Stockholders’ Equity (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Equity [Abstract]

Summary of Warrant Activity

The Financing Warrants outstanding and exercisable as of September 30, 2021 are summarized as follows:

				Outstanding
	Exercise Price		Expiration Date	Classified as Derivative Liabilities (Shares)		Classified within Stockholders’ Equity (Shares)		Total Exercisable (Shares)
MDB Warrants	$	0.20	November 4,2021		-		327,490		327,490
Strome Warrants		0.50	June 15, 2023		1,500,000		-		1,500,000
B. Riley Warrants		0.33	October 18, 2025		875,000		-		875,000
MDB Warrants		1.15	October 19, 2022		-		119,565		119,565
MDB Warrants		2.50	October 19, 2022		-		60,000		60,000
Total outstanding and exercisable					2,375,000		507,055		2,882,055

A summary of the Financing Warrants activity during the years ended December 31, 2020 and 2019 is as follows:

						Weighted
						Average
				Weighted		Remaining
	Number			Average		Contractual
	of			Exercise		Life
	Shares			Price		(in Years)
Financing Warrants outstanding at January 1, 2019		3,949,018		$	0.64		4.81
Exercised		(1,066,963	)
Financing Warrants outstanding at December 31, 2019		2,882,055			0.80		3.95
Financing Warrants outstanding at December 31, 2020		2,882,055			0.60		2.94
Financing Warrants exercisable at December 31, 2020		2,882,055			0.60		2.94

Summary of Restricted Stock Award Activity

A summary of the restricted stock award activity during the years ended December 31, 2020 and 2019 is as follows:

	Number of Shares						Weighted Average Grant-Fair
	Unvested			Vested			Value Date
Restricted stock awards outstanding at January 1, 2019		6,309,874			10,484,046		$	0.50
Issued		833,333			-			0.48
Vested		(3,926,542	)		3,926,542
Forfeited		(825,000	)		(402,512	)
Restricted stock awards outstanding at December 31, 2019		2,391,665			14,008,076			0.56
Issued		562,500			-			0.18
Vested		(2,237,500	)		2,237,500
Restricted stock awards subject to repurchase		-			(1,064,549	)
Forfeited		(399,998	)		(746,813	)
Restricted stock awards outstanding at December 31, 2020		316,667			14,434,214			0.42

Schedule of Common Stock Financing Warrants Outstanding and Exercisable

The Financing Warrants outstanding and exercisable as of December 31, 2020 are summarized as follows:

				Outstanding
	Exercise Price		Expiration Date	Classified as Derivative Liabilities (Shares)		Classified within Stockholders’ Equity (Shares)		Total Exercisable (Shares)
MDB Warrants	$	0.20	November 4, 2021		-		327,490		327,490
Strome Warrants		0.50	June 15, 2023		1,500,000		-		1,500,000
B. Riley Warrants		1.00	October 18, 2025		875,000		-		875,000
MDB Warrants		1.15	October 19, 2022		-		119,565		119,565
MDB Warrants		2.50	October 19, 2022		-		60,000		60,000
Total outstanding and exercisable					2,375,000		507,055		2,882,055