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ICU · Seastar Medical Holding Corp
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LIVE
TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475
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ICU

SeaStar Medical Holding Corp
MEDICAL DEVICES · SURGICAL & MEDICAL INSTRUMENTS & APPARATUS · CIK 0001831868
C-SUITE BUYING · 1☆ WATCH
INSIDER NET · 180D
$2.5K
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
1
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
11
13F, latest reported quarter
REVENUE GROWTH
+814.1%
XBRL, annual
NET MARGIN
-984.6%
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net +$2.5K over 180 days
+$2.5K over 90 days
more than 70% of Medical Devices
CONGRESS
no member of Congress has reported trading it
FUNDS
11 funds added or opened last quarter
below 84% of Medical Devices
REVENUE
+814.1% year over year
more than 99% of Medical Devices
MARGIN
-984.6% net margin
below 97% of Medical Devices
BUYBACKS
no share repurchases reported
SHORT
2.1% of shares outstanding short · 1.5 days to cover · settled 2026-07-31
below 61% of Medical Devices
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN -67.5%
-67.5%12M
-76%-39%-2%+35%2025-092025-102025-122026-032026-052026-072026-09 2025-12-09 · Messinger Michael bought $5.1K2026-08-18 · Messinger Michael bought $2.5K2025-12-19 · Baird Jennifer A bought $1.0K
INSIDER BUY
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders are net buyers of their own stock.
The record shows a net $2.5K bought by insiders over 180 days, 11 funds added last quarter. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
TMOPENROKBLFSMTDSIBNWRBYISRGTXGDXCMEWTMDX
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, SeaStar Medical Holding Corp insiders bought a net $2.5K of stock across 26 Form 4 purchases and sales, with 1 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER
FILED
SHARES
VALUE
Messinger Michael
Chief Financial Officer
BUY
2026-08-18
750.0
$2.5K
Baird Jennifer A
Director
BUY
2025-12-19
4,200.0
$1.0K
Messinger Michael
Chief Financial Officer
BUY
2025-12-09
14,500.0
$5.1K
Van Heel Kenneth
Director
BUY
2025-08-27
10,000.0
$8.6K
Van Heel Kenneth
Director
BUY
2025-08-26
25,000.0
$22.2K
26 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 21 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
BOOTHBAY FUND MANAGEMENT, LLC
245,200.0 sh
$899.9K
GEODE CAPITAL MANAGEMENT, LLC
49,593.0 sh
$182.0K
VANGUARD CAPITAL MANAGEMENT LLC
33,091.0 sh
$121.4K
UBS Group AG
32,199.0 sh
$115.2K
VANGUARD FIDUCIARY TRUST CO
13,692.0 sh
$50.2K
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
FORM 144
No planned-sale notices
No insider has notified an intent to sell. This is the panel to watch after a run-up.
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Fidelity Extended Market Index Fund
$61.4K POSITION · AS OF 2026-02-28
0.0%
VANGUARD EXTENDED MARKET INDEX FUND
$88.8K POSITION · AS OF 2026-03-31
0.0%
Fidelity Series Total Market Index Fund
$11.0K POSITION · AS OF 2026-02-28
0.0%
Fidelity Nasdaq Composite Index Fund
$1.2K POSITION · AS OF 2026-02-28
0.0%
Fidelity Total Market Index Fund
$6.1K POSITION · AS OF 2026-02-28
0.0%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$1.2M$135.0K$0—
GROSS PROFIT$1.2M$135.0K$0—
OPERATING INCOME$-12.2M$-17.8M$-14.2M$-11.6M
NET INCOME$-12.2M$-24.8M$-26.2M$-12.2M
EPS (DILUTED)—-6.63-30.26-1.48
OPERATING CASH FLOW$-13.6M$-16.0M$-10.3M$-7.8M
LONG-TERM DEBT——$4.1M$7.7M
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

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© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-06 ALL SYSTEMS LIVE FOR MACHINES →