{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-226903","form_type":"8-K","ticker":"KPTI","cik":"0001503802","company_name":"Karyopharm Therapeutics Inc.","filed_at":"2023-09-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:34.126277+00:00","generated_at":"2026-06-11T00:29:28.013166+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Karyopharm adds Dr. Zhen Su as independent director; board expands to nine","bullets":["Board increased to nine members; Dr. Su elected as Class III director, term through 2025 annual meeting.","Dr. Su receives option for 68,000 shares at $1.28 (closing price on grant date), vesting over three years.","Cash retainer of $50,000 for board service plus $10,000 for committee, prorated from effective date.","Standard indemnification agreement and no related-party transactions requiring disclosure.","Appointed to Commercialization and Portfolio Committee."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-226903","json":"https://secwatch.observer/filing/0001193125-23-226903.json","markdown":"https://secwatch.observer/filing/0001193125-23-226903.md","text":"https://secwatch.observer/filing/0001193125-23-226903.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1503802/000119312523226903/0001193125-23-226903-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1503802/000119312523226903/d539927d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-11T00:29:28.013166+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":"b4419c9131","claim":"Zhen Su was elected as Independent Director at Karyopharm Therapeutics Inc..","evidence_excerpt":"elected Zhen Su, M.D., M.B.A, as an independent director of the Company to fill the newly created vacancy.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1503802/000119312523226903/0001193125-23-226903-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Independent Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}