The PowerBar company was founded by Brian Maxwell, a Canadian athlete and entrepreneur, along with Jennifer Biddulph, and Mike McCollum.

They started in Maxwell's kitchen, where they formulated the recipe using the knowledge of Jennifer Biddulph, a nutritionist.

This was the first "energy bar" for use during competition by endurance athletes, such as ultramarathoners and cyclists.

[citation needed] On February 3, 2014, Post Holdings announced it had reached an agreement to acquire PowerBar, Musashi and related worldwide assets from Nestlé.

[3] In 2021, PowerBar regained control of their brand and became a registered trademark of Premier Nutrition Company, LLC.