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Share-based Payments (Tables)
6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Summary of Changes in Warrants and DSUs
The following is a summary of the changes in warrants during the six months ended June 30, 2020 and 2019:
Weighted average exercise price (C$)Number of warrants
Balance as of January 1, 2020$0.26  $18,066,662  
Balance as of June 30, 2020$0.26  $18,066,662  
Balance as of January 1, 2019$0.26  $25,457,623  
Exercise of warrants0.36  (7,390,961) 
Balance as of June 30, 2019$0.22  $18,066,662  
The following is a summary of the changes in DSUs from January 1, 2020 to June 30, 2020:
Number of DSUsFinancial liability
Balance as of January 1, 202033,397  $255  
Liabilities settled(8,484) (46) 
Loss (gain) on revaluation —  (56) 
Balance as of June 30, 202024,913  $153  
Summary of Outstanding Warrants
As of June 30, 2020, the Company had outstanding warrants as follows. For a description of the Altria Warrant, see Note 11.
Grant DateExpiry dateWeighted average exercise price (C$)Number of warrants
October 8 – 28, 2015October 8 – 28, 2020$0.31  $2,976,610  
May 13 – 27, 2016May 13 – 27, 20210.25  15,090,052  
As of June 30, 2020$0.26  $18,066,662  
Summary of the Changes in Options
The following is a summary of the changes during the six months ended June 30, 2020 and 2019:
Weighted average exercise price (C$)Number of optionsWeighted average remaining contractual term (years)
Balance as of January 1, 2020$4.84  14,149,502  2.56
Exercise of options2.05  (1,807,909) 
Cancellation, forfeiture and expiry of options15.78  (127,045) 
Balance as of June 30, 2020$5.13  12,214,548  2.05
Exercisable at June 30, 20203.42  8,688,645  1.78
Balance as of January 1, 2019$2.99  12,902,995  3.35
Issuance of options20.81  1,315,787  
Exercise of options3.76  (227,342) 
Cancellation, forfeiture and expiry of options1.63  (2,895) 
Balance as of June 30, 2019$4.66  13,988,545  3.04
Exercisable as of June 30, 20192.406,580,238  2.69
Summary of Fair Value of Options Issued
The fair value of the options issued was determined using the Black-Scholes option pricing model, using the following inputs:
For the six months ended June 30, 2019
Share price at grant date (per share)
C$20.65 - C$24.75
Exercise price (per option)
C$20.65 - C$24.75
Risk-free interest rate
1.51% - 1.62%
Expected life of options (in years)5
Expected annualized volatility80%
Expected dividend yield—%
Weighted average Black-Scholes value at grant date (per option)
C$13.29 - C$15.91
Forfeiture rate—%
Summary of Restricted Share Units Activity
The following is a summary of the changes in RSUs from January 1, 2020 to June 30, 2020:
Number of RSUsShare-based reserve
Balance as of January 1, 2020732,972  $889  
Issuance of RSUs279,277  —  
Vesting of issued RSUs —  1,482  
Balance as of June 30, 20201,012,249  $2,371