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| . Proxy — SM Energy Company Electronic Delivery of Future Proxy Materials If you would like to reduce the costs incurred by us in mailing proxy materials, you can consent to receiving all future proxy statements, proxy cards and annual reports electronically via e-mail or the Internet. To sign up for electronic delivery, please follow the instructions on the front of this card to vote using the Internet and, when prompted, indicate that you agree to receive or access proxy materials electronically in future years. Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to be held on May 19, 2015. The Proxy Statement and our 2014 Annual Report on Form 10-K are available at: http://www.viewproxy.com/sm-energy/2015/. 1775 Sherman Street, Suite 1200 Denver, Colorado 80203 This proxy is solicited on behalf of the Board of Directors for the Annual Meeting of Stockholders to be held on May 19, 2015. The undersigned hereby appoints A. Wade Pursell, David W. Copeland, and James B. Lebeck, or any of them, each with the power to appoint his substitute, as proxies for the undersigned to vote all shares of SM Energy Company common stock which the undersigned is entitled to vote at the Annual Meeting of Stockholders to be held on May 19, 2015, and at any reconvened meeting after any adjournment thereof, as directed on the matters referred to on the reverse side and at their discretion on any other matters that may properly be presented at the meeting, including concerning any adjournment of the meeting. This proxy when properly executed will be voted in the manner directed by the undersigned stockholder. If this proxy is properly executed but no voting direction is given, this proxy will be voted “FOR” all director nominees in Proposal 1, and “FOR” Proposals 2 and 3. This proxy also confers discretionary authority to the proxies to vote on any other matters that may properly be presented at the meeting, including concerning any adjournment of the meeting. As of the date of the accompanying proxy statement, SM Energy Company’s management did not know of any other matters to be presented at the meeting. If any other matters are properly presented at the meeting, including concerning any adjournment of the meeting, this proxy will be voted in accordance with the recommendations of SM Energy Company’s management. C Non-Voting Items Change of Address — Please print new address below. qIF YOU HAVE NOT VOTED VIA THE INTERNET OR TELEPHONE, FOLD ALONG THE PERFORATION, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.q IF VOTING BY MAIL, YOU MUST COMPLETE SECTIONS A – C ON BOTH SIDES OF THIS CARD. + + 2015 Annual Meeting Admission Ticket 2015 Annual Meeting of SM Energy Company Stockholders May 19, 2015, at 3:30 p.m. Local Time J. D. Hershner Room of Wells Fargo Bank 1700 Lincoln Street Denver, Colorado Upon arrival, please present this admission ticket and photo identification at the registration desk. Attending and Voting in Person at the Annual Meeting: You should be prepared to present a valid form of photo identification, such as a driver’s license, state-issued ID card or passport along with the admission ticket portion of this proxy card. If you do not provide valid photo identification and otherwise comply with the procedures outlined above, you may not be admitted to the Annual Meeting. Directions to the Annual Meeting can be obtained by contacting our Corporate Secretary at (303) 861-8140. |