Shareholders can vote your shares by mailing your completed proxy card, by voting your shares over the telephone or via the Internet using the instructions provided with your proxy card, or by attending the meeting and voting your shares in person. If your shares are held of record by a broker, bank, or other nominee and you are the beneficial owner of those shares (your shares are said to be held in “Street Name”), you will need to obtain from the institution that holds your shares and bring to the meeting a proxy issued in your name, authorizing you to vote the shares.

Electronic Proxy Voting

If you wish to vote your Western Refining shares over the Internet, please follow the instructions below. Votes must be received by 5:00 p.m. EDT on June 3, 2013, which is one business day prior to the Annual Meeting.

• Registered Shareholders (if you hold your shares in your own name through our transfer agent)

If you are a registered shareholder, have your proxy card and the 12 digit control number available, click on the following link, and follow the instructions provided:

www.proxydocs.com/wnr

Registered shareholders can also vote your proxy by telephone. Using a touch-tone telephone, dial 1-866-390-5269. Please have your 12 digit control number from your proxy card available as you will be prompted to enter it.

• Beneficial Shareholders or “Street Name”(if you hold your shares through a broker, bank or other nominee)

If your broker allows for electronic voting, this information would have been included in your proxy package.