Private company
Who owns Grid Growth Ventures, LLC
One company in the researched set discloses a stake in Grid Growth Ventures, LLC, none of it sized by anyone who discloses it. Grid Growth Ventures, 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.. The Q2 FY2026 10-Q glossary states Grid Growth Ventures 'is 43.25% owned by AEP' directly. Formed in 2025 by Transource Energy and First Energy Transmission, LLC to bid into PJM's 2025 Regional Transmission Expansion Plan; in February 2026 PJM selected its proposed projects, estimated to cost approximately $1.2 billion, of which the 10-Q states 'AEP's share of this investment was estimated to be $600 million' (a future construction-funding estimate, not a current carrying value). No carrying value for this equity interest is disclosed. 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 Grid Growth Ventures, LLC where a holder stated one, and are missing where no holder did.