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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.

Insider
Date
Role
Action
Shares
Price
Amount
Kidambi Tridivesh
15 Apr 2026
Chief Financial Officer
Buy
26,910
$3.00
$80.73K
CEE Holdings Trust
22 Aug 2025
10% owner
Buy
11,015
$7.32
$80.63K
CEE Holdings Trust
21 Aug 2025
10% owner
Buy
12,584
$6.90
$86.83K
CEE Holdings Trust
20 Aug 2025
10% owner
Buy
12,584
$6.25
$78.65K
CEE Holdings Trust
19 Aug 2025
10% owner
Buy
6,567
$6.32
$41.50K
Civantos John
13 Jun 2025
Director
Buy
6,158
$4.01
$24.69K
Civantos John
12 Jun 2025
Director
Buy
18,842
$3.89
$73.30K
CEE Holdings Trust
16 Sep 2024
10% owner
Buy
8,412
$1.24
$10.43K
CEE Holdings Trust
12 Sep 2024
10% owner
Buy
3,372
$1.24
$4.18K
CEE Holdings Trust
11 Sep 2024
10% owner
Buy
4,034
$1.20
$4.84K
CEE Holdings Trust
10 Sep 2024
10% owner
Buy
4,407
$1.19
$5.24K
CEE Holdings Trust
9 Sep 2024
10% owner
Buy
2,196
$1.19
$2.61K
CEE Holdings Trust
6 Sep 2024
10% owner
Buy
11,507
$1.22
$14.04K
CEE Holdings Trust
5 Sep 2024
10% owner
Buy
4,352
$1.22
$5.31K
CEE Holdings Trust
4 Sep 2024
10% owner
Buy
8,547
$1.24
$10.60K
CEE Holdings Trust
3 Sep 2024
10% owner
Buy
1,601
$1.23
$1.97K
CEE Holdings Trust
30 Aug 2024
10% owner
Buy
15,205
$1.24
$18.85K
CEE Holdings Trust
23 Aug 2024
10% owner
Buy
37,477
$1.21
$45.35K
CEE Holdings Trust
21 Aug 2024
10% owner
Buy
8,896
$1.24
$11.03K
CEE Holdings Trust
20 Aug 2024
10% owner
Buy
1,500
$1.25
$1.88K
CEE Holdings Trust
16 Aug 2024
10% owner
Buy
11,963
$1.23
$14.71K
CEE Holdings Trust
15 Aug 2024
10% owner
Buy
14,142
$1.08
$15.27K
CEE Holdings Trust
14 Aug 2024
10% owner
Buy
4,384
$1.06
$4.65K
CEE Holdings Trust
13 Aug 2024
10% owner
Buy
965
$1.10
$1.06K
CEE Holdings Trust
11 Jul 2024
10% owner
Buy
6,749
$1.45
$9.79K
CEE Holdings Trust
10 Jul 2024
10% owner
Buy
67,186
$1.43
$96.08K
CEE Holdings Trust
9 Jul 2024
10% owner
Buy
45,616
$1.45
$66.14K
CEE Holdings Trust
5 Jul 2024
10% owner
Buy
2,355
$1.45
$3.41K
CEE Holdings Trust
3 Jul 2024
10% owner
Buy
248
$1.45
$359.60
CEE Holdings Trust
2 Jul 2024
10% owner
Buy
75,106
$1.43
$107.40K
CEE Holdings Trust
1 Jul 2024
10% owner
Buy
66,290
$1.44
$95.46K
CEE Holdings Trust
28 Jun 2024
10% owner
Buy
23,136
$1.45
$33.55K
CEE Holdings Trust
27 Jun 2024
10% owner
Buy
50,154
$1.40
$70.22K
CEE Holdings Trust
26 Jun 2024
10% owner
Buy
43,307
$1.45
$62.80K
CEE Holdings Trust
25 Jun 2024
10% owner
Buy
18,305
$1.43
$26.18K
CEE Holdings Trust
24 Jun 2024
10% owner
Buy
1,200
$1.45
$1.74K
CEE Holdings Trust
21 Jun 2024
10% owner
Buy
4,431
$1.44
$6.38K
CEE Holdings Trust
20 Jun 2024
10% owner
Buy
2,382
$1.45
$3.45K
Lone Star Friends Trust
17 Jun 2024
10% owner
Sell indirect
4,775,000
$1.50
$7.16M
Blend L Michael
17 Jun 2024
CEO & Chairman
Sell
725,000
$1.50
$1.09M
Blend Stanley
19 Mar 2024
10% owner
Buy indirect
245
$1.42
$347.90
Blend Stanley
15 Mar 2024
10% owner
Buy indirect
11,368
$1.42
$16.14K
Blend Stanley
15 Dec 2023
10% owner
Buy indirect
880,000
$1.42
$1.25M
Cannae Holdings, Inc.
