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Equity-based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Equity-based Compensation

Schedule of fair value of options granted using the Black-Scholes option pricing model

​

​	​	​	​	​
​	​	Six Months Ended June 30,
​		2022		2021
Fair value of common stock	​	$1.92 – $3.05	​	$1.75 – $6.15
Expected volatility	​	91.09% – 92.72%	​	100.82% – 101.83%
Risk-free interest rate	​	1.87% –  3.25%	​	0.67% – 1.06%
Dividend yield	​	0.00%	​	0.00%
Expected term (years)	​	5.50 – 6.08	​	5.00 – 6.22

Summary of activity for options

​

​	​	​	​	​	​	​	​	​	​	​
​	​	Options Outstanding
​	​	​	​	​	​	​	​	​	​	Weighted
​	​	​	​	Weighted-		​	Aggregate		​	Average
​	​	​	​	Average		​	Intrinsic		​	Remaining
​	​	Number of	​	Exercise		​	Value		​	Contractual Life
​		Options		Price			(in 000’s)			(In Years)
Balance, December 31, 2021		5,640,438	​	$	4.19		$	12,002		8.0
Options granted		426,575	​	$	2.52		​	​		​
Options exercised		(367,875)	​	$	0.89		​	​		​
Options forfeited		(422,870)	​	$	5.49		​	​		​
Options expired		(41,737)	​	$	0.87		​	​		​
Balance, June 30, 2022		5,234,531	​	$	4.26	​	$	3,720		7.1
Exercisable as of June 30, 2022		3,350,614	​	$	3.02	​	$	3,125	​	6.1
Vested and expected to vest as of June 30, 2022		5,234,531	​	$	4.26	​	$	3,720	​	7.1

Schedule of total equity-based compensation expense

​

​	​	​	​	​	​	​	​	​	​	​	​	​
​	​	Three Months Ended June 30,					​	Six Months Ended June 30,
​		2022			2021			2022			2021
Research and development	​	$	82	​	$	13	​	$	316	​	$	34
General and administrative	​		810	​		81	​		1,577	​		158
Total equity-based compensation	​	$	892	​	$	94	​	$	1,893	​	$	192

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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