X0306 4 2017-03-01 0 0001358831 LEGACY RESERVES LP LGCY 0001544888 Foster Micah C. 303 W. WALL, SUITE 1800 MIDLAND TX 79701 0 1 0 0 CAO and Controller Phantom Units 2017-03-01 4 A 0 14868 0 A 2020-02-18 Units 14868 53464 D Phantom Units 2017-03-01 4 A 0 59472 0 A 2020-02-18 Units 59472 143322 D Phantom Units 2017-03-01 4 A 0 29736 0 A 2020-02-18 Units 29736 77950 D Each phantom unit represents the economic equivalent of a unit representing a limited partner interest in Legacy Reserves LP. The phantom units reported on this Form 4 are subject to vesting on February 18, 2020 and are payable in units. Includes the remaining 23,922 phantom units and 14,674 phantom units from the phantom units granted on February 24, 2015 and June 22, 2016, respectively. Represents maximum possible number of phantom units subject to cliff vesting after a three year period ending on February 18, 2020, or 200% of the target amount. The number of phantom units that vest on February 18, 2020 is subject to the achievement of certain objective, performance-based criteria during the three fiscal years prior to the vesting date. If none or only a portion of phantom units vest as a result of specified performance levels not being met, such number of phantom units that fail to vest will be forfeited. The phantom units reported on this Form 4 are subject to vesting on February 18, 2020 and are payable in cash. Includes the remaining 83,850 phantom units from the phantom units granted on June 22, 2016. Includes the remaining 48,214 phantom units from the phantom units granted on June 22, 2016. Chief Accounting Officer and Controller of Legacy Reserves GP, LLC, the general partner of Legacy Reserves LP. /s/ Micah C. Foster 2017-03-03