Sumant joined Clearstone Venture Partners in 2000. He spends his time and energy helping visionary entrepreneurs build companies around large markets from the ground up. He represents Clearstone on the boards of The Rubicon Project, DiVitas Networks, Geodelic (observer), Billdesk (India), Games2win (India), Apture and ThisNext.. Some of the past investments where he worked closely with the founding teams and helped incubate the ideas are Kazeon Systems (sold to EMC), Mimosa Systems (sold to Iron Mountain) and Ankeena Networks (sold to Juniper Networks).  Sumant initiated and is responsible for Clearstone's investment activities in India.

Prior to Clearstone, Sumant spent more than eight years as an entrepreneur involved in starting companies both in India and the United States. He has been part of creating companies in the online media world, infrastructure technologies and clean energy.

Sumant has an MBA from the Kellogg Graduate School of Management at Northwestern University, and a BS in Electrical Engineering from Michigan State University. He is a Charter Member of TiE.