We are pleased to announce that ADCO has joined Massman Companies. ADCO adds cartoning to Massman’s impressive product line in primary and secondary packaging. Together with all Massman Companies brands, Massman now has one of the broadest product lines in the industry.
St. Cloud, MN. (March 21, 2025) – We are pleased to announce that ADCO has joined Massman Companies. The partnership was announced on March 20, 2025. We welcome founding family members Kate King, Colleen Anderson, and Maureen Say, and all ADCO stakeholders into the Massman and Granite communities.
Founded by John and Babe Tanney, both originally from Minnesota, ADCO is a marquee manufacturer of end-of-line packaging machinery and systems with one of the broadest lines of cartoners, sleevers, and tray formers on the market. Viewing customers as partners, ADCO creates solutions that solve customer problems, and the Tanney family business has long reflected values of generosity and partnership. Based in Sanger, California, ADCO has been serving customers for 67 years and currently employs 159 team members. See ADCOmfg.com for a company profile.
This partnership marks a significant milestone in Massman’s strategy to deliver automation from carton to pallet. ADCO adds cartoning to Massman’s impressive product line in primary and secondary packaging. Together with all Massman Companies brands, Massman now has one of the broadest product lines in the industry. Massman Companies will bring together sales, customer service, and engineering teams to seamlessly serve the customers of both organizations.
With its evergreen structure and focus on sustainability, long-term ownership by Granite Partners is the best fit for our family’s legacy.
— Kate King, CEO of ADCO
Kate King, CEO of ADCO reflected, “We share common values with Massman of caring for team members, solving problems for our customers, and supporting our local communities. My promise to my mom was to ensure ADCO’s future and to keep our high-quality jobs in Sanger. With its evergreen structure and focus on sustainability, long-term ownership by Granite Partners is the best fit for our family’s legacy.”
“ADCO’s expertise in horizontal cartoners is a natural fit with our portfolio, filling a gap in our connected line and strengthening our packaging solution,” said Jeff Hohn, President & CEO of Massman Companies. “And, like Massman, ADCO strives to provide the best running machine in the factory. We are excited to welcome all ADCO stakeholders to the Massman Companies and the broader Granite community.”
Carrie Willis, Chief Operating Officer at Granite Partners, commented, “The strategic ADCO partnership marks the sixth add-on acquisition in this consolidating industry since Granite first invested in Massman in 2016. Together with Granite, the Massman Companies have more growth resources available as we all strive to create value for stakeholders.”
The partnership with ADCO adds cartoning to Massman’s expanding product line in primary and secondary packaging. Massman now offers the major equipment: bottle handling, filling, capping, cartoning, shrink wrap, case packaging, and palletizing. Massman’s objective is to connect its technologies, providing a broader customer solution. ADCO offers the critical primary packaging of cartoning, sleeving, and tray formers that typically lead a customer’s packaging decision.
