SGMO's three largest insider shareholders as of May 05, 2026 are Inc. Biogen (TenPercentOwner, 17.65Mn shares), Sandy Macrae (President, Ceo And Director, 1.91Mn shares), Prathyusha Duraibabu (Principal Financial Officer, 660.04K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Inc. Biogen | - | 0 | 17,652,466 | 28 Sep, 2023 |
| Sandy Macrae | President, Ceo And Director | 1,907,656 | 0 | 26 Feb, 2026 |
| Prathyusha Duraibabu | Principal Financial Officer | 660,042 | 0 | 26 Jan, 2026 |
| Scott B. Willoughby | Svp, Chief Legal Officer, Secy | 651,406 | 0 | 26 Feb, 2026 |
| Scott B. Willoughby | Svp, Chief Legal Officer, Secy | 651,406 | 0 | 26 Feb, 2026 |
| Nathalie Dubois-Stringfellow | Svp Chief Development Officer | 332,769 | 0 | 23 Apr, 2026 |
| Nikunj Jain | Principal Accounting Officer | 237,211 | 0 | 26 Feb, 2026 |
| David Mark Mcclung | Evp, Chief Operating Officer | 212,471 | 0 | 28 Nov, 2023 |
| Amy Pooler | Vp, Head Of Research | 193,923 | 0 | 27 Aug, 2024 |
| Rolf Andrew Ramelmeier | Evp, Technical Operations | 171,467 | 0 | 30 May, 2023 |
| Jason D. Fontenot | Svp, Chief Scientific Officer | 136,270 | 0 | 28 Nov, 2023 |
| Gregory D Davis | Head Of Research Technology | 115,284 | 0 | 23 Apr, 2026 |
| H Stewart Parker | - | 112,600 | 0 | 16 Jun, 2025 |
| Karen L. Smith | - | 102,100 | 0 | 16 Jun, 2025 |
| Karen L. Smith | - | 102,100 | 0 | 16 Jun, 2025 |
| James R Meyers | - | 99,600 | 0 | 16 Jun, 2025 |
| Robert Carey | - | 99,600 | 0 | 16 Jun, 2025 |
| Kenneth J. Hillan | - | 99,600 | 0 | 16 Jun, 2025 |
| John Markels | - | 96,384 | 0 | 16 Jun, 2025 |
| Courtney Beers | - | 82,650 | 0 | 16 Jun, 2025 |
| Margaret A Horn | - | 82,650 | 0 | 16 Jun, 2025 |
| Robert J. Schott | Svp, Head Of Development | 75,537 | 0 | 01 Mar, 2022 |
| Robert J. Schott | Svp, Head Of Development | 75,537 | 0 | 01 Mar, 2022 |
| Joseph S Zakrzewski | - | 60,700 | 0 | 01 Mar, 2022 |
| Joseph S Zakrzewski | - | 60,700 | 0 | 01 Mar, 2022 |
| Saira Ramasastry | - | 35,700 | 0 | 01 Mar, 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 |
|---|---|---|---|---|---|---|---|---|
| 22 Apr, 2026 | Gregory D Davis | Common Stock | D | 69,827 | $0.25 | 115,284 | D | S |
| 22 Apr, 2026 | Gregory D Davis | Common Stock | D | 69,827 | $0.25 | 115,284 | D | S |
| 21 Apr, 2026 | Nathalie Dubois-Stringfellow | Common Stock | D | 345,942 | $0.26 | 332,769 | D | S |
| 22 Apr, 2026 | Gregory D Davis | Common Stock | D | 69,827 | $0.25 | 115,284 | D | S |
| 21 Apr, 2026 | Nathalie Dubois-Stringfellow | Common Stock | D | 345,942 | $0.26 | 332,769 | D | S |
| 21 Apr, 2026 | Nathalie Dubois-Stringfellow | Common Stock | D | 345,942 | $0.26 | 332,769 | D | S |
| 22 Apr, 2026 | Gregory D Davis | Common Stock | D | 69,827 | $0.25 | 115,284 | D | S |
| 22 Apr, 2026 | Gregory D Davis | Common Stock | D | 69,827 | $0.25 | 115,284 | D | S |
| 21 Apr, 2026 | Nathalie Dubois-Stringfellow | Common Stock | D | 345,942 | $0.26 | 332,769 | D | S |
| 21 Apr, 2026 | Nathalie Dubois-Stringfellow | Common Stock | D | 345,942 | $0.26 | 332,769 | D | S |
| 01 Apr, 2026 | Scott B. Willoughby | Stock Option (Right to Buy) | A | 800,000 | $0.00 | 800,000 | D | A |
| 01 Apr, 2026 | Sandy Macrae | Stock Option (Right to Buy) | A | 2,500,000 | $0.00 | 2,500,000 | D | A |
| 01 Apr, 2026 | Gregory D Davis | Stock Option (Right to Buy) | A | 225,000 | $0.00 | 225,000 | D | A |
| 01 Apr, 2026 | Nathalie Dubois-Stringfellow | Stock Option (Right to Buy) | A | 800,000 | $0.00 | 800,000 | D | A |
| 01 Apr, 2026 | Nikunj Jain | Stock Option (Right to Buy) | A | 225,000 | $0.00 | 225,000 | D | A |
| 24 Feb, 2026 | Scott B. Willoughby | Common Stock | D | 1,650 | $0.47 | 663,760 | D | F |
| 24 Feb, 2026 | Nathalie Dubois-Stringfellow | Common Stock | D | 2,063 | $0.47 | 691,065 | D | F |
| 24 Feb, 2026 | Gregory D Davis | Common Stock | D | 832 | $0.47 | 190,230 | D | F |
| 24 Feb, 2026 | Sandy Macrae | Common Stock | D | 5,291 | $0.47 | 1,941,293 | D | F |
| 24 Feb, 2026 | Nikunj Jain | Common Stock | D | 666 | $0.47 | 242,330 | D | F |