John Simon

John Simon

Managing Director Sigma Prime Ventures

At Sigma Prime, John invests in both new and existing technology businesses. Special interests include mobile and SAAS software companies and disruptive technology companies. John has been a recipient of the Massachusetts Technology Leadership Council “Investor of the Year” Award.

John’s current Sigma investments and/or Board Memberships include: nToggle, Phenom People, BlueConic, Codeship, and Kwicr (acq’d, InStart Logic). Previous to joining Sigma, John was a Co-founder and Managing Director of General Catalyst Partners, where he was on the Board of Directors or otherwise involved with: Jumptap (acq’d, Millennial Media/AOL), Paydiant (acq’d, PayPal), OwnCloud, Big Fish Games (acq’d, Churchill Downs), SignalDemand (acq’d, PROS), BetterLesson, Mocospace, Thumb, Swirl, Swoop, CyPhy Works, BionX, Aidin, Tear Science, Fractyl, Corvia Medical, OvaScience (NASDAQ: OVAS), Taleo (NASDAQ:TLEO, acq’d, Oracle for $2B), m-Qube (acq’d, VeriSign), ProfitLogic (acq’d, Oracle), Maven Networks (acq’d, Yahoo!), Bullhorn Software (acq’d, Vista Equity), Quickplay Media (acq’d, Madison Dearborn), BzzAgent (acq’d, Dunn Humby/Tesco), and Outstart (acq’d, Kenexa/IBM).

Previously, John was the Founder, Chairman and CEO of UroMed Corporation, which had its IPO in 1994 and was subsequently merged to form Alliant Medical Technologies. Prior to that, he led marketing and sales at Adaptive Networks and was a vc at Highland Capital Partners and Charles River Ventures.

John is a member of the World Presidents’ Organization (WPO). He’s a co-founder and current trustee of the Steppingstone Foundation ( In addition, he’s continued his involvement with the non-profit sector by founding the GreenLight Fund (, which spurs the replication and growth of innovative non-profits.