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SeaStar Medical Ownership | Who Owns SeaStar Medical?

OverviewRevenueFinancialsChartTranscripts

SeaStar Medical Ownership Summary

SeaStar Medical is owned by 2.65% institutional investors, 2.58% insiders, and 94.77% retail investors. Vanguard group is the largest institutional shareholder, holding 1.43% of ICU shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.71% of its assets in SeaStar Medical shares.

ICU Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockSeaStar Medical2.65%2.58%94.77%
SectorHealthcare Stocks 232.86%10.65%-143.51%
IndustryBiotech Stocks 382.13%10.41%-292.54%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Vanguard group377.38K1.43%$90.57K
Jane street group126.95K0.48%$30.47K
Goldman sachs group23.20K0.09%$5.57K
Great valley advisor group10.00K0.04%$2.00K
Blackrock funding, inc. /de9.13K0.03%$2.19K
Morgan stanley200.000.00%$48.00
Td waterhouse canada216.000.00%$50.00
Xtx topco48.56K0.00%$27.68K
Toronto dominion bank25.00K0.00%$14.25K
Raymond james financial17.71K0.00%$10.10K

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Xtx topco48.56K0.00%$27.68K
Highmark wealth management---
Advisor group2.30K-$1.42K
Td waterhouse canada216.00-$50.00
Soa wealth advisors, llc.---
Tyche wealth partners---
Tower research capital llc (trc)132.00-$75.00
Jane street group126.95K-$30.47K
Great valley advisor group10.00K-$2.00K
Whittier trust---

Top Buyers

HolderShares% AssetsChange
Jane street group126.95K-126.95K
Toronto dominion bank25.00K-25.00K
Goldman sachs group23.20K-4.22K
Newedge advisors1.75K-1.48K
Great valley advisor group10.00K--

Top Sellers

HolderShares% AssetsChange
Armistice capital---613.24K
Geode capital management---258.92K
Trinity financial advisors---75.00K
Virtu financial---37.83K
Dynamic advisor solutions---29.28K

New Positions

HolderShares% AssetsChangeValue
Jane street group126.95K-126.95K$30.47K
Toronto dominion bank25.00K-25.00K$14.25K

Sold Out

HolderChange
Highmark wealth management-20.00
Soa wealth advisors, llc.-55.00
Game plan financial advisors-100.00
Sbi securities-148.00
Ronald blue trust-888.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 202513-50.00%699,748-36.02%22831221.65%4-66.67%1-80.00%
Sep 30, 2025258.70%1,091,983133.10%-56853.66%1157.14%5150.00%
Jun 30, 202525-481,330-46.67%55.09%8-38.46%3-
Mar 31, 20252531.58%902,474397.94%1077.17%138.33%3200.00%
Dec 31, 20241926.67%181,24232.71%332.99%12100.00%1-66.67%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Total Stock Mkt Idx Inv76.41K1.71%-
Fidelity Extended Market Index38.68K0.97%16.44K
Vanguard Institutional Extnd Mkt Idx Tr28.79K0.72%4.91K
Abante Quant Value FI11.36K0.28%-16.42K
BlackRock Extended Equity Market K7.69K0.18%-3.00
NT Ext Equity Mkt Idx Fd - L6.49K0.16%-
Northern Trust Extended Eq Market Idx6.49K0.16%5.56K
Spartan Extended Market Index Pool F6.15K0.15%97.00
Fidelity Series Total Market Index5.81K0.15%1.84K
NT Ext Eq Mkt Indx Fd DC Lending Tier 52.56K0.06%18.00

Recent Insider Transactions

DateNameRoleActivityValue
Dec 19, 2025Baird Jennifer A-Buy$987.42
Dec 09, 2025Messinger Michael Chief Financial OfficerBuy$5.10K
Aug 26, 2025Van Heel Kenneth-Buy$22.25K
Aug 27, 2025Van Heel Kenneth-Buy$8.56K
Aug 22, 2025Chung Kevin Chief Medical OfficerBuy$8.00K

Insider Transactions Trends

DateBuySell
2025 Q41-
2025 Q33-
2025 Q24-
2024 Q42-
2024 Q31-

ICU Ownership FAQ

Who Owns SeaStar Medical?

SeaStar Medical shareholders are primarily institutional investors at 2.65%, followed by 2.58% insiders and 94.77% retail investors. The average institutional ownership in SeaStar Medical's industry, Biotech Stocks , is 382.13%, which SeaStar Medical falls below.

Who owns the most shares of SeaStar Medical?

SeaStar Medical’s largest shareholders are Vanguard group (377.38K shares, 1.43%), Jane street group (126.95K shares, 0.48%), and Goldman sachs group (23.2K shares, 0.09%). Together, they hold 2.00% of SeaStar Medical’s total shares outstanding.

Does Blackrock own SeaStar Medical?

BlackRock is not among the top 10 institutional shareholders of SeaStar Medical.

Who is SeaStar Medical’s biggest shareholder by percentage of total assets invested?

Xtx topco is SeaStar Medical’s biggest shareholder by percentage of total assets invested, with 0.00% of its assets in 48.56K SeaStar Medical shares, valued at 27.68K$.

Who is the top mutual fund holder of SeaStar Medical shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of SeaStar Medical shares, with 1.71% of its total shares outstanding invested in 76.41K SeaStar Medical shares.

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