<PAGE>
PROSPECTUS DATED MARCH 6, 2000 PRICING SUPPLEMENT NO. 1 TO
PROSPECTUS SUPPLEMENT REGISTRATION STATEMENT NO. 333-30928
DATED MARCH 15, 2000 MARCH 15, 2000
RULE 424(b)(3)
DONALDSON, LUFKIN & JENRETTE, INC.
MEDIUM-TERM NOTES
DUE NINE MONTHS OR MORE FROM DATE OF ISSUE
THE MEDIUM-TERM NOTES, AS FURTHER DESCRIBED BELOW AND IN THE PROSPECTUS
SUPPLEMENT UNDER DESCRIPTION NOTES, WILL BEAR INTEREST FROM THE DATE OF ISSUANCE
UNTIL THE PRINCIPAL AMOUNT THEREOF IS PAID OR MADE AVAILABLE FOR PAYMENT AT THE
RATE SET FORTH BELOW.
<TABLE>
<S> <C> <C> <C>
Principal Amount: $ 60,000,000 Optional Conversion: N / A
Price To Public: 100.0000 % Optional Repayment Date: Non-Call / Life
Underwriting Discount: .2500 %
Proceeds To Issuer: 99.7500 % Business Day Jurisdiction: New York
Settlement Date March 16, 2000 Initial Redemption N / A
(Original Issue Date): Percentage:
Specified Currency: US Dollars Initial Redemption Date: N / A
Authorized $1,000 Annual Redemption N / A
Denomination: Percentage Reduction:
Maturity Date: March 15, 2002 Book Entry Note or B / E
Certificated Note:
Interest Rate: 3 month USD Libor + 37
basis points
First Coupon: $ 990,383.33
Interest Payment Dates: Quarterly, 15th day of Total Amount of OID: N / A
March, June, September
and December or as
modified
Interest Determination 2 business days prior to Day Count: Act/360
Date: the Interest Payment
Dates
CUSIP: 25766CCA0
First Interest Date: June 15, 2000
Paying Agent: The Chase Manhattan Bank
Settlement: DTC#: 443
</TABLE>
CAPITALIZED TERMS NOT DEFINED ABOVE HAVE THE MEANINGS GIVEN TO SUCH TERMS IN THE
ACCOMPANYING PROSPECTUS SUPPLEMENT.
DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION
