Union Pacific → Norfolk Southern
Union Pacific's agreed $85bn purchase of Norfolk Southern would join a western and an eastern railroad into the first single-line freight network from coast to coast, and is the first major rail merger judged under rules that require a combination to enhance competition rather than merely preserve it.
Would create the first single-line transcontinental US freight railway; a Surface Transportation Board decision is not expected until 2027.
- Value
- $85B
- Announced
- July 2025
- Completed
- Pending
- Sector
- Transport
- Deal type
- merger
- Acquirer
- Union Pacific (United States)
- Target
- Norfolk Southern (United States)
Why it mattered
US freight rail has shrunk from more than 30 major railroads in the early 1980s to six, and four — Union Pacific, Norfolk Southern, CSX and BNSF — carry nearly 90% of rail freight. The system is split between West and East, so traffic crossing the middle of the country changes hands between carriers. Union Pacific's pitch was single-line service across 50,000 route miles, 43 states and about 100 ports, winning freight from trucks and generating about $2.75bn of annual synergies.
The terms, agreed on 28 July 2025, give Norfolk Southern shareholders one Union Pacific share plus $88.82 in cash for each share: $320 at the unaffected price, a 25% premium to the 30-day average, an enterprise value of $85bn and 27% of the combined company. Union Pacific will pay about $20bn in cash, funded with new debt and operating cash. It chose not to use a voting trust, so the deal cannot close before approval, and agreed a $2.5bn reverse termination fee if the Surface Transportation Board (STB) blocks the deal or imposes unacceptable conditions. Past mergers give the regulator reason for care: Union Pacific's 1996 purchase of Southern Pacific caused a traffic backlog around Houston, and Norfolk Southern's share of Conrail brought service failures in 1999.
What it left behind
Shareholders of both companies approved the merger on 14 November 2025, but the review was slow to begin. The STB rejected the December 2025 application as incomplete on 16 January 2026, accepted a revised version on 28 May while holding the case in abeyance for more information, and adopted a procedural schedule only on 18 August. On 18 September it refused motions from BNSF, CSX and shipper associations to dismiss the application outright, calling it a "transaction of first impression". As of 29 September 2026, opposing comments are due on 18 November and final briefs on 28 May 2027; Union Pacific expects completion in 2027, and the agreement runs to 28 January 2028 with extensions. The lesson for acquirers in regulated networks is that the timetable is part of the price: without a voting trust, and with a $2.5bn fee at stake, the buyer carries years of exposure before owning anything, while rivals use the review to argue the case against it.