{"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","discovered_at":"2026-05-14T18:03:24.614129+00:00","generated_at":"2026-06-05T00:31:11.985542+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"MasTec replaces BDO with PwC as auditor; prior material weaknesses remediated","bullets":["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."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-062573","json":"https://secwatch.observer/filing/0001193125-24-062573.json","markdown":"https://secwatch.observer/filing/0001193125-24-062573.md","text":"https://secwatch.observer/filing/0001193125-24-062573.txt","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"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-05T00:31:11.985542+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"0adaccf02492b2ca15e4766b86d6c325953f85ef","claim":"MASTEC INC dismissed BDO USA, P.C. as its auditor.","evidence_excerpt":"BDO was dismissed as the Company’s independent registered public accounting firm, effective as of March 5, 2024.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/15615/000119312524062573/0001193125-24-062573-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"dismissal"},{"label":"Auditor","value":"BDO USA, P.C."},{"label":"Successor","value":"PricewaterhouseCoopers LLP"}],"fact_type":"auditor_change"},{"claim_id":"ec9682f812315ba7fcac00561573ebeb98b27378","claim":"MASTEC INC engaged PricewaterhouseCoopers LLP as its auditor.","evidence_excerpt":"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_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/15615/000119312524062573/0001193125-24-062573-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"engagement"},{"label":"Auditor","value":"PricewaterhouseCoopers LLP"}],"fact_type":"auditor_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}