EXHIBIT 21

SUBSIDIARIES OF THE REGISTRANT

NEOGEN CORPORATION AND SUBSIDIARIES

May 31, 2026

WHERE INCORPORATED

Acumedia Manufacturers, Inc.

Michigan, U.S.

CAP IM Supply, LLC

Delaware, U.S.

CAP Supply, LLC

Delaware, U.S.

Chem-Tech, Ltd.

Michigan, U.S.

Delf (UK) Limited

England, U.K.

Falcon New OpCo, LLC

Delaware, U.S.

GeneSeek Australia

Australia

GeneSeek Canada Properties I, Inc.

Canada

GeneSeek Canada, Inc.

Canada

Geneseek Inc.

Nebraska, U.S.

GeneSeek UK Ltd

United Kingdom

Genetic Veterinary Services, LLC

Delaware, U.S.

Hacco, Inc.

Michigan, U.S.

Megazyme, Ltd.

Ireland

NeoG Corp.

Philippines

Neogen Argentina S.A.

Argentina

Neogen Asia (Thailand) Co, Ltd

Thailand

Neogen Australasia Pty Limited

Australia

Neogen Bio-Scientific Technology (Shanghai) Co., Ltd.

China

Neogen Chile SpA

Chile

Neogen Colombia SAS

Colombia

Neogen do Brasil Productos Para Labratories LTDA.

Brazil

Neogen DR, S.r.l.

Dominican Republic

Neogen Europe Limited

Scotland, U.K.

Neogen Food and Animal Security (India) PVT, LTD

India

Neogen Food Safety Brazil, Ltda

Brazil

Neogen Food Safety Canada Corporation

Canada

Neogen Food Safety Corporation

Delaware, U.S.

Neogen Food Safety Euro Holdings, Ltd

England, U.K.

Neogen Food Safety Switzerland GmbH

Switzerland

Neogen Food Safety UK Holdings, Ltd

England, U.K.

Neogen Food Safety UK, Ltd

England, U.K.

Neogen Food Safety US HoldCo Corporation

Delaware, U.S.

Neogen Germany GmbH

Germany

Neogen Guatemala S.A.

Guatemala

Neogen Ireland Limited

Ireland

Neogen Italia S.r.l.

Italy

Neogen Japan Kabushiki Kaisha

Japan

Neogen Korea Limited

South Korea

Neogen Latinoamerica S.A.P.I. DE C.V.

Mexico

Neogen Poland Sp. Zoo

Poland

Neogen Properties II, LLC

Michigan, U.S.

Neogen Properties III, LLC

Michigan, U.S.

Neogen Properties IX, LLC

Michigan, U.S.

Neogen Properties V, LLC

Michigan, U.S.

Neogen Properties VI, LLC

Michigan, U.S.

Neogen Properties VII, LLC

Nebraska, U.S.

Neogen Uruguay S.A.

Uruguay

Rogama Industria e Comercio Ltda.

Brazil

US Genomics Headco LLC

Delaware, U.S.

All subsidiaries listed above are 100% owned by Neogen Corporation and included in the consolidated financial statements of the Company.