GMS Ranked Among Northeast Ohio’s Largest Private Companies
RICHFIELD, OH– September 21, 2026 — Group Management Services (GMS), a Certified Professional Employer Organization (CPEO), has been recognized as one of Northeast Ohio’s largest privately held companies, ranking #50 on Crain’s Cleveland Business’ 2026 list of the Largest Privately Held Companies in Northeast Ohio. The ranking is based on 2025 revenue, with GMS reporting $307.3 million in revenue and 18% growth from the previous year.
This recognition highlights GMS’ continued growth and reinforces the company’s position as a leader in the professional employer organization (PEO) industry. As GMS continues to help businesses nationwide streamline payroll, benefits, human resources, and risk management, the company remains committed to delivering exceptional service while supporting the success of its clients and worksite employees.
Being named among Northeast Ohio’s largest private companies is especially meaningful because it reflects the strength of GMS’ business model, the trust of its clients, and the dedication of employees across the organization. The ranking also showcases the company’s impact on the local business community while demonstrating its growing national footprint.
About Crain’s Cleveland Business: The Crain’s Cleveland Business Largest Privately Held Companies in Northeast Ohio list recognizes the region’s most successful privately owned businesses based on annual revenue. Published by Crain’s Cleveland Business, a trusted source of business news, analysis, and market intelligence for Northeast Ohio, the annual ranking highlights companies that are driving growth, creating jobs, and making a significant impact on the regional economy.
About Group Management Services: Group Management Services (GMS) is a certified professional employer organization (CPEO) that provides comprehensive HR outsourcing solutions for small and midsize businesses. Through its co-employment model, GMS supports employers with payroll, human resources, benefits, and risk management to help reduce administrative burden and improve compliance. For 30 years, GMS has partnered with businesses to manage the complexities of employment so they can stay focused on running and growing their organizations.