Bel Fuse Inc /NJ SEC filings BELFB
Bel Fuse Inc /NJ has 1,003 filings in SEC EDGAR's recent list, going back to Feb 2, 2001. Its latest annual report, Form ARS, was filed on Apr 10, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 3, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 3, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2026 | Oct 28, 2026 |
| 3 | Initial insider ownership | Oct 7, 2026 | Sep 28, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 14, 2026 |
| 144 | Notice of proposed sale | Sep 14, 2026 | — |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| S-8 | Employee stock plan registration | Sep 1, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Aug 14, 2026 | Aug 12, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 144 | Notice of proposed sale | Aug 12, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| 10-Q | Quarterly report | Aug 4, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2026 | — |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 28, 2026 | May 22, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2026 | — |
| 424B5 | Prospectus supplement | May 14, 2026 | — |
| 8-K |
Current report
Material agreement, Other events
|
May 14, 2026 | May 12, 2026 |
| POSASR | Amendment no. 1 form s-3asr | May 13, 2026 | — |
| 424B5 | Prospectus supplement | May 13, 2026 | — |
| S-3ASR | Automatic shelf registration | May 12, 2026 | — |
| 8-K |
Current report
Other events
|
May 12, 2026 | Dec 31, 2025 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| 8-K |
Current report
Results of operations
|
Apr 29, 2026 | Apr 29, 2026 |
| DEFA14A | Additional proxy material | Apr 17, 2026 | — |
| ARS | Annual report to shareholders | Apr 10, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 10, 2026 | — |
| DEF 14A | Proxy statement | Apr 10, 2026 | May 26, 2026 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Apr 6, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 15, 2026 |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 144 | Notice of proposed sale | Mar 10, 2026 | — |
| 144 | Notice of proposed sale | Mar 10, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Feb 26, 2026 | Feb 25, 2026 |
| 144 | Notice of proposed sale | Feb 26, 2026 | — |
| 144 | Notice of proposed sale | Feb 25, 2026 | — |
| 4 | Insider transaction | Feb 25, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 23, 2026 |
| 144 | Notice of proposed sale | Feb 25, 2026 | — |
| 8-K/A |
Amended current report
Auditor change
|
Feb 24, 2026 | Dec 4, 2025 |
| 10-K | Annual report | Feb 24, 2026 | Dec 31, 2025 |
| 144 | Notice of proposed sale | Feb 24, 2026 | — |
| 8-K |
Current report
Results of operations
|
Feb 17, 2026 | Feb 17, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 3 | Initial insider ownership | Feb 4, 2026 | Jan 26, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 28, 2026 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Jan 15, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Dec 16, 2025 | Dec 12, 2025 |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 8-K |
Current report
Auditor change
|
Dec 10, 2025 | Dec 4, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 9, 2025 | — |
| 8-K |
Current report
Impairment, Regulation FD disclosure
|
Dec 3, 2025 | Nov 26, 2025 |
| 4 | Insider transaction | Nov 19, 2025 | Nov 17, 2025 |
| 4 | Insider transaction | Nov 19, 2025 | Nov 17, 2025 |
| 4 | Insider transaction | Nov 19, 2025 | Nov 17, 2025 |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 144 | Notice of proposed sale | Nov 17, 2025 | — |
| 4 | Insider transaction | Nov 14, 2025 | Nov 12, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 5, 2025 | — |
| 10-Q | Quarterly report | Nov 4, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2025 | Oct 29, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 5, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 29, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 4, 2025 | — |
| 4 | Insider transaction | Aug 4, 2025 | Aug 1, 2025 |
| 144 | Notice of proposed sale | Aug 1, 2025 | — |
| 4 | Insider transaction | Aug 1, 2025 | Jul 31, 2025 |
| 144 | Notice of proposed sale | Jul 31, 2025 | — |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 31, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jul 24, 2025 | Jul 24, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 3, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jun 16, 2025 | Jun 13, 2025 |
| 144 | Notice of proposed sale | Jun 13, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 28, 2025 | May 27, 2025 |
| 8-K |
Current report
Officer or director change
|
May 21, 2025 | May 20, 2025 |
| 8-K |
Current report
New debt
|
May 6, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 30, 2025 |
| 10-Q | Quarterly report | May 1, 2025 | Mar 31, 2025 |
| 144 | Notice of proposed sale | Apr 30, 2025 | — |
| 8-K |
Current report
Results of operations
|
Apr 24, 2025 | Apr 24, 2025 |
| ARS | Annual report to shareholders | Apr 11, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| DEF 14A | Proxy statement | Apr 11, 2025 | May 27, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 18, 2025 | Mar 12, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 10-K | Annual report | Feb 28, 2025 | Dec 31, 2024 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Feb 20, 2025 | — |
| 8-K |
Current report
Results of operations, Officer or director change
|
Feb 18, 2025 | Feb 18, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 10, 2025 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 7, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 8-K/A | Amended current report | Jan 29, 2025 | Nov 14, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 20, 2024 | — |
| 4 | Insider transaction | Nov 26, 2024 | Nov 26, 2024 |
| 144 | Notice of proposed sale | Nov 25, 2024 | — |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 21, 2024 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Nov 20, 2024 | Nov 14, 2024 |
| 144 | Notice of proposed sale | Nov 20, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 15, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 7, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| 10-Q | Quarterly report | Oct 29, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 23, 2024 | Oct 23, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 17, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 7, 2024 | — |
| 8-K |
Current report
Material agreement, New debt
|
Sep 24, 2024 | Sep 18, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 20, 2024 | — |
| 8-K |
Current report
Results of operations, Other events
|
Sep 19, 2024 | Sep 18, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 15, 2024 | — |
| 8-K | Current report | Aug 6, 2024 | Aug 3, 2024 |
| 10-Q | Quarterly report | Jul 31, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 24, 2024 | Jul 24, 2024 |
| 3 | Initial insider ownership | Jul 2, 2024 | Jul 1, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 2, 2024 | Jul 1, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2024 | — |
| 3 | Initial insider ownership | May 17, 2024 | May 14, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 14, 2024 | May 14, 2024 |
| 10-Q | Quarterly report | Apr 30, 2024 | Mar 31, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 29, 2024 | — |
| 8-K |
Current report
Results of operations, Other events
|
Apr 25, 2024 | Apr 25, 2024 |
| SC 13G | Ownership over 5% (passive) | Apr 23, 2024 | — |
| DEFA14A | Additional proxy material | Apr 1, 2024 | — |
| DEF 14A | Proxy statement | Apr 1, 2024 | May 14, 2024 |
| ARS | Annual report to shareholders | Apr 1, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 144 | Notice of proposed sale | Mar 13, 2024 | — |
| 10-K | Annual report | Mar 11, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 7, 2024 | — |
| 8-K |
Current report
Officer or director change, Other events
|
Mar 7, 2024 | Mar 1, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 21, 2024 | Feb 21, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jan 26, 2024 | — |
| 8-K |
Current report
Other events
|
Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 16, 2024 | — |
| 4 | Insider transaction | Dec 15, 2023 | Dec 15, 2023 |
Showing 200 filings, the most recent 200. 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
- Electronic Coils, Transformers & Other Inductors (SIC 3677)
- Listed as
- BELFA (Nasdaq), BELFB (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- NJ
- Headquarters
- West Orange, NJ
- SEC filer status
- Large accelerated filer
- SEC CIK
- 729580
Source: SEC EDGAR filings. This is company-reported data, not investment advice.