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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 28, 2024
Equity [Abstract] |
Share Activity and Total Number of Share Available for Grant | The following table represents the shares activity and the total number of shares available for grant under the Incentive Plan:
|  | Shares Available for Grant |
Balances as of December 31, 2022 |  |  | 114,995 |
Shares added |  |  | 1,000,000 |
Options granted |  |  | (808,410 | )
Restricted stock granted |  |  | (294,503 | )
Options cancelled or forfeited |  |  | 245,617 |
Awards cancelled |  |  | 75,294 |
Balances as of December 30, 2023 |  |  | 332,993 |
Options granted |  |  | (40,900 | )
Restricted stock granted |  |  | (862,869 | )
Options cancelled or forfeited |  |  | 1,104,104 |
Awards cancelled |  |  | 46,109 |
Balances as of December 28, 2024 |  |  | 579,437 |
Stock-Based Compensation Expenses | The fo llowing table shows stock-based compensation expenses by functional area in the consolidated statements of operations for 2024 and 2023 (in thousands):
|  |  | Year Ended |
|  |  | December 28, 2024 |  |  | December 30, 2023 |
Cost of revenues |  |  | $ | 221 |  |  | $ | 213 |
Research and development |  |  |  | 165 |  |  |  | 217 |
Sales and marketing |  |  |  | 259 |  |  |  | 378 |
General and administrative |  |  |  | 598 |  |  |  | 842 |
Total stock-based compensation expense |  |  | $ | 1,243 |  |  | $ | 1,650 |
Summary of Activity in Stock Option Plan | The following table summarizes information regarding activity in our stock option plans during the fiscal years ended 2024 and 2023 (in thousands except share and per share data):
|  | Outstanding Options |
|  | Number of Shares |  |  | Weighted Average Exercise Price |
Balances as of December 31, 2022 |  |  | 2,232,967 |  |  |  | 4.27 |
Options granted |  |  | 808,410 |  |  |  | 2.13 |
Options exercised |  |  | (37,839 | ) |  |  | 2.18 |
Options cancelled or forfeited |  |  | (245,617 | ) |  |  | 5.04 |
Balances as of December 30, 2023 |  |  | 2,757,921 |  |  | $ | 3.60 |
Options granted |  |  | 40,900 |  |  |  | 2.37 |
Options exercised |  |  | (2,010 | ) |  |  | 1.85 |
Options cancelled or forfeited |  |  | (1,104,104 | ) |  |  | 4.66 |
Balances as of December 28, 2024 |  |  | 1,692,707 |  |  | $ | 2.89 |
Stock Options Outstanding and Exercisable | The following table summarizes information with respect to stock options outstanding and exercisable as of December 28, 2024:
|  | Options Outstanding |  |  | Options Vested and Exercisable |
Range of Exercise Prices |  | Number of Shares Outstanding |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Weighted Average Exercise Price |  |  | Number of Shares Exercisable |  |  | Weighted Average Exercise Price |
$1.62 - $2.12 |  |  | 63,208 |  |  |  | 5.46 |  |  | $ | 1.94 |  |  |  | 21,635 |  |  | $ | 2.01 |
$2.13 - $2.13 |  |  | 851,114 |  |  |  | 4.21 |  |  | $ | 2.13 |  |  |  | 488,167 |  |  | $ | 2.13 |
$2.17 - $2.27 |  |  | 68,563 |  |  |  | 3.06 |  |  | $ | 2.22 |  |  |  | 55,689 |  |  | $ | 2.23 |
$2.28 - $2.28 |  |  | 319,811 |  |  |  | 2.93 |  |  | $ | 2.28 |  |  |  | 261,811 |  |  | $ | 2.28 |
$2.30 - $5.04 |  |  | 182,271 |  |  |  | 2.13 |  |  | $ | 4.05 |  |  |  | 153,154 |  |  | $ | 4.19 |
