Is Mplx LP an American company?
Yes — Mplx LP is an American company.
Mplx LP is incorporated in Delaware, United States and headquartered in Findlay, Ohio. Its legal-entity record reports no foreign parent — the company is independently American-owned.
The evidence
- Legal name
- MPLX LP
- Incorporated in
- Delaware, United States
- Registered office
- WILMINGTON, the United States
- Headquarters
- Findlay, Ohio, United States
- Ultimate owner
- None reported (independent)
- Stock listing
- NYSE: MPLX on NYSE
- LEI
- 5493000CZJ19CK4P3G36
Source: GLEIF, the global Legal Entity Identifier registry · checked Jul 26, 2026. A US headquarters or stock listing does not always mean US incorporation — this page reports what the legal-entity registry actually records.
Mplx LP: origin questions
Is Mplx LP an American company?
Yes — Mplx LP is an American company. Mplx LP is incorporated in Delaware, United States and headquartered in Findlay, Ohio. Its legal-entity record reports no foreign parent — the company is independently American-owned.
Where is Mplx LP incorporated?
Mplx LP is legally incorporated in Delaware, United States, according to its GLEIF legal-entity record.
Who owns Mplx LP?
Mplx LP reports no parent company in its legal-entity record — it is independently owned rather than a subsidiary.
Is Mplx LP traded on a US stock exchange?
Yes — Mplx LP trades under the ticker MPLX on the NYSE.
See the full Mplx LP company profile — financials, stock data and trust credentials — or browse the directory of American companies.