Accounting for Share-Based Payments (Tables)

3 Months Ended

Mar. 31, 2020

Accounting for Share-Based Payments

Schedule of stock based compensation expense

	Three Months Ended
	March 31,
	2020		2019
General and administrative	$	5,910	$	10,365
Research and development		2,336		7,141
Total stock-based compensation expense	$	8,246	$	17,506

Summary of stock option activity and of changes in stock options outstanding under the Plan

							Weighted				Weighted
							Average				Average
	Number of	Exercise Price					Exercise Price		Intrinsic		Remaining
	Options	Per Share					Per Share		Value		Contractual Term
Balance outstanding, December 31, 2019	41,271	$	3.24	-	$	2,452.80	$	194.83	$	43,182	8.42	years
Granted	—		—	-	$	—	$	—	$	—
Forfeited	—		—		$	—	$	—		—
Cancelled	—	$	—	-	$	—	$	—		—
Balance outstanding, March 31, 2020	41,271	$	3.24	-	$	2,452.80	$	209.07	$	—	8.33	years
Vested awards and those expected to vest at March 31, 2020	39,913	$	3.24	-	$	2,452.80	$	216.06	$	—	8.30	years
Vested and exercisable at March 31, 2020	14,415	$	3.24	-	$	2,452.80	$	586.07	$	—	6.52	years