MASIMO CORP — Director's Dealing 2024

Mar 2, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2024-02-28

Reporting Person: KIANI JOE E (Director, CEO and Chairman of the Board)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-28	Common Stock	A	10050	—	Acquired	376105	Direct
2024-02-28	Common Stock	F	3929	$128.70	Disposed	372176	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-03-01	Non-Qualified Stock Option (Right to Buy)	$126.49	A	57382	Acquired	2034-03-01	Common Stock (57382)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	46818	Indirect
Common Stock	352919	Indirect
Common Stock	359000	Indirect
Common Stock	2250291	Indirect
Common Stock	10366	Indirect
Common Stock	51735	Indirect

Footnotes

F1: On February 26, 2021, the Reporting Person was granted performance restricted stock units which vested on February 28, 2024 based on the Issuer's achievement of certain FY2023 pre-established performance objectives.

F2: These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of shares upon the vesting of certain performance restricted stock units.

F3: Shares held in three trusts for which Mr. Kiani is the sole Trustee.

F4: Shares held in one trust for which Mr. Kiani is the sole trustee.

F5: Shares held in Masimo Retirement Savings Plan.

F6: This option was granted on March 1, 2024 and is exercisable as the option vests. The option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.