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Net Income per Share (Tables)

12 Months Ended

Mar. 26, 2021

Earnings Per Share [Abstract]

Schedule of Computation of Net 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. The number of shares of common stock reflected in the calculation is the total shares of common stock (vested and unvested) held on the IPO date, after the Common Stock Conversion.

						Fiscal Year Ended
						March 26, 2021						March 27, 2020
Net income attributable to Allegro MicroSystems, Inc.						$	17,953					$	36,971
Net income attributable to common stockholders						18,101						37,105
Basic weighted average common shares						83,448,055						10,000,000
Dilutive effect of common stock equivalents						92,968,590						—
Diluted weighted average common shares						176,416,645						10,000,000
Basic net income attributable to Allegro MicroSystems, Inc. per share						$	0.22					$	3.70
Basic net income attributable to common stockholders per share						$	0.22					$	3.71
Diluted net income attributable to Allegro MicroSystems, Inc. per share						$	0.10					$	3.70
Diluted net income attributable to common stockholders per share						$	0.10					$	3.71

Schedule of Weighted Average Number of Shares

The following represents issued and issuable weighted average share information for the respective periods:

						Fiscal Year Ended
						March 26, 2021						March 27, 2020
Restricted stock units						308,811						—
Performance stock units						218,678						—
Employee stock purchase plan						2,914						—
Shares related to Common Stock Conversion						92,438,187						—
Total						92,968,590						—

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- References

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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