Company facts
- Industry
- Semiconductors & Related Devices
- Headquarters
- Manchester, New Hampshire
- Most recent report
- 10-Q, filed Oct 30, 2026
- Incorporated
- N/A
- Filings on record
- 530 filings
- On EDGAR
- CIK 866291
- Fiscal year ends
- March
- Filer status
- Large accelerated filer
Financials 8 of 26
News 8 of 73
Prospectuses and Registrations 8 of 16
- 424B5 Prospectus supplement for an offering Jul 25, 2024
- 424B5 Prospectus supplement for an offering Jul 23, 2024
- S-3ASR Automatic shelf registration Jul 23, 2024
- FWP Free writing prospectus Nov 1, 2021
- S-3ASR Automatic shelf registration Nov 1, 2021
- 424B4 Final prospectus for an offering Feb 8, 2021
- S-1 Registration statement for an offering Feb 2, 2021
- S-8 Registration statement for an employee plan Oct 30, 2020
Proxies 8 of 12
- DEFA14A Extra proxy material Jun 24, 2026
- DEF 14A Proxy statement for a shareholder vote Jun 24, 2026
- DEFA14A Extra proxy material Jun 25, 2025
- DEF 14A Proxy statement for a shareholder vote Jun 25, 2025
- DEFA14A Extra proxy material Jun 26, 2024
- DEF 14A Proxy statement for a shareholder vote Jun 26, 2024
- DEFA14A Extra proxy material Jun 21, 2023
- DEF 14A Proxy statement for a shareholder vote Jun 21, 2023
Ownership 8 of 373
- SCHEDULE 13G/A Large holder reported a passive stake, amended Nov 5, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Oct 7, 2026
- 4 Insider reported a trade Oct 1, 2026
- 4 Insider reported a trade Aug 18, 2026
- 144 Notice of a proposed sale of restricted stock Aug 17, 2026
- SCHEDULE 13G Large holder reported a passive stake Aug 13, 2026
- 4 Insider reported a trade Aug 12, 2026
- 144 Notice of a proposed sale of restricted stock Aug 10, 2026
Other 8 of 30
- ARS Annual report sent to shareholders Jun 24, 2026
- SD Conflict minerals disclosure May 29, 2026
- ARS Annual report sent to shareholders Jun 25, 2025
- SD Conflict minerals disclosure May 22, 2025
- 425 Mar 6, 2025
- ARS Annual report sent to shareholders Jun 26, 2024
- SD Conflict minerals disclosure May 13, 2024
- ARS Annual report sent to shareholders Jun 21, 2023
Everything here comes from Allegro Microsystems, Inc.'s own filings on SEC EDGAR. The filing list is rechecked every hour.