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EMPLOYEE STOCK PLANS (Tables)

12 Months Ended

May 30, 2025

EMPLOYEE STOCK PLANS

Compensation costs related to the Company's stock-based compensation

		Year Ended
		May 30,				May 31,				May 31,
(In thousands, except per share data)		2025				2024				2023
Cost of sales		$	737			$	330			$	331
Research and development			1,476				639				706
Selling, general and administrative			2,949				1,549				1,711
Net effect on net income (loss)		$	5,162			$	2,518			$	2,748
Effect on net income (loss) per share:
Basic		$	0.17			$	0.09			$	0.10
Diluted		$	0.17			$	0.09			$	0.09

Stock option and RSU transactions

(in thousands)		Available Shares for Grant
Balance, May 31, 2022			735
Options granted			(110	)
RSUs granted			(674	)
RSUs cancelled			60
Options terminated			16
Balance, May 31, 2023			27
Shares issued under 2023 Equity Incentive Plan			1,500
Shares retired under 2016 Equity Incentive Plan			(95	)
Options granted			(4	)
RSUs granted			(221	)
RSUs cancelled			144
Options terminated			12
Balance, May 31, 2024			1,363
RSUs granted			(634	)
RSUs cancelled			70
Options terminated			2
Balance, May 30, 2025			801

Stock option transactions

		Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term				Aggregated Intrinsic Value
		(in thousands)				Per Share				(In Years)				(in thousands)
Balances, May 31, 2024			702			$	4.37				3.3			$	5,320
Options terminated			(2	)
Options exercised			(55	)
Balances, May 30, 2025			645			$	4.47				2.3			$	3,619
Options exercisable, May 30, 2025			585			$	3.85				2.1			$	3,531
Options exercisable and expected to vest			645			$	4.47				2.3			$	3,619

RSUs, PRSUs, restricted shares and performance restricted shares granted

		Number of Shares				Weighted Average Grant Date Fair Value				Weighted Average Remaining Contractual Term				Aggregate Intrinsic Value
		(in thousands)				Per Share				(In Years)				(in thousands)
Unvested, May 31, 2024			294			$	20.08				2.3			$	3,381
Granted (1)			634				14.74
Vested			(194	)			15.10
Forfeited (2)			(70	)			15.75
Unvested, May 30, 2025			664			$	16.89				2.1			$	6,330

Fair value assumptions for Option Valuation Model

		Year Ended
		May 31,				May 31,
		2024				2023
Expected term (in years)			5			5-6
Volatility			93	%			86	%
Risk-free interest rates			4.34	%			3.12	%
Weighted average grant date fair value		$	36.02			$	6.29

Fair value assumption of the ESPP Purchase Rights

		Year Ended
		May 30,				May 31,				May 31,
		2025				2024				2023
Expected term (in years)		0.5 - 2.0				0.5 - 2.0				0.5 - 2.0
Volatility		80% - 95%				70% - 94%				91% - 203%
Risk-free interest rates		3.61% - 4.36%				4.72% - 5.53%				3.97% - 4.94%
Weighted average grant date fair value		$	2.01			$	6.30			$	13.60

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