UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 10, 2025 Dyne Therapeutics, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-39509 36-4883909 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.) 1560 Trapelo Road Waltham, Massachusetts 02451 (Address of Principa ...