{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-165284","form_type":"8-K","ticker":"ZYME","cik":"0001937653","company_name":"Zymeworks Inc.","filed_at":"2023-06-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:41.604344+00:00","generated_at":"2026-06-14T03:19:50.448750+00:00","sec_items":["3.03","5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Zymeworks terminates shareholder rights plan; eliminates Series B Preferred Stock","bullets":["Preferred stock purchase rights under Rights Agreement expired on June 8, 2023, terminating the plan.","Certificate of Elimination filed June 12, 2023 eliminates Series B Participating Preferred Stock.","Series B Preferred shares revert to authorized but unissued preferred stock."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-165284","json":"https://secwatch.observer/filing/0001193125-23-165284.json","markdown":"https://secwatch.observer/filing/0001193125-23-165284.md","text":"https://secwatch.observer/filing/0001193125-23-165284.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1937653/000119312523165284/0001193125-23-165284-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1937653/000119312523165284/d505663d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-14T03:19:50.448750+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":"b15f287e0632a8374caf7443f1d63abe6251f863","claim":"Zymeworks Inc.: The Company filed a Certificate of Elimination to eliminate its Series B Participating Preferred Stock, effective upon filing on June 12, 2023, following the termination of the Rights Agreement (effective 2023-06-12).","evidence_excerpt":"the Company filed a Certificate of Elimination with the Secretary of State of the State of Delaware on June 12, 2023, which, effective upon filing, eliminated the Company’s Series B Participating Preferred Stock, par value $0.00001 per share (the “Series B Preferred Stock”).","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1937653/000119312523165284/0001193125-23-165284-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2023-06-12"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}