AMLX: Amylyx Pharmaceuticals 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 1 sales totaling $831K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-05 | Milne George M Jr | Director | $831K | yes |
Institutional ownership (Q2 2026)
206 institutions reported holding $2.06B of Amylyx Pharmaceuticals Inc on Form 13F (171 the quarter before). 47 opened a new position and 13 sold out. Shares held by institutions: +1%.
| Largest holders | Shares | Value |
|---|---|---|
| FMR LLC | 16,727,909 | $300.43M |
| BlackRock, Inc. | 8,827,085 | $158.53M |
| PERCEPTIVE ADVISORS LLC | 8,334,882 | $149.69M |
| TCG Crossover Management, LLC | 6,243,812 | $112.14M |
| Commodore Capital LP | 5,650,000 | $101.47M |
| Jupiter Topco LLC | 5,236,102 | $94.01M |
| Saturn V Capital Management LP | 4,624,101 | $83.05M |
| VANGUARD CAPITAL MANAGEMENT LLC | 4,224,224 | $75.87M |
| MORGAN STANLEY | 3,130,808 | $56.23M |
| Driehaus Capital Management LLC | 3,036,970 | $54.54M |
Get new insider and activist filings the morning after: daily alerts. Not investment advice.