UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): February 28, 2017

Cloud Peak Energy Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (307) 687-6000

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.                                        Other Events.

On February 28, 2017, Cloud Peak Energy Resources LLC, a Delaware limited liability company, and its wholly-owned subsidiary, Cloud Peak Energy Finance Corp., a Delaware corporation, delivered their Notice of Full Redemption and Redemption Order for all of their outstanding 8.500% Senior Notes due 2019 (the “Notes”) to Wilmington Trust Company, as Trustee, and Citibank, N.A., as Securities Administrator. The redemption price for the Notes will be equal to 101.417% of the principal amount thereof, plus accrued and unpaid interest to the redemption date, for a total payment to holders of the Notes of approximately $64.5 million in the aggregate. The redemption of the Notes is scheduled to occur on March 31, 2017.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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