美国银行美股招股说明书(2026-03-05版)

BofA Finance LLC $-- 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) Fully and Unconditionally Guaranteed by Bank of America Corporation Linked to the iShares®MSCI Emerging Markets ETF• to price on March 26, 2026 and expected to issue on March 31, 2026.Approximate 5 year term if not called prior to maturity. •Automatically callable at an amount equal to the Call Amount if, on the Call Observation Date, the Observation Value of the Underlying is equal to 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, at maturity, you will receive between [140.00% and 150.00%] upside exposure to increases in the value of the Underlying from its Starting Value.The actual upside exposure will be determined on the pricing date. However, assuming the Notes are not called prior to maturity, if the Underlying declines by more than 40% from its Starting Value, at maturity yourinvestment will be subject to 1:1 downside exposure to decreases in the value of the Underlying, with up to 100% of the principal 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 Starting Value but greater No periodic interest payments.The Notes will not be listed on any securities exchange.CUSIP No. 09711KB96. •The initial estimated value of the Notes as of the pricing date is expected to be between $910.00 and $960.00 per $1,000.00 in principal amount of 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-17 of 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 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 and (2)The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $35.00, resulting in proceeds, before expenses, to BofA Finance of as low as $965.00 per $1,000.00 in principal amount of Notes. The Notes and the related guarantee: Auto-Callable Enhanced Return Notes Linked to the iShares® Call Observation Date, Call Payment Date and Call Amount 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 the 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 Automatic Call and Redemption Amount Determination Auto-Callable Enhanced Return Notes Linked to the iShares® All payments described above are subject to the credit risk of BofA Finance, as Issuer, and BAC, as Guarantor. Auto-Callable Enhanced Return Notes Linked to the iShares® Hypothetical Payout Profile and Examples of Payments at Maturity Auto-Callable Enhanced Return Notes Table The following table is for purposes of illustration only. It assumes the Notes have not been automatically called prior to maturity and is based onhypotheticalvalues and showshypotheticalreturns on the Notes. The table illustrates the calculation of the Redemption Amount and the return on theNotes based on a hypothetical Starting Value of 100, a hypothetical Redemption Barrier of 100 for the Underlying, a hypothetical Threshold Value of 60,an Upside Participation Rate of 145.00% (the midpoint of the range of between [140.00% to 150.00%])and a range of hypothetical Ending Values of theUnderlying.The actual amount you receive and the resulting return will depend on t