Stockholders' Deficit (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Summary of Stock Based Compensation Recognized in Consolidated Statement of Operations

Stock-based compensation expense (including employee stock purchase plan expense) recorded in the accompanying condensed consolidated statements of operations for three and six months ended June 30, 2022 and 2021 was as follows:

Summary of Stock Option Plans Activity Including Inducement Award Activity

A summary of the Company’s stock option activity (including inducement award activity) for the six months ended June 30, 2022 is as follows:

	Number of Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Balance at December 31, 2021		559,336		$	13.93		8.2	$	30,267
Granted		93,000			1.66
Exercised		-			-
Forfeited		(49,220	)		5.41
Expired/Cancelled		(35,864	)		33.37
Balance at June 30, 2022		567,252		$	11.43		8.1	$	21,590
Exercisable at June 30, 2022		313,518		$	16.69		7.4	$	4,562

Summary of Restricted Stock Unit ("RSU") Award Activity

The following table summarizes restricted stock unit (“RSU”) award activity for the six months ended June 30, 2022:

	Number of Shares			Weighted- Average Grant Date Fair Value Per Share
Balance at December 31, 2021		31,177		$	6.93
Granted		5,000			0.69
Released		(8,296	)		9.60
Forfeited		(7,500	)		5.20
Balance at June 30, 2022		20,381		$	4.95
Vested and unissued at June 30, 2022		2,881		$	11.26