RSM Marks 100 Years of Serving the Middle Market
June 01, 2026
RSM US LLP (“RSM”) - a leading provider of consulting, tax and assurance services for the middle market - is celebrating its 100th anniversary, marking a century of advising middle market businesses through periods of economic, operational and technological change.
In Hartford, CT and across the region, RSM serves companies that are helping shape the economy and drive growth across industries, reflecting the broader impact of the middle market nationwide.
“Reaching 100 years reflects the strength of our people and the middle market businesses we serve,” said Susan Martinelli, Hartford Office Leader. “We’re proud to support organizations driving innovation and contributing to the vitality of our local community.”
For 100 years, RSM has grown alongside the businesses it serves, building consulting, tax and assurance capabilities centered on its brand promise, The Power of Being Understood. That promise continues to guide how RSM brings insight, collaboration and practical perspective to help clients make informed decisions and create long-term value.
The milestone is captured through “RSM¹⁰⁰,” reflecting how a century of experience shapes the firm today and positions it for the future. As businesses face increasing complexity and rising expectations for growth, RSM’s centennial underscores the strength of its people, the depth of its client relationships and the investments the firm is making to support clients moving forward.
