DYN

- Company's third program to enter clinical development leveraging FORCE platform with the goal of delivering functional improvement in rare neuromuscular disease -

WALTHAM, Mass., July 21, 2026 (GLOBE NEWSWIRE) -- Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today announced the pricing of an upsized underwritten public offering of 18,300,000 shares of its common stock at a public offering price of $20.50 per share. The gross proceeds to Dyne from the offering, before deducting underwriting discounts and commissions and offering expenses payable by Dyne, are expected to be $375,150,000. All shares in the offering are being sold by Dyne. The offering is expected to close on or about July 23, 2026, subject to customary closing conditions. In addition, Dyne has granted the underwriters a 30-day option to purchase up to an additional 2,745,000 shares of its common stock at the public offering price, less the underwriting discounts and commissions.

WALTHAM, Mass., July 21, 2026 (GLOBE NEWSWIRE) -- Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today announced that it has commenced an underwritten public offering of $300,000,000 of shares of its common stock. Dyne also intends to grant the underwriters a 30-day option to purchase up to an additional $45,000,000 of shares of its common stock. All of the shares in the proposed offering are to be sold by Dyne.

Dyne gains momentum as FDA priority review for its lead DMD therapy and progress in its DM1 program strengthen confidence in its pipeline.

Dyne Therapeutics receives FDA Priority Review for z-rostudirsen in DMD, with a potential U.S. launch in Q1 2027. DYN demonstrates best-in-class dystrophin expression in registrational trials, targeting a $3.5bn market for exon 51 skipping DMD patients. Robust pipeline includes z-basivarsen for DM1, with pivotal data expected Q1 2027 and potential accelerated approval/launch in 2028.

- Priority Review granted; PDUFA target action date set for January 21, 2027 - - Submission for Accelerated Approval based on dystrophin as a surrogate endpoint - - In the registrational expansion cohort of the DELIVER trial, treatment with z-rostudirsen once every 4 weeks resulted in a robust and statistically significant increase in dystrophin production with functional improvement observed across multiple clinical endpoints and a favorable safety profile 1  - WALTHAM, Mass., July 20, 2026 (GLOBE NEWSWIRE) -- Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today announced that the U.S. Food and Drug Administration (FDA) has accepted for review the Biologics License Application (BLA) for zeleciment rostudirsen (z-rostudirsen, also known as DYNE-251) for the treatment of individuals with Duchenne muscular dystrophy (DMD) amenable to exon 51 skipping.

After a sweeping semi-annual rebalance, the biotech index underlying the ALPS Medical Breakthroughs ETF (SBIO) gained over 10% in just six trading days beginning June 18. Key Takeaways: SBIO's underlying index gained 10.01% in six trading days following its June 18 semi-annual rebalance.

WALTHAM, Mass., June 22, 2026 (GLOBE NEWSWIRE) -- Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today announced the appointment of Barry Greene to its Board of Directors. Mr. Greene brings more than three decades of biopharmaceutical industry experience and a track record of building and scaling innovative companies from development through commercialization across rare diseases, neuroscience, and oncology.

WALTHAM, Mass., June 18, 2026 (GLOBE NEWSWIRE) -- Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today announced that it has granted inducement equity awards to 6 newly hired employees. The awards were made as an inducement material to the newly hired employees' acceptance of employment with Dyne in accordance with Nasdaq Listing Rule 5635(c)(4).

- Up to $125 million in additional borrowing capacity provides further strategic flexibility - - $50 million of additional capacity funded at amendment closing - WALTHAM, Mass., June 17, 2026 (GLOBE NEWSWIRE) --  Dyne Therapeutics, Inc. (Nasdaq: DYN), a clinical-stage company focused on delivering functional improvement for people living with genetically driven neuromuscular diseases, today announced that it has entered into an amendment to its non-dilutive senior secured term loan facility with Hercules Capital, Inc. (NYSE: HTGC), a leader in customized debt financing for companies in the life sciences and technology-related markets.