SeaStar Medical Holding Corp - COM NEW (ICU)

CUSIP: 81256L302

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class
Equity / COM NEW
Total 13F shares
131,570
Total 13F value
$489,437
Share change
+88,719
SEC-reported price per share
$3.72
Number of holders
17
Value change
+$330,034
Number of buys
12
Number of sells
2

Security key

81256L302

Report period

Q1 2026

Institutions

17

Top holders

10

ICU full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Previous quarter: Q4 2025 SeaStar Medical Holding Corp SEC filings SeaStar Medical Holding Corp company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of ICU - SeaStar Medical Holding Corp - COM NEW (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
INTRACOASTAL CAPITAL, LLC
Disclosed value leader
ARMISTICE CAPITAL, LLC
Comparable rows
15/15
Latest evidence
31 Mar 2026
13D/G 3/4/5 13F Lead comparable stake: 10% 13D/G row: INTRACOASTAL CAPITAL, LLC Showing 1-6 of 15 holder rows.

Quick read

INTRACOASTAL CAPITAL, LLC leads the comparable SEC ownership view at 10%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens INTRACOASTAL CAPITAL, LLC's linked filing trail.
Comparable ownership Top 5
INTRACOASTAL CAPITAL, LLC 10%
Ayrton Capital LLC 6.5%
ARMISTICE CAPITAL, LLC 5%
Bradford K. Towne 0.2%
VANGUARD GROUP INC 8.5%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
INTRACOASTAL CAPITAL, LLC
13D/G
Mitchell P. Kopin
13D/G
10%
$106,381
443,253 shares
 -$848,979 31 Mar 2026
Ayrton Capital LLC
13D/G
13D/G
6.5%
$66,825
278,436 shares
 -$3,822 31 Mar 2026
ARMISTICE CAPITAL, LLC
13D/G
13D/G
5%
$864,997
1,466,096 shares
 +$263,221 30 Jun 2025
Bradford K. Towne
3/4/5
Principal Accounting Officer
3/4/5
0.2%
$2,172
9,050 shares
 — 06 Feb 2026
VANGUARD GROUP INC
13F
Company
13F
8.5%
$90,570
377,377 shares
 — 31 Dec 2025
JANE STREET GROUP, LLC
13F
Company
13F
2.9%
$30,468
126,948 shares
 — 31 Dec 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
17
Shares
131,570
Rows available
17
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders
2
Q1 2026 holders
17
Holder diff
15
Investor Q4 2025 Shares Q1 2026 Shares Share Diff Share Chg % Q4 2025 value Q1 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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