Trade Summary

Yesterday, Cox John, serving as CEO, Pres at Dyne Therapeutics, Inc. (DYN), sold 3,311 shares at $18.36 per share, for a total transaction value of $60,790.00. Following this transaction, Cox John now holds 442,834 shares of DYN.

This sale represents a 1.00% decrease in Cox John's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Wednesday, May 13, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, May 14, 2026 at 4:02 PM ET, 1 day after the trade was made.

Dyne Therapeutics, Inc. operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.