Richard J. Mark 
Ameren Illinois Chairman, President and Chief Executive Officer
Richard J. Mark is chairman, president and CEO of Ameren Illinois Company. In this position, he is responsible for the natural gas and electric delivery business, customer service, gas support and community affairs for Ameren Illinois.

Mark joined Ameren in 2002 as vice president of Customer Service. In 2003, he became vice president of Governmental Policy and Consumer Affairs. In just two short years, he rose to the position of senior vice president of Ameren Missouri Energy Delivery - becoming the first African-American to hold this position. In 2009, Mark was promoted to senior vice president of Ameren Missouri Customer Operations and oversaw the Community Relations and Corporate Giving for the Missouri utility.

Prior to joining Ameren, Mark spent six years as president and CEO of St. Mary’s Hospital in East St. Louis and five years as chief operating officer. Mark also served voluntarily for 10 years as chairman of the East St. Louis District 189 Financial Oversight Panel helping to turn around a financially failing school district.

Mark serves on a variety of boards and organizations including Enterprise Bank and Trust, Madison Mutual Insurance, Major Case Squad of Greater St. Louis, and the St. Louis Police Foundation. He has received three honorary doctorate degrees for his civic and community work, as well as numerous awards and honors; most recently Mark was recognized by Savoy magazine in its 2014 spring issue as one of the Top 100 Most Influential Blacks in Corporate America. In 2012, Black Enterprise magazine named him one of the 100 Most Powerful Executives in America. His other honors include the NAACP’s Inspiring St. Louisan Award of 2011, St. Louis Business Journal’s Ten Years of Influence of 2010, St. Louis Business Journal’s Most Influential Energy Executive of 2010 and many more.
Ameren Illinois, Senior leadership, executive leadership, Richard Mark, Richard J. Mark, Ameren Illinois Chairman, President and Chief Executive Officer
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