---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-111956"
form_type: "8-K"
ticker: "PAGP"
cik: "0001581990"
company_name: "PLAINS GP HOLDINGS LP"
filed_at: "2026-09-29T20:31:40+00:00"
generated_at: "2026-10-12T13:51:10.389367+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Plains names Dean Liollio EVP and COO effective Oct 2; Chris Chandler resigns to pursue other interests

## Summary
- Dean Liollio, 67, appointed Executive Vice President and Chief Operating Officer of Plains All American (PAA) and Plains GP Holdings (PAGP), effective October 2, 2026.
- Incumbent EVP/COO Chris Chandler gave notice September 25, 2026 and resigns effective October 2, 2026 to pursue other interests, not due to any disagreement over operations, policies or practices.
- Liollio's annual base salary will be $625,000, with a 150% bonus target and a time-based promotional LTIP grant of 150,000 phantom units vesting in August 2029.
- Liollio was SVP, Special Projects since June 2024; previously President of Plains Midstream Canada (2020-2024) and President of PAA Natural Gas Storage (2008-2020).
- CEO Willie Chiang said Liollio has been on the executive committee and was instrumental in executing recent initiatives; thanked Chandler for his contributions.

## SEC filing metadata
- accession: 0001104659-26-111956
- form_type: 8-K
- ticker: PAGP
- cik: 0001581990
- company_name: PLAINS GP HOLDINGS LP
- filed_at: 2026-09-29T20:31:40+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1581990/000110465926111956/0001104659-26-111956-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1581990/000110465926111956/tm2626534d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-111956
- JSON: https://secwatch.observer/filing/0001104659-26-111956.json
- Plain text: https://secwatch.observer/filing/0001104659-26-111956.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.