美国银行美股招股说明书(2026-04-02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) Contingent Income Issuer Callable Yield Notes Fully and Unconditionally Guaranteed by Bank of America Corporation Linked to the Least Performing of the Russell 2000®Index and the S&P 500®IndexThe Contingent Income Issuer Callable Yield Notes Linked to the Least Performing of the Russell 2000®Index and the S&P 500® •Index, due May4, 2028 (the “Notes”) are expected to price on April 30, 2026 and expected to issue on May 5, 2026.•Approximate 2 year term if not called prior to maturity.•Payments on the Notes will depend on the individual performance of the Russell 2000®Index and the S&P 500®Index (each an “Underlying”).•Contingent coupon rate of 9.25% per annum (0.7709% per month) payable monthly if the closing level ofeachUnderlying on the applicableObservation Date is greater than or equal to 70.00% of its Starting Value, assuming the Notes have not been called.•Beginning on May 5, 2027, callable monthly at our option for an amount equal to the principal amount plus the relevant Contingent CouponPayment, if otherwise payable.•Assuming the Notes are not called prior to maturity, ifeitherUnderlying declines by more than 30% from its Starting Value, at maturity yourinvestment will be subject to 1:1 downside exposure to decreases in the value of the Least Performing Underlying, with up to 100% of the principalat risk; otherwise, at maturity, you will receive the principal amount. At maturity you will also receive a final Contingent Coupon Payment if theclosing level ofeachUnderlying on the final Observation Date is greater than or equal to 70.00% of its Starting Value.•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 ofAmerica Corporation (“BAC” or the “Guarantor”), as guarantor of the Notes.•The Notes will not be listed on any securities exchange.•CUSIP No. 09711Q3X9. The initial estimated value of the Notes as of the pricing date is expected to be between $907.60 and $957.60 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-9 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-9 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) (1)In addition to the underwriting discount above, if any, an affiliate of BofA Finance will pay a referral fee of up to $12.00 per $1,000.00 in principalamount of the Notes in connection with the distribution of the Notes to other registered broker-dealers.The Notes and the related guarantee: Selling Agent Contingent Income Issuer Callable Yield Notes Linked to the Least Performing of the Russell 2000®Index and the S&P 500®Index Terms of the Notes Contingent Income Issuer Callable Yield Notes Linked to the Least Performing of the Russell 2000®Index and the S&P 500®Index 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 Underlyings.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, the referral fee and the hedging related charges described below (see “Risk Factors” beginning on page PS-9), will reducethe economic terms of the Notes to you and the initial estimated value of the Notes. Due to these factors, the public offering price you pay to purchasethe 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