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10-K primary document
CMP · Annual Report (Form 10-K) · Filed December 12, 2025

Compass Minerals International Inc — 10-K exhibit

cmp-2025xex211listofsubsid.htm
Compass Minerals International Inc on Boardroom Alpha
Document
Exhibit 21.1
Compass Minerals International, Inc.
List of Subsidiaries as of September 30, 2025

Company NameJurisdiction of Incorporation
Clyman Bay Resources, Inc.Delaware, U.S.
CMI Nova Scotia CompanyNova Scotia, Canada
CMP Canada Inc.Nova Scotia, Canada
CMP Capital, Inc.Delaware, U.S.
Compass Canada Limited PartnershipOntario, Canada
Compass Canada Potash Holdings Inc.Saskatchewan, Canada
Compass Cayman Holdings Ltd.Cayman Islands
Compass Minerals (Europe) LimitedEngland and Wales
Compass Minerals America Inc.Delaware, U.S.
Compass Minerals Canada Corp.Nova Scotia, Canada
Compass Minerals Chile LimitadaChile
Compass Minerals do Brasil Ltda.Brazil
Compass Minerals Europe B.V.
Netherlands
Compass Minerals International Limited PartnershipOntario, Canada
Compass Minerals Lithium Corp of America Inc.Delaware, U.S.
Compass Minerals Louisiana Inc. Delaware, U.S.
Compass Minerals Nova Scotia CompanyNova Scotia, Canada
Compass Minerals Ogden Inc. Delaware, U.S.
Compass Minerals Receivables LLCDelaware, U.S.
Compass Minerals Storage & Archives LimitedEngland and Wales
Compass Minerals UK Holdings LimitedEngland and Wales
Compass Minerals UK LimitedEngland and Wales
Compass Minerals USA LLCDelaware, U.S.
Compass Minerals Winnipeg Unlimited Liability CompanyNova Scotia, Canada
Compass Minerals Wynyard Inc.Saskatchewan, Canada
Compass Resources Canada CompanyNova Scotia, Canada
Compass South American Salt Holdings Ltd.Cayman Islands
Curlew Valley Farms, LLCUtah, U.S.
DeepStore Holdings LimitedEngland and Wales
DeepStore LimitedEngland and Wales
Dove Creek Grazing, LLCUtah, U.S.
Fortress Asset Protection Group, LLCDelaware, U.S.
Fortress Employment Group, Inc. California, U.S.
Fortress North America, LLCDelaware, U.S.
FRS Group LLCDelaware, U.S.
Great Salt Lake Holdings, LLCDelaware, U.S.
GSL CorporationDelaware, U.S.
NAMSCO Inc.Delaware, U.S.
NASC Nova Scotia CompanyNova Scotia, Canada
RT 094 Empreendimentos e Participações Ltda.
Brazil
Salt Union LimitedEngland and Wales


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