X0306 4 2019-05-21 0 0000086264 Carbon Energy Corp CRBO 0001210010 LAWRENCE BRYAN H C/O YORKTOWN PARTNERS LLC 410 PARK AVENUE, 19TH FLOOR NEW YORK NY 10022 1 0 0 0 Common stock, par value $0.01 per share 2019-05-21 4 A 0 4000 0.00 A 32000 D Common stock, par value $0.01 per share 1959829 I See Footnote Common stock, par value $0.01 per share 896915 I See Footnote Common stock, par value $0.01 per share 896915 I See Footnote Common stock, par value $0.01 per share 1111111 I See Footnote Restricted stock grant. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for Section 16 or any other purpose. These securities are directly owned by Yorktown Energy Partners XI, L.P. ("Yorktown XI"). The reporting person is a member and a manager of the general partner of the general partner of Yorktown XI. These securities are directly owned by Yorktown Energy Partners V, L.P. ("Yorktown V"). The reporting person is a member and a manager of the general partner of Yorktown V. These securities are directly owned by Yorktown Energy Partners VI, L.P. ("Yorktown VI"). The reporting person is a member and a manager of the general partner of the general partner of Yorktown VI. These securities are directly owned by Yorktown Energy Partners IX, L.P. ("Yorktown IX"). The reporting person is a member and a manager of the general partner of the general partner of Yorktown IX. /s/ Bryan H. Lawrence 2019-05-23