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Equity (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of weighted-average assumptions used in calculation of fair value of stock options

The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:

		2019		2018
Expected life		5.75 years		6.20 years
Weighted average volatility		71	%	70	%
Forfeiture rate		20	%	15	%
Weighted average risk-free interest rate		2.52	%	2.74	%
Expected dividend rate		0	%	0	%

Summary of status of non-vested stock options

A summary of the status of the Company’s non-vested stock options at December 31 and changes during the year is as follows:

		2019					2018
				Weighted					Weighted
				Average					Average
		Number of		Grant Date			Number of		Grant Date
		Options		Fair Value			Options		Fair Value
Non-vested stock options at January 1		292,315		$	2.61		238,871		$	4.27
Granted		1,328,718		$	1.32		224,000		$	1.94
Vested		(902,268)		$	1.40		(122,647)		$	4.15
Exercised		—			—		—			—
Forfeited/Expired/Exchanged		(48,780)		$	2.14		(47,909)		$	3.82
Non-vested stock options at December 31		669,985		$	1.71		292,315		$	2.61

Schedule of unrecognized compensation cost

At December 31, 2019, there was $300,000 of total unrecognized compensation cost related to non-vested stock option-based compensation arrangements granted under the Plan that will be recognized over a remaining weighted average period of 1.4 years. That cost is expected to be recognized in future years as follows:

2020			207,000
2021			84,000
2022			9,000
		$	300,000

Schedule of recognized compensation cost

The recognized compensation cost associated with the Plan is as follows:

		2019			2018
Research and development		$	174,000		$	145,000
General and administrative			394,000			79,000
Effect on net loss		$	568,000		$	224,000
Effect on net loss per share		$	0.02		$	0.01

Summary of warrants outstanding

The following table summarizes the number of warrants, the weighted average exercise price, and weighted average life (in years) by price for both total outstanding warrants and total exercisable warrants at December 31,2019:

		Total Outstanding Warrants
				Wtd. Avg.			Remaining
				Exercise			Life
Exercise Price		Warrants		Price			(in years)
$1.80		80,000		$	1.80		1.14

Equity Incentive Plan [Member]

Schedule of share-based compensation activity

Activity under the Plan is as follows:

		2019		2018
Reserved but unissued shares under the Plan, beginning of year		1,296,462		191,656
Increases in the number of authorized shares under the Plan		1,236,346		1,106,088
Grants of stock options		(1,328,718)		(224,000)
Stock option forfeitures		77,937		337,583
Exercise of stock options		—		—
Stock grants		—		(114,865)
Stock grant forfeitures		—		—
Reserved but unissued shares under the Plan, end of year		1,282,027		1,296,462

Warrant [Member]

Schedule Of warrant activity

A summary of the Company’s warrant activity and related information is as follows:

		2019					2018
				Weighted					Weighted
				Average					Average
				Exercise					Exercise
		Warrants		Price			Warrants		Price
Outstanding at January 1		2,495,784		$	3.98		2,495,784		$	3.98
Granted		—			—		—			—
Exercised		—			—		—			—
Forfeited/Expired		(2,415,784)		$	4.05		—			—
Outstanding at December 31		80,000		$	1.80		2,495,784		$	3.98

Stock Options [Member]

Schedule of stock option activity

		2019		2018
Expected life		5.75 years		6.20 years
Weighted average volatility		71	%	70	%
Forfeiture rate		20	%	15	%
Weighted average risk-free interest rate		2.52	%	2.74	%
Expected dividend rate		0	%	0	%

A summary of the Company’s stock option activity and related information is as follows:

		2019							2018
							Weighted							Weighted
							Average							Average
		Options to		Weighted			Remaining		Options to		Weighted			Remaining
		Purchase		Average			Contractual		Purchase		Average			Contractual
		Common		Exercise			Life (in		Common		Exercise			Life (in
		Stock		Price			years)		Stock		Price			years)
Outstanding at January 1		880,277		$	4.32		6.49		993,860		$	4.81		6.94
Granted		1,328,718		$	1.32		9.16		224,000		$	1.94		9.23
Exercised		—			—		—		—			—		—
Forfeited/Expired/Exchanged		(77,937)		$	2.11		—		(337,583)		$	4.19		—
Outstanding at December 31		2,131,058		$	2.53		7.99		880,277		$	4.32		9.04
Exercisable at December 31		1,461,073		$	2.90		7.58		587,962		$	5.17		6.49

Inducement Stock Options [Member]

Schedule of weighted-average assumptions used in calculation of fair value of stock options

The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:

		2019
Expected life		5.75	years
Weighted average volatility		71	%
Forfeiture rate		20	%
Weighted average risk-free interest rate		2.55	%
Expected dividend rate		0	%

Consultant Plan [Member]

Schedule of share-based compensation activity

Activity under the Consultant Plan is as follows:

		2019		2018
Reserved but unissued shares under the Consultant Plan at January 1		199,705		99,159
Increases in the number of authorized shares under the Consultant Plan		437		110,546
Stock grants		(10,000)		(10,000)
Reserved but unissued shares under the Consultant Plan at Period End		190,142		199,705

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