Other·F
Chief Ad Operations Officer
$748
331 sh · $2.26
Own -0%
-
Other·F
Chief People Officer
$882
211 sh · $4.18
Own -0%
-
Other·F
Chief Ad Operations Officer
$966
231 sh · $4.18
Own -0%
-
Other·F
Chief Financial Officer
$1.1K
258 sh · $4.18
Own -0%
-
Other·F
General Counsel & Secretary
$882
211 sh · $4.18
Own -0%
-
Other·F
Chief Ad Operations Officer
$1.6K
371 sh · $4.40
Own -1%
-
Other·F
Chief People Officer
$1.7K
377 sh · $4.40
Own -1%
-
Other·F
Chief Financial Officer
$1.5K
345 sh · $4.40
Own -0%
-
Other·F
General Counsel & Secretary
$1.7K
377 sh · $4.40
Own -1%
-
Other·F
Chief People Officer
$976
158 sh · $6.18
Own -0%
-
Other·F
Chief Financial Officer
$1.6K
263 sh · $6.18
Own -0%
-
Other·F
Chief Ad Operations Officer
$1.5K
235 sh · $6.18
Own -0%
-
Other·F
General Counsel & Secretary
$1.3K
214 sh · $6.18
Own -0%
-
Other·F
Chief Ad Operations Officer
$3.0K
377 sh · $7.94
Own -1%
-
Other·F
General Counsel & Secretary
$3.0K
382 sh · $7.94
Own -1%
-
Other·F
Chief People Officer
$2.2K
282 sh · $7.94
Own -0%
-
Other·F
Chief Financial Officer
$2.8K
352 sh · $7.94
Own -0%
-
Buy·P
TenPercentOwner
$80.6K
11.0K sh · $7.32
Own +1%
-
Buy·P
TenPercentOwner
$86.8K
12.6K sh · $6.90
Own +1%
-
Buy·P
TenPercentOwner
$78.7K
12.6K sh · $6.25
Own +1%
-
Buy·P
TenPercentOwner
$41.5K
6.6K sh · $6.32
Own +1%
-
Grant·A
Director
$0
15.0K sh
Own +67%
-
Grant·A
Director
$0
15.0K sh
Own +64%
-
Grant·A
Director
$0
15.0K sh
Own +59%
-
Grant·A
Director
$0
15.0K sh
Own +27%
-
Grant·A
Director
$0
15.0K sh
Own +74%
-
Grant·A
Director
$0
15.0K sh
Own +64%
-
Grant·A
Director
$0
15.0K sh
Own +56%
-
Grant·A
Chief Financial Officer
$0
20.0K sh
Own +38%
-
Grant·A
Chief Financial Officer
$0
50.0K sh
Own +70%
-
Grant·A
Chief People Officer
$0
40.0K sh
Own +197%
-
Grant·A
General Counsel & Secretary
$0
52.5K sh
Own +290%
-
Grant·A
Chief Ad Operations Officer
$0
40.0K sh
Own +146%
-
Grant·A
Ursini Charles KEY
President & COO
$0
337.5K sh
Own +1125%
-
Other·F
Chief Financial Officer
$1.7K
224 sh · $7.51
Own -0%
-
Other·F
Chief People Officer
$1.0K
135 sh · $7.51
Own -1%
-
Other·F
General Counsel & Secretary
$1.4K
191 sh · $7.51
Own -1%
-
Other·F
Chief Ad Operations Officer
$1.5K
206 sh · $7.51
Own -1%
-
Other·F
Chief People Officer
$1.5K
240 sh · $6.33
Own -1%
-
Other·F
Chief Ad Operations Officer
$2.1K
330 sh · $6.33
Own -1%
-
Other·F
General Counsel & Secretary
$2.2K
341 sh · $6.33
Own -2%
-
Other·F
Chief Financial Officer
$1.9K
300 sh · $6.33
Own -0%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Apr 15, 2026 | Weinrot Daniel J | Other F | 341 | $771 |
| Apr 15, 2026 | Sestanovich Elizabeth | Other F | 341 | $771 |
| Apr 15, 2026 | Kidambi Tridivesh KEY | Other F | 301 | $680 |
| Apr 15, 2026 | Kidambi Tridivesh KEY | Buy P | 26.9K | $80.7K |
