MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Durable Capital Partners LP's Holding History (CIK: 0001798849)

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

Q3 2025

Shares 620,619 Value ($000) $91,572 Avg Close $151.39 Range $135.34 - $172.55

Q2 2025

Shares 1,163,898 Value ($000) $195,791 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 1,125,619 Value ($000) $187,528 Avg Close $173.51 Range $159.29 - $194.88

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	620,619	$91,572	$151.39	$135.34 - $172.55
Q2 2025	1,163,898	$195,791	$159.72	$133.70 - $174.50
Q1 2025	1,125,619	$187,528	$173.51	$159.29 - $194.88