Allegro Microsystems, Inc. SEC filings ALGM

Allegro Microsystems, Inc. has 529 filings in SEC EDGAR's recent list, going back to Aug 8, 2007. Its latest annual report, Form ARS, was filed on Jun 24, 2026 for the period ended Mar 27, 2026. The latest quarterly report (Form 10-Q) was filed on Oct 30, 2026, covering the quarter ended Sep 25, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on March 31.

Form Description Filed Period
DEFA14A Additional proxy material Jun 24, 2026 —
DEF 14A Proxy statement Jun 24, 2026 Aug 5, 2026
DEFA14A Additional proxy material Jun 25, 2025 —
DEF 14A Proxy statement Jun 25, 2025 Aug 7, 2025
DEFA14A Additional proxy material Jun 26, 2024 —
DEF 14A Proxy statement Jun 26, 2024 Aug 8, 2024
DEFA14A Additional proxy material Jun 21, 2023 —
DEF 14A Proxy statement Jun 21, 2023 Jun 20, 2023
DEFA14A Additional proxy material Jun 22, 2022 —
DEF 14A Proxy statement Jun 22, 2022 Jun 22, 2022
DEF 14A Proxy statement Jul 2, 2021 Jul 1, 2021
DEFA14A Additional proxy material Jul 1, 2021 —

Showing 12 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Semiconductors & Related Devices (SIC 3674)
Listed as
ALGM (Nasdaq)
Fiscal year ends
March 31
Headquarters
Manchester, NH
SEC filer status
Large accelerated filer
SEC CIK
866291
Former names
ALLEGRO MICROSYSTEMS, INC. (until Oct 30, 2026); ALLEGRO MICROSYSTEMS INC (until Oct 21, 2020)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.