MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

MAI Capital Management's Holding History (CIK: 0001040197)

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

Q4 2025

Shares 139 Value ($000) $18 Avg Close $143.19 Range $129.77 - $157.72

Q3 2025

Shares 77 Value ($000) $11 Avg Close $151.39 Range $135.34 - $172.55

Q2 2025

Shares 202 Value ($000) $34 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 73 Value ($000) $12 Avg Close $173.51 Range $159.29 - $194.88

Q4 2024

Shares 73 Value ($000) $12 Avg Close $157.91 Range $131.60 - $180.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	139	$18	$143.19	$129.77 - $157.72
Q3 2025	77	$11	$151.39	$135.34 - $172.55
Q2 2025	202	$34	$159.72	$133.70 - $174.50
Q1 2025	73	$12	$173.51	$159.29 - $194.88
Q4 2024	73	$12	$157.91	$131.60 - $180.97