SAN RAMON, Calif. — Chevron Corp. recently confirmed George L. Kirkland, vice chairman and executive vice president, Upstream, will retire from the company, effective June 15. He will be succeeded by James W. (Jay) Johnson. Kirkland joined Chevron in 1974, was named executive vice president of Upstream in 2005 and elected vice chairman in 2010. Johnson joined Chevron in 1981 and has been senior vice president of Upstream since 2014. For more information, visit www.chevron.com or call (925) 842-1000.