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Net Income per Share (Tables)

6 Months Ended

Sep. 24, 2021

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 24, 2021						September 25, 2020						September 24, 2021						September 25, 2020
Net income attributable to Allegro MicroSystems, Inc.			$	33,186					$	9,584					$	60,855					$	14,404
Net income attributable to common stockholders			33,223						9,618						60,930						14,472
Basic weighted average shares of common stock			189,673,788						10,000,000						189,629,535						10,000,000
Dilutive effect of common stock equivalents			2,002,634						—						1,786,715						—
Diluted weighted average shares of common stock			191,676,422						10,000,000						191,416,250						10,000,000
Basic net income attributable to Allegro MicroSystems, Inc. per share			$	0.17					$	0.96					$	0.32					$	1.44
Basic net income attributable to common stockholders per share			$	0.18					$	0.96					$	0.32					$	1.45
Diluted net income attributable to Allegro MicroSystems, Inc. per share			$	0.17					$	0.96					$	0.32					$	1.44
Diluted net income attributable to common stockholders per share			$	0.17					$	0.96					$	0.32					$	1.45

Schedule of Issuable Weighted Average Share Information

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

			Three-Month Period Ended												Six-Month Period Ended
			September 24, 2021						September 25, 2020						September 24, 2021						September 25, 2020
Restricted stock units			1,026,069						—						922,968						—
Performance stock units			976,565						—						863,747						—
Total			2,002,634						—						1,786,715						—

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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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