William Casey McManemin

Overview

William Casey McManemin is a seasoned investor with a focus on energy and mineral assets, particularly in the United States. He co-founded Dorchester Minerals, L.P. in 2003 and served as its Chief Executive Officer for over 19 years, leading the company in the acquisition and management of oil and natural gas mineral rights, royalties, and overriding royalties across multiple states. Under his leadership, Dorchester Minerals expanded its portfolio to include interests in approximately 460,000 net acres located in 593 counties and parishes across 28 states. In December 2025, McManemin retired from the Board of Managers of Dorchester Minerals Management GP LLC, effective December 31, 2025, after serving as Chairman since the partnership's inception in 2003. He was succeeded by Robert C. Vaughn as Interim Chairman. McManemin's strategic vision and leadership have significantly contributed to the growth and success of Dorchester Minerals, establishing him as a prominent figure in the energy investment sector. His extensive experience in managing mineral and royalty assets has positioned him as a key player in the industry, with a focus on long-term value creation and sustainable growth. His retirement marks the end of an era for Dorchester Minerals, but his legacy continues to influence the company's direction and the broader energy investment landscape.