Overview
William Hess serves as Principal at 645 Ventures[1][2]. Hess previously held the position of Vice President at 645 Ventures from December 2024 to June 2026[3], and before that worked as Senior Associate at the firm from September 2023 to December 2024[4]. Hess earned an MBA from Harvard Business School between August 2021 and May 2023[5][10], and completed a bachelor's degree in Political Science and Government at Harvard University from 2012 to 2016[11]. Prior to business school, Hess worked in the Investment Team at Thrive Capital during 2021 and from June to August 2022[6][7], served as an Investor at a Family Office from 2019 to 2020[8], and worked as an Associate in Strategy, Corporate Development & Finance at FanDuel from 2016 to 2018[9].
Career history
- PrincipalJun 2026 to present645 Ventures
- Vice PresidentDec 2024 to Jun 2026645 Ventures
- Senior AssociateSep 2023 to Dec 2024645 Ventures
- MBA Candidate at Harvard Business School2021 to 2023Harvard Business School
- Investment TeamJun 2022 to Aug 2022Thrive Capital
- Investment Team2021 to 2021Thrive Capital
- Investor2019 to 2020Family Office
- Associate - Strategy, Corporate Development & Finance2016 to 2018FanDuel
Education
Master of Business Administration - MBAAug 2021 - May 2023Harvard Business School
Bachelor's degree, Political Science and Government2012 - 2016Harvard University
- Deerfield Academy2009 - 2012
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