ALT: Altimmune Inc insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Institutional ownership (Q2 2026)
210 institutions reported holding $459.10M of Altimmune Inc on Form 13F (173 the quarter before). 58 opened a new position and 18 sold out. Shares held by institutions: +118%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 20,385,284 | $61.97M |
| Deep Track Capital, LP | 19,250,000 | $58.52M |
| STATE STREET CORP | 12,098,540 | $36.78M |
| TCG Crossover Management, LLC | 10,000,000 | $30.40M |
| VANGUARD CAPITAL MANAGEMENT LLC | 8,177,752 | $24.86M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7,330,265 | $22.28M |
| MARSHALL WACE, LLP | 6,841,055 | $20.80M |
| VIKING GLOBAL INVESTORS LP | 6,700,000 | $20.37M |
| RA CAPITAL MANAGEMENT, L.P. | 6,500,000 | $19.76M |
| GEODE CAPITAL MANAGEMENT, LLC | 5,011,314 | $15.24M |
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