{"schema_version":"secwatch.filing_event.v1","accession":"0000825313-23-000030","form_type":"8-K","ticker":"AB","cik":"0000825313","company_name":"ALLIANCEBERNSTEIN HOLDING L.P.","filed_at":"2023-06-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:42.367113+00:00","generated_at":"2026-06-14T10:02:01.539099+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"AllianceBernstein CFO/COO Kate Burke resigns; Siemers interim CFO, Sprules COO","bullets":["Kate Burke resigned as COO and CFO effective May 31, 2023, to become president of a large privately-owned asset management firm.","William R. Siemers, Controller and CAO, appointed Interim CFO; he also served as interim CFO in 2022.","Karl Sprules, Head of Global Technology & Operations, appointed COO; he has been with AB since 1998."],"urls":{"canonical":"https://secwatch.observer/filing/0000825313-23-000030","json":"https://secwatch.observer/filing/0000825313-23-000030.json","markdown":"https://secwatch.observer/filing/0000825313-23-000030.md","text":"https://secwatch.observer/filing/0000825313-23-000030.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/ab-20230601.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-14T10:02:01.539099+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":"28061fd5f0","claim":"Kate Burke resigned as Chief Financial Officer at ALLIANCEBERNSTEIN HOLDING L.P..","evidence_excerpt":"On May 31, 2023, Kate Burke notified AllianceBernstein Holding L.P. (“AB”) of her resignation from her positions as Chief Operating Officer and Chief Financial Officer, effective May 31, 2023, to become the president of a large privately-owned asset management firm.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"315138b4da","claim":"William R. Siemers was appointed as Interim Chief Financial Officer at ALLIANCEBERNSTEIN HOLDING L.P..","evidence_excerpt":"AB appointed William R. Siemers, AB's Controller and Chief Accounting Officer, as Interim Chief Financial Officer, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Interim Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"35b655110e","claim":"Karl Sprules was appointed as Chief Operating Officer at ALLIANCEBERNSTEIN HOLDING L.P..","evidence_excerpt":"AB appointed Karl Sprules, AB's Head of Global Technology & Operations, as Chief Operating Officer, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Operating Officer"}],"fact_type":"executive_change"},{"claim_id":"5388ffcad0","claim":"Kate Burke resigned as Chief Operating Officer at ALLIANCEBERNSTEIN HOLDING L.P..","evidence_excerpt":"On May 31, 2023, Kate Burke notified AllianceBernstein Holding L.P. (“AB”) of her resignation from her positions as Chief Operating Officer and Chief Financial Officer, effective May 31, 2023, to become the president of a large privately-owned asset management firm.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Operating Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}