Long-Term Orientation
We buy businesses to hold indefinitely. That shapes how we invest, how we operate, and how we treat people. We protect the legacies sellers built and make decisions that maximize value over decades.

Backed and owned by Perimeter Group (NYSE: PRM).
Contact PGPHPGPH is a permanent-capital serial acquirer of small-to-medium-sized businesses in niche markets, backed and wholly owned by Perimeter Group (NYSE: PRM), a publicly-traded company.
We acquire companies in niche, mission-critical markets and hold them indefinitely, with no intention to sell. We apply the same operating discipline and capital-allocation philosophy that has driven Perimeter Group's success as a multi-billion dollar public company.
We buy businesses to hold indefinitely. That shapes how we invest, how we operate, and how we treat people. We protect the legacies sellers built and make decisions that maximize value over decades.
We approach every business with admiration, humility, and treat everyone with respect.
Authority sits with our operating companies. The best decisions are made by the people closest to the customer.
Compounding improvements over long periods create extraordinary outcomes. We hold high standards and apply them fairly and objectively.
We do whatever it takes to create equity value.
As part of a multi-billion dollar public company, we have resources, processes, and strategies to help grow your business.
We acquire businesses providing niche products or services that customers depend on
Essential to the customer's operation, but a small portion of their total cost
Revenue tied to non-discretionary, mission-critical applications solving challenging, complex customer problems
Highly-engineered products or highly-technical services. Products are often specified onto OEM programs, designed for a unique purpose, and produced in small volume
We look for industries where we can build and grow for decades
Our team brings experience building, operating, and acquiring public and private companies.

Dean is the Founder and Chief Executive Officer of PGPH. He was previously an investor at The Carlyle Group, where he focused on large-cap industrial and transportation buyouts, evaluating opportunities across aerospace & defense, industrial technology, capital goods, distribution, and industrial services subverticals. Before joining The Carlyle Group, Dean worked in the Global Industrials M&A group at Evercore. Dean graduated summa cum laude from the University of Notre Dame with degrees in Finance and Political Science.
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Haitham Khouri is the Chief Executive Officer of Perimeter Group. He joined the company in 2021, upon its acquisition by EverArc Holdings, and previously served as Perimeter's Vice Chairman. Haitham is a founder of EverArc Holdings and has more than 15 years of experience as an investor in private and public companies, starting his career as an analyst at JP Morgan. Haitham earned a BA in Economics from Cornell University and an MBA with Distinction from Harvard Business School.
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Mr. Thorndike founded Housatonic Partners, a leading middle market private equity firm with offices in Boston and San Francisco, in 1994 and has been a Managing Director since that time. Prior to founding Housatonic Partners, Mr. Thorndike worked with T. Rowe Price Associates, a global asset management firm, and Walker & Company, a publishing company, where he was named to its board of directors. Mr. Thorndike has served as a director of over 30 companies since founding Housatonic Partners. He is currently a director of CNX Resources Corporation, a natural gas company, and serves on various boards of directors of private companies. He also serves as a Trustee of WGBH, a public broadcaster serving southern New England, and the College of the Atlantic. Mr. Thorndike is the author of "The Outsiders: Eight Unconventional CEOs and Their Radically Rational Blueprint for Success," which has been translated into 12 languages. Mr. Thorndike holds an A.B. degree in English and American Literature from Harvard University and an M.B.A. degree from Stanford University.
LinkedInWe are actively seeking businesses that fit the criteria above, and we welcome direct conversations with business owners and introductions from intermediaries and advisors.
Contact PGPH