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STOCK BASED COMPENSATION, 2020 Stock plan (Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
STOCK BASED COMPENSATION |  |  |
Number of common stock reserved for issuance |  | 4,759,109 | 1,000,000
Number of additional shares authorized |  | 3,759,109 |
Options to purchase shares granted | 10,000 | 60,232 |
Common Stock remain available for issuance |  | 556,695 |
Restricted stock purchase agreements |  |  |
STOCK BASED COMPENSATION |  |  |
Shares issued pursuant to restricted stock purchase agreements |  | 25,375 | 41,000
Employees |  |  |
STOCK BASED COMPENSATION |  |  |
Options to purchase shares granted | 204,625 | 136,000 | 380,500
Employees | Stock options |  |  |
STOCK BASED COMPENSATION |  |  |
Options to purchase shares granted |  | 516,500 | 721,125
Third-party consultant | Stock options |  |  |
STOCK BASED COMPENSATION |  |  |
Options to purchase shares granted |  | 60,232 | 70,232
Third-party consultant | Restricted Stock Units |  |  |
STOCK BASED COMPENSATION |  |  |
Shares issued pursuant to restricted stock purchase agreements | 0 | 3,411,057 | 3,411,057

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