ICU

SeaStar Medical Holding Corp

Surgical & Medical Instruments & ApparatusNasdaq<br>Emerging growth company

Total Trades

22

Buys

18

Sells

0

Largest Trade

N/A

Insiders

8

Institutional Funds

15

Inst. Value

$50K–$100K

Activist Filings

8

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Baird Jennifer ADirectorBUY<$1K4K$0.24Dec 22, 2025
Messinger MichaelCFOBUY$1K–$15K15K$0.35Dec 11, 2025
Van Heel KennethDirectorBUY$15K–$50K35K$0.88Aug 28, 2025
Chung KevinChief Medical Offi…BUY$1K–$15K10K$0.80Aug 25, 2025
Baird Jennifer ADirectorEXERCISEN/A3KJul 2, 2025
Baird Jennifer ADirectorBUY$1K–$15K10K$0.42Jul 2, 2025
Neuman JohnDirectorBUY$1K–$15K40K$0.36Jun 27, 2025
Baird Jennifer ADirectorBUY$1K–$15K10K$1.28May 22, 2025
Chung KevinChief Medical Offi…BUY$1K–$15K5K$1.25May 20, 2025
Neuman JohnDirectorBUY$100K–$500K40K$3.83Feb 27, 2025
Chung KevinChief Medical Offi…BUY$1K–$15K4K$1.99Nov 19, 2024
Chung KevinChief Medical Offi…BUY$1K–$15K1K$4.26Oct 1, 2024
Van Heel KennethDirectorBUY$15K–$50K100K$0.40Nov 27, 2023
Chung KevinChief Medical Offi…BUY$1K–$15K13K$0.47Jun 1, 2023
Russell Richard D.DirectorBUY$1K–$15K20K$0.50May 30, 2023
Chung KevinChief Medical Offi…BUY$1K–$15K8K$0.70May 22, 2023
Chung KevinChief Medical Offi…BUY$1K–$15K4K$1.85Apr 7, 2023
Chung KevinChief Medical Offi…GRANTN/A44KApr 7, 2023
Union Carbide Employees' Pension Plan Trust10% OwnerBUYN/A200KNov 1, 2022
Union Carbide Employees' Pension Plan Trust10% OwnerGRANTN/A2.8MNov 1, 2022
Dow Employees' Pension Plan Trust10% OwnerGRANTN/A4.1MNov 1, 2022
Dow Employees' Pension Plan Trust10% OwnerBUYN/A300KNov 1, 2022
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Institutional Ownership

13F filings as of Dec 31, 2025 · 15 funds holding

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Armistice Capital, LLC

SC 13G/A · Aug 15, 2025

5.0%

1.5M shares

Ayrton Capital LLC

SC 13G/A · Aug 13, 2025

2.6%

294K shares

Armistice Capital, LLC

SC 13G · May 15, 2025

10.0%

1.0M shares

Ayrton Capital LLC

SC 13G/A · Feb 13, 2025

6.2%

294K shares

Ayrton Capital LLC

SC 13G · Nov 14, 2024

6.6%

294K shares

(S) Karpus Investment Management

SC 13G/A · Nov 10, 2022

1.2%

154K shares

(S) Karpus Investment Management

SC 13G/A · Feb 14, 2022

11.8%

1.5M shares

Saba Capital Management, L.P.

SC 13G/A · Feb 14, 2022

9.3%

973K shares

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