Thomas Harkin - 27 May 2021 Form 4 Insider Report for MASIMO CORP (MASI)

Role: Director
Signature: /s/ Micah Young, Attorney-In-Fact
Issuer symbol: MASI
Transactions as of: 27 May 2021
Net transactions value: $0
Form type: 4
Filing time: 01 Jun 2021, 18:47:42 UTC
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MASI	Common Stock	Options Exercise	$162,376	+749	+13%	$216.79	6,589	27 May 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	$162,376	-749	-100%	$216.79	0	27 May 2021	Common Stock	749		Direct	F1, F2

* 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.