Exhibit 4 AMENDMENT NO. 2 TO RIGHTS AGREEMENT AMENDMENT, dated as of December 7, 2000, to the Rights Agreement, dated as of March 7, 1986 (the "Rights Agreement"), between Unisys Corporation, a Delaware corporation (then named Burroughs Corporation)...Rights Agreement • December 21st, 2000 • Unisys Corp • Computer & office equipment • Delaware
