AMLX insider trading — Amylyx Pharmaceuticals, Inc.
Over the last 90 days, insiders at Amylyx Pharmaceuticals, Inc. (AMLX) made 0 open-market purchases worth $0 and 5 open-market sales worth $2.94M, making them net sellers by $2.94M. The largest sale was by Cohen Joshua B (Co-Chief Executive Officer), who sold 30,464 shares for $981K on Sep 10, 2026.
Updated Oct 16, 2026.
Recent AMLX insider transactions
Every Form 4 filed by Amylyx Pharmaceuticals, Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 5, 2026 | Milne George M Jr | Director | S · Sale · 10b5-1 | Direct | 30,000 | $27.70 | $831K | Form 4 |
| Sep 10, 2026 | Frates James M | Chief Financial Officer | S · Sale | Direct | 10,810 | $32.36 | $350K | Form 4 |
| Sep 10, 2026 | Bedrosian Camille L | Chief Medical Officer | S · Sale | Direct | 10,028 | $32.40 | $325K | Form 4 |
| Sep 10, 2026 | Klee Justin B. | Co-Chief Executive Officer | S · Sale | Direct | 30,464 | $32.18 | $980K | Form 4 |
| Sep 10, 2026 | Cohen Joshua B | Co-Chief Executive Officer | S · Sale | Direct | 30,464 | $32.19 | $981K | Form 4 |
| Sep 10, 2026 | Mazzariello Gina | Chief Legal Officer | S · Sale | Direct | 9,536 | $32.46 | $310K | Form 4 |
| Aug 31, 2026 | Firestone Karen | Director | M · Option exercise | Direct | 50,000 | $3.40 | $170K | Form 4 |
| Aug 18, 2026 | Frates James M | Chief Financial Officer | A · Grant/award | Direct | 22,807 | — | — | Form 4 |
| Aug 18, 2026 | Bedrosian Camille L | Chief Medical Officer | A · Grant/award | Direct | 22,807 | — | — | Form 4 |
| Aug 18, 2026 | Klee Justin B. | Co-Chief Executive Officer | A · Grant/award | Direct | 60,039 | — | — | Form 4 |
| Aug 18, 2026 | Mazzariello Gina | Chief Legal Officer | A · Grant/award | Direct | 21,284 | — | — | Form 4 |
| Aug 18, 2026 | Cohen Joshua B | Co-Chief Executive Officer | A · Grant/award | Direct | 60,039 | — | — | Form 4 |
AMLX insider trading FAQ
Are insiders buying AMLX stock?
Not on the open market. In the last 90 days, Amylyx Pharmaceuticals, Inc. insiders made no open-market purchases, and 5 open-market sales totaling $2.94M. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading AMLX?
Recent sellers: Bedrosian Camille L, Cohen Joshua B, Frates James M, Klee Justin B., Mazzariello Gina.
Where does AMLX insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.