PE/VC  TSG Equity Partners

     Office Locations:

636 Great Road
Stow, MA 01775
Phone: 978-461-9900 ext 16
Fax: 978-461-9909



  • Expansion
  • Middle Market



  • Consumer Products & Services
  • Energy & Clean Tech
  • Information Technology
  • Manufacturing & Industrial



    TSG Equity Partners is a private equity investment firm providing growth and acquisition financing to expansion stage and middle-market companies. The firm focuses on companies in the Northeast with defensible competitive advantages and unique products and services. Since its founding in 1996, TSG's principals have invested approximately $250 million of equity capital in over 30 companies. TSG targets equity investments ranging in size from $1 to $2.25 million. The firm prefers to invest in companies with revenues of $5 to $15 million that have operating profits or are close to break-even. TSG typically invests in expansion financings, later stage special situations, recapitalizations and leveraged acquisitions. For growth stage investments, the firm's preferred industry is Applied Technology, including Clean Technology. For mature stage investments, TSG prefers industrial and branded product and services. TSG gives first priority to companies located in New England.

    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.
    Don McCullough Operations Partner
    John Nugent Operations Partner
    Liz Robert Operations Partner
    T. Nathanael Shepherd Co-Founder
    Thomas R. Shepherd Co-founder


    Recent Funding Events (trailing 12 months):







      Spectro Cloud



      Series B


    Portfolio companies include:

      Spectro Cloud
        web link


    Recent News: