Design Therapeutics, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| William Arsani | — | Sale | 345,000 | $5.25 | $1,811,250 | 2,655,000 | Aug 13, 2025 |
| Prasad Deepa | — | Sale | 3,806 | $6.27 | $23,864 | 20,000 | Dec 18, 2024 |
| William Arsani | — | Sale | 814,874 | $4.25 | $3,463,215 | — | Aug 9, 2024 |
| Schmid John P. | — | Purchase | 9,156 | $3.62 | $33,145 | 9,156 | Mar 25, 2024 |
| Berger Heather A. | — | Purchase | 1,300 | $3.74 | $4,862 | 1,300 | Mar 25, 2024 |
| LAPPE RODNEY W | — | Purchase | 21,000 | $2.35 | $49,350 | 133,024 | Sep 29, 2023 |
| Prasad Deepa | — | Purchase | 12,000 | $2.31 | $27,720 | 23,806 | Aug 29, 2023 |
| William Arsani | — | Purchase | 1,960,000 | $2.44 | $4,782,400 | 3,000,000 | Aug 28, 2023 |
| Siffert Joao MD | President and CEO | Purchase | 1,150 | $8.47 | $9,741 | 126,319 | Dec 20, 2022 |
| George Simeon | — | Purchase | 500,000 | $8.28 | $4,140,000 | 6,126,476 | Dec 19, 2022 |
| SR ONE CAPITAL PARTNERS I, LP | — | Purchase | 40,000 | $8.14 | $325,600 | 6,526,476 | Dec 19, 2022 |
| LAPPE RODNEY W | — | Purchase | 15,000 | $7.96 | $119,400 | 112,024 | Dec 9, 2022 |
| Xu Stella | — | Sale | 24,000 | $19.01 | $456,240 | 4,131,405 | Mar 22, 2022 |
| William Arsani | — | Purchase | 25,000 | $18.99 | $474,750 | 2,797,501 | Mar 21, 2022 |
| Prasad Deepa | — | Other | 11,806 | — | — | 11,806 | Mar 16, 2022 |
| William Arsani | — | Purchase | 40,000 | $15.45 | $618,000 | 2,772,501 | Aug 31, 2021 |
| Cormorant Asset Management, LP | — | C | 4,364,844 | — | — | 4,364,844 | Mar 30, 2021 |
| William Arsani | — | C | 814,874 | — | — | 2,032,501 | Mar 30, 2021 |
| Thacker Justin | Vice President, Finance | Purchase | 17,500 | $20.00 | $350,000 | 17,500 | Mar 30, 2021 |
| Shah Pratik | Executive Chairperson | Purchase | 25,000 | $20.00 | $500,000 | 25,000 | Mar 30, 2021 |
| LAPPE RODNEY W | — | Purchase | 5,000 | $20.00 | $100,000 | 97,024 | Mar 30, 2021 |
| George Simeon | — | C | 936,637 | — | — | 5,376,476 | Mar 30, 2021 |
| Xu Stella | — | C | 280,991 | — | — | 4,720,830 | Mar 30, 2021 |
| SR ONE CAPITAL MANAGEMENT, LLC | — | Purchase | 250,000 | $20.00 | $5,000,000 | 5,626,476 | Mar 30, 2021 |
| Quan Venture Fund II, L.P. | — | C | 280,991 | — | — | 4,720,830 | Mar 30, 2021 |
| Jeffries Sean | Chief Operating Officer | Purchase | 3,050 | $20.00 | $61,000 | 3,050 | Mar 30, 2021 |
| William Arsani | — | Purchase | 700,000 | $20.00 | $14,000,000 | 700,000 | Mar 30, 2021 |