X0201 4 2004-01-22 0000062709 MARSH & MCLENNAN COMPANIES INC MMC 0001191065 CABIALLAVETTA MATHIS IN DER BETHALDEN 10 CH-8003 RUESCHILIKON SWITZERLAND V8 1 1 0 0 VICE CHAIRMAN COMMON 2003-12-31 5 J 0 31.9786 A 246.0954 I STOCK INVESTMENT PLAN (401K) BONUS DEFERRAL PLAN RS UNITS 2004-01-22 4 A 0 3514.022 48.23 A COMMON 3514.022 3514.022 D SISP RESTRICTED STOCK UNITS 2003-12-31 5 J 0 122.4666 A COMMON 122.4666 5500.274 D Reflects additional shares acquired by the Stock Investment Plan (SIP) Custodian at prevailing market prices. Information reported herein is based on reporting person's Plan Statement as of December 31, 2003. Includes supplemental award of 458.351 units acquired pursuant to the Cash Bonus Award Voluntary Deferral Plan. Reflects additional shares acquired by the Stock Investment Supplemental Plan (SISP) Custodian at prevailing market prices. Information reported herein is based on reporting person's Plan Statement as of December 31, 2003. The security converts to common stock on a one-for-one basis. Not Applicable. WILLIAM J. WHITE, Attorney-in-fact 2004-01-26