| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Imperial Petroleum Inc./Marshall Islands | 74% | +21% | $53,415,697 | +$35,040,697 | 36,337,209 | +191% | Imperial Petroleum Inc. | 29 Dec 2025 |
| L1 Capital Global Opportunities Master Fund, Ltd. | 10% | $651,523 | 443,213 | L1 Capital Global Opportunities Master Fund, Ltd. | 11 Dec 2025 | |||
| S.H.N. Financial Investments Ltd. | 10% | +243% | $651,523 | +$542,486 | 443,213 | +498% | S.H.N. Financial Investments Ltd. | 11 Dec 2025 |
| Evergreen Capital Management LLC/NV | 10% | $762,326 | 443,213 | Evergreen Capital Management LLC/NV | 11 Dec 2025 | |||
| Athanasios Tsiakmakis | 5% | -67% | $688,000 | +$421,400 | 400,000 | +158% | Athanasios Tsiakmakis | 09 Jan 2026 |
| Flawless Management Inc. | 3.7% | -43% | $229,316 | 100,577 | 0% | Harry N. Vafias | 09 Oct 2025 | |
| Pandora Consultants II SA | 2.7% | $97,917 | 42,946 | Nikolaos Vafias | 30 Sep 2025 |
As of 30 Sep 2025, 3 institutional investors reported holding 127,735 shares of C3is Inc. - Common Stock, par value $0.01 per share (CISS). This represents 1.6% of the company’s total 7,968,127 outstanding shares.