Private company
Who owns Mountain Valley Pipeline, LLC - Series A (MVP Mainline)
One company in the researched set discloses a stake in Mountain Valley Pipeline, LLC - Series A (MVP Mainline), worth $3.29bn between them. Mountain Valley Pipeline, LLC - Series A (MVP Mainline) 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.
Mountain Valley Pipeline, LLC - Series A (MVP Mainline) - Profile
- Type
- joint venture
- Based in
- United States
Series A of Mountain Valley Pipeline, LLC is the series of a Delaware series limited liability company that owns the MVP Mainline, a 303 mile, 42 inch diameter interstate natural gas pipeline running from Wetzel County, West Virginia to Pittsylvania County, Virginia with total capacity of 2.0 billion cubic feet a day and three interconnects to other interstate pipelines. It moves Appalachian Basin gas to southeastern markets, is regulated by the Federal Energy Regulatory Commission and is operated by EQT. The line entered service on 14 June 2024 and its firm transmission and storage capacity is fully subscribed under long term contracts with a weighted average remaining term of about 19 years. Alongside EQT's midstream joint venture, the members of the series are affiliates of NextEra Energy, AltaGas and RGC Resources, with Con Edison Gas Pipeline and Storage exiting under a 2026 sale.
Source
Mountain Valley Pipeline, LLC - Series A (MVP Mainline) 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 EQT Corporation Form 10-K for 2025, Mountain Valley Pipeline project site and Mountain Valley Gas Pipeline, Global Energy Monitor. 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.
- EQT Corporation, as of 30 Jun 2026. 53.2% ownership interest as of 30 Jun 2026, up from 49.3% at 31 Dec 2025. The increase came from the MVP A and MVP C Interest Acquisitions, completed 30 Mar 2026: EQT bought an additional approximately 3.94% interest in MVP A from an affiliate of Con Edison Gas Pipeline and Storage, LLC (ConEd) under a preferential buy-out right in the MVP LLC Agreement, for $198.3 million, of which $98.4 million was funded by a Blackstone Credit affiliate (the 10-Q's 'BXCI Affiliate'). Carrying value $3,289,264 thousand as of 30 Jun 2026 versus $3,097,754 thousand at 31 Dec 2025. Series A (MVP A) owns the Mountain Valley Pipeline (MVP Mainline), an in-service, FERC-regulated interstate natural gas pipeline (about 2.0 Bcf/day from Wetzel County, WV to Pittsylvania County, VA). Other MVP A members as of 30 Jun 2026 are affiliates of NextEra Energy, Inc., AltaGas Ltd., RGC Resources, Inc. and VED NPI IV, LLC (Vega); ConEd exited MVP A entirely via the buy-out. pct_of_target recorded as 53.2, a percentage, not 0.532, per the file convention for joint-venture interests. 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 Mountain Valley Pipeline, LLC - Series A (MVP Mainline) where a holder stated one, and are missing where no holder did.