| Computations of basic and diluted per share |
A reconciliation of basic and diluted common shares used in the computation of per share data follows:
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Three Months Ended
September 30, |
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Nine Months Ended
September 30, |
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2015 |
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2014 |
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2015 |
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2014 |
Basic weighted-average shares |
183,519,768 |
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182,988,516 |
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184,415,040 |
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182,082,141 |
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Effect of dilutive securities: |
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Options to purchase common stock |
— |
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18,424,579 |
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— |
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15,289,845 |
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Warrants to purchase common stock |
— |
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9,122,277 |
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— |
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7,871,369 |
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Dilutive potential common shares |
— |
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27,546,856 |
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— |
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23,161,214 |
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Weighted average common shares outstanding and dilutive potential common shares |
183,519,768 |
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210,535,372 |
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184,415,040 |
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205,243,355 |
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