X0306 4 2021-04-22 0 0001691303 WARRIOR MET COAL, INC. HCC 0001702386 Williams Stephen D. 16243 HIGHWAY 216 BROOKWOOD AL 35444 1 0 0 0 Common Stock 2021-04-22 4 M 0 1636 0.00 A 62476 D Common Stock 2021-04-23 4 M 0 2101 0.00 A 64577 D Common Stock 2021-04-24 4 M 0 4975 0.00 A 69552 D Restricted Stock Units Common Stock 13157 13157 D Restricted Stock Units 2021-04-23 4 M 0 2101 0.00 D Common Stock 2101 0 D Restricted Stock Units 2021-04-22 4 M 0 1636 0.00 D Common Stock 1636 1636 D Restricted Stock Units 2021-04-24 4 M 0 4975 0.00 D Common Stock 4975 9950 D Represents the vesting and settlement of restricted stock units, which convert into common stock on a one-for-one basis. Includes 970 shares of restricted stock granted to the reporting person on February 24, 2017 under the Warrior Met Coal, Inc. 2016 Equity Incentive Plan (the "2016 Plan"), which vest on February 24, 2022. The restricted stock units were granted to the reporting person under the Warrior Met Coal, Inc. 2017 Equity Incentive Plan and were fully vested as of April 19, 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 in a single installment on the earlier to occur of (i) a change of control or (ii) the fifth anniversary of the date of grant. The restricted stock units were granted to the reporting person under the Warrior Met Coal, Inc. 2017 Equity Incentive Plan, and vest in equal installments on each of the first three anniversaries of April 23, 2018, the date of grant. The restricted stock units were granted to the reporting person under the Warrior Met Coal, Inc. 2017 Equity Incentive Plan, and vest in equal installments on each of the first three anniversaries of April 22, 2019, the date of grant. The restricted stock units were granted to the reporting person under the Warrior Met Coal, Inc. 2017 Equity Incentive Plan, and vest in equal installments on each of the first three anniversaries of April 24, 2020, the date of grant. /s/ Kelli K. Gant, by power of attorney 2021-04-26