As of March 23, 2026, Design Therapeutics's top three insider holders are One Capital Fund I Aggregator Lp Sr (TenPercentOwner, 6.53Mn shares), Simeon George (Director, 6.53Mn shares), Asset Management, Lp Cormorant (Other, 5.11Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| One Capital Fund I Aggregator Lp Sr | 6,526,476 | 0 | 20 Dec, 2022 | |
| Simeon George | 0 | 6,526,476 | 20 Dec, 2022 | |
| Asset Management, Lp Cormorant | 0 | 5,114,844 | 01 Apr, 2021 | |
| Stella Xu | 0 | 4,129,950 | 22 Mar, 2022 | |
| Arsani William | 0 | 1,000,000 | 14 Aug, 2025 | |
| Pratik Shah | Executive Chairperson | 25,000 | 129,923 | 01 Apr, 2021 |
| Rodney W Lappe | 133,024 | 0 | 02 Oct, 2023 | |
| Joao Md Siffert | President And Ceo | 132,619 | 0 | 21 Dec, 2022 |
| John P. Schmid | 0 | 26,965 | 25 Mar, 2024 | |
| Deepa Prasad | 20,000 | 0 | 19 Dec, 2024 | |
| Heather A. Berger | 1,300 | 0 | 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 |
|---|---|---|---|---|---|---|---|---|
| 02 Jan, 2026 | Julie Burgess | Stock option (right to buy) | A | 150,000 | $0.00 | 150,000 | D | A |
| 02 Jan, 2026 | Pratik Shah | Stock option (right to buy) | A | 750,000 | $0.00 | 750,000 | D | A |
| 02 Jan, 2026 | Justin D. Gover | Stock option (right to buy) | A | 45,000 | $0.00 | 45,000 | D | A |
| 02 Jan, 2026 | Chris Storgard | Stock option (right to buy) | A | 250,000 | $0.00 | 250,000 | D | A |
| 02 Jan, 2026 | Sean Jeffries | Stock option (right to buy) | A | 375,000 | $0.00 | 375,000 | D | A |
| 09 Dec, 2025 | Pratik Shah | Stock option (right to buy) | A | 525,000 | $0.00 | 525,000 | D | A |
| 09 Dec, 2025 | Pratik Shah | Stock option (right to buy) | A | 525,000 | $0.00 | 525,000 | D | A |
| 09 Sep, 2025 | Justin D. Gover | Stock option (right to buy) | A | 30,000 | $0.00 | 30,000 | D | A |
| 09 Sep, 2025 | Justin D. Gover | Stock option (right to buy) | A | 15,833 | $0.00 | 15,833 | D | A |
| 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 |
| 10 Jun, 2025 | Arsani William | Stock Option (right to buy) | A | 19,000 | $0.00 | 19,000 | D | A |
| 10 Jun, 2025 | John P. Schmid | Stock Option (right to buy) | A | 19,000 | $0.00 | 19,000 | D | A |
| 10 Jun, 2025 | Simeon George | Stock Option (right to buy) | A | 19,000 | $0.00 | 19,000 | D | A |
| 10 Jun, 2025 | Deepa Prasad | Stock Option (right to buy) | A | 19,000 | $0.00 | 19,000 | D | A |
| 10 Jun, 2025 | Rodney W Lappe | Stock Option (right to buy) | A | 19,000 | $0.00 | 19,000 | D | A |
| 10 Jun, 2025 | Heather A. Berger | Stock Option (right to buy) | A | 19,000 | $0.00 | 19,000 | D | A |
| 01 May, 2025 | Chris Storgard | Stock Option (right to buy) | A | 400,000 | $0.00 | 400,000 | D | A |
| 02 Jan, 2025 | Rodney W Lappe | Stock option (right to buy) | A | 25,993 | $0.00 | 25,993 | D | A |
| 02 Jan, 2025 | Sean Jeffries | Stock option (right to buy) | A | 260,000 | $0.00 | 260,000 | D | A |