UNP: Financial results

Item 2.02 Results of Operations and Financial Condition. On July 23, 2026, Union Pacific Corporation issued a press release announcing its financial results for the quarter ended June 30, 2026. A copy of the press release is furnished herewith as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. 99.1 Press Release of Union Pacific Corporation, dated July 23, 2026, announcing its financial results for the quarter ended June 3 0 , 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: July 23, 2026 UNION PACIFIC CORPORATION By: /s/ Jennifer L. Hamann Jennifer L. Hamann Executive Vice President and Chief Financial Officer