Jefferies Financial Group Inc美股招股说明书(2026-03-24版)

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not anoffer to sell these securities, nor a solicitation of an offer to buy these securities, in any jurisdiction where the offering is not permitted.PRELIMINARY PRICING SUPPLEMENT(to Product Supplement no. 5, dated October 23, 2023,Prospectus Supplement dated May 12, 2023and Prospectus dated May 12, 2023)SUBJECT TO COMPLETION, DATED March 24, 2026$JefferiesJefferies Financial Group Inc.Senior Autocallable Contingent Coupon Barrier Notes due April 14, 2032Linked to the Worst-Performing of the Dow Jones Industrial Average®, the Russell 2000®Index and the S&P 500®IndexThe Senior Autocallable Contingent Coupon Barrier Notes due April 14, 2032 Linked to the Worst-Performing of the Dow Jones Industrial Average®, the Russell 2000®Index and the S&P500®Index (the “Notes”) are senior unsecured obligations of Jefferies Financial Group Inc. The Notes have the terms described in the accompanying product supplement, prospectussupplement and prospectus, as supplemented or modified by this pricing supplement. The Notes are issued as part of our Series A Global Medium-Term Notes program.All payments are subject to our credit risk. If we default on our obligations, you could lose some or a significant portion of your investment. These Notes are not securedobligations and you will not have any security interest in, or otherwise have any access to, any Underlying or the securities represented by any Underlying.SUMMARY OF TERMSIssuer:Jefferies Financial Group Inc.Title of the Notes:Senior Autocallable Contingent Coupon Barrier Notes due April 14, 2032 Linked to the Worst-Performing of the Dow Jones Industrial Average®, theRussell 2000®Index and the S&P 500®IndexAggregate Principal Amount:$. We may increase the Aggregate Principal Amount prior to the Original Issue Date but are not required to do so.Issue Price:$1,000 per NoteStated Principal Amount:$1,000 per NotePricing Date:April 7, 2026Original Issue Date:April 14, 2026 (5 Business Days after the Pricing Date)Coupon Observation Dates:Quarterly, beginning on July 7, 2026, as set forth on page PS-2. The Coupon Observation Dates are subject to postponement as described in theaccompanying product supplement.Coupon Payment Dates:As set forth on page PS-2. The Coupon Payment Dates may be postponed if the related Coupon Observation Date is postponed as described in theaccompanying product supplement.Call Observation Dates:Quarterly, beginning on April 7, 2027, as set forth on page PS-2. The Call Observation Dates are subject to postponement as described in theaccompanying product supplement.Call Payment Dates:As set forth on page PS-2. The Call Payment Dates may be postponed if the related Call Observation Date is postponed as described in theaccompanying product supplement.Valuation Date:April 7, 2032, subject to postponement as described in the accompanying product supplement.Maturity Date:April 14, 2032, which may be postponed if the Valuation Date is postponed as described in the accompanying product supplement.Underlying:The worst-performing of the Dow Jones Industrial Average®(the “INDU”), the Russell 2000®Index (the “RTY”) and the S&P 500®Index (the “SPX”).Please see “The Underlyings” below.Worst-Performing Underlying:The Underlying with the lowest Observation Value or Final Value, as applicable, as compared to its Initial Value.Coupon Feature:Contingent Coupon Payments. The Notes will pay a Contingent Coupon Payment of $30.25 on the applicable Coupon Payment Date if the ObservationValue of the Worst-Performing Underlying on the applicable quarterly Coupon Observation Date is greater than or equal to its Coupon Barrier.Call Feature:Autocallable Notes. The Notes will be automatically called if the Observation Value of the Worst-Performing Underlying on any Call Observation Date(beginning approximately one year after the Pricing Date) is equal to or greater than its Call Value. If your Notes are called, you will receive the CallPayment on the applicable Call Payment Date, and no further amounts will be payable on the Notes.Call Payment:The Stated Principal Amount plus any Contingent Coupon Payment that may otherwise be due on the applicable Call Payment Date.Payment at Maturity:If the Final Value of the Worst-Performing Underlying is greater than or equal to its Threshold Value, you will receive for each Note that you hold aPayment 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 a Payment atMaturity 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 Contingent Coupon Payment if the Obse