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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Stock Based Compensation [Abstract]

Schedule of Stock Based Compensation Expense

Stock based compensation has been reported within expense line items on the consolidated statement of operations for the three months ended March 31, 2023 and 2022 as shown in the following table (in $000s):

​

​	​	​	​	​	​	​	​
​		Three Months Ended
​		March 31,
​		2023			2022
General and administrative	​	$	279	​	$	252	​
Research and development	​	​	122	​	$	128	​
Stock-based compensation costs before income taxes	​	$	401	​	$	380	​

​

Schedule of Fair Value of the Stock Options Granted

​

​	​	​	​	​
​	​	​	​	​
​	​	Three months ended	​	Three months ended
​		March 31, 2023		March 31, 2022
Expected term (years)		5		5
Risk free interest rate		3.660% – 4.160%	​	1.370%  – 1.530%
Volatility		89% – 90%	​	93%
Expected dividend yield over expected term		0.00%	​	0.00%

​

Schedule of Share Option Activity

A summary of the share option activity and related information is as follows:

​	​	​	​	​	​	​	​	​	​	​
​		​		​	​		Weighted		​	​
​		​		Weighted			Average		​	​
​		Number of		Average			Remaining		Aggregate
​	​	Options		Exercise			Contractual	​	Intrinsic
​	​	Outstanding	​	Price Per Share			Term (Years)	​	Value ($000)
Options outstanding at December 31, 2022		1,610,590	​	$	5.85		8.34	​	$	—
Granted		11,000	​	$	0.79		—	​		—
Cancelled/forfeited		(17,762)	​	$	41.90		—	​		—
Options outstanding at March 31, 2023		1,603,828	​	$	5.41		8.20	​	$	—
Unvested at March 31, 2023		779,526	​	$	2.96		8.73	​	$	—
Vested and exercisable at March 31, 2023		824,302	​	$	7.73		7.70	​	$	—

​

Schedule of Restricted Stock Units Activity

​

​	​	​	​	​	​	​	​
​		​		Weighted		​	Weighted
​		​		Average		​	Average
​	​	Restricted		Grant Date		​	Remaining
​	​	Stock Units	​	Value Per Share		​	Term
Restricted Stock Units outstanding at March 31, 2023	​	394,657	​	$	—	​	9.54 years
Unvested at March 31, 2023		377,248	​	$	0.99	​	9.64 years
Vested and exercisable at March 31, 2023		17,409	​	$	6.69	​	7.26 years

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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 of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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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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