01—Abstract
Summary
Summary of the 8-K filed September 29, 2026. Cited figures are marked; the original filing is the authoritative source.
Plains All American Pipeline, L.P.
(PAA) and Plains GP Holdings, L.P. (PAGP) announced on September 29, 2026 the appointment of Dean Liollio as Executive Vice President and Chief Operating Officer, effective October 2, 2026. He succeeds Chris Chandler, who provided notice on September 25, 2026 that he will resign effective October 2, 2026, to pursue other interests and not due to any disagreement with the company's operations, policies or practices.
Mr. Liollio, age 67, has served as Senior Vice President, Special Projects, of Plains since June 2024. His prior roles include President of Plains Midstream Canada (2020 to 2024), President of PAA Natural Gas Storage (2008 to 2020) and President of Plains Gas Solutions (2016 to 2020). Under his new role, he will receive an annual base salary of $625,000,a an annual bonus target of 150% of base salary, and a time-based promotional LTIP grant of 150,000 phantom units vesting in August 2029.
The filing also furnishes a press release under Item 7.01, in which Chairman, CEO and President Willie Chiang said Mr. Liollio has been a member of the executive committee and instrumental in executing recent initiatives. The filing states there is no family relationship between Mr. Liollio and any Plains executive officer or director.
02—Key points
Key Highlights
- Dean Liollio appointed EVP and COO of Plains All American GP LLC and PAA GP Holdings LLC, effective October 2, 2026.
- Chris Chandler, the prior EVP and COO, resigned effective October 2, 2026, to pursue other interests; the filing states this was not due to any disagreement with company operations, policies or practices.
- Mr. Liollio, age 67, was Senior Vice President, Special Projects, from June 2024 until his new appointment.
- Annual base salary for the new COO role is $625,000, with an annual bonus target of 150% of base salary.
- Promotional LTIP grant of 150,000 time-based phantom units, vesting in August 2029.
- Mr. Liollio holds a Bachelor of Science in Industrial Engineering from Texas A&M University and previously served as President of EnergySouth, Inc. and at CenterPoint's natural gas distribution operations.
- A press release dated September 29, 2026 announcing the appointment is furnished as Exhibit 99.1 under Item 7.01 and is not deemed filed for Section 18 purposes.
03—Questions
Frequently Asked Questions
Why is Chris Chandler leaving the COO role?
Mr. Chandler provided notice on September 25, 2026 that he will resign effective October 2, 2026, to pursue other interests. The filing states the resignation is not due to any disagreement relating to the company's operations, policies or practices.
What is Dean Liollio's background?
Mr. Liollio, age 67, served as Senior Vice President, Special Projects, from June 2024. He previously led Plains Midstream Canada (2020 to 2024), PAA Natural Gas Storage (2008 to 2020) and Plains Gas Solutions (2016 to 2020). Before joining Plains in 2008, he held executive roles at EnergySouth, Inc. and CenterPoint's natural gas distribution operations.
What is the compensation package for the new COO?
The filing states an annual base salary of $625,000, an annual bonus target of 150% of base salary, and a time-based promotional LTIP grant of 150,000 phantom units vesting in August 2029. The filing refers investors to the annual proxy statement for information on the executive compensation program.
Are there any family relationships or arrangements tied to the appointment?
The filing states there is no family relationship between Mr. Liollio and any executive officer or director of Plains, and no understandings or arrangements with any other person under which he was appointed.
04—Continue