Exhibit 4 AMENDMENT NO. 1 TO CREDIT AGREEMENT This AMENDMENT NO. 1 TO THE CREDIT AGREEMENT, dated as of March 19, 2004 (this "Amendment"), among DOBSON CELLULAR SYSTEMS, INC., an Oklahoma corporation (the "Borrower"), DOBSON COMMUNICATIONS...Credit Agreement • March 22nd, 2004 • Dobson Communications Corp • Radiotelephone communications • New York
Contract Type FiledMarch 22nd, 2004 Company Industry Jurisdiction