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STB Pauses Review of Union Pacific-Norfolk Southern Deal

The board said the revised filing still lacks key details on competition and public benefits, and it ordered an Environmental Impact Statement under federal law.

  • On Thursday, the Surface Transportation Board accepted Union Pacific and Norfolk Southern's updated merger application, mandating an Environmental Impact Statement and requiring additional information by July 27.
  • Previously, the agency rejected the merger proposal filed on Dec. 19, 2025, citing incomplete information; regulators now warn the revised filing still lacks necessary detail on competitive impacts and public benefits.
  • The $72 billion merger would reshape the American rail network across 43 states, concentrating control over approximately 40% of U.S. freight rail traffic in a single railroad.
  • Shares fell sharply following the delay, with Union Pacific down 5.2% and Norfolk Southern sliding 6.5%, as competitors like CNCN warn the deal threatens to stifle rail competition.
  • Railroad officials committed to working "constructively" with the STB to address information gaps, promising the transcontinental network will save shipping costs and create 1,200 new union jobs.
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Railfan & Railroad Magazine broke the news on Thursday, May 28, 2026.
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