Viridian Therapeutics Announces Closing of Public Offering of Shares of Common Stock and Preferred Stock and Exercise in Full of the Underwriters' Option to Purchase Additional Shares

Viridian Therapeutics, Inc. (NASDAQ: VRDN), a biopharmaceutical company advancing new treatments for patients suffering from serious diseases but underserved by today's therapies, today announced the closing of an underwritten public offering of 7,344,543 shares of common stock, which includes the exercise in full by the underwriters of their option to purchase up to 1,159,089 additional shares of common stock, at a public offering price of $11.00 per share and 23,126 shares of series B preferred stock (the “Series B Preferred”) at a public offering price of $733.37 per share, which are convertible into approximately 1,541,810 shares of common stock, subject to beneficial ownership conversion limits. The gross proceeds of the offering, before deducting underwriting discounts and commissions and other offering expenses payable by Viridian, were approximately $97.7 million.

All of the shares sold in the underwritten public offering were offered by Viridian. Viridian intends to use the proceeds from the underwritten public offering of its shares to advance the development of its VRDN-001 and VRDN-002 programs and the preclinical development of its VRDN-004 and VRDN-005 programs, as well as for working capital and general corporate purposes.

Jefferies, SVB Leerink and Evercore ISI acted as joint book-running managers for the offering.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission (SEC) and became effective on April 14, 2020. A final prospectus supplement relating to and describing the terms of the offering was filed with the SEC on September 22, 2021. The securities described above have not been qualified under any state blue sky laws. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction. The offering was made only by means of a prospectus, copies of which may be obtained at the SEC’s website at www.sec.gov, or by request to Jefferies LLC (Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, 2nd Floor, New York, New York 10022; telephone: 877-821-7388; email: [email protected]), SVB Leerink LLC (Attention: Syndicate Department, 53 State Street, 40th Floor, Boston, MA 02109; telephone: 800-808-7525, ext. 6105; email: [email protected]), or Evercore Group L.L.C. (Attention: Equity Capital Markets, 55 East 52nd Street, 35th Floor, New York, New York 10055; telephone: 888-474-0200; email: [email protected]).

About Viridian Therapeutics, Inc.

Viridian Therapeutics is a biotechnology company advancing new treatments for patients suffering from serious diseases but underserved by today’s therapies. Viridian’s most advanced program, VRDN-001, is a differentiated monoclonal antibody targeting insulin-like growth factor-1 receptor (IGF-1R), a clinically and commercially validated target for the treatment of thyroid eye disease (TED), a debilitating auto-immune disease that causes inflammation and fibrosis within the orbit of the eye which can cause double vision, pain, and potential blindness. Patients with severe disease often require multiple remedial surgeries to the orbit, eye muscles and eyelids. Viridian is based in Waltham, Massachusetts.

Viridian Contacts:

Investors: Dan Ferry LifeSci Advisors 617-430-7576 [email protected]

Media: Darby Pearson Verge Scientific Communications 703-587-0831 [email protected]

Source: Viridian Therapeutics, Inc.