Tesoro Corporation (NYSE:TSO) announced today that it will release earnings for the third quarter 2010 after the market closes on Thursday, November 4, 2010. The Company will broadcast, live, its conference call with analysts regarding third quarter 2010 results and other business matters on Friday, November 5, 2010 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, or via phone by dialing (877) 485-3104 (international dial-in: (201) 689-8579), event ID 00358345. A telephone replay of the call will be available for one week, and may be accessed via phone by dialing (877) 660-6853 (international replay: (201) 612-7415), then entering passcode 358345 and access code 356.

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 665,000 barrels per day. Tesoro's retail-marketing system includes over 875 branded retail stations, of which over 380 are company operated under the Tesoro®, Shell®, Mirastar® and USA Gasoline™ brands.

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