EXHIBIT 4.1 AMENDMENT NO. 1 TO RIGHTS AGREEMENT This Amendment No. 1 to Rights Agreement (this "Amendment"), effective as of June 30, 2006 is between UnionBancorp, Inc., a Delaware corporation (the "Company"), and Computershare Investor Services, LLC,...Rights Agreement • July 7th, 2006 • Unionbancorp Inc • National commercial banks • Delaware
