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STB Greenlights UP-NS Merger Review Process, Avoiding Historic Second Rejection

The Surface Transportation Board has cleared the path for Union Pacific and Norfolk Southern to move forward with their proposed transcontinental merger, sidestepping what would have marked an unprecedented second rejection of a major rail combination. The decision came after market turbulence that erased approximately $7.5 billion in combined shareholder value, representing nearly 10% of the estimated $85 billion deal valuation. Rather than issuing a formal rejection, the STB requested additional information across multiple operational issues, with a July 27 submission deadline established before formal evaluation begins. The regulatory outcome avoids potential political complications, as President Trump has expressed support for the merger. UP CEO Jim Vena must balance transparency requirements with protecting proprietary business strategy from competitor railroads while navigating uncharted regulatory territory under the STB's modernized merger standards.