Masimo

Masimo Corporation
Type	Public
Traded as	Nasdaq: MASI; S&P 400 component;
Industry	Medical technology; Medical devices; Medical equipment;
Founded	1989
Founder	Joe Kiani
Headquarters	Irvine, California, U.S.
Area served	Worldwide
Key people	Michelle Brennan (chair); Catherine Szyman (CEO);
Revenue	US$2.09 billion (2024)
Operating income	US$−267 million (2024)
Net income	US$−305 million (2024)
Total assets	US$2.63 billion (2024)
Total equity	US$1.05 billion (2024)
Number of employees	c. 3,600 (2024)
Website	masimo.com
	Footnotes;

Masimo Corporation is an American health technology and consumer electronics company headquartered in Irvine, California. The company develops patient monitoring devices, non-invasive sensors, and related software platforms used in hospital and home settings. Masimo has also operated in the consumer audio and wearable device markets. In 2026, Danaher Corporation agreed to acquire the company for $10 billion.