SeaStar Medical Holding Corp
ICU- 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; 18 institutions reported holding it in 13F filings for Q2 2026, worth $582.1K in total; no superinvestor holds it.
Other share classesICUCW
13F holders, Q1 2026
Institutional positions in SeaStar Medical Holding Corp as of Mar 31, 2026. 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
- 17
- −3 vs. Q4 2025
- Shares held
- 131.6K
- +89.5K (+213.0%) vs. Q4 2025Converted for a 1-for-10 split
- Total value
- $489.4K
- +$389.0K (+387.1%) vs. Q4 2025
- New holders
- 5
- 4 more added
- Sold out
- 8
- 2 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ICU 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 | 18 | $582.1K |
| Q1 2026 | 17 | $489.4K |
| Q4 2025 | 21 | $191.1K |
| Q3 2025 | 28 | $624.3K |
| Q2 2025 | 26 | $204.7K |
| Q1 2025 | 26 | $1.50M |
| Q4 2024 | 20 | $351.3K |
| Q3 2024 | 15 | $584.3K |
| Q2 2024 | 17 | $1.16M |
| Q1 2024 | 29 | $2.80M |
| Q4 2023 | 23 | $375.4K |
| Q3 2023 | 14 | $68.3K |
| Q2 2023 | 13 | $289.6K |
| Q1 2023 | 11 | $1.85M |
| Q4 2022 | 10 | $4.82M |
| Q3 2022 | 1 | $401.0K |
| 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, Q1 2026
Shares, value and share of portfolio for each institution holding SeaStar Medical Holding Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Geode Capital Management, LLC | 55,642 | $207.0K | 0.00% | +55,642 | New |
| Vanguard Capital Management LLC | 28,791 | $107.1K | 0.00% | +28,791 | New |
| Jane Street Group, LLC | 27,960 | $104.0K | 0.00% | +15,265+120.2% | AddedConverted for a 1-for-10 split |
| Vanguard Fiduciary Trust Co | 13,692 | $50.9K | 0.00% | +13,692 | New |
| The PNC Financial Services Group, Inc. | 1,748 | $6.50K | 0.00% | 00.0% | UnchangedConverted for a 1-for-10 split |
| Tower Research Capital LLC (TRC) | 1,395 | $5.19K | 0.00% | +1,395 | New |
| BlackRock, Inc. | 913 | $3.40K | 0.00% | 00.0% | UnchangedConverted for a 1-for-10 split |
| UBS Group AG | 793 | $2.95K | 0.00% | −527−39.9% | ReducedConverted for a 1-for-10 split |
| Advisor Group Holdings, Inc. | 230 | $854 | 0.00% | 00.0% | UnchangedConverted for a 1-for-10 split |
| GWM Advisors LLC | 176 | $655 | 0.00% | 00.0% | UnchangedConverted for a 1-for-10 split |
| Vanguard Global Advisers, LLC | 165 | $614 | 0.00% | +165 | New |
| TD Waterhouse Canada Inc. | 22 | $78 | 0.00% | +0+1.9% | AddedConverted for a 1-for-10 split |
| Morgan Stanley | 20 | $74 | 0.00% | 00.0% | UnchangedConverted for a 1-for-10 split |
| SBI Securities Co., Ltd. | 14 | $52 | 0.00% | −1−5.4% | ReducedConverted for a 1-for-10 split |
| SOA Wealth Advisors, LLC. | 6 | $22 | 0.00% | +1+9.1% | AddedConverted for a 1-for-10 split |
| HighMark Wealth Management LLC | 2 | $7 | 0.00% | 00.0% | UnchangedConverted for a 1-for-10 split |
| CWM, LLC | 1 | $4 | 0.00% | +1+900.0% | AddedConverted for a 1-for-10 split |
| Trinity Financial Advisors LLC | 0 | $0 | 0.00% | −7,500−100.0% | Sold outConverted for a 1-for-10 split |
| Northern Trust Corp | 0 | $0 | 0.00% | −6,841−100.0% | Sold outConverted for a 1-for-10 split |
| Dynamic Advisor Solutions LLC | 0 | $0 | 0.00% | −2,928−100.0% | Sold outConverted for a 1-for-10 split |
| Toronto Dominion Bank | 0 | $0 | 0.00% | −2,500−100.0% | Sold outConverted for a 1-for-10 split |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −2,320−100.0% | Sold outConverted for a 1-for-10 split |
| Tyche Wealth Partners LLC | 0 | $0 | 0.00% | −1,770−100.0% | Sold outConverted for a 1-for-10 split |
| Great Valley Advisor Group, Inc. | 0 | $0 | 0.00% | −1,000−100.0% | Sold outConverted for a 1-for-10 split |
| Bank of America Corp | 0 | $0 | 0.00% | −33−100.0% | Sold outConverted for a 1-for-10 split |
| Vanguard Group Inc | – | – | – | – | Not filed |