ICUNasdaqSurgical & Medical Instruments & ApparatusFiscal year ends December 31Also trades as ICUCW
SeaStar Medical Holding Corp
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 12, 2026
$3.11+0.21 (+7.24%)
Close on Oct 19, 2026
- Market cap
- $12.70M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
0M
Shares held, 13F filers
Institutional holders
18
3 new, 1 sold out
Net institutional buying
0M
In Q2 2026
Insider trades, 12 months
3 buys · 0 sales
Net bought $8.54K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Intracoastal Capital LLC | 443,253 | 9.99% | 13G (passive) amendment | Mar 31, 2026 |
| Daniel B. Asher | 3,980,665 | 9.99% | 13G (passive) amendment | Dec 31, 2025 |
| Ayrton Capital LLC | 278,436 | 6.52% | 13G (passive) | Mar 31, 2026 |
| Armistice Capital, LLC | 1,019,958 | 9.99% | 13G (passive) | Mar 31, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of ICU | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Geode Capital Management, LLC | 49,593 | – | $182.01K | −6,049 | 0.00% |
| Vanguard Capital Management LLC | 33,091 | – | $121.44K | +4,300 | 0.00% |
| UBS Group AG | 31,398 | – | $115.23K | +30,605 | 0.00% |
| Vanguard Fiduciary Trust Co | 13,692 | – | $50.25K | – | 0.00% |
| Jane Street Group, LLC | 12,634 | – | $46.37K | −15,326 | 0.00% |
| Northern Trust Corp | 10,402 | – | $38.18K | New | 0.00% |
| PNC Financial Services Group, Inc. | 4,943 | – | $18.14K | +3,195 | 0.00% |
| Tower Research Capital LLC (TRC) | 1,356 | – | $4.98K | −39 | 0.00% |
| BlackRock, Inc. | 913 | – | $3.35K | – | 0.00% |
| Osaic Holdings, Inc. | 195 | – | $714 | −35 | 0.00% |
| NewEdge Advisors, LLC | 176 | – | $647 | – | 0.00% |
| Vanguard Global Advisers, LLC | 165 | – | $606 | – | 0.00% |
| TD Waterhouse Canada Inc. | 22 | – | $106 | – | 0.00% |
| SBI Securities Co., Ltd. | 14 | – | $51 | – | 0.00% |
| SOA Wealth Advisors, LLC. | 6 | – | $22 | – | 0.00% |
| Barclays PLC | 4 | – | $15 | New | 0.00% |
| HighMark Wealth Management LLC | 2 | – | $7 | – | 0.00% |
| Caitong International Asset Management Co., Ltd | 2 | – | $7 | New | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 18 | 0M | 3 / 3 | 4 / 1 | 0M | 0M |
| Q1 2026 | 17 | 0M | 15 / 0 | 2 / 0 | 0M | 0M |
| Q4 2025 | 2 | 0M | 2 / 0 | 0 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of ICU | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Extended Market Index Fund | 33,091 | – | $121.44K | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 21,929 | – | $81.36K | 0.00% | May 31, 2026 |
| Fidelity Total Market Index Fund | 8,656 | – | $32.11K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 5,814 | – | $21.57K | 0.00% | May 31, 2026 |
| Dimensional U.S. Core Equity 2 ETF | 2,835 | – | $8.87K | 0.00% | Jul 31, 2026 |
| Fidelity Nasdaq Composite Index Fund | 447 | – | $1.66K | 0.00% | May 31, 2026 |
| Blackstone Alternative Multi-Strategy Fund | -700 | – | -$2.57K | -0.00% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| Michael Messinger | Chief Financial Officer | 2,500 | Aug 19, 2026 |
