SEASTAR MEDICAL HOLDING CORP (ICUCW)
Institutional ownership reported to the SEC as of Q2 2026, across 16 quarters.
Institutions report 833,102 shares against 4,406,841 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BOOTHBAY FUND MANAGEMENT, LLC | $899.9K | 245,200 | 0.01% | 15q | HELD |
| GOLDMAN SACHS GROUP INC | $3.7K | 211,381 | 0.00% | 15q | HELD |
| Linden Advisors LP | $3.5K | 218,073 | 0.00% | 15q | HELD |
| LMR Partners LLP | $2.2K | 125,000 | 0.00% | 15q | HELD |
| Virtu Financial LLC | $1.0K | 40,316 | 0.00% | new | NEW |
| Clear Street Group Inc. | $808 | 46,690 | 0.00% | 4q | HELD |
| TENOR CAPITAL MANAGEMENT Co., L.P. | $692 | 40,000 | 0.00% | 15q | HELD |
| EQUITEC PROPRIETARY MARKETS, LLC | $618 | 35,700 | 0.00% | 15q | HELD |
| Cruiser Capital Advisors, LLC | $562 | 32,473 | 0.00% | 15q | HELD |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $539 | 36,179 | 0.00% | new | NEW |
| TWO SIGMA SECURITIES, LLC | $421 | 24,322 | 0.00% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $389 | options only | 0.00% | 15q | OPTIONS |
| StoneX Group Inc. | $208 | 11,086 | 0.00% | new | NEW |
| WOLVERINE ASSET MANAGEMENT LLC | $192 | 11,081 | 0.00% | 15q | -9.8% |
| UBS Group AG | $14 | 801 | 0.00% | 2q | +11.7% |
| SkyView Investment Advisors, LLC | $1 | 64,658 | 0.00% | new | NEW |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-05 | 2026-10-05 | Material agreement entered | filing |
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 |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 14 | $14.8K | 833,102 | 4 | 1 | 1 | 2.6% |
| Q1 2026 | 10 | $21.1K | 722,115 | 1 | 0 | 0 | 3.1% |
| Q4 2025 | 13 | $10.6K | 891,067 | 2 | 0 | 0 | 2.4% |
| Q3 2025 | 15 | $30.4K | 1,092,596 | 2 | 0 | 4 | 2.0% |
| Q2 2025 | 13 | $22.6K | 1,124,429 | 1 | 0 | 1 | 2.0% |
| Q1 2025 | 13 | $41.1K | 1,155,325 | 1 | 0 | 0 | 1.9% |
| Q4 2024 | 13 | $25.4K | 1,181,904 | 1 | 1 | 3 | 1.8% |
| Q3 2024 | 15 | $59.0K | 1,231,231 | 1 | 0 | 3 | 10.8% |
| Q2 2024 | 16 | $79.4K | 1,225,861 | 1 | 1 | 2 | 18.2% |
| Q1 2024 | 21 | $420.6K | 1,637,813 | 1 | 3 | 5 | 9.3% |
| Q4 2023 | 26 | $78.0K | 2,300,516 | 0 | 0 | 8 | 10.4% |
| Q3 2023 | 30 | $50.9K | 3,569,042 | 3 | 0 | 2 | 0.6% |
| Q2 2023 | 30 | $148.0K | 3,869,682 | 1 | 1 | 3 | 5.3% |
| Q1 2023 | 30 | $317.0K | 3,934,645 | 3 | 3 | 6 | 0.6% |
| Q4 2022 | 29 | $340.1K | 3,834,814 | 29 | 0 | 0 | 0.6% |
| Q3 2022 | 1 | $3.2M | 0 | 1 | 0 | 0 | 100.0% |