SINTX Technologies, Inc. Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

A summary of the Company’s outstanding stock option activity for the three months ended March 31, 2022, and 2021 is as follows:

Summary of Stock Option Activity

				March 31, 2022
				Weighted- Average		Weighted- Average Remaining Contractual Life		Intrinsic
	Options			Exercise Price		(Years)		Value
As of December 31, 2021		833,892		$	3.91		8.7		87,553
Granted		357,000			0.49		10.0		-
Exercised		-			-		-		-
Forfeited		-			-		-		-
Expired		(3	)		139,237.86		-		-
As of March 31, 2022		1,190,889		$	2.38		8.9	$	114,500
Exercisable at March 31, 2022		387,212		$	6.02		8.3	$	44,652
Vested and expected to vest at March 31, 2022		1,178,659		$	2.44		8.9	$	117,100

			March 31, 2021
			Weighted- Average		Weighted- Average Remaining Contractual Life		Intrinsic
	Options		Exercise Price		(Years)		Value
As of December 31, 2020		465,393	$	5.53		9.3		-
Granted		368,500		1.93		10.0		-
Exercised		-		-		-		-
Forfeited		-		-		-		-
Expired		-		-		-		-
As of March 31, 2021		833,893	$	3.98		9.4	$	698,913
Exercisable at March 31, 2021		376	$	6,977.42		4.1	$	-
Vested and expected to vest at March 31, 2021		833,893	$	3.98		9.4	$	698,913

	March 31, 2022
Weighted-average risk-free interest rate		1.66	%
Weighted-average expected life (in years)		5.3-10
Expected dividend yield		-	%
Weighted-average expected volatility		130%-132	%

Unrecognized stock-based compensation as of March 31, 2022, is as follows (in thousands):