MASIMO CORP — Director's Dealing 2011

Oct 31, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2011-10-27

Reporting Person: Coleman Jon (Pres -WW Sales,Mkt & Clin Rsch)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-10-28	Common Stock	M	21	—	Acquired	328	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-10-27	Non-qualified Stock Option (Right to buy)	$20.19	A	30000	Acquired	2021-10-27	Common Stock (30000)	Direct

Footnotes

F1: This option was granted on October 27, 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.

F2: Between January 1, 2011 and October 28, 2011, Mr. Coleman acquired 21 shares of Masimo Corporation common stock at various prices under the Masimo Retirement Savings Plan. The information in this report is based on a plan statement dated October 28, 2011.