UNITED STATES 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): September 4, 2003 (September 3, 2003) UnionBancorp, Inc. ------------------------------------------------------ (Exact name of registrant as specified in its charter) Delaware 0-28846 36-3145350 State or other jurisdiction (Commission (IRS Employer of Incorporation File Number) Identification No.) 122 West Madison Street, Ottawa, IL 61350 --------------------------------------------------- (Address of principal executive offices) (Zip Code) (815) 433-7030 -------------- (Registrant's telephone number, including area code) Item 5. Other Events. On September 3, 2003, UnionBancorp, Inc. issued a news release to report the resignation of the Company's President and Chief Executive Officer. The release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. Item 7. Financial Statements and Exhibits. (a) Exhibits. -------- Exhibit Number -------------- 99.1 Press Release, dated September 3, 2003 issued by UnionBancorp, Inc. -2- 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. UNIONBANCORP, INC. Dated: September 3, 2003 /s/ DEWEY R. YAEGER ------------------------------------------ Dewey R. Yaeger Interim President and Chief Executive Officer Dated: September 3, 2003 /s/ KURT R. STEVENSON ----------------------------------------- Kurt R. Stevenson Vice President and Chief Financial Officer -3- EXHIBIT INDEX Exhibit Number -------------- 99.1 Press Release, dated September 3, 2003 issued by UnionBancorp, Inc. -4-