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Activist Wins 2 boards seats at Masimo

Politan Capital says collected 70%+ of vote

Politan Capital Management, a New York-based activist investor firm, said it won two board seats at Irvine-based Masimo Corp.

Politan Managing Partner Quentin Koffey and Michelle Brennan won with at least 70% of the vote, Politan said based on a preliminary analysis from its proxy solicitor. Each of the nominees won 17 of the 20 largest shareholders who weren’t insiders, it said.

“We believe this election represents a clear mandate from shareholders that significant change is needed at Masimo,” Koffey said in a statement. “We are now fully focused on putting the election behind us and working constructively with the incumbent directors to improve the company’s corporate governance, enhance capital allocation and instill better strategic oversight. We look forward to helping Masimo reach its full potential for all its stakeholders.”

Shares of Masimo, a maker of medical devices to monitor oxygen levels, were unchanged in after-hours trading at $162.76 and a $8.6 billion market cap.

For more information, see the upcoming July 3rd issue of the Orange County Business Journal.

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Peter J. Brennan
Peter J. Brennan
With four decades of experience in journalism, Peter J. Brennan has built a career that spans diverse news topics and global coverage. From reporting on wars, narcotics trafficking, and natural disasters to analyzing business and financial markets, Peter’s work reflects a commitment to impactful storytelling. Peter’s association with the Orange County Business Journal began in 1997, where he worked until 2000 before moving to Bloomberg News. During his 15 years at Bloomberg, his reporting often influenced financial markets, with headlines and articles moving the market caps of major companies by hundreds of millions of dollars. In 2017, Peter returned to the Orange County Business Journal as Financial Editor, bringing his heavy business industry expertise. Over the years, he advanced to Executive Editor and, in 2024, was named Editor-in-Chief. Peter’s work has been featured in prestigious publications such as The New York Times and The Washington Post, and he has appeared on CNN, CBC, BBC, and Bloomberg TV. A Kiplinger Fellowship recipient at The Ohio State University, he leads the Business Journal with a dedication to uncovering stories that matter and shaping the local business community and beyond.
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