Sempra Energy today announced that it has appointed Richard Mark to the company's board of directors effective Aug. 21. The appointment of Mark will bring the number of directors at Sempra to 10, with five having been newly elected since 2018.

As the former chairman and president of Ameren Illinois, Mark has 20 years of experience in electric and gas utility operations, customer service, public policy and regulation.

"Bringing new perspectives into the boardroom is a critical component of our effort to support the company's mission to build the leading energy infrastructure company in North America," Jeffrey W. Martin, chairman and CEO of Sempra, said in a press release. "Richard's senior executive experience and strong utility background will be a great complement to the board as we advance our corporate strategy and continue to work to improve safety and operations, financial stewardship and long-term shareholder value."

Mark, 68, served as chairman and president of Ameren Illinois from 2012 to 2022. He first joined Ameren in 2002, where he held a series of management positions including senior vice president, customer operations, and vice president, governmental policy and consumer affairs. Before joining Ameren, Mark served as president, CEO and COO of St. Mary's Hospital in East St. Louis, Illinois. He currently serves on the board of directors of Tenet Healthcare Corp.