SOUTH SAN FRANCISCO, Calif., Jan. 02, 2018 (GLOBE NEWSWIRE) — Atara Biotherapeutics, Inc. (Nasdaq:ATRA), a leading off-the-shelf T-cell immunotherapy company developing novel treatments for patients with cancer, autoimmune and viral diseases, today announced that it has commenced an underwritten public offering of $100,000,000 of its shares of common stock. In addition, Atara Biotherapeutics expects to grant the underwriters a 30-day option to purchase up to an additional $15,000,000 of shares of its common stock at the public offering price, less the underwriting discounts and commissions. All of the shares in the offering will be sold by Atara Biotherapeutics. The offering is subject to market and other conditions, and there can be no assurances as to whether or when the offering may be completed, or as to the actual size or terms of the offering.
J.P. Morgan and Cowen are acting as joint book-running managers for the proposed offering.
The shares described above are being offered by Atara Biotherapeutics pursuant to a shelf registration statement on Form S-3, including a base prospectus, that was previously filed by Atara Biotherapeutics with the Securities and Exchange Commission (the “SEC”) on November 9, 2015 and became effective on November 23, 2015. A preliminary prospectus supplement and accompanying prospectus relating to the offering will be filed with the SEC and will be available on the SEC's website located at http://www.sec.gov. Copies of the preliminary prospectus supplement and the accompanying prospectus related to this offering, when available, may be obtained from J.P. Morgan, by mail at J. P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by telephone at 866-803-9204; or from Cowen, by mail at Cowen and Company, LLC, c/o Broadridge Financial Services, Attention: Prospectus Department, 1155 Long Island Avenue, Edgewood, NY 11717 or by telephone at 631-274-2806.The final terms of the offering will be disclosed in a final prospectus supplement to be filed with the SEC.
