Jefferies Financial Group 424B Filings

Jefferies Financial Group Inc. is offering Senior Autocallable Leveraged Barrier Notes due June 3, 2031. Each Note has a $1,000 Stated Principal Amount and pays no interest. Notes are autocallable on an Observation Date with a $1,127 Call Payment if all underlyings meet their Call Values. At maturity the Payment depends on the Worst-Performing Underlying: investors receive the Stated Principal plus 125.00% Participation of upside if that underlying appreciated; if it finishes between 70% (Threshold) and 100% (Initial) of its Initial Value, investors receive the Stated Principal; if it finishes below 70% investors lose 1% of principal for every 1% decline (up to a 100% loss). All payments are subject to Jefferies’ credit risk. Pricing Date is May 29, 2026, Original Issue Date June 3, 2026, Valuation Date May 29, 2031. The notes are linked to the worst-performing of the S&P 500® (SPX), XLK and XLE. Use of proceeds: general corporate purposes.

Jefferies Financial Group Inc. offers senior fixed rate 8 Year Callable Notes paying 6.00% interest and maturing May 29, 2034. The Notes have an Original Issue Date of May 29, 2026 and an issue price of $1,000 per Note (100%). The issuer may redeem the Notes, in whole or in part, on each Optional Redemption Date beginning May 29, 2027 upon at least five Business Days’ notice. All payments are subject to the credit risk of Jefferies Financial Group Inc., the Notes are unsecured senior obligations, and proceeds are for general corporate purposes. The pricing supplement discloses limited liquidity, potential secondary market discounts and a temporary upward valuation adjustment during an initial period.

Jefferies Financial Group Inc. priced senior autocallable barrier notes due May 30, 2031 linked to the worst-performing of the S&P 500®, EURO STOXX 50® and Russell 2000®. The Notes have a $1,000 Stated Principal Amount and an Issue Price equal to 100% of par. Jefferies estimates the Notes' value on the Pricing Date at approximately $978.00. The Notes are autocallable on quarterly Call Observation Dates beginning about one year after pricing; each Call Payment equals principal plus a Call Premium (the Call Premiums range by observation date). At maturity, if the Worst-Performing Underlying's Final Value is below its Threshold Value (set at 60% of its Starting Value), holders face 1:1 downside exposure to the decline and may lose up to the full principal. All payments are subject to Jefferies' credit risk; the Notes are senior unsecured obligations and are not listed.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due June 1, 2029, linked to the worst-performing of the Nasdaq-100, Russell 2000 and S&P 500. Each Note has a $1,000 stated principal amount and pays a monthly contingent coupon of $9.42 if the worst-performing underlying is at or above its 70% coupon barrier on each observation date. The Notes are autocallable beginning about one year after issuance and return principal at maturity only if the worst-performing underlying is at or above its 70% threshold; otherwise you suffer 1:1 downside to the underlying. All payments are subject to Jefferies' credit risk and the issuer estimates an initial value of about $980.90 per Note.

Jefferies Financial Group Inc. is offering Senior Autocallable Barrier Notes due June 3, 2031 linked to the worst-performing of the Russell 2000®, the S&P 500® and the Dow Jones Industrial Average®. Each Note has a $1,000 Stated Principal Amount and an Issue Price equal to $1,000. Pricing Date is May 29, 2026 and Original Issue Date is June 3, 2026.

The notes are senior unsecured obligations of Jefferies Financial Group Inc., subject to its credit risk. They are autocallable on annual Call Observation Dates beginning June 1, 2027, with listed Call Premiums and Call Payments up to a final Call Payment of $1,642.50. At maturity, if the worst-performing underlying is below 75% of its Initial Value, the holder suffers 1:1 downside exposure; if at or above the Threshold Value, the holder receives the Stated Principal Amount.

Jefferies Financial Group Inc. is issuing $2,219,000 of Senior Autocallable Barrier Notes due May 20, 2031. The Notes are linked to the worst-performing of the Russell 2000®, S&P 500® and Dow Jones Industrial Average® and pay an annual autocallable Call Premium if the Worst-Performing Underlying meets or exceeds specified Call Values on scheduled Call Observation Dates. If not called, repayment at maturity depends on the Final Value of the Worst-Performing Underlying relative to its Threshold Value; investors face 1-for-1 downside below the Initial Value and may lose up to 100% of principal. Issue price is $1,000 per Note, estimated value on pricing date was $977.30, and proceeds (before expenses) are $2,219,000 for general corporate purposes.

