Jefferies Financial Group Inc美股招股说明书(2025-08-20版)

AMENDMENT NO. 1 TO PRICING SUPPLEMENT dated August 15, 2025(To Product Supplement No. 2 dated June 30, 2023Prospectus Supplement dated May 12, 2023and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Principal at Risk Securities Linked to the Common Stock of Amazon.com, Inc.due August 18, 2028■Linked to the common stock of Amazon.com, Inc. (the “Underlying Stock”). ■Unlike ordinary debt securities, the securities do not pay interest and provide for a minimum payment at maturity equal to only 90% of theface amount. Instead, the securities provide for a maturity payment amount that may be greater than, equal to or less than the faceamount of the securities, depending on the performance of the Underlying Stock from its starting price to its ending price. The maturitypayment amount will reflect the following terms:■If the price of the Underlying Stock increases, you will receive the face amount plus a positive return equal to 100% of the percentage increase in the price of the Underlying Stock from the starting price to the ending price, subject to a maximum returnat maturity of32.50% of the face amount. As a result of the maximum return, the maximum maturity payment amount is$1,325.00■If the price of the Underlying Stock remains unchanged, you will receive the face amount■If the price of the Underlying Stock decreases, you will have 1-to-1 downside exposure to the first 10% decrease in the price ofthe Underlying Stock from the starting price to the ending price and you may lose up to 10% of the face amount■Investors may lose up to 10% of the face amount ■All payments on the securities are subject to our credit risk, and you will have no ability to pursue the Underlying Stock Issuer forpayment; if we default on our obligations under the securities, you could lose some or all of your investment■No periodic interest payments or dividends■No exchange listing; designed to be held to maturity We estimate that the value of each security on the pricing date is $959.00 per security. See “Estimated Value of the Securities” in this pricing supplement.The securities have complex features and investing in the securities involves risks not associated with an investment in conventional debt securities. See“Selected Risk Considerations” beginning on page PRS-8 herein and “Risk Factors” beginning on page PS-5 of the accompanying product supplement.The securities are senior unsecured obligations of Jefferies Financial Group Inc. and, accordingly, all payments are subject to our credit risk. If we default on ourobligations under the securities, you could lose some or all of your investment. The securities are not savings accounts, deposits or other obligations of adepository institution and are not insured by the Federal Deposit Insurance Corporation, the Deposit Insurance Fund or any other governmental agency.Neither the Securities and Exchange Commission nor any state securities commission or other regulatory body has approved or disapproved of these securitiesor passed upon the accuracy or adequacy of this pricing supplement or the accompanying product supplement, prospectus supplement and prospectus. Anyrepresentation to the contrary is a criminal offense. Wells Fargo Securities Jefferies Market Linked Securities—Upside Participation to a Cap andPartialPrincipal Return at MaturityPrincipal at Risk Securities Linked to the Common Stock of Amazon.com, Inc.due August 18, 2028 Market Linked Securities—Upside Participation to a Cap andPartialPrincipal Return at MaturityPrincipal at Risk Securities Linked to the Common Stock of Amazon.com, Inc.due August 18, 2028 Market Linked Securities—Upside Participation to a Cap andPartialPrincipal Return at MaturityPrincipal at Risk Securities Linked to the Common Stock of Amazon.com, Inc.due August 18, 2028 Additional Information about the Issuer and the Securities You should read this pricing supplement together with product supplement No. 2 dated June 30, 2023, the prospectus supplement dated May 12,2023 and the prospectus dated May 12, 2023 for additional information about the securities. Information included in this pricing supplementsupersedes information in the product supplement, prospectus supplement and prospectus to the extent it is different from that information.Certain defined terms used but not defined herein have the meanings set forth in the product supplement, prospectus supplement or prospectus. As used in this pricing supplement, “we,” “us” and “our” refer to Jefferies Financial Group Inc., unless the context requires otherwise. •Product Supplement No. 2 dated June 30, 2023:https://www.sec.gov/Archives/edgar/data/96223/000114036123032428/brhc20055267_424b2.htm•Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023:https://www.sec.gov/Archives/edgar/data/96223/000114036123024421/ny20009069x3_424b2.htm PRS-4 Market Linked Securities—Upside Participation to a Cap andPartialPrincipal Return at MaturityPrincipal at Risk Secu