富国银行美股招股说明书(2026-07-07版)

Subject To Completion, dated July 7, 2026PRICING SUPPLEMENT No. 78 dated July, 2026(To Product Supplement No. 1 dated February 13, 2026,Prospectus Supplement dated February 13, 2026and Prospectus dated February 13, 2026) Wells Fargo Finance LLCMedium-Term Notes, Series B Fully and Unconditionally Guaranteed by Wells Fargo & CompanyEquity Linked SecuritiesMarket Linked Securities—Auto-Callable with Contingent Coupon and Contingent Downside Principal at Risk Securities Linked to the Lowest Performing of the Class A Common Stock of Meta Platforms, Inc.and the Common Stock of NVIDIA Corporation due July 20, 2028 ■Linkedto thelowest performingof theClass A common stock of Meta Platforms, Inc. and the common stock of NVIDIA Corporation(each referred to as an “Underlier”)■Unlike ordinary debt securities, the securities do not provide for fixed payments of interest, do not repay a fixed amount of principal at stated maturity and are subject to potentialautomatic call prior to stated maturity upon the terms described below. Whether the securities pay a contingent coupon, whether the securities are automatically called prior tostated maturity and, if they are not automatically called, whether you receive the face amount of your securities at stated maturity, will depend, in each case, on the closing value ofthe lowest performing Underlier on the relevant calculation day. The lowest performing Underlier on any calculation day is the Underlier that has the lowest closing value on thatcalculation day as a percentage of its starting value■Contingent Coupon.The securities will pay a contingent coupon on a monthly basis until the earlier of stated maturity or automatic call if,and only if, the closing value of the lowest performing Underlier on the calculation day for that month is greater than or equal to its coupon threshold value. However, if the closing value of the lowest performingUnderlier on a calculation day is less than its coupon threshold value, you will not receive any contingent coupon for the relevant month. If the closing value of the lowest performingUnderlier is less than its coupon threshold value on every calculation day, you will not receive any contingent coupons throughout the entire term of the securities. The couponthreshold value for each Underlier is equal to 60% of its starting value. The contingent coupon rate will be determined on the pricing date and will be at least 14.00% per annum■Automatic Call.If the closing value of the lowest performing Underlier on any of the monthly calculation days scheduled to occur from January 2027 to June 2028, inclusive, isgreater than or equal to its starting value, the securities will be automatically called for the face amount plus a final contingent coupon payment ■Potential Loss of Principal.If the securities are not automatically called prior to stated maturity, you will receive the face amount at stated maturity if,and only if, the closing valueof the lowest performing Underlier on the final calculation day is greater than or equal to its downside threshold value. If the closing value of the lowest performing Underlier on thefinal calculation day is less than its downside threshold value, you will lose more than 50%, and possibly all, of the face amount of your securities. The downside threshold valueforeach Underlier is equal to 50% of its starting value■If the securities are not automatically called prior to stated maturity, you will have full downside exposure to the lowest performing Underlier from its starting value if its closing value on the final calculation day is less than its downside threshold value, but you will not participate in any appreciation of either Underlier and will not receive any dividends on either■Your return on the securities will dependsolelyon the performance of the Underlier that is the lowest performing Underlier on each calculation day. You will not benefit in any way Underlier from the performance of the better performing Underlier. Therefore, you will be adversely affected ifeither Underlierperforms poorly, even if the other Underlier performs favorably■All payments on the securities are subject to credit risk, and you will have no ability to pursue either Underlier for payment; if Wells FargoFinance LLC, as issuer, and Wells Fargo &Company, as guarantor, default on their obligations, you could lose some or all of your investment■No exchange listing; designed to be held to maturity or automatic call Thecurrent estimated value of the securities is approximately $955.90 per security. While the estimated value of the securities at pricing maydiffer from the estimated value set forth above, we do not expect it to differ significantly absent a material change in market conditions or otherrelevant factors. In no event will the estimated value of the securities on the pricing date be less than $920.00 per security. The estimated valueof the securities was determined for us by Wells Fargo Securities, LLC using its pr