NASDAQ · ICU

SeaStar Medical Holding Corp

Closing price · Nov 13, 2026 $0.8384
Last insider buy price $3.27 Paid by CFO Michael Messinger on Aug 18, 2026 (Form 4). Not today's price.

Latest quarter · ended Sep 30, 2026

Cash got weaker, but sales grew

descriptionFiled Nov 12, 2026
Revenue growthFaster
+247.0%
Quarter ended Sep 30, 2025: +169.1% sales vs. a year beforeQuarter ended Dec 31, 2025: +526.9% sales vs. a year beforeQuarter ended Mar 31, 2026: +68.9% sales vs. a year beforeQuarter ended Jun 30, 2026: +82.0% sales vs. a year beforeQuarter ended Sep 30, 2026: +247.0% sales vs. a year before
Sep '25Sep '26
$635K vs. $183K a year ago
Gross marginSteady
92.4%
Quarter ended Dec 31, 2024: 100.0% gross marginQuarter ended Mar 31, 2025: 100.0% gross marginQuarter ended Jun 30, 2025: 92.0% gross marginQuarter ended Sep 30, 2025: 92.3% gross marginQuarter ended Dec 31, 2025: 97.1% gross marginQuarter ended Mar 31, 2026: 90.7% gross marginQuarter ended Jun 30, 2026: 91.2% gross marginQuarter ended Sep 30, 2026: 92.4% gross margin
Dec '24Sep '26
vs. 92.3% a year ago
Cash from operationsBetter
−$3.37M
Quarter ended Dec 31, 2024: −$4.69M cash from operationsQuarter ended Mar 31, 2025: −$2.65M cash from operationsQuarter ended Jun 30, 2025: −$3.01M cash from operationsQuarter ended Sep 30, 2025: −$3.84M cash from operationsQuarter ended Dec 31, 2025: −$4.09M cash from operationsQuarter ended Mar 31, 2026: −$2.76M cash from operationsQuarter ended Jun 30, 2026: −$2.99M cash from operationsQuarter ended Sep 30, 2026: −$3.37M cash from operations
Dec '24Sep '26
vs. −$3.84M a year ago
Share countBuying back
−85.3%
Quarter ended Dec 31, 2024: 8.72M sharesQuarter ended Mar 31, 2025: 10.56M sharesQuarter ended Jun 30, 2025: 27.91M sharesQuarter ended Sep 30, 2025: 36.05M sharesQuarter ended Dec 31, 2025: 3.99M sharesQuarter ended Mar 31, 2026: 4M sharesQuarter ended Jun 30, 2026: 4.41M sharesQuarter ended Sep 30, 2026: 5.32M shares
Dec '24Sep '26
5.32M shares vs. 36.05M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Buying Insiders: as of Nov 13 Funds: as of Jun 30, 2026
−1000+100 +100
  • info
    No real insider sales in 12 months. Planned 10b5-1 sales and tax withholding are left out.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

19 funds report owning ICU, up from 16

Holdings as of Jun 30, 2026
New5
Added3
Held7
Trimmed4
Sold out2

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale
CEOCFOOther officersDirectorsDecJanFebMarAprMayJunJulAugSepOctNovStock grant · Feb 6 · 12,000 sh · 4 peopleStock grant · Feb 6 · 22,500 sh · 2 peopleStock grant · Feb 6 · 30,000 shStock grant · Jul 1 · 16,000 sh · 4 peopleStock grant · Jul 1 · 7,202 shStock grant · Jul 1 · 10,288 shOpen-market buy · Dec 9 · $5.08KOpen-market buy · Dec 19 · $1.01KOpen-market buy · Aug 18 · $2.45K
CEOCFOOther officersDirectorsJunJulAugSepOctNovStock grant · Jul 1 · 16,000 sh · 4 peopleStock grant · Jul 1 · 7,202 shStock grant · Jul 1 · 10,288 shOpen-market buy · Aug 18 · $2.45K

Last 6 months. A wider screen shows 12.

Showing 3 real trades. Hidden: 13 stock grants. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

Aug 18 Michael Messinger CFO Open-market buy $2.45K 750 sh at $3.27
Dec 19 Jennifer Baird Director Open-market buy $1.01K 4,200 sh at $0.24
Dec 9 Michael Messinger CFO Open-market buy $5.08K 14,500 sh at $0.35

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Top holders

Biggest funds in ICU

As of Jun 30, 2026
FundOwnsValueChange
Geode Capital Management, LLC0.9%$182K−11%
Vanguard Capital Management LLC0.6%$121K+15%
UBS Group AG0.6%$115K+3859%
Vanguard Fiduciary Trust Co0.3%$50.2KSame
Jane Street Group, LLC0.2%$46.4K−55%

"Owns" is shares reported divided by shares outstanding.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast