Westlake Chemical Partners Appoints Chief Accounting Officer

What Happened
Westlake Chemical Partners LP (filed via its general partner) announced on August 31, 2026 that Tommy E. Darby, age 45, was appointed Vice President, Chief Accounting Officer of Westlake Chemical Partners GP LLC and, concurrently, Vice President, Chief Accounting Officer of Westlake Corporation, effective August 31, 2026. Mr. Darby succeeds Jeffrey A. Holy, who will transition to Vice President, Finance and Investor Relations of the General Partner effective at the same time.

Key Details

• Appointment effective date: August 31, 2026.
• Appointee: Tommy E. Darby, 45, former VP & Chief Accounting Officer of Pactiv Evergreen Inc. (Aug 2022–Apr 2025); earlier roles at Valaris (Mar 2008–May 2020) and audit experience at Deloitte.
• Education & credential: B.S. in Accounting and M.S. in Auditing and Financial Accounting from the University of North Texas; Certified Public Accountant (CPA).
• Governance notes: No family relationships with company officers, no reportable related-party transactions under Item 404(a) of Regulation S-K, and no special arrangements tied to the appointment.

Why It Matters
This is a senior accounting leadership change that affects who oversees the Partnership’s accounting and financial reporting. Darby’s prior CAO/controller experience and CPA credential indicate continuity in accounting expertise, and Jeffrey Holy’s move to finance and investor relations suggests internal continuity in investor communications. The filing discloses no related-party issues, which is relevant to governance and investor oversight.