GILLETTE, Wyo.–(BUSINESS WIRE)–Cloud Peak Energy Inc. (NYSE: CLD) (the “Company”) announced that it has priced a registered underwritten public offering of 13,500,000 shares of its common stock at a price to the public of $5.10 per share. The Company has granted the underwriters a 30-day option to purchase 2,000,000 additional shares of its common stock. The Company intends to use the net proceeds from the offering to fund the full redemption of its outstanding 8.50% Senior Notes due 2019 (th