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Get filing alertsPlains All American appoints Dean Liollio as EVP & COO, replacing Chris Chandler
Filed September 29, 2026 · Period ending September 25, 2026 · ~1 min read
Key Changes
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Dean Liollio appointed EVP & COO of Plains All American GP LLC and PAA GP Holdings LLC, effective October 2, 2026.
Item 5.02 verify on EDGAR → -
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Chris Chandler resigns as EVP & COO effective October 2, 2026, to pursue other interests; company states no disagreement on operations, policies, or practices.
Item 5.02 verify on EDGAR → -
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Liollio's compensation: $625,000 base salary, 150% annual bonus target, and 150,000 phantom units vesting August 2029.
Item 5.02 verify on EDGAR → -
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Liollio, 67, has been with Plains since 2008, most recently as SVP Special Projects; previously President of Plains Midstream Canada and PAA Natural Gas Storage.
Item 5.02 verify on EDGAR →
Summary
Plains All American Pipeline announced a planned leadership transition in its executive suite. Dean Liollio, a long-time Plains executive, will become Executive Vice President and Chief Operating Officer effective October 2, 2026. He replaces Chris Chandler, who is resigning from the company on the same date to pursue other interests.
The company stated that Chandler's departure is not due to any disagreement regarding operations, policies, or practices. Liollio brings deep operational experience to the role, having served in several president-level positions across Plains' midstream, natural gas storage, and gas solutions businesses since joining in 2008.
His compensation package includes a base salary of $625,000, a target bonus of 150% of base salary, and a promotional long-term incentive grant of 150,000 phantom units vesting in August 2029. For investors, the transition appears orderly and low-risk. The incoming COO is an internal candidate with extensive company knowledge, and the outgoing COO's departure is characterized as amicable. The filing does not indicate any operational or strategic changes accompanying the leadership change.
Section-by-Section Diff
Event · Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation
Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation filed; see Key Changes for terms.
Added in current filing · verify on EDGAR →
announced the appointment, effective October 2, 2026, of Dean Liollio as Executive Vice President and Chief Operating Officer (“EVP and COO”) of Plains All American GP LLC, the general partner of PAA, and PAA GP Holdings LLC, the general partner of PAGP.
Dean Liollio is appointed EVP and COO of both general partners, effective October 2, 2026. He succeeds Chris Chandler, who is resigning from the company effective the same date.
Show 1 minor / wording change
Added in current filing · verify on EDGAR →
Mr. Liollio, age 67, served as Senior Vice President, Special Projects, of Plains from June 2024 until his appointment as EVP and COO in October 2026. He 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.
Liollio is an internal candidate with extensive Plains experience, having served in multiple president-level roles across the company's midstream, natural gas storage, and gas solutions businesses since joining in 2008.
Event · Exhibit 99.1
Added in current filing · view on EDGAR →
Dean Liollio has been appointed to serve as Executive Vice President and Chief Operating Officer of Plains effective as of October 2, 2026.
Dean Liollio, age 67, is promoted from Senior Vice President, Special Projects to EVP and COO. He has held several senior roles at Plains since 2008, including President of Plains Midstream Canada and President of PAA Natural Gas Storage.
Added in current filing · view on EDGAR →
Mr. Liollio replaces Chris Chandler, the current EVP and COO, who is resigning from Plains to pursue other interests and not due to any disagreement relating to the company’s operations, policies or practices.
Chris Chandler is leaving the COO role to pursue other interests. The company explicitly states the resignation is not due to any disagreement about operations, policies, or practices, which reduces the likelihood of a contentious departure.
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Figures/quotes linked to EDGAR · Narrative written by AI · Sep 30, 2026 · How we verify