Note 4 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

	T hree Months Ended March 31, 20 20
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value
Outstanding at beginning of period		238,470		$	17.38		7.2	$	—
Granted		195,000			1.06
Exercised		—			—
Canceled and Forfeited		(1,500	)		1.06
Expired		(500	)		30.80
Outstanding at end of period		431,470		$	10.04		8.3	$	—
Exercisable at end of period		112,290		$	25.54		5.7	$	—

	Three Months Ended March 31, 20 20
	Number of Shares			Weighted Average Grant-Date Fair Value
Unvested at beginning of period		15,000		$	2.75
Granted		10,000			1.06
Vested		(15,000	)		2.75
Forfeited		—			—
Unvested at end of period		10,000		$	1.06