| Summary of stock option activity |
A summary of the restricted stock activity for the six months ended June 30, 2012 is as follows:
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Number of
Shares |
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Weighted-
Average
Grant Date
Fair Value |
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Outstanding at December 31, 2011
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578,616 |
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$ |
1.21 |
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Early exercised
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263,970 |
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2.38 |
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Vested
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|
(367,399 |
) |
|
|
1.30 |
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Repurchased
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|
(2,084 |
) |
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|
0.11 |
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Outstanding at June 30, 2012
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473,103 |
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$ |
1.80 |
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| Summary of the restricted stock activity |
The following tables present the
calculation of basic and diluted net income (loss) per share attributable to common stockholders (in thousands, except share and per share data):
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Three Months Ended June 30, |
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Six Months Ended June 30, |
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2012 |
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2011 |
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2012 |
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2011 |
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Numerator:
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Net income (loss)
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$ |
(8,724 |
) |
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$ |
2,036 |
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|
$ |
(14,364 |
) |
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$ |
5,027 |
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Accretion of redeemable convertible preferred stock
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|
(154 |
) |
|
|
(158 |
) |
|
|
(308 |
) |
|
|
(314 |
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Net income attributable to participating securities
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|
— |
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(1,520 |
) |
|
|
— |
|
|
|
(3,835 |
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Net income (loss) attributable to common stockholders - Basic
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$ |
(8,878 |
) |
|
$ |
358 |
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$ |
(14,672 |
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|
$ |
878 |
|
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Undistributed earnings reallocated to participating securities
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$ |
— |
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$ |
133 |
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|
$ |
— |
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|
$ |
331 |
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Net income (loss) attributable to common stockholders - Diluted
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$ |
(8,878 |
) |
|
$ |
491 |
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$ |
(14,672 |
) |
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$ |
1,209 |
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Denominator:
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Weighted-average shares outstanding - Basic
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27,788,547 |
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19,668,851 |
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26,452,100 |
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19,188,210 |
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Effect of potentially dilutive securities:
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Common stock options
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|
— |
|
|
|
9,915,374 |
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|
|
— |
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9,745,364 |
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|
|
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|
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Weighted-average shares outstanding - Diluted
|
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27,788,547 |
|
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|
29,584,225 |
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26,452,100 |
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28,933,574 |
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Net income (loss) per share attributable to common stockholders:
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Basic
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$ |
(0.32 |
) |
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$ |
0.02 |
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$ |
(0.55 |
) |
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$ |
0.05 |
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Diluted
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$ |
(0.32 |
) |
|
$ |
0.02 |
|
|
$ |
(0.55 |
) |
|
$ |
0.04 |
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