美国银行美股招股说明书(2025-12-11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 of the Nasdaq-100®Index, the State Street Energy Select SectorSPDR®ETF and the State Street SPDR®S&P Biotech ETF• The Contingent Income Auto-Callable Yield Notes Linked to the Least Performing of the Nasdaq-100®Index, the State Street Energy Select Sector SPDR®ETF andthe State Street SPDR®S&P Biotech ETF, due March 17, 2027 (the “Notes”) are expected to price on December 12, 2025 and expected to issue on December 17,2025.• Approximate 15 month term if not called prior to maturity. Payments on the Notes will depend on the individual performance of the Nasdaq-100®Index, the State Street Energy Select Sector SPDR®ETF and the StateS&P Biotech ETF (each an “Underlying”). Beginning with the June 12, 2026 Call Observation Date, automatically callable quarterly 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. •Assuming the Notes are not called prior to maturity, ifanyUnderlying has declined by more than 35% from its Starting Value on any Trading Day during the Knock-InPeriod, and the Ending Value of the Least Performing Underlying is less than its Starting Value, at maturity your investment will be subject to 1:1 downside exposureto decreases in the value of the Least Performing Underlying, with up to 100% of the principal at risk; otherwise, at maturity, you will receive the principal amount. Atmaturity you will also receive a final Contingent Coupon Payment if the Observation Value ofeachUnderlying on the final Observation Date is greater than or equal to70.00% of its Starting Value.• The “Knock-In Period” will be the period from but excluding the pricing date to and including the Valuation 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 $910.90 and $960.90 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-28of 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-12 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 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 $997.50 per $1,000.00 inprincipal amount of Notes. The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $2.50, resulting in proceeds, before expenses, to BofA Finance ofas low as $997.50 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 $5.50 per $1,000.00 in principal amount of theNotes in connection with the distribution of the Notes to other registered broker-dealers. Selling Agent Contingent Income Auto-Callable Yield Notes Linked to the Least Performing of the Nasdaq-100®Index, the State Street Energy Select SectorSPDR®ETF and the State Street SPDR®S&P Biotech ETF Contingent Income Auto-Callable Yield Notes Linked to the Least Performing of the Nasdaq-100®Index, the State Street Energy Select SectorSPDR®ETF and the State Street SPDR®S&P Biotech ETF Terms of the Notes Contingent Income Auto-Callable Yield Notes Linked to the Least Performing of the Nasdaq-100®Index, the State Street Energy Select SectorSPDR®ETF and the St