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 |
|---|---|---|---|
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 22, 2025 | — |
| 425 | Filing | Mar 6, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 13, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2023 | — |
| EFFECT | Filing | Feb 4, 2021 | — |
| CORRESP | Letter to the SEC | Feb 2, 2021 | — |
| CORRESP | Letter to the SEC | Feb 2, 2021 | — |
| UPLOAD | Letter from the SEC | Jan 28, 2021 | — |
| DRS | Filing | Jan 25, 2021 | — |
| CERT | Filing | Oct 29, 2020 | — |
| 8-A12B | Filing | Oct 29, 2020 | — |
| EFFECT | Filing | Oct 28, 2020 | — |
| CORRESP | Letter to the SEC | Oct 26, 2020 | — |
| CORRESP | Letter to the SEC | Oct 26, 2020 | — |
| SEC STAFF LETTER | Filing | Oct 21, 2020 | — |
| SEC STAFF LETTER | Filing | Oct 14, 2020 | — |
| CORRESP | Letter to the SEC | Oct 6, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 25, 2020 | — |
| DRS/A | Filing | Sep 11, 2020 | — |
| DRSLTR | Filing | Sep 11, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 27, 2020 | — |
| DRS | Filing | Aug 3, 2020 | — |
| RW | Allegro microsystems | Aug 11, 2008 | — |
Showing 24 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.