X0609 4 2026-09-01 0 0001486159 Chord Energy Corp CHRD 0001805570 McKinney Samantha false 1001 FANNIN STREET SUITE 1500 HOUSTON TX 77002 1 0 0 0 0 Common Stock 2026-09-01 4 S 0 6250 149.74 D 10780 D Common Stock 2026-09-01 4 S 0 3500 150.30 D 7280 D Represents a weighted average price of open market same day sales. Sales of shares took place in multiple transactions at actual prices ranging from $149.17 to $150.17 per share, inclusive. Full information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, Chord Energy Corporation, or a Chord Energy Corporation shareholder. Represents a weighted average price of open market same day sales. Sales of shares took place in multiple transactions at actual prices ranging from $150.22 to $150.35 per share, inclusive. /s/ Melissa K. Buce, as attorney-in-fact 2026-09-02