6 Sep 2023
10% owner
Sell indirect
110,000
$1.85
$203.50K
Lone Star Friends Trust
7 Dec 2022
10% owner
Buy
2,146
$4.85
$10.41K
Lone Star Friends Trust
30 Nov 2022
10% owner
Buy
6,114
$5.07
$31.00K
Lone Star Friends Trust
29 Nov 2022
10% owner
Buy
20,273
$5.05
$102.38K
Lone Star Friends Trust
25 Nov 2022
10% owner
Buy
5,000
$5.01
$25.05K
Lone Star Friends Trust
22 Nov 2022
10% owner
Buy
11,804
$4.99
$58.90K
Lone Star Friends Trust
21 Nov 2022
10% owner
Buy
27,660
$5.00
$138.30K
Lone Star Friends Trust
16 Nov 2022
10% owner
Buy
9,258
$4.99
$46.20K
Lone Star Friends Trust
15 Nov 2022
10% owner
Buy
12,078
$4.78
$57.73K
Kidambi Tridivesh
14 Nov 2022
Chief Financial Officer
Buy
15,942
$4.39
$69.99K
Lone Star Friends Trust
14 Nov 2022
10% owner
Buy
9,200
$4.33
$39.84K
Phillips Christopher Stephen
9 Sep 2022
Director
Sell indirect
1,296,200
$10.00
$12.96M
Phillips Christopher Stephen
7 Sep 2022
Director
Sell indirect
23,842
$11.61
$276.81K
Phillips Christopher Stephen
2 Sep 2022
Director
Sell indirect
165,400
$11.49
$1.90M
Phillips Christopher Stephen
1 Sep 2022
Director
Sell indirect
67,247
$11.42
$767.96K
Phillips Christopher Stephen
31 Aug 2022
Director
Sell indirect
21,087
$11.25
$237.23K
Phillips Christopher Stephen
26 Aug 2022
Director
Sell indirect
80,584
$11.12
$896.09K
Phillips Christopher Stephen
25 Aug 2022
Director
Sell indirect
38,533
$11.02
$424.63K
Phillips Christopher Stephen
24 Aug 2022
Director
Sell indirect
52,749
$11.04
$582.35K
Phillips Christopher Stephen
19 Aug 2022
Director
Sell indirect
19,500
$11.04
$215.30K
Cannae Holdings, Inc.
16 Aug 2022
10% owner
Sell indirect
50,000
$10.20
$509.90K
Cannae Holdings, Inc.
23 May 2022
10% owner
Sell indirect
16,165
$10.64
$172.07K
Cannae Holdings, Inc.
20 May 2022
10% owner
Sell indirect
200,000
$10.55
$2.11M
Cannae Holdings, Inc.
19 May 2022
10% owner
Sell indirect
22,079
$11.01
$243.04K
Cannae Holdings, Inc.
18 May 2022
10% owner
Sell indirect
10,602
$11.32
$119.98K
Cannae Holdings, Inc.
17 May 2022
10% owner
Sell indirect
50,000
$11.04
$552.06K
Cannae Holdings, Inc.
3 May 2022
10% owner
Sell indirect
28,255
$12.58
$355.38K
Cannae Holdings, Inc.
2 May 2022
10% owner
Sell indirect
84,637
$12.79
$1.08M
Cannae Holdings, Inc.
29 Apr 2022
10% owner
Sell indirect
14,509
$13.60
$197.37K
Cannae Holdings, Inc.
29 Apr 2022
10% owner
Sell indirect
335,491
$12.85
$4.31M
Cannae Holdings, Inc.
28 Apr 2022
10% owner
Sell indirect
40,000
$14.43
$577.17K
Cannae Holdings, Inc.
27 Apr 2022
10% owner
Sell indirect
150,000
$13.82
$2.07M
Cannae Holdings, Inc.
22 Apr 2022
10% owner
Sell indirect
50,929
$14.02
$713.99K
Cannae Holdings, Inc.
20 Apr 2022
10% owner
Sell indirect
165,280
$14.03
$2.32M
BGPT Trebia LP
19 Apr 2022
Director
Exercised, kept
2,499,167
$11.50
$28.74M
Trasimene Trebia, LP
19 Apr 2022
Director
Exercised, kept
4,734,167
$11.50
$54.44M
Cannae Holdings, Inc.
19 Apr 2022
10% owner
Sell indirect
334,739
$13.60
$4.55M
Cannae Holdings, Inc.
19 Apr 2022
10% owner
Sell indirect
228,525
$14.56
$3.33M
Phillips Christopher Stephen
19 Apr 2022
Director
Exercised, kept indirect
500,000
$11.50
$5.75M
Lone Star Friends Trust
19 Apr 2022
10% owner
Sold after exercise
285,459
$20.14
$5.75M

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