Greg Penner is the current chairman and interim CEO of Walmart. He has been with the company since 2005, and he was named to his current role in 2016. Prior to that, he served as the company's vice chairman and as a member of its board of directors.
Penner was born in Canada and raised in Calgary, Alberta. He earned a bachelor's degree in economics from the University of Calgary. He is married to Julie Walmart, and the couple has three children.