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Stock Options (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of stock option

		Number of options				Weighted average exercise price				Weighted average contractual term (years)				Aggregate intrinsic value
Outstanding at January 1, 2021			2,595,700				1.92								2,491,026
Granted			592,348				2.52
Exercise			(30,999	)			0.81								68,278
Forfeited			(43,334	)			2.13								53,952
Outstanding at September 30, 2021			3,113,715				2.04				6.94				3,855,698
Vested and exercisable at September 30, 2021			2,127,537				2.03				7.02				2,850,630
Outstanding at January 1, 2020			2,004,318			$	1.72							$	2,542,361
Granted			691,046				2.52
Forfeited			(65,829	)			0.91								20,048
Expired			(6,666	)			0.79								6,032
Outstanding at September 30, 2020			2,622,869			$	1.95				7.73			$	1,209,562
Vested and exercisable at September 30, 2020			1,676,871			$	1.97				8.04			$	1,000,844

Schedule of measured fair value of each option award grant using the black-scholes-merton (BSM) pricing model

		Nine Months ended
		September 30,
		2021				2020
Exercise price		$	2.38 to 3.09			$	1.74 to 2.89
Expected life			5 years				5 years
Expected volatility			92	%			73	%
Dividend yield			0	%			0	%
Risk-free interest rate			0.31% to 0.98	%			0.28% to 1.72	%

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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