UNION PACIFIC CORP

We are using the Securities and Exchange Commission (SEC) rule that allows companies to furnish their proxy materials over the Internet. As a result, we are mailing a Notice of Internet Availability of Proxy Materials instead of a paper copy of the proxy materials. All shareholders receiving the notice will have the ability to access the proxy materials over the Internet and may request to receive a paper copy of the proxy materials by mail. Instructions on how to access the proxy materials over the Internet or to request a paper copy may be found in the Notice of Internet Availability of Proxy Materials. In addition, the notice contains information on how you may request access to proxy materials in printed form by mail or electronically on an ongoing basis.