Press release 📈 Stocks 🌍 United States

Plains All American Appoints Dean Liollio as New COO Effective October 2

Plains All American Pipeline and Plains GP Holdings announce a leadership transition as Dean Liollio takes over as COO, replacing Chris Chandler in a move unrelated to company operations.

📅 September 29, 2026 🕐 1 min read

2 assets impacted. Net bias: 0 Bullish, 0 Bearish, 2 Neutral. Strongest signal: PAA → 2/10 (65% confidence).

📊 Affected Assets (2)

PAA

Neutral 🤖 65%

📅 Short-term 🌍 US · Explicit

Appointment of new COO is a routine management change with no expected impact on operations.

PAGP

Neutral 🤖 65%

📅 Short-term 🌍 US · Explicit

Appointment of new COO at the general partner is a routine management change with no expected impact on operations.

🎯 Key Takeaways

Dean Liollio assumes the role of EVP and COO at Plains effective October 2, 2026.
Outgoing COO Chris Chandler is resigning to pursue other interests, with no reported disagreements regarding company policy.

📝 Executive Summary

Plains All American Pipeline and Plains GP Holdings have named Dean Liollio as the new Executive Vice President and Chief Operating Officer, effective October 2, 2026. Liollio succeeds outgoing COO Chris Chandler, who is stepping down to pursue other interests.

❓ FAQ

Why is Chris Chandler leaving his position as COO of Plains?

Chris Chandler is resigning to pursue other interests, and the company confirmed his departure is not due to any disagreement regarding operations, policies, or practices.

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