Private company
Who owns Laurel Mountain Midstream, LLC
2 companies in the researched set disclose a stake in Laurel Mountain Midstream, LLC, worth $206m between them. Laurel Mountain Midstream, 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.
Laurel Mountain Midstream, LLC - Profile
- Type
- joint venture
- Based in
- United States
- Founded
- 2009
Laurel Mountain Midstream, LLC gathers natural gas in western Pennsylvania. Its system runs to about 1,151 miles of gathering pipeline with the capacity to move roughly 0.9 billion cubic feet a day, moving raw gas from Marcellus Shale wellheads to processing plants and interstate lines. The system works under a long term dedicated gathering agreement with its anchor producer in which the fee moves with natural gas prices but is protected by a floor. The venture was created in April 2009 as an asset swap valued at about 250 million dollars: Atlas Pipeline Partners contributed its northern Appalachian gathering and processing infrastructure in southwestern Pennsylvania, and The Williams Companies contributed cash and a note and took over day to day operation of the system, which it still runs.
Source
Laurel Mountain Midstream, 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 The Williams Companies, Inc. Form 10-K for 2025 (sec.gov), Atlas Pipeline Partners forms Marcellus Shale pipeline joint venture with Williams Companies (Jones Day) and EQT announces the acquisition of Chevron's Appalachia assets (EQT Corporation). 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.
- The Williams Companies, Inc., as of 31 Dec 2025. Equity-method LLC interest, not denominated in shares, so shares is null. FY2025 10-K Note 8 equity-method investments table: 'Laurel Mountain Midstream, LLC 69% $159 $171' (2025 and 2024 carrying value in millions). Listed separately from the 'Appalachia Midstream Investments' line in the same table. source
- EQT Corporation, as of 30 Jun 2026. 31.0% ownership interest, unchanged across all periods checked (31 Dec 2023 through 30 Jun 2026). Carrying value $46,932 thousand as of 30 Jun 2026 versus $47,037 thousand at 31 Dec 2025. Laurel Mountain Midstream, LLC is a midstream company formed as a joint venture among EQT, The Williams Companies, Inc. and certain other energy companies for gathering and processing assets. pct_of_target recorded as 31, a percentage, not 0.31. 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 Laurel Mountain Midstream, LLC where a holder stated one, and are missing where no holder did.