MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

DARK FOREST CAPITAL MANAGEMENT LP's Holding History (CIK: 0001853322)

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

Q4 2025

Shares 16,385 Value ($000) $2,131 Avg Close $143.19 Range $129.77 - $157.72

Q3 2025

Shares 10,009 Value ($000) $1,477 Avg Close $151.39 Range $135.34 - $172.55

Q1 2023

Shares 510 Value ($000) $94 Avg Close $168.70 Range $144.51 - $184.97

Q2 2022

Shares 5 Value ($000) $1 Avg Close $133.79 Range $112.07 - $154.51

Q4 2021

Shares 93 Value ($000) $27 Avg Close $284.79 Range $262.52 - $305.21

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	16,385	$2,131	$143.19	$129.77 - $157.72
Q3 2025	10,009	$1,477	$151.39	$135.34 - $172.55
Q1 2023	510	$94	$168.70	$144.51 - $184.97
Q2 2022	5	$1	$133.79	$112.07 - $154.51
Q4 2021	93	$27	$284.79	$262.52 - $305.21