SHAREHOLDER ALERT: Rigrodsky & Long, P.A. Announces Investigation of Andeavor Buyout

Rigrodsky & Long, P.A.:

• Do you own shares of Andeavor (NYSE: ANDV)?
• Did you purchase any of your shares prior to April 30, 2018?
• Do you think the proposed buyout is fair?
• Do you want to discuss your rights?

Rigrodsky & Long, P.A. announces that it is investigating potential legal claims against the board of directors of Andeavor ("Andeavor" or the "Company") ANDV regarding possible breaches of fiduciary duties and other violations of law related to the Company's entry into an agreement to be acquired by Marathon Petroleum Corp. ("Marathon") MPC in a transaction valued at approximately $23.3 billion. Under the terms of the agreement, shareholders of Andeavor will have the option to choose 1.87 shares of MPC stock, or $152.27 in cash subject to a proration mechanism that will result in 15 percent of ANDV`s fully diluted shares receiving cash consideration.

If you own common stock of Andeavor and purchased any shares before April 30, 2018, if you would like to learn more about this investigation, or if you have any questions concerning this announcement or your rights or interests, please contact Seth D. Rigrodsky or Gina M. Serra at Rigrodsky & Long, P.A., 300 Delaware Avenue, Suite 1220, Wilmington, Delaware 19801, by telephone at (888) 969-4242, or by e-mail at info@rl-legal.com.

Rigrodsky & Long, P.A., with offices in Wilmington, Delaware, Garden City, New York, and San Francisco, California, has recovered hundreds of millions of dollars on behalf of investors and achieved substantial corporate governance reforms in numerous cases nationwide, including federal securities fraud actions, shareholder class actions, and shareholder derivative actions.

Attorney advertising. Prior results do not guarantee a similar outcome.

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