{"schema_version":"secwatch.filing_event.v1","accession":"0000773141-24-000020","form_type":"8-K","ticker":null,"cik":"0000773141","company_name":"SEKISUI HOUSE U.S., INC.","filed_at":"2024-04-23T23:59:59+00:00","discovered_at":"2026-05-14T18:03:21.944888+00:00","generated_at":"2026-06-03T12:57:25.247211+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"M.D.C. Holdings grants affiliate of Executive Chairman option to extend sublease through Oct 2028","bullets":["Amendment with CVentures (affiliate of Chairman Larry A. Mizel) extends sublease term option up to two years.","Additional extension term expires no later than October 21, 2028; sublease ends if master lease terminates earlier.","Base rent during extension equals Subtenant's 3.77% proportionate share of master lease base rent.","Sublease covers 5,437 square feet in Denver building; no master lessor consent required.","Related-party transaction: CVentures is an affiliate of M.D.C. Holdings' Executive Chairman."],"urls":{"canonical":"https://secwatch.observer/filing/0000773141-24-000020","json":"https://secwatch.observer/filing/0000773141-24-000020.json","markdown":"https://secwatch.observer/filing/0000773141-24-000020.md","text":"https://secwatch.observer/filing/0000773141-24-000020.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/773141/000077314124000020/0000773141-24-000020-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/773141/000077314124000020/mdc-20240418.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-03T12:57:25.247211+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":"df1a8a96211cbe13292c4b44842a0ad6d46f6ea5","claim":"SEKISUI HOUSE U.S., INC. amended First Amendment to Sublease Agreement with CVentures, Inc. (effective 2024-04-18).","evidence_excerpt":"Effective April 18, 2024, M.D.C. Holdings, Inc. (the “Company”) entered into a First Amendment to Sublease Agreement with CVentures, Inc., an affiliate of Larry A. Mizel, the Company’s Executive Chairman.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/773141/000077314124000020/0000773141-24-000020-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Agreement","value":"lease"},{"label":"Counterparty","value":"CVentures, Inc."},{"label":"Effective","value":"2024-04-18"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}