X0306 4 2019-03-04 0 0001441849 CLOUD PEAK ENERGY INC. CLD 0001169888 MYERS TODD A 748 T-7 ROAD GILLETTE WY 82718 0 1 0 0 SVP Marketing & Bus Dev. Common Stock 2019-03-04 4 M 0 63590 0.47 A 100047 D Common Stock 2019-03-04 4 F 0 18429 0.47 D 81618 D Restricted Stock Units 2019-03-04 4 M 0 63590 0 D Common Stock 63590 64650 D Reflects the number of shares of common stock issued by the Issuer in connection with the vesting of 2016 restricted stock units ("RSUs") granted on March 4, 2016 and originally reported in Table II on the Form 4 filed on March 8, 2016. Reflects the number of shares of common stock withheld by the Issuer in satisfaction of the Reporting Person's tax withholding obligation upon the vesting of 2016 RSUs. This total does not include RSUs granted to the Reporting Person in 2017 or 2018 as vested RSUs may be paid in shares, cash or a combination of shares and cash, in the discretion of the Compensation Committee. Each 2016 RSU represented a contingent right to receive the value of one share of Cloud Peak Energy Inc. ("CPE") common stock. The RSUs vested 3 years from the date of grant (which was March 4, 2016). The performance share units that were also granted on March 4, 2016 did not vest and were cancelled based on CPE relative total shareholder return. Reflects RSUs granted to the Reporting Person in 2017 and 2018. /s/ Bryan J. Pechersky, attorney-in-fact for Todd A. Myers 2019-03-05