BELFB - CIK 0000729580
BEL FUSE INC /NJ has filed 1,050 documents with the SEC between 1994 and 2026. The most frequent type is insider trade (261 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| SCHEDULE 13G | - | 2026-05-15 | - |
| SCHEDULE 13G/A | - | 2026-05-15 | - |
| SCHEDULE 13G | - | 2026-05-15 | - |
| Prospectus supplement | 424B5 | 2026-05-14 | - |
| Major company event | 8-K | 2026-05-14 | 2026-05-12 |
| POSASR | - | 2026-05-13 | - |
| Prospectus supplement | 424B5 | 2026-05-13 | - |
| Major company event | 8-K | 2026-05-12 | 2025-12-31 |
| S-3ASR | - | 2026-05-12 | - |
| Quarterly report | 10-Q | 2026-05-05 | 2026-03-31 |
| SCHEDULE 13G | - | 2026-04-29 | - |
| Major company event | 8-K | 2026-04-29 | 2026-04-29 |
| Proxy materials | DEFA14A | 2026-04-17 | - |
| Annual report to shareholders | ARS | 2026-04-10 | 2025-12-31 |
| Proxy materials | DEFA14A | 2026-04-10 | - |
| Proxy statement | DEF 14A | 2026-04-10 | 2026-05-26 |
| Major company event | 8-K | 2026-04-06 | 2026-03-31 |
| SCHEDULE 13G/A | - | 2026-03-26 | - |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-17 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider trade | 4 | 2026-03-17 | 2026-03-15 |
| Insider sale notice | 144 | 2026-03-11 | - |
| Insider sale notice | 144 | 2026-03-11 | - |
| Insider sale notice | 144 | 2026-03-10 | - |
| Insider sale notice | 144 | 2026-03-10 | - |
| Insider trade | 4 | 2026-03-09 | 2026-03-05 |
| Insider sale notice | 144 | 2026-02-26 | - |
| Insider trade | 4 | 2026-02-26 | 2026-02-25 |
| Insider sale notice | 144 | 2026-02-25 | - |
| Insider trade | 4 | 2026-02-25 | 2026-02-24 |
| Insider trade | 4 | 2026-02-25 | 2026-02-23 |
| Insider sale notice | 144 | 2026-02-25 | - |
| Insider sale notice | 144 | 2026-02-24 | - |
| Major company event (amended) | 8-K/A | 2026-02-24 | 2025-12-04 |
| Annual report | 10-K | 2026-02-24 | 2025-12-31 |
| Major company event | 8-K | 2026-02-17 | 2026-02-17 |
| SCHEDULE 13G | - | 2026-02-17 | - |
| SCHEDULE 13G | - | 2026-02-17 | - |
| New insider ownership | 3 | 2026-02-04 | 2026-01-26 |