Quarterly report pursuant to Section 13 or 15(d)

7. STOCKHOLDERS' EQUITY (Details 1)

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7. STOCKHOLDERS' EQUITY (Details 1)
9 Months Ended
Sep. 30, 2019
$ / shares
shares
Shares  
Outstanding at beginning of period | shares 4,342,231
Forfeited | shares (152,903)
Expired | shares (12,985)
Granted | shares 1,493,100
Exercised | shares (29,904)
Outstanding at end of period | shares 5,639,539
Options exercisable | shares 3,036,543
Weighted Average Exercise Price  
Outstanding at beginning of period | $ / shares $ 5.16
Forfeited | $ / shares 3.94
Expired | $ / shares 4.88
Granted | $ / shares 3.49
Exercised | $ / shares 2.84
Outstanding at end of period | $ / shares 4.76
Options exercisable | $ / shares $ 5.67