Net (Loss) Income per Share (Tables)

12 Months Ended

Mar. 27, 2026

Earnings Per Share [Abstract]

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

The following table sets forth the basic and diluted net (loss) income attributable to Allegro MicroSystems, Inc. per share.


		Fiscal Year Ended
		March 27, 2026				March 28, 2025				March 29, 2024
Net (loss) income attributable to Allegro MicroSystems, Inc.		$	(14,897	)		$	(73,010	)		$	152,697

Basic weighted average common shares			185,035,670				187,707,391				192,573,169
Dilutive effect of common stock equivalents			—				—				2,101,183
Diluted weighted average common shares			185,035,670				187,707,391				194,674,352

Basic net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders		$	(0.08	)		$	(0.39	)		$	0.79

Diluted net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders		$	(0.08	)		$	(0.39	)		$	0.78

Schedule of Anti Dilutive Securities Excluded

The computed net (loss) income per share for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024 does not assume conversion of securities that would have an antidilutive effect on net (loss) income per share. The following represents contingently issuable shares under the restricted stock units (“RSUs”) and performance-based restricted stock units (“PSUs”) excluded from the computation of net (loss) income per share, as such securities would have an antidilutive effect on net (loss) income per share if the Company had reported net income for the respective periods:


		Fiscal Year Ended
		March 27, 2026				March 28, 2025				March 29, 2024
RSUs			11,940				451,087				40,257
PSUs			21,248				91,210				129,837

Schedule of Issuable Weighted Average Share Information

The following table represents issued and issuable weighted average share information underlying our outstanding RSUs, PSUs and participation in our employee stock purchase plan (“ESPP”) for the respective period:


		Fiscal Year Ended
		March 27, 2026				March 28, 2025				March 29, 2024
RSUs			—				—				888,811
PSUs			—				—				1,210,124
ESPP			—				—				2,248
Total			—				—				2,101,183