美国银行美股招股说明书(2025-12-03版)

This pricing supplement, which is not complete and may be changed, relates to an effective Registration Statement under the Securities Act of 1933. This pricingsupplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these Notes in any country or jurisdiction Linked to the Least Performing of the Nasdaq-100® Index, the Russell 2000®Utilities Select Sector SPDR®Fund •The Contingent Income Issuer Callable Yield Notes Linked to the Least Performing of the Nasdaq-100® Sector SPDR®Fund, due December 21, 2028 (the “Notes”) are expected to price on December 16, 2025 and expected to issue on December 19, 2025.• Payments on the Notes will depend on the individual performance of the Nasdaq-100®Index, the Russell 2000®(each an “Underlying”). Contingent coupon rate of 10.15% per annum (0.8459% per month) payable monthly if the Observation Value ofeachUnderlying on the applicable ObservationDate is greater than or equal to 70.00% of its Starting Value, assuming the Notes have not been called. Beginning on March 19, 2026, callable monthly at our option for an amount equal to the principal amount plus the relevant Contingent Coupon Payment, ifotherwise payable. 1:1 downside exposure to decreases in the value of the Least Performing Underlying, with up to 100% of the principal at risk; otherwise, at maturity, you will receivethe principal amount. At maturity you will also receive a final Contingent Coupon Payment if the Observation Value ofeachUnderlying on the final Observation Dateis greater than or equal to 70.00% of its Starting Value. All payments on the Notes are subject to the credit risk of BofA Finance LLC (“BofA Finance” or the “Issuer”), as issuer of the Notes, and Bank of AmericaCorporation (“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 $920.00 and $970.00 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-11 of this pricing supplement and “Structuring the Notes” on page PS-28of this pricing supplement for There are important differences between the Notes and a conventional debt security. Potential purchasers of the Notes should consider theinformation in “Risk Factors” beginning on page PS-11of 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 $992.25 per $1,000.00 inprincipal amount of Notes. (2)The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $7.75, resulting in proceeds, before expenses, to BofA Finance ofas low as $992.25 per $1,000.00 in principal amount of Notes. (3)In addition to the underwriting discount above, if any, an affiliate of BofA Finance will pay a referral fee of up to $5.00 per $1,000.00 in principal amount of theNotes in connection with the distribution of the Notes to other registered broker-dealers. Contingent Income Issuer Callable Yield Notes Linked to the Least Performing of the Nasdaq-100®Utilities Select Sector SPDR®Fund Contingent Income Issuer Callable Yield Notes Linked to the Least Performing of the Nasdaq-100®Utilities Select Sector SPDR®Fund market-linked notes, and the economic terms of certain related hedging arrangements BAC’s affiliates enter into. BAC’s internal funding rate is typically lowerthan the rate it would pay when it issues conventional fixed or floating rate debt securities. This difference in funding rate, as well as the underwriting discount, ifany, the referral fee and the hedging related charges described below (see “Risk Factors” beginning on page PS-11), will reduce the economic terms of the Notesto you and the initial estimated value of the Notes. Due to these factors, the public offering price you pay to purchase the Notes will be greater than the initial The initial estimated value range of the Notes is set forth on the cover page of this pricing supplement. The final pricing supplement will set forth the initialestimated value of the Notes as of the pricing date. For more information about the ini