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Share-based Compensation | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Share-based Compensation |
17. | Share-based Compensation
a) | Description of share option plans
In July 2014, the Group adopted its Global Share Incentive Plan (the “Global Share Plan”), which permits the grant of options, restricted shares and restricted share units of the Company to relevant directors, officers, other employees and consultants of the Group. The maximum aggregate number of Class Z Ordinary Shares, which may be issued pursuant to all awards under the Global Share Plan, is 19,880,315 shares. In February 2018, the Group adopted its 2018 Share Incentive Plan (the “2018 Plan”) to provide additional incentives to employees, directors and consultants and promote the success of our business. The maximum aggregate number of Class Z Ordinary Shares, which may be issued pursuant to all awards under the 2018 Plan as at December 31, 2020, is 23,367,875 shares. Option awards are granted with an exercise price determined by the Board of Directors. Those option awards generally vest over a period of two to six years and expire in six to seven years. As of December 31, 2020, total unrecognized compensation expenses related to unvested awards granted under the Global Share Plan and the 2018 Plan, adjusted for estimated forfeitures, was RMB 3,787.3 million, which is expected to be recognized over a weighted-average period of 4.5 years and may be adjusted for future changes in estimated forfeitures.
b) | Valuation assumptions
The Group uses binomial option pricing model to determine the fair value of share options. The estimated fair value of each share option granted is estimated on the date of grant using the binomial option-pricing model with the following assumptions:
|  | For the Year Ended December 31, |
|  | 2018 |  |  | 2019 |  |  | 2020 |
Expected volatility |  |  | 47.8%-48.4% |  |  |  | 49.6%-52.1% |  |  |  | 50.1%-55.0% |
Weighted average volatility |  |  | 48.3% |  |  |  | 50.8% |  |  |  | 51.9% |
Expected dividends |  |  | — |  |  |  | — |  |  |  | — |
Risk-free rate |  |  | 2.6%-2.8% |  |  |  | 1.4%-2.4% |  |  |  | 0.4%-0.7% |
Contractual term (in years) |  |  | 6 |  |  |  | 6 |  |  |  | 6-7 |
The expected volatility at each grant date was estimated based on the annualized standard deviation of the daily return embedded in historical share prices of comparable peer companies with a time horizon close to the expected expiry of the term of the share options. The weighted average volatility is the expected volatility at the grant date weighted by the number of the share options. The Company has never declared or paid any cash dividends on its capital stock, and the Company does not anticipate any dividend payments in the foreseeable future. Contractual term is the remaining contract life of the share options. The Group estimated the risk-free interest rate based on the yield to maturity of U.S. treasury bonds denominated in US dollars at the share option grant date.
(c) | Share options activities
The following table presents a summary of the Group’s share options activities for the years ended December 31, 2018, 2019 and 2020:
|  | Employees |  |  | Senior Management |  |  | Consultants |  |  | Total |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  | (In thousands) |  |  | (In thousands) |  |  | (In thousands) |  |  | (In thousands) |  |  | US$ |  |  | (In years) |  |  | (RMB in thousands) |
Outstanding at January 1, 2018 |  |  | 8,124 |  |  |  | 10,595 |  |  |  | 700 |  |  |  | 19,419 |  |  |  | 0.0001 |  |  |  | 4.80 |  |  |  | 880,197 |
Granted |  |  | 2,587 |  |  |  | 620 |  |  |  | — |  |  |  | 3,207 |  |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,387 | ) |  |  | (5,543 | ) |  |  | (212 | ) |  |  | (8,142 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (683 | ) |  |  | (1,437 | ) |  |  | (50 | ) |  |  | (2,170 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2018 |  |  | 7,641 |  |  |  | 4,235 |  |  |  | 438 |  |  |  | 12,314 |  |  |  | 0.0001 |  |  |  | 4.46 |  |  |  | 1,233,028 |
Outstanding at January 1, 2019 |  |  | 7,641 |  |  |  | 4,235 |  |  |  | 438 |  |  |  | 12,314 |  |  |  | 0.0001 |  |  |  | 4.46 |  |  |  | 1,233,028 |
Granted |  |  | 2,464 |  |  |  | 730 |  |  |  | — |  |  |  | 3,194 |  |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Exercised |  |  | (1,352 | ) |  |  | (710 | ) |  |  | (193 | ) |  |  | (2,255 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (479 | ) |  |  | (600 | ) |  |  | — |  |  |  | (1,079 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 8,274 |  |  |  | 3,655 |  |  |  | 245 |  |  |  | 12,174 |  |  |  | 0.0001 |  |  |  | 4.13 |  |  |  | 1,581,408 |
Outstanding at January 1, 2020 |  |  | 8,274 |  |  |  | 3,655 |  |  |  | 245 |  |  |  | 12,174 |  |  |  | 0.0001 |  |  |  | 4.13 |  |  |  | 1,581,408 |
Granted |  |  | 6,966 |  |  |  | 8,700 |  |  |  | 50 |  |  |  | 15,716 |  |  |  | 2.9007 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,784 | ) |  |  | (1,643 | ) |  |  | (65 | ) |  |  | (4,492 | ) |  |  | 0.0001 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (1,101 | ) |  |  | — |  |  |  | — |  |  |  | (1,101 | ) |  |  | 0.4234 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2020 |  |  | 11,355 |  |  |  | 10,712 |  |  |  | 230 |  |  |  | 22,297 |  |  |  | 2.0236 |  |  |  | 5.41 |  |  |  | 12,177,047 |
Exercisable at December 31, 2020 |  |  | 830 |  |  |  | 130 |  |  |  | 155 |  |  |  | 1,115 |  |  |  | 0.0001 |  |  |  | 2.97 |  |  |  | 623,376 |
The weighted average grant date fair value of share options granted for the years ended December 31, 2018, 2019 and 2020 was RMB76.2 (US$11.7), RMB104.4 (US$15.0) and RMB262.0 (US$38.8) per share, respectively. It is the Group’s policy to issue new shares upon exercise of share options. The aggregate number of Class Z Ordinary Shares available for future grant under the Global Share Plan and the 2018 Plan was 6,062,751 as of December 31, 2020.

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