Masimo to Report Third Quarter 2017 Financial Results after Market Close on Tuesday, October 31

Conference call and webcast to begin at 1:30 p.m. PT (4:30 p.m. ET)

Masimo (NASDAQ: MASI) announced today that it will release financial results for the third quarter ended September 30, 2017, after the market closes on Tuesday, October 31, 2017. The conference call to review the results will begin at 1:30 p.m. PT (4:30 p.m. ET) and will be hosted by Joe Kiani, Chairman and Chief Executive Officer, and Micah Young, Executive Vice President and Chief Financial Officer, along with Mark de Raad, the company’s retiring CFO.

A live webcast of the conference call will be available online from the investor relations page of the company's corporate website at www.masimo.com. The dial-in numbers are [phone] for domestic callers and [phone] for international callers. The reservation code for both dial-in numbers is 1906046. After the live webcast, the call will be available on Masimo's website through November 28, 2017. In addition, a telephonic replay of the call will be available through November 14, 2017. The replay dial-in numbers are [phone] for domestic callers and [phone] for international callers. Please use reservation code 1906046.

About Masimo

Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care by taking noninvasive monitoring to new sites and applications. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world. In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), and more recently, Pleth Variability Index (PVI®) and Oxygen Reserve Index (ORI™), in addition to SpO2, pulse rate, and perfusion index (PI). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect (MOC-9™) interface. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com.

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

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MasimoInvestor Contact:Eli Kammerman, (949) [e-mail] Contact:Irene Paigah, (858) [e-mail]