X0306 4 2018-04-24 0 0001694028 Liberty Oilfield Services Inc. LBRT 0001419734 ELLIOTT R SEAN 950 17TH ST. SUITE 2400 DENVER CO 80202 0 1 0 0 VP & General Counsel Class A common stock 2018-04-24 4 A 0 41116 A 41116 D Class A common stock 2018-04-24 4 A 0 13705 A 54821 D Represents restricted stock units granted on April 24, 2018, which vest in three equal installments on April 1, 2019, 2020 and 2021, subject to continued employment. Each restricted stock unit represents a contingent right to receive one share of Liberty Oilfield Services Inc. Class A common stock following vesting. Represents restricted stock units granted on April 24, 2018, which vest in two equal installments on April 1, 2019 and 2020, subject to continued employment. Each restricted stock unit represents a contingent right to receive one share of Liberty Oilfield Services Inc. Class A common stock following vesting. /s/ R. Sean Elliott 2018-04-26