Error! You must javascript enabled to use this form. Please enable Javascript in your browser. Tesoro Corporation (NYSE:TSO) Investor Notice: Investigation over Potential Wrongdoing An investigation on behalf of current long-term investors in shares of Tesoro Corporation (NYSE:TSO) was announced. View full press release Your Name: Your Email: Subject: Question: We respects your privacy, the information you entered above will not be used to send unsolicited email, and will not be rented or sold to a 3rd party. Your contact information will be shared with the recipient of this message - Privacy Policy Send