Post Holdings, Inc. (POST) does not sell into a diffuse, anonymous food economy. Its filing names a few very large doors, and some of them are exceptionally wide. Sysco Corporation (SYY) and US Foods Holding Corp. (USFD) together accounted for 42.0% of the company’s Foodservice segment sales in fiscal 2025. Walmart Inc. (WMT) and The Kroger Company (KR) accounted for 34.9% of Refrigerated Retail sales.
The customer map is concentrated by segment, not merely by corporate customer count. Walmart also accounted for 17.4% of Post’s consolidated net sales, making it the largest customer across the company.
Post puts the Walmart figure plainly in its 10-K:
"Our largest customer, Walmart, accounted for 17.4% of our consolidated net sales in fiscal 2025."
Post Holdings / 10-K / November 21, 2025
That is the disclosed relationship in its simplest form: one retailer represented 17.4% of companywide sales. The segment disclosures add two more heavyweight pairs.
Post describes its foodservice customers this way:
"The largest customers of our Foodservice segment, Sysco and US Foods, accounted for 42.0% of the segment’s net sales in fiscal 2025."
Post Holdings / 10-K / November 21, 2025
And for refrigerated retail:
"Additionally, the largest customers of our Refrigerated Retail segment, Walmart and Kroger, accounted for 34.9% of the segment’s net sales in fiscal 2025."
Post Holdings / 10-K / November 21, 2025
The map therefore has a recognizable shape: Walmart appears at both the consolidated and segment level, while Sysco, US Foods, and Kroger anchor two separate channels. The filing does not describe these relationships as forecasts or promises. It simply identifies who is buying, and how much of each segment they represent.
The supplier side is much thinner. Post names BellRing Brands, Inc. (BRBR), a company that also appears elsewhere in Post’s corporate history, as the customer for a manufacturing arrangement:
"In addition, our Foodservice segment has a facility that manufactures protein-based shakes as a third-party manufacturer for BellRing."
Post Holdings / 10-K / November 21, 2025
So BellRing is not just a name on the customer map. Post discloses a facility making protein shakes for it as a third-party manufacturer. Post also records a prior ownership connection:
"In March 2022, we completed a series of transactions related to a divestiture of a substantial portion of our interest in BellRing, including contributing our equity interests in BellRing Intermediate Holdings, Inc. (formerly known as BellRing Brands, Inc.)…"
Post Holdings / 10-K / November 21, 2025
That is a divestiture of a substantial portion of Post’s interest, not a disclosure that Post owns all of BellRing today. The relationship map is more layered than a simple supplier-customer line.
There is also a board-level tie to Energizer Holdings, Inc. (ENR). Post says:
"Vitale also serves on the board of directors of Energizer Holdings, Inc., a publicly-traded manufacturer, marketer and distributor of primary batteries, portable lights and auto care appearance, performance, refrigerant and fragrance products."
Post Holdings / 10-K / November 21, 2025
The cross-company map extends beyond Post’s own filing. Peloton Interactive, Inc. (PTON) names Post as a supplier. BellRing names Post as an investee and partner, while The J. M. Smucker Company (SJM) names Post as an investee. Those disclosures add counterparties, but not additional sales percentages.
Post’s disclosed web is therefore lopsided in a very specific way: a concentrated customer base, one named manufacturing relationship, and BellRing threaded through manufacturing, partnership, and investment disclosures. The filing gives the names. It does not ask the reader to supply a verdict.
These are relationships disclosed in SEC filings, mapped by jodie’s analytics. This is not investment advice.