X0306 4 2021-10-01 0000077877 PDC ENERGY, INC. PDCE 0001234638 BROOKMAN BARTON R JR 1775 SHERMAN STREET, SUITE 3000 DENVER CO 80203 1 1 President and CEO Common Stock 2021-10-01 4 S 0 1598 44.50 D 356884 D Common Stock 2021-10-01 4 S 0 402 45.64 D 356482 D The sale reported in this Form 4 was effected pursuant to a Rule 105b-1 trading plan adopted by the reporting person on May 21, 2021. The shares were sold in multiple transactions at prices ranging from $43.83 to $44.82, inclusive. The reporting person undertakes to provide to the issuer, any security holder of issuer, or the staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. The shares were sold in multiple transactions at prices ranging from $45.23 to $45.90, inclusive. The reporting person undertakes to provide to the issuer, any security holder of issuer, or the staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. /s/ Nicole L. Martinet, by power of attorney 2021-10-04