X0508 4 2026-03-10 0000788965 HALLADOR ENERGY CO HNRG 0002102403 Van Deman Eric Matthew 10375 PARK MEADOWS DRIVE SUITE 500 LONE TREE CO 80124 false true false false Chief Accounting Officer 0 Restricted Stock Unit 2026-03-10 4 A 0 9973 A Common Stock 9973 9973 D Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the 2nd Amended and Restated 2008 RSU Plan. The Units shall vest in the amount of 4,986 RSUs on December 1, 2026 and, 4,987 RSUs on December 1, 2027, subject in each case subject to Participant's continued Service through the applicable vesting date, and shall vest in full subject to Participant's continued Service through to the date of a Change in Control, and otherwise in accordance with the terms of the Plan and this Agreement. /s/ Eric M. Van Deman 2026-03-11