Alan Armstrong, a third-generation Oklahoman, has been appointed by Oklahoma Governor Kevin Stitt to serve in the U.S. Senate through the end of the year. This appointment comes as a result of Markwayne Mullin stepping down from his Senate seat to take on the role of homeland security secretary.
Armstrong, who is 63 years old, has never held an elected office prior to this appointment. He is the chairman and former CEO of Williams Companies, a major pipeline operator based in Tulsa, where he has worked for decades.
Governor Stitt praised Armstrong, stating, “He’s a strong business leader who understands the power of free markets and limited government.” This sentiment reflects the governor’s view that Armstrong’s business acumen will benefit the Senate.
Armstrong plans to focus on reforming the permitting process for the energy industry during his time in the Senate. He emphasized the importance of this issue, saying, “It is really a critical time for our country.” His experience in the energy sector is expected to inform his legislative priorities.
Under Oklahoma law, Armstrong must agree not to run for a full term this fall, meaning he will serve until Oklahomans elect a new senator in November. This stipulation ensures that his appointment is temporary and allows for a fresh election.
Armstrong’s appointment was made following discussions with President Donald Trump and Senate Majority Leader John Thune, indicating a level of political support for his selection. His connections within the political landscape may aid in his effectiveness as a senator.
Armstrong has a history of supporting Governor Stitt, having contributed $8,500 to his campaign since 2018. This financial backing may have played a role in his appointment.
He graduated from the University of Oklahoma in 1985 with a bachelor’s degree in civil engineering, which complements his extensive experience in the energy sector. Armstrong became president and CEO of Williams Companies in 2011 and transitioned to executive chairman in 2025.
As he prepares to take office, Armstrong’s focus will be on addressing the challenges facing the energy industry, and observers are keen to see how his business background will influence his legislative approach.
Armstrong’s appointment marks a significant moment in Oklahoma politics, as he steps into a role that will shape the state’s representation in the U.S. Senate for the coming months.
