Kellogg Company, Battle Creek, Mich., said President & CEODavid Mackayplans to retire effective Jan. , 2011. In conjunction, Kellogg said has apppintedJohn A. Bryant, chief operating officer and current member of the Board, as the new president and chief executive officer effective January 2, 2011. Officials said Mackay will work closely with Bryant through March 31, 2011, to ensure a smooth transition.

"David has provided invaluable leadership to our Company. His focus on driving sustainable growth and his passion for our Company and people around the globe have been instrumental in our success," said Jim Jenness, Kellogg chairman.

Mackay added, "I have had the distinct privilege of working for this great Company over the past 20 years and serving as its CEO for the past four years. This past summer, I became eligible to retire and made a commitment to spend more time with my family. I am pleased to pass the baton to John, whose management capabilities and wealth of experience have prepared him well to drive our business agenda for 2011 and beyond."

"John has played a central role in our strategic and operational plans over the past decade. His leadership style embodies the Kellogg spirit and values," Jenness added. "The board and I are confident that his depth of knowledge and understanding of our business, our customers, and our organization make him the right choice to lead our company."

Kellogg said Bryant joined the company in 1998 and has held numerous leadership roles. He has led the Kellogg North America and Kellogg International business units, served as chief financial officer from 2002 to 2004 as well as from 2006 to 2009, and assumed his current role of chief operating officer in 2008. Most recently, in July 2010, he was also elected to the company's board of directors.

"I'm excited to lead this great company with its 31,000 talented employees and more than 100-year legacy of beloved brands," said Bryant. "The confidence bestowed upon me is immense, and I am honored and humbled to have been elected to serve in this capacity. We have a strong leadership team in place, and we are committed to delivering long-term, sustainable results."