UNP: Leadership change · Company disclosure

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On October 16, 2026, Union Pacific Corporation (the Company) announced that Jennifer L. Hamann plans to retire as Executive Vice President and Chief Financial Officer effective in early 2027. Until Ms. Hamann's retirement, she will continue to maintain her current responsibilities in her role as Executive Vice President and Chief Financial Officer. The Company will announce additional details about this transition in the future. Item 7.01 Regulation FD Disclosure. The Company issued a press release regarding the retirement of Ms. Hamann as Executive Vice President and Chief Financial Officer effective in early 2027, which is furnished as Exhibit 99.1. Item 9.01 Financial Statements and Exhibits (d) Exhibits. 99.1 Press Release of Union Pacific Corporation, dated October 1 6 , 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: October 16, 2026 UNION PACIFIC CORPORATION By: /s/ Christina B. Conlin Christina B. Conlin Executive Vice President, Chief Legal Officer, and Corporate Secretary