Jefferies Financial Group Inc. is offering $195,000 aggregate principal of Senior Barrier Digital Return Notes due May 19, 2028 linked to the worst-performing of the S&P 500® Index and the Russell 2000® Index. Each Note has a Stated Principal Amount of $1,000 and an Issue Price of $1,000 per Note.

At maturity the Notes pay a fixed Digital Payment of $1,208.00 per Note if the Final Value of the Worst-Performing Underlying is greater than or equal to its Threshold Value (80% of Initial Value). If the Final Value is below the Threshold Value, holders lose 1% of principal for every 1% decline in the Worst-Performing Underlying from its Initial Value, and may lose up to 100% of principal. Jefferies estimates the Notes' value on the Pricing Date at $958.00 per Note. Proceeds before expenses are $191,100.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes with an Aggregate Principal Amount of $2,041,000. The notes pay a contingent quarterly coupon of $30 if the worst-performing underlying meets its coupon barrier, are autocallable beginning about six months after issuance, and mature on May 18, 2028.

The notes are senior unsecured obligations linked to the worst-performing of EFA (iShares MSCI EAFE ETF), the Russell 2000, and the S&P 500. If not called, maturity pay‑out is either the $1,000 stated principal or 1‑for‑1 downside exposure to declines in the worst-performing underlying from its Initial Value, subject to credit and other risks described herein.

Jefferies Financial Group Inc. is offering Senior Autocallable Leveraged Barrier Notes due May 18, 2029, linked to the worst-performing of the S&P 500® Index and the State Street® SPDR® S&P® MidCap 400® ETF Trust (MDY). The offering aggregates $3,040,000 at an issue price of $1,000 per Note. Notes pay no interest, include an autocall feature with a Call Observation Date of May 17, 2027 (Call Payment $1,137.00 per Note), and mature on May 18, 2029. At maturity investors receive the stated principal plus 125.00% Participation Rate of upside if the worst-performing underlying is higher; if the worst-performing underlying falls below its Threshold Value (70% of Initial Value) principal losses occur on a dollar‑for‑dollar basis, potentially up to 100%. Payments are unsecured and subject to Jefferies’ credit risk. The estimated value on the pricing date was $955.10 per Note.

Jefferies Financial Group Inc. priced a $956,000 offering of Senior Autocallable Leveraged Barrier Notes due May 18, 2029. The notes are senior unsecured obligations that pay no interest, have a $1,000 stated principal amount per note and were issued at $1,000 per note with an estimated value of $974.80 on the pricing date.

The notes are linked to the worst-performing of the S&P 500® Index and the State Street® SPDR® S&P® MidCap 400® ETF Trust, include an autocall on the Call Observation Date of May 17, 2027 with a Call Payment of $1,172.50 per note, and feature a 125.00% Participation Rate on upside at maturity. If the Worst-Performing Underlying finishes below its Threshold Value (70% of Initial Value), investors lose 1% of principal for each 1% decline in that Underlying; loss of up to 100% of principal is possible.

Jefferies Financial Group Inc. is offering Senior Barrier Digital Return Notes due November 19, 2027 with an Aggregate Principal Amount of $723,000. Each Note has a Stated Principal Amount of $1,000 and an Issue Price of $1,000 per Note.

The Notes pay no interest and return a Digital Payment of $1,179.00 per Note at maturity if the Final Value of the Worst-Performing Underlying (the lower of the S&P 500® and the Russell 2000®) is at or above its 80% Threshold Value on the Valuation Date. If the Worst-Performing Underlying is below its Threshold Value, the Payment at Maturity declines 1% for each 1% decline in that Underlying from its Initial Value, exposing holders to up to a 100% loss of principal.

Jefferies Financial Group Inc. priced $3,152,000 of senior fixed‑rate 10‑year callable notes due May 20, 2036. The Notes carry a 6.00% fixed interest rate, pay semi‑annually beginning November 20, 2026, and were offered at $1,000 per Note (100%).

The issuer may redeem the Notes on specified semi‑annual Optional Redemption Dates beginning May 20, 2029, with at least 5 Business Days’ notice. Proceeds are for general corporate purposes; Jefferies LLC acted as Agent and will receive underwriting compensation described in the pricing supplement.

Jefferies Financial Group Inc. is offering Senior Fixed Rate 25 Year Callable Notes due May 20, 2051 with an aggregate principal amount of $9,274,000. The Notes pay interest at 7.00% annually, are senior unsecured obligations and are callable by the issuer on each Optional Redemption Date.

