OLN Subsidiaries | Olin Corporation

Olin Corporation Subsidiaries

Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (17 lists). Names and jurisdictions are as filed.

2026-02-20: Subsidiary Company; Jurisdiction Jurisdiction.
2026-02-20: Subsidiary Blue Cube Holding LLC; Jurisdiction DE.
2026-02-20: Subsidiary Blue Cube Intermediate Holding 2 LLC; Jurisdiction DE.
2026-02-20: Subsidiary Blue Cube International Holdings LLC; Jurisdiction DE.

Annual report filed	Subsidiary	Jurisdiction
2026-02-20	Company	Jurisdiction
2026-02-20	Blue Cube Holding LLC	DE
2026-02-20	Blue Cube Intermediate Holding 2 LLC	DE
2026-02-20	Blue Cube International Holdings LLC	DE
2026-02-20	Blue Cube IP LLC	DE
2026-02-20	Blue Cube Operations LLC	DE
2026-02-20	Blue Cube Spinco LLC	DE
2026-02-20	Blue Water Alliance JV, LLC	DE
2026-02-20	Henderson Groundwater LLC	NV
2026-02-20	HPCM LLC	DE
2026-02-20	Hunt Trading Co.	MO
2026-02-20	Imperial West Chemical Co.	NV
2026-02-20	K. A. Steel Chemicals, LLC	DE
2026-02-20	K. A. Steel International Inc.	DE
2026-02-20	KAS Muscatine LLC	IA
2026-02-20	KNA California, Inc.(see footnote 2)	DE
2026-02-20	KWT, Inc.	DE
2026-02-20	Monarch Brass & Copper Corp.	NY
2026-02-20	Monarch Brass & Copper of New England Corp.	RI
2026-02-20	New Haven Copper Company	CT
2026-02-20	Niloco BCN Holdings, LLC	DE
2026-02-20	Niloco Global Holdings LLC	DE
2026-02-20	Niloco Hydrogen Holdings LLC	DE
2026-02-20	Olin Benefits Management, Inc.	CA
2026-02-20	Olin Business Holdings	DE
2026-02-20	Olin Chlor Alkali Logistics Inc.	DE
2026-02-20	Olin Chlorine 7, LLC	DE
2026-02-20	Olin Engineered Systems, Inc.	DE
2026-02-20	Olin Far East, Limited	DE
2026-02-20	Olin Finance Company, LLC	DE
2026-02-20	Olin Financial Services Inc.	DE
2026-02-20	Olin Funding Company LLC	DE
2026-02-20	Olin North American Holdings, LLC	DE
2026-02-20	Olin Russellville Cell Technologies LLC	DE
2026-02-20	Olin Winchester, LLC	DE
2026-02-20	Pioneer Americas LLC	DE
2026-02-20	Pioneer Companies, LLC	DE
2026-02-20	Pioneer (East), Inc.	DE
2026-02-20	Pioneer Licensing, Inc.	DE
2026-02-20	Pioneer Transportation LLC	DE
2026-02-20	Pioneer Water Technologies, Inc.	DE
2026-02-20	Ravenna Arsenal, Inc.	OH
2026-02-20	TriOlin, LLC	DE
2026-02-20	Waterbury Rolling Mills, Inc.	CT
2026-02-20	Winchester Ammunition, Inc.	DE
2026-02-20	Winchester Defense, LLC	DE
2026-02-20	INTERNATIONAL
2026-02-20	BC Switzerland GmbH	Switzerland
2026-02-20	Blue Cube Netherlands Holding C.V.	Netherlands
2026-02-20	Blue Cube Brasil Comércio de Produtos Químicos Ltda. (See footnote 3 for Subordinates)	Brazil
2026-02-20	Blue Cube Chemicals Hong Kong Limited	Hong Kong
2026-02-20	Blue Cube Chemicals India Private Limited	India
2026-02-20	Blue Cube Chemicals Italy S.r.l.	Italy
2026-02-20	Blue Cube Chemical Korea Ltd.	Korea
2026-02-20	Blue Cube Chemicals Singapore Pte. Ltd.	Singapore
2026-02-20	Blue Cube Chemicals Singapore Pte. Ltd. Taiwan Branch	Taiwan
2026-02-20	Blue Cube Chemicals (UK) Limited	United Kingdom
2026-02-20	Blue Cube Chemicals (Zhangjiagang) Co., Ltd.	China
2026-02-20	Blue Cube Chemicals (Zhangjiagang) Co., Ltd. Shanghai Branch	China
2026-02-20	Blue Cube Denmark ApS	Denmark
2026-02-20	Blue Cube Germany Assets GmbH & Co. KG	Germany
2026-02-20	Blue Cube Germany Assets Management GmbH	Germany
2026-02-20	Blue Cube Japan LLC	Japan
2026-02-20	Blue Cube Mexico, S. de R.L. de C.V.	Mexico
2026-02-20	Blue Cube Netherlands B.V.	Netherlands
2026-02-20	Blue Cube Rasha OOO	Russia
2026-02-20	Blue Cube (Thailand) Company Limited	Thailand
2026-02-20	Blue Cube Turkey Kimyasal Ǜrűnler Limited Șirketi	Turkey
2026-02-20	Blue Water Alliance Europe B.V.	Netherlands
2026-02-20	Blue Water Alliance JV LLP	United Kingdom
2026-02-20	BWA Japan Godo Kaisha	Japan
2026-02-20	CANSO Chemicals Limited	Nova Scotia, Canada
2026-02-20	Nedastra Holding B.V.	Netherlands
2026-02-20	Niloco Cyprus Limited	Cyprus
2026-02-20	Olin Canada ULC	Nova Scotia, Canada
2026-02-20	Olin Cyprus Holdings Ltd.	Cyprus
2026-02-20	Olin Germany AP LTP GmbH	Germany
2026-02-20	Olin Germany Upstream GmbH & Co KG	Germany
2026-02-20	Olin International Holdings Limited	United Kingdom
2026-02-20	Olin Malta Holdings Limited	Malta
2026-02-20	Winchester Australia Limited	Australia

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