Private company
Who owns Northern Border Pipeline Company
One company in the researched set discloses a stake in Northern Border Pipeline Company, worth $444m between them. Northern Border Pipeline Company 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.
Northern Border Pipeline Company - Profile
- Type
- partnership
- Based in
- United States
- Founded
- 1982
Northern Border Pipeline Company is a general partnership that owns a 1,412 mile interstate natural gas pipeline running from the Montana and Saskatchewan border near Port of Morgan, Montana, across North Dakota, South Dakota, Minnesota and Iowa to a terminus near the Chicago area at Fort Hayden, Indiana. The 42 inch line entered service in 1982 and can move about 2.5 billion cubic feet of gas a day, connecting supply from the Western Canadian Sedimentary Basin and, increasingly, Bakken production in North Dakota to utilities, power generators and marketers in the Midwest. The partnership is split evenly between TC Energy, whose subsidiary operates the system day to day, and a holding company on the ONEOK side.
Source
Northern Border Pipeline Company 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 Northern Border Pipeline (TC Energy), Northern Border Gas Pipeline (Global Energy Monitor) and Northern Border Pipeline (Wikipedia). 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.
- ONEOK, Inc., as of 31 Dec 2025. Equity-method partnership interest, not denominated in shares, so shares is null. FY2025 10-K Note N investments table: 'Northern Border 50% $444 $333' (2025 and 2024 carrying value in millions). Q2 2026 10-Q Note H confirms the 50% owned joint venture and reports equity in net earnings of $29 million (Q2 2026) and $69 million (six months) but no restated Q2 2026 carrying value, so the FY2025 figure is used. 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 Northern Border Pipeline Company where a holder stated one, and are missing where no holder did.