美国银行美股招股说明书(2025-11-24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 Dow Jones Industrial Average® Index and the S&P 500®Index •The Auto-Callable Notes Linked to the Least Performing of the Dow Jones Industrial Average® , the EURO STOXX 50®Index and the S&P 500®Index, dueDecember 5, 2030 (the “Notes”) are expected to price on December 2, 2025 and expected to issue on December 5, 2025. Approximate 5 year term if not called prior to maturity. Payment on the Notes will depend on the individual performance of the Dow Jones Industrial Average®, the EURO STOXX 50®Index and the S&P 500® (each an “Underlying”). 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 $1,515.00 per $1,000.00 in principal amount of your Notes. 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 are 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. No periodic interest payments. The Notes will not be listed on any securities exchange. CUSIP No. 09711KG91. Notes, 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-23of this pricing supplement foradditional information. 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-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. 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 $958.75 per $1,000.00 in * 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.” 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-23. Automatic Call and Redemption Amount Determination On eachCall Observation Date, your Notes may be automatically called,determined as follows: Auto-Callable Notes Linked to the Least Performing of the Dow Jones Industrial Average®Index Hypothetical Payout Profile and Examples of Payments on the Notes Examples and Auto-Callable Note