Convertible Preferred Stock and Stockholders’ Equity (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Summary of Reserved Shares of Common Stock

The Company has reserved shares of common stock for conversion of convertible preferred stock, exercise of warrants, and the issuance of options granted under the Company’s stock option plan and its stock purchase plan as follows:

	December 31,		December 31,
	2020		2019
Warrants		15,385		46,155
Series A Convertible Preferred Stock		45,278,096		46,398,904
Series B Convertible Preferred Stock		5,610,121		5,610,121
Stock award plans		2,054,941		3,216,028
Employee Stock Purchase Plan		229,136		261,603
		53,187,679		55,532,811

Summary of Option and Stock Appreciation Rights Activity

A summary of the option and stock appreciation rights activity for the year ended December 31, 2020 is as follows:

	Number of Options/SARs			Range of Exercise Price				Weighted Average Exercise Price per Share
Outstanding, December 31, 2019		1,857,599		$	0.74	-	$36.20	$	2.22
Granted		917,250		$	3.22	-	$5.13	$	4.49
Exercised		(133,852	)	$	0.74	-	$2.15	$	1.27
Forfeited		(184,018	)	$	0.74	-	$36.20	$	5.17
Outstanding, December 31, 2020		2,456,979		$	0.74	-	$35.20	$	2.90

Summary of Option and Stock Appreciation Rights Outstanding by Range of Exercise Price

A summary of the options and stock appreciation rights outstanding by range of exercise price is as follows:

	Year Ended December 31, 2020
									Weighted
									Average
			Weighted Average		Weighted Average		Number of Options		Exercise Price Per
Range of Exercise Prices	Options Outstanding		Remaining Life		Exercise Price		Currently Exercisable		Vested Share
$0.00 - $1.00		568,877		7.17	$	0.74		373,065	$	0.74
$1.01 - $2.00		64,333		4.74	$	1.71		57,642	$	1.79
$2.01- $4.00		883,374		7.93	$	2.11		398,197	$	2.06
$4.01 - $10.00		923,500		8.87	$	4.50		55,750	$	4.09
$10.01 - $20.00		-		-	$	-		-	$	-
$30.01 - $40.00		16,895		0.27	$	33.65		16,895	$	33.65
		2,456,979		7.97	$	2.90		901,549	$	2.21

Summary of Restricted Stock Unit Activity

A summary of the restricted stock unit activity for the year ended December 31, 2020 is as follows:

	Number of Restricted Stock Units			Weighted Average Grant Date Fair Value per Unit
Outstanding, December 31, 2019		840,712		$	1.28
Granted		420,000		$	4.82
Vested		(147,989	)	$	2.44
Forfeited		(250	)	$	0.78
Outstanding, December 31, 2020		1,112,473		$	2.46