$ICU

$2.52 +$0.05 (2.02%) Close

$ICU Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 4.4M shares outstanding

Who owns ICU?

By type of holder

Institutions 3.6% Insiders 0.1% Everyone else 96.3%

Concentration Top 10 holders own 3.7%

Geode Capital Management, LLC 1.1% · Vanguard Capital Management LLC 0.8%

Institutional ownership

3.6%

+0.6 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+27.0K

by institutions in Q2 2026

New / sold out

3 / 2

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

UBS Group AG +30.6K
Northern Trust Corp NEW +10.4K

Biggest sellers in Q2 2026

Jane Street Group, LLC −15.3K
Geode Capital Management, LLC −6.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for SeaStar Medical Holding Corp in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2023–FY2024

+331.9%

+331.88% a year

Each share's claim on the business

−76.8%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $2.82M

over 2 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years53% Under 1 year47%

Quarterly turnover

26.6%

of institutional shares changed hands

Top 10 managers, median time held

1.8 years

Super Investors

Investment managers reporting ICU on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
GC Geode Capital Management, LLC	49.6K	1.13%	−6.0K (−10.9%)	Q1 '26	0.0%
Shares held by quarter Peak holding258.9K (Q3'25) Change over 8 quarters+9.8K Share of the company1.130% Geode Capital Management, LLC's full portfolio →
VC Vanguard Capital Management LLC	33.1K	0.75%	+4.3K (+14.9%)	2024	0.0%
Shares held by quarter Peak holding33.1K (Q2'26) Change over 8 quarters+33.1K Share of the company0.750% Vanguard Capital Management LLC's full portfolio →

Geode Capital Management, LLC

49.6K

% of company

1.13%

Change vs last qtr

−6.0K (−10.9%)

Held since

Q1 '26

Vanguard Capital Management LLC

33.1K

% of company

0.75%

Change vs last qtr

+4.3K (+14.9%)

Held since

2024

18 more super investors behind a free account

See every manager holding SeaStar Medical Holding Corp, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ICU on Form N-PORT; together they hold 1.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$121K	33.1K	0.75%	0.00%	June 30, 2026
FE Fidelity Extended Market Index Fund Fidelity Concord Street Trust	$64.2K	20.6K	0.47%	0.00%	August 31, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$121K

% of company

0.75%

% of the fund

0.00%

As of

June 30, 2026

Fidelity Extended Market Index Fund

Fidelity Concord Street Trust

Position value

$64.2K

% of company

0.47%

% of the fund

0.00%

As of

August 31, 2026

5 more funds behind a free account

See every fund holding SeaStar Medical Holding Corp and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
BJ Baird Jennifer A Insider	4.0K	0.09%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.090% Baird Jennifer A's insider activity →
MM Messinger Michael Insider	1.9K	0.04%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.040% Messinger Michael's insider activity →

Baird Jennifer A

Insider

4.0K

% of company

0.09%

Change vs last qtr

—

Held since

—

Messinger Michael

Insider

1.9K

% of company

0.04%

Change vs last qtr

—

Held since

—

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