Who owns SeaStar Medical Holding Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ICUCW from SEC Form 13F filings across 15 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 15 institutions disclosed 1.1M shares of SeaStar Medical Holding Corp worth $915,269 — about 28% of shares outstanding; the largest disclosed holder is BOOTHBAY FUND MANAGEMENT, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
15
13F holders
$915,269
value, 2026 filers
28%
of shares outstanding (1.1M sh)
5
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ICUCW's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BOOTHBAY FUND MANAGEMENT, LLC | 245,200 | $899,884 | 0.0% | 6% | 0.0% |
| 2 | Linden Advisors LP | 218,073 | $3,511 | 0.0% | 5.3% | 0.0% |
| 3 | GOLDMAN SACHS GROUP INC | 211,381 | $3,657 | 0.0% | 5.2% | 0.0% |
| 4 | LMR Partners LLP | 125,000 | $2,163 | 0.0% | 3.1% | 0.0% |
| 5 | SkyView Investment Advisors, LLCNEW | 64,658 | $1,000 | 0.0% | 1.6% | new |
| 6 | Clear Street Group Inc. | 46,690 | $808 | 0.0% | 1.1% | +0.4% |
| 7 | Virtu Financial LLCNEW | 40,316 | $1,000 | 0.0% | 1% | new |
| 8 | TENOR CAPITAL MANAGEMENT Co., L.P. | 40,000 | $692 | 0.0% | 1% | 0.0% |
| 9 | SUSQUEHANNA INTERNATIONAL GROUP, LLPNEW | 36,179 | $539 | 0.0% | 0.9% | new |
| 10 | EQUITEC PROPRIETARY MARKETS, LLC | 35,700 | $618 | 0.0% | 0.9% | 0.0% |
| 11 | Cruiser Capital Advisors, LLC | 32,473 | $562 | 0.0% | 0.8% | 0.0% |
| 12 | TWO SIGMA SECURITIES, LLCNEW | 24,322 | $421 | 0.0% | 0.6% | new |
| 13 | StoneX Group Inc.NEW | 11,086 | $208 | 0.0% | 0.3% | new |
| 14 | WOLVERINE ASSET MANAGEMENT LLC | 11,081 | $192 | 0.0% | 0.3% | -9.8% |
| 15 | UBS Group AG | 801 | $14 | 0.0% | 0% | +11.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation. Research, not investment advice.