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STOCK BASED COMPENSATION EXPENSE (Tables)

3 Months Ended

Mar. 31, 2026

STOCK BASED COMPENSATION EXPENSE

Summary of RSUs subject to time-based vesting

The following table summarizes the activity related to RSUs subject to time-based vesting requirements for the three months ended March 31, 2026:

​	​	​	​	​	​
​	​	RSUs
​	​	Number of Shares	​	​	Weighted Average Grant Date Fair Value
Non-vested as of December 31, 2025	​	35,818	​	$	328.25
Vested	​	(5,725)	​	​	352.25
Forfeited	​	(2,708)	​	​	317.66
Non-vested as of March 31, 2026	​	27,385	​	$	324.25

​

Summary of the stock option plan and the changes during the period

A summary of the Company’s stock option plan and the changes during the period ended March 31, 2026 is presented below:

​

​	​	​	​	​	​	​	​	​	​	​	​
​	​ ​ ​	​	​ ​ ​	​	​	​ ​ ​	Weighted	​ ​ ​	​	​
​	​	​	​	Weighted		​	Average	​	​	​
​	​	Number of	​	Average		​	Remaining	​	Aggregate
​	​	Outstanding	​	Exercise		​	Contractual	​	Intrinsic
​	​	Options	​	Price		​	Years	​	Value
Balance, December 31, 2025		234,147	​	$	75.00		7.00		​	​	​
Expired		(5)	​	​	15,000.00		​		​	​	​
Forfeited	​	(20,252)	​	​	67.45	​	​	​	​	​	​
Balance, March 31, 2026		213,890	​	$	75.72		6.75	​	$	—	(1)
Vested and Exercisable, March 31, 2026		204,488	​	$	75.25		6.66	​	$	—	(1)
Vested and Expected to Vest, March 31, 2026		213,890	​	$	75.72		6.75	​	$	—	(1)

​

⁽¹⁾ The Company’s closing stock price as of March 31, 2026 is $2.85 per share. As all outstanding options have an exercise price greater than the closing price, there does not exist any intrinsic value as of March 31, 2026.

Summary of stock-based compensation expense

Stock-based compensation included in the condensed consolidated statements of operations was as follows:

​	​	​	​	​	​	​
​	​	Three Months Ended March 31,
​	​	2026		​ ​ ​	2025
Cost of goods sold	​	$	19	​	$	7
Research and development	​	​	81	​	​	55
Selling and marketing	​		383	​		305
General and administrative	​		1,068	​	​	606
Total stock-based compensation expense	​	$	1,551	​	$	973

​

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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 changes in outstanding nonvested restricted stock units.

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