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Exhibit 21.1
HALLIBURTON COMPANY
Subsidiaries of the Registrant
December 31, 2025
STATE OR COUNTRY
NAME OF COMPANYOF INCORPORATION
Brezz Newco (Halliburton Netherlands Holdings B.V)Netherlands
Halliburton Energy Services, Inc.United States, Delaware
Halliburton Global Affiliates Holdings B.V.Netherlands
Halliburton Global Holdings B.V.Curacao
Halliburton Global Holdings, LLCUnited States, Delaware
Halliburton Global Netherlands Cooperatief U.A.Netherlands
Halliburton Group Technologies, Inc.United States, Delaware
Halliburton Holdings, LLCUnited States, Delaware
Halliburton Offshore Technologies, Inc.United States, Delaware
Halliburton Operations Finance Company, LLCUnited States, Texas
Halliburton Swiss Holdings GmbHSwitzerland
Halliburton Technology Holdings, Inc.United States, Delaware
Halliburton Technology Partners LLCUnited States, Delaware
Halliburton US International HoldingsUnited States, Delaware