{"schema_version":"secwatch.filing_event.v1","accession":"0001517302-23-000097","form_type":"8-K","ticker":"APAM","cik":"0001517302","company_name":"Artisan Partners Asset Management Inc.","filed_at":"2023-11-30T23:59:59+00:00","discovered_at":"2026-05-14T18:03:29.340173+00:00","generated_at":"2026-06-07T19:50:46.649054+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Co-founder Andrew A. Ziegler retires from Artisan Partners board effective Nov 27, 2023","bullets":["Andrew A. Ziegler retired from the board on November 27, 2023; no disagreement cited.","Ziegler co-founded Artisan Partners in 1994; company expressed gratitude for his service.","No replacement announced; board size reduced by one."],"urls":{"canonical":"https://secwatch.observer/filing/0001517302-23-000097","json":"https://secwatch.observer/filing/0001517302-23-000097.json","markdown":"https://secwatch.observer/filing/0001517302-23-000097.md","text":"https://secwatch.observer/filing/0001517302-23-000097.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1517302/000151730223000097/0001517302-23-000097-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1517302/000151730223000097/apam-20231127.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T19:50:46.649054+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":"ce02f1931b","claim":"Andrew A. Ziegler retired as director at Artisan Partners Asset Management Inc..","evidence_excerpt":"On November 27, 2023, Andrew A. Ziegler notified Artisan Partners Asset Management Inc. (the “Company”) of his decision to retire from the board of directors of the Company, effective November 27, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1517302/000151730223000097/0001517302-23-000097-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"label":"Role","value":"director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}