X0101 4 2003-06-26 0 0000275694 MASSMUTUAL CORPORATE INVESTORS MCI 0001194966 OCONNELL ROBERT J 0 0 0 1 Affiliated Person of Adviser MassMutual Non-Qualified Thrift Plan 0.00 2003-06-26 4 A 0 31.47 22.00 A 1988-08-08 1988-08-08 Capital Stock 31.47 18879.08 D Exercisable only upon termination or retirement, however, holdings may be liquidated and invested into other investment options at each month. The derivative has no actual securities underlying the agreement, which is entirely notional. By: Norman B. Flebotte, Attorney-in-Fact for 2003-06-27