Rainier Partners

Rainier Partners is a Seattle-based private equity firm with over $400 million in assets under management, focusing on lower middle-market services businesses. The firm seeks opportunities where it can actively support business owners and management teams by providing growth capital, operational resources, and strategic partnership. Rainier Partners concentrates on industries where it has extensive experience, a network of partners, and deep resources, including business services, consumer services, industrial services, and financial services. Typically, the firm invites the founders or management teams of its portfolio companies to invest alongside it to align interests.

In September 2024, Rainier Partners, through its portfolio company Omega Fitness, acquired 21 Anytime Fitness gyms in Wisconsin from MDS Fitness. This acquisition added to Omega's position as the fastest-growing Anytime Fitness franchisee in the U.S., with over 120 gyms across multiple states. The partnership with Omega Fitness has been instrumental in accelerating growth and expanding the firm's presence in target geographies.

In December 2024, Rainier Partners invested in Welfare & Pension Administration Service (WPAS), a third-party administration firm specializing in multi-employer benefit plan administration. WPAS, with a 70+ year history, serves numerous Taft-Hartley trust plans, and the investment aims to support WPAS's continued growth and expansion nationwide. This move underscores Rainier Partners' commitment to investing in businesses with strong operational foundations and growth potential in the services sector.