Gary Simmons
Executive Vice President and Chief Operating Officer · Valero Energy
Chief Operating Officer of Valero Energy since July 2023. He was previously its Chief Commercial Officer and has held supply, trading and refinery leadership roles at Valero, including general manager of its Ardmore and St. Charles refineries. Valero Energy ranked No. 40 on the 2026 Fortune 500.
Last reviewed: Oct 1, 2026
Gary Simmons
Executive Vice President and Chief Operating Officer Valero Energy
Last Reviewed: October 1, 2026
Executive Summary
Gary Simmons has been Valero Energy’s Chief Operating Officer since July 2023. A long-serving Valero executive, he ran refineries as general manager at Ardmore and St. Charles, then led supply chain optimisation, crude and feedstock supply and trading, and international operations before serving as Chief Commercial Officer from 2020 to 2023. Valero Energy ranked No. 40 on the 2026 Fortune 500.
Career Highlights
- Executive Vice President and Chief Operating Officer of Valero Energy since July 2023.
- Executive Vice President and Chief Commercial Officer, 2020 to 2023.
- Senior Vice President, Supply, International Operations and Systems Optimization, 2014 to 2020.
Professional Journey
Simmons was vice president and general manager of Valero’s Ardmore and St. Charles refineries, then Vice President Supply Chain Optimization from 2011 and Vice President Crude and Feedstock Supply and Trading from 2012.
From May 2014 he was Senior Vice President Supply, International Operations and Systems Optimization, and in January 2020 he became Executive Vice President and Chief Commercial Officer.
He was promoted to Executive Vice President and Chief Operating Officer in July 2023.
Education
No first-party source read for this profile states his education.