{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-24-124067","form_type":"8-K","ticker":"KPTI","cik":"0001503802","company_name":"Karyopharm Therapeutics Inc.","filed_at":"2024-11-08T23:59:59+00:00","discovered_at":"2026-05-14T18:03:08.616788+00:00","generated_at":"2026-05-30T02:46:54.462745+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.45,"calibrated_materiality_score":0.45,"confidence":"high","headline":"Karyopharm reduces office space by 46,278 sq ft, extends lease for remaining space through 2030","bullets":["Reduces leased premises by 46,278 rentable square feet (from 98,502 to 52,224) effective Sept 30, 2025.","Term for remaining 52,224 sq ft extended five years through Sept 30, 2030, with annual rent escalation.","Annual base rent for remaining space starts at $35.75/sq ft ($1.87M) and rises to $39.75/sq ft ($2.08M) by year 5.","Landlord provides $2,219,520 tenant improvement allowance ($42.50/sq ft) for work in the retained premises.","Tenant surrenders vacated portion on Sept 30, 2025, without required removal of certain initial alterations."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-24-124067","json":"https://secwatch.observer/filing/0000950170-24-124067.json","markdown":"https://secwatch.observer/filing/0000950170-24-124067.md","text":"https://secwatch.observer/filing/0000950170-24-124067.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1503802/000095017024124067/0000950170-24-124067-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1503802/000095017024124067/kpti-20241105.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-30T02:46:54.462745+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"}