Alan Armstrong brings decades of energy sector leadership to the Senate, having served as CEO of Williams, a major oil and gas pipeline company, for nearly 15 years before his appointment in 2026. The businessman-turned-politician was selected by Governor Kevin Stitt to fill the vacancy left when Markwayne Mullin departed for a cabinet position. Armstrong's extensive background in Oklahoma's crucial energy industry positions him as a natural advocate for fossil fuel interests and regulatory policies that support traditional energy development.