in the Company's Proxy Statement relating to that meeting. Stockholders wishing to submit proposals to be
presented directly at the Annual Meeting instead of for inclusion in next year's proxy statement must follow the
submission criteria and deadlines set forth in our Bylaws. To be timely in connection with an annual meeting, a
stockholder proposal with respect to a nomination for director, a proposal to amend or supplement the certificate
of incorporation, a proposal to amend the Bylaws or a proposal to remove a director must be received by the
Company at its principal executive offices not before November 24, 2012 or after February 22, 2013. With
respect to other stockholder proposals, management will be able to vote proxies in its discretion without advising
stockholders in the 2013 proxy statement about the nature of the matter and how management intends to vote if
notice of the proposal is not received by the Company at its principal executive offices before March 9, 2013.
Richardson, Texas 75080, Attn: Investor Relations. The Annual Report on Form 10-K is also available at
General Counsel and Secretary
EXPECT TO ATTEND THE MEETING AND WISH THEIR STOCK TO BE VOTED ARE URGED TO
VOTE BY INTERNET PHONE OR MAIL AS DESCRIBED IN THE PROXY CARD.