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Thomas R. Voss
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Ameren Corporation
Chairman of the Board
President and Chief Executive Officer
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Thomas R. Voss was elected to the position of chairman of the board of directors of Ameren Corporation on April 27, 2010. He was elected president and chief executive officer of Ameren in May 2009 - titles he retained with his promotion to the position of board chairman. (more)
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Warner Baxter
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Ameren Missouri Chairman, President and
Chief Executive Officer
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| Warner Baxter became chairman, president and chief executive officer of AmerenUE (now Ameren Missouri) on May 1, 2009, after serving as executive vice president and chief financial officer and as president and CEO of Ameren Services - positions he had held since 2003 and 2006 respectively. (more) |
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Scott A. Cisel
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Ameren Illinois Chairman, President and
Chief Executive Officer
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Scott A. Cisel is chairman, president and chief executive officer of Ameren’s Illinois rate-regulated business segment. In this position, he is responsible for the gas and electric delivery business, customer service, gas support and community affairs for Ameren Illinois Company. (more)
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Daniel F. Cole
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Ameren Services Chairman, President and
Chief Executive Officer
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| Daniel F. Cole on May 1, 2009, became chairman, president and chief executive officer of Ameren Services, an Ameren subsidiary providing administrative and technical support services to Ameren and its operating companies, subsidiaries and affiliates. (more) |
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Maureen A. Borkowski
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President and Chief Executive Officer
Ameren Transmission Company
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| Maureen A. Borkowski is president and chief executive officer of Ameren Transmission Company (ATX) - a subsidiary dedicated to electric transmission infrastructure investment. addition to leading the development of new transmission, she is also responsible (more) |
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Adam C. Heflin
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Ameren Missouri Senior Vice President and
Chief Nuclear Officer
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| Adam C. Heflin is senior vice president and chief nuclear officer of Ameren Missouri. In this position he is responsible for all of Ameren Missouri's nuclear operations. Mr. Heflin joined the company in 2005 as site vice president, Callaway Energy Center, (more) |
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Martin J. Lyons
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Ameren Senior Vice President and
Chief Financial Officer
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| Martin J. Lyons became senior vice president and chief financial officer for Ameren on May 1, 2009. In his current position, Lyons is responsible for corporate planning, risk management, financial accounting and reporting, tax planning and compliance, treasury and investor relations functions. (more) |
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Richard J. Mark
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Ameren Missouri Customer Operations
Senior Vice President
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| Richard Mark is senior vice president of Ameren Missouri Customer Operations. He is responsible for electric and gas distribution and Customer Service operations to over 1.2 million customers across central and eastern Missouri including the greater St. Louis area. (more) |
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Michael Moehn
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Ameren Illinois Senior Vice President
Customer Operations |
| Michael Moehn was named senior vice president, Customer Operations, Ameren Illinois, in January 2012. In this position, he directs all electric and gas operations, technical services and customer operations in Illinois. (more) |
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Charles D. Naslund
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Ameren Missouri Senior Vice President
Environmental and Generation Projects
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| Charles D. Naslund is senior vice president, Generation and Environmental Projects for Ameren Missouri - a position he assumed on March 2, 2010, after serving as chairman, president and chief executive officer, Ameren Energy Resources. (more) |
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Gregory L. Nelson
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Ameren Senior Vice President
General Counsel and Secretary
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| Gregory L. Nelson is senior vice president, general counsel and secretary of Ameren, where he is responsible for the legal, federal legislative, security and economic development functions for the corporation. (more) |
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Steven R. Sullivan
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Chairman, President and Chief Executive Officer,
Ameren Energy Resources
Chairman and President, Ameren Energy Generating Company
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| Steven R. Sullivan is chairman, president and chief executive officer, Ameren Energy Resources, and chairman and president, Ameren Energy Generating Company. Ameren Energy Resources is an integrated energy commodity company. (more) |
