{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-23-005439","form_type":"8-K","ticker":null,"cik":"0001733294","company_name":"Generation Bio Co.","filed_at":"2023-04-04T23:59:59+00:00","discovered_at":"2026-05-14T18:03:40.287644+00:00","generated_at":"2026-06-17T06:32:01.215666+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":"Generation Bio amends bylaws for universal proxy rules and technical updates","bullets":["Eliminated requirement to display stockholder list during in-person meetings.","Authorized adoption of emergency bylaws altering quorum and meeting procedures.","Enhanced disclosure requirements for stockholder director nominations per SEC Rule 14a-19.","Requires nominating stockholders to provide evidence of 67% voting power solicitation by 5 business days before meeting.","Non-compliance with Rule 14a-19 allows company to disregard proposed nominees and solicited proxies."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-23-005439","json":"https://secwatch.observer/filing/0001558370-23-005439.json","markdown":"https://secwatch.observer/filing/0001558370-23-005439.md","text":"https://secwatch.observer/filing/0001558370-23-005439.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1733294/000155837023005439/0001558370-23-005439-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1733294/000155837023005439/gbio-20230331x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T06:32:01.215666+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":"a479b1323e18623f18855b625fb5010b9d9e84dd","claim":"Generation Bio Co.: Amended and restated bylaws to eliminate requirement for stockholder list at meeting, address adjournment due to technical failure, authorize emergency bylaws, and revise proxy rules for director nominations (effective 2023-03-31).","evidence_excerpt":"On March 31, 2023, the Board of Directors (the “Board”) of Generation Bio Co. (the “Company”) approved an amendment and restatement of the Company’s Amended and Restated Bylaws (as so amended and restated, 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/1733294/000155837023005439/0001558370-23-005439-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-03-31"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}