Design Therapeutics's top three insider shareholders as of May 14, 2026 are Simeon George (Director, 6.53Mn shares), One Capital Fund I Aggregator Lp Sr (TenPercentOwner, 6.53Mn shares), Stella Xu (Director, 4.13Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Simeon George | - | 0 | 6,526,476 | 20 Dec, 2022 |
| One Capital Fund I Aggregator Lp Sr | - | 6,526,476 | 0 | 20 Dec, 2022 |
| Stella Xu | - | 0 | 4,129,950 | 22 Mar, 2022 |
| Arsani William | - | 0 | 3,655,000 | 14 Aug, 2025 |
| Rodney W Lappe | - | 133,024 | 0 | 02 Oct, 2023 |
| Joao Md Siffert | President And Ceo | 132,619 | 0 | 21 Dec, 2022 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 31 Mar, 2026 | David Shapiro | Stock option (right to buy) | A | 60,000 | $0.00 | 60,000 | D | A |
| 31 Mar, 2026 | David Shapiro | Stock option (right to buy) | A | 7,500 | $0.00 | 7,500 | D | A |
| 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 | Sean Jeffries | Stock option (right to buy) | A | 375,000 | $0.00 | 375,000 | 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 |
| 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 | John P. Schmid | 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 |
| 10 Jun, 2025 | Arsani William | 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 | 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 |
| 01 May, 2025 | Chris Storgard | Stock Option (right to buy) | A | 400,000 | $0.00 | 400,000 | D | A |