{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-423433","form_type":"8-K","ticker":"ERAS","cik":"0001761918","company_name":"Erasca, Inc.","filed_at":"2026-10-16T13:00:14+00:00","discovered_at":"2026-10-16T13:01:00.189197+00:00","generated_at":"2026-10-16T13:01:05.091119+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Erasca COO Nicholas Chetwyn to exit Nov 2 as company realigns leadership for RAS programs","bullets":["Chief Operating Officer Nicholas (Nik) Chetwyn, Ph.D. will terminate employment effective November 2, 2026; Erasca decided on the realignment October 15, 2026.","COO responsibilities are transitioning to other members of the leadership team to streamline the reporting structure; no successor was named.","Erasca said the change supports development and potential commercialization of its RAS-targeting programs.","Filing discloses no severance, transition agreement, or compensation terms for Chetwyn's departure."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-423433","json":"https://secwatch.observer/filing/0001193125-26-423433.json","markdown":"https://secwatch.observer/filing/0001193125-26-423433.md","text":"https://secwatch.observer/filing/0001193125-26-423433.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1761918/000119312526423433/0001193125-26-423433-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1761918/000119312526423433/eras-20261015.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-16T13:01:05.091119+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"}