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PREFERRED STOCK AND WARRANTS (Tables) | 3 Months Ended
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Mar. 31, 2026
PREFERRED STOCK AND WARRANTS |
Schedule of key assumptions used to determine the fair value of warrants | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | ​ | ​ | December 31, | ​
​ | 2026 | ​ | 2025
Stock price | $ | 2.12 | ​ | ​ | $ | 2.88 | ​
Strike price | $ | 3.77 | ​ | ​ | $ | 3.77 | ​
Risk-free rate |  | 3.68 | % | ​ |  | 3.48 | %
Volatility |  | 57.5 | % | ​ |  | 50.7 | %
Dividend yield |  | 0.0 | % | ​ |  | 0.0 | %
Time to expiration (years) |  | 1.0 | ​ | ​ |  | 1.2 | ​
Fair value of warrant per share | $ | 0.15 | ​ | ​ | $ | 0.41 | ​
Schedule of fair value of preferred stock and warrants | The changes in the Company’s warrant liabilities for the three months ended March 31, 2026 and 2025 were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​
​ | Three months ended March 31,
​ | 2026 | ​ | 2025
Balance at beginning of year | $ | 1,919 | ​ | $ | 8,064
Exercise of warrants | ​ | — | ​ | ​ | (150)
Fair value change |  | (1,237) | ​ |  | (1,735)
Balance at end of period | $ | 682 | ​ | $ | 6,179

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