$5.30 - $6.58 |  |  | 181,240 |  |  |  | 2.00 |  |  | $ | 6.31 |  |  |  | 179,594 |  |  | $ | 6.32 |
$6.76 - $7.38 |  |  | 22,700 |  |  |  | 3.24 |  |  | $ | 7.30 |  |  |  | 20,013 |  |  | $ | 7.30 |
$7.40 - $7.40 |  |  | 400 |  |  |  | 0.57 |  |  | $ | 7.40 |  |  |  | 400 |  |  | $ | 7.40 |
$7.58 - $7.58 |  |  | 3,000 |  |  |  | 3.82 |  |  | $ | 7.58 |  |  |  | 2,375 |  |  | $ | 7.58 |
$7.62 - $7.62 |  |  | 400 |  |  |  | 3.75 |  |  | $ | 7.62 |  |  |  | 325 |  |  | $ | 7.62 |
$1.62 - $7.62 |  |  | 1,692,707 |  |  |  | 3.49 |  |  | $ | 2.89 |  |  |  | 1,183,163 |  |  | $ | 3.17 |
Weighted Average Assumptions for Fair Value of Options Granted | T he determination of the fair value of options granted is computed using the Black-Scholes option pricing model with the following weighted average assumptions:
|  | Employee Stock Option Plan |
|  | December 28, 2024 |  |  | December 30, 2023 |
Average risk-free interest rate |  |  | 4.33 | % |  |  | 4.57 | %
Expected life (in years) |  | 4.40 years |  |  | 4.40 years |
Dividend yield |  |  | — |  |  |  | — |
Average volatility |  |  | 77.0 | % |  |  | 77.0 | %
Stock Options Outstanding, Exercisable and Expected to Vest | Information regarding stock options outstanding, exercisable and expected to vest as of December 28, 2024 is summarized below:
|  | Number of |  |  | Weighted Average |  |  | Weighted Average Remaining Contractual |  |  | Aggregate Intrinsic Value |
|  | Shares |  |  | Exercise Price |  |  | Life (years) |  |  | (thousands) |
Options outstanding |  |  | 1,692,707 |  |  | $ | 2.89 |  |  |  | 3.49 |  |  |  | — |
Options vested and expected to vest |  |  | 1,659,658 |  |  | $ | 2.90 |  |  |  | 3.45 |  |  |  | — |
Options exercisable |  |  | 1,183,163 |  |  | $ | 3.17 |  |  |  | 2.59 |  |  |  | — |
Restricted Stock Units Outstanding, Vested and Expected to Vest | Information regarding the restricted stock units outstanding, vested and expected to vest as of December 28, 2024 is summarized below:
|  | Number of Shares |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Aggregate Intrinsic Value (thousands) |
Restricted stock units outstanding |  |  | 615,707 |  |  |  | 1.57 |  |  | $ | 1,028 |
Restricted stock units vested and expected to vest |  |  | 558,624 |  |  |  | 1.53 |  |  | $ | 933 |
Options exercisable |  |  | 19,913 |  |  |  | — |  |  | $ | 33 |
Restricted Stock Units and Awards | Information regarding the restricted stock unit activity during the years ended December 28, 2024 and December 30, 2023 is summarized below:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding as of December 31, 2022 |  |  | 473,029 |  |  | $ | 3.13 |
Restricted stock units granted |  |  | 196,335 |  |  | $ | 1.91 |
Restricted stock units released |  |  | (265,956 | ) |  | $ | 3.10 |
Restricted stock units forfeited |  |  | (50,196 | ) |  | $ | 3.22 |
Outstanding as of December 30, 2023 |  |  | 353,212 |  |  | $ | 2.46 |
Restricted stock units granted |  |  | 575,246 |  |  | $ | 1.85 |
Restricted stock units released |  |  | (282,012 | ) |  | $ | 2.50 |
Restricted stock units forfeited |  |  | (30,739 | ) |  | $ | 2.28 |
Outstanding as of December 28, 2024 |  |  | 615,707 |  |  | $ | 1.89 |

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