Current Report · Items 2.02, 9.01 · 8-K

Dyne Therapeutics, Inc.

DYNNASDAQEQUITYCurrent

Results of Operations and Financial Condition

Filed Jul 29, 2026Accepted Jul 29, 2026, 4:35 PM EDTCIK 1818794Accession 0001193125-26-323940

Company context

Dyne Therapeutics is focused on delivering functional improvement for people living with genetically driven neuromuscular diseases. We are developing therapeutics that target muscle and the central nervous system (CNS) to address the root cause of disease. The company is advancing clinical programs for Duchenne muscular dystrophy (DMD) and myotonic dystrophy type 1 (DM1) as well as preclinical programs for facioscapulohumeral muscular dystrophy (FSHD), Pompe disease and multiple DMD mutations. At Dyne, we are on a mission to deliver functional improvement for individuals, families and communities. Learn more at https://www.dyne-tx.com/, and follow us on X, LinkedIn and Facebook.

Current securities

DYNNASDAQ · EQUITY · Current

Recent company filings

Disclosure sections

Items 2.02, 9.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 2.02Item 2.02 - Results of Operations

Item 2.02 Results of Operations and Financial Condition. On July 29, 2026, Dyne Therapeutics, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended June 30, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filling.

Filed exhibits (1)

EX-99.1 (by filename) dyn-ex99_1.htm

EX-99.1 2 dyn-ex99_1.htm EX-99.1 EX-99.1 Exhibit 99.1 Dyne Therapeutics Reports Second Quarter 2026 Financial Results and Recent Business Highlights - Biologics License Application (BLA) for z-rostudirsen in exon 51 DMD accepted for review by FDA; Priority Review granted; PDUFA target action date set for January 21, 2027 - - Completed enrollment of 71 participants in registrational expansion cohort of Phase 1/2 ACHIEVE trial of z-basivarsen in DM1; topline data planned for Q1 2027 - - Investigational New Drug (IND) Application cleared by FDA for DYNE-302 in FSHD - - Expected cash runway into Q2 2028 - WALTHAM, Mass., July 29, 2026 - Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today reported financial results for the second quarter of 2026 and recent business highlights. “We continue to make significant progress as we execute on our goal of delivering functional improvement for people living with genetically driven neuromuscular diseases,” said John Cox, president and chief executive officer of Dyne. “The FDA’s acceptance of our BLA for z-ros…

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