We invest in and
help build great businesses
Our investments come with a partnership mentality—we are straightforward, efficient, and relationship-oriented. We are an active partner. We roll up our sleeves to provide significant support, expertise, and financial resources to accelerate growth and build value.
Learn more about our approach to building value.We focus on industries where we can be most helpful to our portfolio companies. These are industries in which we have extensive experience, a network of partners, and deep resources: business services, consumer services, industrial services, and financial services. When we invest, we often do so alongside the founders and management teams of our portfolio companies.
Learn more about our portfolio companies.Our most important investment is the team we are actively building at Rainier. Our group is made up of driven, smart, hard-working, and humble individuals with experience across investing and operations. We’re a relationship-driven firm centered on a culture of entrepreneurship.
Learn more about our team.
Seattle, WA (October 27, 2026) — Rainier Partners, a private equity firm investing in lower middle-market services businesses, is pleased to announce that it has been named to Inc. Magazine’s 2026 list of Founder-Friendly Investors. The recognition marks Rainier’s first inclusion on the list, reflecting the firm’s continued growth and commitment to being a trusted… Read More
Seattle, WA (January 6, 2026) - Rainier Partners and its portfolio company, Kleen-Tech Services, are pleased to announce the appointment of Moses DeBord as Chief Executive Officer of Kleen-Tech, a janitorial services provider with operations across more than 30 states. Moses brings over two decades of leadership and professional experience to the position, having most… Read More
Seattle, WA (September 4, 2025) – Rainier Partners, a private equity firm investing in lower middle-market services businesses, is pleased to announce its investment in Kleen-Tech Services, a janitorial services provider with operations across more than 30 states. Kleen-Tech was founded in 1993 in Denver, Colorado, and has since grown into a leading national provider… Read More
We’re always looking for great people and great businesses to become market leaders in their sectors.
Contact Us