{"schema_version":"secwatch.filing_event.v1","accession":"0001447362-22-000058","form_type":"8-K","ticker":"CSTL","cik":"0001447362","company_name":"CASTLE BIOSCIENCES INC","filed_at":"2022-04-07T23:59:59+00:00","discovered_at":"2026-05-14T18:04:00.760662+00:00","generated_at":"2026-06-26T08:45:25.031535+00:00","sec_items":["1.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Castle Biosciences signs 126-month lease for 44,677 sq ft Pittsburgh office/lab","bullets":["Initial term of 126 months; first 36 months 20,856 sq ft, expanding to 44,677 sq ft from month 37.","Base rent: $3.62/sq ft/yr first six months, then $28.62–$34.84/sq ft/yr over term.","Landlord contributes up to $2.5M for leasehold improvements; company pays excess.","Company has option to extend lease for one additional five-year period at fair market rent subject to floor.","Early termination option after month 90 with $2.3M fee, subject to adjustment."],"urls":{"canonical":"https://secwatch.observer/filing/0001447362-22-000058","json":"https://secwatch.observer/filing/0001447362-22-000058.json","markdown":"https://secwatch.observer/filing/0001447362-22-000058.md","text":"https://secwatch.observer/filing/0001447362-22-000058.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1447362/000144736222000058/0001447362-22-000058-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1447362/000144736222000058/cstl-20220401.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-26T08:45:25.031535+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}