Diversified Energy Regulatory News (DEC)

28 December 2022

Diversified Energy Company PLC

("Diversified" or the "Company")

Board of Director Updates

Diversified Energy Company PLC (LSE: DEC) is pleased to announce that its Board of Directors (the "Board") has appointed Kathryn Klaber as an independent non-executive director, effective 1 January 2023. The appointment is part of its previously announced transition of current Board member Melanie Little effective 31 December 2022, and will maintain the size of the Board at eight members, and diversity composition including 63% independent and 37% female directors.

Kathryn's more than 30 years of experience with a focus on energy development and environmental, health and safety ("EHS") compliance complements the Board's collective experience. Kathryn currently serves as the Managing Director of The Klaber Group, which provides strategic consulting services to businesses and organizations with a focus on energy development in the United States and abroad.

Prior to founding The Klaber Group, Kathryn launched and led the Marcellus Shale Coalition as its first CEO, growing the organization to be the premier regional trade association for the gas and oil industry in the Northeastern Unites States. As CEO of the Marcellus Shale Coalition, Kathryn worked closely with elected leaders, regulators and member companies to advance the responsible development of the Appalachian Basin. Kathryn's other experience also includes serving as the Executive Vice President for Competitiveness at the Allegheny Conference on Community Development and Executive Director of the Pennsylvania Economy League where her work focused on advancing key policy and regulatory matters. Earlier in her career, Kathryn accumulated significant experience in EHS strategy and compliance with the international consulting firm Environmental Resource Management. Kathryn holds an undergraduate degree in environmental science from Bucknell University and a Masters in Business Administration from Carnegie Mellon University.

Commenting on the appointment, David Johnson, Chairman, said:

"It is my pleasure to welcome Kathryn to Diversified's Board of Directors. Her breadth of experience, leadership, and reputation in the energy industry, along with her EHS experience will provide valuable perspectives. We look forward to Kathryn's contributions as Diversified continues to progress its strategy of responsibly delivering sustainable stakeholder returns."

Upon her appointment, Kathryn will also become a member of the Board's Sustainability and Safety Committee and the Nomination and Governance Committee. Concurrent with Kathryn's joining, the Board is making the following committee updates:

• Martin Thomas will become a member of the Audit and Risk Committee

• David Turner will become a member of the Remuneration Committee and will no longer serve on the Nomination and Governance Committee

Diversified engaged Heidrick & Struggles as advisor for the board member selection process.

The Company is making this announcement pursuant to Listing Rule 9.6.11R with no further disclosure necessary under Listing Rule 9.6.13R.

For further information please contact:

About Diversified Energy Company PLC

Diversified Energy Company PLC is an independent energy company engaged in the production, marketing and transportation of primarily natural gas related to its synergistic US onshore upstream and midstream assets.