MASIMO CORP: Update on the Danaher Acquisition

1. What happened?

Masimo Corp’s path has changed. The company previously planned to spin off its consumer electronics business, including the Sound United portfolio. Instead, Masimo has been acquired. As of June 10, 2026, Danaher Corporation owns Masimo. Masimo is no longer a public company and now operates as a subsidiary of Danaher.

2. What does this mean for shareholders?

If you owned Masimo stock (ticker: MASI), your shares were automatically cancelled. In exchange, you receive $180.00 in cash per share, minus any required taxes.

You do not need to do anything to receive this payment. Your brokerage firm handles the process automatically. The cash will appear in your account, and Masimo stock is no longer listed on the Nasdaq. You can no longer buy or sell Masimo shares.

3. Why did this happen?

Danaher Corporation is a global leader in science, technology, and healthcare. By buying Masimo, Danaher adds Masimo’s medical monitoring tools—such as its SET® pulse oximetry and brain monitoring platforms—to its own healthcare business. This move ends Masimo’s time as an independent company. It now joins a larger organization that can use its global reach to grow Masimo’s operations.

4. Who is affected?

• Investors: Your ownership stake is gone. You are no longer a shareholder, and you no longer have a financial interest in Masimo’s future performance.
• Employees: Masimo now operates under Danaher’s leadership. Employees must follow the policies and strategic direction set by the new parent company.
• Customers: Hospitals and clinics using Masimo’s medical devices should see no change in service. The products and support teams remain in place under Danaher’s ownership.

5. What should investors know now?

• The trade is over: The MASI ticker is inactive. If you still see the ticker in your brokerage account, it simply confirms the merger is complete and the stock is off the market.
• Verify your account: Check your brokerage statements to ensure you received the $180.00 per share payment. If the funds are missing, contact your broker’s corporate actions department.
• Tax implications: This sale is a taxable event. You will owe taxes on the difference between your original purchase price and the $180.00 per share you received. Because tax rules depend on how long you held the stock and your personal situation, please talk to a tax professional before filing your taxes.

Final Thought for Investors: Since Masimo is no longer a publicly traded company, there is no longer an opportunity to invest in it directly. If you are looking for exposure to the medical technology sector, you may want to research Danaher Corporation (DHR) or other similar companies in the healthcare space. Always remember to review their latest financial filings and consult with a financial advisor to see if they align with your personal investment goals.

Disclaimer: I am an AI, not a financial advisor. This summary is for informational purposes only and does not constitute financial advice. Always do your own research or talk to a professional before making investment decisions.