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Ordinary Shares and Equity Incentive Plan (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of Stock by Class | We have the following ordinary shares reserved for future issuance:
| As of December 31,
| 2023 |  | 2022
Warrants to purchase ordinary shares(1) | 499,500 |  |  | 1,775,475 |
Share options and RSUs issued and outstanding under the 2013 Plan | 15,981,269 |  |  | 20,062,824 |
Share options and RSUs issued and outstanding under the 2021 Plan | 16,299,528 |  |  | 13,134,652 |
Remaining shares available for future issuance under the 2021 Plan | 8,766,560 |  |  | 8,674,132 |
Total ordinary shares reserved | 41,546,857 |  | 43,647,083
_________________ (1)Includes the warrants to purchase ordinary shares and warrants issued to customers.
Share-based Payment Arrangement, Option, Activity | A summary of share options under our equity incentive plan and related information is as follows:
| Share Options Outstanding
| Outstanding Share Options |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
| (in thousands, except share, life and per share data)
Balance as of December 31, 2022 | 13,785,214 |  |  | $ | 2.17 |  |  | 6.1 |  | $ | 34,326 |
Options exercised | (3,010,478) |  |  | $ | 1.22 |  |  |  |  |
Options forfeited | (405,202) |  |  | $ | 3.72 |  |  |  |  |
Balance as of December 31, 2023 | 10,369,534 |  |  | $ | 2.39 |  |  | 5.5 |  | $ | 24,303 |
Exercisable as of December 31, 2023 | 8,849,876 |  |  | $ | 2.13 |  |  | 5.2 |  | $ | 22,904 |
There were no share options granted during the years ended December 31, 2023 or December 31, 2022.
Fair Value Measurement Inputs and Valuation Techniques | The Black-Scholes assumptions used to value the employee share options at the grant dates are as follows:
| Year Ended December 31,
| 2021
Expected term (years) | 5.44 - 6.60
Expected volatility | 67.26% - 68.52%
Risk-free interest rate | 0.99% - 1.12%
Expected dividend yield | 0.00%
Schedule of Unvested Restricted Stock Units Roll Forward | A summary of RSU activity, including activity under our equity incentive plan, and related information is as follows:
| Number of Shares |  | Weighted-Average Grant-Date Fair Value Per Share
Unvested as of December 31, 2022 | 19,412,262 |  |  | $ | 9.06 |
Granted | 10,904,664 |  |  | $ | 5.43 |
Vested | (6,365,261) |  |  | $ | 7.28 |
Forfeited | (2,040,402) |  |  | $ | 6.31 |
Unvested as of December 31, 2023 | 21,911,263 |  |  | $ | 8.02 |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award | Share-based compensation expense by line item in the consolidated statements of operations is summarized as follows:
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
| (in thousands)
Cost of revenue | $ | 770 |  |  | $ | 621 |  |  | $ | 216 |
Research and development | 13,152 |  |  | 10,005 |  |  | 4,246 |
Sales and marketing | 19,420 |  |  | 18,253 |  |  | 10,710 |
General and administrative | 29,068 |  |  | 38,588 |  |  | 18,186 |
Total share-based compensation expense | $ | 62,410 |  |  | $ | 67,467 |  |  | $ | 33,358 |

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