As of May 30, 2026, the three largest insider holders of DFTX are Dan Karlin (Chief Medical Officer, 4.08Mn shares), Robert Barrow (Chief Executive Officer, 3.98Mn shares), Miri Halperin Wernli (Executive President, 1.27Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| David W Gryska | - | 19,851 | 0 | 05 Dec, 2024 |
| Mark Sullivan | Chief Legal Officer | 271,079 | 0 | 26 Mar, 2026 |
| Cynthia W. Hu | Chief Legal Officersecretary | 1,200,000 | 0 | 28 Mar, 2022 |
| Brigid Makes | - | 158,706 | 0 | 06 Jun, 2022 |
| Carol A Vallone | - | 43,104 | 0 | 06 Jun, 2022 |
| Andreas Krebs | - | 21,552 | 0 | 06 Jun, 2022 |
| Brandi Roberts | Chief Financial Officer | 150,000 | 0 | 05 Feb, 2026 |
| Suzanne Louise Bruhn | - | 19,623 | 0 | 23 Jun, 2023 |
| Roger Crystal | - | 19,623 | 0 | 23 Jun, 2023 |
| Matthew T. Wiley | Chief Commercial Officer | 115,000 | 0 | 05 Feb, 2026 |
| Schond L. Greenway | Chief Financial Officer | 1,270,000 | 0 | 03 Jun, 2022 |
| Robert Barrow | Chief Executive Officer | 3,976,894 | 0 | 26 May, 2022 |
| Miri Halperin Wernli | Executive President | 1,275,000 | 0 | 28 Mar, 2022 |
| Dan Karlin | Chief Medical Officer | 4,077,719 | 0 | 31 May, 2022 |
| Carrie Liao | Vp, Controlleracct Principal | 403,430 | 0 | 14 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 |
|---|---|---|---|---|---|---|---|---|
| 25 Mar, 2026 | Mark Sullivan | Common Shares | D | 10,702 | $18.47 | 271,079 | D | S |
| 25 Mar, 2026 | Mark Sullivan | Common Shares | D | 10,702 | $18.47 | 271,079 | D | S |
| 25 Mar, 2026 | Robert Barrow | Common Shares | D | 24,431 | $18.47 | 752,454 | D | S |
| 25 Mar, 2026 | Daniel Karlin | Common Shares | D | 8,018 | $18.47 | 413,317 | D | S |
| 03 Feb, 2026 | Mark Sullivan | Common Shares | A | 125,000 | $0.00 | 407,576 | D | A |
| 03 Feb, 2026 | Brandi Roberts | Common Shares | A | 150,000 | $0.00 | 150,000 | D | A |
| 03 Feb, 2026 | Matthew T. Wiley | Common Shares | A | 115,000 | $0.00 | 115,000 | D | A |
| 03 Feb, 2026 | Matthew T. Wiley | Common Shares | A | 115,000 | $0.00 | 115,000 | D | A |
| 03 Feb, 2026 | Robert Barrow | Common Shares | A | 320,000 | $0.00 | 1,098,477 | D | A |
| 03 Feb, 2026 | Mark Sullivan | Common Shares | A | 125,000 | $0.00 | 407,576 | D | A |
| 03 Feb, 2026 | Daniel Karlin | Common Shares | A | 150,000 | $0.00 | 575,025 | D | A |
| 29 Jan, 2026 | Roger Adsett | Stock Option (Right to Buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 26 Dec, 2025 | Mark Sullivan | Common Shares | D | 11,276 | $13.15 | 282,576 | D | S |
| 26 Dec, 2025 | Mark Sullivan | Common Shares | D | 11,276 | $13.15 | 282,576 | D | S |
| 26 Dec, 2025 | Daniel Karlin | Common Shares | D | 5,600 | $13.15 | 425,025 | D | S |
| 26 Dec, 2025 | Robert Barrow | Common Shares | D | 25,791 | $13.15 | 778,477 | D | S |
| 25 Sep, 2025 | Daniel Karlin | Common Shares | D | 7,704 | $9.77 | 430,625 | D | S |
| 25 Sep, 2025 | Mark Sullivan | Common Shares | D | 11,278 | $9.77 | 293,852 | D | S |
| 25 Sep, 2025 | Robert Barrow | Common Shares | D | 25,797 | $9.77 | 804,268 | D | S |
| 25 Sep, 2025 | Mark Sullivan | Common Shares | D | 11,278 | $9.77 | 293,852 | D | S |