---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-178844"
form_type: "8-K"
ticker: "WLKP"
cik: "0001604665"
company_name: "Westlake Chemical Partners LP"
filed_at: "2024-07-15T23:59:59+00:00"
generated_at: "2026-05-31T20:42:27.225432+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Westlake Chemical Partners appoints Jean-Marc Gilson CEO; Chao family transitions to chairman roles

## Summary
- James Chao becomes Senior Chairman; Albert Chao becomes Executive Chairman of the General Partner.
- Jean-Marc Gilson appointed President, CEO, and Director of Westlake Chemical Partners GP LLC, effective July 15, 2024.
- Gilson also appointed President and CEO of Westlake Corporation (NYSE: WLK), the indirect parent.
- Gilson previously served as President and CEO of Mitsubishi Chemical Group Corporation from April 2021 to April 2024.
- Leadership change is part of a planned succession process with no sudden departures.

## SEC filing metadata
- accession: 0001193125-24-178844
- form_type: 8-K
- ticker: WLKP
- cik: 0001604665
- company_name: Westlake Chemical Partners LP
- filed_at: 2024-07-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1604665/000119312524178844/0001193125-24-178844-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1604665/000119312524178844/d851112d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-178844
- JSON: https://secwatch.observer/filing/0001193125-24-178844.json
- Plain text: https://secwatch.observer/filing/0001193125-24-178844.txt

## Key facts
- Executive change
  Albert Chao changed role as Executive Chairman of the Board of the General Partner at Westlake Chemical Partners LP.
  - Action: transitioned
  - Role: Executive Chairman of the Board of the General Partner
  source text: Albert Chao, formerly the President, Chief Executive Officer and Director of the General Partner, transitioned to the position of Executive Chairman of the Board of the General Partner;
  evidence_url: https://www.sec.gov/Archives/edgar/data/1604665/000119312524178844/0001193125-24-178844-index.htm
- Executive change
  Jean-Marc Gilson was appointed as President, Chief Executive Officer and Director of the General Partner at Westlake Chemical Partners LP.
  - Action: appointed
  - Role: President, Chief Executive Officer and Director of the General Partner
  source text: Jean-Marc Gilson was appointed as the President, Chief Executive Officer and Director of the General Partner.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1604665/000119312524178844/0001193125-24-178844-index.htm

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