Rainier Partners has held a final and above-target closing of Rainier Partners Fund I LP at its hard cap of $300 million.
Fund I’s limited partners include foundations, asset managers, insurance companies, pension plans, family offices, and high-net-worth individuals.
Seattle-headquartered Rainer was co-founded in 2020 by managing partners Alex Rolfe and Jon Altman and with the closing of Fund I, the firm now has over $375 million in assets under management.

Rainier Partners invests from $10 million to $50 million of equity in lower middle-market businesses, primarily in the Western US and Canada, that have from $5 million to $25 million EBITDA. Sectors of interest include business services, financial services, industrial services, and consumer services. Rainier primarily invests in control buyouts, with a focus on family-, founder-, and privately-owned businesses and corporate carve-outs.
To date, Rainier has made investments in three platforms including Calpine Containers, a California-based distributor of agricultural packaging – bags, boxes, pallets and strapping – from 11 locations in California and Arizona (March 2021); Wilmar (Performance Tool), a Washington-headquartered supplier, distributor, and category manager of specialty tools, hand tools, and equipment to the automotive aftermarket, hardware, farm and fleet, and industrial end markets (December 2021); and Pet Food Express, a California-headquartered omnichannel specialty retailer of pet foods and other goods (May 2022).

M2O Private Fund Advisors was Rainer’s placement agent for this fundraise and Kirkland & Ellis provided legal services.
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