The following table summarizes the number of share options, the weighted average exercise price, and the changes that were made in the option plans to employees, consultants and directors:
|
|
2017
|
2016
|
2015
|
||||||||||||||||||||||
|
Number of options
|
Weighted average exercise prices ($)
|
Number of options
|
Weighted average exercise prices ($)
|
Number of options
|
Weighted average exercise prices ($)
|
|||||||||||||||||||
|
Outstanding at January 1
|
4,439,884
|
9.50
|
4,970,028
|
9.65
|
3,770,762
|
9.75
|
||||||||||||||||||
|
Grants
|
1,537,250
|
5.08
|
377,500
|
6.94
|
1,455,250
|
8.90
|
||||||||||||||||||
|
Exercised
|
(269,738
|
)
|
2.18
|
(76,447
|
)
|
2.45
|
(53,408
|
)
|
5.58
|
|||||||||||||||
|
Forfeited
|
(601,096
|
)
|
10.22
|
(831,197
|
)
|
9.87
|
(202,576
|
)
|
7.15
|
|||||||||||||||
|
Outstanding at December 31
|
5,106,300
|
8.47
|
4,439,884
|
9.50
|
4,970,028
|
9.65
|
||||||||||||||||||
|
Exercisable at December 31
|
3,146,823
|
10.73
|
3,203,850
|
9.18
|
2,794,672
|
8.79
|
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