{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-071337","form_type":"8-K","ticker":"ZYME","cik":"0001937653","company_name":"Zymeworks Inc.","filed_at":"2023-03-15T23:59:59+00:00","discovered_at":"2026-05-14T18:03:47.473674+00:00","generated_at":"2026-06-18T02:32:34.002641+00:00","sec_items":["5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Zymeworks adopts amended bylaws revising stockholder nomination and proposal procedures","bullets":["Advance notice deadline changed: if annual meeting date shifts >25 days, notice due later of 10th day after announcement or 90th day before meeting.","Stockholder nominators must disclose intent to solicit under Rule 14a-19 and provide compliance evidence 5 business days before meeting.","Board size increase capped at no more than 1/3 of directors in office since last annual meeting, consistent with certificate of incorporation.","Other updates include adjournment procedures for technical failures and ministerial/clarifying changes."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-071337","json":"https://secwatch.observer/filing/0001193125-23-071337.json","markdown":"https://secwatch.observer/filing/0001193125-23-071337.md","text":"https://secwatch.observer/filing/0001193125-23-071337.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1937653/000119312523071337/0001193125-23-071337-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1937653/000119312523071337/d485013d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-18T02:32:34.002641+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":"ad7dfe979b8e1071cc176a12e92c6d33c728b329","claim":"Zymeworks Inc.: Amended and restated bylaws to revise advance notice procedures, meeting adjournment, and board size provisions (effective 2023-03-09).","evidence_excerpt":"On March 9, 2023, the board of directors (the “Board”) of Zymeworks Inc. (the “Company”) approved and adopted amended and restated bylaws (the “Amended and Restated Bylaws”), effective immediately.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1937653/000119312523071337/0001193125-23-071337-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-03-09"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}