Stock-Based Compensation

12 Months Ended

Dec. 27, 2025

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation Expense

Certain information regarding our stock-based compensation was as follows (in thousands, except per share amounts):


	Fiscal Year Ended
	December 27, 2025		December 28, 2024		December 30, 2023

Weighted average grant date per share fair value of RSUs granted	$	30.35	$	44.13	$	33.85

Fair value of RSUs vested	34,362		53,990		32,820

Pre-tax stock-based compensation expense by financial statement line and related tax benefit in the Consolidated Statements of Income are as follows (in thousands):


	Fiscal Year Ended
	December 27, 2025		December 28, 2024		December 30, 2023
Stock-based compensation expense included in:
Cost of revenues	$	7,391	$	7,738	$	6,854
Research and development	10,293		10,721		10,652
Selling, general and administrative	20,892		21,304		21,110

Total stock-based compensation	$	38,576	$	39,763	$	38,616
Stock-based compensation tax benefit (expense)	$	(850)	$	2,833	$	(1,424)

Unrecognized Stock-Based Compensation Expense

Unrecognized stock-based compensation expense at December 27, 2025 consisted of the following (in thousands):


	Unrecognized Expense		Weighted Average Recognition Period (Years)

Restricted stock units	$	41,880	2.1
Performance restricted stock units	9,935		2.0
Employee stock purchase plan	463		0.1
Total unrecognized stock-based compensation expense	$	52,278	2.0

Valuation Assumptions

The following assumptions were used in estimating the fair value of PRSUs:


	Fiscal Year Ended
	December 27, 2025		December 28, 2024		December 30, 2023
PRSUs:
Dividend yield	—	%	—	%	—	%
Expected volatility	54.0% - 55.2%		50.8	%	50.7	%
Risk-free interest rate	3.5% - 3.6%		3.7	%	4.4	%
Expected life (in years)	2.7 - 2.9		2.9		2.9

The following assumptions were used in estimating the fair value of shares under the Employee Stock Purchase Plan:


	Fiscal Year Ended
	December 27, 2025		December 28, 2024		December 30, 2023
Employee Stock Purchase Plan:
Dividend yield	—	%	—	%	—	%
Expected volatility	40.5% - 67.7%		40.4% - 58.7%		40.6% - 60.2%
Risk-free interest rate	4.2% - 5.1%		4.7% - 5.5%		0.8% - 5.5%
Expected life (in years)	0.5 - 1.0		0.5 - 1.0		0.5 - 1.0