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SHARE-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2023

SHARE-BASED COMPENSATION

Schedule of Black Scholes option-pricing model with assumptions used

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​	​	​	For Year Ended
​			December 31, 2022
Expected term (years)	​	​	6 years – 6.3 years
Risk-free interest rate	​	​	3.1% – 3.6%
Expected volatility	​	​	64%
Expected dividend yield	​	​	0%

Summary of non-vested share option activity under the share option plans

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Weighted-

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Average

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Weighted-

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Remaining

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Weighted-

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Aggregate

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Average

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Contractual

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Average

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Intrinsic

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Number of

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Exercise

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Term

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Fair Value at

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Value

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Shares

Price

(Years)

Grant Date

(in thousands)

Options outstanding at January 1, 2023

80,887

$

63.31

8.77

$

34.37

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Exercised

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—

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—

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Cancelled/Forfeited

—

—

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Expired

(10,476)

64.96

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Granted

—

—

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Options outstanding at December 31, 2023

70,411

$

63.07

7.28

$

33.98

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Options exercisable at December 31, 2023

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42,713

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$

58.57

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6.76

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$

39.52

Schedule of stock-based compensation

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​	​	​	​	​	​	​
​	​	Year Ended December 31,
(in thousands)		2023			2022
Research and development	​	$	254	​	$	216
Selling, general and administration	​		463	​		272
Total	​	$	717	​	$	488

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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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-Topic 718
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-Section 50
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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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