Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Share capital - Changes in options (Details)

v3.20.1
Share capital - Changes in options (Details) - Stock options - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of classes of share capital [line items]    
Number of options, Options outstanding, beginning 4,756,174 28,598,750
Number of options, Options granted 8,755,000 1,307,424
Number of options, Options exercised (137,304) (6,198)
Number of options, Options expired and forfeited (190,555) (143,802)
Number of options, Options cancelled (275,000) (25,000,000)
Number of options, Options outstanding, ending 12,908,315 4,756,174
Weighted average exercise price, Options outstanding, beginning $ 2.73 $ 0.40
Weighted average exercise price, Options granted 3.00 9.29
Weighted average exercise price, Options exercised 0.54 2.00
Weighted average exercise price, Options expired and forfeited 7.28 3.03
Weighted average exercise price, Options cancelled 11.75 0.37
Weighted average exercise price, Options outstanding, ending $ 2.07 $ 2.73