PROSPECTUS SUPPLEMENT File No. 333-68747
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(To Prospectus and Prospectus Supplement dated May 6, 1999) Rule 424(b)(3)
Prospectus number: 1902
Merrill Lynch & Co., Inc.
Medium Term Notes, Series B
Due Nine Months or More from Date of Issue
Fixed Rate Notes
Principal Amount: $17,700,000
CUSIP Number: 59018S 4A9
Interest Rate: 0.003%
[To accommodate Trustee, interest rate for set up
purposes at .003% the rate should be immediately
edited to .0031%]
Original Issue Date: February 29, 2000
Stated Maturity Date: June 30, 2008
Interest Payment Dates: Each June 30th and December 30th, commencing on
June 30, 2000, 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: February 22, 2000
