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On the Record · Oil States International

Oil States International subsidiaries, as it lists them

The subsidiaries Oil States International lists in its latest annual report, with the jurisdiction of each, linked to the filing.

Subsidiaries it lists

SubsidiaryJurisdiction
GEODynamics, Inc.Delaware
GEODynamics (U.K.) LimitedUnited Kingdom
Oil States Energy Services (Canada) Inc.Alberta, Canada
Oil States Energy Services Holding, LLC.Delaware
Oil States Energy Services L.L.C.Delaware
OIS Cyprus LimitedCyprus
Oil States Industries, Inc.Delaware
Oil States Industries (Asia) Pte Ltd.Singapore
Oil States Industries do Brasil - Instalacoes Maritimas LtdaBrazil
Oil States Industries 1 B.V.Netherlands
Oil States Industries (India) Private LimitedIndia
Oil States Industries Singapore Holdco B.V.Netherlands
Oil States Industries US, Inc.Delaware
Oil States Industries (UK) LimitedUnited Kingdom
Oil States Management Inc.Delaware
Oil States Industries (Thailand) Ltd.Thailand
Oil States Skagit SMATCO L.L.C.Delaware
OSES International, LLCDelaware
Tempress Technologies, Inc.Washington

From Exhibit 21 of the 10-K for 2025. Companies must list their significant subsidiaries there and may leave out smaller ones, so this is the company’s own list, not every entity it owns.

Read from Oil States International’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-03-04. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.