0001818794 2026-07-22 2026-07-22 0001818794 1 2026-07-22 2026-07-22 iso4217:USD pure shares S-3 424B5 EX-FILING FEES 333-277655 0001818794 Dyne Therapeutics, Inc. N/A N/A S-3 Dyne Therapeutics, Inc. false Equity Common Stock, par value $0.0001 per share true 21045000 20.50 431422500.00 0.0001381 59579.45 431422500.00 59579.45 0.00 0.00 59579.45 a) Includes 2,745,000 shares of common stock the underwriters have an option to purchase. b) Calculated in accordance with Rule 457(r) under the Securities Act of 1933, as amended (the "Securities Act"). The fee payable in connection with the offering pursuant to this prospectus supplement has been paid in accordance with Rule 456(b) under the Securities Act and represents deferred payment of the registration fees in connection with the Registrant's Registration Statement on Form S-3 (Registration No. 333-277655) (the "Registration Statement"). This "Calculation of Filing Fee Tables" shall be deemed to update the "Calculation of Filing Fee Tables" filed as Exhibit 107 to the Registration Statement in accordance with Rules 456(b) and 457(r) under the Securities Act. 431422500.00 true