{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-026687","form_type":"8-K","ticker":"CENX","cik":"0000949157","company_name":"CENTURY ALUMINUM CO","filed_at":"2025-03-21T23:59:59+00:00","discovered_at":"2026-05-14T18:03:06.914730+00:00","generated_at":"2026-05-24T09:35:48.947976+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Century Aluminum names Peter Trpkovski CFO, succeeding Gerald Bialek in planned transition","bullets":["Trpkovski appointed EVP and CFO effective March 21, 2025; Bialek departs after planned transition.","Trpkovski's annual base salary $450,000; target bonus 65% of base under 2025 Annual Incentive Plan.","Long-term incentive target 160% of base; 50% time-vested stock units, 50% performance stock units for 2025-2027.","Trpkovski joined Century in 2013; prior roles include SVP Finance and Treasurer, VP Finance and IR.","Holds BSE in Electrical/Computer Engineering and MBA from University of Michigan; earlier at Citigroup and Johnson Controls."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-026687","json":"https://secwatch.observer/filing/0001104659-25-026687.json","markdown":"https://secwatch.observer/filing/0001104659-25-026687.md","text":"https://secwatch.observer/filing/0001104659-25-026687.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/0001104659-25-026687-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/tm2510008d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T09:35:48.947976+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":"130d1e54b7","claim":"Peter Trpkovski was appointed as Executive Vice President and Chief Financial Officer at CENTURY ALUMINUM CO.","evidence_excerpt":"has been appointed to Executive Vice President and Chief Financial Officer, effective March 21, 2025","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/0001104659-25-026687-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Executive Vice President and Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"f3224601cb","claim":"Gerald Bialek departed as Executive Vice President and Chief Financial Officer at CENTURY ALUMINUM CO.","evidence_excerpt":"will leave his position as Executive Vice President and Chief Financial Officer as part of a planned transition","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/949157/000110465925026687/0001104659-25-026687-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"leave"},{"label":"Role","value":"Executive Vice President and Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}