The Notes are being offered at an issue price of $1,000 per Note (100%); underwriting discounts total 2.00% ($185,480) and estimated proceeds to the issuer before expenses are $9,088,520. Payments on the Notes are subject to Jefferies Financial Group Inc.'s credit risk.

Jefferies Financial Group Inc. priced $1,946,000 aggregate principal amount of Senior Fixed Rate 5 Year Callable Notes due May 20, 2031 with a 5.50% fixed coupon and an issue price of $1,000 per Note (100%). The Notes accrue interest from May 20, 2026 and pay semiannually on May 20 and November 20 beginning November 20, 2026. The offering proceeds to Jefferies before expenses are $1,936,270 after underwriting discounts and commissions, and the issuer may redeem the Notes on specified semiannual Optional Redemption Dates beginning May 20, 2027. The Notes are senior unsecured obligations, not listed, and offered subject to FINRA Rule 5121 conflict-of-interest procedures; the proceeds are for general corporate purposes.

Jefferies Financial Group Inc. is offering market-linked, auto-callable medium-term notes due June 1, 2029 with a face amount of $1,000 per security. The securities pay a monthly contingent coupon (memory feature) if the lowest-performing ETF among XLF, XLV and XLK closes at or above 75% of its starting price on a calculation day; the contingent coupon rate will be determined on the pricing date and will be at least 10.30% per annum. If an automatic call occurs on a calculation day from November 2026 through April 2029 when the lowest-performing ETF closes at or above its starting price, holders receive the face amount plus any due coupons. If not called, maturity payment depends on the lowest-performing ETF's ending price relative to a threshold equal to 70% of its starting price; a final decline below that threshold can result in losses greater than 30 of principal. Payments are subject to Jefferies' credit risk. Pricing date was May 29, 2026 and issue date is June 3, 2026.

Jefferies Financial Group Inc. is offering senior fixed rate 8‑year callable notes due May 31, 2034 with a stated interest rate of 6.00% and an issue price of $1,000 per Note. The Original Issue Date is May 29, 2026. The issuer may redeem the Notes in whole or in part on each Optional Redemption Date beginning May 31, 2027, with at least five Business Days' notice. Interest will accrue from the Original Issue Date and is payable semi‑annually on the last calendar day of May and November, beginning November 30, 2026. The Notes are senior unsecured obligations and carry the issuer's credit risk. Use of proceeds is stated as general corporate purposes.

Jefferies Financial Group Inc. is offering senior fixed rate 25 Year Callable Notes due May 29, 2051. The Notes carry a stated interest rate of 7.00%, an issue price of $1,000 per Note (100%) and an Original Issue Date of May 29, 2026. The issuer may redeem the Notes, in whole or in part, on each Optional Redemption Date beginning May 29, 2027, with at least five Business Days’ prior notice. Payments are subject to the issuer’s credit risk and the Notes will be unsecured senior obligations; use of proceeds is stated as general corporate purposes.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due May 27, 2032 linked to the worst-performing of the Nasdaq-100 Index, the Russell 2000 Index and the VanEck Semiconductor ETF. Each Note has a $1,000 stated principal amount and an Issue Price of $1,000. The Notes pay a contingent monthly coupon of $19.17 if the worst-performing underlying is at or above a 75% Coupon Barrier on a Coupon Observation Date and are automatically callable beginning about six months after pricing if the worst-performing underlying is at or above its Call Value (100% of Initial Value) on a Call Observation Date. At maturity, if the Final Value of the worst-performing underlying is below its 60% Threshold Value, the Payment at Maturity is reduced 1-for-1 with the decline in that underlying from its Initial Value, exposing investors to up to 100% principal loss. Estimated value on the Pricing Date was approximately $977.80 per Note. Payments are unsecured and subject to Jefferies’ credit risk; proceeds are for general corporate purposes.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due June 3, 2031 linked to the worst-performing of the Nasdaq-100, Russell 2000 and S&P 500 indices. The Notes have a $1,000 Stated Principal Amount and Issue Price of $1,000 per Note, with a Pricing Date of May 29, 2026 and Original Issue Date of June 3, 2026. The Notes pay a contingent semiannual coupon of $46.50 when the Worst-Performing Underlying meets or exceeds a 65% Coupon Barrier on a Coupon Observation Date and are autocallable if the Worst-Performing Underlying is at or above its Call Value on a Call Observation Date. At maturity you receive the Stated Principal Amount if the Final Value of the Worst-Performing Underlying is at or above its 65% Threshold; otherwise you suffer 1-for-1 downside exposure and could lose up to 100% of principal. Jefferies estimates the Notes’ value on the Pricing Date to be approximately $946.70 per Note. All payments are subject to Jefferies’ credit risk and certain dates and payments are subject to postponement as described in the supplement.

