EXHIBIT 10 AMENDMENT No. 2 TO RIGHTS AGREEMENT AMENDMENT No. 2 TO RIGHTS AGREEMENT, dated as of August 2, 2002, (this "Amendment"), to the Rights Agreement, dated as of January 5, 2000 (the "Rights Agreement"), by and between Unocal Corporation (the...Rights Agreement • August 2nd, 2002 • Unocal Corp • Crude petroleum & natural gas • New York
