MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

GLUSKIN SHEFF & ASSOC INC's Holding History (CIK: 0000905790)

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

Q4 2025

Shares 25,805 Value ($000) $3,356 Avg Close $143.19 Range $129.77 - $157.72

Q3 2025

Shares 27,923 Value ($000) $4,120 Avg Close $151.39 Range $135.34 - $172.55

Q2 2025

Shares 8,224 Value ($000) $1,383 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 17,455 Value ($000) $2,908 Avg Close $173.51 Range $159.29 - $194.88

Q4 2024

Shares 37,061 Value ($000) $6,126 Avg Close $157.91 Range $131.60 - $180.97

Q3 2024

Shares 14,425 Value ($000) $1,932 Avg Close $116.03 Range $101.61 - $135.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	25,805	$3,356	$143.19	$129.77 - $157.72
Q3 2025	27,923	$4,120	$151.39	$135.34 - $172.55
Q2 2025	8,224	$1,383	$159.72	$133.70 - $174.50
Q1 2025	17,455	$2,908	$173.51	$159.29 - $194.88
Q4 2024	37,061	$6,126	$157.91	$131.60 - $180.97
Q3 2024	14,425	$1,932	$116.03	$101.61 - $135.78