Bilal Muhsin - 12 May 2025 Form 4 Insider Report for MASIMO CORP (MASI)

Role: Chief Operating Officer
Signature: /s/ Micah W. Young, Attorney-In-Fact
Issuer symbol: MASI
Transactions as of: 12 May 2025
Net transactions value: -$1,632,781
Form type: 4
Filing time: 14 May 2025, 17:32:56 UTC
Previous filing: 14 Mar 2025
Next filing: 07 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Muhsin Bilal	Chief Operating Officer	C/O MASIMO CORPORATION, 52 DISCOVERY, IRVINE	/s/ Micah W. Young, Attorney-In-Fact	14 May 2025	0001734507

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MASI	Common Stock	Options Exercise	$345,100	+10,000	+41%	$34.51	34,172	12 May 2025	Direct	F1
transaction	MASI	Common Stock	Sale	$631,512	-3,881	-11%	$162.72	30,291	12 May 2025	Direct	F1, F2
transaction	MASI	Common Stock	Sale	$914,664	-5,594	-18%	$163.51	24,697	12 May 2025	Direct	F1, F3
transaction	MASI	Common Stock	Sale	$86,605	-525	-2.1%	$164.96	24,172	12 May 2025	Direct	F1, F4

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	Non-Qualified Stock Option (Right to Buy)	Options Exercise	$345,100	-10,000	-100%	$34.51	0	12 May 2025	Common Stock	10,000	$34.51	Direct	F5

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

Explanation of Responses:

Id	Content
F1	The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of December 13, 2024, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.
F2	The price reported in Column 4 represents the weighted average purchase price per share. The actual sale prices ranged from a low of $162.16 per share to a high of $163.14 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
F3	The price reported in Column 4 represents the weighted average purchase price per share. The actual sale prices ranged from a low of $163.19 per share to a high of $163.90 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
F4	The price reported in Column 4 represents the weighted average purchase price per share. The actual sale prices ranged from a low of $164.56 per share to a high of $165.27 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
F5	This option was granted on May 13, 2015 and was exercisable as the option vested. This option vested over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.