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 |
|---|---|---|---|
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Insider trade | 4 | 2025-03-18 | 2025-03-15 |
| Annual report | 10-K | 2025-02-28 | 2024-12-31 |
| SCHEDULE 13D/A | - | 2025-02-20 | - |
| Major company event | 8-K | 2025-02-18 | 2025-02-18 |
| SCHEDULE 13G | - | 2025-02-10 | - |
| Major company event | 8-K | 2025-02-07 | 2025-02-03 |
| Insider trade | 4 | 2025-02-04 | 2025-02-03 |
| Major company event (amended) | 8-K/A | 2025-01-29 | 2024-11-14 |
| SCHEDULE 13G/A | - | 2024-12-20 | - |
| Insider trade | 4 | 2024-11-26 | 2024-11-26 |
| Insider sale notice | 144 | 2024-11-25 | - |
| Insider trade | 4 | 2024-11-22 | 2024-11-20 |
| Insider trade | 4 | 2024-11-22 | 2024-11-21 |
| Major company event | 8-K | 2024-11-20 | 2024-11-14 |
| Insider sale notice | 144 | 2024-11-20 | - |
| Activist ownership stake (update) | SC 13D/A | 2024-11-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2024-11-12 | - |
| Activist ownership stake (update) | SC 13D/A | 2024-11-07 | - |
| Passive ownership stake (update) | SC 13G/A | 2024-11-04 | - |
| Quarterly report | 10-Q | 2024-10-29 | 2024-09-30 |
| Major company event | 8-K | 2024-10-23 | 2024-10-23 |
| Activist ownership stake (update) | SC 13D/A | 2024-10-17 | - |
| Activist ownership stake (update) | SC 13D/A | 2024-10-07 | - |
| Major company event | 8-K | 2024-09-24 | 2024-09-18 |
| Activist ownership stake (update) | SC 13D/A | 2024-09-20 | - |
| Major company event | 8-K | 2024-09-19 | 2024-09-18 |
| Activist ownership stake (update) | SC 13D/A | 2024-08-15 | - |
| Major company event | 8-K | 2024-08-06 | 2024-08-03 |
| Quarterly report | 10-Q | 2024-07-31 | 2024-06-30 |
| Major company event | 8-K | 2024-07-24 | 2024-07-24 |
| New insider ownership | 3 | 2024-07-02 | 2024-07-01 |
| Major company event | 8-K | 2024-07-02 | 2024-07-01 |
| SD | - | 2024-05-30 | - |
| New insider ownership | 3 | 2024-05-17 | 2024-05-14 |
| Major company event | 8-K | 2024-05-14 | 2024-05-14 |
| Quarterly report | 10-Q | 2024-04-30 | 2024-03-31 |
| Activist ownership stake (update) | SC 13D/A | 2024-04-29 | - |
| Major company event | 8-K | 2024-04-25 | 2024-04-25 |
| Passive ownership stake | SC 13G | 2024-04-23 | - |
| Proxy materials | DEFA14A | 2024-04-01 | - |
| Proxy statement | DEF 14A | 2024-04-01 | 2024-05-14 |
| Annual report to shareholders | ARS | 2024-04-01 | 2023-12-31 |
| Insider trade | 4 | 2024-03-15 | 2024-03-15 |