ADGM
Adagio Medical Holdings, Inc.
Surgical & Medical Instruments & ApparatusNasdaq<br>Emerging growth company
Total Trades
2
Buys
2
Sells
0
Largest Trade
$100K–$500K
Insiders
2
Institutional Funds
13
Inst. Value
$1M+
Activist Filings
11
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Kaster Deborah | CFO | BUY | $15K–$50K | 15K | $1.20 | Dec 18, 2025 |
| Usen Todd | CEO | BUY | $100K–$500K | 207K | $1.09 | Dec 16, 2025 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 13 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 9.9M | $1M+ | SH |
| Alyeska Investment Group, L.P. | 1.2M | $1M+ | SH |
| ADAR1 Capital Management, LLC | 1.2M | $1M+ | SH |
| ADAR1 Capital Management, LLC | 1.2M | $1M+ | SH |
| SILVERARC CAPITAL MANAGEMENT, LLC | 515K | $500K+ | SH |
| Hudson Bay Capital Management LP | 296K | $100K–$500K | SH |
| Shaolin Capital Management LLC | 171K | $100K–$500K | SH |
| Affinity Asset Advisors, LLC | 80K | $50K–$100K | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 62K | $50K–$100K | SH |
| VANGUARD GROUP INC | 26K | $15K–$50K | SH |
| TORONTO DOMINION BANK | 25K | $15K–$50K | SH |
| HRT FINANCIAL LP | 19K | $15K–$50K | SH |
| Crewe Advisors LLC | 500 | <$1K | SH |
| MORGAN STANLEY | 137 | <$1K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G · Feb 18, 2026
5.7%
1.2M shares
SC 13G · Feb 11, 2026
6.1%
1.3M shares
Adage Capital Management, L.P.
SC 13G/A · Nov 13, 2025
6.9%
1.1M shares
SC 13G/A · Aug 26, 2025
7.2%
1.2M shares
SC 13G/A · Aug 14, 2025
0.0%
0 shares
Adage Capital Management, L.P.
SC 13G · Aug 12, 2025
5.3%
821K shares
SC 13G/A · May 15, 2025
7.2%
1.2M shares
SC 13G/A · Feb 14, 2025
9.9%
1.6M shares
SC 13G/A · Feb 14, 2025
73.6%
15.3M shares
SC 13G · Nov 13, 2024
76.4%
15.3M shares
SC 13G · Aug 12, 2024
10.0%
1.3M shares