美国银行美股招股说明书(2025-12-17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 State Street® Utilities State Street®Select Sector SPDR® •The Contingent Income Auto-Callable Yield Notes Linked to the Least Performing of the State Street® Contingent coupon rate of 12.00% per annum (1.00% per month) payable monthly if the Observation Value ofeachUnderlying on the applicable Observation Dateis greater than or equal to 70.00% of its Starting Value, assuming the Notes have not been called. •Beginning with the March 19, 2026 Call Observation Date, automatically callable monthly for an amount equal to the principal amount plus the relevant ContingentCoupon Payment, if the Observation Value of each Underlying is greater than or equal to 100.00% of its Starting Value on any Call Observation Date. 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 $910.00 and $960.00 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-9 of this pricing supplement and “Structuring the Notes” on page PS-27of 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-9 of this pricing supplement,page PS-3 of the accompanying product supplement, page S-7 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 ofthese 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 $976.25 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 $23.75, resulting in proceeds, before expenses, to BofA Finance ofas low as $976.25 per $1,000.00 in principal amount of Notes. * 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-18 of the accompanying product supplement, with references to “Observation Dates” being read as references to “Call ObservationDates.” Any payments on the Notes depend on the credit risk of BofA Finance, as Issuer, and BAC, as Guarantor, and on the performance of the Underlyings. Theeconomic terms of the Notes are based on BAC’s internal funding rate, which is the rate it would pay to borrow funds through the issuance of market-linkednotes, and the economic terms of certain related hedging arrangements BAC’s affiliates enter into. BAC’s internal funding rate is typically lower than the rate itwould pay when it issues conventional fixedor floating rate debt securities. This difference in funding rate, as well as the underwriting discount, if any, and thehedging related charges described below (see “Risk Factors” beginning on page PS-9), will reduce the economic terms of the Notes to you and 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 initial estimated value and the structuring of the Notes, see “Risk Factors”beginning on page PS-9and “Structuring the Notes” on page PS-27. Contingent Coupon Payment and Redemption Amount Determination Contingent Income Auto-Callable Yield Notes Linked to the Least Performing of the State Street®State Street®Utilities Select Sector SPDR®ETF and the VanEck®Semiconductor ETF Total Contingent Coupon Payment Examples The table below illustrates the hypothetical total Contingent Coupon Payments per $1,000.00 in principal amount of Notes over the term of the Notes, based onthe Contingent Coupon Payment of