Energy Transition & Power Demand
Plains Appoints Dean Liollio as Executive Vice President and Chief Operating Officer
Plains All American Pipeline and Plains GP Holdings announced that Dean Liollio has been appointed Executive Vice President and Chief Operating Officer of Plains, effective October 2, 2026. Liollio, age 67, replaces Chris Chandler, the current EVP and COO, who is resigning to pursue other interests and not due to any disagreement relating to the company's operations, policies or practices. Liollio has served as Senior Vice President, Special Projects, of Plains since June 2024, and previously served as President of Plains Midstream Canada from 2020 until 2024, as President of PAA Natural Gas Storage from 2008 until 2020 and as President of Plains Gas Solutions from 2016 until 2020. Chairman, CEO and President Willie Chiang said Liollio is immensely qualified for the role, citing his membership on the executive committee and his role in executing on recent initiatives, and thanked Chandler for his contributions. PAA is a publicly traded master limited partnership that owns and operates midstream energy infrastructure and provides logistics services for crude oil, while PAGP owns an indirect, non-economic controlling general partner interest in PAA and an indirect limited partner interest in PAA.
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Energy Transition & Power Demand › Natural Gas Value Chain Talent
PAA · · Neutral COO succession announced; no operational or financial change stated, so no clear directional driver.
PAGP · · Neutral PAGP's general partner interest in PAA is affected only by the same neutral COO appointment.
Plains Midstream Canada · · Neutral Mentioned only as Liollio's former role; no impact on the unit itself.