{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-428938","form_type":"8-K","ticker":"KPTI","cik":"0001503802","company_name":"Karyopharm Therapeutics Inc.","filed_at":"2026-10-22T20:15:23+00:00","discovered_at":"2026-10-22T20:16:00.127402+00:00","generated_at":"2026-10-22T20:16:08.682849+00:00","sec_items":["8.01"],"event_type":"debt","sentiment":"negative","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Karyopharm extends indenture forbearance period again, now to Nov 1, 2026 from Oct 22","bullets":["Forbearance Period under the Forbearance Agreement and Limited Waiver to Indentures dated September 10, 2026 now ends 11:59 p.m. Eastern on November 1, 2026, instead of October 22, 2026.","Extension was made under Section 19 of the Forbearance Agreement by the applicable parties; no other terms or new consideration disclosed.","Second disclosed extension: prior 8-Ks on September 11, 2026 and October 14, 2026 covered the original agreement and the first push-out of the forbearance date.","Signing officer: Michael Mano, Executive Vice President, Chief Legal Officer and Secretary; company based in Newton, Massachusetts; stock symbol KPTI on Nasdaq."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-428938","json":"https://secwatch.observer/filing/0001193125-26-428938.json","markdown":"https://secwatch.observer/filing/0001193125-26-428938.md","text":"https://secwatch.observer/filing/0001193125-26-428938.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1503802/000119312526428938/0001193125-26-428938-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1503802/000119312526428938/d172630d8k.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-22T20:16:08.682849+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"}