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SeaStar Medical (ICU) Stock Chart & Stock Price History

SeaStar Medical logo
$3.54 +0.04 (+1.14%)
Closing price 09/18/2026 04:00 PM Eastern
Extended Trading
$3.49 -0.05 (-1.47%)
As of 09/18/2026 07:56 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

SeaStar Medical Stock Price Performance

The SeaStar Medical (ICU) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 60.74%, with a year-to-date return of 47.50%. In the past month, the stock has increased 8.26%, reflecting recent market activity.

As of the latest close, SeaStar Medical traded at $3.54 with a market cap of $15.60 million and volume of 77,763 shares.

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5 Day
Performance
+15.31%
1 Month
Performance
+8.26%
3 Month
Performance
+13.46%
Year-To-Date
Performance
+47.50%
1 Year
Performance
-60.74%

ICU Stock Chart for Saturday, September, 19, 2026

SeaStar Medical Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
09/18/2026$3.50$3.54
+1.14%
$3.68$3.4377,763 shs$15.60 million
09/17/2026$3.08$3.50
+13.64%
$3.50$2.9177,847 shs$15.44 million
09/16/2026$3.02$3.08
+1.99%
$3.11$2.9814,085 shs$13.58 million
09/15/2026$3.07$3.02
-1.63%
$3.05$2.9229,071 shs$13.31 million
09/14/2026$3.03$3.07
+1.32%
$3.08$3.0311,203 shs$13.54 million
09/11/2026$3.13$3.03
-3.19%
$3.16$2.9744,974 shs$13.36 million
09/10/2026$3.10$3.13
+0.97%
$3.34$3.0966,897 shs$13.80 million
09/09/2026$2.95$3.10
+5.08%
$3.20$3.0262,334 shs$13.66 million
09/08/2026$2.98$2.95
-1.01%
$3.03$2.8926,430 shs$13.01 million
09/07/2026$2.98$2.98$3.01$2.8425,519 shs$13.14 million
09/04/2026$2.91$2.98
+2.41%
$3.01$2.8425,519 shs$13.14 million
09/03/2026$2.88$2.91
+1.04%
$3.02$2.8625,755 shs$12.82 million
09/02/2026$2.99$2.88
-3.68%
$3.03$2.8785,377 shs$12.70 million
09/01/2026$3.13$2.99
-4.47%
$3.14$2.9667,899 shs$13.19 million
08/31/2026$3.09$3.13
+1.29%
$3.17$3.0533,585 shs$13.79 million
08/28/2026$3.10$3.09
-0.32%
$3.16$3.0318,291 shs$13.62 million
08/27/2026$3.12$3.10
-0.64%
$3.19$3.0351,632 shs$13.67 million
08/26/2026$3.18$3.12
-1.89%
$3.24$3.0856,680 shs$13.76 million
08/25/2026$3.19$3.18
-0.31%
$3.29$3.1249,155 shs$14.01 million
08/24/2026$3.35$3.19
-4.78%
$3.41$3.1955,938 shs$14.07 million
08/21/2026$3.34$3.35
+0.30%
$3.50$3.2768,738 shs$14.77 million
08/20/2026$3.27$3.34
+2.14%
$3.43$3.2055,966 shs$14.73 million
08/19/2026$3.34$3.27
-2.10%
$3.43$3.2765,501 shs$14.41 million
08/18/2026$3.25$3.34
+2.77%
$3.34$3.2030,467 shs$14.73 million

This page (NASDAQ:ICU) was last updated on 9/18/2026 by MarketBeat.com Staff.
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