MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 16,147 Value ($000) $2,100 Avg Close $143.19 Range $129.77 - $157.72

Q2 2024

Shares 1,848 Value ($000) $233 Avg Close $131.69 Range $112.85 - $147.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	16,147	$2,100	$143.19	$129.77 - $157.72
Q2 2024	1,848	$233	$131.69	$112.85 - $147.89