Jack Sinclair

Chief Financial Officer

Jack Sinclair was one of the founders of Return Path in 1999 and returned in 2018 as Chief Financial Officer.

Before Return Path, Jack started his career in corporate finance with stints at Stern Stewart and Financial Resource Group. He always wanted to become an entrepreneur and joined Return Path as part of the founding team in 1999. Over the next 14 years he held different roles at Return Path, including CFO and COO. He left in 2014 to join Stack Overflow as CFO where he helped build out and scale the corporate functions before returning to Return Path in 2018. He holds a bachelor’s degree from the University of Pennsylvania’s Wharton School of Business.

He lives outside of New York City with his wife and three daughters.

Jack Sinclair

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