v2.4.0.6

Net income (loss) per share attributable to common stockholders: | 12 Months Ended
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Dec. 31, 2011
Net income (loss) per share attributable to common stockholders: |
Net income (loss) per share attributable to common stockholders: |
14. Net income (loss) per share attributable to common stockholders: The following table sets forth the computation of basic and diluted net income (loss) per share attributable to common stockholders for the periods indicated:
|  | Years ended December 31, |
--- | --- | --- | ---
|  | 2011 |  | 2010 |  | 2009 |
|  | (in thousands) |
Numerator: |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to common stockholders, basic |  | $ | 4,662 |  | $ | 10,554 |  | $ | (4,511 | )
Accretion of convertible preferred stock |  |  | — |  |  | 5,020 |  |  | — |
Net income (loss) attributable to Boingo Wireless, Inc., diluted |  | $ | 4,662 |  | $ | 15,574 |  | $ | (4,511 | )
Denominator: |  |  |  |  |  |  |  |  |  |
Weighted average common stock, basic |  |  | 24,014 |  |  | 5,834 |  |  | 5,801 |
Effect of dilutive convertible preferred stock |  |  | — |  |  | 22,846 |  |  | — |
Effect of dilutive stock options |  |  | 3,457 |  |  | 3,204 |  |  | — |
Effect of dilutive common stock warrants |  |  | 10 |  |  | 15 |  |  | — |
Weighted average common stock, diluted |  |  | 27,481 |  |  | 31,899 |  |  | 5,801 |
Net income (loss) per share attributable to common stockholders: |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.19 |  | $ | 1.81 |  | $ | (0.78 | )
Diluted |  | $ | 0.17 |  | $ | 0.49 |  | $ | (0.78 | )
The following outstanding securities were not included in the computation of diluted net income (loss) per share as the inclusion would have been anti-dilutive for the periods indicated:
|  | Years ended December 31, |
--- | --- | --- | ---
|  | 2011 |  | 2010 |  | 2009 |
|  | (in thousands) |
Convertible preferred stock using the if-converted method |  |  | 7,699 |  |  | — |  |  | 22,846 |
Stock options, out-of-the-money using the treasury stock method |  |  | 2,172 |  |  | — |  |  | 5,281 |
Common stock warrants |  |  | — |  |  | — |  |  | 26 |
Preferred stock warrants |  |  | 26 |  |  | 26 |  |  | 26 |
Total |  |  | 9,897 |  |  | 26 |  |  | 28,179 |

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