---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-054810"
form_type: "8-K"
ticker: "MX"
cik: "0001325702"
company_name: "MAGNACHIP SEMICONDUCTOR Corp"
filed_at: "2025-03-14T23:59:59+00:00"
generated_at: "2026-05-24T17:59:59.252390+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Magnachip dismisses Samil PWC as auditor, appoints E&Y for FY 2025

## Summary
- Audit Committee dismissed Samil PWC effective after filing 2024 10-K on March 11, 2025.
- No disagreements or reportable events with Samil PWC during 2022-2024 periods.
- Engaged Ernst & Young Han Young as independent auditor for fiscal year ending Dec 31, 2025, contingent on engagement letter.
- Auditor change resulted from competitive RFP process initiated in October 2024.
- Samil PWC's reports on 2023 and 2022 financial statements were unqualified.

## SEC filing metadata
- accession: 0001193125-25-054810
- form_type: 8-K
- ticker: MX
- cik: 0001325702
- company_name: MAGNACHIP SEMICONDUCTOR Corp
- filed_at: 2025-03-14T23:59:59+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/1325702/000119312525054810/0001193125-25-054810-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1325702/000119312525054810/d932398d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-054810
- JSON: https://secwatch.observer/filing/0001193125-25-054810.json
- Plain text: https://secwatch.observer/filing/0001193125-25-054810.txt

## Key facts
- Auditor Changes
  MAGNACHIP SEMICONDUCTOR Corp engaged Ernst & Young Han Young as its auditor.
  - Action: engagement
  - Auditor: Ernst & Young Han Young
  source text: Engagement of new independent registered public accounting firm: Following approval of the Audit Committee, on March 11, 2025, the Company engaged Ernst & Young Han Young (“ E&Y ”) to serve as the Company’s independent registered public accounting firm, for the fiscal year ending December 31, 2025, to be effective following the completion of Samil PWC’s engagement, and contingent upon the execution of a satisfactory engagement letter with the Company following completion of E&Y’s standard client acceptance procedures. The decision to change the Company’s independent registered public accounting firm was the result of the competitive request-for-proposal process undertaken by the Company unde
  evidence_url: https://www.sec.gov/Archives/edgar/data/1325702/000119312525054810/0001193125-25-054810-index.htm
- Auditor Changes
  MAGNACHIP SEMICONDUCTOR Corp dismissed Samil PricewaterhouseCoopers as its auditor.
  - Action: dismissal
  - Auditor: Samil PricewaterhouseCoopers
  - Successor: Ernst & Young Han Young
  source text: Dismissal of independent registered public accounting firm: On March 11, 2025, the Audit Committee (the “ Audit Committee ”) of the Board of Directors of Magnachip Semiconductor Corporation (the “ Company ”) approved the dismissal of Samil PricewaterhouseCoopers (“ Samil PWC ”) as the Company’s independent registered public accounting firm, effective upon the filing of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1325702/000119312525054810/0001193125-25-054810-index.htm

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