PROSPECTUS SUPPLEMENT File No. 333-38792
---------------------- Rule 424(b)(3)
(To Prospectus Supplement and Prospectus dated June 16, 2000
and June 15, 2000, respectively)
Prospectus number: 1985
Merrill Lynch & Co., Inc.
Medium-Term Notes, Series B
Due Nine Months or More from Date of Issue
Floating Rate Notes
Principal Amount: $25,000,000 Original Issue Date: June 23, 2000
CUSIP Number: 59018S 7M0 Stated Maturity Date: June 23, 2003
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:
--------------------
/ / LIBOR / / Commercial Paper Rate
/ / CMT Rate / / Eleventh District Cost of Funds Rate
/ / Prime Rate / / CD Rate
/x/ Federal Funds Rate / / Other (see attached)
/ / Treasury Rate
Designated CMT Page: Designated LIBOR Page:
CMT Telerate Page: LIBOR Telerate Page:
CMT Reuters Page: LIBOR Reuters Page:
Index Maturity: N/A Minimum Interest Rate: Not Applicable
Spread: 0.440% Maximum Interest Rate: Not Applicable
Initial Interest Rate: TBD Spread Multiplier: Not Applicable
Interest Reset Dates: Daily, commencing September 23, 2000 through the
maturity date; subject to following business day
convention
Interest Payment Dates: Quarterly, on the 23rd of every March, June, September,
and December commencing September 23, 2000, subject to
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: June 20, 2000
