STONEBRIDGE PARTNERS LLC
STONEBRIDGE PARTNERS LLC is a Series C+ and buyout fund in the US and Canada writing $50M–$200M checks into Developer Tools, building-products, specialty-packaging, specialty-manufacturing, manufacturing, service and distribution.
- Stages
- Series C+, buyout
- Sectors
- Developer Tools, building-products, specialty-packaging, specialty-manufacturing, manufacturing, service, distribution
- Check size
- $50M–$200M
- Invests in
- US-wide, Canada
- Actively investing
- Yes
- Founded
- 1986
- Website
- stonebridgepartners.com
Thesis
Stonebridge Partners is a private equity firm founded in 1986, specializing in middle-market manufacturing, service, and distribution businesses. Their investment thesis centers on acquiring well-managed companies or divisions of public companies with purchase prices typically between $50 million and $200 million. They target companies with revenues up to $200 million and EBITDA between $7 million and $20 million, with a historical concentration in niche manufacturing sectors like building products, infrastructure, specialty packaging, and specialty manufacturing. Stonebridge Partners emphasizes an operations-oriented philosophy, collaborating closely with management teams to enhance growth, operational efficiency, and asset utilization. Core companies must be based in the continental United States or Canada, although add-on acquisitions can be global. Transaction types include majority recapitalizations, corporate carve-outs, and management-led buyouts, with the firm aiming for control or joint control. They have invested over $930 million in capital across 78 transactions, managing $750 million and investing $180 million alongside partners. As of January 2026, they manage a portfolio of 32 companies.
Common questions
Does STONEBRIDGE PARTNERS LLC invest at the Series C+ stage?
Yes. STONEBRIDGE PARTNERS LLC lists Series C+ and buyout among the stages it invests in.
What check size does STONEBRIDGE PARTNERS LLC write?
STONEBRIDGE PARTNERS LLC writes $50M–$200M checks.
Where does STONEBRIDGE PARTNERS LLC invest?
STONEBRIDGE PARTNERS LLC invests in the US and Canada.