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: 1916
Merrill Lynch & Co., Inc.
Medium Term Notes, Series B
Due Nine Months or More from Date of Issue
Callable Fixed Rate Notes
Principal Amount: $25,000,000
CUSIP Number: 59018S 4Q4
Interest Rate: 7.55000%
Original Issue Date: March 20, 2000
Stated Maturity Date: March 20, 2007
Interest Payment Dates: 20th day of each month commencing April 20,
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: March 20, 2001
Other Provisions: The Notes are subject to redemption at the
option of ML&Co., in whole, semi-annually on
each March 20 and September 20 commencing
March 20, 2001, 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: March 6, 2000
