---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-062573"
form_type: "8-K"
ticker: "MTZ"
cik: "0000015615"
company_name: "MASTEC INC"
filed_at: "2024-03-08T23:59:59+00:00"
generated_at: "2026-06-05T00:31:11.985542+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# MasTec replaces BDO with PwC as auditor; prior material weaknesses remediated

## Summary
- BDO dismissed as independent auditor effective March 5, 2024; PwC appointed for FY2024.
- BDO's reports for FY2022 and FY2023 were unqualified; no disagreements with management.
- Reportable events: material weaknesses in internal control over financial reporting for FY2022, remediated by December 31, 2023.
- Audit committee conducted competitive selection; BDO acknowledged disclosures in letter filed as Exhibit 16.1.

## SEC filing metadata
- accession: 0001193125-24-062573
- form_type: 8-K
- ticker: MTZ
- cik: 0000015615
- company_name: MASTEC INC
- filed_at: 2024-03-08T23:59:59+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/15615/000119312524062573/0001193125-24-062573-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/15615/000119312524062573/d803245d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-062573
- JSON: https://secwatch.observer/filing/0001193125-24-062573.json
- Plain text: https://secwatch.observer/filing/0001193125-24-062573.txt

## Key facts
- Auditor Changes
  MASTEC INC dismissed BDO USA, P.C. as its auditor.
  - Action: dismissal
  - Auditor: BDO USA, P.C.
  - Successor: PricewaterhouseCoopers LLP
  source text: BDO was dismissed as the Company’s independent registered public accounting firm, effective as of March 5, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/15615/000119312524062573/0001193125-24-062573-index.htm
- Auditor Changes
  MASTEC INC engaged PricewaterhouseCoopers LLP as its auditor.
  - Action: engagement
  - Auditor: PricewaterhouseCoopers LLP
  source text: the Audit Committee approved and the Board ratified the engagement of PwC as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/15615/000119312524062573/0001193125-24-062573-index.htm

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