VC  Horizon Ventures

     Office Locations:

4 Main St., Suite 20
Los Altos, CA 94022
Phone: 650-917-4100
Fax: 650-917-4109



  • Early
  • Seed



  • Communications & Networking
  • Information Technology
  • Software & Internet



    Founded in 1999, Horizon Ventures is a venture capital partnership responsible for $150M in private and SBIC leveraged capital, with exclusive focus on early stage private companies and special emphasis on the following industries: Wireless and broadband applications, Software applications for business and component technologies. The companies in which Horizon invests usually have some institutional VC investment already and are either entering their market or generating revenue of $1 to $5 million per year. Horizon 'fills the gap' between angel funding, and large VC funds, with $2-4 million in initial investment, and a target of $7 million over time. The firm prefers to invest in companies that are easily accessible from their Los Altos office.

    Investment Firm Key

       VC = Venture Capital
       PE = Private Equity
       A = Angel
       I = Incubator
       MB = Merchant Bank
       VD = Venture Debt
       FI = Family Investment Office
       FOF = Fund of Funds
       ED = Economic Development Office   
       TT = Technology Transfer Office
       CVC = Corporate Venture Capital
       SEC = Secondary Purchaser
       HF = Hedge Fund/Mutual Fund
    Venture Capital
    Seed Stage
    (includes "pre-seed," or
    concept stage)
    No Revenue
    Early StageMinimal
    Growth Stage
    (also called Mid-stage)
    Expansion Stage
    (also called Late-stage)
    $7M and greater
    Private Equity
    Lower Middle Market$10M-$249M
    Middle Market$250M-$499M
    Upper Middle Market$500M-$1B
    Large Cap>$1B

    Investment Team:

    Name   Title
    Get the complete investment team + individual email addresses for investment team partners. Get personal images, LinkedIn links, investment specialties, office locations and more with a National Database subscription or Silicon Valley Database subscription.
    Art Reidel Managing Director
    Doug Tsui Venture Partner
    Doug Tsui Venture Partner
    Jack Carsten Managing Director
    John Hall Managing Director


    Recent Funding Events (trailing 12 months):










      Series A


    Portfolio companies include:

      Applied Microstructures
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      Chelsio Communications
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      Filip Technologies
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      Identity Engines
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      Impossible Foods
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      InfiniRoute Networks
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      Mark One
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      Misfit Wearables
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      Modern Meadow
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      Oscar Insurance
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      PINC Solutions
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      Sensys Networks
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      Tempo AI
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      Theta Microelectronics
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      Venturi Wireless
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      WhiteHat Security
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    Recent News: