Cloud Peak Energy Inc. Announces Pricing of a Secondary Offering of Common Stock on Behalf of Selling Shareholders

Cloud Peak Energy Inc. (NYSE: CLD) announced today the pricing of its underwritten secondary public offering of 25,600,000 shares of its common stock at a price of $19.50 per share. The shares are being sold by Rio Tinto Energy America Inc. and its affiliate. In connection with the offering, the selling shareholders have granted to the underwriters an option to purchase up to an additional 3,800,000 shares to cover over-allotments, if any.

Cloud Peak Energy Inc. will not retain any proceeds from the offering.

Credit Suisse Securities (USA) LLC, Morgan Stanley & Co. Incorporated, RBC Capital Markets, LLC and J.P. Morgan Securities LLC are acting as joint book-running managers for the offering.

The offering of these securities will be made by the selling shareholders by means of a prospectus supplement and accompanying prospectus, forming an effective part of the registration statement, copies of which may be obtained from Credit Suisse Securities (USA) LLC at One Madison Avenue 1B, New York, New York 10010, Attention: Prospectus Department or by calling (800) 221-1037; Morgan Stanley & Co. Incorporated at 180 Varick Street, 2nd Floor, New York, New York 10014, Attention: Prospectus Department or by calling (866) 718-1649 or by emailing: prospectus@morganstanley.com; RBC Capital Markets, LLC at Three World Financial Center, 200 Vesey Street, 8th Floor, New York, NY 10281-8098, Attention: Equity Syndicate or by calling (212) 428-6670; or J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717 or by calling (866) 803-9204.

A shelf registration statement relating to the offering of the common shares has previously been filed with the U.S. Securities and Exchange Commission and has become effective. This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.


About Cloud Peak Energy:

Cloud Peak Energy Inc. (NYSE:CLD) is headquartered in Wyoming and is the third-largest U.S. coal producer and the only pure-play Powder River Basin (PRB) coal company. As one of the safest coal producers in the nation, Cloud Peak Energy specializes in the production of low sulfur, subbituminous coal. The company owns and operates three surface coal mines in the PRB, the lowest cost major coal producing region in the nation. The Antelope and Cordero Rojo mines are located in Wyoming and the Spring Creek mine is located near Decker, Montana.



Cautionary Note Regarding Forward-Looking Statements

This press release contains 'forward-looking statements? within the meaning of the safe harbor provisions of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act of 1934, as amended (the 'Exchange Act?). Forward-looking statements are not statements of historical facts and often contain words such as "may", "will,? "expect", "believe", "anticipate", "plan", "estimate", "seek", "could,? "should", "intend", "potential", or words of similar meaning. Forward-looking statements are based on management′s current expectations or beliefs, as well as assumptions and estimates regarding our company, industry, economic conditions, government regulations and other factors. These statements are subject to significant risks, uncertainties and assumptions that are difficult to predict and could cause actual results to differ materially from those expressed or implied in the forward-looking statements. We make forward-looking statements based on currently available information, and we assume no obligation to, and expressly disclaim any obligation to, update or revise publicly any forward-looking statements made in this press release, whether as a result of new information, future events or otherwise, except as required by law.



Cloud Peak Energy Inc.
Karla Kimrey, 720-566-2932
Vice
President, Investor Relations