As of March 23, 2026, the three largest insider holders of AMLX are Venture Investments Ltd Morningside (TenPercentOwner, 10.68Mn shares), Isaac Cheng (Director, 10.42Mn shares), Invest 1 B.V. Als (TenPercentOwner, 5.90Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Venture Investments Ltd Morningside | 0 | 10,678,808 | 17 Mar, 2022 | |
| Isaac Cheng | 6,578 | 10,415,650 | 10 Jan, 2022 | |
| Invest 1 B.V. Als | 5,895,280 | 0 | 08 Jul, 2022 | |
| Venture Investments Ltd Morningside | 4,997,302 | 0 | 17 Aug, 2023 | |
| Joshua B Cohen | Co Chief Executive Officer | 3,583,548 | 0 | 09 Mar, 2026 |
| Justin B. Klee | Co Chief Executive Officer | 3,583,481 | 0 | 09 Mar, 2026 |
| Global Investors Lp Viking | 0 | 1,850,940 | 09 Sep, 2022 | |
| George M Jr Milne | 812,881 | 0 | 14 Jan, 2026 | |
| Margaret Olinger | Chief Commercial Officer | 276,108 | 0 | 29 Dec, 2023 |
| Camille L Bedrosian | Chief Medical Officer | 265,285 | 0 | 09 Mar, 2026 |
| James M Frates | Chief Financial Officer | 261,628 | 0 | 09 Mar, 2026 |
| Gina Mazzariello | Chief Legal Officer | 209,090 | 0 | 09 Mar, 2026 |
| Patrick D Yeramian | Chief Medical Officer | 205,605 | 0 | 11 Jan, 2024 |
| Karen Firestone | 63,100 | 0 | 23 Dec, 2025 | |
| James M Frates | Chief Financial Officer | 0 | 11,072 | 02 Nov, 2023 |
| Bernhardt G Zeiher | 10,000 | 0 | 24 Mar, 2025 | |
| Daphne Quimi | 5,000 | 0 | 16 May, 2024 | |
| Paul R. Fonteyne | 3,947 | 0 | 10 Jan, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 05 Mar, 2026 | Joshua B Cohen | Common Stock | A | 248,865 | $0.00 | 3,583,548 | D | A |
| 05 Mar, 2026 | Camille L Bedrosian | Common Stock | A | 95,990 | $0.00 | 265,285 | D | A |
| 05 Mar, 2026 | Gina Mazzariello | Common Stock | A | 74,660 | $0.00 | 209,090 | D | A |
| 05 Mar, 2026 | James M Frates | Common Stock | A | 95,990 | $0.00 | 261,628 | D | A |
| 05 Mar, 2026 | Justin B. Klee | Common Stock | A | 248,865 | $0.00 | 3,583,481 | D | A |
| 05 Mar, 2026 | Gina Mazzariello | Stock Option (Right to Buy) | A | 111,990 | $0.00 | 111,990 | D | A |
| 05 Mar, 2026 | Camille L Bedrosian | Stock Option (Right to Buy) | A | 143,985 | $0.00 | 143,985 | D | A |
| 05 Mar, 2026 | Joshua B Cohen | Stock Option (Right to Buy) | A | 373,295 | $0.00 | 373,295 | D | A |
| 05 Mar, 2026 | Justin B. Klee | Stock Option (Right to Buy) | A | 373,295 | $0.00 | 373,295 | D | A |
| 05 Mar, 2026 | James M Frates | Stock Option (right to buy) | A | 143,985 | $0.00 | 143,985 | D | A |
| 02 Mar, 2026 | Gina Mazzariello | Common Stock | D | 6,844 | $14.52 | 134,430 | D | S |
| 02 Mar, 2026 | Justin B. Klee | Common Stock | D | 29,282 | $14.47 | 3,334,616 | D | S |
| 02 Mar, 2026 | Joshua B Cohen | Common Stock | D | 29,282 | $14.48 | 3,334,683 | D | S |
| 02 Mar, 2026 | Camille L Bedrosian | Common Stock | D | 6,461 | $14.58 | 169,295 | D | S |
| 02 Mar, 2026 | James M Frates | Common Stock | D | 7,909 | $14.52 | 165,638 | D | S |
| 23 Feb, 2026 | Gina Mazzariello | Common Stock | D | 3,419 | $14.14 | 141,274 | D | S |
| 02 Feb, 2026 | Justin B. Klee | Common Stock | D | 15,500 | $14.69 | 3,363,898 | D | S |
| 02 Feb, 2026 | Gina Mazzariello | Common Stock | D | 3,448 | $14.65 | 144,693 | D | S |
| 02 Feb, 2026 | Joshua B Cohen | Common Stock | D | 15,500 | $14.68 | 3,363,965 | D | S |
| 02 Feb, 2026 | James M Frates | Common Stock | D | 3,557 | $14.65 | 173,547 | D | S |