{"schema_version":"secwatch.filing_event.v1","accession":"0001860782-24-000030","form_type":"8-K","ticker":null,"cik":"0001860782","company_name":"2seventy bio, Inc.","filed_at":"2024-03-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:26.123181+00:00","generated_at":"2026-06-04T22:33:01.053659+00:00","sec_items":["5.03"],"event_type":"other","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"2seventy bio extends director nomination deadline for 2024 annual meeting to March 22","bullets":["Board of Directors extended deadline for notice of director nominations to March 22, 2024 at 5:00 PM ET.","Extension applies only to nominations for election at the 2024 Annual Meeting.","Notices must comply with Bylaws and applicable law to be considered timely.","No other changes to the annual meeting or fiscal year were announced."],"urls":{"canonical":"https://secwatch.observer/filing/0001860782-24-000030","json":"https://secwatch.observer/filing/0001860782-24-000030.json","markdown":"https://secwatch.observer/filing/0001860782-24-000030.md","text":"https://secwatch.observer/filing/0001860782-24-000030.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1860782/000186078224000030/0001860782-24-000030-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1860782/000186078224000030/tvst-20240312.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-04T22:33:01.053659+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":"9f082c234e3ec5d50424e2501c30d66278ee0026","claim":"2seventy bio, Inc.: Extended the deadline for director nominations for the 2024 annual meeting to March 22, 2024 (effective 2024-03-12).","evidence_excerpt":"On March 12, 2024 the Board of Directors of 2seventy bio, Inc. (the “Company”) extended the deadline for notice of director nominations for consideration at the 2024 annual meeting of stockholders of the Company (the “2024 Annual Meeting”) to March 22, 2024 pursuant to the Company’s Amended and Restated Bylaws (the “Bylaws”).","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1860782/000186078224000030/0001860782-24-000030-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2024-03-12"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}