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 |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 30, 2026 | Sep 25, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Aug 7, 2026 | Aug 5, 2026 |
| 10-Q | Quarterly report | Jul 31, 2026 | Jun 26, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2026 | Jul 30, 2026 |
| ARS | Annual report to shareholders | Jun 24, 2026 | Mar 27, 2026 |
| DEFA14A | Additional proxy material | Jun 24, 2026 | — |
| DEF 14A | Proxy statement | Jun 24, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 18, 2026 | Jun 17, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 10-K | Annual report | May 21, 2026 | Mar 27, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 13, 2026 | May 11, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| 10-Q | Quarterly report | Jan 30, 2026 | Dec 26, 2025 |
| 8-K |
Current report
Results of operations
|
Jan 29, 2026 | Jan 29, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 21, 2026 | Jan 21, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 16, 2026 | Jan 15, 2026 |
| 10-Q | Quarterly report | Oct 31, 2025 | Sep 26, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2025 | Oct 30, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Aug 8, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Aug 1, 2025 | Jun 27, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 2025 |
| ARS | Annual report to shareholders | Jun 25, 2025 | Mar 28, 2025 |
| DEFA14A | Additional proxy material | Jun 25, 2025 | — |
| DEF 14A | Proxy statement | Jun 25, 2025 | Aug 7, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 22, 2025 | — |
| 10-K | Annual report | May 22, 2025 | Mar 28, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 12, 2025 | Mar 12, 2025 |
| 425 | Filing | Mar 6, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Feb 24, 2025 | Feb 24, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Feb 6, 2025 | Feb 6, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 3, 2025 | Jan 31, 2025 |
| 10-Q | Quarterly report | Jan 31, 2025 | Dec 27, 2024 |
| 8-K |
Current report
Results of operations
|
Jan 30, 2025 | Jan 30, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 10, 2025 | Jan 9, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 6, 2025 | Jan 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2024 | Dec 23, 2024 |
| 10-Q | Quarterly report | Nov 1, 2024 | Sep 27, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2024 | Oct 31, 2024 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Sep 24, 2024 | Sep 20, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Aug 12, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Aug 7, 2024 | Aug 6, 2024 |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 28, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Other events
|
Jul 26, 2024 | Jul 24, 2024 |
| 424B5 | Prospectus supplement | Jul 25, 2024 | — |
| 424B5 | Prospectus supplement | Jul 23, 2024 | — |
| 8-K |
Current report
Material agreement, Results of operations, Officer or director change, Regulation FD disclosure
|
Jul 23, 2024 | Jul 23, 2024 |
| S-3ASR | Automatic shelf registration | Jul 23, 2024 | — |
| ARS | Annual report to shareholders | Jun 26, 2024 | Mar 29, 2024 |
| DEFA14A | Additional proxy material | Jun 26, 2024 | — |
| DEF 14A | Proxy statement | Jun 26, 2024 | Aug 8, 2024 |
| 10-K | Annual report | May 23, 2024 | Mar 29, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 13, 2024 | — |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| 8-K |
Current report
Material agreement
|
Apr 25, 2024 | Apr 25, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 3, 2024 | Apr 1, 2024 |
| 8-K |
Current report
Officer or director change
|
Mar 4, 2024 | Feb 29, 2024 |
| 10-Q | Quarterly report | Feb 6, 2024 | Dec 29, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 1, 2024 | Feb 1, 2024 |
| 10-Q | Quarterly report | Nov 6, 2023 | Sep 29, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Nov 1, 2023 | Oct 31, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 19, 2023 | Oct 15, 2023 |
| 8-K |
Current report
Other events
|
Sep 21, 2023 | Sep 21, 2023 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 8, 2023 | Aug 7, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Aug 4, 2023 | Aug 3, 2023 |
| 10-Q | Quarterly report | Aug 4, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2023 | Aug 1, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jun 23, 2023 | Jun 21, 2023 |
| ARS | Annual report to shareholders | Jun 21, 2023 | Mar 31, 2023 |
| DEFA14A | Additional proxy material | Jun 21, 2023 | — |
| DEF 14A | Proxy statement | Jun 21, 2023 | Jun 20, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2023 | — |
