Firestone Karen bought Amylyx Pharmaceuticals ($AMLX) shares once on the open market in the last year, totaling just over $100,000, with her most recent purchase on December 23, 2025. Her activity ranks 2,176th among nearly 5,000 insiders, below the average buy of $1.5 million across 3.3 transactions. She reported no open market sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 23, 2025 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Not found | P | Common Stock | 8100 | $12.45 | 63,100.0000 | 109,819,569 | 14.73% | 0.01% |
| June 5, 2025 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Not found | A | Stock Option (right to buy) | 25000 | $0.00 | 25,000.0000 | 88,602,468 | 9999.99% | 0.03% |
| Sept. 5, 2024 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Not found | P | Common Stock | 50000 | $2.13 | 55,000.0000 | 0 | 1000.00% | 0.00% |
| June 6, 2024 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Not found | A | Stock Option (right to buy) | 25000 | $0.00 | 25,000.0000 | 0 | 9999.99% | 0.00% |
| Dec. 15, 2023 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Not found | P | Common Stock | 4000 | $14.97 | 5,000.0000 | 0 | 400.00% | 0.00% |
| June 8, 2023 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Director | A | Stock Option (right to buy) | 3908 | $0.00 | 3,908.0000 | 0 | 9999.99% | 0.00% |
| March 16, 2023 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Director | P | Common Stock | 1000 | $31.99 | 1,000.0000 | 0 | 9999.99% | 0.00% |
| March 16, 2023 | Amylyx Pharmaceuticals, Inc. | $AMLX | Firestone Karen | Director | A | Stock Option (Right to Buy) | 27403 | $0.00 | 27,403.0000 | 0 | 9999.99% | 0.00% |