Gregory B. Penner founded Madrone Capital Partners LLC. Currently, he is Non-Executive Chairman of Walmart, Inc. and Director & General Partner at Madrone Capital Partners LLC. He is also on the board of Teach For America, Inc. and Charter School Growth Fund. In his past career he occupied the position of General Partner for Peninsula Capital Advisors LLC, Senior Vice President-Finance & Strategy at Wal-Mart.com USA LLC and Chief Financial Officer & Executive Vice President of Wal-Mart Japan Holdings KK. Gregory B. Penner received an undergraduate degree from Georgetown University and an MBA from Stanford Graduate School of Business.