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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 27, 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 nine months ended September 27, 2025 and September 28, 2024 (in thousands):

		Three Months Ended								Nine Months Ended
		September 27, 2025				September 28, 2024				September 27, 2025				September 28, 2024
Cost of revenues		$	7			$	68			$	46			$	201
Research and development			(31	)			25				32				129
Sales and marketing			5				(43	)			148				178
General and administrative			111				64				336				419
Total stock-based compensation expense		$	92			$	114			$	562			$	927

Summary of Stock Options

The following table summarizes stock options information during the nine months ended September 27, 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			753,705			$	0.96
Canceled or forfeited			(263,992	)		$	3.90
Outstanding as of September 27, 2025			2,182,420			$	2.10			$	149

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								Nine Months Ended
		September 27, 2025				September 28, 2024				September 27, 2025				September 28, 2024
Average risk free interest rate			3.63	%			4.35	%			3.82	%			4.35	%
Expected life (in years)			4.50				4.40				3.52				4.40
Dividend yield		—				—				—				—
Average volatility			69	%			77	%			76	%			77	%

Summary of Stock Options Outstanding, Vested, Expected to Vest and Exercisable

Information regarding stock options outstanding, vested, expected to vest, and exercisable as of September 27, 2025 is summarized below:

		Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Life (Years)				Aggregate Intrinsic Value (thousands)
Options outstanding			2,182,420			$	2.10				3.77			$	149
Options vested and expected to vest			2,068,330			$	2.15				3.66			$	130
Options exercisable			1,221,342			$	2.79				2.81			$	1

Restricted Stock Units

Information regarding RSUs activity for the nine months ended September 27, 2025 is summarized below:

		Number of Shares
Outstanding as of December 28, 2024			615,707
Restricted stock units granted			176,258
Restricted stock units released			(169,220	)
Restricted stock units forfeited			(11,333	)
Outstanding as of September 27, 2025			611,412

Additionally, at the Company’s Annual Meeting held on June 11, 2025, the Company’s stockholders approved an amendment and restatement of the Company’s Restated Charter, among other matters, to increase the number of authorized shares of the Company’s common stock from 30,000,000 to 63,500,000 shares.

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