Julie Shimer - May 27, 2021 Form 4 Insider Report for MASIMO CORP (MASI)

Role: Director
Signature: /s/ Micah Young, Attorney-In-Fact
Stock symbol: MASI
Transactions as of: May 27, 2021
Transactions value $: $0
Form type: 4
Date filed: 6/1/2021, 05:35 PM
Next filing: Jun 21, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MASI	Common Stock	Options Exercise	$162K	+749	+57.44%	$216.79	2.05K	May 27, 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MASI	Restricted Stock Units	Options Exercise	-$162K	-749	-100%	$216.79	0	May 27, 2021	Common Stock	749		Direct	F1, F2
transaction	MASI	Restricted Stock Units	Award	$0	+922		$0.00	922	May 27, 2021	Common Stock	922		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU.
F2	These RSUs were granted on May 29, 2020 and vested in full on May 27, 2021, the date of the next annual meeting of stockholders following the date of grant.
F3	These RSUs were granted on May 27, 2021 and will vest in full on the earlier of the first anniversary of the grant date or the date of the next annual meeting of stockholders following the date of grant.