<COVER> SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 21, 1999 Union Pacific Corporation (Exact Name of Registrant as Specified in its Charter) Utah 1-6075 13-2626465 (State or Other (Commission (I.R.S. Employer Jurisdiction of File Number) Identification No.) Incorporation) 1717 Main Street, Suite 5900, Dallas, Texas 75201 (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code: (214) 743-5600 N/A Former Name or Former Address, if Changed Since Last Report 1 Item 5. Other Events. Attached as an Exhibit is the Press Release issued by Union Pacific Corporation on January 21, 1999 announcing Union Pacific Corporation's financial results for the fourth quarter of 1998, which is incorporated herein by reference. Item 7. Financial Statements and Exhibits. (c) Exhibits. 99 Press Release dated January 21, 1999 announcing Union Pacific Corporation's financial results for the fourth quarter of 1998. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, Union Pacific Corporation has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: January 21, 1999 UNION PACIFIC CORPORATION By: /s/ John J. Koraleski --------------------- John J. Koraleski Controller and Chief Accounting Officer INDEX EXHIBIT INDEX Exhibit Description 99 Press Release dated January 21, 1999 announcing Union Pacific Corporation's financial results for the fourth quarter of 1998.