---
schema_version: "secwatch.filing_event.v1"
accession: "0001174947-25-000378"
form_type: "8-K"
ticker: "IEHC"
cik: "0000050292"
company_name: "IEH Corp"
filed_at: "2025-03-21T23:59:59+00:00"
generated_at: "2026-05-24T09:25:36.416561+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# IEH replaces auditor Marcum with CBIZ CPAs after Marcum attest business sale

## Summary
- Marcum LLP resigned as independent auditor on March 18, 2025, effective immediately.
- CBIZ CPAs P.C. engaged as new independent auditor for fiscal year ending March 31, 2025.
- Audit team from Marcum is expected to continue servicing the Company under CBIZ.
- No disagreements or reportable events occurred in fiscal years 2023 and 2024.
- Change stems from CBIZ acquiring Marcum's attest business effective November 1, 2024.

## SEC filing metadata
- accession: 0001174947-25-000378
- form_type: 8-K
- ticker: IEHC
- cik: 0000050292
- company_name: IEH Corp
- filed_at: 2025-03-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/50292/000117494725000378/0001174947-25-000378-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/50292/000117494725000378/form8k-33864_ieh.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001174947-25-000378
- JSON: https://secwatch.observer/filing/0001174947-25-000378.json
- Plain text: https://secwatch.observer/filing/0001174947-25-000378.txt

## Key facts
- Auditor Changes
  IEH Corp engaged CBIZ CPAs P.C. as its auditor.
  - Action: engagement
  - Auditor: CBIZ CPAs P.C.
  source text: On March 18, 2025, Marcum resigned as the Company’s independent registered public accounting firm, and CBIZ CPAs was engaged to serve as the independent registered public accounting firm for the Company for the fiscal year ending March 31, 2025, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/50292/000117494725000378/0001174947-25-000378-index.htm
- Auditor Changes
  Marcum LLP resigned as auditor of IEH Corp.
  - Action: resignation
  - Auditor: Marcum LLP
  - Successor: CBIZ CPAs P.C.
  source text: On March 18, 2025, Marcum resigned as the Company’s independent registered public accounting firm, and CBIZ CPAs was engaged to serve as the independent registered public accounting firm for the Company for the fiscal year ending March 31, 2025, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/50292/000117494725000378/0001174947-25-000378-index.htm

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