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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 28, 2025
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation Expenses | The following table shows stock-based compensation expense included in the condensed consolidated statements of operations for the three and six months ended June 28, 2025 and June 29, 2024 (in thousands):
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 28, 2025 |  |  | June 29, 2024 |  |  | June 28, 2025 |  |  | June 29, 2024 |
Cost of revenues |  | $ | 21 |  |  | $ | 73 |  |  | $ | 39 |  |  | $ | 133 |
Research and development |  |  | 34 |  |  |  | 52 |  |  |  | 63 |  |  |  | 104 |
Sales and marketing |  |  | 77 |  |  |  | 110 |  |  |  | 143 |  |  |  | 221 |
General and administrative |  |  | 125 |  |  |  | 184 |  |  |  | 225 |  |  |  | 355 |
Total stock-based compensation expense |  | $ | 257 |  |  | $ | 419 |  |  | $ | 470 |  |  | $ | 813 |
Summary of Stock Options | The following table summarizes sto ck options information during the six months ended June 28, 2025:
|  | Number of Shares |  |  | Weighted Average Exercise Price Per Share |  |  | Aggregate Intrinsic Value (thousands) |
Outstanding as of December 28, 2024 |  |  | 1,692,707 |  |  | $ | 2.89 |  |  |  |
Granted |  |  | 710,805 |  |  | $ | 0.94 |  |  |  |
Canceled or forfeited |  |  | (181,758 | ) |  | $ | 3.53 |  |  |  |
Outstanding as of June 28, 2025 |  |  | 2,221,754 |  |  | $ | 2.21 |  |  | $ | - |
Weighted Average Assumptions for Fair Value Estimate of Stock-Based Awards (Options) | The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock-based awards (options) with the following weighted-average assumptions:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 28, 2025 |  |  | June 29, 2024 |  |  | June 28, 2025 |  |  | June 29, 2024 |
Average risk free interest rate |  |  | 3.81 | % |  |  | 4.35 | % |  |  | 3.83 | % |  |  | 4.35 | %
Expected life (in years) |  |  | 3.35 |  |  |  | 4.40 |  |  |  | 3.46 |  |  |  | 4.40 |
Dividend yield |  | — |  |  | — |  |  | — |  |  | — |
Average volatility |  |  | 74 | % |  |  | 77 | % |  |  | 77 | % |  |  | 77 | %
Summary of Stock Options Outstanding, Vested, Expected to Vest and Exercisable | In formation regarding stock options outstanding, vested, expected to vest, and exercisable as of June 28, 2025 is summarized below:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Aggregate Intrinsic Value (thousands) |
Options outstanding |  |  | 2,221,754 |  |  | $ | 2.21 |  |  |  | 3.85 |  |  | $ | - |
Options vested and expected to vest |  |  | 2,092,168 |  |  | $ | 2.28 |  |  |  | 3.74 |  |  | $ | - |
Options exercisable |  |  | 1,048,911 |  |  | $ | 3.09 |  |  |  | 2.45 |  |  | $ | - |
Restricted Stock Units | Information regarding RSUs activity for the six months ended June 28, 2025 is summarized below:
|  | Number of Shares |
Outstanding as of December 28, 2024 |  |  | 615,707 |
Restricted stock units granted |  |  | 173,490 |
Restricted stock units released |  |  | (39,996 | )
Restricted stock units forfeited |  |  | (5,000 | )
Outstanding as of June 28, 2025 |  |  | 744,201 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for exercisable or convertible options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (e)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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