Cleanzine: your weekly cleaning and hygiene industry newsletter 30th July 2026 Issue no. 1221

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4M Building Solutions acquires Bluegrass Commercial Cleaning and Rainbow Maintenance Services

4M Building Solutions, the US-based full-service commercial cleaning and janitorial services platform, has completed the acquisition of Kentucky-based Bluegrass Commercial Cleaning and Illinois-based Rainbow Maintenance Services.

Husband and wife team Jared and Christy Baker purchased Bluegrass in 2015, and since then, the Bakers have grown the business into a trusted commercial cleaning leader across Kentucky. The company specialises in janitorial services, strip/wax floors and deep/disinfecting cleaning for clients in a variety of end markets including distribution, medical, banking, corporate owner occupied, government and education.

Rainbow has been servicing the greater Chicago, IL metro area since 1985. The company is a customer-driven organisation operating on a simple belief that quality workmanship and open communication are the keys to customer satisfaction. Rainbow brings with it long-tenured customers within an attractive and diverse set of end markets including distribution, corporate owner occupied, medical and education.

Bluegrass and Rainbow mark 4M's 15th and 16th acquisitions since partnering with O2 Investment Partners in January 2023. "Both companies share a commitment to quality, customer service,and community values which aligns well with 4M's mission,” says Leonard Carder, 4M CEO. “We are honoured to welcome their clients and team members into the 4M family as we continue our growth across the country. By bringing the full breadth of 4M's resources to Bluegrass and Rainbow, we are excited to bring their customers greater operational support and service capacity. We look forward to building upon the strong foundation of both teams."

Mark Heneman at O2 comments:

"2026 has been a transformational year for 4M. We continue to improve our service quality and expand our commercial reach across the country. The two partnerships reflect that ongoing momentum, and we are excited to deepen our presence in both Kentucky and Illinois. We are thrilled to welcome Bluegrass, Rainbow, and their respective team members to the 4M platform."

www.bluegrass-cleaning.com | www.rainbowms.com | www.4-m.com | www.o2investment.com

30th July 2026