Hedge Fund RTW Under SEC Investigation for Role in Masimo Proxy Fight

MASI
September 19, 2025
RTW Investments, a hedge fund specializing in life sciences, is currently under investigation by the Securities and Exchange Commission (SEC). The probe focuses on the firm's involvement in the recent proxy fight at Masimo Corporation. This regulatory scrutiny, reported on November 26, 2024, highlights the intense nature of the boardroom battle that led to significant changes in Masimo's leadership and board composition. The investigation adds a layer of complexity to the aftermath of the proxy contest. While the investigation is directed at RTW Investments, its connection to Masimo's recent corporate governance changes means it remains a relevant development for stakeholders monitoring the company's strategic evolution. The content on BeyondSPX is for informational purposes only and should not be construed as financial or investment advice. We are not financial advisors. Consult with a qualified professional before making any investment decisions. Any actions you take based on information from this site are solely at your own risk.