8-K

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): May 24, 2023

Dyne Therapeutics, Inc.

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code: (781) 786-8230

Not applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On May 24, 2023, Dr. Lawrence Klein notified Dyne Therapeutics, Inc. (the “Company”) of his decision to resign as a member of the Board of Directors of the Company, effective immediately. Dr. Klein informed the Company that his resignation was not related to any disagreement with the Company on any matter relating to its operations, policies or practices.

Item 5.07 Submission of Matters to a Vote of Security Holders.

The Company held its Annual Meeting of Stockholders on May 24, 2023. The following is a summary of the matters voted on at that meeting.

a) The stockholders of the Company elected Joshua Brumm, David Lubner and Jason Rhodes as Class III directors, each to serve for a three-year term expiring at the 2026 annual meeting of stockholders and until his respective successor has been duly elected and qualified. The results of the stockholders’ vote with respect to such matter were as follows:

b) The stockholders of the Company ratified the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2023. The results of the stockholders’ vote with respect to such matter were as follows:

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.