8 insiders reported 61 Form 4 transactions for Amylyx Pharmaceuticals, Inc. (AMLX) over the past 18 months (most recent 2026-08-20). Recent activity: FRATES JAMES M (Chief Financial Officer) Buy 22,807 shares, Bedrosian Camille L (Chief Medical Officer) Buy 22,807 shares, Klee Justin B. (Co-Chief Executive Officer) Buy 60,039 shares, Cohen Joshua B (Co-Chief Executive Officer) Buy 60,039 shares, Mazzariello Gina (Chief Legal Officer) Buy 21,284 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | FRATES JAMES M | Chief Financial Officer | Buy | 22,807 | $0 |
| 2026-08-20 | Bedrosian Camille L | Chief Medical Officer | Buy | 22,807 | $0 |
| 2026-08-20 | Klee Justin B. | Co-Chief Executive Officer | Buy | 60,039 | $0 |
| 2026-08-20 | Cohen Joshua B | Co-Chief Executive Officer | Buy | 60,039 | $0 |
| 2026-08-20 | Mazzariello Gina | Chief Legal Officer | Buy | 21,284 | $0 |
| 2026-07-13 | Mazzariello Gina | Chief Legal Officer | Sell | 15,000 | $274,746 |
| 2026-07-13 | Mazzariello Gina | Chief Legal Officer | Sell | 15,000 | $264,122 |
| 2026-05-26 | Firestone Karen | Director | Buy | 3,800 | $51,338 |
| 2026-03-09 | Cohen Joshua B | Co-Chief Executive Officer | Buy | 248,865 | $0 |
| 2026-03-09 | Bedrosian Camille L | Chief Medical Officer | Buy | 95,990 | $0 |
| 2026-03-09 | Mazzariello Gina | Chief Legal Officer | Buy | 74,660 | $0 |
| 2026-03-09 | Klee Justin B. | Co-Chief Executive Officer | Buy | 248,865 | $0 |
| 2026-03-09 | FRATES JAMES M | Chief Financial Officer | Buy | 95,990 | $0 |
| 2026-03-04 | Mazzariello Gina | Chief Legal Officer | Sell | 6,844 | $99,375 |
| 2026-03-04 | Cohen Joshua B | Co-Chief Executive Officer | Sell | 29,282 | $424,003 |
| 2026-03-04 | Klee Justin B. | Co-Chief Executive Officer | Sell | 29,282 | $423,711 |
| 2026-03-04 | FRATES JAMES M | Chief Financial Officer | Sell | 7,909 | $114,839 |
| 2026-03-04 | Bedrosian Camille L | Chief Medical Officer | Sell | 6,461 | $94,201 |
| 2026-02-25 | Mazzariello Gina | Chief Legal Officer | Sell | 3,419 | $48,345 |
| 2026-02-04 | FRATES JAMES M | Chief Financial Officer | Sell | 3,557 | $52,110 |
| 2026-02-04 | Cohen Joshua B | Co-Chief Executive Officer | Sell | 15,500 | $227,540 |
| 2026-02-04 | Klee Justin B. | Co-Chief Executive Officer | Sell | 15,500 | $227,695 |
| 2026-02-04 | Mazzariello Gina | Chief Legal Officer | Sell | 3,448 | $50,513 |
| 2026-01-20 | Cohen Joshua B | Co-Chief Executive Officer | Buy | 197,182 | $1.5M |
| 2026-01-20 | Cohen Joshua B | Co-Chief Executive Officer | Sell | 136,193 | $1.9M |
Source: SEC Form 4 filings · as of 2026-08-20