SEC 13F Intelligence

SEASTAR MEDICAL HOLDING CORP

CUSIP 81256L112

Seastar Medical Holding Corp has 10 institutional holders in Filings Flow’s 13F database, together reporting 967.3K shares worth $932,614 as of Q1 2026. The largest reported holders are Boothbay Fund Management, LLC, Atw Spac Management LLC, and Goldman Sachs Group Inc.

Institutional Holders
10
Q1 2026
Reported Value
$932,614
Ticker
unmapped
private placement or foreign
Quarters Tracked
3

Ownership Trend

Institutional holders
Q4 ’22: 30Q4 ’22Q4 ’25: 14Q4 ’25Q1 ’26: 10Q1 ’26filingsflow.com
Total reported value
Q4 ’22: $2MQ4 ’22Q4 ’25: $68,161Q4 ’25Q1 ’26: $932,614Q1 ’26filingsflow.com

Holders

Mixed quarters
Manager% of PortfolioValueSharesQuarter
BOOTHBAY FUND MANAGEMENT, LLC$7.7B AUM0.01%$912,144245.2KQ1 2026
EQUITEC PROPRIETARY MARKETS, LLC$187M AUM0.00%$1,02835.7KQ1 2026
Cruiser Capital Advisors, LLC$257M AUM0.00%$93532.5KQ1 2026
LINDEN ADVISORS LP$17.9B AUM0.00%$5,953218.1KQ1 2026
TWO SIGMA SECURITIES, LLC$861M AUM0.00%$13411.8KQ4 2025OLDER
TENOR CAPITAL MANAGEMENT Co., L.P.$6.5B AUM0.00%$1,15240.0KQ1 2026
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.$1.6B AUM0.00%$20718.3KQ4 2025OLDER
LMR Partners LLP$45.4B AUM0.00%$3,600125.0KQ1 2026
Clear Street Group Inc.$24.6B AUM0.00%$1,33946.5KQ1 2026
CLEAR STREET LLC$25.1B AUM0.00%$92946.7KQ2 2025OLDER
WOLVERINE ASSET MANAGEMENT LLC$10.4B AUM0.00%$35412.3KQ1 2026
GOLDMAN SACHS GROUP INC$870.9B AUM0.00%$6,088211.4KQ1 2026
MILLENNIUM MANAGEMENT LLC$240.3B AUM0.00%$64822.5KQ1 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP$893.3B AUM0.00%$85974.7KQ4 2025OLDER
TORONTO DOMINION BANK$69.7B AUM0.00%$5178Q3 2025OLDER
UBS Group AG$666.3B AUM0.00%$21717Q1 2026

Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.