C3IS INC (CISS)
Institutional ownership reported to the SEC as of Q1 2026, across 10 quarters.
3
Reporting holders
$9.9K
Reported value
0.0%
Held as options
-2
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| StoneX Group Inc. | $8.6K | 10,435 | 0.00% | new | NEW |
| SUMMIT SECURITIES GROUP LLC | $1.2K | 1,508 | 0.00% | new | NEW |
| HRT FINANCIAL LP | $63 | 76,520 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | S.H.N. Financial Investments Ltd. | 0.4% |
| 2026-08-14 | 13G/A | L1 Capital Global Opportunities Master Fund, Ltd. | 1.7% |
| 2026-08-04 | 13G | Ascent Partners Fund LLCwith 8 co-filers | 10.0% |
| 2026-08-03 | 13G/A | Alta Partners LLC | 8.2% |
| 2026-08-03 | 13G | CVI Investments, Inc.with 1 co-filers | 9.9% |
| 2026-07-31 | 13G | Lind Global Fund III LPwith 2 co-filers | 10.0% |
| 2026-07-30 | 13D/A | Imperial Petroleum Inc. | 68.8% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q1 2026 | 3 | $9.9K | 88,463 | 3 | 0 | 0 | 0.0% |
| Q4 2025 | 5 | $240.7K | 1,046,681 | 2 | 1 | 0 | 0.0% |
| Q3 2025 | 3 | $268.7K | 127,735 | 2 | 1 | 0 | 0.0% |
| Q2 2025 | 4 | $122.7K | 37,401 | 3 | 0 | 1 | 0.0% |
| Q1 2025 | 4 | $133.6K | 205,583 | 4 | 0 | 0 | 0.0% |
| Q4 2024 | 1 | $65 | 113 | 0 | 0 | 0 | 0.0% |
| Q1 2024 | 9 | $55.2K | 1,588,244 | 6 | 2 | 0 | 0.0% |
| Q4 2023 | 10 | $41.7K | 78,829 | 3 | 1 | 1 | 0.0% |
| Q3 2023 | 9 | $13.0K | 28,304 | 2 | 0 | 2 | 0.0% |
| Q2 2023 | 10 | $148.2K | 133,500 | 10 | 0 | 0 | 0.0% |