Dyne 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 |
|---|---|---|---|---|---|---|---|
| Cox John | CEO & President | Sale | 2,662 | $20.72 | $55,157 | 196,877 | Dec 5, 2025 |
| Kerr Douglas | Chief Medical Officer | Sale | 880 | $20.72 | $18,234 | 87,510 | Dec 5, 2025 |
| Friedl-Naderer Johanna | Chief Commercial Officer | Sale | 144 | $20.72 | $2,984 | 94,729 | Dec 5, 2025 |
| Cox John | CEO & President | Sale | 2,640 | $13.41 | $35,402 | 199,539 | Sep 5, 2025 |
| Friedl-Naderer Johanna | Chief Commercial Officer | Sale | 144 | $13.41 | $1,931 | 94,873 | Sep 4, 2025 |
| Kerr Douglas | Chief Medical Officer | Sale | 873 | $13.41 | $11,707 | 88,390 | Sep 4, 2025 |
| Cox John | CEO & President | Gift | 10,000 | — | — | 202,179 | Jul 14, 2025 |
| Cox John | CEO & President | Sale | 4,060 | $13.35 | $54,201 | 142,179 | Jun 5, 2025 |
| Kerr Douglas | Chief Medical Officer | Sale | 1,342 | $13.35 | $17,916 | 92,815 | Jun 5, 2025 |
| Friedl-Naderer Johanna | Chief Commercial Officer | Sale | 146 | $13.35 | $1,949 | 95,911 | Jun 5, 2025 |
| Lucera Erick | Chief Financial Officer | Award / Grant | 66,100 | — | — | 66,100 | Mar 31, 2025 |
| Friedl-Naderer Johanna | Chief Commercial Officer | Sale | 143 | $12.12 | $1,733 | 96,057 | Mar 13, 2025 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 1,343 | $11.38 | $15,283 | 122,330 | Mar 11, 2025 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 2,153 | $11.38 | $24,501 | 195,840 | Mar 11, 2025 |
| Kerr Douglas | Chief Medical Officer | Sale | 1,343 | $11.83 | $15,888 | 94,157 | Mar 5, 2025 |
| Cox John | CEO & President | Sale | 4,061 | $11.83 | $48,042 | 146,239 | Mar 5, 2025 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 917 | $11.83 | $10,848 | 123,673 | Mar 5, 2025 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 1,094 | $11.83 | $12,942 | 197,993 | Mar 5, 2025 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 2,598 | $13.95 | $36,242 | 199,087 | Feb 18, 2025 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 2,488 | $13.95 | $34,708 | 124,590 | Feb 18, 2025 |
| Rhodes Jason P | — | Award / Grant | 1,111,111 | $13.50 | $14,999,999 | 1,958,427 | Jan 27, 2025 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 2,334 | $28.12 | $65,632 | 201,685 | Dec 11, 2024 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 1,455 | $28.12 | $40,915 | 127,078 | Dec 11, 2024 |
| Kersten Dirk | — | Sale | 34,437 | $29.18 | $1,004,872 | 5,400,545 | Dec 6, 2024 |
| Kersten Dirk | — | Sale | 135,039 | $29.39 | $3,968,796 | 5,540,463 | Dec 5, 2024 |
| Friedl-Naderer Johanna | Chief Commercial Officer | Award / Grant | 37,800 | — | — | 96,200 | Dec 4, 2024 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Award / Grant | 32,700 | — | — | 128,533 | Dec 4, 2024 |
| Kerr Douglas | Chief Medical Officer | Award / Grant | 48,000 | — | — | 95,500 | Dec 4, 2024 |
| Cox John | CEO & President | Award / Grant | 145,300 | — | — | 150,300 | Dec 4, 2024 |
| Beskrovnaya Oxana | Chief Scientific Officer | Award / Grant | 27,400 | — | — | 204,019 | Dec 4, 2024 |
| Kersten Dirk | — | Sale | 79,973 | $29.66 | $2,371,999 | 5,706,462 | Dec 2, 2024 |
| Incerti Carlo | — | Sale | 16,500 | $28.73 | $474,045 | — | Nov 18, 2024 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 2,735 | $28.20 | $77,127 | 95,833 | Nov 18, 2024 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 2,856 | $28.20 | $80,539 | 137,519 | Nov 18, 2024 |
| Rhodes Jason P | — | Sale | 72 | $33.10 | $2,383 | 847,316 | Nov 14, 2024 |
| Kersten Dirk | — | Sale | 8,929 | $32.82 | $293,050 | 5,786,435 | Nov 13, 2024 |
| Kersten Dirk | — | Sale | 13,414 | $35.16 | $471,636 | 73,225 | Oct 21, 2024 |
| Kersten Dirk | — | Sale | 23,671 | $35.35 | $836,770 | 99,652 | Oct 17, 2024 |
| Kersten Dirk | — | Sale | 5,441 | $35.13 | $191,142 | 123,323 | Oct 3, 2024 |
| Kersten Dirk | — | Sale | 8,423 | $35.16 | $296,153 | 150,282 | Oct 2, 2024 |
| Kersten Dirk | — | Sale | 29,007 | $35.47 | $1,028,878 | 160,640 | Sep 30, 2024 |
| Kersten Dirk | — | Sale | 1,260 | $35.29 | $44,465 | 189,679 | Sep 25, 2024 |
| Kersten Dirk | — | Sale | 4,610 | $36.33 | $167,481 | 193,296 | Sep 23, 2024 |
| Kersten Dirk | — | Sale | 1,554 | $35.03 | $54,437 | 392,277 | Sep 19, 2024 |
| HIGH SUSANNA GATTI | Chief Operating Officer | Sale | 4,636 | $34.41 | $159,525 | 131,636 | Sep 18, 2024 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 1,390 | $34.55 | $48,024 | 98,568 | Sep 18, 2024 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 2,339 | $34.55 | $80,812 | 140,375 | Sep 18, 2024 |
| Kersten Dirk | — | Sale | 1,320 | $35.04 | $46,253 | 397,103 | Sep 17, 2024 |
| Beskrovnaya Oxana | Chief Scientific Officer | Sale | 2,161 | $31.89 | $68,914 | 142,714 | Sep 11, 2024 |
| Scalzo Richard William | SVP, Head of Finance & Admin. | Sale | 1,468 | $31.89 | $46,815 | 99,958 | Sep 11, 2024 |