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v3.24.1

Share-Based Payments (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payments |
Schedule of valuation assumptions for applying the Black-Scholes methodology to the options granted under share-based payments |
Risk free interest rate, average | 3.91%
Expected option life, average | 5 years
Expected price volatility, average | 91.47%
Expected dividend yield | 0%
Schedule of stock option activity |
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
As of December 31, 2021 |  |  | 831,071 |  |  | $ | 6.47 |  |  |  | 4.10 |  |  | $ | — |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Expired and canceled |  |  | (274,379 | ) |  |  | 7.44 |  |  |  |  |  |  |  |  |
Forfeited prior to vesting |  |  | (68,215 | ) |  |  | 2.50 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
As of December 31, 2022 |  |  | 488,477 |  |  | $ | 6.48 |  |  |  | 3.42 |  |  | $ | — |
Granted |  |  | 160,000 |  |  |  | 1.01 |  |  |  |  |  |  |  |  |
Expired and canceled |  |  | (35,457 | ) |  |  | 7.29 |  |  |  |  |  |  |  |  |
Forfeited prior to vesting |  |  | (5,210 | ) |  |  | 2.50 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
As of December 31, 2023 |  |  | 607,810 |  |  | $ | 5.03 |  |  |  | 3.32 |  |  | $ | — |
Vested and Expected to Vest at December 31, 2022 |  |  | 488,477 |  |  | $ | 6.48 |  |  |  | 3.42 |  |  | $ | — |
Vested at December 31, 2022 |  |  | 373,612 |  |  | $ | 7.72 |  |  |  | 3.22 |  |  | $ | — |
Vested and Expected to Vest at December 31, 2023 |  |  | 607,810 |  |  | $ | 5.03 |  |  |  | 3.32 |  |  | $ | — |
Vested at December 31, 2023 |  |  | 403,365 |  |  | $ | 6.90 |  |  |  | 2.51 |  |  | $ | — |
Schedule of shares purchased and compensation expense associated with Employee Stock Purchase Plans |
|  | 2023 |  |  | 2022 |
Shares purchased under ESPP plan |  |  | 13,381 |  |  |  | 7,180 |
Plan compensation expense |  | $ | 3 |  |  | $ | 1 |

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