Jefferies Financial Group Inc. priced a $2,750,000 issuance of Senior Callable Fixed to Floating Rate Range Accrual Notes linked to the 10-Year CMT Rate, with a stated principal amount of $1,000 per note and an estimated value of $914.73 per note on the Pricing Date.

The notes pay 10.00% per annum from the Original Issue Date through May 19, 2027, then pay a monthly variable rate up to 10.00% based on the number of calendar days the 10-Year CMT Rate is <= 5.25% during each interest period. The issuer may redeem the notes annually on specified Optional Redemption Dates beginning May 19, 2027. All payments are subject to the issuer's credit risk.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes with an aggregate principal amount of $9,097,000. The notes have a stated principal of $1,000 per note, an issue price of 100%, and mature on May 17, 2032. They pay a quarterly contingent coupon of $26.50 when the worst-performing underlying index meets its coupon barrier and are autocallable beginning about one year after issuance. Payments depend on the worst-performing of the Dow Jones Industrial Average, the Russell 2000 and the S&P 500, and all payments are subject to Jefferies’ credit risk. Estimated value on the pricing date was $976.20 per note. Use of proceeds is stated as general corporate purposes.

Jefferies Financial Group Inc. is offering Senior Autocallable Buffered Leveraged Notes due May 28, 2031 linked to the worst‑performing common stock of Apple (AAPL), AMD (AMD) and Amazon (AMZN). Each Note has a $1,000 stated principal amount and an issue price of 100%. The Notes pay no interest and are automatically called if each underlying’s Observation Value on the Call Observation Date (August 24, 2026) is at or above its Call Value, producing a Call Payment of $1,202.50 per Note.

At maturity (May 28, 2031), if not called, payoff depends on the Worst‑Performing Underlying: investors receive 200.00% participation in upside above the Initial Value, full principal if the Final Value is at or above the Threshold Value (60% of Initial Value), and suffer losses if the Final Value is below the Threshold Value at a rate of approximately 1.66667% of principal for each 1% decline below the Threshold. Investors may lose up to 100% of principal. The issuer’s credit risk applies to all payments; estimated value on the Pricing Date was approximately $973.70 per Note.

Jefferies Financial Group Inc. is offering Senior Autocallable Buffered Leveraged Notes due May 28, 2031 linked to the worst-performing of Alphabet (GOOGL), Microsoft (MSFT) and Tesla (TSLA). Each Note has a $1,000 stated principal amount and an issue price of 100%. The Notes are senior unsecured obligations that pay no interest, are autocallable on the August 24, 2026 call observation date for a $1,115.00 call payment, and mature on May 28, 2031. At maturity holders receive the stated principal plus 200.00% participation in upside of the Worst-Performing Underlying if it appreciated; if the Worst-Performing Underlying falls below a 60% threshold, losses accrue at approximately 1.66667% of principal per 1% decline below that threshold (investors may lose up to 100% of principal). All payments are subject to Jefferies’ credit risk.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due June 3, 2031 linked to the worst-performing of the Dow Jones Industrial Average, the Russell 2000 and the S&P 500. Each Note has a $1,000 stated principal amount and an issue price of 100%.

The Notes pay a contingent quarterly coupon of $25.00 if the Worst-Performing Underlying is at or above its Coupon Barrier (70% of Initial Value) on each quarterly Coupon Observation Date and are automatically callable beginning on the first Call Observation Date if the Worst-Performing Underlying is at or above its Call Value (100% of Initial Value). At maturity the investor receives the principal if the Worst-Performing Underlying is at or above its Threshold Value (55% of Initial Value); otherwise the payment is 1-to-1 downside exposure to that Underlying and could result in loss of principal. Jefferies estimates the Notes' value on the Pricing Date at approximately $975.20 per Note, within $30.00 of that estimate.

Jefferies Financial Group Inc. priced Senior Autocallable Barrier Notes due June 3, 2031 linked to the worst-performing of the iShares^® MSCI Emerging Markets ETF (EEM) and the EURO STOXX 50^® Index (SX5E). The Notes have a $1,000 stated principal amount per Note, an issue price of $1,000 and semi-annual call observation dates beginning June 1, 2027. If called, investors receive the stated principal plus a specified Call Premium; call premiums range per schedule from $148.50 (first call) up to $742.50 (final listed call), reflecting an indicated approximate 14.85% per annum return on early calls. If not called, maturity payouts depend on the Final Value of the Worst-Performing Underlying versus a Threshold Value equal to 75% of the Initial Value; below threshold investors bear 1:1 downside to the Worst-Performing Underlying and may lose up to 100% of principal. All payments are subject to Jefferies credit risk; estimated value on pricing date was approximately $959.10 per Note (cover page estimate).

