Gwen Mizell is Senior Vice President, Chief Sustainability Officer and a member of the Executive Leadership Team for Ameren Corporation. She is responsible for developing and executing the company’s sustainability strategy and optimizing collective inclusive impacts across the enterprise.
Mizell’s expertise in the energy industry was developed through prior roles of increasing responsibility at Westinghouse Electric, Siemens, ABB, Calpine Corporation, and KEMA Consulting. She built an energy consulting firm, GSM Development, where she served as president and CEO for 10 years before joining Ameren. Prior to her current role, she held leadership positions in Sustainability, Electrification, and Innovation within Ameren.
Mizell holds a master's degree in management and public policy analysis from Carnegie Mellon University and a bachelor's degree in materials science and engineering from the University of Alabama at Birmingham. In addition, she completed certificate programs in Public Policy Management at the Harvard JFK School of Government and in Strategic Inclusion Management at Georgetown University.
Mizell was appointed to the board of directors for Gibraltar Industries in 2021. Her industry board service includes co-chairing the Edison Electric Institute's Sustainability Committee and chairing the American Association of Blacks in Energy's Sustainability and Development Committees.
Committed to building strong families and communities, Mizell pays it back by serving on several nonprofit and civic organization boards. In addition, she chairs her family foundation to close gaps for high school and first-generation college students, providing mentoring and supportive services to ensure their success.
Savoy Magazine recognized Mizell as one of 2022's Most Influential Black Executives in Corporate America.
What is Gwendolyn G. Mizell's net worth?
The estimated net worth of Gwendolyn G. Mizell is at least $921.03 thousand as of August 22nd, 2025. Ms. Mizell owns 9,129 shares of Ameren stock worth more than $921,034 as of December 5th. This net worth evaluation does not reflect any other assets that Ms. Mizell may own. Learn More about Gwendolyn G. Mizell's net worth.
How do I contact Gwendolyn G. Mizell?
Has Gwendolyn G. Mizell been buying or selling shares of Ameren?
Gwendolyn G. Mizell has not been actively trading shares of Ameren in the last ninety days. Most recently, Gwendolyn G. Mizell sold 1,000 shares of the business's stock in a transaction on Friday, August 22nd. The shares were sold at an average price of $101.79, for a transaction totalling $101,790.00. Following the completion of the sale, the senior vice president now directly owns 9,129 shares of the company's stock, valued at $929,240.91. Learn More on Gwendolyn G. Mizell's trading history.
Who are Ameren's active insiders?
Ameren's insider roster includes Warner Baxter (CEO), Mark Birk (SVP), Fadi Diya (SVP), Rafael Flores (Director), Craig Ivey (Director), Mark Lindgren (SVP), Martin Lyons (CEO), Richard Mark (Insider), Gwendolyn Mizell (Senior Vice President, Chief Sustainability Officer), Michael Moehn (CFO), Chonda Nwamu (SVP), and Shawn Schukar (Insider). Learn More on Ameren's active insiders.
Are insiders buying or selling shares of Ameren?
In the last year, insiders at the utilities provider sold shares 6 times. They sold a total of 20,684 shares worth more than $2,101,534.54. The most recent insider tranaction occured on November, 17th when Director Rafael Flores sold 225 shares worth more than $23,672.25. Insiders at Ameren own 0.4% of the company.
Learn More about insider trades at Ameren. Information on this page was last updated on 11/17/2025.
