Stock Option Plans and Agreements (Tables)

6 Months Ended

Jun. 30, 2021

Stock Transactions

Stock option valuation assumptions

Risk-free interest rate	0.16% -0.38%
Expected dividend yield	0%
Expected stock price volatility	100%
Expected life of options	2.75 – 5.25 years

Stock option activity

	Number of Options Outstanding			Weighted Average Exercise Price		Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 31, 2020		12,430,500		$	.05
Granted		1,705,000			.21
Exercised		(284,000	)		.02
Forfeited		(823,000	)		.08
Expired		(45,000	)		.10
Outstanding at June 30, 2021		12,983,500		$	.07	3.3 years	$	2,006,500
At June 30, 2021 - vested or
expected to vest		12,983,500		$	.07	3.3 years	$	2,006,500
Exercisable		11,923,500		$	.06	3.2 years	$	1,965,000