PDMR Shareholdings

Diversified Energy Company

("Diversified," or the "Company")

PDMR Shareholdings

Diversified Energy Company (NYSE: DEC, LSE: DEC) announces the vesting on August 5, 2026 of certain restricted stock units previously awarded to David Johnson, the Company’s former Chairman of the Board, under the Company’s 2025 Equity Incentive Plan. Mr. Johnson was a Person Discharging Managerial Responsibility ("PDMRs") until his retirement on August 5, 2026. To settle the awards, the Company will transfer shares of common stock in the Company (net of required tax withholdings) as set forth below:

About Diversified Energy Company

Diversified is a leading publicly traded energy company focused on acquiring, operating, and optimizing cash generating energy assets. Through our differentiated strategy, we acquire existing, long-life assets and invest in them to improve environmental and operational performance until retiring those assets in a safe and environmentally secure manner. Recognized by ratings agencies and organizations for our sustainability leadership, this solutions-oriented, stewardship approach makes Diversified the Right Company at the Right Time to responsibly produce energy, deliver reliable free cash flow, and generate shareholder value.

NOTIFICATION AND PUBLIC DISCLOSURE OF TRANSACTIONS BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM