Harpoon announces proposed public offering in the United States

28th December 2018

LONDON, 28 December 2018: Arix Bioscience plc (LSE:ARIX) ("Arix"), a global healthcare and life science company supporting medical innovation, today notes that its portfolio company Harpoon Therapeutics, Inc. (“Harpoon”) has filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission (the “SEC”) relating to a proposed underwritten initial public offering in the United States of shares of Harpoon’s common stock.

A registration statement relating to these securities has been filed with the SEC, but has not yet become effective. These securities may not be sold, nor may offers to buy be accepted, prior to the time the registration statement becomes effective. The registration statement can be accessed through the SEC’s EDGAR database.

This announcement does not constitute an offer to sell or the solicitation of an offer to buy securities, and shall not constitute an offer, solicitation or sale in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of that state or jurisdiction.

These securities are to be offered only by means of a prospectus. When available, copies of the preliminary prospectus can be obtained from: Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone at (800) 831-9146 ; or Leerink Partners LLC, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110, by telephone at (800) 808-7525, ext. 6132, or by e-mail at syndicate@leerink.com. For the avoidance of doubt, such prospectus will not constitute a "prospectus" for the purposes of Directive 2003/71/EC (and amendments thereto, including Directive 2010/73/EU, to the extent implemented in each relevant EU member state) and will not have been reviewed by any competent authority in any EU member state.