| Apr 15, 2026 | Coppola Brian | Other F | 331 | $748 |
| Jan 28, 2026 | Sestanovich Elizabeth | Other F | 211 | $882 |
| Jan 28, 2026 | Coppola Brian | Other F | 231 | $966 |
| Jan 28, 2026 | Kidambi Tridivesh KEY | Other F | 258 | $1.1K |
| Jan 28, 2026 | Weinrot Daniel J | Other F | 211 | $882 |
| Jan 15, 2026 | Coppola Brian | Other F | 371 | $1.6K |
| Jan 15, 2026 | Sestanovich Elizabeth | Other F | 377 | $1.7K |
| Jan 15, 2026 | Kidambi Tridivesh KEY | Other F | 345 | $1.5K |
| Jan 15, 2026 | Weinrot Daniel J | Other F | 377 | $1.7K |
| Oct 28, 2025 | Sestanovich Elizabeth | Other F | 158 | $976 |
| Oct 28, 2025 | Kidambi Tridivesh KEY | Other F | 263 | $1.6K |
| Oct 28, 2025 | Coppola Brian | Other F | 235 | $1.5K |
| Oct 28, 2025 | Weinrot Daniel J | Other F | 214 | $1.3K |
| Oct 15, 2025 | Coppola Brian | Other F | 377 | $3.0K |
| Oct 15, 2025 | Weinrot Daniel J | Other F | 382 | $3.0K |
| Oct 15, 2025 | Sestanovich Elizabeth | Other F | 282 | $2.2K |
| Oct 15, 2025 | Kidambi Tridivesh KEY | Other F | 352 | $2.8K |
| Aug 22, 2025 | CEE Holdings Trust | Buy P | 11.0K | $80.6K |
| Aug 21, 2025 | CEE Holdings Trust | Buy P | 12.6K | $86.8K |
| Aug 20, 2025 | CEE Holdings Trust | Buy P | 12.6K | $78.7K |
| Aug 19, 2025 | CEE Holdings Trust | Buy P | 6.6K | $41.5K |
| Jul 31, 2025 | Horn Caroline | Grant A | 15.0K | $0 |
| Jul 31, 2025 | Naidu Taryn Jogi | Grant A | 15.0K | $0 |
| Jul 31, 2025 | Kazerani Moujan | Grant A | 15.0K | $0 |
| Jul 31, 2025 | Civantos John | Grant A | 15.0K | $0 |
| Jul 31, 2025 | Kumar Tanmay | Grant A | 15.0K | $0 |
| Jul 31, 2025 | Caswell Ryan R. | Grant A | 15.0K | $0 |
| Jul 31, 2025 | MARTIRE FRANK R | Grant A | 15.0K | $0 |
| Jul 29, 2025 | Kidambi Tridivesh KEY | Grant A | 20.0K | $0 |
| Jul 29, 2025 | Kidambi Tridivesh KEY | Grant A | 50.0K | $0 |
| Jul 29, 2025 | Sestanovich Elizabeth | Grant A | 40.0K | $0 |
| Jul 29, 2025 | Weinrot Daniel J | Grant A | 52.5K | $0 |
| Jul 29, 2025 | Coppola Brian | Grant A | 40.0K | $0 |
| Jul 29, 2025 | Ursini Charles KEY | Grant A | 337.5K | $0 |
| Jul 28, 2025 | Kidambi Tridivesh KEY | Other F | 224 | $1.7K |
| Jul 28, 2025 | Sestanovich Elizabeth | Other F | 135 | $1.0K |
| Jul 28, 2025 | Weinrot Daniel J | Other F | 191 | $1.4K |
| Jul 28, 2025 | Coppola Brian | Other F | 206 | $1.5K |
| Jul 15, 2025 | Sestanovich Elizabeth | Other F | 240 | $1.5K |
| Jul 15, 2025 | Coppola Brian | Other F | 330 | $2.1K |
| Jul 15, 2025 | Weinrot Daniel J | Other F | 341 | $2.2K |
| Jul 15, 2025 | Kidambi Tridivesh KEY | Other F | 300 | $1.9K |
About SST insider trading
This page tracks insider transactions for System1, Inc. (SST) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.