Rainier Partners

General contacts

Investor type

Founded

2020

AUM

$400 M

Location

Seattle, Washington, United States

Investment Ticket

$10-50 m

Investment Stage

Series B Late Stage (Series C+)

Region of investment

North America

Investor profile last updated: 16 August, 2026

Profile

Rainier Partners is a private equity firm based in Seattle, Washington, founded in 2020. The firm is composed of a team of 16 professionals, including three partners, who bring extensive experience in investing and operations. Rainier Partners is known for its partnership approach, working closely with management teams to accelerate growth and build value in their portfolio companies.

The firm focuses on investing in lower middle-market companies within the business services, consumer services, industrial services, and financial services sectors. Rainier Partners primarily invests in companies located in the United States, with a particular emphasis on the Western US and Canada. The firm manages Rainier Partners Fund I, which has an AUM of $300 million, launched in 2023.

Notable investments by Rainier Partners include Kleen-Tech Services - a national janitorial services provider, EZRED - a designer and manufacturer of automotive tools, and Anytime Fitness - a fitness franchise. These investments highlight the firm's focus on service-oriented businesses with strong growth potential.

Industry

Business Services (B2B) Consumer Services (B2C) Education Financial Services Fintech Industrial Consumer Products Healthcare Services Real Estate Logistics

Rainier Partners Funds

Name	Type	Industry	Stage	Region	Size	AUM	Launch date
Rainier Partners Fund I	Private Equity (PE)	Business Services (B2B) Consumer Products Consumer Services (B2C) Education Financial Services Fintech Healthcare Services Industrial Real Estate Logistics	Series B Late Stage (Series C+)	North America	$5-10 m	$300 M	February 2023

Contacts

Name

Title

Social Networks

Jon Altman Co-Founder and Managing Partner

Co-Founder and Managing Partner

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Alex Rolfe Co-Founder and Managing Partner

Co-Founder and Managing Partner

a•••@•••

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[email protected]

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Investment-team contacts for Rainier Partners — including verified work emails and LinkedIn profiles — are available to Private Equity List subscribers.
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Contacts sourced from the firm's website and LinkedIn, re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

FAQs about Rainier Partners

Is Rainier Partners a venture capital or private equity firm?

Rainier Partners is a private equity firm. It backs companies at Series B and Late Stage (Series C+), writing tickets of $10-50 m.

Where is Rainier Partners located?

Rainier Partners is located in Seattle, Washington, United States.

When was Rainier Partners founded?

Rainier Partners was founded in 2020.

What sectors and industries does Rainier Partners invest in?

Rainier Partners invests in companies and startups in Business Services (B2B), Consumer Services (B2C), Education, Financial Services, Fintech, Industrial, Consumer Products, Healthcare Services, Real Estate, Logistics.

What is Rainier Partners geographical focus of investments?

Rainier Partners invests in companies and startups in North America.

At what stages of companies and startups does Rainier Partners typically invest in?

Rainier Partners invests in companies and startups at Series B, Late Stage (Series C+).

What is the usual amount of Rainier Partners investment?

Rainier Partners usually invests $10-50 m on average.

What is the amount of assets of under management (AUM) for Rainier Partners?

Rainier Partners has around $400m assets under management.

When was Rainier Partners last fund created?

Rainier Partners last fund was created/launched in 2023-02-16

What are the contacts of Rainier Partners?

Rainier Partners can be reached through its website www.rainierpartners.com and its LinkedIn page. Its general enquiries address is [email protected]. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for Rainier Partners — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

Can I access Rainier Partners data via API or MCP?

Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query Rainier Partners directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.

When was the Rainier Partners profile last updated?

Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 16 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.