Rule: 424(b)(3) File No: 333-36444 PRICING SUPPLEMENT NO. 4 DATED FEBRUARY 15, 2001 (To Prospectus Supplement dated June 2, 2000 and Prospectus dated May 30, 2000) FLEET BOSTON COPORATION SENIOR MEDIUM-TERM NOTES, SERIES R (The "Senior Notes") AND SUBORDINATED MEDIUM-TERM NOTES, SERIES S (The "Subordinated Notes") DUE 9 MONTHS OR MORE FROM DATE OF ISSUE FLOATING RATE NOTE Series R (Senior) [x] Series S (Subordinated) [ ] Principal Amount: $30,000,000.00 CUSIP Number: 33900QAZ7 Price to Public: 100.00% Original Issue Discount (OID) Note: [ ] Yes [x] No ---------------------------------- Total Amount of OID: Issue Date: February 20, 2001 Yield to Maturity: Maturity Date: February 20, 2004 Initial Accrual Period OID: Price to Issuer (as % principal): 99.9450% Net Proceeds to Issuer: $29,983,500.00 Specified Currency (if other than U.S. Dollars): Interest Rate Basis: [ ] CMT Rate [ ] Treasury Rate Designated CMT Telerate Page: [ ] Federal Funds Rate Designated CMT Maturity Index: [ ] Prime Rate [ ] Commercial Paper Rate [ ] Other: [x] LIBOR LIBOR SCREEN Telerate (p 3750)[x] Reuters [ ] Other [ ] Index Maturity: 3 Month Spread: plus 28 basis points Spread Multiplier: Maximum Interest Rate: Minimum Interest Rate: Initial Interest Rate: 5.69250% Method of Calculation: Actual / 360 [x] Actual/Actual [ ] 30/360 [ ] Interest Determination Dates: [ ] One Business Day Prior to the Interest Reset Date (No Rate Cutoff) [ ] Two Business Days Prior to the Interest Reset Date [x] Two London Business Days Prior to the Interest Reset Date Initial Interest Reset Date: May 21, 2001 Interest Reset Dates: Quarterly on each Interest Payment Date Interest Payment Dates: Quarterly on the 20th of February, May, August, November and subject to modified following business day convention. Regular Record Dates (if other than the 15th day prior to each Interest Payment Date): Interest Reset Period: Quarterly Interest Payment Period: Quarterly Calculation Agent (if other than Bank of New York): Redemption: [x] The Notes cannot be redeemed prior to maturity [ ] The Notes can be redeemed prior to maturity Initial Redemption Date: Initial Redemption Percentage: Annual Redemption Percentage Reduction: Repayment: [x] The Notes cannot be repaid prior to maturity [ ] The Notes can be repaid prior to maturity, at the option of the holder of the Note Holder's Optional Repayment Date(s): Index Currency: Place of Payment: Authorized Denomination: (only if non-U.S. Dollar denominated) Agent: Banc of America Securities LLC Agent's Capacity: [x] As Principal [ ] As Agent Delivery: DTC # 5235 Additional Terms: