美国银行美股招股说明书(2025-10-23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 pricing supplement and theaccompanying product supplement, prospectus supplement and prospectus are not an offer to sell these Notes in any country or jurisdiction where such an offer would not bepermitted. Linked to the S&P 500®Futures Excess Return Index •The Digital Return Plus Dual Directional Notes Linked to the S&P 500®Futures Excess Return Index, due November 3, 2028 (the “Notes”) are expected to price on October 31,2025 and expected to issue on November 5, 2025.•Approximate 3 year term.•Payment on the Notes will depend on the performance of the S&P 500®Futures Excess Return Index (the “Underlying”).•If the Ending Value of the Underlying is greater than or equal to 100% of its Starting Value, at maturity, you will receive the greater of i) 1-to-1 upside exposure to increases in thevalue of the Underlying and ii) a digital payment of $1,230.00 per $1,000.00 in principal amount of Notes.•If the Ending Value of the Underlying is less than 100% of the Starting Value but greater than or equal to 75% of the Starting Value, at maturity, you will receive a positive returnequal to the absolute value of the percentage decline in the Ending Value of the Underlying from the Starting Value.•If the Ending Value of theUnderlying declines by more than 25% from its Starting Value, at maturity your investment will be subject to 1:1 downside exposure to decreases in thevalue of the Underlying, with up to 100% of the principal at risk.•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” orthe “Guarantor”), as guarantor of the Notes.•No periodic interest payments.•The Notes will not be listed on any securities exchange.•CUSIP No. 09711MZK1. 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 of Notes, which is less thanthe public offering price listed below.The actual value of your Notes at any time will reflect many factors and cannot be predicted with accuracy. See “Risk Factors” beginning onpage PS-6 of this pricing supplement and “Structuring the Notes” on page PS-18of this pricing supplement for additional 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-6of this pricing supplement, page PS-5 of the accompanying product supplement, page S-6 of the accompanying prospectus supplement, and page7 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 Certain dealers who purchase the Notes for sale to certain fee-based advisory accounts may forgo some or all of their selling concessions, fees or commissions. The public offeringprice for investors purchasing the Notes in these fee-based advisory accounts may be as low as $990.00 per $1,000.00 in principal amount of Notes. The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $10.00, resulting in proceeds, before expenses, to BofA Finance of as low as $990.00 per 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 the Notes in connectionwith the distribution of the Notes to other registered broker-dealers. The Notes and the related guarantee: Digital Return Plus Dual Directional Notes Linked to the S&P 500®Futures Excess Return Index Terms of the Notes Digital Return Plus Dual Directional Notes Linked to the S&P 500®Futures Excess Return Index If an Event of Default, as defined in the senior indenture relating to the Notes and in the section entitled “Description of Debt Securities of BofAFinance LLC—Events of Default and Rights of Acceleration; Covenant Breaches” on page 54 of the accompanying prospectus, with respect tothe Notes occurs and is continuing, the amount payable to a holder of the Notes upon any acceleration permitted under the senior indenture willbe equal to the amount described under the caption “Redemption Amount” above, calculated as though the date of acceleration were theMaturity Date of the Notes and as though the Valuation Date were the third Trading Day prior to the date of acceleration. In case of a default inthe payment of the Notes, whether at their maturity or upon acceleration, the Notes will not bear a default interest rate. * Subject to change. Payment on the Notes depends on the credit risk of BofA Finance, as Issuer, and BAC, as Guarantor, and on the performance of the Underlying. The economic terms of the Notes arebased on BAC’s inter