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Stock-based Compensation | 12 Months Ended
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Dec. 28, 2025
Share-Based Payment Arrangement [Abstract] |
Stock-based Compensation | Stock-based Compensation The Company maintains a stock-based compensation plan, which authorizes the granting of various equity-based incentives, including restricted stock units (“RSUs”) and performance stock units (“PSUs”). Stock compensation expense is amortized on a straight line basis over the service period, which is generally the vesting period. The fair value of the Company’s RSU and PSU awards is measured at the market price of the Company’s common stock on the grant date. PSUs are earned based on the achievement of certain performance metrics in relation to a set target, and stock compensation expense may fluctuate based on the forecasted achievement prior to vesting or actual achievement of these target metrics upon vesting. RSU grants to employees generally vest ratably on an annual basis over a three-year period following the grant date, although some awards may vest ratably on an annual basis over two years or cliff vest at the end of a shorter time period. RSU grants to non-employee directors typically vest at the end of a one-year period. PSU grants generally cliff vest at the end of a three-year period following the grant date. Forfeitures are recorded as they occur. Stock compensation expense totaled approximately $8.1 million, $2.2 million and $1.9 million for the fiscal years ended December 28, 2025, December 29, 2024 and December 31, 2023, respectively. The table below summarizes activity related to the Company’s stock-based compensation plans during the fiscal year of 2025. This table excludes RSUs and PSUs of Southwest Gas Holdings stock that were granted to certain employees of the Company prior to the Centuri IPO and fully vested during fiscal year 2025. The fair value of these outstanding Southwest Gas Holdings awards was not material as of December 29, 2024.
| RSUs |  | PSUs
| Shares |  |  |  | Weighted Average Grant Date Fair Value (Per Unit) |  | Shares |  |  |  | Weighted Average Grant Date Fair Value (Per Unit)
As of December 29, 2024 | 342,679 |  |  |  |  | $ | 20.40 |  |  | — |  |  |  |  | N/A
Granted | 736,975 |  |  |  |  | $ | 18.05 |  |  | 118,612 |  |  |  |  | $ | 17.73 |
Vested | (160,830) |  |  |  |  | $ | 24.33 |  |  | — |  |  |  |  | N/A
Forfeited | (54,437) |  |  |  |  | $ | 17.15 |  |  | (8,320) |  |  |  |  | $ | 18.10 |
As of December 28, 2025 | 864,387 |  |  |  |  | $ | 17.87 |  |  | 110,292 |  |  |  |  | $ | 17.71 |
As of December 28, 2025, total unearned compensation related to Centuri stock RSUs and PSUs was approximately $9.7 million and $1.4 million, respectively, and these amounts are expected to be recognized over a weighted average period of approximately 1.4 years and 2.2 years, respectively.

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