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Net Loss Per Share Attributable to Common Stockholders | 12 Months Ended
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Dec. 31, 2018
Net Loss Per Share Attributable to Common Stockholders |
Net Loss Per Share Attributable to Common Stockholders | 12. Net Loss Per Share Attributable to Common Stockholders The following table summarizes the computation of basic and diluted net loss per share attributable to common stockholders of the Company (in thousands, except share and per share amounts):
|  | December 31,
|  | 2018 |  | 2017
Numerator: |  |  |  |  |  |
Net loss |  | $ | (22,799) |  |  | (15,469)
Denominator: |  |  |  |  |  |
Weighted average number of common shares, basic and diluted |  |  | 1,369,846 |  |  | 1,369,212
Net loss per common share attributable to common stockholders, basic and diluted |  | $ | (16.64) |  | $ | (11.30)
The Company’s potential dilutive securities, which include preferred stock and common stock options, have been excluded from the computation of diluted net loss per share as the effect would be anti‑dilutive. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at period end, from the computation of diluted net loss per share attributable to common stockholders for the period indicated because including them would have had an anti‑dilutive effect:
|  | December 31,
|  | 2018 |  | 2017
Preferred stock |  | 15,560,569 |  | 4,978,957
Options to purchase common stock |  | 242,079 |  | 64,783
Total |  | 15,802,648 |  | 5,043,746

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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