United States · 
Who invested in SeaStar Medical?
SeaStar Medical's investors include National Heart, Lung and Blood Institute.
United States · Funded startup
Who invested in SeaStar Medical
Funding summaryUpdated 26 Oct 2026
$4.4Mraised across 1 round since 2025, from 1 source
- Latest round
- Round, $4.4MJul 2025
- Investors
- 1
The rounds
- Jul 2025
Founders and team
From SeaStar Medical's own website and the SEC filings it signed: 4 on the team.
Also claim to have backed them
This firm lists SeaStar Medical as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about SeaStar Medical
How much has SeaStar Medical raised?
SeaStar Medical has raised $4.4M across 1 round since 2025.
When did SeaStar Medical last raise?
SeaStar Medical's most recent round was an Undisclosed round of $4.4M in Jul 2025.
What was SeaStar Medical's biggest round?
Its most recent round, $4.4M in Jul 2025, is also its largest on record.
Who backed SeaStar Medical first?
SeaStar Medical's first round on record, in Jul 2025, was backed by National Heart, Lung and Blood Institute.
What stage is SeaStar Medical at?
SeaStar Medical's latest named round is an Undisclosed round, in Jul 2025.
Where is SeaStar Medical based?
SeaStar Medical is based in the United States.
Companies like SeaStar Medical
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.