{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-283873","form_type":"8-K","ticker":"ZYME","cik":"0001937653","company_name":"Zymeworks Inc.","filed_at":"2025-11-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.100573+00:00","generated_at":"2026-05-16T19:24:18.860649+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Zymeworks announces positive Phase 3 results for Ziihera in first-line HER2+ GEA","bullets":["Ziihera + chemo showed statistically significant PFS improvement vs trastuzumab + chemo; OS trend with further analysis expected mid-2026.","Ziihera + Tevimbra (tislelizumab) + chemo showed statistically significant improvements in both OS and PFS vs control.","PFS and OS benefit observed across PD-L1 positive and negative subgroups in the triple combo arm.","Jazz plans to submit supplemental BLA in 1H-2026; Zymeworks eligible for milestones and royalties.","Safety profile consistent with known safety of each agent; no new signals observed."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-283873","json":"https://secwatch.observer/filing/0001193125-25-283873.json","markdown":"https://secwatch.observer/filing/0001193125-25-283873.md","text":"https://secwatch.observer/filing/0001193125-25-283873.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1937653/000119312525283873/0001193125-25-283873-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1937653/000119312525283873/d17392d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T19:24:18.860649+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"}