Karen Firestone's most recent trade in Amylyx Pharmaceuticals Inc was a trade of 25,000 Common Stock done at an average price of $1.8 . Disclosure was reported to the exchange on Aug. 31, 2026.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Amylyx Pharma Inc | Karen Firestone | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.76 per share. | 31 Aug 2026 | 25,000 | 91,900 | - | 1.8 | 44,000 | Common Stock |
| Amylyx Pharma Inc | Karen Firestone | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 31 Aug 2026 | 25,000 | 0 | - | - | Stock Option (right to buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 31 Aug 2026 | 25,000 | 0 | - | - | Stock Option (right to buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 5.05 per share. | 31 Aug 2026 | 25,000 | 116,900 | - | 5.1 | 126,250 | Common Stock |
| Amylyx Pharma Inc | Karen Firestone | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 04 Jun 2026 | 24,372 | 24,372 | - | - | Stock Option (right to buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Purchase of securities on an exchange or from another person at price $ 13.51 per share. | 21 May 2026 | 3,800 | 66,900 | - | 13.5 | 51,338 | Common Stock |
| Amylyx Pharma Inc | Karen Firestone | Director | Purchase of securities on an exchange or from another person at price $ 12.45 per share. | 23 Dec 2025 | 8,100 | 63,100 | - | 12.5 | 100,845 | Common Stock |
| Amylyx Pharma Inc | Karen Firestone | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 05 Jun 2025 | 25,000 | 25,000 | - | - | Stock Option (right to buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Purchase of securities on an exchange or from another person at price $ 2.13 per share. | 05 Sep 2024 | 50,000 | 55,000 | - | 2.1 | 106,590 | Common Stock |
| Amylyx Pharma Inc | Karen Firestone | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 06 Jun 2024 | 25,000 | 25,000 | - | - | Stock Option (right to buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Purchase of securities on an exchange or from another person at price $ 14.97 per share. | 15 Dec 2023 | 4,000 | 5,000 | - | 15.0 | 59,880 | Common Stock |
| Amylyx Pharma Inc | Karen Firestone | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 08 Jun 2023 | 3,908 | 3,908 | - | - | Stock Option (right to buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Mar 2023 | 27,403 | 27,403 | - | - | Stock Option (Right to Buy) | |
| Amylyx Pharma Inc | Karen Firestone | Director | Purchase of securities on an exchange or from another person at price $ 31.99 per share. | 16 Mar 2023 | 1,000 | 1,000 | - | 32.0 | 31,990 | Common Stock |