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Stock Option Plans (Tables) | 6 Months Ended
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Jun. 30, 2026
Stock Option Plans |
Schedule of stock option activity | Activity under the Company’s stock option plans is set forth below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Options Outstanding
​ | ​ ​ ​ | ​ | ​ ​ ​ | ​ | ​ ​ ​ | Weighted ‑
​ | ​ | Shares | ​ | ​ | ​ | Average
​ | ​ | Available | ​ | Number of | ​ | Exercise
​ | ​ ​ ​ | for Grant | ​ ​ ​ | Options | ​ ​ ​ | Price
Balance at December 31, 2025 |  | 3,007,335 |  | 14,028,177 | ​ | $ | 5.20
Additional shares authorized |  | 2,987,865 |  | — | ​ |  | —
Options granted |  | (240,500) |  | 240,500 | ​ |  | 12.73
Options exercised |  | — |  | (338,537) | ​ |  | 4.44
Options forfeited |  | 676,334 |  | (676,334) | ​ |  | 14.01
Balance at June 30, 2026 |  | 6,431,034 |  | 13,253,806 | ​ | $ | 4.90
​

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