Rainier Partners

Rainier Partners is a Seattle-based private equity firm focused on investing in lower middle-market companies in the business services, facility services, consumer services, and industrial sectors. The firm aims to be an active growth partner, providing capital, operational resources, and strategic guidance to management teams to drive value creation. It emphasizes alignment of interests by inviting founders or management to co-invest alongside Rainier Partners. Founded in 2020, the firm manages more than $375 million of assets and pursues opportunities in the United States and Canada.

Jon Altman

Co-Founder and Managing Partner

Manu Amin

Associate

Henry Anderson

Vice President

Lucas Bench

Vice President

Caroline Forbess

Analyst

Jonathan Lo

Vice President

Shiven Mohindra

Analyst

Alex Rolfe

Co-Founder and Managing Partner

Nick Vanoverberghe

Associate

11 past transactions

WPAS

Acquisition in 2024
WPAS is a third party administration firm specializing in multi-employer benefit plan administration.

The Omega Fitness

Acquisition in 2023
The Omega Fitness is a franchisee of Anytime Fitness clubs.

Primemas

Seed Round in 2023
Primemas is a semiconductor startup headquartered in New York, with a research and development center located in Seoul. The company specializes in innovative Hub Chiplet System on Chip (SoC) modules aimed at the growing chiplet industry. Its Hub Chiplets, known as "Hublets," utilize high-bandwidth, low-latency direct-to-direct (D2D) interfaces, facilitating efficient infrastructure sharing with custom partner dies. This design enables Primemas Hublets to serve a diverse range of markets, including artificial intelligence, cryptocurrency, and data analytics. By leveraging these advanced technologies, Primemas significantly reduces the time and cost associated with designing and manufacturing custom SoCs, achieving efficiencies that can cut these processes by up to ten times.

SCI Floor Covering

Acquisition in 2023
SCI Floor Covering, Inc. is a distributor and installer of commercial and residential floor covering products based in Romulus, Michigan, with an additional office in Southfield, Michigan. Founded in 1980, the company specializes in providing flooring solutions for various sectors, including multifamily, commercial, and residential markets. Its offerings encompass a wide range of products such as carpet, vinyl, rubber, ceramic tiles, luxury vinyl plank, hardwood, and specialty flooring, as well as polished and stained concrete and epoxy coatings. SCI Floor Covering serves a diverse clientele, including building owners, property managers, general contractors, and institutions like schools and medical facilities. The company focuses on both new installations and replacement projects, particularly in response to damage from disasters. By employing a team of sales representatives, SCI Floor Covering ensures that its clients receive comprehensive assistance for their flooring needs.

Mildang PT

Venture Round in 2022
Mildang PT is an ed-tech platform that provides lectures, management, evaluation, and content through online mode.

Pet Food Express

Private Equity Round in 2022
Pet Food Express is a retail operator specializing in a wide range of products and services for pets, including dogs, cats, small animals, and birds. The company offers various types of pet food, including organic options and those suitable for raw food diets. In addition to pet food, Pet Food Express provides essential supplies such as pet toys, hygiene products, and training materials. The company further enhances its offerings with services like dog training, pet washing, and wellness centers, along with veterinary clinics. Additionally, Pet Food Express is committed to community support through adoption assistance, rescue initiatives, and shelter partnerships, addressing various aspects of pet care and welfare.

Wilmar

Acquisition in 2022
Wilmar is a distributor and supplier of professional tools, catering to automotive aftermarket, hardware, farm and fleet, and industrial sectors. Its product range includes hand tools, air tools, specialty tools, sockets, wrenches, screwdrivers, grease guns, and accessories.

Wilmar

Private Equity Round in 2022
Wilmar is a distributor and supplier of professional tools, catering to automotive aftermarket, hardware, farm and fleet, and industrial sectors. Its product range includes hand tools, air tools, specialty tools, sockets, wrenches, screwdrivers, grease guns, and accessories.

Calpine Containers

Acquisition in 2021
Calpine Containers is a distributor of high-quality packaging solutions tailored for the agriculture industry. The company offers a range of products including bags, boxes, pallets, and strapping, designed to protect produce from field to market. With 11 locations across key West Coast agricultural regions, Calpine serves over 500 fresh produce growers and marketers. In addition to packaging products, the company provides scheduling, inventory control, container assembly, and closing equipment services, ensuring efficient coordination of purchasing and deliveries at competitive prices for its clients.

Buildbox

Series B in 2018
Buildbox is a software company based in Los Angeles that empowers users to create mobile games and interactive experiences without programming knowledge. Its flagship product, also named Buildbox, enables users to design, build, and share their creations on various platforms.

NDREAM

Venture Round in 2018
NDREAM is a software development company specializing in mobile games. It focuses on creating immersive gaming experiences through massive multiplayer online streaming, three-dimensional animated characters, strategy simulations, and life-like visuals.
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