ALLEGRO MICROSYSTEMS, INC. — All Filings
466 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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10-K
10-K/A
10-Q
144
3
4
424B4
424B5
424B7
425
5
8-A12B
8-K
8-K/A
ARS
CERT
CORRESP
DEF 14A
DEFA14A
DRS
DRS/A
DRSLTR
EFFECT
FWP
RW
S-1
S-1/A
S-1MEF
S-3ASR
S-8
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
SEC STAFF LETTER
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000569 | Mar 26, 2026 | — |
| 4 | 4 | 0001193125-26-124140 | Mar 25, 2026 | Mar 24, 2026 |
| 4 | 4 | 0001193125-26-091544 | Mar 4, 2026 | Feb 2, 2026 |
| 4 | 4 | 0001193125-26-088231 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | 4 | 0001193125-26-088230 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | 4 | 0001193125-26-088228 | Mar 3, 2026 | Feb 27, 2026 |
| 144 | — | 0001959173-26-001649 | Mar 2, 2026 | — |
| 144 | — | 0001959173-26-001642 | Mar 2, 2026 | — |
| 4 | 4 | 0001193125-26-057087 | Feb 18, 2026 | Feb 13, 2026 |
| 4 | 4 | 0001193125-26-057086 | Feb 18, 2026 | Feb 13, 2026 |
| 144 | — | 0001959173-26-001006 | Feb 17, 2026 | — |
| SCHEDULE 13G/A | — | 0001422848-26-000011 | Feb 12, 2026 | — |
| SCHEDULE 13G/A | — | 0000315066-26-000363 | Feb 5, 2026 | — |
| 10-Q | 10-Q | 0001193125-26-030636 | Jan 30, 2026 | Dec 26, 2025 |
| 8-K | 8-K | 0001193125-26-028160 | Jan 29, 2026 | — |
| 8-K | 8-K | 0001193125-26-018091 | Jan 21, 2026 | — |
| 8-K | 8-K | 0001193125-26-014666 | Jan 16, 2026 | Jan 15, 2026 |
| 3 | 3 | 0001193125-26-008940 | Jan 9, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-25-317584 | Dec 12, 2025 | Dec 10, 2025 |
| 144 | — | 0001959173-25-007611 | Dec 10, 2025 | — |
| 4 | 4 | 0001193125-25-277649 | Nov 12, 2025 | Nov 11, 2025 |
| 10-Q | 10-Q | 0001193125-25-259807 | Oct 31, 2025 | Sep 26, 2025 |
| 8-K | 8-K | 0001193125-25-257395 | Oct 30, 2025 | — |
| 3 | 3 | 0001193125-25-241432 | Oct 16, 2025 | Oct 13, 2025 |
| 4 | 4 | 0001970184-25-000003 | Aug 25, 2025 | Aug 22, 2025 |
| 4 | 4 | 0001828865-25-000005 | Aug 13, 2025 | Aug 12, 2025 |
| SCHEDULE 13G/A | — | 0001422848-25-000165 | Aug 13, 2025 | — |
| 144 | — | 0001959173-25-005137 | Aug 12, 2025 | — |
| 4 | 4 | 0000950170-25-105863 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0001195846-25-000003 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0000950170-25-105862 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0001345098-25-000004 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0002016237-25-000003 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0001784973-25-000003 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0001828865-25-000003 | Aug 8, 2025 | Aug 7, 2025 |
| 8-K | 8-K | 0000950170-25-105827 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | 4 | 0000950170-25-103065 | Aug 5, 2025 | Aug 4, 2025 |
| 144 | — | 0001959173-25-004899 | Aug 4, 2025 | — |
| 10-Q | 10-Q | 0000950170-25-101117 | Aug 1, 2025 | Jun 27, 2025 |
| 8-K | 8-K | 0000950170-25-100554 | Jul 31, 2025 | — |
| ARS | ARS | 0000950170-25-089738 | Jun 25, 2025 | Mar 28, 2025 |
| DEFA14A | DEFA14A | 0000950170-25-089737 | Jun 25, 2025 | — |
| DEF 14A | DEF 14A | 0000950170-25-089734 | Jun 25, 2025 | Aug 7, 2025 |
| 4 | 4 | 0000950170-25-085405 | Jun 12, 2025 | Jun 11, 2025 |
| 144 | — | 0001959173-25-003988 | Jun 11, 2025 | — |
| 4 | 4 | 0000950170-25-083094 | Jun 6, 2025 | Jun 4, 2025 |
| 144 | — | 0001969223-25-000391 | Jun 4, 2025 | — |
| SD | SD | 0000950170-25-076064 | May 22, 2025 | — |
| 10-K | 10-K | 0000950170-25-076059 | May 22, 2025 | Mar 28, 2025 |
| 4 | 4 | 0000950170-25-074377 | May 19, 2025 | May 15, 2025 |