---
schema_version: "secwatch.filing_event.v1"
accession: "0000825313-23-000049"
form_type: "8-K"
ticker: "AB"
cik: "0000825313"
company_name: "ALLIANCEBERNSTEIN HOLDING L.P."
filed_at: "2023-08-21T23:59:59+00:00"
generated_at: "2026-06-11T06:39:25.535618+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# AllianceBernstein appoints Thomas Simeone as Controller and Chief Accounting Officer

## Summary
- Thomas Simeone, 45, appointed Controller and Chief Accounting Officer effective Aug 21, 2023.
- Simeone joined AB in 2004 and served as Senior VP and Assistant Controller since 2018.
- He succeeds William Siemers, who remains Interim CFO of AB.

## SEC filing metadata
- accession: 0000825313-23-000049
- form_type: 8-K
- ticker: AB
- cik: 0000825313
- company_name: ALLIANCEBERNSTEIN HOLDING L.P.
- filed_at: 2023-08-21T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/825313/000082531323000049/0000825313-23-000049-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/825313/000082531323000049/ab-20230821.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000825313-23-000049
- JSON: https://secwatch.observer/filing/0000825313-23-000049.json
- Plain text: https://secwatch.observer/filing/0000825313-23-000049.txt

## Key facts
- Executive change
  Thomas Simeone was appointed as Controller and Chief Accounting Officer at ALLIANCEBERNSTEIN HOLDING L.P..
  - Action: appointed
  - Role: Controller and Chief Accounting Officer
  source text: On August 21, 2023, Thomas Simeone, age, 45, who joined AllianceBernstein Corporation (the “Corporation”), general partner of AllianceBernstein L.P. (“ABLP”) and AllianceBernstein Holding L.P. (together with ABLP and the Corporation, “AB”), in 2004, and has been Senior Vice President and Assistant Controller of AB since 2018, was appointed Controller and Chief Accounting Officer of AB.
  evidence_url: https://www.sec.gov/Archives/edgar/data/825313/000082531323000049/0000825313-23-000049-index.htm

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