VC  Trident Capital Cybersecurity

     Office Locations:

400 S El Camino Real
Suite 300
San Mateo, CA 94402
Phone: 650-289-4400
Fax: 650-437-6112



  • Early
  • Seed



  • Software & Internet



    Trident Capital Cybersecurity is a venture capital firm that invests in early-stage companies leveraging emerging technologies in cybersecurity. The firm is a spinout of Trident Capital, which was among the pioneers in cybersecurity venture capital investing, starting in 1998. Trident Capital created two new funds: Trident Capital Cybersecurity and Sunstone Partners. The partners of Trident Capital Cybersecurity and Sunstone Partners intend to continue to work together to drive returns in existing Trident Capital portfolio companies and funds. Managing Directors Alberto YĆ©pez, Don Dixon and Sean Cunningham jointly lead the cybersecurity investment team and are on the boards of Airtight Networks, AlienVault, Blue Cat, Hytrust, IronNet Cybersecurity, Mocana, and Qualys. The firm closed its $300 million Trident Capital Cybersecurity Fund I, L.P. in February of 2017.



      Fund Name



    Get funds under management for this firm including Fund name, Dollar size of fund raise, and Vintage with a National Database subscription or Silicon Valley Database subscription.

    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.
    Donald R. Dixon Co-founder and Managing Director
    Howard S. Zeprun Chief Operating Officer
    J. Alberto Yepez Co-founder and Managing Director
    Michael J. Derrick Chief Financial Officer
    Sean Cunningham Managing Director


    Recent Funding Events (trailing 12 months):










      Series A


      Attivo Networks



      Series C


    Portfolio companies include:

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      Alien Vault
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      Attivo Networks
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      Bayshore Networks
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      BlueCat Networks
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      ID Experts
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      IronNet Cybersecurity
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      Odyssey Logistics
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      Tiandi Energy
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      Top Image Systems
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