PE  Stonebridge Partners

     Office Locations:

81 Main Street, Suite 505
White Plains, NY 10601
Phone: 914-682-2700
Fax: 914-682-0834



  • Middle Market



  • Manufacturing & Industrial



    Stonebridge Partners was founded in 1986 as an operations-oriented private equity firm with an interest in acquiring well-managed companies or divisions of public companies with purchase prices between $50 million and $200 million. Within this segment, the firm has historically focused on niche manufacturing industries, including building products, infrastructure, specialty packaging and specialty manufacturing. During its 24 years of activity, Stonebridge has invested over $575 million of capital in 56 separate acquisitions. Stonebridge seeks to acquire privately owned companies or divisions of public companies primarily serving the industrial or commercial marketplaces. The firm's principal focus is manufacturing companies, where the Partners have substantial experience. Core companies must be based in the continental United States or Canada; add-on acquisition candidates can be located anywhere in the world. Stonebridge acquires niche manufacturing businesses with revenues typically between $30 million and $200 million, and EBITDA between $7 million and $20 million. The firm particularly seeks companies where manufacturing equipment, processes, technology, patents, brand identity and/or reputation provide sustainable barriers to entry for potential competitors. Stonebridge prefers to invest in industries that are growing, however mature industries, where consolidation opportunities and/or well-defined value opportunities exist, are also considered.

    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 New York Database subscription.
    Andrew A. Thomas General Partner
    Andrew W. Magyar Principal and CFO
    David R. Schopp General Partner
    Michael A. Steinback General Partner
    Michael S. Bruno Managing Partner


    Portfolio companies include:

      Alpha Packaging
        web link

      American Dryer
        web link

      Attica Hydraulic Exchange
        web link

        web link

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      Durcon Laboratory
        web link

      Exal Group
        web link

      Hydraulex Global
        web link

      Safety Infrastructure Solutions
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      Specialty Bakers
        web link

      USA Wireless Solutions
        web link


    Recent News: