美国银行美股招股说明书(2026-05-28版)

Preliminary Pricing Supplement - Subject to Completion(To Prospectus dated December 8, 2025,Series A Prospectus Supplement dated December 8, 2025 andProduct Supplement EQUITY-1 dated December 8, 2025) Enhanced Return Notes Fully and Unconditionally Guaranteed by Bank of America Corporation Linked to the S&P 500®Futures Excess Return Index•The Enhanced Return Notes Linked to the S&P 500® price on June 25, 2026 and expected to issue on June 30, 2026.•Approximate 5 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 100% of its Starting Value, at maturity, you will receive 195.00% upside exposure toincreases in the value of the Underlying.•If the Underlying declines by more than 30% from its Starting Value, at maturity your investment will be subject to 1:1 downside exposureto decreases in the value of the Underlying, with up to 100% of the principal at risk; otherwise, at maturity, you will receive the principalamount.•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, andBank 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. The initial estimated value of the Notes as of the pricing date is expected to be between $890.00 and $950.00 per $1,000.00 in principal amountof 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 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-6 of this pricing supplement, page PS-3 of the accompanying product supplement, pageS-7 of the 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 ordisapproved of these securities or determined if this pricing supplement and the accompanying product supplement, prospectus supplement andprospectus is truthful or complete. 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 $958.75 per (2)The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $41.25, resulting in proceeds, before expenses, to BofAFinance of as low as $958.75 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 $5.00 per $1,000.00 in principalamount of the Notes in connection with the distribution of the Notes to other registered broker-dealers. Enhanced Return Notes Linked to the S&P 500® Enhanced Return Notes Linked to the S&P 500® whether at their maturity or upon acceleration, the Notes will not bear a default interest rate. 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. 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-linked notes, and the economic terms of certain related hedging arrangements BAC’s affiliates enter into. BAC’s internal funding rate is typically lowerthan the rate it would pay when it issues conventional fixed or floating rate debt securities. This difference in funding rate, as well as the underwriting 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 theinitial estimated 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 PS-6 and “Structuring the Notes” on PS-17. Redemption Amount Determination Enhanced Return Notes Linked to the S&P 500® Hypothetical Payout Profile and Examples of Payments at Maturity Enhanced Return Notes Table The following table is for purposes of illustration only. It is based onhypotheticalvalues and showshypotheticalreturns on the Notes. The tableillustrates the calculation of the Redemption Amount and the return on the Notes based on a hypothetical Starting Value of 100, a hypothetical ThresholdValue of 70, the Upside Participation Rate of 195.00% and a range of hypothetical Ending Values of the Underlying.The actual amount you receive For recent actual values of the Underlying, see “Th