Boardroom Alpha
10-K primary document
MKSI · Annual Report (Form 10-K) · Filed February 24, 2026

Mks Inc10-K exhibit

mksi-ex21_1.htm
EX-21.1

 

 

EXHIBIT 21.1

 

SUBSIDIARY

JURISDICTION OF INCORPORATION

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


 

 

EXHIBIT 21.1

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


 

 

EXHIBIT 21.1

Pt. Atotech Indonesia Chemicals

Indonesia

Spectra-Physics, K.K.

Japan

Theta Solutions USA, LLC

Delaware

V-Gen Ltd.

Israel

Visutech Plating Ltd.

Belarus

 

 

 

 


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