MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Rhenman & Partners Asset Management AB's Holding History (CIK: 0001599882)

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

Q3 2014

Shares 135,000 Value ($000) $2,873 Avg Close $22.83 Range $19.30 - $24.75

Q2 2014

Shares 87,000 Value ($000) $2,053 Avg Close $24.80 Range $21.45 - $28.78

Q1 2014

Shares 63,875 Value ($000) $1,744 Avg Close $28.52 Range $25.08 - $32.20

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2014	135,000	$2,873	$22.83	$19.30 - $24.75
Q2 2014	87,000	$2,053	$24.80	$21.45 - $28.78
Q1 2014	63,875	$1,744	$28.52	$25.08 - $32.20