Share capital (Tables)

6 Months Ended

Jun. 30, 2020

Weighted average exercise price, and the weighted average remaining contractual life

			Outstanding		Weighted
			Weighted		average
			average		remaining
			exercise		contractual
	Number		Price		life (in years)
Outstanding, December 31, 2019		6,090,000	$	1.78		5.61
Expired / Cancelled		-		-		-
Granted		410,000		2.34		9.44
Outstanding, June 30, 2020		6,500,000	$	1.81		5.37
Options exercisable		6,210,416	$	1.78		5.17

Stock and stock option-based compensation expense

	Three months				Six months
	ended June 30,				ended June 30,
Employee expenses	2020		2019		2020		2019
Stock options and compensation granted in:
2015		375,172		609,389		804,050		1,286,823
2018		–		–		-		13,038
2019		-		680,290				680,290
2020		59,802		-		238,434		-
Total stock-based compensation expense recognized	$	434,974	$	1,289,679	$	1,042,484	$	1,980,151

Stock-based compensation expense

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Stock-based compensation pertaining to general and administrative	$	187.586	$	984,984	$	402,025	$	1,323,701
Stock-based compensation pertaining to research and development		247,388		304,695		640,459		656,450
Total	$	434,974	$	1,289,679	$	1,042,484	$	1,980,151