C3IS INC

Historical 13F Holders

Symbol
CISS
CUSIP
Y18284169
All holders as of
Q4 2025
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Shares Held, Excluding Options
Total Filers

13D/G Filers

Every filing for Y18284169 since 12/18/2024, newest first.

Filer % of Class Filed
L1 Capital Global Opportunities Master Fund, Ltd. 13G/A Amendment 1 1.7% 8/14/2026
Event 8/14/2026
S.H.N. Financial Investments Ltd. 13G/A Amendment 1 0.4% 8/14/2026
Event 8/14/2026
Evergreen Capital Management LLC/NV 13G/A Amendment 1 10.0% 1/14/2026
Event 12/11/2025
Athanasios Tsiakmakis 13G/A Amendment 1 5.0% 1/13/2026
Event 1/9/2026
Evergreen Capital Management LLC/NV 13G 10.0% 1/8/2026
Event 12/11/2025
Imperial Petroleum Inc./Marshall Islands 13D/A Amendment 8 74.0% 12/30/2025
Event 12/29/2025
S.H.N. Financial Investments Ltd. 13G 10.0% 12/18/2025
Event 12/11/2025
L1 Capital Global Opportunities Master Fund, Ltd. 13G 10.0% 12/17/2025
Event 12/11/2025
Imperial Petroleum Inc./Marshall Islands 13D/A Amendment 7 61.1% 12/15/2025
Event 12/12/2025
S.H.N. Financial Investments Ltd. 13G/A Amendment 1 2.7% 11/14/2025
Event 11/14/2025
Athanasios Tsiakmakis 13G 14.4% 10/28/2025
Event 9/16/2025
Imperial Petroleum Inc./Marshall Islands 13D/A Amendment 6 68.8% 10/10/2025
Event 10/9/2025
Flawless Management Inc. 13D/A Amendment 4
3.7% 10/10/2025
Event 10/9/2025
Pandora Consultants II SA 13G/A Amendment 1
2.7% 10/2/2025
Event 9/30/2025
Flawless Management Inc. 13D/A Amendment 3
6.3% 10/1/2025
Event 9/29/2025
Imperial Petroleum Inc./Marshall Islands 13D/A Amendment 5 86.8% 4/15/2025
Event 4/11/2025

13F Holders by Quarter

Period Filers Shares, Excl. Options Value, Excl. Options
2025 Q4 5 1.05 M $241k
2025 Q3 3 128 k $274k
2025 Q2 5 37.4 k $123k
2025 Q1 1 31.0 $20