MASIMO CORP — Director's Dealing 2011

Feb 24, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2011-02-22

Reporting Person: CAHILL EDWARD L (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-22	Non-qualified Stock Option (Right to buy)	$30.06	A	20000	Acquired	2021-02-22	Common Stock (20000)	Direct

Footnotes

F1: This option was granted on February 22, 2011 and 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.