Basic And Diluted Net Loss Per Share

6 Months Ended

Jun. 30, 2011

Basic And Diluted Net Loss Per Share

Basic And Diluted Net Loss Per Share

NOTE 3 - BASIC AND DILUTED NET LOSS PER SHARE

Basic net loss per share has been computed by dividing the net loss by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is calculated by dividing net loss by the weighted average number of shares of common stock and potential dilutive securities outstanding during the period.

Because Sangamo is in a net loss position, diluted net loss per share excludes the effects of common stock equivalents consisting of options, which are all anti-dilutive. Had Sangamo been in a net income position, diluted earnings per share would have included the shares used in the computation of basic net loss per share as well as an additional 2,517,970 and 1,849,267 shares for the six months ended June 30, 2011 and 2010, respectively, related to outstanding options.