X0306 4 2022-06-03 0000788965 HALLADOR ENERGY CO HNRG 0001032385 LUBAR DAVID J 833 E. MICHIGAN STREET SUITE 1500 MILWAUKEE WI 53202 1 1 Common Stock 2022-06-03 4 C 0 1152872 4.337 A 3941557 I See Footnote These securities are owned by Lubar Opportunities Fund I, LLC ("LOFI"). Lubar & Co. is the sole manager of the fund. Mr. David Lubar, as CEO of Lubar & Co., may be deemed to share voting and dispositive power as to the shares held by LOFI. Mr. David Lubar disclaims beneficial ownership in the shares owned by LOFI, except to the extent of his respective pecuniary interest therein /s/ David J. Lubar 2022-06-07