Share-based Compensation (Tables)

12 Months Ended

Dec. 28, 2025

Share-Based Payment Arrangement [Abstract]

Schedule of Nonvested Restricted Stock Units Activity

RSU and PSU activity under the various plans during the fiscal years presented is as follows:


(in thousands, except per share amounts)	Non-vested shares outstanding at December 31, 2023		Granted	Vested	Forfeited	Non-vested shares outstanding at December 29, 2024		Granted	Vested	Forfeited	Non-vested shares outstanding at December 28, 2025
KKI
RSUs and PSUs	6,785		1,934	1,893	842	5,984		8,777	1,805	2,287	10,669
Weighted Average Grant Date Fair Value	$	14.54	14.19	14.80	14.94	$	14.54	3.80	14.92	12.33	$	5.97
KK U.K.
RSUs	7		—	—	—	7		—	5	2	—
Weighted Average Grant Date Fair Value	$	29.80	—	—	—	$	29.80	—	29.80	29.80	$	—
KK Australia
RSUs	185		—	42	6	137		—	116	—	21
Weighted Average Grant Date Fair Value	$	1.57	—	2.13	1.91	$	1.57	—	1.57	—	$	1.72
KK Mexico
RSUs	20		—	2	—	18		—	17	—	1
Weighted Average Grant Date Fair Value	$	30.18	—	29.21	—	$	30.18	—	29.21	—	$	40.14

Share-based Payment Arrangement, Nonvested Award, Cost

The unrecognized compensation cost related to the unvested RSUs and PSUs and the weighted-average period over which such cost is expected to be recognized are as follows:


	As of December 28, 2025
	Unrecognized Compensation Cost		Recognized Over a Weighted- Average Period of
KKI	$	38,257	2.4 years

KK Australia	6		0.7 years
KK Mexico	10		0.7 years

The unrecognized compensation cost related to the unvested stock options and the weighted-average period over which such cost is expected to be recognized are as follows:


	As of December 28, 2025
	Unrecognized Compensation Cost		Recognized Over a Weighted- Average Period of
KKI	$	2,952	2.2 years

Schedule of Weighted-Average Assumptions, Stock Options

The following weighted-average assumptions were utilized in determining the fair value of the time-vested stock options granted during the fiscal years presented:


	Fiscal Years Ended
	December 28, 2025		December 29, 2024
KKI
Risk-free interest rate	3.9	%	3.7	%
Expected volatility	55.2	%	35.1	%
Dividend yield	—	%	1.0	%
Expected term (years)	6.0 years		6.5 years

Summary of Stock Option Activity

A summary of the status of the time-vested stock options as of December 28, 2025 and changes during fiscal years presented is as follows:


	Share options outstanding at					Share options outstanding at					Share options outstanding at
(in thousands, except per share amounts)	December 31, 2023		Granted	Exercised	Forfeited or expired	December 29, 2024		Granted	Exercised	Forfeited or expired	December 28, 2025
KKI
Options	2,993		—	—	331	2,662		2,060	—	2,164	2,558
Weighted Average Grant Date Fair Value	$	5.90	—	—	6.10	$	5.88	1.58	—	5.83	$	2.46
Weighted Average Exercise Price	$	14.30	—	—	14.61	$	14.27	3.22	—	14.19	$	5.43
Weighted Average Remaining Contractual Term (years)	7.5 years					7.1 years					5.5 years
Aggregate Intrinsic Value (in thousands)	$	2,352				$	—				$	2,187