---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-037380"
form_type: "8-K"
ticker: "BELFA"
cik: "0000729580"
company_name: "BEL FUSE INC /NJ"
filed_at: "2025-12-10T23:59:59+00:00"
generated_at: "2026-05-16T13:42:47.022581+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Bel Fuse dismisses Grant Thornton as auditor; appoints Deloitte for FY 2026

## Summary
- Audit Committee dismissed Grant Thornton on Dec 4, 2025; Deloitte appointed as new independent auditor for FY 2026.
- No disagreements with Grant Thornton on accounting principles or reporting during FY 2023-2024 and interim period.
- Grant Thornton's reports for FY 2023 and 2024 were unqualified, no adverse opinions.
- Deloitte engagement starts with Q1 2026 review; contingent on successful client acceptance procedures.

## SEC filing metadata
- accession: 0001437749-25-037380
- form_type: 8-K
- ticker: BELFA
- cik: 0000729580
- company_name: BEL FUSE INC /NJ
- filed_at: 2025-12-10T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/729580/000143774925037380/0001437749-25-037380-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/729580/000143774925037380/belfa20251204_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-037380
- JSON: https://secwatch.observer/filing/0001437749-25-037380.json
- Plain text: https://secwatch.observer/filing/0001437749-25-037380.txt

## Key facts
- Auditor Changes
  BEL FUSE INC /NJ dismissed Grant Thornton LLP as its auditor.
  - Action: dismissal
  - Auditor: Grant Thornton LLP
  - Successor: Deloitte & Touche LLP
  source text: (a) Dismissal of Independent Registered Public Accounting Firm . On December 4, 2025, the Audit Committee (the "Audit Committee") of Bel Fuse Inc.'s (“Bel”) Board of Directors (the “Board”), dismissed Grant Thornton LLP (“Grant Thornton”), which is currently serving as Bel’s independent registered public accounting firm and notified Grant Thornton on December 5, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/729580/000143774925037380/0001437749-25-037380-index.htm
- Auditor Changes
  BEL FUSE INC /NJ engaged Deloitte & Touche LLP as its auditor.
  - Action: engagement
  - Auditor: Deloitte & Touche LLP
  source text: Grant Thornton was previously engaged to audit the Company’s consolidated financial statements for the year ending December 31, 2025. The appointment of Deloitte & Touche LLP does not affect Grant Thornton’s engagement for the year ended December 31, 2025. The decision to change independent registered public accounting firms was recommended by the Audit Committee and approved by the Board on December 4, 2025. During Bel’s two most recent fiscal years ended December 31, 2023 and 2024, and the subsequent interim period through December 4, 2025, (i) Bel has not had any disagreements with Grant Thornton on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which, if not resolved to Grant Thornton’s satisfaction, would have caused Grant Thornton to make reference to the subject matter thereof in connection with its reports on Bel’s
  evidence_url: https://www.sec.gov/Archives/edgar/data/729580/000143774925037380/0001437749-25-037380-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.