Leslie Sims
Leslie Sims
Chief Marketing Officer
Impossible Foods
Leslie Sims is an award-winning creative and marketing veteran and the Chief Marketing and Creative Officer of Impossible Foods. She joined Impossible in January 2023 to set the creative vision for the company and transform the brand into a household name.

Named one of the Top 10 CCO's in the U.S. by Adweek, one of the Most Creative Women in Advertising by Business Insider, and one of the Top Marketing Leaders and Innovators by iMedia, Leslie has more than 25 years of experience in creative leadership roles at major advertising agencies. She most recently served as the U.S. Chief Creative officer of Deloitte Digital, where she built a modern, multidisciplinary demand marketing engine and infused creativity throughout every brand touchpoint for clients.

Prior to Deloitte, Leslie served as U.S. Chief Creative Officer for Ogilvy and Young & Rubicam, respectively, leading large cross-functional creative teams whose charter was to build brands and drive demand.

Leslie has produced award-winning and business-transforming work for Fortune 500 organizations and brands of all kinds, including Mastercard, General Mills, Verizon, Staples, IBM, US Navy, Girl Scouts, Land Rover and others. She brings extensive experience in the food space, having worked with dozens of food and restaurant brands like Burger King, TGIFriday's and Joe’s Crab Shack, as well as brands owned by General Mills, including Nature Valley™, Big G Whole Grain Initiative, Cinnamon Toast Crunch™ and Betty Crocker™.

Leslie’s work has been recognized by every major global awards show, including the Webby Awards, Cannes Lions, The One Show, Clios and Effies. She has served on numerous international award show juries, including the prestigious Cannes Lion Titanium jury and the Grand Effies jury.

Leslie serves on the board of directors for The One Club for Creativity and for the Clemson University Erwin Center.