YOUR VOTE IS IMPORTANT!
If you have voting rights you may use www.proxyvote.com to cast your vote until 11:59 P.M. EDT on May 21, 2024, for shares held by registered holders directly and 11:59 p.m. EDT on May 19, 2024, for shares held in the Marathon Oil Company Thrift Plan. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form.