| Net income available to common stockholders |
The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the years ended December 31, 2019, 2018 and 2017:
| | | | | | | | | | | | | | Year Ended December 31, | | 2019 | | 2018 | | 2017 | | (in thousands, except unit and per unit amounts) | Numerator: | | | | | | Net income attributable to Kilroy Realty Corporation | $ | 195,443 |
| | $ | 258,415 |
| | $ | 164,612 |
| Total preferred dividends | — |
| | — |
| | (13,363 | ) | Allocation to participating securities (1) | (2,119 | ) | | (2,004 | ) | | (1,975 | ) | Numerator for basic and diluted net income available to common stockholders | $ | 193,324 |
| | $ | 256,411 |
| | $ | 149,274 |
| Denominator: | | | | | | Basic weighted average vested shares outstanding | 103,200,568 |
| | 99,972,359 |
| | 98,113,561 |
| Effect of dilutive securities | 648,600 |
| | 510,006 |
| | 613,770 |
| Diluted weighted average vested shares and common stock equivalents outstanding | 103,849,168 |
| | 100,482,365 |
| | 98,727,331 |
| Basic earnings per share: | | | | | | Net income available to common stockholders per share | $ | 1.87 |
| | $ | 2.56 |
| | $ | 1.52 |
| Diluted earnings per share: | | | | | | Net income available to common stockholders per share | $ | 1.86 |
| | $ | 2.55 |
| | $ | 1.51 |
|
________________________ | | (1) | Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs. |
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