Note 5 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Options Outstanding			Exercise Price per share		Weighted Average Price per share		Aggregate intrinsic Value(1)
Balance, December 31, 2022		28,484,549		$	0.12 – 0.43	$	0.19
Granted		8,219,920			0.17 – 0.20	$	0.18
Balance, September 30, 2023		36,704,469			0.12 – 0.43	$	0.19
Unvested		(4,648,922	)		0.12 – 0.27	$	0.15
Vested, September 30, 2023		32,055,547			0.12 – 0.43	$	0.19	$	278,000
Balance, December 31, 2021		23,186,142			0.16 – 0.43	$	0.19
Granted		4,748,212			0.18 – 0.27	$	0.22
Balance, September 30, 2022		27,934,354			0.12 – 0.43	$	0.19

	Options Outstanding			Exercise price per share		Weighted Average Price per share		Aggregate intrinsic Value(1)
Balance, December 31, 2022		1,904,085		$	0.28 – 0.69	$	0.56
Expired		(340,000	)		0.28 - 0.30		0.30
Balance, September 30, 2023		1,564,085			0.28 – 0.69	$	0.61	$	—
Balance, December 31, 2021		2,879,246			0.23 – 0.94	$	0.49
Expired		(975,161	)		0.28 - 0.35		0.36
Balance, September 30, 2022		1,904,085		$	0.24 – 0.94	$	0.56

	Non-plan Options outstanding			Exercise price per share		Weighted averageprice per share		Aggregate intrinsic Value(1)
Balance, December 31, 2022		19,023,829		$	0.12 – 0.83	$	0.39
Granted		60,040			0.18 – 0.20		0.20
Expired		(1,205,550	)		0.30		0.30
Balance, September 30, 2023		17,878,319		$	0.12 – 0.83	$	0.39
Unvested		(507,500	)		0.45		0.45
Vested, September 30, 2023		17,370,819		$	0.12 – 0.83	$	0.39	$	28,000
Balance, December 31, 2021		20,119,207		$	0.17 – 1.00	$	0.41
Granted		105,797			0.23 - 0.27		0.26
Balance, September 30, 2022		20,225,004		$	0.17 – 1.00	$	0.39