By Adriano Marchese

Canadian National Railway is pressing U.S. federal regulators to demand more information from Union Pacific and Norfolk Southern as they seek approval for their proposed merger.

The Canadian railroad said Monday it has filed a motion with the Surface Transportation Board to compel additional information regarding the proposed merger agreement between the two companies.

The company's motion said the railroads haven't been fully transparent and have left out important information about how the deal could harm competition, calling it one of several shortcomings in their application.

"The information the applicants refuse to disclose is critical to understand their perspective on anticipated competitive harms and inform the board's public-interest and competition analyses," said CN Rail's Chief Legal Officer Olivier Chouc.

In July, the two companies proposed a $71.5 billion merger to form a single company controlling coast-to-coast rail shipments. In mid-December, Union Pacific and Norfolk Southern filed an application with the Surface Transportation Board requesting approval of their proposed merger.

Regulators have been skeptical of deals that could create a transcontinental rail juggernaut, concerned that such massive mergers could lead to price increases, service disruptions and lower investment in safety improvements.

Write to Adriano Marchese at adriano.marchese@wsj.com

(END) Dow Jones Newswires

January 12, 2026 10:06 ET (15:06 GMT)

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