Kellogg said in June it would split into three independent companies, separating its North America cereal arm and plant-based food unit from its high growth snacking business.

Pilnick is now tasked with ensuring a smooth spin off of brands such as Frosted Flakes and Froot Loops at a time when rampant inflation threatens to push more Americans toward cheaper store-brand cereals.

A key executive in a number of Kellogg's strategic initiatives over the years, Pilnick spearheaded the acquisition of potato chips maker Pringles from Procter & Gamble Co and the company's expansion into Africa.

Kellogg also announced Dave McKinstray, who has previously served in multiple executive finance roles, as finance chief of the new cereal company.

It named insiders Sherry Brice-Williamson and Doug VanDeVelde as the new firm's Chief Supply Chain Officer and Chief Growth Officer, respectively.