MASIMO CORP — Director's Dealing 2018

Feb 3, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2018-02-01

Reporting Person: Lee Yongsam (EVP & CIO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-01	Common Stock	M	10000	$30.06	Acquired	79000	Direct
2018-02-01	Common Stock	S	10000	$92.954	Disposed	69000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-01	Non-Qualified Stock Option (Right to Buy)	$30.06	M	10000	Disposed	2021-02-22	Common Stock (10000.0)	Direct

Footnotes

F1: The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of August 21, 2017, 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 sale price per share. The actual sale prices ranged from a low of $92.39 per share to a high of $93.84 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 transaction was effected.

F3: This option was granted on February 22, 2011 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.