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Stock Awards and Stock-Based Compensation (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2023

Dec. 31, 2022

Stock Awards and Stock-Based Compensation

Schedule of stock options activity

​

​	​	​	​	​	​	​	​	​	​	​
​		​		​	​		Weighted		​	​
​	​	​	​	Weighted		​	Average	​	​	​
​	​	​	​	Average		​	Remaining	​	​	​
​		Options		Exercise Price			Contractual		Aggregate
​	​	Outstanding	​	Per Share		​	Life (years)	​	Intrinsic Value
Balance as of January 1, 2022		395,002	​	$	6.40		2.42	​	$	5,365,737
Options granted		7,443	​		3.20		​	​		​
Options exercised		(15,121)	​		6.30		​	​		​
Options canceled and forfeited	​	(215)	​	​	4.40	​	​	​	​	​
Balance as of December 31, 2022	​	387,109	​	​	6.40	​	1.45	​	​	0
Options granted	​	2,647	​	​	3.01	​	​	​	​	​
Options exercised	​	(1,230)	​	​	3.25	​	​	​	​	​
Options canceled and forfeited		(756)	​		7.94		​	​		​
Balance as of March 31, 2023		387,770	​		6.37		1.21	​		0
Options vested and exercisable as of March 31, 2023		387,770	​	$	6.37		1.21	​	$	0

​

​

​	​	​	​	​	​	​	​	​	​	​	​
​		​	​		​	​		Weighted		​	​
​	​	​	​	​	Weighted		​	Average	​	​	​
​	​	​	​	​	Average		​	Remaining	​	​	​
​	​	Options		​	Exercise Price		​	Contractual	​	Aggregate
​	​	Outstanding		​	Per Share		​	Life (years)	​	Intrinsic Value
Balance as of January 1, 2021	​	​	346,806	​	$	6.30		3.21	​	$	527,450
Options granted	​		52,347	​		7.55			​
Options exercised	​		—	​		—			​
Options canceled and forfeited	​		(4,151)	​		3.85			​
Balance as of December 31, 2021	​	​	395,002	​	​	6.40		2.42	​	​	5,365,737
Options granted	​	​	7,443	​	​	3.20	​	​	​	​	​
Options exercised	​	​	(15,121)	​	​	6.30	​	​	​	​	​
Options canceled and forfeited	​	​	(215)	​	​	4.40	​	​	​	​	​
Balance as of December 31, 2022	​	​	387,109	​	​	6.40	​	1.45	​	​	0
Options vested and exercisable as of December 31, 2022	​	​	387,109	​	$	6.40		1.45	​	$	0

​

Schedule of outstanding RSU activity

​

​	​	​
​		RSU Outstanding Number of Shares
Balance as of January 1, 2022	​	126,900
Granted	​	211,700
Vested (issued)	​	(46,036)
Forfeited	​	—
Balance as of December 31, 2022	​	292,564
Granted	​	4,627
Vested (issued)	​	—
Forfeited	​	(20,601)
Balance as of March 31, 2023	​	276,590

​

​

​	​	​
​		RSU Outstanding Number of Shares
Balance as of January 1, 2021		—
Granted		126,900
Vested (issued)		—
Forfeited		—
Balance as of December 31, 2021		126,900
Granted		211,700
Vested (issued)		(46,036)
Forfeited		—
Balance as of December 31, 2022		292,564

​

Schedule of fair value of options granted

​

​	​	​	​	​
Fair value of Class A Common Stock		$	2.65—3.57	​
Exercise price	​	$	2.93 — 3.09	​
Risk free interest rate	​	​	3.91 — 4.23	%
Expected dividend yield	​	​	0.00	%
Expected volatility	​	​	92.90 — 96.45	%
Expected term	​	​	3 Years	​

​

The following assumptions were used to calculate the fair value of options granted during the year ended December 31, 2022:

​	​	​	​
Fair value of Class A Shares of Common Stock	$	3.05 – 22.90	​
Exercise price	$	3.10 – 3.75	​
Risk free interest rate		1.25 - 4.38	%
Expected dividend yield		0	%
Expected volatility		52.80 – 104.50	%
Expected term		3 Years	​

​

Schedule of stock-based compensation expense

​

​	​	​	​	​	​	​
​	​	Three months ended March 31,
​		2023			2022
Cost of services	​	$	494	​	$	2,174
Research and development	​	​	18,855	​	​	59,860
Selling, general, and administrative	​	​	40,225	​	​	225,752
Total stock-based compensation expense	​	$	59,574	​	$	287,786

​

​	​	​	​	​	​	​
​		For the years ended December 31,
​	​	2022			2021
Cost of services provided	​	$	21,721	​	$	160,504
Research and development expense	​		292,084	​		493,336
Selling, general, and administrative	​		2,085,258	​		2,126,799
Total stock-based compensation expense	​	$	2,399,063	​	$	2,780,639

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