{"schema_version":"secwatch.filing_event.v1","accession":"0001739445-23-000009","form_type":"8-K","ticker":"ACA","cik":"0001739445","company_name":"Arcosa, Inc.","filed_at":"2023-02-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:46.364103+00:00","generated_at":"2026-06-20T03:58:17.097948+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Arcosa appoints Steven J. Demetriou as new independent director","bullets":["Demetriou is Executive Chair of Jacobs Solutions, effective Feb 1, 2023.","He fills the board seat left by Douglas L. Rock, who retired Nov 4, 2022.","Demetriou received 552 RSUs as pro-rata portion of 2022 equity grant.","He serves on Governance and Sustainability and Human Resources Committees."],"urls":{"canonical":"https://secwatch.observer/filing/0001739445-23-000009","json":"https://secwatch.observer/filing/0001739445-23-000009.json","markdown":"https://secwatch.observer/filing/0001739445-23-000009.md","text":"https://secwatch.observer/filing/0001739445-23-000009.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1739445/000173944523000009/0001739445-23-000009-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1739445/000173944523000009/aca-20230201.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-20T03:58:17.097948+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":"dc05dec53d","claim":"Steven J. Demetriou was elected as Director at Arcosa, Inc..","evidence_excerpt":"On February 1, 2023, the Board of Directors (the “Board”) of Arcosa, Inc. (the \"Company\") elected Steven J. Demetriou as a member of the Board, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1739445/000173944523000009/0001739445-23-000009-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}