SeaStar Medical Holding Corp
ICUCW- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001831868
In the last 90 days, SeaStar Medical Holding Corp insiders filed 1 open-market purchase and 0 sales; 15 institutions reported holding it in 13F filings for Q2 2026, worth $15.4K in total; no superinvestor holds it.
Other share classesICU
13F holders, Q3 2025
Institutional positions in SeaStar Medical Holding Corp as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 15
- +3 vs. Q2 2025
- Shares held
- 1.34M
- +14.9K (+1.1%) vs. Q2 2025
- Total value
- $29.8K
- +$8.58K (+40.4%) vs. Q2 2025
- New holders
- 3
- 0 more added
- Sold out
- 0
- 4 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ICUCW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 15 | $15.4K |
| Q1 2026 | 10 | $932.6K |
| Q4 2025 | 14 | $10.3K |
| Q3 2025 | 15 | $29.8K |
| Q2 2025 | 13 | $22.2K |
| Q1 2025 | 13 | $40.3K |
| Q4 2024 | 13 | $25.0K |
| Q3 2024 | 14 | $52.6K |
| Q2 2024 | 16 | $65.0K |
| Q1 2024 | 19 | $201.5K |
| Q4 2023 | 26 | $69.9K |
| Q3 2023 | 30 | $50.6K |
| Q2 2023 | 29 | $140.2K |
| Q1 2023 | 31 | $315.0K |
| Q4 2022 | 31 | $338.1K |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding SeaStar Medical Holding Corp; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Atw Spac Management LLC | 245,200 | $6.64K | 0.01% | 00.0% | Unchanged |
| Linden Advisors LP | 218,073 | $6.00K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 211,381 | $5.73K | 0.00% | 00.0% | Unchanged |
| LMR Partners LLP | 125,000 | $3.39K | 0.00% | 00.0% | Unchanged |
| SkyView Investment Advisors, LLC | 64,658 | $2.00K | 0.00% | 00.0% | Unchanged |
| Clear Street Group Inc. | 46,790 | $1.27K | 0.00% | +46,790 | New |
| Tenor Capital Management Co., L.P. | 40,000 | $1.08K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 42,031 | $1.00K | 0.00% | +42,031 | New |
| Equitec Proprietary Markets, LLC | 35,700 | $967 | 0.01% | −44,699−55.6% | Reduced |
| Cruiser Capital Advisors, LLC | 32,473 | $880 | 0.00% | 00.0% | Unchanged |
| Landscape Capital Management, L.L.C. | 18,271 | $495 | 0.00% | −7,928−30.3% | Reduced |
| Wolverine Asset Management LLC | 12,281 | $332 | 0.00% | −21,267−63.4% | Reduced |
| UBS Group AG | 560 | $15 | 0.00% | −248−30.7% | Reduced |
| Toronto Dominion Bank | 178 | $5 | 0.00% | +178 | New |
| Boothbay Fund Management, LLC | 245,200 | – | – | 00.0% | Unchanged |
| Clear Street LLC | – | – | – | – | Not filed |