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General Information



Stanford University, MS
Management Science and Engineering
University of Colorado at Boulder, BS 1999
Chemical Engineering

Former Companies

Chief Financial Officer

Financial Organizations

Founding Partner

Web Presences


Jason Portnoy

As a Partner of Subtraction Capital, Jason Portnoy helps companies prepare for, and scale through, hyper-growth periods. He often works closely with CEOs to assist with raising capital, building and managing teams and navigating complex negotiations.

Jason previously held the Chief Financial Officer position at Practice Fusion and Palantir and was the VP of Financial Planning and Analysis for Pay Pal Inc.

Recent Milestones


Company Date Round Size Participants
PokitDok 7/2012Seed$1.3M6
CapLinked 1/2012Venture Round$500k5



  1. PokitDok Raises $1.3M in Seed Funding ( [edit]
  2. Private Investing Network CapLinked Raises $500K ( [edit]
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Last Edited 1/30/14

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