"We want to thank him very much for his 11 years of contribution and service to the company," Ms. Charles said. She added that the "strategic decision" had nothing to do with Mr. Jung's performance.
Mr. Jung, 48, declined to comment.
As a result Mr. Jung's departure, Kim Miller, VP-marketing for morning foods, Jim Poppens, VP-marketing for frozen foods, and Michael Allen, senior VP-marketing for snacks, will all take on additional responsibilities.
Kellogg's advertising budget alone crossed the $1 billion mark in 2007. The company has credited its advertising and marketing with its ability to maintain pricing power in the difficult commodity environment.
During his tenure, Mr. Jung was credited with evolving the Special K Challenge into a full-scale online community. He was known as a strong proponent of digital and brand integration. Mr. Jung launched Raisin Bran Crunch, and worked on other adult cereal brands. He was involved in shifting Kellogg's agencies from commission- to fee-based work. As part of his position, Mr. Jung additionally has served on the Ad Council board. He was also a longtime member of the Association of National Advertisers' TV Advertising Committee.
Mr. Jung began in brand management at Kellogg, later working his way up to media director. He had previously spent a decade on the agency side as an account manager. Mr. Jung also worked for six years as a marketer for the children's book publisher Golden Books Family Entertainment.