EX-21.1 4 masi-20260103x10kex211.htm EX-21.1
Exhibit 21.1

Subsidiaries of the Registrant - 2025
The following are wholly-owned subsidiaries of the registrant, Masimo Corporation, a Delaware corporation:
Name of Subsidiary | State or Jurisdiction of Incorporation or Organization
Masimo Americas, Inc. | Delaware
Masimo de Mexico Holdings I LLC | Delaware
Masimo de Mexico Holdings II LLC | Delaware
Masimo Holdings LLC | Delaware
SpO2.com, Inc. | Delaware
SEDLine, Inc. | Delaware
Masimo Australia Pty Ltd | Australia
Masimo Öesterreich GmbH | Austria
Masimo Importacao e Distribuicao de Produtos Medicos Ltda | Brazil
Masimo Holdings LP | Cayman
Masimo (China) Medical Technology Co., Ltd. | China
Masimo Europe Ltd. | United Kingdom
Masimo Hong Kong Limited | Hong Kong
Masimo Medical Technologies India Private Limited | India
Masimo Japan Kabushiki Kaisha | Japan
Masimo Mexico, S. de R.L. de C.V. | Mexico
Masimo Canada ULC | Nova Scotia
Masimo Asia Pacific PTE. Ltd. | Singapore
Masimo International SARL | Switzerland
Masimo International Technologies SARL | Switzerland
Masimo Medical Technologies (Spain) SL | Spain
Masimo Medikal Ürünler Ticaret Limited Şirketi | Turkey
Masimo Semiconductor, Inc. | Delaware
Masimo Sweden AB | Sweden
52 Discovery, LLC | California
Masimo 25 Sagamore, LLC | New Hampshire
Masimo Korea, LLC | South Korea
Masimo 17, LLC | California
Masimo (Shanghai) Industrial Co., Ltd. | China
Patient Doctor Technologies, Inc. | Delaware
Alton Office Property, LLC | Delaware

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Name of Subsidiary | State or Jurisdiction of Incorporation or Organization
Alton Office Holdings, LLC | Delaware
OC Property Ventures LLC | Delaware
OC Property Shelter LLC | Delaware
Masimo Saudi Arabia for Trading, LLC | Saudi Arabia
Masimo International SARL Regional Headquarter, LLC | Saudi Arabia
VCCB Holdings, Inc. | Delaware
TNI medical AG | Germany
Masimo Technology Café LLC | California
Masimo LHC, Limited | United Kingdom
LiDCO Group Limited | United Kingdom
LiDCO Limited | United Kingdom
LiDCO Netherlands B.V. | Netherlands
Masimo Deutschland GmbH | Germany
Masimo Gulf, LLC | Qatar
Masimo (Gulf) Medical Technologies WLL | Qatar
Masimo Medical Technologies (Malaysia) Sdn Bhd. | Malaysia
Nura Holdings Pty Ltd | Australia
Nura Operations Pty Ltd | Australia
Shenzhen Nura Electroacoustic Technology Ltd | China
Masimo Polska Spółka z ograniczoną odpowiedzialnością | Poland

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