Private company
Who owns Pioneer Transmission, LLC
One company in the researched set discloses a stake in Pioneer Transmission, LLC, none of it sized by anyone who discloses it. Pioneer Transmission, 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.
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.
- American Electric Power Company, Inc.. Ownership percentage is from the AEPTHCo Joint Ventures summary table in the FY2025 10-K's MD&A (in-service since 2018; net PP&E of $177 million at 31 December 2025, an unallocated project-level figure, not AEP's carrying value). No separate carrying value is disclosed for AEP's stake; see the combined $4,402 million Deferred Charges balance caveat on the Prairie Wind row, which applies equally here. This is the same Pioneer Transmission, LLC in which Duke Energy Corporation held the other 50% interest before selling it in November 2024 (per Duke Energy's FY2025 10-K); AEP's 50% stake is unaffected and continues to be reported at that level in AEP's own FY2025 10-K. 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 Pioneer Transmission, LLC where a holder stated one, and are missing where no holder did.