PRICING SUPPLEMENT NO. 1 DATED SEPTEMBER 17, 2002 FILED UNDER RULE 424(b)(3) (TO PROSPECTUS DATED SEPTEMBER 13, 2002 FILE NO.333-90316 AND PROSPECTUS SUPPLEMENT DATED SEPTEMBER 13, 2002) SLM CORPORATION Medium Term Notes, Series A Due 9 Months or Longer From the Date of Issue --------------------------------------------- ----------------------------------------- -------------------------------------- Principal Amount: $350,000,000 Floating Rate Notes: |_| Fixed Rate Notes: |X| --------------------------------------------- ----------------------------------------- -------------------------------------- Original Issue Date Closing Date: September 20, 2002 CUSIP Number: 90390M AP5 of these Notes: April 10, 2002 --------------------------------------------- ---------------------------- ------------ -------------------------------------- Option to Extend |X| No Specified Currency: U.S. Dollars Maturity Date: April 10, 2007 Maturity: |_| Yes If Yes, Final Maturity Date: --------------------------------------------- ---------------------------- ------------ -------------------------------------- ------------------------------------------------ -------------- ----------------------------------- -------------------------- Redeemable at the option of the Company: |X| No Redemption Price: Not Applicable. ------------------------------------------------ -------------- ----------------------------------- -------------------------- |_| Yes Redemption Dates: Not Applicable. ------------------------------------------------ -------------- ----------------------------------- -------------------------- Repayment at the option of the Holder: : |X| No Repayment Price: Not Applicable. ------------------------------------------------ -------------- ----------------------------------- -------------------------- |_| Yes Repayment Dates: Not Applicable. ------------------------------------------------ -------------- ----------------------------------- -------------------------- ------------------------------------------------------------------------------------------------------------------------------ APPLICABLE TO FIXED RATE NOTES ONLY: -------------------------------------------------------- --------------------------------------------------------------------- Interest Rate: 5.625% Interest Payment Dates: Each April 10th and October 10th during the term of the Notes, beginning October 10, 2002, subject to following business day convention. -------------------------------------------------------- --------------------------------------------------------------------- Interest Accrual Method: 30/360 Interest Periods: From and including the Original Issue Date, or the previous April 10th or October 10th, as the case may be, to and including the next succeeding October 9th or April 9th, as the case may be, with no adjustment to period end dates for accrual purposes. -------------------------------------------------------- --------------------------------------------------------------------- The Medium Term Notes, Series A that we are offering by this pricing supplement are a further issuance of, are fungible with and are consolidated to form a single series with our 5.625% Fixed Rate Medium Term Notes, Series A due April 10, 2007 issued on April 10, 2002. The 5.625% Fixed Rate Medium Term Notes, Series A being offered by this pricing supplement will have the same CUSIP number and will trade interchangeably with the previously issued 5.625% Fixed Rate Medium Term Notes, Series A due April 10, 2007 immediately upon settlement. Currently, $850,000,000 aggregate principal amount of those notes are outstanding. This issuance will increase the aggregate principal amount of the outstanding 5.625% Fixed Rate Medium Term Notes, Series A due April 10, 2007 to $1,200,000,000. --------------------- Joint Book-Running Managers BANC OF AMERICA SECURITIES LLC CREDIT SUISSE FIRST BOSTON ---------------------- Co-Managers ABN AMRO INCORPORATED BANC ONE CAPITAL MARKETS, INC. BARCLAYS CAPITAL INC. JPMORGAN MERRILL LYNCH & CO. SALOMON SMITH BARNEY ----------------------- September 17, 2002 Form: Book-entry. Denominations: $1,000 minimum and integral multiples of $1,000 in excess thereof. CUSIP: 90390M AP5 ISIN: US90390M AP59 Listing: None. Trustee: JPMorgan Chase Bank, formerly known as The Chase Manhattan Bank. Agents: The following agents are acting as underwriters in connection with this issuance: Agents Principal Amount of Notes ------ ------------------------- Banc of America Securities LLC $140,002,000 Credit Suisse First Boston Corporation 140,002,000 ABN AMRO Incorporated 11,666,000 Banc One Capital Markets, Inc. 11,666,000 Barclays Capital Inc. 11,666,000 J.P. Morgan Securities Inc. 11,666,000 Merrill Lynch, Pierce, Fenner & Smith Incorporated 11,666,000 Salomon Smith Barney Inc. 11,666,000 ------------ Total $350,000,000 Issue Price: 110.609% (which includes accrued interest). Agents' Commission: 0.350%. Net Proceeds: $385,906,500. Concession: 0.200%. Reallowance: 0.150%. OBLIGATIONS OF SLM CORPORATION AND ANY SUBSIDIARY OF SLM CORPORATION ARE NOT GUARANTEED BY THE FULL FAITH AND CREDIT OF THE UNITED STATES OF AMERICA. NEITHER SLM CORPORATION NOR ANY SUBSIDIARY OF SLM CORPORATION (OTHER THAN STUDENT LOAN MARKETING ASSOCIATION) IS A GOVERNMENT-SPONSORED ENTERPRISE OR AN INSTRUMENTALITY OF THE UNITED STATES OF AMERICA.