Note 4 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

	Nine Months Ended September 30, 2023
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)		Aggregate Intrinsic Value
Outstanding, January 1, 2023		702,805		$	4.42		5.5	$	—
Granted		1,339,500			0.32
Cancelled/Forfeited		(1,060,465	)		0.73
Expired		(4,600	)		54.92
Outstanding, September 30, 2023		977,240		$	2.57		6.6	$	—
Exercisable, September 30, 2023		457,365		$	5.09		3.4	$	—

	Nine Months Ended September 30, 2023
	Number of Shares		Weighted Average Grant-Date Fair Value
Unvested, January 1, 2023		90,000	$	0.99
Granted		—
Vested		—		—
Unvested, September 30, 2023		90,000	$	0.99