TreeHouse Foods Inc. is a multinational food processing company founded in 2005 that specializes in the production of private label packaged foods. Headquartered in Oak Brook, Illinois, and consisting entirely of acquisitions, it had $2 billion in sales and over 4,000 employees in 20 facilities in 2010. As the 37th largest American food and beverage firm in 2015, it was named 2010 Processor of the Year by Food Processing magazine, which called it "the biggest company you never heard of". After being No. 446 on the Fortune 500 list in 2018, TreeHouse dropped to No. 552 on the Fortune 1000 list in 2020. In November 2025, it agreed to be purchased by Industrial F&B Investments III in an all-cash deal valued at nearly $1.2 billion. Part of the European investment group Investindustrial, Industrial F&B Investments III completed the transaction in February 2026. Wikipedia