$ADGM

$0.10 -$0.01 (5.75%) Close

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

Ownership

13F as of Q2 2026 · 22.2M shares outstanding

Who owns ADGM?

By type of holder

Institutions 67.9% Insiders 32.1% Everyone else 0.0%

Concentration Top 10 holders own 67.5%

Perceptive Advisors LLC 44.5% · Sio Capital Management, LLC 3.2%

Institutional ownership

67.9%

-2.6 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

−586.0K

by institutions in Q2 2026

New / sold out

4 / 3

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Vanguard Capital Management LLC +69.3K
Citadel Advisors LLC NEW +16.2K

Biggest sellers in Q2 2026

Sio Capital Management, LLC −589.5K
Geode Capital Management, LLC −46.1K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Adagio Medical Holdings Inc in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Adagio Medical Holdings Inc.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years76% Under 1 year24%

Quarterly turnover

2.7%

of institutional shares changed hands

Top 10 managers, median time held

1.3 years

Super Investors

Investment managers reporting ADGM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
PA Perceptive Advisors LLC	9.9M	44.47%	+10 (+0.0%)	2024	0.1%
Shares held by quarter Peak holding9.9M (Q2'26) Change over 8 quarters+64.2K Share of the company44.470% Perceptive Advisors LLC's full portfolio →
SC Sio Capital Management, LLC	699.0K	3.15%	−589.5K (−45.8%)	Q4 '25	0.1%
Shares held by quarter Peak holding1.3M (Q4'25) Change over 8 quarters+699.0K Share of the company3.150% Sio Capital Management, LLC's full portfolio →

Perceptive Advisors LLC

9.9M

% of company

44.47%

Change vs last qtr

+10 (+0.0%)

Held since

2024

Sio Capital Management, LLC

699.0K

% of company

3.15%

Change vs last qtr

−589.5K (−45.8%)

Held since

Q4 '25

25 more super investors behind a free account

See every manager holding Adagio Medical Holdings Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ADGM on Form N-PORT; together they hold 3.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
FN Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust	$304K	575.9K	2.59%	0.00%	August 31, 2026
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$59.6K	91.5K	0.41%	0.00%	June 30, 2026

Fidelity Nasdaq Composite Index Fund

Fidelity Concord Street Trust

Position value

$304K

% of company

2.59%

% of the fund

0.00%

As of

August 31, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$59.6K

% of company

0.41%

% of the fund

0.00%

As of

June 30, 2026

4 more funds behind a free account

See every fund holding Adagio Medical Holdings Inc 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
UT Usen Todd Insider	207.3K	0.93%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.930% Usen Todd's insider activity →
KD Kaster Deborah Insider	15.0K	0.07%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.070% Kaster Deborah's insider activity →

Usen Todd

Insider

207.3K

% of company

0.93%

Change vs last qtr

—

Held since

—

Kaster Deborah

Insider

15.0K

% of company

0.07%

Change vs last qtr

—

Held since

—

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