Item 1.01. Entry Into a Material Definitive Agreement.
On June 30, 2025, Dyne Therapeutics, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Morgan Stanley & Co. LLC, Jefferies LLC, Stifel, Nicolaus & Company, Incorporated and Guggenheim Securities, LLC, as representatives of the several underwriters named therein (the “Underwriters”), relating to an underwritten public offering (the “Offering”) of 24,242,425 shares (the “Underwritten Shares”) of the Company’s common stock, par value $0.0001 per share (the “Common Stock”). All of the Underwritten Shares are being sold by the Company. The public offering price of the Underwritten Shares is $8.25 per share, and the Underwriters have agreed to purchase the Underwritten Shares from the Company pursuant to the Underwriting Agreement at a price of $7.7550 per share. Under the terms of the Underwriting Agreement, the Company also granted the Underwriters an option, exercisable for 30 days from the date of the Underwriting Agreement, to purchase up to an additional 3,636,363 shares of Common Stock (the “Option Shares” and together with the Underwritten Shares, the “Shares”) at the public offering price less the underwriting discounts and commissions.
The Company estimates that the net proceeds from the Offering will be approximately $187.0 million, or approximately $215.2 million if the Underwriters exercise in full their option to purchase the Option Shares, in each case, after deducting underwriting discounts and commissions and estimated offering expenses.
The Shares will be issued pursuant to a prospectus supplement dated June 30, 2025, and an accompanying base prospectus that form a part of the registration statement on Form S-3 that the Company filed with the Securities and Exchange Commission (the “SEC”) on March 5, 2024 (File No. 333-277655), which was automatically effective upon filing. The closing of the Offering is expected to take place on or about July 2, 2025, subject to the satisfaction of customary closing conditions.
The Underwriting Agreement contains customary representations, warranties, covenants and agreements by the Company, customary conditions to closing, indemnification obligations of the Company and the Underwriters, including for liabilities under the Securities Act of 1933, other obligations of the parties and termination provisions. The representations, warranties and covenants contained in the Underwriting Agreement were made only for purposes of such agreement and as of specific dates, were solely for the benefit of the parties to such agreement, and may be subject to limitations agreed upon by the contracting parties.
A copy of the Underwriting Agreement is attached as Exhibit 1.1 hereto and is incorporated herein by reference. The foregoing description of the terms of the Underwriting Agreement is qualified in its entirety by reference to such exhibit.
A copy of the legal opinion and consent of Wilmer Cutler Pickering Hale and Dorr LLP relating to the Shares is attached as Exhibit 5.1 hereto.
Item 8.01. Other Events.
Pricing of Public Offering
The full text of the press release issued on June 30, 2025, announcing the pricing of the Offering is attached as Exhibit 99.1 hereto and is incorporated herein by reference.
Cash Runway
The Company believes that the net proceeds from the Offering, together with its existing cash, cash equivalents and marketable securities, including the initial term loan tranche of $100.0 million that the Company borrowed under its Loan and Security Agreement (the “Loan Agreement”) with Hercules Capital, Inc. (“Hercules”) in June 2025, will enable the Company to fund its operating expenses, debt service obligations and capital expenditure requirements into the third quarter of 2027. The Company has based its estimates on assumptions that may prove to be wrong, and the Company could use its available capital resources sooner than it currently expects. This estimate does not give effect to any additional funding tranches the Company may obtain access to under the Loan Agreement with Hercules, subject to the achievement of specified clinical, regulatory and commercial milestones, and does not give effect to any revenue the Company may generate on commercial sales of any products for which the Company obtains regulatory approval.
