SINTX Technologies, Inc. Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

A summary of the Company’s outstanding stock option activity for the years ended December 31, 2021 and 2020 is as follows:

Summary of Stock Option Activity

				December 31, 2021
				Weighted- Average Exercise		Weighted- Average Remaining Contractual Life		Intrinsic
	Options			Price		(Years)		Value
As of December 31, 2020		465,393		$	5.53		9.3		511,518
Granted		368,500			1.93		10.0		-
Exercised		-			-		-		-
Forfeited		-			-		-		-
Expired		(1	)		139,158.00		-		-
As of December 31, 2021		833,892		$	3.91		8.7	$	87,553
Exercisable at December 31, 2021		268,185		$	10.04		8.3	$	46,449
Vested and expected to vest at December 31, 2021		830,292		$	3.91		8.7	$	86,703

				December 31, 2020
				Weighted- Average Exercise		Weighted- Average Remaining Contractual Life		Intrinsic
	Options			Price		(Years)		Value
As of December 31, 2019		377		$	7,446.69		5.3		-
Granted		465,017			0.47		10.0		-
Exercised		-			-		-		-
Forfeited		-			-		-		-
Expired		(1	)		-		-		-
As of December 31, 2020		465,393		$	5.53		9.3	$	511,518
Exercisable at December 31, 2020		376		$	6,977.42		4.3	$	-
Vested and expected to vest at December 31, 2020		465,393		$	5.53		9.3	$	511,518

	Year Ended
	December 31, 2021
Weighted-average risk-free interest rate	0.73%-0.85	%
Weighted-average expected life (in years)	5.3-5.9
Expected dividend yield	-	%
Weighted-average expected volatility	138%-139	%

Unrecognized stock-based compensation as of December 31, 2021, is as follows (in thousands):