---
schema_version: "secwatch.filing_event.v1"
accession: "0001552000-23-000034"
form_type: "8-K"
ticker: "MPLX"
cik: "0001552000"
company_name: "MPLX LP"
filed_at: "2023-10-30T23:59:59+00:00"
generated_at: "2026-06-09T05:55:46.337925+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# MPLX GC Suzanne Gagle to retire; Molly R. Benson named Chief Legal Officer

## Summary
- Suzanne Gagle, General Counsel, will retire effective January 5, 2024 after over 30 years.
- Molly R. Benson appointed as Chief Legal Officer and Corporate Secretary effective Jan 1, 2024.
- Benson was previously VP, Chief Securities, Governance & Compliance Officer and Corporate Secretary.

## SEC filing metadata
- accession: 0001552000-23-000034
- form_type: 8-K
- ticker: MPLX
- cik: 0001552000
- company_name: MPLX LP
- filed_at: 2023-10-30T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1552000/000155200023000034/0001552000-23-000034-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1552000/000155200023000034/mplx-20231029.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001552000-23-000034
- JSON: https://secwatch.observer/filing/0001552000-23-000034.json
- Plain text: https://secwatch.observer/filing/0001552000-23-000034.txt

## Key facts
- Executive change
  Suzanne Gagle departed as General Counsel at MPLX LP.
  - Action: retire
  - Role: General Counsel
  source text: Suzanne Gagle, General Counsel of MPLX GP LLC (the “Company”) the general partner of MPLX LP, notified the Company of her intention to retire from the Company, following over 30 years of service with the Company and its affiliates, to be effective January 5, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1552000/000155200023000034/0001552000-23-000034-index.htm
- Executive change
  Molly R. Benson was appointed as Chief Legal Officer and Corporate Secretary at MPLX LP.
  - Action: appointed
  - Role: Chief Legal Officer and Corporate Secretary
  source text: Molly R. Benson, who currently serves as the Company’s Vice President, Chief Securities, Governance & Compliance Officer and Corporate Secretary, has been appointed as Ms. Gagle’s successor to serve as Chief Legal Officer and Corporate Secretary of the Company effective January 1, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1552000/000155200023000034/0001552000-23-000034-index.htm

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