{"schema_version":"secwatch.filing_event.v1","accession":"0001591587-23-000040","form_type":"8-K","ticker":null,"cik":"0001591587","company_name":"AssetMark Financial Holdings, Inc.","filed_at":"2023-09-08T23:59:59+00:00","discovered_at":"2026-05-14T18:03:34.466711+00:00","generated_at":"2026-06-10T22:11:08.334145+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"AssetMark appoints Michael Kim as CEO; Natalie Wolfsen departs","bullets":["Michael Kim appointed CEO effective September 8, 2023; also joins the Board.","Natalie Wolfsen resigned as CEO and director to pursue another opportunity.","Kim previously served as President and Chief Client Officer, 13 years at AssetMark.","Board appointment unanimous; described as part of an established succession plan.","Kim steps into role after record quarter with platform assets at an all-time high."],"urls":{"canonical":"https://secwatch.observer/filing/0001591587-23-000040","json":"https://secwatch.observer/filing/0001591587-23-000040.json","markdown":"https://secwatch.observer/filing/0001591587-23-000040.md","text":"https://secwatch.observer/filing/0001591587-23-000040.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1591587/000159158723000040/0001591587-23-000040-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1591587/000159158723000040/amk-20230905.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T22:11:08.334145+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":"0ab9476417","claim":"Michael Kim was appointed as Chief Executive Officer at AssetMark Financial Holdings, Inc..","evidence_excerpt":"the Board of Directors of AssetMark (the “Board”) appointed Michael Kim as AssetMark’s next Chief Executive Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1591587/000159158723000040/0001591587-23-000040-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"},{"claim_id":"4362db1962","claim":"Natalie Wolfsen resigned as Chief Executive Officer at AssetMark Financial Holdings, Inc..","evidence_excerpt":"Natalie Wolfsen gave notice of her resignation as Chief Executive Officer and director of AssetMark Financial Holdings, Inc.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1591587/000159158723000040/0001591587-23-000040-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}