MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

4D Advisors, LLC's Holding History (CIK: 0001938268)

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

Q2 2025

Shares 45,000 Value ($000) $7,570 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 30,000 Value ($000) $4,998 Avg Close $173.51 Range $159.29 - $194.88

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	45,000	$7,570	$159.72	$133.70 - $174.50
Q1 2025	30,000	$4,998	$173.51	$159.29 - $194.88