BRIEF-Tetraphase Receives Proposal from La Jolla, Determination of Superior Offer, Notice to Melinta

June 22 (Reuters) - Tetraphase Pharmaceuticals Inc :
   * TETRAPHASE ANNOUNCES RECEIPT OF PROPOSAL FROM LA JOLLA PHARMACEUTICAL COMPANY, DETERMINATION OF SUPERIOR OFFER AND NOTICE TO MELINTA
   * TETRAPHASE - JUNE 19, BOARD RECEIVED AN UNSOLICITED PROPOSAL FROM LA JOLLA TO ACQUIRE CO FOR $43.0 MILLION IN CASH, PLUS AN ADDITIONAL AGGREGATE AMOUNT
   * TETRAPHASE PHARMACEUTICALS - ON JUNE 21, 2020 BOARD DETERMINED THAT LA JOLLA PROPOSAL IS A "SUPERIOR OFFER" TO THE MELINTA MERGER AGREEMENT
   * TETRAPHASE - IF LA JOLLA PROPOSAL CONTINUES TO CONSTITUTE A SUPERIOR OFFER THROUGH JUNE 26, BOARD TO CONSIDER TERMINATING MELINTA MERGER AGREEMENT

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