Union Pacific CFO Jennifer Hamann plans to retire in early 2027

Union Pacific said on October 16, 2026, that Jennifer L. Hamann plans to retire as executive vice president and chief financial officer, effective in early 2027.

Union Pacific said Hamann will continue to hold her current responsibilities until she retires. The company said it will announce additional details about the transition at a later date, including succession plans.

Hamann joined Union Pacific in 1992 on its audit staff and later held roles in finance, human resources, marketing and sales, investor relations and corporate audit. The company said she guided it through the COVID-19 pandemic and major operational transformation efforts. She has also served on the boards of TTX Company, Grupo Ferroviario Mexicano and Steel Dynamics.

Chief Executive Jim Vena said Hamann led with integrity for 35 years, guiding the company's finances, mentoring future leaders and representing Union Pacific across the industry.