Private company
Who owns Blackbird Maintenance 407 General Partnership
One company in the researched set discloses a stake in Blackbird Maintenance 407 General Partnership, none of it sized by anyone who discloses it. Blackbird Maintenance 407 General Partnership 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.
Blackbird Maintenance 407 General Partnership - Profile
- Type
- joint venture
- Based in
- Canada
- Founded
- 2015
Blackbird Maintenance 407 is the operations and maintenance arm of the Highway 407 East Phase 2 project in Ontario, the partnership that keeps the road in contracted condition for the 30 year term that began when the extension was completed. Its remit covers the roughly 22 kilometre stretch of Highway 407 running east from Harmony Road in Oshawa to Highway 35/115 in Clarington together with the Highway 418 connector, and takes in routine maintenance, winter operations, lifecycle repair and renewal, paid through monthly service payments from the province rather than toll revenue. The partners behind it are the same two sponsors that hold the project company, Cintra Infraestructuras Internacional of Ferrovial and the Canadian business of CRH, formerly Holcim (Canada) Inc.
Source
Blackbird Maintenance 407 General Partnership 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 Contract Awarded for Final Phase of Highway 407 East Project (Infrastructure Ontario), Ontario Highway 407 project page (CRH) and CRH plc Form 10-K for 2025, Exhibit 21.1 Principal Subsidiary Undertakings (SEC). 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.
- CRH plc. Canada. Products/services: Construction. Not consolidated: accounted for under the equity method. CRH's FY2025 10-K reports a single combined 'Equity method investments' balance of $737 million as of 31 Dec 2025 ($620 million at 31 Dec 2024, $649 million at 31 Dec 2023, per the Adjusted ROIC reconciliation in Item 7 MD&A) covering ALL of the entities in this exhibit table together. The filing does not disclose a per-investee carrying value, so value_usd is null here per the combined-balance rule; the combined figure is recorded in notes and unknowns, not assigned to this row. 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 Blackbird Maintenance 407 General Partnership where a holder stated one, and are missing where no holder did.