John Tantum

John Tantum is a seasoned professional in strategic planning, business development, and marketing consulting, with extensive experience in the telecommunications and media sectors. As a co-founder of Suppose since May 2017, John also serves as an independent consultant, providing insights to various technology businesses. John's career includes key roles at Ooma, Inc. and Virgin Group, where responsibilities encompassed business development and advisory for telecommunications investments. Previous leadership experiences include serving as Chairman and co-founder of Peek, Managing Director at Digicel USA, and President of Virgin Mobile USA. John's foundational expertise was developed during a tenure as a Senior Engagement Manager at McKinsey & Company. Academically, John holds a Bachelor of Arts in Economics from Dartmouth College and an MBA from The University of Chicago Booth School of Business.