Amylyx Pharmaceuticals Inc (AMLX)
Insider transactions
A complete record of Form 4 filings tracking every share acquisition and disposal by executives, directors, and senior officers. Filterable by date range and transaction type, the table exposes the direct market actions of those with the deepest knowledge of a company's operations — providing a factual, data-driven signal of internal conviction that complements traditional fundamental and technical analysis.
Transaction date | Executive | Executive Title | Security Type | Acquisition / Disposal | Shares | Share price |
|---|---|---|---|---|---|---|
| Sep 10, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Disposal | 9,768 | 32.268 |
| Sep 10, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Disposal | 1,042 | 33.23 |
| Sep 10, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 1,439 | 33.155 |
| Sep 10, 2026 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Disposal | 7,947 | 32.214 |
| Sep 10, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 29,025 | 32.129 |
| Sep 10, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 919 | 33.149 |
| Sep 10, 2026 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Disposal | 2,081 | 33.092 |
| Sep 10, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 9,525 | 32.456 |
| Sep 10, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 29,545 | 32.156 |
| Sep 10, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 11 | 33.34 |
| Aug 31, 2026 | FIRESTONE, KAREN | Director | Stock Option (right to buy) | Disposal | 25,000 | 0 |
| Aug 31, 2026 | FIRESTONE, KAREN | Director | Common Stock | Acquisition | 25,000 | 1.76 |
| Aug 18, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Acquisition | 22,807 | 0 |
| Aug 18, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Acquisition | 21,284 | 0 |
| Aug 18, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 60,039 | 0 |
| Aug 18, 2026 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Acquisition | 22,807 | 0 |
| Aug 18, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 60,039 | 0 |
| Jul 10, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 15,000 | 17.608 |
| Jul 9, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 15,000 | 18.316 |
| Jun 4, 2026 | QUIMI, DAPHNE | Director | Stock Option (right to buy) | Acquisition | 24,372 | 0 |
| Jun 4, 2026 | MILNE, GEORGE M JR | Director | Stock Option (right to buy) | Acquisition | 24,372 | 0 |
| Jun 4, 2026 | ZEIHER, BERNHARDT G | Director | Stock Option (right to buy) | Acquisition | 24,372 | 0 |
| Jun 4, 2026 | FIRESTONE, KAREN | Director | Stock Option (right to buy) | Acquisition | 24,372 | 0 |
| Jun 4, 2026 | FONTEYNE, PAUL R. | Director | Stock Option (right to buy) | Acquisition | 24,372 | 0 |
| May 21, 2026 | FIRESTONE, KAREN | Director | Common Stock | Acquisition | 3,800 | 13.51 |
| Mar 5, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 248,865 | 0 |
| Mar 5, 2026 | FRATES, JAMES M | Chief Financial Officer | Stock Option (right to buy) | Acquisition | 143,985 | 0 |
| Mar 5, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Stock Option (Right to Buy) | Acquisition | 373,295 | 0 |
| Mar 5, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Stock Option (Right to Buy) | Acquisition | 373,295 | 0 |
| Mar 5, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 248,865 | 0 |
| Mar 5, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Stock Option (Right to Buy) | Acquisition | 111,990 | 0 |
| Mar 5, 2026 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Stock Option (Right to Buy) | Acquisition | 143,985 | 0 |
| Mar 5, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Acquisition | 95,990 | 0 |
| Mar 5, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Acquisition | 74,660 | 0 |
| Mar 5, 2026 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Acquisition | 95,990 | 0 |
| Mar 2, 2026 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Disposal | 6,461 | 14.581 |
| Mar 2, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 29,282 | 14.484 |
| Mar 2, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 6,844 | 14.521 |
| Mar 2, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Disposal | 7,909 | 14.522 |
| Mar 2, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 29,282 | 14.472 |
| Feb 23, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 3,419 | 14.142 |
| Feb 2, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Disposal | 3,557 | 14.646 |
| Feb 2, 2026 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 3,448 | 14.651 |
| Feb 2, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 15,500 | 14.683 |
| Feb 2, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 15,500 | 14.685 |
| Jan 16, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 2,847 | 7.57 |
| Jan 16, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Stock Option (Right to Buy) | Disposal | 2,818 | 0 |
| Jan 16, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 1,995 | 13.885 |
| Jan 16, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Stock Option (Right to Buy) | Disposal | 2,847 | 0 |
| Jan 16, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 1,974 | 13.829 |
| Jan 16, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 2,818 | 7.57 |
| Jan 15, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 197,182 | 7.57 |
| Jan 15, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Acquisition | 197,153 | 7.57 |
| Jan 15, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 136,193 | 13.59 |
| Jan 15, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Stock Option (Right to Buy) | Disposal | 197,182 | 0 |
| Jan 15, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 136,193 | 13.583 |
| Jan 15, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Stock Option (Right to Buy) | Disposal | 197,153 | 0 |
| Jan 12, 2026 | MILNE, GEORGE M JR | Director | Common Stock | Disposal | 17,780 | 0 |
| Jan 6, 2026 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Disposal | 3,326 | 11.111 |
| Jan 6, 2026 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 7,715 | 11.094 |
| Jan 6, 2026 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 7,715 | 11.095 |
| Dec 23, 2025 | FIRESTONE, KAREN | Director | Common Stock | Acquisition | 8,100 | 12.45 |
| Dec 1, 2025 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Disposal | 6,580 | 14.349 |
| Sep 30, 2025 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 200 | 15.01 |
| Sep 30, 2025 | BEDROSIAN, CAMILLE L | Chief Medical Officer | Common Stock | Disposal | 12,039 | 14.579 |
| Sep 30, 2025 | MAZZARIELLO, GINA | Chief Legal Officer | Common Stock | Disposal | 8,828 | 14.575 |
| Sep 30, 2025 | KLEE, JUSTIN B. | Director, Co-Chief Executive Officer | Common Stock | Disposal | 29,775 | 14.373 |
| Sep 30, 2025 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 200 | 14.998 |
| Sep 30, 2025 | FRATES, JAMES M | Chief Financial Officer | Common Stock | Disposal | 10,558 | 14.648 |
| Sep 30, 2025 | COHEN, JOSHUA B | Director, Co-Chief Executive Officer | Common Stock | Disposal | 29,733 | 14.343 |