Tommy E. Darby was named Chief Accounting Officer of Westlake Chemical Partners LP. As of November 6, 2026, Westlake Chemical Partners LP has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from April 20, 2026 to August 31, 2026, naming 2 appointments (Form 8-K, August 31, 2026).
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Westlake Chemical Partners LP reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-04-20 to 2026-08-31. They name 2 people. Every row below is cited to the filing it comes from, and this page adds each new change as Westlake Chemical Partners LP files it.
Also on the record for Westlake Chemical Partners LP
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| February 17, 2026 | Stake report, Schedule 13G, by Energy Income Partners, LLC | 4.44% of the class | 5%+ stakes | Source |
| August 14, 2025 | Stake report, Schedule 13G, by Energy Income Partners, LLC | 5.04% of the class | 5%+ stakes | Source |
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Companies that share a holder
- Energy Income Partners, LLC also filed stake reports on 2 other companies: Clearway Energy, Inc. (Aug 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-08-31 | In | Chief Accounting Officer | 8-K, 2026-08-31 | ||
| 2026-04-20 | In | Chief Financial Officer | 2026-06-15 | 8-K, 2026-04-20 |
Who leads Westlake Chemical Partners LP, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Accounting Officer: Tommy E. Darby, appointed (filed 2026-08-31).
- Chief Financial Officer: Jonathan H. Baksht, appointed, effective 2026-06-15 (filed 2026-04-20).
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Appointed: Tommy E. Darby, Chief Accounting Officer
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.
- In connection with his appointment as Vice President, Chief Accounting Officer of the General Partner, Mr. Darby was also appointed as Vice President, Chief Accounting Officer of Westlake Corporation, the indirect parent company of the General Partner, effective August 31, 2026.
- Prior to joining the General Partner, from August 2022 to April 2025, Mr. Darby served as Vice President and Chief Accounting Officer of Pactiv Evergreen Inc. (now Novolex) and, earlier in his tenure there, as Vice President and Controller.
- From March 2008 to May 2020, Mr. Darby held various leadership roles at Valaris plc (now Valaris Limited) and its predecessor companies in external reporting, financial systems and internal audit, before serving as Vice President and Controller and later as Vice President, Finance.
- Earlier in his career, Mr. Darby worked in audit and assurance at Deloitte LLP.
- Mr. Darby received a Bachelor of Science degree in Accounting and a Master of Science degree in Auditing and Financial Accounting from the University of North Texas and is a Certified Public Accountant.
- 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.
Appointed: Jonathan H. Baksht, Chief Financial Officer, effective 2026-06-15
On April 20, 2026, Westlake Chemical Partners LP (the "Partnership") announced that Jonathan H. Baksht, age 51, was appointed as Senior Vice President and Chief Financial Officer and as a director of Westlake Chemical Partners GP LLC, the general partner of the Partnership (the "General Partner"), effective June 15, 2026.
- Mr. Baksht will succeed Mr. M. Steven Bender, who, as previously disclosed, will retire by the end of the year and, effective June 15, 2026, will retire from the Board of Directors of the General Partner and transition from his position as Executive Vice President and Chief Financial Officer of the General Partner to the position of Special Advisor to the President of the General Partner.
- In connection with his appointment as Senior Vice President and Chief Financial Officer and director of the General Partner, Mr. Baksht was also appointed as Senior Vice President and Chief Financial Officer of Westlake Corporation, the indirect parent company of the General Partner, effective June 15, 2026.
- Prior to joining the General Partner, Mr. Baksht served as Executive Vice President and Chief Financial Officer of Fortune Brands Innovations, Inc. from May 2025 to March 2026.
- From May 2022 to May 2025, Mr. Baksht served as Chief Financial Officer of Pactiv Evergreen Inc. and from August 2013 to September 2021, Mr. Baksht held various positions at Valaris Limited, including most recently as Chief Financial Officer from November 2015 until September 2021.
- Earlier in his career, he worked in investment banking at Goldman, Sachs & Co. and in management consulting at Andersen Consulting.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.