Dyne Therapeutics Director Lubner David Charles Disposes of 53,625 Shares via Gift

This SEC Form 4 filing reports that David Charles Lubner, a director of Dyne Therapeutics, Inc., disposed of 53,625 shares of common stock on April 24, 2026, through a gift transaction (transaction code G). The shares were transferred at $0.00 per share, indicating a non-cash gift transfer. Following this transaction, Lubner no longer holds any shares of Dyne Therapeutics common stock. The filing was signed on April 28, 2026, by Ron Caponigro as Attorney-in-Fact for Lubner. The transaction was reported as a direct ownership disposition. This filing represents a significant reduction in the director's ownership position, bringing his holdings to zero shares.