Post Consumer Brands Canada

Post Foods Canada Inc. and Post Consumer Brands Canada, Inc., both active British Columbia corporations per the BC Corporate Registry, are wholly-owned subsidiaries of Post Holdings, Inc. per its FY2025 10-K subsidiaries exhibit. Post Holdings is incorporated and headquartered in St. Louis, Missouri and listed on the NYSE (POST); its 2026 proxy shows a diffuse shareholder base led by Vanguard (10.7%), BlackRock (8.1%) and other US institutions, with no single controlling holder.

• Exhibit 21.1 - Subsidiaries of Post Holdings, Inc. (as of November 1, 2025) filing “Post Foods Canada Inc. British Columbia”
• BC Corporate Registry: POST FOODS CANADA INC. (BC1214364) registry “"entity_status": "ACT", "home_jurisdiction": "BC"”
• Post Holdings, Inc. 2026 Proxy Statement filing “The Vanguard Group ... 5,597,831 10.7% BlackRock, Inc. ... 4,255,013 8.1%”
• SEC EDGAR submissions for Post Holdings, Inc. (CIK 0001530950) filing “"tickers": ["POST"], "exchanges": ["NYSE"]”

Shreddies, the flagship and most prominent Canadian brand (Original, Honey and Cinnamon Vanilla varieties, marketed as a 75-year Canadian staple), is made at the company's Niagara Falls, Ontario plant per its own About page; Shredded Wheat, a similar wheat-biscuit product, likely shares that plant. The company names only one Canadian production facility among seven North American plants (Michigan, Minnesota, Utah, North Carolina, Arkansas, Iowa, Ontario), so Honey Bunches of Oats, Honeycomb, Sugar Crisp, Chips Ahoy! Cereal, Oreo Puffs, Barbara's and Cranberry Almond Crunch are assumed US-made; Alpen, a Weetabix (UK) family brand, is assumed EU-made. No brand-by-brand manufacturing location is published, so this split is an estimate weighted toward Shreddies.

• Our Company | Post Consumer Brands Canada vendor_statement “Our Shreddies brand, made proudly in Niagara Falls, Ontario, has been helping Canadians start their morning with the genuine goodness of 100% whole wheat for over 75 years.”
• Our Company | Post Consumer Brands Canada vendor_statement “We also have production facilities in Michigan, Minnesota, Utah, North Carolina, Arkansas, Iowa and Ontario.”
• Our Brands | Post Consumer Brands Canada vendor_statement “If these look familiar, it's because we've got some of the most iconic cereal brands in Canada.”

The company's own About page separates a Lakeville, Minnesota corporate headquarters from Canadian and international operations headquartered in Toronto, Ontario, plus Niagara Falls, Ontario plant staff. Both headquarters are vendor-reported, but the split between Canadian-based staff serving the Canadian business and US-based shared corporate functions is our estimate, since the company reports only a combined 2,800-person US-and-Canada headcount.

• Our Company | Post Consumer Brands Canada vendor_statement “Our Canadian and International operations are headquartered in Toronto, Ontario, another dynamic and lively area.”
• Our Company | Post Consumer Brands Canada vendor_statement “We employ 2,800 people in the United States and Canada.”

No ingredient sourcing by country is published beyond a generic 'from domestic and imported ingredients' footnote. Whole grain wheat, the dominant ingredient in Shreddies, Shredded Wheat and Post Raisin Bran, is plausibly Canadian given the Ontario plant and Canada's wheat supply; sugar, cocoa (Oreo Puffs) and dried fruit and nuts (Cranberry Almond Crunch) are commodity ingredients typically sourced outside Canada. This is an estimate, not a disclosed breakdown.

• Breakfast Cereal for Everyone | Post Consumer Brands Canada vendor_statement “*From domestic and imported ingredients.”