Jefferies Financial Group Inc美股招股说明书(2026-08-04版)

Prospectus Supplement dated May 11, 2026and Prospectus dated May 11, 2026) $1,801,000Jefferies The Senior Autocallable Barrier Notes due August 5, 2031 Linked to the Worst-Performing of the Dow Jones Industrial Average®, the Russell 2000®Index and the S&P 500®Index (the“Notes”) are senior unsecured obligations of Jefferies Financial Group Inc. The Notes have the terms described in the accompanying product supplement, prospectus supplement andprospectus, 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 TERMS Aggregate Principal Amount:Issue Price:Stated Principal Amount:Pricing Date:Original Issue Date:Call Observation Dates: Quarterly, beginning on July 31, 2028, as set forth on page PS-2. The Call Observation Dates are subject to postponement as described in theaccompanying product supplement.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 the Call Payment Dates: accompanying product supplement.July 31, 2031 (which is also the final Call Observation Date), subject to postponement as described in the accompanying product supplement. Valuation Date:Maturity Date:Underlying: August 5, 2031, which may be postponed if the Valuation Date is postponed as described in the accompanying product supplement.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.The Underlying with the lowest Observation Value or Final Value, as applicable, as compared to its Initial Value. Autocallable Notes. The Notes will be automatically called if the Observation Value of the Worst-Performing Underlying on any Call Observation Date (beginning approximately two years 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 the applicable Call Payment Date, and no further amounts will be payable on the Notes.The Stated Principal Amount plus the applicable Call Premium.The Call Premium applicable to each Call Observation Date is set forth on page PS-2 and reflects a return of approximately 12.50% per Call Payment:Call Premium: annum. The Notes are “Snowball Coupon Notes” for purposes of the accompanying product supplement and, for purposes of this pricingsupplement, references in the accompanying product supplement to “Snowball Coupon Payment” shall be deemed to refer to “Call Premium”.If the Notes are not called prior to maturity and the Final Value of the Worst-Performing Underlying is greater than or equal to its Payment at Maturity: 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.52,485.03 with respect to the INDU; 2,931.339 with respect to the RTY; and 7,489.72 with respect to the SPX Initial Value:Observation Value:Final Value:Call Value: 52,485.03 with respect to the INDU (100% of its Initial Value); 2,931.339 with respect to the RTY (100% of its Initial Value); and 7,489.72 withrespect to the SPX (100% of its Initial Value)31,491.02 with respect to the INDU (60% of its Initial Value, rounded to two decimal places); 1,758.803 with respect to the RTY (60% of its Initial Value, rounded to three decimal places); and 4,493.83 with respect to the SPX (60% of its Initial Value, rounded to two decimal places)U.S. dollars Specified Currency:CUSIP/ISIN:Book-entry or Certificated Note:Business Day:Agent:Calculation Agent:Trustee:Estimated value on the Pricing Date:Use of Proceeds:Listing:Conflict of Interest: Jefferies LLC, a wholly-owned subsidiary of Jefferies Financial Group Inc. See “Supplemental Plan of Distribution.”Jefferies Financial Services, Inc., a wholly owned subsidiary of Jefferies Financial Group Inc. Jefferies LLC, the broker-dealer subsidiary of Jefferies Financial Group Inc., is a member of FINRA and will participate in the distribution of thenotes being offered hereby. Accordingly, the offering is subject to the provisions of FINRA Rule 5121 relating to conflicts of interest and will beconducted in accordance with the requirements of Rule 5121. See “Conflict of Interest.”The Notes will be our senior unsecured obligations and will rank equally with our other senior unsecured indebtedness. 1An affiliate of the Issuer will pay a structuring fee of up to $7.00 per Note in connection with the distribution of the Notes to other registered broker-dealers. Neither the Securities and Exchange Commission nor any state sec