Union Pacific and Norfolk Southern’s proposed merger has reached a key early step in the regulatory process, with federal regulators now reviewing whether the companies’ application is complete. That decision will determine when the full review can begin.
What’s Related
Below is a timeline of how the deal has unfolded so far and what comes next.
July 28–29, 2025 — Merger agreement reached and announced
Union Pacific and Norfolk Southern executives struck a merger agreement valued at about $85 billion aimed at creating the first coast-to-coast freight rail operator. The combined network would span more than 50,000 miles across 43 states and connect roughly 100 ports.
November 2025 — Shareholders overwhelmingly approve the deal
Both UP’s and NS’s shareholders voted 99% in favor of the merger, clearing an important corporate hurdle and sending the transaction to federal regulators for review.
Dec. 19, 2025 — STB application filed
UP and NS formally submitted their major merger application to the Surface Transportation Board, kicking off the regulatory process under rules that require the deal to enhance competition and be in the public interest. The filing spans thousands of pages with detailed analyses from the companies.
Dec. 29, 2025 — Deadline for comments on completeness
The STB set a deadline for interested parties to weigh in only on whether the application contains all required information, not the merits of the merger itself.
Jan. 2, 2026 — UP and NS reply to completeness comments
After rival railroads and other stakeholders filed comments asserting that the application is incomplete, UP and NS submitted a reply defending their submission and arguing that many objections go to the merits rather than completeness.
Now (early Jan. 2026) — STB review of completeness
The STB is evaluating whether the application meets its requirements. This is a critical gate. If the STB rejects the filing as incomplete, UP and NS would have to refile or supplement the application, delaying the process and resetting procedural steps.
What’s next?
January 2026 (current)
The STB is expected to rule this month on whether the application can be accepted as filed.
If accepted as complete
The STB will issue a procedural schedule for merits comments, evidence, hearings, and reply periods. That process could extend through 2026.
Through 2026 to early 2027
The STB’s substantive review under statutory timelines will examine competition, service, safety, and public interest impacts. This phase typically involves detailed filings from multiple parties and may include public hearings.
Early 2027 (target)
UP and NS have said they hope to complete the merger by early 2027, though that timing depends on regulatory decisions and any legal or procedural delays.
January 28, 2028
The merger agreement is set to expire on this date, though it can be extended automatically if the STB’s review takes longer than expected.
