---
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"
generated_at: "2026-06-14T10:02:01.539099+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# AllianceBernstein CFO/COO Kate Burke resigns; Siemers interim CFO, Sprules COO

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 9.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000825313-23-000030
- JSON: https://secwatch.observer/filing/0000825313-23-000030.json
- Plain text: https://secwatch.observer/filing/0000825313-23-000030.txt

## Key facts
- Executive change
  Kate Burke resigned as Chief Financial Officer at ALLIANCEBERNSTEIN HOLDING L.P..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: 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_url: https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm
- Executive change
  William R. Siemers was appointed as Interim Chief Financial Officer at ALLIANCEBERNSTEIN HOLDING L.P..
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: AB appointed William R. Siemers, AB's Controller and Chief Accounting Officer, as Interim Chief Financial Officer, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm
- Executive change
  Karl Sprules was appointed as Chief Operating Officer at ALLIANCEBERNSTEIN HOLDING L.P..
  - Action: appointed
  - Role: Chief Operating Officer
  source text: AB appointed Karl Sprules, AB's Head of Global Technology & Operations, as Chief Operating Officer, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm
- Executive change
  Kate Burke resigned as Chief Operating Officer at ALLIANCEBERNSTEIN HOLDING L.P..
  - Action: resigned
  - Role: Chief Operating Officer
  source text: 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_url: https://www.sec.gov/Archives/edgar/data/825313/000082531323000030/0000825313-23-000030-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.