Private company
Who owns Gulf Coast Express Pipeline LLC (GCX)
One company in the researched set discloses a stake in Gulf Coast Express Pipeline LLC (GCX), worth $630m between them. Gulf Coast Express Pipeline LLC (GCX) 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.
Gulf Coast Express Pipeline LLC (GCX) - Profile
- Type
- joint venture
- Based in
- United States
- Founded
- 2019
Gulf Coast Express Pipeline LLC owns a roughly 500 mile natural gas transmission line in Texas that carries associated gas out of the Permian Basin to the Gulf Coast market. Built for about 1.75 billion dollars and placed in service in September 2019, the system runs in 36 and 42 inch pipe from Coyanosa in the Permian, with a lateral to Midland, southeast to the Agua Dulce hub near Corpus Christi, where it connects to south Texas industrial demand, Mexican export routes and liquefied natural gas terminals. Capacity was originally about 1.98 billion cubic feet a day, fully committed under long term binding shipper contracts, and a 455 million dollar compression expansion adding about 570 million cubic feet a day entered service in 2026, taking throughput to roughly 2.55 billion cubic feet a day. The line is operated by Kinder Morgan Texas Pipeline.
Source
Gulf Coast Express Pipeline LLC (GCX) 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 Gulf Coast Express Pipeline (Global Energy Monitor), Gulf Coast Express Pipeline Project company overview (Kinder Morgan) and Kinder Morgan Greenlights Permian GCX Expansion Amid Stubbornly Weak Waha Natural Gas Prices (Natural Gas Intelligence). 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.
- Kinder Morgan, Inc., as of 31 Dec 2025. Equity-method joint venture interest, not a share count. FY2025 10-K states 34% ownership and a $630 million carrying value at 31 Dec 2025 ($566 million at 31 Dec 2024). KMI's Q2 2026 10-Q separately notes higher cash contributions to GCX during H1 2026 (part of a $73 million increase in contributions to equity investees) without resizing the position. sourcesource 2
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 Gulf Coast Express Pipeline LLC (GCX) where a holder stated one, and are missing where no holder did.