ST. LOUIS — Ronald D. Wilkinson, corporate vice-president of Ralcorp Holdings, Inc. and president of Ralcorp Cereal Products, has announced plans to retire from the company effective Sept. 30. “Ron has been an integral member of the Ralcorp leadership team for the past 16 years, and we congratulate him on his well-deserved retirement,” said Kevin J. Hunt, chief executive officer and president. “Ron has contributed greatly to Ralcorp’s success over the years, and we are grateful for his strong leadership and business acumen.” Prior to his current role, Mr. Wilkinson was corporate vice-president and president of Ralston Foods from March 2008 to July 2010. Mr. Wilkinson was president of Bremner Food Group, Inc. and Nutcracker Brands, Inc. from December 2006 to March 2008. He also was director of product supply of Ralston Foods from October 1996 to November 2006 and of The Carriage House Companies, Inc. from January 2003 to November 2006. He has held the corporate vice-president position since October 1996.