Press Release Details

Magenta Therapeutics Announces Closing of Public Offering, Including Full Exercise of Underwriters’ Option to Purchase Additional Shares

June 30, 2020

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Jun. 30, 2020-- Magenta Therapeutics, Inc. (Nasdaq: MGTA), a clinical-stage biotechnology company developing novel medicines to bring the curative power of stem cell transplant to more patients, announced the closing of its previously announced underwritten public offering of 8,625,000 shares of its common stock, including the exercise in full by the underwriters of their option to purchase an additional 1,125,000 shares, at a price to the public of $8.00 per share. The total gross proceeds from the offering, before deducting underwriting discounts and commissions and estimated offering expenses, are expected to be $69.0 million.

Goldman Sachs & Co. LLC and Cowen acted as joint bookrunning managers for the offering. Wedbush PacGrow acted as lead manager for the offering.

Magenta intends to use the net proceeds from this offering to advance its clinical and earlier stage programs and for research and development, working capital and general corporate purposes.

The securities described were offered pursuant to a shelf registration statement on Form S-3 (File No. 333-233127), including a base prospectus. A preliminary prospectus supplement and accompanying prospectus relating to and describing the terms of the offering was filed with the U.S. Securities and Exchange Commission (the “SEC”) on June 24, 2020. The final prospectus supplement relating to the offering was filed with the SEC on June 25, 2020. Copies of the final prospectus supplement and the accompanying prospectus relating to these shares can be obtained from: Goldman Sachs & Co. LLC, Attn: Prospectus Department, 200 West Street, New York, NY 10282, telephone: 866-471-2526, facsimile: 212-902-9316, e-mail: prospectus-ny@ny.email.gs.com; or Cowen and Company, LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, Attn: Prospectus Department, by telephone at (833) 297-2926, or by email at PostSaleManualRequests@broadridge.com.

Important Information

This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any offer or 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.

About Magenta Therapeutics

Headquartered in Cambridge, Mass., Magenta Therapeutics is a clinical-stage biotechnology company developing novel medicines for patients with autoimmune diseases, blood cancers and genetic diseases. By creating a platform focused on critical areas of unmet need, Magenta Therapeutics aims to develop an integrated approach to allow more patients to receive one-time, curative therapies by making the process more effective, safer and easier.

Forward-Looking Statements

This press release contains forward-looking statements that are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The use of words such as “may,” “will,” “could,” “should,” “expects,” “intends,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “projects,” “seeks,” “endeavor,” “potential,” “continue” or the negative of such words or other similar expressions can be used to identify forward-looking statements. Any forward-looking statements in this press release, such as statements regarding the anticipated amount and use of proceeds, are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, uncertainties related to market conditions and the completion of the public offering on the anticipated terms, or at all. These and other risks and uncertainties are described in greater detail in the section entitled “Risk Factors” in Magenta’s Annual Report on Form 10-K filed on March 3, 2020, as updated by its most recent Quarterly Report on Form 10-Q and its other filings made with the SEC from time to time, including those contained or incorporated by reference in the preliminary prospectus supplement and accompanying prospectus related to the public offering filed with the SEC. Although Magenta's forward-looking statements reflect the good faith judgment of its management, these statements are based only on facts and factors currently known by Magenta. As a result, you are cautioned not to rely on these forward-looking statements. Any forward-looking statement made in this press release speaks only as of the date on which it is made. Magenta undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future developments or otherwise.

Magenta Therapeutics:
Manisha Pai, Vice President, Communications & Investor Relations
617-510-9193
mpai@magentatx.com

Lyndsey Scull, Director, Corporate Communications
202-213-7086

Source: Magenta Therapeutics, Inc.

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