Cereal maker Kellogg says its CEO will retire on Jan. 1 and will be replaced by Chief Operating Officer John A. Bryant.
CEO David Mackay, 55, who is also president and a director, plans to help with the transition through March 31. He has been CEO for four years.
Bryant joined Kellogg, which is based in Battle Creek, Mich., in 1998 and has held several positions including chief financial officer. He became COO in 2008.
Kellogg Co., which also makes Pop-Tarts and Cheez-Its, also reaffirmed its revenue and earnings guidance for 2010 and 2011.