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SHARE-BASED COMPENSATION | 12 Months Ended
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Dec. 31, 2021
SHARE-BASED COMPENSATION |
SHARE-BASED COMPENSATION | NOTE 10 – SHARE-BASED COMPENSATION For share-based awards granted, we have recognized compensation expense based on the estimated grant date fair value method. For these awards we have recognized compensation expense using a straight-line amortization method and reduced for estimated forfeitures. The impact on our results of operations of recording share-based compensation for the year ended December 31, 2021 and 2020 was as follows:
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |
(in thousands) |  |  |  |  |  |
Cost of goods sold |  | $ | 57 |  |  | $ | 44 |
Research and development |  |  | 303 |  |  |  | 371 |
Selling, general and administrative |  |  | 878 |  |  |  | 1,052 |
Total share-based compensation |  | $ | 1,238 |  |  | $ | 1,467 |
An immaterial amount of share-based compensation was capitalized into inventory as overhead for the years ended December 31, 2021 and 2020, respectively. The following table summarizes stock option activity under our stock option plans for the twelve months ended December 31:
|  | 2021 |  |  | 2020 |
|  | Options |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Life in Years |  |  | Options |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Life in Years |
Outstanding at beginning of year |  |  | 25,000 |  |  | $ | 4.98 |  |  |  |  |  |  | 25,000 |  |  | $ | 4.98 |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  | - |  |  |  | - |  |  |  |
Exercised |  |  | (12,500 | ) |  |  | 4.98 |  |  |  |  |  |  | - |  |  |  | - |  |  |  |
Cancelled, Expired or |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeited |  |  | - |  |  |  | - |  |  |  |  |  |  | - |  |  |  | - |  |  |  |
Outstanding at end of year |  |  | 12,500 |  |  | $ | 4.98 |  |  |  | 3.33 |  |  |  | 25,000 |  |  | $ | 4.98 |  |  |  | 4.33 |
Vested or expected to vest at the end of the period |  |  | 12,166 |  |  | $ | 4.98 |  |  |  | 3.33 |  |  |  | 24,068 |  |  | $ | 4.98 |  |  |  | 4.33 |
Exercisable at end of year |  |  | 3,125 |  |  | $ | 4.98 |  |  |  | 3.33 |  |  |  | 9,375 |  |  | $ | 4.98 |  |  |  | 4.33 |
The aggregate intrinsic value of outstanding options is $0. There were no stock option awards exercised in 2020. Restricted stock award activity including performance-based stock award activity under our share-based compensation plan was as follows:
|  | 2021 |  |  | 2020 |
|  | Awards |  |  | Weighted - Average Grant Date Fair Value |  |  | Awards |  |  | Weighted - Average Grant Date Fair Value |
Outstanding at beginning of year |  |  | 643,228 |  |  | $ | 4.16 |  |  |  | 536,403 |  |  | $ | 5.44 |
Granted |  |  | 262,001 |  |  |  | 5.95 |  |  |  | 383,951 |  |  |  | 3.02 |
Vested |  |  | (272,952 | ) |  |  | 4.56 |  |  |  | (230,901 | ) |  |  | 5.16 |
Cancelled |  |  | (8,500 | ) |  |  | 4.15 |  |  |  | (46,225 | ) |  |  | 4.58 |
Outstanding at end of year |  |  | 623,777 |  |  | $ | 4.73 |  |  |  | 643,228 |  |  | $ | 4.16 |
During the years ended December 31, 2021 and 2020, 85,264 and 55,687 shares respectively were withheld from issuance related to restricted stock units vesting and stock option exercises to cover employee taxes and stock options exercise price. The remaining unamortized expected future compensation expense and remaining amortization period associated with unvested option grants and restricted stock awards are:
|  | December 31, 2021 |  |  | December 31, 2020 |
Unamortized future compensation expense |  | $ | 2,300,286 |  |  | $ | 2,017,501 |
Remaining weighted average amortization period in years |  |  | 2.57 |  |  |  | 2.35 |

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