Plains GP Holdings LP Appoints New EVP & COO

What Happened

• Plains GP Holdings LP (PAGP) and its affiliate Plains All American Pipeline, L.P. (PAA) announced that Dean Liollio will be appointed Executive Vice President and Chief Operating Officer of the general partners effective October 2, 2026. Chris Chandler gave notice on September 25, 2026 and will resign effective October 2, 2026; his resignation is to pursue other interests and not the result of any disagreement with the company.
• Mr. Liollio, age 67, has been with Plains in senior roles (Senior VP, Special Projects since June 2024; prior President roles at Plains Midstream Canada, PAA Natural Gas Storage, and Plains Gas Solutions) and previously held executive positions at EnergySouth and CenterPoint.

Key Details

• Effective date: October 2, 2026 (Chandler resignation and Liollio appointment).
• Compensation: Liollio’s base salary $625,000; annual bonus target 150% of base salary; one-time time‑based LTIP grant of 150,000 phantom units vesting August 2029.
• Notice: Chandler provided notice on September 25, 2026 and is leaving to pursue other interests (no disagreement with the company reported).
• Disclosure: The company issued a press release dated September 29, 2026 announcing the change.

Why It Matters

• Leadership change in the company’s top operations role can affect operational continuity and execution; this is an internal promotion from an experienced Plains executive, which suggests continuity rather than a disruptive external hire.
• Compensation details show material financial incentives (high bonus target and long‑term phantom units) that align the new COO’s pay with company performance and retention through 2029.
• Investors should note the effective date and may watch subsequent company communications and results for any impacts on operations or guidance stemming from the transition.