Masimo Reports First Quarter 2008 Financi...(iod during which single class ...)

during which single class

of equity securities was

outstanding NA $8,791 $9,097 $8,791

Weighted average common

shares outstanding -

single class NA 5,109,018 51,204,665 55,109,018

Basic net income per share

for period during which

single class of equity

securities was

outstanding NA $0.16

Basic net income per

common share $0.14 $0.16 $0.18 $0.16

Diluted net income per

common share:

Weighted average common

shares outstanding - two

class method 16,592,163 NA

Diluted common share

equivalent: stock options 4,070,367 NA

20,662,530 NA

Diluted earnings per share

for period during which

two classes of equity

securities were

outstanding $0.11 NA

Net income for period

during which single class

of equity securities was

outstanding NA $8,791 $9,097 $8,791

Weighted average common

shares outstanding -

single class NA 55,109,018 51,204,665 55,109,018

Diluted common share

equivalent: stock options NA 4,815,323 4,070,368 4,815,323

NA 59,924,341 55,275,033 59,924,341

Diluted net income per

share for period during

which single class of

equity securities was

outstanding NA $0.15

Diluted net income per

common share $0.11 $0.15 $0.16 $0.15