美国银行美股招股说明书(2025-10-06版)

supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these Notes in any country or jurisdictionwhere such an offer would not be permitted. Linked to the Least Performing of the Nasdaq-100®Technology Sector Index, the Russell 2000®Index and the S&P 500®Index The Auto-Callable Enhanced Return Notes Linked to the Least Performing of the Nasdaq-100®Technology Sector Index, the Russell 2000®Index and the S&PIndex, due November 1, 2029 (the “Notes”) are expected to price on October 28, 2025 and expected to issue on October 31, 2025. Approximate 4 year term if not called prior to maturity. Payment on the Notes will depend on the individual performance of the Nasdaq-100®Technology Sector Index, the Russell 2000®Index and the S&P 500®Index(each an “Underlying”). •Beginning with the October 28, 2026 Call Observation Date, automatically callable at an amount equal to the applicable Call Amount if, on the applicable CallObservation Date, the Observation Value of each Underlying is equal to or greater than its applicable Call Value. The Call Values are indicated on page PS-3, and theCall Observation Dates and Call Amounts are indicated on page PS-4. Assuming the Notes are not called prior to maturity, if the Ending Value of each Underlying is greater than or equal to 100% of its Starting Value, at maturity, you willreceive 150.00% upside exposure to increases in the value of the Least Performing Underlying from its Starting Value. •However, assuming the Notes are not called prior to maturity, ifanyUnderlying declines by more than 30% from its Starting Value, at maturity your investment will besubject to 1:1 downside exposure to decreases in the value of the Least Performing Underlying, with up to 100% of the principal at risk. Otherwise, if the Notes arenot called prior to maturity and the Ending Value of the Least Performing Underlying is less than 100.00% of its Starting Value but greater than or equal to 70% of itsStarting Value, at maturity you will receive the principal amount of your Notes.• Any payment on the Notes is subject to the credit risk of BofA Finance LLC (“BofA Finance” or the “Issuer”), as issuer of the Notes, and Bank of America Corporation(“BAC” or the “Guarantor”), as guarantor of the Notes. The initial estimated value of the Notes as of the pricing date is expected to be between $859.40 and $909.40 per $1,000.00 in principal amount ofNotes, which is less than the public offering price listed below.The actual value of your Notes at any time will reflect many factors and cannot be predictedwith accuracy. See “Risk Factors” beginning on page PS-9 of this pricing supplement and “Structuring the Notes” on page PS-26of this pricing supplement foradditional information.There are important differences between the Notes and a conventional debt security. Potential purchasers of the Notes should consider the information in “Risk Factors” beginning on page PS-9of this pricing supplement, page PS-5 of the accompanying product supplement, page S-6 ofthe accompanying prospectus supplement, and page 7 of the accompanying prospectus.None of the Securities and Exchange Commission (the “SEC”), any state securities commission, or any other regulatory body has approved or disapproved of these securities or determined if this pricing supplement and the accompanying product supplement, prospectus supplement and prospectus is truthful orcomplete. Any representation to the contrary is a criminal offense. (1)Certain dealers who purchase the Notes for sale to certain fee-based advisory accounts may forgo some or all of their selling concessions, fees orcommissions. The public offering price for investors purchasing the Notes in these fee-based advisory accounts may be as low as $967.50 per $1,000.00 inprincipal amount of Notes. The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $32.50, resulting in proceeds, before expenses, to BofA Finance ofas low as $967.50 per $1,000.00 in principal amount of Notes. Selling Agent Auto-Callable Enhanced Return Notes Linked to the Least Performing of the Nasdaq-100®Technology Sector Index, the Russell 2000®Indexand the S&P 500®Index Terms of the Notes Auto-Callable Enhanced Return Notes Linked to the Least Performing of the Nasdaq-100®Technology Sector Index, the Russell 2000®Indexand the S&P 500®Index Auto-Callable Enhanced Return Notes Linked to the Least Performing of the Nasdaq-100®Technology Sector Index, the Russell 2000®Indexand the S&P 500®Index * The Call Observation Dates are subject to postponement as set forth in “Description of the Notes—Certain Terms of the Notes—Events Relating to ObservationDates” beginning on page PS-23 of the accompanying product supplement, with references to “Observation Dates” being read as references to “Call ObservationDates.” ** See page PS-2 for the applicable Call Values of each Underlying. Any payments on the Notes depend on the c