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Net loss per share (Tables) | 6 Months Ended
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Jun. 30, 2020
Net loss per share |
Schedule of basic and diluted net loss attributable to ordinary shareholders | Basic and diluted net loss per share attributable to ordinary shareholders was calculated as follows (in thousands, except share and per share amounts):
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to ordinary shareholders |  | $ | (12,115) |  | $ | (10,217) |  | $ | (23,438) |  | $ | (16,720)
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average ordinary shares outstanding, basic and diluted |  |  | 18,077,770 |  |  | 7,298,139 |  |  | 18,024,314 |  |  | 4,101,564
Net loss per share attributable to ordinary shareholders, basic and diluted |  | $ | (0.67) |  | $ | (1.40) |  | $ | (1.30) |  | $ | (4.08)
Schedule of antidilutive securities excluded from computation of net loss per share attributable to ordinary shareholders |
|  | Six Months Ended
|  | June 30,
|  | 2020 |  | 2019
Warrants to subscribe for convertible preferred shares (as adjusted to reflect the impact of the share capital reorganization and issuance of bonus shares (Note 6))(1)(2) |  | — |  | 114,320
Options to purchase ordinary shares |  | 3,654,012 |  | 2,615,949
|  | 3,654,012 |  | 2,730,269
| (1) |  | On March 7, 2019, the holders of the Series B1 warrants to subscribe for Series B1 Preferred Shares agreed that 50% of the warrants would be exercised in conjunction with the IPO and 50% of the warrants would expire.
At June 30, 2019, 80,000 warrants are outstanding which are exercisable into 114,320 ordinary shares.

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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