美国银行美股招股说明书(2025-10-31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 jurisdictionwhere such an offer would not be permitted. Linked to the Least Performing ofthe Common Stock of lululemon athletica inc. and the Common Stock ofModerna, Inc. •The Contingent Income (with Memory Feature) Auto-Callable Yield Notes Linked to the Least Performing ofthe Common Stock of lululemon athletica inc. and theCommon Stock of Moderna, Inc., 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 if not called prior to maturity.•Payments on the Notes will depend on the individual performance ofthe common stock of lululemon athletica inc. and the common stock of Moderna, Inc. (each an“Underlying Stock”).•Contingent coupons payable monthly if the Observation Value ofeachUnderlying Stock on the applicable Observation Date is greater than or equal to 60.00% of itsStarting Value, assuming the Notes have not been called. The coupon per $1,000.00 in principal amount of Notes payable on the related Contingent Payment Date, ifapplicable, will equal (i) theproductof $20.625timesthe number of Contingent Payment Dates that have occurred up to the relevant Contingent Payment Date(inclusive of the relevant Contingent Payment Date)minus(ii) the sum of all Contingent Coupon Payments previously paid.•Beginning with the April 30, 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 Stock is greater than or equal to 100.00% of its Starting Value on any Call Observation Date.•Assuming the Notes are not called prior to maturity, ifeitherUnderlying Stock declines by more than 40% 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 Stock, with up to 100% of the principal at risk; otherwise, at maturity,you will receive the principal amount. At maturity you will also receive a final Contingent Coupon Payment if the Observation Value ofeachUnderlying Stock on thefinal Observation Date is greater than or equal to 60.00% 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 Notes will not be listed on any securities exchange.•CUSIP No. 09711M6B3. The initial estimated value of the Notes as of the pricing date is expected to be between $900.00 and $950.00 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-12 of this pricing supplement and “Structuring the Notes” on page PS-19of 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-12of 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 $960.00 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 $40.00, resulting in proceeds, before expenses, to BofA Finance ofas low as $960.00 per $1,000.00 in principal amount of Notes. The Notes and the related guarantee:Are not Bank Guaranteed Selling Agent Contingent Income (with Memory Feature) Auto-Callable Yield Notes Linked to the Least Performing of the Common Stock of lululemonathletica inc. and the Common Stock of Moderna, Inc. Terms of the Notes Contingent Income (with Memory Feature) Auto-Callable Yield Notes Linked to the Least Performing of the Common Stock of lululemonathletica inc. and the Common