Quikrete Joins Forbes List of Largest U.S. Family Businesses at No. 43 Following Summit Materials Acquisition

Quikrete ranked No. 43 on Forbes’ first ever ranking of America’s Largest Family Businesses published the week of May 13, 2026. Forbes reported that the Atlanta-based company is the 17th most valuable privately-held family business in America, with the Winchester family worth an estimated $18 billion thanks to their estimated 100% ownership of Quikrete.

5 billion to acquire Summit Materials in February 2025. 1 billion of revenue for the first nine months of 2024. S&P Global Ratings expected Quikrete’s revenue to rise between 50% and 60% in 2025 before sales growth normalizes at 3% to 7% in 2026.

7 billion of debt on its books according to Moody’s Ratings’ most recent credit report published in December 2025. 1 billion every year. Moody’s Ratings vice president Peter Doyle said Quikrete’s operating margin is rated BAA, described as a range of 15% to 20%.

““We’re proud of our heritage as an American, family-run company that has helped revolutionize the building and home improvement industries.” — Jim Winchester, in a 2015 press release. Jim Winchester, 82, served as CEO of Quikrete until at least 2015. Will Magill has been CEO since around 2020. Jim, Jack and Dennis Winchester sit on Quikrete’s three-person board. Jack Winchester is 80 and Dennis Winchester is 77 as of May 2026. Dennis Winchester donated $103,000 to the Trump 47 Committee in 2024 according to Federal Election Commission filings. The family has kept a low public profile despite the company’s reach. A representative for Quikrete and the Winchesters declined multiple requests for interviews, Forbes reported. Gene Winchester pioneered pre-blended, packaged concrete under the Gemaco Quikrete brand in 1951. He was born in 1917, joined Maintenance Products as general manager in 1950 and bought the company, renaming it Quikrete, in 1965. Quikrete was originally founded as Maintenance Products, Inc. in Columbus, Ohio in 1940. Gene Winchester died in 2003. His three sons took over the family business in 1981 and moved Quikrete’s headquarters to Atlanta that same year. The Winchester brothers—Jim, Jack and Dennis—graduated from John Carroll University between 1965 and 1970. They donated $1 million for scholarships to the university in 2014.”

““Our parents sacrificed everything to make sure we received a Jesuit education. Now that my brothers and I are in a position to pay it forward, we feel investing in JCU is essential.””

““The actual product grouping dictated that you had to have local manufacturing, and of course, that turned into a very powerful distribution tool [across] the nation. Very few people can deliver an 80 pound bag of concrete anywhere in the United States–Hawaii and Alaska included–in 24 hours or less. And we did that in the ‘60s and ‘70s.” — Dennis Winchester, in a 2015 company video. Quikrete had manufacturing plants in nearly 50 markets in the U.S. and Canada by the end of the 1980s. It had more than 90 manufacturing plants by 2015. The company signed Don Knotts as its first corporate spokesperson in 1985. Quikrete celebrated its 75th anniversary in 2015.”

““From day one, my father Gene Winchester was driven to meet the needs of both contractors and homeowners with the highest-quality products at fair market value, and that commitment remains a core value of Quikrete today.””

““Everybody likes a winner. And if you’re on the winning team, you’d like to stay with the winning team.” — Jim Winchester, in the 2015 video. Beginning around the early 2010s, Quikrete acquired Best Block, Custom Building Products, and Quality Pavement Repair. It paid $1.1 billion to buy Contech Engineered Solutions in 2016, bought the U.S. concrete pipe business of CEMEX for approximately $500 million in 2017, acquired Forterra for $2.7 billion in 2022, and exchanged nearly $3 billion of assets with Martin Marietta Materials in February 2026. Those deals expanded the company beyond packaged concrete into cement, aggregates and ready-mix concrete. Quikrete supplied materials used to restore the Statue of Liberty, the U.S. Capitol Dome, and Alcatraz. It also supplied materials used at Fenway Park and Gillette Stadium and supplied six million pounds of materials for the construction of the Georgia Aquarium. Competitor Sakrete sold the first bags of dry concrete mix in 1936. Forbes reported that the Winchester family’s concrete business has grown from its modest Ohio origins into one of the country’s largest privately held family enterprises.”