MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Boston Partners's Holding History (CIK: 0001386060)

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

Q2 2014

Shares 296,283 Value ($000) $6,992 Avg Close $24.80 Range $21.45 - $28.78

Q1 2014

Shares 297,692 Value ($000) $8,130 Avg Close $28.52 Range $25.08 - $32.20

Q2 2013

Shares 123,685 Value ($000) $2,622 Avg Close $21.04 Range $19.03 - $22.70

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	296,283	$6,992	$24.80	$21.45 - $28.78
Q1 2014	297,692	$8,130	$28.52	$25.08 - $32.20
Q2 2013	123,685	$2,622	$21.04	$19.03 - $22.70