美国银行美股招股说明书(2026-06-03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) Buffered Issuer Callable Enhanced Return Notes Fully and Unconditionally Guaranteed by Bank of America Corporation Linked to the S&P 500®Futures Excess Return Index• The Buffered Issuer Callable Enhanced Return Notes Linked to the S&P 500®Futures Excess Return Index, due June 20, 2031 (the “Notes”) areexpected to price on June 15, 2026 and expected to issue on June 18, 2026.•Approximate 5 year term if not called prior to maturity.•Payment on the Notes will depend on the performance of the S&P 500®Futures Excess Return Index (the “Underlying”).•Beginning on June 25, 2027, callable monthly at our option at an amount equal to the applicable Call Amount. The Call Amounts are indicated onpage PS-4.•Assuming the Notes are not called prior to maturity, if the Ending Value of the Underlying is greater than or equal to 100% of its Starting Value, atmaturity, you will receive 200.00% upside exposure to increases in the value of the Underlying from its Starting Value.•However, assuming the Notes are not called prior to maturity, if the Underlying declines by more than 15% from its Starting Value, at maturity yourinvestment will be subject to 1:1 downside exposure to decreases in the value of the Underlying beyond a 15% decline, with up to 85% of theprincipal at risk. Otherwise, if the Notes are not called prior to maturity and the Ending Value of the Underlying is less than 100.00% of its StartingValue but greater than or equal to 85% of its Starting Value, at maturity you will receive the principal amount of your Notes.•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 ofAmerica 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. 09712CZS5. The initial estimated value of the Notes as of the pricing date is expected to be between $880.00 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 bepredicted with accuracy. See “Risk Factors” beginning on page PS-8 of this pricing supplement and “Structuring the Notes” on page PS-20 of this pricingsupplement for additional 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-8 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 $957.50 per$1,000.00 in principal amount of Notes.(2)The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $42.50, resulting in proceeds, before expenses, to BofA Finance of as low as $957.50 per $1,000.00 in principal amount of Notes. The Notes and the related guarantee: Selling Agent Buffered Issuer Callable Enhanced Return Notes Linked to the S&P 500®Futures Excess Return Index Terms of the Notes Buffered Issuer Callable Enhanced Return Notes Linked to the S&P 500®Futures Excess Return Index Call Payment Dates and Call Amounts 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 Underlying.The economic 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 ofmarket-linked notes, and the economic terms of certain related hedging arrangements BAC’s affiliates enter into. BAC’s internal funding rate is typicallylower than the rate it would pay when it issues conventional fixed or floating rate debt securities. This difference in funding rate, as well as theunderwriting discount, if any, and the hedging related charges described below (see “Risk Factors” beginning on page PS-8), will reduce the economicterms of the Notes to you and the initial estimated value of the Notes. Due to these factors, the public offering price