Net Income per Share (Tables)

6 Months Ended

Sep. 23, 2022

Earnings Per Share [Abstract]

Schedule of Computation of Net (Loss) Income per Share and Unaudited Pro Forma Net Income per Share

	Three-Month Period Ended				Six-Month Period Ended
	September 23, 2022		September 24, 2021		September 23, 2022		September 24, 2021
Net income attributable to Allegro MicroSystems, Inc.	$	50,614	$	33,186	$	60,861	$	60,855
Net income attributable to common stockholders	50,648		33,223		60,931		60,930
Basic weighted average shares of common stock	191,284,631		189,673,788		190,959,616		189,629,535
Dilutive effect of common stock equivalents	1,354,945		2,002,634		1,694,481		1,786,715
Diluted weighted average shares of common stock	192,639,576		191,676,422		192,654,097		191,416,250
Basic net income attributable to Allegro MicroSystems, Inc. per share	$	0.26	$	0.17	$	0.32	$	0.32
Basic net income attributable to common stockholders per share	$	0.26	$	0.18	$	0.32	$	0.32
Diluted net income attributable to Allegro MicroSystems, Inc. per share	$	0.26	$	0.17	$	0.32	$	0.32
Diluted net income attributable to common stockholders per share	$	0.26	$	0.17	$	0.32	$	0.32

Schedule Of Anti Dilutive Securities Excluded

The following table represents the securities excluded as conversion of such securities would have an antidilutive effect on income per share:

	Three-Month Period Ended		Six-Month Period Ended
	September 23, 2022	September 24, 2021	September 23, 2022	September 24, 2021
Restricted stock units	77,043	—	48,725	—
Performance stock units	169,939	—	107,390	—
Employee stock purchase plan	—	1,567	—	6,012
Total	246,982	1,567	156,115	6,012

Schedule of Issuable Weighted Average Share Information

	Three-Month Period Ended		Six-Month Period Ended
	September 23, 2022	September 24, 2021	September 23, 2022	September 24, 2021
Restricted stock units	541,201	1,026,069	624,738	922,968
Performance stock units	810,426	976,565	1,066,425	863,747
Employee stock purchase plan	3,318	—	3,318	—
Total	1,354,945	2,002,634	1,694,481	1,786,715