PROSPECTUS SUPPLEMENT File No. 333-68747
(To Prospectus and Prospectus Supplement dated May 6, 1999) Rule 424(b)(3)
Prospectus number: 1893
Merrill Lynch & Co., Inc.
Medium Term Notes, Series B
Due Nine Months or More from Date of Issue
Callable Fixed Rate Notes
Principal Amount: $15,000,000
CUSIP Number: 59018S 3S1
Interest Rate: 7.72000%
Original Issue Date: February 18, 2000
Stated Maturity Date: February 18, 2010
Interest Payment Dates: 18th day of each month commencing March 18,
2000, through and including the Stated
Maturity Date, subject to the 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 may be redeemed prior to the Stated
Maturity Date, See "Other Provisions"
Initial Redemption Date: February 18, 2003
Other Provisions: The Notes are subject to redemption at the
option of ML&Co., in whole, semi-annually on
each February 18 and August 18 commencing
February 18, 2003, at a redemption price equal
to 100% of the principal amount of the Notes
upon at least 30 days prior notice.
Form: The Notes are being issued in fully registered
book-entry form.
Trustee: The Chase Manhattan Bank
Dated: February 4, 2000
