Companies / Adagio Medical Holdings, Inc.
Adagio Medical Holdings, Inc.
Nasdaq: ADGMCIK 2006986LAGUNA HILLS, CA
Financials · FY2025
Ownership
22.2M shares outstanding · as of Aug 10, 2026
Ownership
| 10%+ / strategic | 15.24% | 3,385,245 |
| Institutions | 64.25% | 14,271,044 |
| Public float | 20.50% | 4,554,170 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 2
View all →| Insider | % of shares | Shares |
|---|---|---|
Kaster DeborahChief Financial Officer | — | — |
Usen ToddCEOChief Executive Officer · Director | — | — |
Institutional holders 23
View all →| Holder | Value | % of shares |
|---|---|---|
| $11.01M | 44.47% | |
| $1.45M | 5.67% | |
| $1.34M | 5.80% | |
| $1.21M | 5.22% | |
| $1.21M | 5.22% | |
| $536.0K | 2.32% | |
| $497.1K | 2.15% | |
| $308.2K | 1.33% | |
| $178.0K | 0.77% | |
| $144.0K | 0.56% |
Activity
Mar 31, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Hudson Bay Capital Management LP 13F manager | Exit | Common stock | $-308.2K | -296K -100.00% | 0 | low |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $65.4K | +57K +83.26% | 125,241 0.56% of shares | low |
| Q1 2026 as of | Renaissance Technologies LLC 13F manager | New | Common stock | $19.0K | +17K | 16,557 0.07% of shares | low |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Add | Common stock | $11.9K | +11K +39534.48% | 11,494 0.05% of shares | low |
| Q2 2025 as of | Barclays PLC 13F manager | Exit | Common stock | $-159 | -197 -100.00% | 0 | low |
| Q1 2025 as of | Barclays PLC 13F manager | New | Common stock | $159 | +197 | 197 <0.01% of shares | low |
| Q4 2025 as of | Barclays PLC 13F manager | Exit | Common stock | $-27 | -14 -100.00% | 0 | low |
| Q3 2025 as of | Barclays PLC 13F manager | New | Common stock | $27 | +14 | 14 <0.01% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Perceptive Advisors LLC | Passive13G/A | — |
| Alyeska Investment Group, L.P. | Passive13G | — |
| Sio Capital Management, LLC | Passive13G | — |
| ADAR1 Capital Management, LLC | Passive13G | — |
| Perceptive Advisors LLC | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| ADGM | — | 00534B100 |