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SeaStar Medical Holding Corp Stock: price and insider trades · United States
1 insider bought €2,117 of shares over the last 90 days, the latest by Messinger Michael, filed 19 Aug 2026.
SeaStar Medical Holding Corp: what insiders have been doing
SeaStar Medical Holding Corp belongs to the Health Care sector. Filings by its managers are published through SEC (Form 4). Over the twelve months to 22 October 2026, 11 filings were filed, from 8 insiders.
Only purchases show up on the open market, 3 purchases in all worth €7,338, filed by 2 insiders. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. One trade stands out by size: a purchase of €4,379 from Messinger Michael, disclosed on 11 December 2025. On the buying side, the filings list 1 finance chief and 1 senior executive among the declarants.
In the case of 1 purchase, another manager of the company was buying within the same 30 days. Purchases made close together by different insiders form what is called a cluster. The last insider purchase was made public on 19 August 2026, 69 days ago. The median gap between a trade and its publication by SEC (Form 4) is 4 days. Section 16 rules allow two business days to file each Form 4.
With 11 filings in twelve months, the company is quieter than the median of 24 filings across the 3,171 companies we follow on the same exchange. Our records for SeaStar Medical Holding Corp go back to 2022, with 26 purchases and no sales on the open market in total. On the fundamentals side, the SEC filing (10-K) for the period ending 31 December 2025 lists revenue at 1.2 m USD and net income at -12.2 m USD.
These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.
Insider Decl.
90
Thresholds
n/a
Buy Volume
€289,565
26 ops. · all time
Sell Volume
n/a
n/a
Who traded when
BuySaleJennifer A. Baird3 buys
Kevin Chung3 buys
John Neuman2 buys
Kenneth Van Heel2 buys
Michael Messinger2 buys
Since the insiders bought
- -8.7%Entry US$3.34 · Close 20 Oct 2026 US$3.05
- +29.8%Entry US$2.35 · Close 20 Oct 2026 US$3.05
- -65.8%Entry US$9.16 · Close at T+365 US$3.13
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Financial data
as of FY 2025FY ended December 2025 · cache
US$3.11
Analyst consensus
2 analysts2.00/5
US$8.00Target US$10.00(+222%)US$12.00
Income statement
RevenueUS$1.2M
Gross profitUS$1.2M96% margin
EBITDA-US$12.1M-982% margin
Net income-US$12.2M-984.6% margin
Valuation
P/Book3.1x
Beta-1.07
Balance sheet & cash
Market capUS$16.4M
Total debtUS$525k
Free Cash Flow-US$13.6M
Debt / Equity3%
Profitability & ownership
ROE-356.9%
ROA-102.7%
% insiders11.6%
% institutions7.6%
Last declaration on 19 August 2026
Declarations90 total
750 shares@ US$3.270.016% mcap32.6% of flowCommon Stock, par value $0.0001SEC:0001437749-26-028540:0
Canonical exit: 16 Nov 2026 (T+90)
4,000 sharesCommon Stock, par value $0.0001SEC:0001437749-26-022559:0
3,000 shares0Common Stock, par value $0.0001SEC:0001437749-26-003674:0
3,000 shares0Common Stock, par value $0.0001SEC:0001437749-26-003673:0
3,000 shares0Common Stock, par value $0.0001SEC:0001437749-26-003671:0
7,500 shares0Common Stock, par value $0.0001SEC:0001437749-26-003670:0
15,000 shares0Common Stock, par value $0.0001SEC:0001437749-26-003669:0
30,000 shares0Common Stock, par value $0.0001SEC:0001437749-26-003668:0
3,000 shares0Common Stock, par value $0.0001SEC:0001437749-26-003672:0
4,200 shares@ US$0.23516.9% of flowCommon StockSEC:0001437749-25-038577:0
Canonical exit: 19 Mar 2026 (T+90)
14,500 shares@ US$0.351667.4% of flowCommon StockSEC:0001437749-25-037589:0
Canonical exit: 9 Mar 2026 (T+90)
10,000 shares@ US$0.856511.7% of flowCommon Stock, par value $0.0001 per shareSEC:0001214659-25-013006:1
Canonical exit: 25 Nov 2025 (T+90)
25,000 shares@ US$0.889934.3% of flowCommon Stock, par value $0.0001 per shareSEC:0001214659-25-013006:0
Canonical exit: 24 Nov 2025 (T+90)
10,000 shares@ US$0.8022.3% of flowCommon Stock, par value $0.0001 per shareSEC:0001213900-25-080440:0
Canonical exit: 20 Nov 2025 (T+90)
4,000 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064802:1
4,000 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064804:1
4,000 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064805:1
4,000 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064806:0
2,667 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064805:0
2,667 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064804:0
4,000 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-064802:0
5,000 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-061522:0
21,667 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-061521:0
10,000 shares@ US$0.417422.5% of flowCommon Stock, par value $0.0001 per shareSEC:0001213900-25-061153:1
Canonical exit: 28 Sept 2025 (T+90)
2,667 shares0Common Stock, par value $0.0001 per shareSEC:0001213900-25-061153:0
25 of 90 declarations
About SeaStar Medical Holding Corp
SeaStar Medical Holding Corp is a company focused on developing treatments for kidney diseases. It is listed on the NASDAQ under the symbol SEAM.
