SAN ANTONIO - April 2, 2013 - Tesoro Corporation (NYSE:TSO) announced today that it plans to release its earnings for the first quarter 2013 after the market closes on Wednesday, May 1, 2013.  The Company will broadcast, live, its conference call with analysts regarding first quarter results and other business matters on Thursday, May 2, 2013 at 7:30 a.m. CDT.  Interested parties may listen to the live conference call over the Internet by logging on to http://www.tsocorp.com.

Tesoro Corporation, a Fortune 150 company, is an independent refiner and marketer of petroleum products. Tesoro, through its subsidiaries, operates seven refineries in the western United States with a combined capacity of approximately 675,000 barrels per day. Tesoro's retail-marketing system includes nearly 1,400 branded retail stations, of which nearly 595 are company operated under the Tesoro®, Shell® and USA GasolineTM brands.

Contact:
Investors:
Louie Rubiola, Director, Investor Relations, (210) 626-4355

Media:
Tesoro Media Relations, Media@tsocorp.com, (210) 626-7702


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