Data spanning the past 90 days through January 09, 2026 reveals that Design Therapeutics's three principal insider shareholders consist of TenPercentOwner One Capital Fund I Aggregator Lp Sr (6.53Mn shares), Director Simeon George (6.53Mn shares), Director Stella Xu (4.13Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| One Capital Fund I Aggregator Lp Sr | 6,526,476 | 20 Dec, 2022 | |
| Simeon George | 6,526,476 | 20 Dec, 2022 | |
| Stella Xu | 4,129,950 | 22 Mar, 2022 | |
| Arsani William | 1,000,000 | 14 Aug, 2025 | |
| Rodney W Lappe | 133,024 | 02 Oct, 2023 | |
| Joao Md Siffert | President And Ceo | 132,619 | 21 Dec, 2022 |
| John P. Schmid | 39,830 | 25 Mar, 2024 | |
| Deepa Prasad | 20,000 | 19 Dec, 2024 | |
| Heather A. Berger | 1,300 | 25 Mar, 2024 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 13 Aug, 2025 | Arsani William | Common Stock | D | 345,000 | $5.25 | 2,655,000 | I | S |
| 13 Aug, 2025 | Arsani William | Common Stock | D | 217,627 | $5.25 | 1,000,000 | I | S |
| 18 Dec, 2024 | Deepa Prasad | - | - | 20,000 | D | |||
| 18 Dec, 2024 | Deepa Prasad | Common Stock | D | 3,806 | $6.27 | 20,000 | D | S |
| 09 Aug, 2024 | Arsani William | Common Stock | D | 814,874 | $4.25 | 0 | I | S |
| 09 Aug, 2024 | Arsani William | - | - | 0 | I | |||
| 25 Mar, 2024 | John P. Schmid | - | - | 9,156 | I | |||
| 25 Mar, 2024 | John P. Schmid | Common Stock | A | 17,809 | $3.74 | 9,156 | I | P |
| 25 Mar, 2024 | Heather A. Berger | - | - | 1,300 | D | |||
| 25 Mar, 2024 | Heather A. Berger | Common Stock | A | 1,300 | $3.74 | 1,300 | D | P |
| 22 Mar, 2024 | John P. Schmid | - | - | 30,674 | D | |||
| 22 Mar, 2024 | John P. Schmid | Common Stock | A | 9,156 | $3.62 | 30,674 | D | P |
| 29 Sep, 2023 | Rodney W Lappe | - | - | 133,024 | D | |||
| 29 Sep, 2023 | Rodney W Lappe | Common Stock | A | 21,000 | $2.35 | 133,024 | D | P |
| 29 Aug, 2023 | Arsani William | Common Stock | A | 1,960,000 | $2.44 | 3,000,000 | I | P |
| 29 Aug, 2023 | Arsani William | - | - | 3,000,000 | I | |||
| 29 Aug, 2023 | Deepa Prasad | Common Stock | A | 12,000 | $2.31 | 23,806 | D | P |
| 29 Aug, 2023 | Deepa Prasad | - | - | 23,806 | D | |||
| 28 Aug, 2023 | Arsani William | - | - | 1,040,000 | I | |||
| 28 Aug, 2023 | Arsani William | Common Stock | A | 275,000 | $2.15 | 1,040,000 | I | P |