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SeaStar Medical (ICU) 10K Form and Latest SEC Filings 2026

SeaStar Medical logo
$3.89 -0.11 (-2.75%)
Closing price 04:00 PM Eastern
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$3.90 +0.01 (+0.28%)
As of 06:00 PM Eastern
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Latest SeaStar Medical SEC Filings & Recent Activity

SeaStar Medical (NASDAQ:ICU) has submitted 352+ documents to the U.S. Securities and Exchange Commission (SEC) since 2021. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. The most recent filing was a Form 424B3 submitted on May 13, 2026.

8-K
SeaStar Medical Files Current Report on Apr. 28, 2026

An 8-K is filed when a material corporate event occurs, such as an acquisition, leadership change, or financial update.

View filing

10-Q
SeaStar Medical Files Quarterly Report on May. 13, 2026

The 10-Q contains SeaStar Medical's unaudited quarterly financial statements, revenue, earnings updates, and cash flow changes between annual reports.

View earnings history

SeaStar Medical SEC Filing History

Browse SeaStar Medical's complete SEC filing history using the filters below. Filter by form type - 10-K, 10-Q, 8-K, Form 4, and more - or set a custom date range to find a filing.

DateFilerForm TypeView
05/13/2026 3:57 PM
SeaStar Medical (1831868) Filer
Form 424B3
05/13/2026 3:45 PM
SeaStar Medical (1831868) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
05/13/2026 3:21 PM
INTRACOASTAL CAPITAL, LLC (1646799) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G/A
05/11/2026 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
05/11/2026 4:52 PM
Ayrton Capital LLC (1698148) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G
05/07/2026 7:38 AM
SeaStar Medical (1831868) Filer
Form S-1/A
05/05/2026 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
05/05/2026 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
05/05/2026 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
04/28/2026 4:22 PM
SeaStar Medical (1831868) Filer
Form POS AM
04/28/2026 4:23 PM
SeaStar Medical (1831868) Filer
Form POS AM
04/28/2026 4:23 PM
SeaStar Medical (1831868) Filer
Form POS AM
04/28/2026 3:45 PM
SeaStar Medical (1831868) Filer
Form S-1
Registration statement under Securities Act of 1933  
04/28/2026 3:04 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/25/2026 3:45 PM
SeaStar Medical (1831868) Filer
Form 10-K
Annual report pursuant to Section 13 or 15(d)  
03/25/2026 3:10 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/13/2026 3:43 PM
INTRACOASTAL CAPITAL, LLC (1646799) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G/A
02/10/2026 3:54 PM
Schlorff Eric (1949738) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/10/2026 3:55 PM
Chung Kevin (1949950) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/10/2026 3:56 PM
SeaStar Medical (1831868) Issuer
Towne Bradford K (1728197) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/10/2026 3:57 PM
Baird Jennifer A (2047015) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/10/2026 3:57 PM
SeaStar Medical (1831868) Issuer
Vincent Bernadette N (2047074) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/10/2026 3:58 PM
Neuman John (2026279) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/10/2026 3:58 PM
SeaStar Medical (1831868) Issuer
Van Heel Kenneth (1613111) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
12/23/2025 3:44 PM
SeaStar Medical (1831868) Filer
Form 8-K/A
12/22/2025 5:55 PM
Baird Jennifer A (2047015) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
12/18/2025 3:22 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/11/2025 5:49 PM
Messinger Michael (1615039) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
12/08/2025 3:50 PM
Messinger Michael (1615039) Reporting
SeaStar Medical (1831868) Issuer
Form 3
Initial statement of beneficial ownership of securities  
11/20/2025 3:19 PM
SeaStar Medical (1831868) Filer
Form 424B5
11/17/2025 3:56 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/07/2025 4:25 PM
INTRACOASTAL CAPITAL, LLC (1646799) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G/A
11/04/2025 3:05 PM
SeaStar Medical (1831868) Filer
Form PRE 14A
10/14/2025 5:17 AM
SeaStar Medical (1831868) Filer
Form 424B5
09/29/2025 3:28 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/24/2025 4:00 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/09/2025 4:16 PM
SeaStar Medical (1831868) Issuer
Towne Bradford K (1728197) Reporting
Form 3
Initial statement of beneficial ownership of securities  
08/28/2025 4:28 PM
SeaStar Medical (1831868) Issuer
Van Heel Kenneth (1613111) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
08/25/2025 5:21 PM
Chung Kevin (1949950) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
08/14/2025 8:09 PM
ARMISTICE CAPITAL, LLC (1601086) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G/A
08/14/2025 8:07 AM
SeaStar Medical (1831868) Filer
Form 8-K/A
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08/13/2025 5:39 AM
Ayrton Capital LLC (1698148) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G/A
08/12/2025 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
08/08/2025 4:02 PM
SeaStar Medical (1831868) Filer
Form S-1
Registration statement under Securities Act of 1933  
08/01/2025 3:05 PM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/01/2025 8:11 AM
SeaStar Medical (1831868) Filer
Form 424B5
07/16/2025 6:45 PM
SeaStar Medical (1831868) Issuer
Van Heel Kenneth (1613111) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
07/16/2025 6:45 PM
SeaStar Medical (1831868) Issuer
Vincent Bernadette N (2047074) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
07/16/2025 6:45 PM
Neuman John (2026279) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/16/2025 6:47 PM
Baird Jennifer A (2047015) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/14/2025 5:24 AM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/11/2025 7:37 AM
SeaStar Medical (1831868) Filer
Form 424B5
07/10/2025 2:35 PM
SeaStar Medical (1831868) Filer
Form 424B5
07/08/2025 5:30 AM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/03/2025 3:33 PM
Schlorff Eric (1949738) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/03/2025 3:33 PM
Chung Kevin (1949950) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/02/2025 6:32 PM
Baird Jennifer A (2047015) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/27/2025 4:08 PM
INTRACOASTAL CAPITAL, LLC (1646799) Filed by
SeaStar Medical (1831868) Subject
Form SCHEDULE 13G
06/27/2025 5:00 AM
Neuman John (2026279) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/23/2025 8:17 AM
SeaStar Medical (1831868) Filer
Form 424B4
06/23/2025 6:16 AM
SeaStar Medical (1831868) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/22/2025 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
06/20/2025 5:44 AM
SeaStar Medical (1831868) Filer
Form S-1/A
06/16/2025 7:41 AM
SeaStar Medical (1831868) Filer
Form S-1
Registration statement under Securities Act of 1933  
05/29/2025 3:57 PM
SeaStar Medical (1831868) Filer
Form 424B3
05/27/2025 11:15 PM
SeaStar Medical (1831868) Filer
Form EFFECT
05/22/2025 4:40 PM
Baird Jennifer A (2047015) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/20/2025 6:07 PM
Chung Kevin (1949950) Reporting
SeaStar Medical (1831868) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
(Data available from 1/1/2016 forward)

SeaStar Medical SEC Filings - Frequently Asked Questions

SeaStar Medical (ICU) has submitted 352+ filings to the SEC since 2021. You can browse the complete history or filter by form type using the tools above.

SeaStar Medical's fiscal year ends on December 31. The company typically files its 10-K annual report by the end of February, covering the prior fiscal year's financial results.

The most recent filing was a Form 424B3 submitted on May 13, 2026. View the full filing using the link above.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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This page (NASDAQ:ICU) was last updated on 5/19/2026 by MarketBeat.com Staff.
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