Michelle Brennan

Companies

• MASIMO CORPBoard member Jun 29, 2023 to now³
• Cardinal HealthBoard member Sep 2022 to now⁴
• MASIMO CORPChief executive officer Nov 13, 2024 to Feb 14, 2025⁵
• CoupaBoard member Oct 6, 2020 to Feb 28, 2023⁶

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Cardinal Health CAH8,086 shares⁷$2.1M at $253.88Nov 5, 2025
• MMASIMO CORP0 shares⁸Jun 10, 2026
• CCoupa COUP0 shares⁹Feb 28, 2023

As of each latest filing. The line shows shares held over time.

Recent filings

• Jun 10, 2026Returned to company 9,309 shares at $180.00 of MASIMO CORP⁸
• Apr 29, 2026Exercised options 1,225 shares of MASIMO CORP¹⁰
• Nov 5, 2025Granted 1,067 shares of Cardinal Health⁷
• Aug 13, 2025Bought 100 shares at $155.25 of MASIMO CORP¹¹
• Aug 12, 2025Bought 100 shares at $150.35 of MASIMO CORP¹¹
• Apr 29, 2025Exercised options 1,790 shares of MASIMO CORP¹²
• Feb 12, 2025Shares withheld for tax 4,816 shares at $179.51 of MASIMO CORP¹³
• Feb 12, 2025Granted 8,916 shares of MASIMO CORP¹³
• Nov 6, 2024Granted 1,730 shares of Cardinal Health¹⁴
• Jun 26, 2024Exercised options 1,228 shares of MASIMO CORP¹⁵
• Nov 15, 2023Granted 1,965 shares of Cardinal Health¹⁶
• Feb 28, 2023Returned to company 1,038 shares of Coupa⁹
• Feb 28, 2023Returned to company 804 shares of Coupa⁹
• Nov 15, 2022Bought 200 shares at $74.72 of Cardinal Health¹⁷
• Nov 14, 2022Bought 200 shares at $76.30 of Cardinal Health¹⁷
• Nov 10, 2022Bought 150 shares at $79.74 of Cardinal Health¹⁸
• Nov 9, 2022Granted 2,308 shares of Cardinal Health¹⁸
• Sep 15, 2022Granted 466 shares of Cardinal Health¹⁹
• May 25, 2022Exercised options 804 shares of Coupa²⁰
• Mar 16, 2022Bought 125 shares at $77.40 of Coupa²¹
• Mar 16, 2022Bought 250 shares at $79.28 of Coupa²¹
• Dec 1, 2021Bought 60 shares at $274.68 of Coupa²²
• Mar 12, 2021Bought 50 shares at $192.09 of Coupa²²
• Dec 29, 2020Bought 40 shares at $339.13 of Coupa²²