PROSPECTUS SUPPLEMENT File No. 333-52822 (To Prospectus Supplement and Prospectus dated January 24, 2001) Rule 424(b)(3) Prospectus number: 2190 Merrill Lynch & Co., Inc. Medium-Term Notes, Series B Due Nine Months or More from Date of Issue Floating Rate Notes Principal Amount: $470,000,000 Original Issue Date: Jan. 15, 2002 CUSIP Number: 59018YLJ8 Stated Maturity Date: Jan 14, 2004 Interest Calculation: Day Count Convention: -------------------- -------------------- [X] Regular Floating Rate Note [X] Actual/360 [ ] Inverse Floating Rate Note [ ] 30/360 (Fixed Interest Rate): [ ] Actual/Actual Interest Rate Basis: ------------------- [X] LIBOR [ ] Commercial Paper Rate [ ] CMT Rate [ ] Eleventh District Cost of Funds Rate [ ] Prime Rate [ ] CD Rate [ ] Federal Funds Rate [ ] Other (see attached) [ ] Treasury Rate Designated CMT Page: Designated LIBOR Page: CMT Telerate Page: LIBOR Telerate Page: 3750 CMT Reuters Page: LIBOR Reuters Page: Index Maturity: Three Month Minimum Interest Rate: Not Applicable Spread: 0.180% Maximum Interest Rate: Not Applicable Initial Interest Rate: TBD Spread Multiplier: Not Applicable Interest Reset Dates: Quarterly, on the 14th of January, April, July and October, commencing on April 14, 2002, subject to modified following business day convention. Interest Payment Dates: Quarterly, on the 14th of January, April, July and October, commencing on April 14, 2002, subject to modified following business day convention. Repayment at the Option of the Holder: The Notes cannot be repaid prior to the Stated Maturity Date. Redemption at the Option of the Company: The Notes cannot be redeemed prior to the Stated Maturity Date. Form: The Notes are being issued in fully registered book-entry form. Trustee: The Chase Manhattan Bank Dated: Jan. 10, 2002