We invest in and
help build great businesses


Rainier Partners is a Seattle-based private equity firm with $375 million in assets under management investing in lower middle-market services businesses. We look for opportunities where we can actively support business owners and management teams by providing growth capital, operational resources, and strategic partnership.

Learn more about our firm and the types of investments we make.

Our Partnership
Approach to
Building Value

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.

Our Portfolio

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.

Our Recent News & Investments

United Carpet Joins Rainier-Backed Flooring Platform SCI Flooring

Case Studies, Other, Portfolio Company News, Press Release, Thought Leadership

Seattle, WA (November 29, 2023) ­- Rainier Partners and its portfolio company, SCI Flooring (“SCI”), are pleased to announce the addition of United Carpet to the firm’s flooring platform. United Carpet is a full-service floor covering provider serving customers in the multi-family, commercial, and residential markets. United Carpet was founded in 1981 in St. Louis,… Read More

Rainier Partners Backs Leading Anytime Fitness Franchisee, Omega Fitness

Case Studies, Other, Portfolio Company News, Press Release, Thought Leadership

Seattle, WA (November 16, 2023) ­- Rainier Partners, a private equity firm investing in lower middle-market services businesses, is pleased to announce its acquisition of Omega Fitness, a preeminent Anytime Fitness franchisee formed by the combination of businesses built by two franchise operators, Andy Gundlach and Russ Allen. Omega Fitness is the second largest Anytime… Read More

Retail Veteran Hayden Tollas Joins Pet Food Express as Chief Financial Officer

Case Studies, Other, Portfolio Company News, Press Release, Thought Leadership

Oakland, CA (Aug 3, 2023) ­- Pet Food Express (“PFE”), an omnichannel pet retailer that sells healthy pet foods, goods, and services, is pleased to announce the hiring of Hayden Tollas as Chief Financial Officer. Tollas brings two decades of experience leading high-performance teams with a passion for serving mission-driven companies. He previously served as… Read More

Reach Out To
Our Team

We’re always looking for great people and great businesses to become market leaders in their sectors.

Contact Us