MASIMO CORP — Director's Dealing 2012

Jul 27, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2012-07-27

Reporting Person: Lee Yongsam (EVP, CIO, Regulatory Affairs)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-07-25	Common Stock	M	12000	$2.75	Acquired	12000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-07-25	Incentive Stock Option (right to buy)	$2.75	M	12000	Disposed	2012-08-07	Common Stock (12000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	70000	Direct

Footnotes

F1: This option was granted on August 7, 2002 and is fully vested and exerciseable as of August 7, 2007. The option vested over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.