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Exhibit 21.1

SUBSIDIARIES OF CALUMET, INC.

(As of December 31, 2025)

 

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Name of Subsidiary

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Jurisdiction of Organization

Calumet Operating, LLC

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Delaware

Calumet Refining, LLC

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Delaware

Calumet Shreveport Refining, LLC

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Delaware

Calumet Finance Corp.

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Delaware

Calumet Karns City Refining, LLC

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Delaware

Calumet Dickinson Refining, LLC

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Delaware

Calumet Missouri, LLC

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Delaware

Calumet Montana Refining, LLC

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Delaware

Montana Renewables, Inc.

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Delaware

Montana Renewables Holdings, Inc.

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Delaware

Montana Renewables Holdings LLC

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Delaware

Montana Renewables, LLC

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Delaware

Calumet Branded Products, LLC

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Delaware

Bel-Ray Company, LLC

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Delaware

Kurlin Company, LLC

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Delaware

Calumet Mexico, LLC

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Delaware

Calumet Princeton Refining, LLC

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Delaware

Calumet Cotton Valley Refining, LLC

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Delaware

Calumet International, Inc.

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Delaware

Calumet Paralogics, Inc.

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Delaware

Founders Insurance Holding, LLC

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North Carolina

Solide Insurance Company, LLC

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North Carolina

Calumet Specialty Products Canada, ULC

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Canada

Calumet Specialty Oils de Mexico, S. de R.L. de C.V.

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Mexico

Calumet Africa Proprietary Limited

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South Africa

Calumet GP, LLC

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Delaware

Calumet Specialty Products Partners, L.P.

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Delaware

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