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SHARE-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2017

SHARE-BASED COMPENSATION

Summary of the option activity

		Number of options			Weighted average exercise price			Weighted average grant-date fair value per option
					(RMB)			(RMB)
Options outstanding at January 1, 2017			28,589,782			5.2			3.2
Granted			166,667			5.3			7.6
Exercised			(376,984	)		5.2			1.9
Forfeited			(19,000	)		5.2			1.9
​	​	​	​	​	​	​	​	​	​	​
Options outstanding at September 30, 2017			28,360,465			5.2			3.2
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​
Options vested and expect to vest at September 30, 2017			28,360,465			5.2			3.2
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

Summary of information with respect to stock options outstanding and stock options exercisable

		Number of options			Weighted average remaining contractual life			Weighted average exercise price
					(years)			(RMB)
Options outstanding and exercisable			28,360,465			2.5			5.2
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

Summary of the restricted share activity

		Number of Shares			Weighted average grant-date fair value per share
					(RMB)
Unvested at January 1, 2017			12,910,080			6.0
Granted			13,871,860			5.2
Vested			(2,017,920	)		8.1
Forfeited			(186,800	)		7.2
​	​	​	​	​	​	​	​
Unvested at September 30, 2017			24,577,220			5.4
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

Assumptions used to estimate fair value of the restricted shares

Grant date:				July 2017
Risk-free rate of return				1.29 - 1.63%
Volatility				20.43 - 21.48%
Expected dividend yield				—
Share price at grant date				US$1.191
				(RMB8.0)
Expected term				2 - 4 years

Summary of share-based compensation expenses

		Nine-month periods ended September 30,
		2016			2017
Costs of revenue			1,169			7,365
Selling and marketing expenses			5,159			12,779
General and administrative expenses			50,859			20,842
Research and development expenses			—			408
​	​	​	​	​	​	​	​
Total share-based compensation expenses			57,187			41,394
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

X

- Definition

Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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