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SST · System1, Inc. · Shareholders & Ownership

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$2.14 +0.04 (+1.90%)
Market Cap
$21.40M
Shares
10.49M
Volume · Oct 20 33.27K Avg daily vol (3M) 545.78K

Every disclosed holder of SST in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns SST

13F quarter Jun 30, 2026
Holder group Shares % Out
Institutional (13F) 597,922 5.70%
Insiders (Forms 3, 4, 5) 0 0.00%
13D/G-only blocks 5,231,820 49.88%
Remaining 4,658,907 44.42%
Registered funds (N-PORT, not summed) 169,185 1.61%

Shares outstanding: 10,488,649, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of SST

# Holder Shares
1
Stanley Blend
13D CIK 1805833 · Unknown · Jun 17, 2024
1,155,847
2
CEE Holdings Trust
Insider CIK 2012590 · Aug 22, 2025
10% Owner, issuer-wide, not summed
919,555
2.1
CEE Holdings Trust
13G CIK 2012590 · Dec 31, 2023
Rule 13d-1(d), exempt investor
689,737
3
The Blend Family Foundation
13D CIK 2066592 · Unknown · May 2, 2025
554,508
4
Frank R. Martire, Jr.
13D CIK 1814538 · Unknown · Dec 4, 2023
452,309
5
William P. Foley, II
13G CIK 903213 · Unknown · Nov 5, 2025
Rule 13d-1(c), passive investor
390,473
6
Ursini Charles
Insider CIK 2018813 · Jul 29, 2025
Director, President & COO, issuer-wide, not summed
367,500
7
Cannae Holdings, Inc.
13D CIK 1704720 · Unknown · Dec 1, 2025
356,797
8
Blend Stanley
Insider CIK 1912571 · Dec 24, 2024
10% Owner, issuer-wide, not summed
250,000
9
Kidambi Tridivesh
Insider CIK 1906862 · Jul 15, 2026
Chief Financial Officer, issuer-wide, not summed
175,793
10
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
161,513
11
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
127,576
12
Cerity Partners LLC
13F CIK 1566475 · Registered investment adviser · Jun 30, 2026
116,844
13
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
107,513
14
Crescent Grove Advisors, LLC
13F CIK 1713520 · Registered investment adviser · Jun 30, 2026
75,545
15
Civantos John
Insider CIK 1915482 · Jul 31, 2025
Director, issuer-wide, not summed
70,613
16
Weinrot Daniel J
Insider CIK 1624457 · Jul 15, 2026
General Counsel & Secretary, issuer-wide, not summed
59,897
17
Coppola Brian
Insider CIK 1906904 · Jul 15, 2026
Chief Ad Operations Officer, issuer-wide, not summed
59,774
18
Sestanovich Elizabeth
Insider CIK 1907093 · Jul 15, 2026
Chief People Officer, issuer-wide, not summed
51,890
19
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
43,353
19.1
iShares Micro-Cap ETF
Fund S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
17,903
20
MARTIRE FRANK R
Insider CIK 1226913 · Jul 31, 2025
Director, issuer-wide, not summed
41,575
21
Kazerani Moujan
Insider CIK 1845026 · Jul 31, 2025
Director, issuer-wide, not summed
40,292
22
Caswell Ryan R.
Insider CIK 1840522 · Jul 31, 2025
Director, issuer-wide, not summed
38,577
23
Naidu Taryn Jogi
Insider CIK 1519257 · Jul 31, 2025
Director, Chief Executive Officer, issuer-wide, not summed
38,562
24
Horn Caroline
Insider CIK 1907126 · Jul 31, 2025
Director, issuer-wide, not summed
37,418
25
Kumar Tanmay
Insider CIK 1814526 · Jul 31, 2025
Director, issuer-wide, not summed
35,196
26
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
20,063
27
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
13,134
28
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
12,519
29
Leonteq Securities AG
13F CIK 1535950 · Unknown · Jun 30, 2026
12,500
30
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
11,731
31
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
11,502
32
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
10,000
33
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
9,141
34
Ultra-Small Company Market Fund
Fund S000004424 · Registered fund · Jun 30, 2026
Bridgeway Funds, Inc., not summed
7,100
35
Fidelity Total Market Index Fund
Fund S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
3,635
36
Fidelity Series Total Market Index Fund
Fund S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
1,725
37
ROYAL BANK OF CANADA
13F CIK 1000275 · Bank · Jun 30, 2026
1,314
38
1290 VT Micro Cap Portfolio
Fund S000044688 · Registered fund · Jun 30, 2026
EQ Advisors Trust, not summed
1,203
39
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
618
40
JONES FINANCIAL COMPANIES LLLP
13F CIK 815917 · Unknown · Jun 30, 2026
366
41
BNP PARIBAS ARBITRAGE, SA
13F CIK 1166588 · Non-US institution · Jun 30, 2026
86
42
SBI Securities Co., Ltd.
13F CIK 1851815 · Non-US institution · Jun 30, 2026
60
43
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
42
44
OSAIC HOLDINGS, INC.
13F CIK 1677044 · Holding company · Jun 30, 2026
35
45
GROUP ONE TRADING LLC
13F CIK 932540 · Broker-dealer · Jun 30, 2026
33
46
Knights of Columbus U.S. ALL CAP INDEX FUND
Fund S000066639 · Registered fund · Jul 31, 2026
ADVISORS' INNER CIRCLE III, not summed
23
47
Blackstone Alternative Multi-Strategy Fund
Fund S000045538 · Registered fund · Jun 30, 2026
Blackstone Alternative Investment Funds, not summed
20
48
BARCLAYS PLC
13F CIK 312069 · Bank · Jun 30, 2026
9
49
SIGNATUREFD, LLC
13F CIK 1456048 · Registered investment adviser · Jun 30, 2026
1

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Key facts CIK 1805833 CUSIP 87200P208 13F (30d) 1 filings 1 filers Visit website Investor relations