MASIMO CORP — Director's Dealing 2012

Jun 4, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASIMO CORP (MASI)
CIK: 0000937556
Period of Report: 2012-06-01

Reporting Person: KIANI JOE E (Director, CEO and Chairman of the Board)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-06-01	Common Stock	P	50000	$18.4657	Acquired	2830291	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	798241	Direct
Common Stock	1029114	Indirect
Common Stock	403095	Indirect
Common Stock	9000	Indirect
Common Stock	9914	Indirect

Footnotes

F1: Shares held in 3 Trusts for which Mr. Kiani is the sole Trustee.

F2: Shares held by an immediate family member for which Mr. Kiani exercises voting and investment control.

F3: Shares held under the Masimo Retirement Savings Plan. The information is based on a plan statement dated May 31, 2012.