On the Record · MKS
MKS subsidiaries, as it lists them
The subsidiaries MKS lists in its latest annual report, with the jurisdiction of each, linked to the filing.
Subsidiaries it lists
| Subsidiary | Jurisdiction |
|---|---|
| Alpha 2 B.V. | Netherlands |
| Alpha 3 B.V. | Netherlands |
| Alpha 4 B.V. | Netherlands |
| Alpha Germany Bidco GmbH | Germany |
| Alpha Treasury Services B.V. | Netherlands |
| Atotech (China) Chemicals Ltd. | China |
| Atotech (Malaysia) Sdn. Bhd. | Malaysia |
| Atotech (Philippines) Chemicals, Inc. | Philippines |
| Atotech (Singapore) Chemicals Pte. Ltd. | Singapore |
| Atotech (Thailand) Co., Ltd. | Thailand |
| Atotech (Yangzhou) Chemicals Ltd. | China |
| Atotech Argentina SA | Argentina |
| Atotech Asia Pacific Limited | Hong Kong |
| Atotech Asset Management GmbH | Germany |
| Atotech B.V. | Netherlands |
| Atotech Beteiligungs und Management GmbH & Co. KG | Germany |
| Atotech Canada Ltd. | Canada |
| Atotech CZ, a.s. | Czech Republic |
| Atotech de Mexico S.A. de C.V. | Mexico |
| Atotech Deutschland GmbH & Co. KG | Germany |
| Atotech Development Center Private Limited | India |
| Atotech do Brasil Galvanotecnica Ltda. | Brazil |
| Atotech España, S.A. Unipersonal | Spain |
| Atotech France S.A.S | France |
| Atotech Global Services Private Limited | India |
| Atotech India Private Limited | India |
| Atotech Istanbul Kimya S. Ltd. Sirketi | Turkey |
| Atotech Italia S.r.l. | Italy |
| Atotech Japan K.K. | Japan |
| Atotech Korea Ltd. | Korea |
| Atotech Limited | Jersey |
| Atotech Manufacturing, Inc. | Delaware |
| Atotech Österreich GmbH | Austria |
| Atotech Poland Sp. z.o.o. | Poland |
| Atotech SK, s.r.o. | Slovakia |
| Atotech Skandinavien AB | Sweden |
| Atotech Slovenija d.d. | Slovenia |
| Atotech Taiwan Ltd. | Taiwan |
| Atotech UK Limited | United Kingdom |
| Atotech USA, LLC | Delaware |
| Atotech Vietnam Company Limited | Vietnam |
| Atotech-Chemeta Limited Liability Company | Russian Federation |
| Electro Scientific Industries Europe Ltd | United Kingdom |
| Electro Scientific Industries GmbH | Germany |
| Electro Scientific Industries Singapore Pte. Ltd. | Singapore |
| Electro Scientific Industries, Inc. | Oregon |
| ESI China, Inc. | Oregon |
| ESI Electronic Equipment (Shanghai) Co., Ltd. | China |
| ESI International Corporation | Oregon |
| ESI Japan, K.K. | Japan |
| ESI Korea, Inc. | Korea |
| ESI Vietnam Company Limited | Vietnam |
| High Q Laser GmbH | Austria |
| Hilger Analytical Limited | United Kingdom |
| Iota Solutions Deutschland GmbH | Germany |
| Iota Solutions Netherlands B.V. | Netherlands |
| Micro-Controle Spectra-Physics S.A.S. | France |
| MKS Denmark ApS | Denmark |
| MKS Instruments (China) Company Ltd. | China |
| MKS Instruments (Hong Kong) Limited | Hong Kong |
| MKS Instruments (Singapore) Pte. Ltd. | Singapore |
| MKS Instruments (Thailand) Co., Ltd. | Thailand |
| MKS Instruments Deutschland GmbH | Germany |
| MKS Instruments ESI Switzerland GmbH | Switzerland |
| MKS Instruments Holdings Ltd | United Kingdom |
| MKS Instruments Israel Ltd. | Israel |
| MKS Instruments Italy S.r.l. | Italy |
| MKS Instruments Malaysia Sdn. Bhd. | Malaysia |
| MKS Instruments Mexico S. de R.L. de C.V. | Mexico |
| MKS Instruments UK Limited | United Kingdom |
| MKS Japan, Inc. | Japan |
| MKS Korea Ltd. | Korea |
| MKS Spectra Holdings Limited | United Kingdom |
| MKS Taiwan Technology Limited | Taiwan |
| Newport Corporation | Nevada |
| Newport Instruments Canada Corporation | Canada |
| Newport Laser Holding GmbH | Austria |
| Newport Ophir Holdings Ltd. | Israel |
| Newport Opto-Electronics Technologies (Singapore) Pte. Ltd. | Singapore |
| Newport Opto-Electronics Technologies (Wuxi) Company Limited | China |
| Newport Spectra-Physics B.V. | Netherlands |
| Newport Spectra-Physics GmbH | Germany |
| Newport Spectra-Physics Limited | United Kingdom |
| Ophir Japan Ltd. | Japan |
| Ophir Optics S.R.L. | Romania |
| Ophir Optronics Ltd. | Israel |
| Ophir Optronics Solutions Ltd. | Israel |
| Ophir Spiricon Europe GmbH | Germany |
| Photon Control (USA) Inc. | Delaware |
| Photon Control Inc. | Canada |
| Pt. Atotech Indonesia Chemicals | Indonesia |
| Spectra-Physics, K.K. | Japan |
| Theta Solutions USA, LLC | Delaware |
| V-Gen Ltd. | Israel |
| Visutech Plating Ltd. | Belarus |
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 MKS’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 2026-02-24. 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.