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C3is
CISS
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Overview
Overview
News
News
Posts
Posts
Financials
Financials
Forecast
Forecast
Valuation
Valuation
Shareholders
Shareholders
Profile
Profile
All Shareholders
Institutional Holders
Insiders
All Shareholders
Shareholder Type
Individuals & Insiders
41.30%
Public and others
29.45%
Institutions
21.75%
VC/PE firms
7.49%
Private companies
<0.01%
Major Shareholders
Latest
Major Shareholders Latest
Shareholder
% Held
Shares Held
Change %
Shares Changed
Report Date
Timothy Horne
41.28%
135.00K
--
+135.00K
08/27/2026
Alta Partners LLC
8.71%
28.50K
--
+28.50K
07/28/2026
Heights Capital Management, Inc.
7.49%
24.50K
--
+24.50K
07/27/2026
Jane Street Group, LLC
7.16%
23.43K
--
+23.43K
08/13/2026
Ascent Partners Fund LLC
3.84%
12.57K
--
+12.57K
08/04/2026
The Lind Partners, LLC
1.42%
4.64K
--
+4.64K
06/28/2026
TowerView LLC
0.38%
1.25K
--
+1.25K
06/30/2026
Hudson River Trading LLC
0.19%
611.00
1.88%
+338.00
06/30/2026
Evergreen Capital Management LLC
0.03%
99.00
0.72%
+0
03/31/2026
Tsiakmakis Athanasios
0.02%
71.00
0.52%
+0
01/09/2026
Ayrton Capital LLC
0.01%
47.00
0.34%
+0
12/31/2025
Arethusa Properties Ltd.
<0.01%
13.00
0.03%
+0
08/26/2026
Harry Vafias
Non-Executive Chairman
<0.01%
6.00
0.01%
+1.00
08/26/2026
L1 Global Manager Pty Ltd
<0.01%
1.00
<0.01%
+1.00
08/14/2026
Caitong International Asset Management Co., Limited
<0.01%
1.00
--
+1.00
06/30/2026
Flawless Management,Inc
<0.01%
1.00
<0.01%
+0
08/26/2026
Sterne Agee Asset Management, Inc.
0.00%
0.00
0.28%
-37.00
06/30/2026
Shamir Capital
0.00%
0.00
0.20%
-76.00
08/14/2026
Summit Securities Group LLC
0.00%
0.00
0.04%
-5.00
06/30/2026