TETRAPHASE PHARMACEUTICALS ANNOUNCES COMPLETION OF $8 MILLION REGISTERED DIRECT OFFERING PRICED AT-THE-MARKET

On November 1, 2019 Tetraphase Pharmaceuticals, Inc. (Nasdaq:TTPH), a biopharmaceutical company focused on commercializing its novel tetracycline XERAVA (eravacycline for injection) to treat serious and life-threatening infections, reported the completion of its previously announced registered direct offering to a healthcare-focused institutional investor priced at-the-market, of (i) 300,000 shares of common stock and accompanying warrants to purchase an aggregate of 300,000 shares of common stock, and (ii) pre-funded warrants to purchase up to an aggregate of 1,830,493 shares of common stock and accompanying warrants to purchase an aggregate of 1,830,493 shares of common stock (Press release, Tetraphase, NOV 1, 2019, View Source [SID1234550199]). Each share of common stock and accompanying common stock warrant were sold together at a combined price of $3.755, and each pre-funded warrant and accompanying common stock warrant were sold together at a combined price of $3.745. Each pre-funded warrant has an exercise price of $0.01 per share, is exercisable immediately and is exercisable until all of the pre-funded warrants are exercised in full. Each common stock warrant has an exercise price of $3.62 per share, is exercisable immediately and expires five years from the date of issuance.

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The net proceeds to the Company from the offering, after deducting the placement agent’s fees and other estimated offering expenses payable by the Company, are approximately $7.0 million. The Company intends to use the net proceeds from the offering for the commercialization of XERAVA as well as for working capital and other general corporate purposes.

H.C. Wainwright & Co. acted as the exclusive placement agent for the offering.

A shelf registration statement relating to the securities offered in the registered direct offering described above was filed with the Securities and Exchange Commission (SEC) on January 25, 2018 and declared effective by the SEC on February 5, 2018. The offering will be made only by means of the written prospectus and prospectus supplement that form a part of the registration statement. A final prospectus supplement and the accompanying prospectus related to the offering has been filed with the SEC and may be obtained, for free by visiting EDGAR on the SEC website at www.sec.gov. Electronic copies of the final prospectus supplement and the accompanying prospectus relating to the offering may also be obtained by contacting H.C. Wainwright & Co., LLC, 430 Park Avenue, 3rd Floor, New York, NY 10022, or by calling (646) 975-6996 or by emailing [email protected].

This press release shall not constitute an offer to sell or the solicitation of an offer to buy the securities being offered, nor shall there be any sale of the securities being offered 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.