|
Weighted average
|
Weighted average
|
Weighted average
|
||||||||||||||||||||||
|
Number of
options
|
of exercise price
|
Number of
options
|
of exercise price
|
Number of
options
|
of exercise price
|
|||||||||||||||||||
|
(US Dollars)
|
(US Dollars)
|
(US Dollars)
|
||||||||||||||||||||||
|
2015
|
2016
|
2017
|
||||||||||||||||||||||
|
Balance as at January 1
|
638,865
|
15.86
|
2,873,190
|
7.40
|
2,764,334
|
7.15
|
||||||||||||||||||
|
Granted during the year
|
2,660,000
|
6.69
|
63,000
|
7.79
|
-
|
-
|
||||||||||||||||||
|
Forfeited during the year
|
(292,798
|
)
|
19.52
|
(171,856
|
)
|
11.43
|
(146,334
|
)
|
11.26
|
|||||||||||||||
|
Exercised during the year
|
(132,877
|
)
|
5.67
|
-
|
-
|
(1,654,335
|
)
|
7.40
|
||||||||||||||||
|
Total options outstanding as at December 31
|
2,873,190
|
7.40
|
2,764,334
|
7.15
|
963,665
|
8.07
|
||||||||||||||||||
|
Total of exercisable options as at December 31*
|
170,190
|
15.13
|
1,020,000
|
7.89
|
106,000
|
12. 98
|
||||||||||||||||||