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
Key figures
- Insider buysLast 90 days, $2.45K in total
- 1
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +5 vs. previous quarter
- 15
- 13F valueReported value at the end of Q2 2026
- $15.4K
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding ICUCW, Q2 2026
No superinvestor reported holding ICUCW at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by SeaStar Medical Holding Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 19, 2026 (view filing)4:21 PM ET | Aug 18 | 1 day | Messinger MichaelChief Financial Officer | PPurchaseCommon Stock, par value $0.0001 | +750 | $3.27 | +$2.45K | +42.9%2.50K after | |
| Dec 22, 2025 (view filing)6:55 PM ET | Dec 19 | 3 days | Baird Jennifer ADirector | PPurchase | +4.20K | $0.2351 | +$987.42 | +13.1%36.2K after | |
| Dec 11, 2025 (view filing)6:49 PM ET | Dec 9 | 2 days | Messinger MichaelChief Financial Officer | PPurchase | +14.5K | $0.3516 | +$5.10K | +483.3%17.5K after | |
| Aug 28, 2025 (view filing) | Aug 26-27 | 2 days | Van Heel KennethDirector | PPurchaseCommon Stock, par value $0.0001 per share | +35.0K | $0.8814 | +$30.9K | +243.1%49.4K after | 2 lots |
| Aug 25, 2025 (view filing) | Aug 22 | 3 days | Chung KevinChief Medical Officer | PPurchaseCommon Stock, par value $0.0001 per share | +10.0K | $0.80 | +$8.00K | +20.8%58.2K after | |
| Jul 2, 2025 (view filing)7:32 PM ET | Jun 30 | 2 days | Baird Jennifer ADirector | PPurchaseCommon Stock, par value $0.0001 per share | +10.0K | $0.4174 | +$4.17K | +55.6%28.0K after | |
| Jun 27, 2025 (view filing)6:00 AM ET | Jun 24 | 3 daysLate | Neuman JohnDirector | PPurchaseCommon Stock, par value $0.0001 per share | +40.0K | $0.3599 | +$14.4K | +100.0%80.0K after | |
| May 22, 2025 (view filing) | May 20 | 2 days | Baird Jennifer ADirector | PPurchaseCommon Stock, par value $0.0001 per share | +10.0K | $1.28 | +$12.8K | New position10.0K after | |
| May 20, 2025 (view filing) | May 20 | Same day | Chung KevinChief Medical Officer | PPurchaseCommon Stock, par value $0.0001 per share | +4.50K | $1.25 | +$5.63K | +32.9%18.2K after | |
| Feb 27, 2025 (view filing) | Jun 14-Dec 11, 2024 | 258 daysLate | Neuman JohnDirector | PPurchaseCommon Stock, par value $0.0001 per share | +40.0K | $3.83 | +$153.2K | New position40.0K after | 4 lots |
Top 10 13F holders, Q2 2026
The largest institutional positions in SeaStar Medical Holding Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Goldman Sachs Group Inc | 211,381 | $3.66K | 0.00% | 00.0% | Unchanged |
| Linden Advisors LP | 218,073 | $3.51K | 0.00% | 00.0% | Unchanged |
| LMR Partners LLP | 125,000 | $2.16K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 40,316 | $1.00K | 0.00% | +40,316 | New |
| SkyView Investment Advisors, LLC | 64,658 | $1.00K | 0.00% | +64,658 | New |
| Clear Street Group Inc. | 46,690 | $808 | 0.00% | +200+0.4% | Added |
| Tenor Capital Management Co., L.P. | 40,000 | $692 | 0.00% | 00.0% | Unchanged |
| Equitec Proprietary Markets, LLC | 35,700 | $618 | 0.00% | 00.0% | Unchanged |
| Cruiser Capital Advisors, LLC | 32,473 | $562 | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 36,179 | $539 | 0.00% | +36,179 | New |