John Cox, CEO & President at Dyne Therapeutics, Inc. (DYN), sold 4,986 shares at $26.28 ($131K) on 2026-08-13, disclosed to the SEC on 2026-08-17.
Scheduled sale ($131k) by CEO & President under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Nothing distinguishes this filing.
| Filing → |
| DYN | SELL | 2026-05-14 | $61K | — | Filing → |
| DYN | SELL | 2026-03-06 | $41K | — | Filing → |
| DYN | SELL | 2025-12-05 | $110K | — | Filing → |