| Kevin Chung | Chief Medical Officer | 28,021 | Jul 2, 2026 |
| Eric Schlorff | Chief Executive Officer | 50,140 | Jul 2, 2026 |
| Bradford K. Towne | Principal Accounting Officer | 9,050 | Feb 10, 2026 |
| David A. Green | Chief Financial Officer | 10,323 | Apr 3, 2025 |
| Jennifer A. Baird | Director | 10,620 | Jul 2, 2026 |
| Bernadette N. Vincent | Director | 8,200 | Jul 2, 2026 |
| Heel Kenneth Van | Director | 11,940 | Jul 2, 2026 |
| John Neuman | Director | 16,200 | Jul 2, 2026 |
| Allan Collins | Director | 54,343 | Nov 15, 2024 |
| Rick Barnett | Director | 86,664 | Nov 15, 2024 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Michael Messinger Chief Financial Officer | Aug 18, 2026 | Buy | +750 | $3.27 | $2.45K | 2,500 |
| John Neuman Director | Jul 1, 2026 | Award | +4,000 | – | – | 16,200 |
| Jennifer A. Baird Director | Jul 1, 2026 | Award | +4,000 | – | – | 10,620 |
| Eric Schlorff Chief Executive Officer | Jul 1, 2026 | Award | +10,288 | – | – | 50,140 |
| Heel Kenneth Van Director | Jul 1, 2026 | Award | +4,000 | – | – | 11,940 |
| Bernadette N. Vincent Director | Jul 1, 2026 | Award | +4,000 | – | – | 8,200 |
| Kevin Chung Chief Medical Officer | Jul 1, 2026 | Award | +7,202 | – | – | 28,021 |
| Jennifer A. Baird Director | Feb 6, 2026 | Award | +3,000 | – | – | 6,620 |
| Eric Schlorff Chief Executive Officer | Feb 6, 2026 | Award | +30,000 | – | – | 39,852 |
| Bradford K. Towne Principal Accounting Officer | Feb 6, 2026 | Award | +7,500 | – | – | 9,050 |
| Kevin Chung Chief Medical Officer | Feb 6, 2026 | Award | +15,000 | – | – | 20,819 |
| John Neuman Director | Feb 6, 2026 | Award | +3,000 | – | – | 12,200 |
| Bernadette N. Vincent Director | Feb 6, 2026 | Award | +3,000 | – | – | 4,200 |
| Heel Kenneth Van Director | Feb 6, 2026 | Award | +3,000 | – | – | 7,940 |
| Jennifer A. Baird Director | Dec 19, 2025 | Buy | +4,200 | $0.24 | $1.01K | 36,200 |
| Michael Messinger Chief Financial Officer | Dec 9, 2025 | Buy | +14,500 | $0.35 | $5.08K | 17,500 |
| Heel Kenneth Van Director | Aug 27, 2025 | Buy | +10,000 | $0.86 | $8.60K | 49,400 |
| Heel Kenneth Van Director | Aug 26, 2025 | Buy | +25,000 | $0.89 | $22.25K | 39,400 |
| Kevin Chung Chief Medical Officer | Aug 22, 2025 | Buy | +10,000 | $0.80 | $8.00K | 58,184 |
| Bernadette N. Vincent Director | Jul 10, 2025 | Award | +4,000 | – | – | 12,000 |
| Heel Kenneth Van Director | Jul 10, 2025 | Award | +4,000 | – | – | 14,400 |
| John Neuman Director | Jul 10, 2025 | Award | +4,000 | – | – | 92,000 |
| Jennifer A. Baird Director | Jul 10, 2025 | Award | +4,000 | – | – | 32,000 |
| Eric Schlorff Chief Executive Officer, Director | Jul 1, 2025 | Option exercise | +21,667 | – | – | 98,517 |
| Kevin Chung Chief Medical Officer | Jul 1, 2025 | Option exercise | +5,000 | – | – | 48,184 |
| Jennifer A. Baird Director | Jun 30, 2025 | Buy | +10,000 | $0.42 | $4.20K | 28,000 |
| John Neuman Director | Jun 24, 2025 | Buy | +40,000 | $0.36 | $14.40K | 80,000 |
