---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-377003"
form_type: "8-K"
ticker: "WLKP"
cik: "0001604665"
company_name: "Westlake Chemical Partners LP"
filed_at: "2026-08-31T21:03:02+00:00"
generated_at: "2026-08-31T21:04:14.516327+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Westlake Chemical Partners appoints Tommy Darby as VP & CAO; Holy moves to IR

## Summary
- Tommy E. Darby, 45, named VP & Chief Accounting Officer of WLKP's GP and Westlake Corp., effective Aug 31, 2026.
- Darby previously served as VP & CAO at Pactiv Evergreen (Novolex) from Aug 2022 to Apr 2025; earlier at Valaris.
- Jeffrey A. Holy transitions from VP & CAO to VP Finance & Investor Relations, effective concurrent with Darby's appointment.
- Darby is a CPA with B.S. in Accounting and M.S. in Auditing/Financial Accounting from University of North Texas.

## SEC filing metadata
- accession: 0001193125-26-377003
- form_type: 8-K
- ticker: WLKP
- cik: 0001604665
- company_name: Westlake Chemical Partners LP
- filed_at: 2026-08-31T21:03:02+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1604665/000119312526377003/0001193125-26-377003-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1604665/000119312526377003/d147867d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-377003
- JSON: https://secwatch.observer/filing/0001193125-26-377003.json
- Plain text: https://secwatch.observer/filing/0001193125-26-377003.txt

## Key facts
- Executive change
  Tommy E. Darby was appointed as Vice President, Chief Accounting Officer at Westlake Chemical Partners LP.
  - Action: appointed
  - Role: Vice President, Chief Accounting Officer
  source text: On August 31, 2026, Westlake Chemical Partners LP (the “Partnership”) announced that Tommy E. Darby, age 45, was appointed to the position of Vice President, Chief Accounting Officer of Westlake Chemical Partners GP LLC, the general partner of the Partnership (the “General Partner”), effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1604665/000119312526377003/0001193125-26-377003-index.htm
- Executive change
  Jeffrey A. Holy changed role as Vice President, Finance and Investor Relations at Westlake Chemical Partners LP.
  - Action: transition
  - Role: Vice President, Finance and Investor Relations
  source text: Mr. Darby will succeed Jeffrey A. Holy, who will transition from his current position of Vice President, Chief Accounting Officer of the General Partner to the position of Vice President, Finance and Investor Relations of the General Partner, effective concurrent with the appointment of Mr. Darby.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1604665/000119312526377003/0001193125-26-377003-index.htm

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