Note 4 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

	Six Months Ended June 30 , 20 20
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in 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	8.0	$	593,250
Exercisable at end of period		114,870		$	25.20	5.5	$	6,768

	Six Months Ended June 30 , 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