{"schema_version":"secwatch.filing_event.v1","accession":"0001530950-23-000026","form_type":"8-K","ticker":"POST","cik":"0001530950","company_name":"Post Holdings, Inc.","filed_at":"2023-01-17T23:59:59+00:00","discovered_at":"2026-05-14T18:03:45.417511+00:00","generated_at":"2026-06-20T14:41:21.269823+00:00","sec_items":["5.03","5.08","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"medium","headline":"Post Holdings amends bylaws to shorten advance notice window for director nominations","bullets":["Advance notice window reduced from 120-150 days to 90-120 days before prior year's annual meeting anniversary.","New notice period for 2024 annual meeting: between September 28, 2023 and October 28, 2023.","Amendment effective January 15, 2023; Sixth Amended and Restated Bylaws adopted.","No other changes to governance or fiscal year."],"urls":{"canonical":"https://secwatch.observer/filing/0001530950-23-000026","json":"https://secwatch.observer/filing/0001530950-23-000026.json","markdown":"https://secwatch.observer/filing/0001530950-23-000026.md","text":"https://secwatch.observer/filing/0001530950-23-000026.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1530950/000153095023000026/0001530950-23-000026-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1530950/000153095023000026/post-20230115.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-20T14:41:21.269823+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":"c58a791b86dbc768a84c90e120018cf628c4486e","claim":"Post Holdings, Inc.: Revised the advance notice window for shareholder director nominations from 120-150 days to 90-120 days prior to the first anniversary of the prior year's annual meeting (effective 2023-01-15).","evidence_excerpt":"The sixth Amended and Restated Bylaws revised the advance notice window for a shareholder to provide notice of the nomination of a director in Article II, Section 1(d) from not less than 120 days nor more than 150 days prior to the first anniversary of the prior year’s annual meeting to not less than 90 days nor more than 120 days prior to the first anniversary of the prior year’s annual meeting.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1530950/000153095023000026/0001530950-23-000026-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-01-15"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}