Private company
Who owns Gray Oak Pipeline, LLC
One company in the researched set discloses a stake in Gray Oak Pipeline, LLC, worth $268m between them. Gray Oak Pipeline, LLC is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Gray Oak Pipeline, LLC - Profile
- Type
- joint venture
- Based in
- United States
- Founded
- 2018
Gray Oak Pipeline, LLC owns a long haul crude oil pipeline system in Texas that moves barrels from the Permian and Eagle Ford basins in West Texas to the Gulf Coast at Corpus Christi and Ingleside, with a further connection toward the Houston area. It entered full service in the second quarter of 2020 with a nameplate capacity of about 900,000 barrels a day and completed the first 80,000 barrel a day phase of a two phase expansion in early 2025, taking it to roughly 980,000 barrels a day. Its main role is supplying refineries and export docks on the Texas coast, and it feeds Enbridge's Ingleside Energy Center, one of the largest crude export terminals in North America. Enbridge became operator of the system in 2023 following a 2022 realignment of interests with Phillips 66.
Source
Gray Oak Pipeline, LLC files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from Enbridge news release: increased ownership in Gray Oak Pipeline, Phillips 66 Form 10-K for 2020 and RBN Energy: Gray Oak Phase 1 expansion complete. The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- Marathon Petroleum Corporation, as of 31 Dec 2025. Listed by MPC as 'MPC-Retained', i.e. held directly by MPC rather than through MPLX. source
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Gray Oak Pipeline, LLC where a holder stated one, and are missing where no holder did.