X0306 4 2017-06-01 0 0001691303 WARRIOR MET COAL, INC. HCC 0001702386 Williams Stephen D. 16243 HIGHWAY 216 BROOKWOOD AL 35444 1 0 0 0 Restricted Stock Units 2017-06-01 4 A 0 6053 0.00 A Common Stock 6053 6053 D All of the reported restricted stock units were granted under the Warrior Met Coal, Inc. 2017 Equity Incentive Plan and will be fully vested as of June 1, 2017, the date of grant. The units will settle in shares of common stock of Warrior Met Coal, Inc. on a one-for-one basis on the earliest of (i) one-third on each of the first three anniversaries of the date of grant; (ii) a change of control; (iii) the undersigned's separation from service with Warrior Met Coal, Inc. or its affiliates; or (iv) death of the undersigned. /s/ Stephen D. Williams 2017-06-01