{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-050986","form_type":"8-K","ticker":"WCN","cik":"0001318220","company_name":"Waste Connections, Inc.","filed_at":"2025-05-20T23:59:59+00:00","discovered_at":"2026-05-14T18:02:47.900310+00:00","generated_at":"2026-05-20T23:44:46.540901+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Waste Connections names Derek Tan SVP & CAO, effective May 19; Black returns to Tax Officer","bullets":["Derek Tan appointed Senior Vice President and Chief Accounting Officer, effective May 19, 2025.","Matthew Black transitions back to his former role of Senior Vice President and Chief Tax Officer on the same date.","Tan receives a $350,000 base salary, target annual bonus of 70% of base, and eligibility for equity awards."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-050986","json":"https://secwatch.observer/filing/0001104659-25-050986.json","markdown":"https://secwatch.observer/filing/0001104659-25-050986.md","text":"https://secwatch.observer/filing/0001104659-25-050986.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1318220/000110465925050986/0001104659-25-050986-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1318220/000110465925050986/tm2515696d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-20T23:44:46.540901+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":"976a1a1557","claim":"Derek Tan was named as Senior Vice President and Chief Accounting Officer at Waste Connections, Inc..","evidence_excerpt":"On May 15, 2025, Waste Connections, Inc. (the “ Company ”) named Derek Tan as the Company’s Senior Vice President and Chief Accounting Officer, effective May 19, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1318220/000110465925050986/0001104659-25-050986-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"named"},{"label":"Role","value":"Senior Vice President and Chief Accounting Officer"}],"fact_type":"executive_change"},{"claim_id":"d4815a6b78","claim":"Matthew S. Black changed role as Senior Vice President and Chief Tax Officer at Waste Connections, Inc..","evidence_excerpt":"Mr. Tan, age 40, assumed the role from Matthew S. Black, who transitioned on that same date to his former role of Senior Vice President and Chief Tax Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1318220/000110465925050986/0001104659-25-050986-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"transitioned"},{"label":"Role","value":"Senior Vice President and Chief Tax Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}