Form 4: Dyne Therapeutics CEO Sells Shares
Insider Transaction (Form 4)
John Cox, CEO & President and a Director of Dyne Therapeutics, Inc., sold 4,986 shares of common stock on August 13, 2026 for $26.28 per share.
Summary
- Open-market sale: disposed of 4,986 Common Stock at $26.28 ($131,032) on August 13, 2026; holds 363,165 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $131,032 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
John Cox — Director, Officer (CEO & President)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-13 | Open-market sale | Common Stock | 4,986 | $26 | $131.0K | 363,165 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-13 | Open-market sale (4,986 shares) |
Keywords
insider transaction, Form 4, DYN, Dyne Therapeutics, Inc., bearish, John Cox
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