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EXHIBIT 21

SUBSIDIARIES OF REGISTRANT

Per item 601(b)(21)(ii) of Regulation S-K, names of particular subsidiaries may be omitted if the unnamed subsidiaries, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary as of September 30, 2025. Significant subsidiaries are defined in Rule 1-02(w) of Regulation S-X.

Name of Subsidiary						Incorporated or Organized Under Laws of
United States:
American Flange & Manufacturing Co. Inc.						Delaware
Caraustar Industrial and Consumer Products Group, Inc.						Delaware
Caraustar Recovered Fiber Group, Inc.						Delaware
ColePak, LLC						Delaware
Container Life Cycle Management LLC						Delaware
Greif Packaging LLC						Delaware
Greif US Plastics LLC						Delaware
Soterra LLC						Delaware
Lee Container, LLC						Georgia
Lee Container Iowa, LLC						Iowa
Cascade Paper Converters Co.						Michigan
Centurion Container LLC						New Jersey
The Newark Group, Inc.						New Jersey
Caraustar Mill Group, Inc.						Ohio
Centurion Container of Texas, LLC						Texas
International:
Greif Algeria Spa						Algeria
Greif Argentina S.A.						Argentina
Greif Belgium BV						Belgium
Greif Brazil Plastics Ltda						Brazil
Greif Embalagens Industriais do Brasil Ltda.						Brazil
Caraustar Industrial Canada, Inc.						Canada
Greif Bros. Canada Inc.						Canada
Reliance Products Ltd.						Canada
Greif Embalajes Industriales S.p.A.						Chile
Greif (Huizhou) Packaging Co., Ltd.						China
Greif (Shanghai) Packaging Co., Ltd.						China
Greif (Taicang) Packaging Co., Ltd.						China
Greif (Tianjin) Packaging Co., Ltd.						China
Greif Plastics Packaging (Kunshan) Co., Ltd.						China
Greif Czech Republic s.r.o						Czech Republic
Greif France SAS						France
Greif France Plastics Chalon SAS						France
Greif France Plastics St-Etienne SAS						France
Greif Packaging Germany GmbH						Germany
Greif Packaging Plastics Germany GmbH						Germany
Greif Hungary Packaging Kft.						Hungary

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Greif Hungary Plastics Kft.						Hungary
Greif India Plastics Pvt Ltd						India
Pachmas Packaging Ltd.						Israel
Greif Italy S.r.L.						Italy
Greif Malaysia Sdn. Bhd.						Malaysia
Greif Mexico, S.A. de C.V.						Mexico
Greif Packaging Morocco S.A.						Morocco
Greif Netherland B.V.						Netherlands
Greif Tholu B.V.						Netherlands
Greif Poland Sp. z o.o.						Poland
Greif Portugal, Lda.						Portugal
Greif Saudi Arabia Ltd.						Saudi Arabia
Greif Eastern Packaging Pte. Ltd.						Singapore
Greif South Africa (Pty) Ltd.						South Africa
Greif Packaging Spain S.L.						Spain
Greif Sweden AB						Sweden
Greif Mimaysan Ambalaj Sanayi A.S.						Turkey
Greif UK Ltd						United Kingdom
Greif UK Plastics Ltd						United Kingdom