UNDERWRITING AGREEMENT DYNE THERAPEUTICS, INC. 17,150,000 Shares of Common Stock, par value $0.0001 per share Underwriting AgreementUnderwriting Agreement • January 5th, 2024 • Dyne Therapeutics, Inc. • Pharmaceutical preparations • New York
Dyne Therapeutics, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to the several underwriters listed in Schedule 1 hereto (the “Underwriters”), for whom you are acting as representatives (the “Representatives”), an aggregate of 17,150,000 shares of common stock, par value $0.0001 per share (the “Common Stock”), of the Company (the “Underwritten Shares”) and, at the option of the Underwriters, up to an additional 2,572,500 shares of Common Stock of the Company (the “Option Shares”). The Underwritten Shares and the Option Shares are herein referred to as the “Shares”. The shares of Common Stock of the Company to be outstanding after giving effect to the sale of the Shares are referred to herein as the “Stock”.