| 10-K | Annual report | May 25, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 10, 2023 | May 10, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Apr 5, 2023 | Mar 30, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 22, 2023 | Feb 16, 2023 |
| 10-Q | Quarterly report | Feb 1, 2023 | Dec 23, 2022 |
| 8-K |
Current report
Results of operations
|
Jan 31, 2023 | Jan 31, 2023 |
| 8-K |
Current report
Agreement ended
|
Nov 17, 2022 | Nov 10, 2022 |
| 10-Q | Quarterly report | Oct 31, 2022 | Sep 23, 2022 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2022 | Oct 27, 2022 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Oct 3, 2022 | Sep 29, 2022 |
| 8-K |
Current report
Officer or director change
|
Sep 1, 2022 | Sep 1, 2022 |
| 10-K/A | Amended annual report | Aug 29, 2022 | Mar 25, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Aug 5, 2022 | Aug 4, 2022 |
| 10-Q | Quarterly report | Aug 1, 2022 | Jun 24, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2022 | Jul 28, 2022 |
| DEFA14A | Additional proxy material | Jun 22, 2022 | — |
| DEF 14A | Proxy statement | Jun 22, 2022 | Jun 22, 2022 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jun 21, 2022 | Jun 16, 2022 |
| 8-K |
Current report
Auditor change
|
Jun 10, 2022 | Jun 7, 2022 |
| 10-K | Annual report | May 18, 2022 | Mar 25, 2022 |
| 8-K |
Current report
Results of operations, Officer or director change, Regulation FD disclosure
|
May 9, 2022 | May 6, 2022 |
| 10-Q | Quarterly report | Feb 2, 2022 | Dec 24, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 1, 2022 | Feb 1, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 10, 2022 | Jan 7, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 10, 2021 | Nov 8, 2021 |
| 8-K |
Current report
Other events
|
Nov 3, 2021 | Nov 1, 2021 |
| 424B7 | Filing | Nov 2, 2021 | — |
| FWP | Free writing prospectus | Nov 1, 2021 | — |
| S-3ASR | Automatic shelf registration | Nov 1, 2021 | — |
| 10-Q | Quarterly report | Oct 29, 2021 | Sep 24, 2021 |
| 8-K/A |
Amended current report
Results of operations
|
Oct 28, 2021 | Oct 28, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2021 | Oct 28, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Aug 9, 2021 | Aug 5, 2021 |
| 10-Q | Quarterly report | Jul 30, 2021 | Jun 25, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2021 | Jul 29, 2021 |
| 8-K/A |
Amended current report
Officer or director change
|
Jul 21, 2021 | May 25, 2021 |
| DEF 14A | Proxy statement | Jul 2, 2021 | Jul 1, 2021 |
| DEFA14A | Additional proxy material | Jul 1, 2021 | — |
| 8-K |
Current report
Material agreement
|
Jul 1, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Officer or director change
|
May 27, 2021 | May 25, 2021 |
| 10-K | Annual report | May 19, 2021 | Mar 26, 2021 |
| 8-K |
Current report
Officer or director change
|
May 10, 2021 | May 5, 2021 |
| 8-K |
Current report
Results of operations
|
May 5, 2021 | May 5, 2021 |
| 8-K |
Current report
Other events
|
Apr 9, 2021 | Apr 9, 2021 |
| 8-K |
Current report
Impairment
|
Mar 9, 2021 | Mar 3, 2021 |
| 424B4 | Prospectus | Feb 8, 2021 | — |
| EFFECT | Filing | Feb 4, 2021 | — |
| S-1MEF | Filing | Feb 4, 2021 | — |
| 10-Q | Quarterly report | Feb 2, 2021 | Dec 25, 2020 |
| CORRESP | Letter to the SEC | Feb 2, 2021 | — |
| CORRESP | Letter to the SEC | Feb 2, 2021 | — |
| S-1 | Registration statement | Feb 2, 2021 | — |
| 8-K |
Current report
Results of operations
|
Feb 2, 2021 | Feb 2, 2021 |
| UPLOAD | Letter from the SEC | Jan 28, 2021 | — |
| DRS | Filing | Jan 25, 2021 | — |
| 10-Q | Quarterly report | Nov 20, 2020 | Sep 25, 2020 |
| 8-K/A |
Amended current report
Results of operations
|
Nov 19, 2020 | Nov 19, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 19, 2020 | Nov 19, 2020 |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change
|
Nov 2, 2020 | Nov 2, 2020 |
| S-8 | Employee stock plan registration | Oct 30, 2020 | — |
| 424B4 | Prospectus | Oct 30, 2020 | — |
| 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 | — |
| S-1/A | Amended registration statement | Oct 21, 2020 | — |
| SEC STAFF LETTER | Filing | Oct 14, 2020 | — |
| S-1/A | Amended registration statement | Oct 13, 2020 | — |
| S-1 | Registration statement | Oct 6, 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 | — |
| S-1/A | Amended registration statement | Mar 7, 2008 | — |
| S-1/A | Amended registration statement | Jan 29, 2008 | — |
| S-1/A | Amended registration statement | Nov 30, 2007 | — |
| S-1 | Registration statement | Aug 8, 2007 | — |
Showing 157 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.