Quarterly report pursuant to Section 13 or 15(d)

Stockholders' deficit - Warrants activity (Details)

v3.20.2
Stockholders' deficit - Warrants activity (Details)
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Warrants  
Warrants outstanding (in shares) | shares 16,981,854
Issued (in shares) | shares 6,125,339
Exercised (in shares) | shares (250,000)
Terminated (in shares) | shares (2,958,334)
Warrants outstanding (in shares) | shares 19,898,859
Weighted Average Exercise Price  
Warrants outstanding (in dollars per share) | $ / shares $ 3.23
Issued (in dollars per share) | $ / shares 0.91
Exercised (in dollars per share) | $ / shares (0.10)
Terminated (in dollars per share) | $ / shares (5.12)
Warrants outstanding (in dollars per share) | $ / shares $ 2.13