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System1, Inc.

SST Net selling
CIK 0001805833 #5026 in the set updated 21 Sep 2026
Bought (120 mo)
$3.07M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$55.68M
$0.00 on a plan · $5.75M straight out of an exercise
Sold at will
$49.94M
28 of 29 sales
Net
−$52.62M
−$46.87M against sales at will

By person

26 insiders · 83 transactions
42.1×

Michael Blend holds 42.1 times base salary in stock. $25.35M of shares against $601.49K in salary for 2025.

Salary from the company's own proxy. The shares are what Michael Blend last reported holding, valued at $3.00, the price Class A Common Stock was last bought or sold at on the open market here, on 15 Apr 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Cannae Holdings, Inc. entity
10% owner
$23.42M (17)
−$23.42M
27,012,794
$81.04M
−0.6%
Phillips Christopher Stephen
Director
$18.26M (9)
−$18.26M
39,260,814
$117.78M
−1.7%
Lone Star Friends Trust entity
10% owner
$509.80K (9)
$12.91M (2)
−$12.40M
6,687,846
$20.06M
−27.9%
Blend Stanley
10% owner
$1.27M (3)
+$1.27M
3,251,379
$9.75M
Blend L Michael
CEO & Chairman
$1.09M (1)
−$1.09M
8,448,338
$25.35M
CEE Holdings Trust entity
10% owner
$1.04M (35)
+$1.04M
919,555
$2.76M
+180.9%
Kidambi Tridivesh
Chief Financial Officer
$150.72K (2)
+$150.72K
611,886
$1.84M
Civantos John
Director
$97.99K (2)
+$97.99K
70,613
$211.84K
BGPT Trebia LP entity
Director
4,450,879
$13.35M
−8.2%
Filsinger Paul
President
1,000,267
$3.00M
+7,877%
Just Develop It Ltd entity
10% owner
725,000
$2.18M
Ursini Charles
President & COO
367,500
$1.10M
+1,125%
Coppola Brian
Chief Ad Operations Officer
285,743
$857.23K
Sestanovich Elizabeth
Chief People Officer
260,485
$781.46K
Prince Jennifer Mindy
Director
222,433
$667.30K
Fowler William Dexter
Director
218,433
$655.30K
Robinson Jennifer Lynn
Chief Technology Officer
161,943
$485.83K
Weinrot Daniel J
General Counsel & Secretary
119,539
$358.62K
Kazerani Moujan
Director
115,904
$347.71K
MARTIRE FRANK R
Director
41,575
$124.73K
Caswell Ryan R.
Director
38,577
$115.73K
Naidu Taryn Jogi
Director
38,562
$115.69K
Horn Caroline
Director
37,418
$112.25K
Kumar Tanmay
Director
35,196
$105.59K
FOLEY WILLIAM P II
Director
24,000
$72.00K
Trasimene Trebia, LP entity
Director
0
$0.00
−100.0%

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Nothing of that kind in this period.

What was left out

Form 4 filings counted 264
Amendments (4/A) skipped 10
Filings about a different issuer 1
Unreadable filings 0
Joint filings 33
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 1
Sales at will 28
Transactions with no price 0
Shares from compensation/vesting 127,877,454
Sales filed before the plan box existed 25
History held since 11 Aug 2020