Alan Armstrong

ARMSTRONG, Alan, a Senator from Oklahoma; born in McLennan County, Tex., July 11, 1962; graduated Sooner High School, Bartlesville, Okla.; B.S., civil engineering, University of Oklahoma, 1985; engineer; energy infrastructure company executive; chair, National Petroleum Council 2026; member, President's National Infrastructure Advisory Council; appointed as a Republican to the United States Senate on March 24, 2026, to fill the vacancy caused by the resignation of Markwayne Mullin; took the oath of office on March 24, 2026.