Jefferies Financial Group Inc美股招股说明书(2026-06-04版)

Prospectus Supplement dated May 11, 2026and Prospectus dated May 11, 2026) $1,250,000Jefferies Senior Autocallable Contingent Coupon Barrier Notes due June 5, 2031Linked to the iShares®Semiconductor ETFThe Senior Autocallable Contingent Coupon Barrier Notes due June 5, 2031 Linked to the iShares®Semiconductor ETF (the “Notes”) are senior unsecured obligations of Jefferies Financial Group Inc. The Notes have the terms described in the accompanying product supplement, prospectus supplement and prospectus, as supplemented ormodified 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 secured obligations and you will not have any security interest in, or otherwise have any access to, the Underlying or the securities represented by theUnderlying. Senior Autocallable Contingent Coupon Barrier Notes due June 5, 2031 Linked to the iShares®Semiconductor ETF$1,250,000. We may increase the Aggregate Principal Amount prior to the Original Issue Date but are not required to do so.$1,000 per Note$1,000 per NoteMay 29, 2026June 2, 2026June 5, 2026 (3 Business Days after the Pricing Date) Quarterly, beginning on September 2, 2026, as set forth on page PS-2. The Coupon Observation Dates are subject topostponement as described in the accompanying product supplement.As set forth on page PS-2. The Coupon Payment Dates may be postponed if the related Coupon Observation Date is postponed as Coupon Payment Dates: described in the accompanying product supplement.Quarterly, beginning on June 2, 2028, as set forth on page PS-2. The Call Observation Dates are subject to postponement as Call Observation Dates: described in the accompanying 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 Call Payment Dates: described in the accompanying product supplement.June 2, 2031, subject to postponement as described in the accompanying product supplement. Valuation Date:Maturity Date:Underlying:Coupon Feature: June 5, 2031, which may be postponed if the Valuation Date is postponed as described in the accompanying product supplement.The iShares®Semiconductor ETF (the “SOXX”). Please see “The Underlying” below.Contingent Coupon Payments. The Notes will pay a Contingent Coupon Payment of $34.75 on the applicable Coupon Payment Date if the Observation Value of the Underlying on the applicable quarterly Coupon Observation Date is greater than or equal to itsCoupon Barrier.Autocallable Notes. The Notes will be automatically called if the Observation Value of the Underlying on any Call Observation Date Call Feature: (beginning approximately two years after the Pricing Date) is equal to or greater than its Call Value. If your Notes are called, you willreceive the Call Payment on the applicable Call Payment Date, and no further amounts will be payable on the Notes.The Stated Principal Amount plus any Contingent Coupon Payment that may otherwise be due on the applicable Call PaymentDate.If the Final Value is greater than or equal to the Threshold Value, you will receive for each Note that you hold a Payment at Call Payment: Payment at Maturity: Maturity that is equal to the Stated Principal Amount., you will receive for each Note that you hold a Payment at If the Final Value is less than the Threshold ValueMaturity 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 Observation Value of the Underlying on the final Coupon Observation Date is greater than or equal to its Coupon Barrier.$569.08 Initial Value:Observation Value: The ETF Closing Price of the Underlyingtimesthe Adjustment Factor on the applicable Coupon Observation Date or CallObservation Date.The ETF Closing Price of the Underlyingtimesthe Adjustment Factor on the Valuation Date. Final Value:Coupon Barrier:Call Value:Threshold Value:Adjustment Factor: $341.45 (60% of the Initial Value, rounded to two decimal places) Initially 1.0, subject to adjustment for certain events affecting the Underlying. See “—Antidilution Adjustments for Exchange TradedFunds” in the accompanying product supplement.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: conflicts of interest and will be conducted 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 indebtednes