Based on data from the past 90 days ending December 12, 2025, Editas Medicine's three largest insider shareholders are CEO Gilmore Neil O'Neill (269.09K shares), EVP And Chief Scientific Officer Linda Burkly (68.78K shares), SVP And Chief Financial Officer Amy Parison (15.91K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Gilmore Neil O'Neill | CEO | 269,087 | 04 Dec, 2025 |
| Baisong Mei | EVP And Chief Medical Officer | 133,354 | 05 Dec, 2024 |
| Erick Lucera | EVP And Chief Financial Officer | 112,720 | 05 Mar, 2025 |
| Michelle Robertson | EVP And Chief Financial Officer | 106,610 | 15 May, 2023 |
| James C Mullen | CEO | 75,898 | 04 Jan, 2022 |
| Bruce Eaton | EVP And Cbo And Cto | 74,791 | 07 Dec, 2023 |
| Linda Burkly | EVP And Chief Scientific Officer | 68,777 | 04 Dec, 2025 |
| Jessica Hopfield | 67,700 | 14 May, 2024 | |
| Mark S Shearman | EVP And Chief Scientific Officer | 65,559 | 15 Feb, 2023 |
| Cynthia Collins | CEO | 43,760 | 10 Feb, 2021 |
| Lisa Anne Michaels | EVP/Chief Medical Officer | 22,675 | 23 Dec, 2021 |
| Amy Parison | SVP And Chief Financial Officer | 15,908 | 04 Dec, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 03 Dec, 2025 | Amy Parison | Common Stock | D | 461 | $2.15 | 15,908 | D | S |
| 03 Dec, 2025 | Gilmore Neil O'Neill | Common Stock | D | 5,603 | $2.15 | 269,087 | D | S |
| 03 Dec, 2025 | Linda Burkly | Common Stock | D | 713 | $2.15 | 68,777 | D | S |
| 03 Sep, 2025 | Linda Burkly | Common Stock | D | 710 | $2.60 | 69,490 | D | S |
| 03 Sep, 2025 | Amy Parison | Common Stock | D | 458 | $2.60 | 16,369 | D | S |
| 03 Sep, 2025 | Gilmore Neil O'Neill | Common Stock | D | 5,592 | $2.60 | 274,690 | D | S |
| 07 Aug, 2025 | Amy Parison | Common Stock | D | 679 | $2.58 | 16,827 | D | S |
| 31 Jul, 2025 | Linda Burkly | Common Stock | D | 5,121 | $2.49 | 64,398 | D | S |
| 03 Jun, 2025 | Gilmore Neil O'Neill | Common Stock | D | 15,192 | $1.72 | 280,282 | D | S |
| 03 Jun, 2025 | Amy Parison | Common Stock | D | 446 | $1.72 | 17,506 | D | S |
| 03 Jun, 2025 | Linda Burkly | Common Stock | D | 726 | $1.72 | 69,519 | D | S |
| 04 Mar, 2025 | Erick Lucera | Common Stock | D | 4,109 | $1.71 | 112,720 | D | S |
| 04 Mar, 2025 | Erick Lucera | - | - | 112,720 | D | |||
| 04 Mar, 2025 | Linda Burkly | Common Stock | D | 2,891 | $1.71 | 70,245 | D | S |
| 04 Mar, 2025 | Gilmore Neil O'Neill | Common Stock | D | 16,632 | $1.71 | 295,474 | D | S |
| 03 Dec, 2024 | Baisong Mei | - | - | 133,354 | D | |||
| 03 Dec, 2024 | Baisong Mei | Common Stock | D | 541 | $2.08 | 133,354 | D | S |
| 03 Dec, 2024 | Gilmore Neil O'Neill | Common Stock | D | 1,618 | $2.08 | 312,106 | D | S |
| 04 Sep, 2024 | Baisong Mei | Common Stock | D | 518 | $3.42 | 133,895 | D | S |
| 04 Sep, 2024 | Gilmore Neil O'Neill | Common Stock | D | 1,555 | $3.42 | 313,724 | D | S |