STB keeps UP-NS merger review alive, but a board member faults the filing

The Surface Transportation Board has unanimously turned down three requests to dismiss Union Pacific’s bid for Norfolk Southern at the threshold, so the UP-NS merger review moves to the merits.

The Board announced the ruling on Sept. 18. The motions were filed on Aug. 6 by BNSF Railway, CSX Transportation and five shipper groups, which argued that the revised application did not make a prima facie case. The five groups are the American Chemistry Council, American Fuel & Petrochemical Manufacturers, the Alliance for Chemical Distribution, the National Industrial Transportation League and The Fertilizer Institute.

In Decision No. 37, the Board stressed that it has formed no view on whether the deal should be approved and that keeping the case open is no endorsement of the railroads’ analyses. Opponents can raise the same objections again in comments due Nov. 18, 2026.

What the prima facie test asks

Under the Major Merger Rules adopted in 2001, applicants can fail the prima facie test in two ways. The facts they disclose may be unable to support a public-interest finding even when read in their most favorable light. Or those facts may show outright that the deal would harm the public interest. The Board said several objections raise significant factual questions. This is also the first case judged under those rules, so a fuller record should inform its eventual ruling. The Board relied on a 1989 Interstate Commerce Commission precedent on its discretion to let such a case go forward.

The motions focused on competition. Opponents argued that the merger could cause vertical foreclosure and remove geographic competition. They said the applicants treated some interline traffic categorically rather than with deal-specific evidence. They also attacked Committed Gateway Pricing, the railroads’ main pro-competition offer. In their view, it touches less than 1% of traffic, expires when the oversight period ends and could raise some shippers’ rates.

The shipper groups added two objections. The railroads had not shown which benefits only the merger could deliver, and the claims program in their Service Assurance Plan leaves out most potential traffic. CSX and Canadian Pacific Kansas City said the application does not assess how further Class I mergers could reshape the industry. The National Grain and Feed Association, rail unions and the attorneys general of seven states also questioned the prima facie case.

In their Aug. 26 reply, Union Pacific and Norfolk Southern described the motions as a coordinated attempt to argue the merits early. They maintained that the merger would strengthen rail competition, that Committed Gateway Pricing supports that goal, that their vertical foreclosure analysis is specific to this transaction, and that the benefits require combining the two systems.

Board Member Kloster flags gaps in the filing

Board Member Kloster joined the unanimous decision but added a separate concurring statement. Kloster wrote that the movants faced a very high bar, since the Board had to read the railroads’ evidence as generously as possible. Yet they raised significant and compelling points that the railroads will need to answer in detail.

“I believe that there has been a lack of transparency and depth in the application,” Kloster wrote. The statement says the railroads have filed thousands of pages without a robust plan to address competitive concerns or mitigate harm, and lean heavily on intermodal benefits in a segment that is already competitive.

Kloster also saw an apparent strategy of releasing concessions gradually, which opponents describe as holding back more meaningful conditions while testing stakeholder reaction, and urged the railroads to put their best case in the application. Stressing that no merits decision has been made, Kloster concluded that the applicants “still have a long way to go to show that the Transaction is in the public interest.”

How the revised UP-NS application reached this stage

The STB rejected the first application, filed on Dec. 19, 2025, as incomplete on Jan. 16, 2026, according to its merger resources page. The railroads refiled on April 30, 2026. The Board accepted the revised application on May 28 but held the case in abeyance pending supplements, which the railroads filed on July 7 and July 27. On Aug. 18 it restarted the review and set a schedule, leaving the dismissal motions for a separate ruling.

Deadlines through 2027

Comments, protests and requests for conditions are due Nov. 18, 2026, and responses to them by Feb. 16, 2027, under the schedule the STB adopted on Aug. 18. The Board plans a public hearing before final briefs but has not yet set its date.

In a customer notice, Union Pacific lists final briefs for May 28, 2027, and a final STB decision within 90 days after the record closes, a date the Board has not yet fixed.