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Share-based compensation (Tables)
12 Months Ended
Dec. 31, 2017
Founder  
Share-based compensation  
Schedule of assumptions used to calculate estimated fair value of each option grant

 

 

2015

 

Expected volatility

 

36%~38%

 

Risk-free interest rate (per annum)

 

2.74%~2.79%

 

Exercise multiples

 

2.0

 

Expected dividend yield

 

 

Expected term (in years)

 

10.0

 

Fair value of the underlying shares on the date of option grants (US$)

 

16.70~16.93

 

 

Vesting Based On Service | Employee and non-employee  
Share-based compensation  
Schedule of RSUs activity

 

 

Number of RSUs

 

Weighted-Average
Grant-Date Fair Value

 

Unvested at January 1, 2015

 

32,118,491

 

5.80

 

Granted

 

18,595,642

 

14.35

 

Vested

 

(7,368,335

)

5.05

 

Forfeited

 

(3,934,276

)

9.73

 

 

 

 

 

 

 

Unvested at December 31, 2015

 

39,411,522

 

9.58

 

 

 

 

 

 

 

Granted

 

59,254,734

 

12.82

 

Vested

 

(8,692,792

)

7.98

 

Forfeited

 

(7,125,648

)

10.66

 

 

 

 

 

 

 

Unvested at December 31, 2016

 

82,847,816

 

11.97

 

 

 

 

 

 

 

Granted

 

41,450,212

 

16.27

 

Vested

 

(12,005,700

)

10.14

 

Forfeited

 

(6,246,436

)

13.42

 

 

 

 

 

 

 

Unvested at December 31, 2017

 

106,045,892

 

13.77

 

 

 

 

 

 

 

 

Schedule of service-based share options activity

Share options

 

Number of share
options

 

Weighted
Average
Exercise Price

 

Weighted
Average
Remaining
Contractual
Term

 

Aggregate
Intrinsic Value

 

 

 

 

 

US$

 

Year

 

US$

 

Outstanding as of January 1, 2015

 

26,201,252

 

4.37

 

8.5

 

189,729

 

Granted

 

5,652,500

 

13.17

 

 

 

 

 

Exercised

 

(2,694,404

)

4.07

 

 

 

 

 

Forfeited or cancelled

 

(1,724,726

)

6.07

 

 

 

 

 

Expired

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding as of December 31, 2015

 

27,434,622

 

6.10

 

8.1

 

275,040

 

 

 

 

 

 

 

 

 

 

 

Granted

 

 

 

 

 

 

 

 

Exercised

 

(2,820,648

)

3.97

 

 

 

 

 

Forfeited or cancelled

 

(2,954,958

)

7.21

 

 

 

 

 

Expired

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding as of December 31, 2016

 

21,659,016

 

6.23

 

7.3

 

142,433

 

 

 

 

 

 

 

 

 

 

 

Granted

 

 

 

 

 

 

 

 

Exercised

 

(4,116,816

)

5.20

 

 

 

 

 

Forfeited or cancelled

 

(432,092

)

5.92

 

 

 

 

 

Expired

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding as of December 31, 2017

 

17,110,108

 

6.49

 

6.2

 

243,327

 

 

 

 

 

 

 

 

 

 

 

Vested and expected to vest as of December 31, 2017

 

16,110,208

 

6.41

 

6.2

 

230,350

 

Exercisable as of December 31, 2017

 

8,777,612

 

5.31

 

5.9

 

135,192

 

 

Schedule of assumptions used to calculate estimated fair value of each option grant

 

 

2015

 

Expected volatility

 

33%~50%

 

Risk-free interest rate (per annum)

 

2.17%~2.65%

 

Exercise multiples

 

2.0~2.8

 

Expected dividend yield

 

 

Expected term (in years)

 

10.0

 

Fair value of the underlying shares on the date of option grants (US$)

 

11.57~14.69

 

 

Vesting Based On Performance | Employee and non-employee  
Share-based compensation  
Schedule of RSUs activity

 

 

Number of RSUs

 

Weighted-Average
Grant-Date Fair Value

 

 

 

 

 

 

 

Unvested at January 1, 2015

 

1,466,658

 

6.33

 

Granted

 

 

 

Vested

 

(188,936

)

6.33

 

Forfeited

 

(401,358

)

6.33

 

 

 

 

 

 

 

Unvested at December 31, 2015

 

876,364

 

6.33

 

 

 

 

 

 

 

Granted

 

 

 

Vested

 

(118,540

)

6.33

 

Forfeited

 

(447,822

)

6.33

 

 

 

 

 

 

 

Unvested at December 31, 2016

 

310,002

 

6.33

 

 

 

 

 

 

 

Granted

 

 

 

Vested

 

(96,516

)

6.33

 

Forfeited

 

 

 

 

 

 

 

 

 

Unvested at December 31, 2017

 

213,486

 

6.33