keywords: kellogg ceo chairman cereal jenness
text: Update 1: Kellogg Appoints Jenness As Its New CEO Kellogg Co., the nation #39;s largest cereal maker, appointed a board member with decades of branding experience to succeed chairman and chief executive Carlos Gutierrez, a dynamic leader who guided the maker of Pop-Tarts, Frosted Flakes and Cheeze-It 