Jefferies Financial Group Inc. 美股招股说明书（2026年3月13日版）

Prospectus Supplement dated May 12,2023 and Prospectus dated May 12, 2023) $1,500,000Jefferies Jefferies Financial Group Inc.Senior Fixed Coupon BarrierNotes due March 16, 2028 The Senior Fixed Coupon BarrierNotes due March 16, 2028 Linked to the Worst-Performing of the Common Stock of Delta Air Lines, Inc. and the S&P 500® Index (the “Notes”) are seniorunsecured obligations of Jefferies Financial Group Inc.The Notes have the terms described in the accompanying product supplement, prospectus supplement and prospectus, assupplemented or modified by this pricing supplement.The Notes are issued as part of our Series A Global Medium-Term Notes program. Jefferies Financial Group Inc.Senior Fixed Coupon BarrierNotes due March 16, 2028 Linked to the Worst-Performing of the Common Stock of Delta Air Lines, Inc. and theS&P 500® Index$1,500,000. We may increase the Aggregate Principal Amount prior to the Original Issue Date but are not required to do so. Aggregate Principal Amount:Issue Price:Stated Principal AmountStrike Date:Pricing Date: March 16, 2028, which may be postponed if the Valuation Date is postponed as described in the accompanying product supplement.The worst-performing of the common stock of Delta Air Lines, Inc. (NYSE symbol: “DAL”) (the “Underlying Company”) and the S&P 500®Index (the “SPX”).Please see “The Underlyings” below. Worst-Performing Underlying:Coupon Feature:Call Feature: Fixed Coupon Payments. The Notes will pay a Fixed Coupon Payment of $9.33 on each Coupon Payment Date.Notwithstanding anything to the contrary in the accompanying product supplement, the Notes will not be callable prior to maturity.If the Final Value of the Worst-Performing Underlying is greater than or equal to its Threshold Value, you will receive for each Notethat you hold a Payment at Maturity that is equal to the Stated Principal AmountIf the Final Value of the Worst-Performing Underlying is less than its Threshold Value, you will receive for each Note that you hold aPayment at Maturity that is less than the Stated Principal Amount of each Note that will equal: In this scenario the Payment at Maturity will be less than the Stated Principal Amount and you could lose some or all of your investment. The Payment at Maturity will also include the final Fixed Coupon Payment. Initial Value: $59.27 with respect to DAL; and6,781.48 with respect to the SPX Final Value: With respect to DAL, the Share Closing Price of the Underlyingtimesits Adjustment Factor on the Valuation Date.With respect to the SPX, the Index Closing Value of the Underlying on the Valuation Date. Threshold Value: $29.64 with respect to DAL (50% of its Initial Value, rounded to two decimal places); and3,390.74 with respect to the SPX (50% of its Initial Value) Adjustment Factor: Specified Currency:CUSIP/ISIN:Book-entry or Certificated Note:Business Day The Notes will be our senior unsecured obligations and will rank equally with our other senior unsecured indebtedness. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if thispricing supplement or the accompanying product supplement, prospectus or prospectus supplement is truthful or complete.Any representation to the contraryis 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 March 16, 2026 against payment in immediately available funds. Pricing supplement dated March 11, 2026.You should read this pricing supplement together with the related product supplement, prospectus and prospectus supplement, each of which can be accessedvia the hyperlinks 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