MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

PERCEPTIVE ADVISORS LLC's Holding History (CIK: 0001224962)

Note: Option positions (PUT/CALL) are excluded.

Q1 2017

Shares 5,945 Value ($000) $554 Avg Close $82.32 Range $66.79 - $96.68

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	5,945	$554	$82.32	$66.79 - $96.68