The company also announced its shareholders ratified the appointment of PricewaterhouseCoopers as the company's independent registered public accounting firm for the 2014 fiscal year.
Shareholders also approved the compensation of Cloud Peak Energy's named executive officers, as disclosed in its 2014 proxy statement.
The company said the voting results were based on the preliminary report of the company's inspector of election.
Final results will be included in the company's current report on Form 8-K to be filed within four business days of the annual meeting.
