Viridian Therapeutics, Inc. (NASDAQ: VRDN), a biotechnology company focused on discovering and developing potential best-in-class medicines for serious and rare diseases, today announced that it has commenced an underwritten public offering of shares of its common stock and Series B preferred stock. All of the securities to be sold in the underwritten public offering are being offered by Viridian. In addition, Viridian intends to grant the underwriters a 30-day option to purchase additional shares of its common stock. Each share of Series B preferred stock will be convertible into 66.67 shares of common stock at the election of the holder, subject to beneficial ownership conversion limits applicable to the Series B preferred stock.

Viridian intends to use the proceeds from the proposed underwritten public offering of its shares of common stock and Series B preferred stock, together with its cash, cash equivalents and short-term investments, to further its clinical development programs, as well as for working capital and general corporate purposes.

Jefferies and Leerink Partners are acting as joint lead book-running managers for the proposed offering.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission (SEC) and became effective on September 9, 2022. A preliminary prospectus supplement and accompanying base prospectus relating to and describing the terms of the offering will be filed with the SEC. 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 can be 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, New York, New York 10022; telephone: 877-821-7388; email: Prospectus_Department@Jefferies.com) or Leerink Partners LLC, Attention: Syndicate Department, 53 State Street, 40th Floor, Boston, MA 02109, by telephone at (800) 808-7525, ext. 6105, or by email at syndicate@leerink.com.

About Viridian Therapeutics, Inc.

Viridian is a biopharmaceutical company focused on engineering and developing potential best-in-class medicines for patients with serious and rare diseases. Viridian’s expertise in antibody discovery and engineering enables it to develop differentiated therapeutic candidates for previously validated drug targets in commercially established disease areas.

Viridian is advancing multiple candidates in the clinic for the treatment of patients with thyroid eye disease (TED). The company is conducting two global Phase 3 clinical trials (THRIVE and THRIVE-2) to evaluate the safety and efficacy of VRDN-001 in patients with active and chronic TED. Viridian’s goal is to advance VRDN-001 as a best-in-class IV therapy followed by VRDN-003 as a first- and best-in-class subcutaneous therapy for the treatment of TED. In addition to its TED portfolio, Viridian is advancing a novel portfolio of neonatal Fc receptor (FcRn) inhibitors, VRDN-006 and VRDN-008, which has the potential to be developed in multiple autoimmune diseases.

Note Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements may be identified by the use of words such as, but not limited to, “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” or “would” or other similar terms or expressions that concern the company’s expectations, plans and intentions. Forward-looking statements include, without limitation, statements regarding the proposed underwritten public offering and the company’s expectations with respect to the use of the net proceeds from the proposed underwritten public offering. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based on the company’s current beliefs, expectations and assumptions. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. No representations or warranties (expressed or implied) are made about the accuracy of any such forward-looking statements. Such forward-looking statements are subject to a number of material risks and uncertainties including but not limited to: market conditions that may affect the timing, terms or conditions of the proposed underwritten public offering; the company’s successful completion of the proposed underwritten public offering; the satisfaction of customary closing conditions related to the proposed underwritten public offering; and other risks and uncertainties identified in the company’s filings with the SEC, including those risks set forth under the caption “Risk Factors” in the company’s Quarterly Report on Form 10-Q filed with the SEC on November 13, 2023 and other subsequent disclosure documents filed with the SEC. Any forward-looking statement speaks only as of the date on which it was made. Neither the company, nor its affiliates, advisors or representatives, undertake any obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. These forward-looking statements should not be relied upon as representing the company’s views as of any date subsequent to the date hereof.

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