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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2025
Stock-Based Compensation |
Schedule of Stock option plans | ​
​ | ​
​ | 2023
​ | Plan
Outstanding or Exercised as of December 31, 2023 | 8,791,833
Available for future issuance under plan | 3,849,804
Total authorized by plan | 12,641,637
​ | ​
Outstanding or Exercised as of December 31, 2024 | 11,609,900
Available for future issuance under plan | 1,031,737
Totals authorized by plan | 12,641,637
​ | ​
Outstanding or Exercised as of December 31, 2025 | 9,846,529
Available for future issuance under plan | 2,795,108
Totals authorized by plan | 12,641,637
Schedule of summary of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average
​ | ​ | Number of | ​ | Average | ​ | Remaining Life
​ | ​ ​ ​ | Options | ​ ​ ​ | Exercise Price | ​ ​ ​ | (years)
Outstanding at December 31, 2022 |  | 2,805,673 | ​ | $ | 7.80 |  | 7.28
Granted |  | 180,000 | ​ |  | 4.43 |  | ​
Exercised |  | (28,240) | ​ |  | 1.33 |  | ​
Expired or Forfeited |  | (46,125) | ​ |  | 11.33 |  | ​
Outstanding at December 31, 2023 |  | 2,911,308 | ​ | $ | 7.60 |  | 6.30
Granted |  | 2,804,739 | ​ |  | 1.33 |  | ​
Exercised |  | (152,273) | ​ |  | 1.43 |  | ​
Expired or Forfeited |  | (954,587) | ​ |  | 6.40 |  | ​
Outstanding at December 31, 2024 |  | 4,609,187 | ​ | $ | 4.25 |  | 7.84
Granted |  | 204,941 | ​ |  | 3.16 |  | ​
Exercised |  | (129,583) | ​ |  | 1.33 |  | ​
Expired or Forfeited |  | (695,687) | ​ |  | 6.73 |  | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at December 31, 2025 |  | 3,988,858 | ​ | $ | 3.86 |  | 7.04
Summary of assumptions used to compute the fair value of stock options granted | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​ ​ ​ | 2023 |
Assumptions for Black-Scholes: |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​
Expected term in years |  | ​ | 5.8 |  | ​ | 5.3 to 5.8 |  | ​ | 6.0 to 6.1 | ​
Volatility |  | ​ | 90.47% | % | ​ | 90.47% to 92.90 | % | ​ | 86.97% to 88.42 | %
Risk-free interest rate |  | ​ | 3.68% to 4.13 | % | ​ | 4.01% to 4.64 | % | ​ | 3.58% to 4.43 | %
Expected annual dividends |  | ​ | None |  | ​ | None |  | ​ | None | ​
Value of options granted: |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​
Number of options granted |  | ​ | 204,941 |  | ​ | 2,804,739 |  | ​ | 180,000 | ​
Weighted average fair value per share |  | $ | 1.96 |  | $ | 1.00 |  | $ | 3.34 | ​
Fair value of options granted |  | $ | 401,348 |  | $ | 2,790,737 |  | $ | 600,345 | ​
Schedule of summary of stock awards and restricted stock units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted Average
Stock Awards and Restricted Stock Units | ​ | Number of | ​ | Grant Date
​ | ​ ​ ​ | Shares/Units | ​ ​ ​ | Fair Value Per Share/Unit
Unvested at December 31, 2022 |  | 288,650 | ​ | $ | 5.64
Granted |  | 96,525 | ​ |  | 5.18
Vested |  | (138,650) | ​ |  | 5.64
Forfeited |  | — | ​ |  | —
Unvested at December 31, 2023 |  | 246,525 | ​ | $ | 5.46
Granted |  | 232,766 | ​ |  | 1.41
Vested |  | (146,525) | ​ |  | 5.34
Forfeited |  | — | ​ |  | —
Unvested at December 31, 2024 |  | 332,766 | ​ | $ | 2.68
Granted |  | 1,144,305 | ​ |  | 2.54
Vested |  | (704,633) | ​ |  | 2.54
Forfeited |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​
Unvested at December 31, 2025 |  | 772,438 | ​ | $ | 2.61
Schedule of summary of performance stock units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted Average
Performance Stock Units | ​ | Number of | ​ | Grant Date
​ | ​ ​ ​ | Units | ​ ​ ​ | Fair Value Per Unit
Unvested at December 31, 2024 |  | — | ​ | $ | —
Granted |  | 1,504,431 | ​ |  | 2.37
Vested |  | — | ​ |  | —
Forfeited |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​
Unvested at December 31, 2025 |  | 1,504,431 | ​ | $ | 2.37

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