{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-388621","form_type":"8-K","ticker":"KPTI","cik":"0001503802","company_name":"Karyopharm Therapeutics Inc.","filed_at":"2026-09-11T11:45:19+00:00","discovered_at":"2026-09-11T11:50:31.315090+00:00","generated_at":"2026-09-11T11:50:47.935223+00:00","sec_items":["1.01","2.04","3.02","8.01","9.01"],"event_type":"debt","sentiment":"negative","materiality_score":0.98,"calibrated_materiality_score":0.98,"confidence":"high","headline":"Karyopharm misses $15.8M debt payment, enters forbearance; going-concern doubt through Oct 15","bullets":["Missed $15.8M principal installment due Sept 10, 2026 under Credit Agreement; events of default and cross-defaults triggered.","Forbearance runs to Oct 15, 2026; no waiver of defaults, creditors reserve remedies; defaulted debt bears +2.00% interest.","Issuing 20,000 shares of 0% convertible preferred stock at $1,000/share to pay $20M forbearance fees; conversion at $1.62/share.","Liquidity funds operations only until Oct 15, 2026; absent new funding or deal, company unable to continue as going concern.","Outstanding: ~$129M term loan, $15.6M 2028 notes, $108M 2029 notes; $113.5M future royalty obligations."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-388621","json":"https://secwatch.observer/filing/0001193125-26-388621.json","markdown":"https://secwatch.observer/filing/0001193125-26-388621.md","text":"https://secwatch.observer/filing/0001193125-26-388621.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1503802/000119312526388621/0001193125-26-388621-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1503802/000119312526388621/d94769d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-11T11:50:47.935223+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"}