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Net loss per share attributable to common stockholders | 12 Months Ended
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Sep. 30, 2021
Net loss per share attributable to common stockholders |
Net loss per share attributable to common stockholders |
13. | Net loss per share attributable to common stockholders
The following table sets forth the computation of the Company’s basic and diluted net loss per share attributable to common stockholders: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended September 30,
(in thousands, except per share data) |  | 2021 |  | 2020 |  | 2019
Numerator: |  | ​ |  |  | ​ |  |  | ​ |
Net loss attributable to common stockholders | ​ | $ | (152,098) | ​ | $ | (139,931) | ​ | $ | (107,669)
Denominator: | ​ |  |  | ​ |  |  | ​ |  |
Weighted-average shares used in computing net loss per share, basic and diluted | ​ |  | 48,251 | ​ |  | 39,190 | ​ |  | 27,462
Net loss per share attributable to common stockholders, basic and diluted | ​ | $ | (3.15) | ​ | $ | (3.57) | ​ | $ | (3.92)
​ The potentially dilutive common shares that were excluded from the calculation of diluted net loss per share because their effect would have been antidilutive for the periods presented are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended September 30,
(in thousands) |  | 2021 |  | 2020 |  | 2019
Shares subject to options to purchase common stock |  | 3,131 |  | 3,948 |  | 3,551
Unvested restricted shares of common stock |  | — |  | — |  | 24
Unvested restricted stock units |  | 707 |  | 569 |  | 462
Unvested shares of common stock issued upon early exercise of stock options |  | 3 |  | 17 |  | 38
Shares subject to employee stock purchase plan |  | 27 |  | 33 |  | 76
Shares subject to warrants to purchase common stock |  | — |  | 26 |  | 26
Total |  | 3,868 |  | 4,593 |  | 4,177
​

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