4M Announces Strategic Hires to Strengthen Executive Leadership Team
Mastin comes to 4M with over 20 years of experience in various senior finance, accounting, and CFO roles.
O2 Investment Partners (www.o2investment.com) is pleased to announce that 4M Building Solutions (www.4-m.com), a premier full-service commercial cleaning and janitorial services platform, has appointed Steve Mastin as Chief Financial Officer and Andrew Rust as Head of Corporate Development and M&A.
Judy Botz will continue in her role as CFO of 4M Building Solutions, while Mastin will oversee financial operations for the broader 4M platform, which also includes LCS Facilities Group (acquired September 2023) and Horizon Services Corp. (acquired March 2024). Mastin comes to 4M with over 20 years of experience in various senior finance, accounting, and CFO roles. Most recently, Steve was the Vice President of Finance for Team Services Group, a sponsor-backed provider of self-directed home care and domestic workers nationwide.
Andrew Rust will oversee corporate development and acquisitions internally and manage 4M’s extensive pipeline of opportunities. Rust comes to 4M with more than a decade of experience leading mergers and acquisitions throughout the U.S. Most recently, he was Chief Financial Officer and Head of M&A for Granite Comfort, a New York-based consolidator of residential HVAC, Plumbing, and Electrical Contractors.
Tim Murch, CEO of 4M, commented, “We are thrilled to welcome Steve Mastin and Andrew Rust to the 4M Exceptional Family. Steve and Andrew will be instrumental in the next phase of 4M’s growth as we look to become the leading independent commercial cleaning and janitorial platform in the U.S.”
Sean Darin at O2 commented, “Our original thesis that the commercial janitorial market is heavily fragmented and ripe for consolidation has already proven itself out – the platform has already completed four acquisitions since we invested at the end of 2022. Andrew Rust is an experienced M&A practitioner and will help us even further supercharge our acquisition activity as we move into the future.” He added, “Steve Mastin is a heavily experienced CFO who we believe will be instrumental in driving the integration required with our significant volume of acquisition activity. Both he and Andrew [Rust] have already hit the ground running and we couldn’t be happier to have them on board.”
About 4M Building Solutions
Founded in 1978, 4M Building Solutions is a full-service cleaning, janitorial, housekeeping, and disinfection services company headquartered in St. Louis, Missouri. The company’s operations span 20 states across the Midwest, Northeast, Southeast, and Western United States. More than 5,200 Team Members provide daily environmentally friendly cleaning to 156 million square feet of space in corporate owner-occupied facilities, multi-tenant office buildings, industrial and manufacturing, logistics, distribution, healthcare, educational, and senior-living facilities. Additional information is available at www.4-m.com.
About O2 Investment Partners
O2 Investment Partners is a Midwestern based private equity firm that seeks to invest in lower middle market B2B services, technology, and select industrial companies. The firm invests in businesses with earnings growth potential and a clear path to the creation of shareholder value. O2 invests with a view toward partnering with management to build and grow the business and take it to its next stage of development. This requires not only a clear vision and strategic plan to create shareholder value, but a close partnership and alignment of interest with management. Additional information is available at www.o2investment.com.
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