DYN insider trades & Congress trades
Dyne Therapeutics, Inc.: public insider filings and Congress disclosures, in one place.
Bourse has recorded 16 open-market insider transactions in Dyne Therapeutics, Inc. (DYN) (1 purchases with code P and 15 sales with code S), the most recent on October 2, 2026.
In the last 90 days: 1 purchase by 1 insider ($40K) and 15 sales by 5 ($65.7M).
Insider transactions
SEC Form 4, open-market purchases (P) and sales (S) only. Awards, option exercises and tax withholding are excluded. “After” shows the stock’s return over the month following the trade, where available.
| Date | Insider | Role | Type | Shares | Price | Value | After 1M |
|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | Posner Brian S | – | Buy | 2,500 | $16.00 | $40K | – |
| Sep 8, 2026 | Kerr Douglas | Chief Medical Officer | Sell | 1,290 | $18.88 | $24K | – |
| Sep 8, 2026 | Cox John | CEO & President | Sell | 5,658 | $18.88 | $107K | – |
| Sep 8, 2026 | Friedl-Naderer Johanna | Chief Commercial Officer | Sell | 185 | $18.88 | $3K | – |
| Sep 4, 2026 | Kerr Douglas | Head of R&D and CMO | Sell | 3,745 | $24.35 | $91K | −0.2% |
| Sep 4, 2026 | Friedl-Naderer Johanna | Chief Commercial Officer | Sell | 900 | $24.35 | $22K | −0.2% |
| Aug 14, 2026 | Rhodes Jason P | – | Sell | 1,359,674 | $25.00 | $34.0M | −0.3% |
| Aug 14, 2026 | Rhodes Jason P | – | Sell | 478,377 | $25.00 | $12.0M | −0.3% |
| Aug 14, 2026 | Rhodes Jason P | – | Sell | 322,465 | $25.00 | $8.06M | −0.3% |
| Aug 13, 2026 | Lucera Erick | Chief Financial Officer | Sell | 1,797 | $26.28 | $47K | −0.3% |
| Aug 13, 2026 | Kerr Douglas | Head of R&D and CMO | Sell | 1,556 | $26.28 | $41K | −0.3% |
| Aug 13, 2026 | Cox John | CEO & President | Sell | 4,986 | $26.28 | $131K | −0.3% |
| Aug 13, 2026 | Friedl-Naderer Johanna | Chief Commercial Officer | Sell | 226 | $26.28 | $6K | −0.3% |
| Aug 13, 2026 | Rhodes Jason P | – | Sell | 268,354 | $26.20 | $7.03M | −0.3% |
| Aug 13, 2026 | Rhodes Jason P | – | Sell | 94,415 | $26.20 | $2.47M | −0.3% |
| Aug 13, 2026 | Rhodes Jason P | – | Sell | 63,643 | $26.20 | $1.67M | −0.3% |
Data as of November 8, 2026. Public filings only. A purchase or sale by a politician or an insider does not by itself imply any wrongdoing.
New to these filings? Read how to read a Form 4, how Congress trades are disclosed and what insider cluster buying means. Sources and limits are on the Methodology page.
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