| Bernadette N. Vincent Director | Jun 4, 2025 | Option exercise | +2,667 | – | – | 8,000 |
| Heel Kenneth Van Director | Jun 4, 2025 | Option exercise | +4,000 | – | – | 10,400 |
| John Neuman Director | Jun 4, 2025 | Option exercise | +2,667 | – | – | 88,000 |
| Jennifer A. Baird Director | Jun 4, 2025 | Option exercise | +2,667 | – | – | 18,000 |
| Jennifer A. Baird Director | May 20, 2025 | Buy | +10,000 | $1.28 | $12.80K | 10,000 |
| Kevin Chung Chief Medical Officer | May 20, 2025 | Buy | +4,500 | $1.25 | $5.63K | 18,185 |
| John Neuman Director | Dec 11, 2024 | Buy | +10,000 | $2.04 | $20.40K | 40,000 |
| Kevin Chung Chief Medical Officer | Nov 18, 2024 | Buy | +4,250 | $1.99 | $8.46K | 13,685 |
| Kevin Chung Chief Medical Officer | Sep 30, 2024 | Buy | +1,000 | $4.26 | $4.26K | 9,435 |
| David A. Green Chief Financial Officer | Aug 30, 2024 | Award | +8,100 | – | – | 10,323 |
| John Neuman Director | Aug 15, 2024 | Buy | +10,000 | $5.24 | $52.40K | 30,000 |
| John Neuman Director | Jun 17, 2024 | Buy | +10,000 | $4.35 | $43.50K | 20,000 |
| John Neuman Director | Jun 14, 2024 | Buy | +10,000 | $3.69 | $36.90K | 10,000 |
| David A. Green Chief Financial Officer | Apr 18, 2024 | Award | +2,223 | – | – | 2,223 |
| Allan Collins Director | Apr 12, 2024 | Award | +37,943 | – | – | 54,343 |
| Bruce M. Rodgers Director | Apr 12, 2024 | Award | +36,537 | – | – | 44,515 |
| Heel Kenneth Van Director | Apr 12, 2024 | Award | +43,564 | – | – | 159,964 |
| Andres Lobo Director | Apr 12, 2024 | Award | +32,322 | – | – | 40,300 |
| Rick Barnett Director | Apr 12, 2024 | Award | +70,264 | – | – | 86,664 |
| David A. Green Chief Financial Officer | Apr 12, 2024 | Award | +752,500 | – | – | 752,500 |
| Richard D. Russell Director | Apr 12, 2024 | Award | +32,322 | – | – | 60,300 |
| Kevin Chung Chief Medical Officer | Nov 29, 2023 | Award | +63,422 | – | – | 210,860 |
| Eric Schlorff Chief Executive Officer, Director | Nov 29, 2023 | Award | +60,248 | – | – | 837,823 |
| Caryl Baron Interim CFO | Nov 29, 2023 | Award | +20,293 | – | – | 139,872 |
| Heel Kenneth Van Director | Nov 22, 2023 | Buy | +100,000 | $0.40 | $40.00K | 116,400 |
| Caryl Baron Interim CFO | Sep 22, 2023 | Other | +15,070 | – | – | 119,579 |
| Caryl Baron Interim CFO | Sep 15, 2023 | Award | +4,110 | – | – | 104,506 |
| Eric Schlorff Chief Executive Officer, Director | Sep 15, 2023 | Award | +41,109 | – | – | 779,862 |
| Kevin Chung Chief Medical Officer | Sep 15, 2023 | Award | +34,257 | – | – | 154,490 |
| Kevin Chung Chief Medical Officer | Aug 31, 2023 | Award | +28,125 | – | – | 113,181 |
| Eric Schlorff Chief Executive Officer, Director | Aug 31, 2023 | Award | +33,750 | – | – | 736,466 |
| Kevin Chung Chief Medical Officer | Aug 31, 2023 | Award | +35,178 | – | – | 120,233 |
| Eric Schlorff Chief Executive Officer, Director | Aug 31, 2023 | Award | +35,178 | – | – | 738,753 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.