BofA Finance LLC $-- Auto-Callable Notes Fully and Unconditionally Guaranteed by Bank of America Corporation Linked to the Common Stock of JPMorgan Chase & Co.• 2026 and expected to issue on April 8, 2026.Approximate 5 year term if not called prior to maturity. •Beginning with the April 12, 2027 Call Observation Date, automatically callable monthly for an amount equal to the applicable Call Amount if, on Observation Dates and Call Amounts are indicated on page PS-4.• Starting Value but greater than or equal to 70% 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.• The Notes will not be listed on any securities exchange.CUSIP No. 09711Q4S9. The initial estimated value of the Notes as of the pricing date is expected to be between $920.00 and $980.00 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 predicted with accuracy. See “Risk Factors” beginning on page PS-9 of this pricing supplement and “Structuring the Notes” on page PS-15 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-9 of this pricing supplement, page PS-4 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 (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 $997.00 per (2)The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $3.00, resulting in proceeds, before expenses, to BofAFinance of as low as $997.00 per $1,000.00 in principal amount of Notes. * The Call Observation Dates are subject to postponement as set forth in “Description of the Notes—Certain Terms of the Notes—Events Relating toObservation Dates” on page PS-18 of the accompanying product supplement, with references to “Observation Dates” being read as references to “Call Observation Dates.” 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 UnderlyingStock. 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-9), 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 you pay to purchase the Notes will be greater than the initial estimated value of the Notes as of the pricing date.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 Notes Linked to the Common Stock of JPMorgan Chase & Co. Hypothetical Payout Profile and Examples of Payments on the Notes Examples and Auto-Callable Notes Table The following examples and table are for purposes of illustration only. They are based onhypotheticalvalues and showhypotheticalreturns on theNotes. The examples and table illustrate payments on the Notes based on a hypothetical Starting Value of 100 for the Underlying Stock, a hypotheticalCall Value of 100 for the Underlying Stock, a hypothetical Redemption Barrier of 100 for the Underlying Stock, a hypothetical Threshold Value of 70 forthe Underlying Stock., Call Amounts as indicated on page PS-4, the Redemption Amount of $1,765.00 per $1,000.00 in principal amount of Notes if theEnding Value is greater than or eq