As of September 29, 2026, the three largest insider holders of EDIT are Gilmore Neil O'Neill (Ceo, 243.19K shares), Baisong Mei (Evp, Chief Medical Officer, 133.35K shares), Erick Lucera (Evp, Chief Financial Officer, 112.72K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Gilmore Neil O'Neill | Ceo | 243,189 | 0 | 243,189 | 24.9% | 04 Sep, 2026 |
| 2 | Baisong Mei | Evp, Chief Medical Officer | 133,354 | 0 | 133,354 | 13.6% | 05 Dec, 2024 |
| 3 | Erick Lucera | Evp, Chief Financial Officer | 112,720 | 0 | 112,720 | 11.5% | 05 Mar, 2025 |
| 4 | Michelle Robertson | Evp, Chief Financial Officer | 106,610 | 0 | 106,610 | 10.9% | 15 May, 2023 |
| 5 | James C Mullen | Ceo | 75,898 | 0 | 75,898 | 7.8% | 04 Jan, 2022 |
| 6 | Bruce Eaton | Evp, Cbo And Cto | 74,791 | 0 | 74,791 | 7.6% | 07 Dec, 2023 |
| 7 | Jessica Hopfield | Director | 67,700 | 0 | 67,700 | 6.9% | 14 May, 2024 |
| 8 | Mark S Shearman | Evp, Chief Scientific Officer | 65,559 | 0 | 65,559 | 6.7% | 15 Feb, 2023 |
| 9 | Linda Burkly | Evp, Chief Scientific Officer | 61,660 | 0 | 61,660 | 6.3% | 04 Sep, 2026 |
| 10 | Lisa Anne Michaels | Evp/Chief Medical Officer | 22,675 | 0 | 22,675 | 2.3% | 23 Dec, 2021 |
| 11 | Amy Parison | Svp, Chief Financial Officer | 13,839 | 0 | 13,839 | 1.4% | 04 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 08 Sep, 2026 | Daniel Scott Ory | Evp, Chief Medical Officer | Acquired A | 950,000 | $0.00 | $0 | 950,000 | Direct |
| 03 Sep, 2026 | Gilmore Neil O'Neill | Ceo | Disposed S | 5,124 | $3.04 | $15.56K | 243,189 | Direct |
| 03 Sep, 2026 | Linda Burkly | Evp, Chief Scientific Officer | Disposed S | 709 | $3.04 | $2.15K | 61,660 | Direct |
| 03 Sep, 2026 | Amy Parison | Svp, Chief Financial Officer | Disposed S | 453 | $3.04 | $1.38K | 13,839 | Direct |
| 06 Aug, 2026 | Patrick Thomas Ii Ellinor | Director | Acquired A | 103,400 | $0.00 | $0 | 103,400 | Direct |
| 03 Aug, 2026 | Amy Parison | Svp, Chief Financial Officer | Disposed S | 678 | $2.58 | $1.75K | 14,292 | Direct |
| 28 Jul, 2026 | Linda Burkly | Evp, Chief Scientific Officer | Disposed S | 4,928 | $2.67 | $13.16K | 62,369 | Direct |
| 17 Jun, 2026 | Andrew Hirsch | Director | Acquired A | 51,700 | $0.00 | $0 | 51,700 | Direct |
| 17 Jun, 2026 | Elliott M. Levy | Director | Acquired A | 51,700 | $0.00 | $0 | 51,700 | Direct |
| 17 Jun, 2026 | David Scadden | Director | Acquired A | 51,700 | $0.00 | $0 | 51,700 | Direct |
| 17 Jun, 2026 | Bernadette Connaughton | Director | Acquired A | 51,700 | $0.00 | $0 | 51,700 | Direct |
| 17 Jun, 2026 | Jessica Hopfield | Director | Acquired A | 51,700 | $0.00 | $0 | 51,700 | Direct |
| 03 Jun, 2026 | Gilmore Neil O'Neill | Ceo | Disposed S | 15,380 | $2.70 | $41.54K | 248,313 | Direct |
| 03 Jun, 2026 | Amy Parison | Svp, Chief Financial Officer | Disposed S | 464 | $2.70 | $1.25K | 14,970 | Direct |
| 03 Jun, 2026 | Linda Burkly | Evp, Chief Scientific Officer | Disposed S | 731 | $2.70 | $1.97K | 67,297 | Direct |
| 12 Mar, 2026 | Gilmore Neil O'Neill | Ceo | Acquired A | 1,015,200 | $0.00 | $0 | 1,015,200 | Direct |
| 12 Mar, 2026 | Linda Burkly | Evp, Chief Scientific Officer | Acquired A | 292,856 | $0.00 | $0 | 292,856 | Direct |
| 12 Mar, 2026 | Amy Parison | Svp, Chief Financial Officer | Acquired A | 292,856 | $0.00 | $0 | 292,856 | Direct |
| 03 Mar, 2026 | Gilmore Neil O'Neill | Ceo | Disposed S | 5,394 | $2.02 | $10.89K | 263,693 | Direct |
| 03 Mar, 2026 | Amy Parison | Svp, Chief Financial Officer | Disposed S | 474 | $2.02 | $957 | 15,434 | Direct |