MASIMO CORP — Director's Dealing 2011

Jun 23, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2011-06-21

Reporting Person: Allan Anthony (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-06-21	Common Stock	S	26476	$30.7764	Disposed	3524	Direct
2011-06-21	Common Stock	M	30000	$23.97	Acquired	30000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-06-21	Non-qualified Stock Option (Right to Buy)	$23.97	M	30000	Disposed	2020-05-17	Common Stock (30000)	Direct

Footnotes

F1: This option was granted on May 17, 2010 ans is exercisable as the option vests. This option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.

F2: The shares covered by this Form 4 have been transacted pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2011, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.