Post Holdings, Inc. operates as a consumer packaged goods holding company in the United States and internationally. It operates through five segments: Post Consumer Brands, Weetabix, Foodservice, Refrigerated Retail, and BellRing Brands. The Post Consumer Brands segment manufactures, markets, and sells branded and private label ready-to-eat (RTE) cereal and hot cereal products. The Weetabix segment primarily markets and distributes branded and private label RTE cereal, hot cereals and other cereal-based food products, breakfast drinks, and muesli. The Foodservice segment produces and distributes egg and potato products in the foodservice and food ingredient channels. The Refrigerated Retail segment produces and distributes side dishes, eggs and egg products, cheese, sausages, and other refrigerated products to retail customers. The BellRing Brands segment markets and distributes ready-to-drink (RTD) protein shakes, other RTD beverages, powders, nutrition bars, and supplements. Post Holdings, Inc. sells its products primarily to grocery stores, mass merchandise customers, supercenters, club stores, natural/specialty stores, and drug store customers; military, e-commerce, and foodservice channels; discounters, wholesalers, and convenience stores; foodservice distributors, restaurant chains, and food manufacturers and processors; online and specialty retailers, supplement stores, and distributors; and food ingredient customers. The company was founded in 1895 and is headquartered in St. Louis, Missouri.