Transfer Agent Contact Information

Primary IR Contact:
Karla Kimrey
Vice President of Investor Relations
Phone: 720.566.2932
E-mail: karla.kimrey@cldpk.com

Transfer Agent:
Cloud Peak Energy's stock transfer agent is Computershare. Computershare can be reached at:

By Mail:
Computershare Investor Services
P.O. Box 43078
Providence, RI 02940-3078
United States of America

By Overnight Delivery:
Computershare Investor Services
250 Royall Street
Canton, MA 02021
United States of America

Corporate Website:
www-us.computershare.com

Investor Contacts

Primary IR Contact