杰富瑞金融集团股份有限公司美股招股说明书（2025-12-23版）

Prospectus Supplement dated May 12,2023 and Prospectus dated May 12, 2023) Jefferies Jefferies Financial Group Inc.Senior Autocallable Barrier Notes due December 29, 2031 Aggregate Principal Amount:Issue Price:Stated Principal AmountPricing Date:Original Issue Date:Call Observation Dates: Call Payment Dates: Valuation Date:Maturity Date:Underlying: The worst-performing of the Russell 2000® Index (the “RTY”), the S&P 500® Index (the “SPX”) and the Dow Jones Industrial Average®(the “INDU”).Please see“The Underlyings” below. Worst-Performing Underlying:Call Feature: Autocallable Notes. The Notes will be automatically called if the Observation Value of the Worst-Performing Underlying on any Call Observation Date (beginningapproximately one year after the Pricing Date) is equal to or greater than its Call Value.If your Notes are called, you will receive the applicable Call Payment on theapplicable Call Payment Date, and no further amounts will be payable on the Notes. Call Payment:Call Premium: The Call Premium applicable to each Call Observation Date is set forth on page PS-2 and reflects a return of approximately 9.70% per annum. The Notes are“Snowball Coupon Notes” for purposes of the accompanying product supplement and, for purposes of this pricing supplement, references in the accompanyingproduct supplement to “Snowball Coupon Payment” shall be deemed to refer to “Call Premium”. Payment at Maturity: each Note that you hold a Payment at Maturity that is less than the Stated Principal Amount of each Note that will equal: With respect to each of the first five Call Observation Dates, 2,402.954 with respect to the RTY (95% of its Initial Value, rounded to three decimal places); 6,492.78with respect to the SPX (95% of its Initial Value, rounded to two decimal places); and 45,728.15 with respect to the INDU (95% of its Initial Value, rounded to two With respect to each of the sixth through eleventh Call Observation Dates, 2,150.011 with respect to the RTY (85% of its Initial Value, rounded to three decimalplaces); 5,809.33 with respect to the SPX (85% of its Initial Value, rounded to two decimal places); and 40,914.66 with respect to the INDU (85% of its Initial Value,rounded to two decimal places) Threshold Value: 1,897.069 with respect to the RTY (75% of its Initial Value, rounded to three decimal places); 5,125.88 with respect to the SPX (75% of its Initial Value, rounded totwo decimal places); and 36,101.17 with respect to the INDU (75% of its Initial Value, rounded to two decimal places) Specified Currency:CUSIP/ISIN:Book-entry or Certificated Note:Business DayAgent:Calculation Agent:Trustee:Estimated value on the Pricing Date:$982.50 per Note.Please see “The Notes” below.Use of Proceeds:Listing:Conflict of Interest: 47233YSN6 / US47233YSN66 1 An affiliate of the Issuer will pay a structuring fee of up to $8.00 per Note in connection with the distribution of the Notes to other registered broker-dealers.Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this pricingsupplement or the accompanying product supplement, prospectus or prospectus supplement is truthful or complete.Any representation to the contrary is a criminal offense.As used in this pricing supplement,“we,”“us”and“our”refer to Jefferies Financial Group Inc., unless the context requires otherwise.We will deliver the Notes in book-entry form only through The Depository Trust Company on or about December 29, 2025 against payment in immediately available funds. Pricing supplement dated December 19, 2025.You should read this pricing supplement together with the related product supplement, prospectus and prospectus supplement, each of which can be accessed via thehyperlinks below, before you decide to invest. You should rely only on the information contained in or incorporated by reference in this pricing supplement and theaccompanying product supplement, prospectus and prospectus supplement.We have not authorized anyone to provide youwith different information.We are not making an offer of these securities in any state where the offer is not permitted.You Table of Contents SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS This pricing supplement and the accompanying product supplement, prospectus and prospectus supplement contain or incorporate byreference “forward-looking statements” within the meaning of the safe harbor provisions of Section 27A of the Securities Act of 1933(the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are not statements ofhistorical fact and represent only our belief as of the date such statements are made. There are a variety of factors, many of which arebeyond our control, which affect our operations, performance, business strategy and results and could cause actual reported resultsand performance to differ materially from the performance and expectatio