X0306 4 2016-10-17 0001311596 Tobira Therapeutics, Inc. TBRA 0001425851 Pentwater Capital Management LP 614 DAVIS STREET EVANSTON IL 60201 true Common Stock, par value $0.001 per share 2016-10-17 4 P 0 4300 39.89 A 3707500 I By managed account Common Stock, par value $0.001 per share 2016-10-17 4 P 0 27400 40.1 A 3734900 I By managed account Common Stock, par value $0.001 per share 2016-10-18 5 P 0 8300 40.04 A 3743200 I By managed account The reporting person is the investment manager for PWCM Master Fund Ltd, an exempted company formed in the Cayman Islands, Pentwater Equity Opportunities Master Fund, Ltd., an exempted company formed in the Cayman Islands, Oceana Master Fund, Ltd., an exempted company formed in the Cayman Islands, Amundi Absolute Return Pentwater Fund Plc, a private fund formed in Ireland, Pentwater Event Driven Cayman Fund Limited, an exempted company formed in the Cayman Islands, Pentwater Merger Arbitrage Master Fund LTD, an exempted company formed in the Cayman Islands, and LMA SPC for and on behalf of MAP 98 Segregated Portfolio, a segregated portfolio company formed in the Cayman Islands, which directly own the shares. Neal Nenadovic 2016-10-19