Jefferies Financial Group Inc. is offering senior autocallable contingent coupon barrier notes due June 3, 2031 linked to the worst-performing of the Dow Jones Industrial Average, Russell 2000 and S&P 500.

The Notes have a $1,000 stated principal per note, an issue price equal to 100% of par, contingent quarterly coupon payments of $21.25 when the worst-performing underlying is at or above a 70% coupon barrier, and an automatic call feature beginning on call observation dates approximately one year after pricing. The final payment depends on the worst-performing underlying relative to a 55% threshold on the valuation date of May 29, 2031. All payments are subject to Jefferies’ credit risk and the offering is for general corporate purposes.

Jefferies Financial Group Inc. is offering senior autocallable barrier notes due June 3, 2031 linked to the worst-performing of the iShares® MSCI Emerging Markets ETF and the EURO STOXX 50® Index. Each Note has a $1,000 stated principal amount and an estimated initial value of approximately $939.30. The Notes are automatically callable on specified semiannual Call Observation Dates beginning in 2027 if the Worst-Performing Underlying equals or exceeds 95% of its Initial Value; applicable Call Payments range from $1,130 to $1,650 per Note. At maturity, if the Worst-Performing Underlying is below 75% of its Initial Value, investors face 1-to-1 downside exposure and may lose up to the full principal. All payments are subject to Jefferies' credit risk; proceeds are for general corporate purposes.

Jefferies Financial Group Inc. filed Product Supplement No. 1 describing Global Medium-Term Notes linked to one or more indices, ETFs or baskets thereof. The supplement sets out general terms: variable Payment at Maturity formulas for Bull and Bear Notes, definitions of Initial Value, Final Value, Valuation Date and a Participation Rate, and notes that specific terms will appear in each pricing supplement.

The supplement discloses conflicts (the Calculation Agent and Agent are Jefferies affiliates), valuation and market-disruption mechanics, antidilution and rounding rules, tax uncertainty (IRS notice December 7, 2007) and potential withholding under new rules including January 1, 2027 effective 871(m) regulations. Investors receive no guaranteed principal or interest unless a pricing supplement specifies buffers, minimum payments or a maximum payment.

Jefferies Financial Group Inc. supplements its prospectus to offer Global Medium‑Term Notes linked to indices, ETFs, common equity securities or ADRs. The Notes are equity‑linked, may pay contingent or fixed coupons, can be issuer‑callable or autocallable, and do not guarantee repayment of principal at maturity. Terms including the Underlying, Pricing Date and exact payoffs will be set forth in a pricing supplement; investors face market, valuation, issuer credit and tax risks described herein.

Jefferies Financial Group Inc. updates its Product Supplement No. 2 dated May 11, 2026 for Global Medium-Term Notes, Series A—principal-at-risk securities linked to one or more equity indices, exchange-traded funds or common equity/ADSs. The securities are senior unsecured obligations of Jefferies and do not guarantee repayment of the face amount at maturity; repayment depends on the performance of the referenced Market Measure(s). The calculation agent (initially Jefferies Financial Services, Inc.) will determine closing values, make discrete anti-dilution adjustments (initial adjustment factor = 1.0) and resolve market disruption events. Certain operational thresholds are specified, including an anti-dilution adjustment de minimis of 0.10%, a replacement-stock selection rule excluding stocks with aggregate referenced exposure above 25% of ADTV, and an option-period volatility look-back of 125 trading days. Payment, calculation and postponement mechanics (including an eighth trading day final disruption backstop) are described; all payments remain subject to Jefferies’ credit risk.

Jefferies Financial Group Inc. may, from time to time, offer senior unsecured Global Medium-Term Notes, Series A, the terms of which will be set in an applicable pricing supplement. The notes may be linked to one or more equity indices, exchange-traded funds or common equity securities/ADSs and provide for repayment of principal at maturity but payments are subject to the issuer's credit risk. The notes will not be listed, will have complex features, and may require U.S. holders to recognize taxable income prior to maturity.

Jefferies Financial Group Inc. is registering up to 25,000,000 common shares for sale in an at-the-market offering through Jefferies LLC acting as sales agent. The prospectus supplement states Jefferies LLC may receive a commission of up to 3.0% of gross proceeds. As of the supplement, the company does not intend to sell any common shares under the Sales Agreement.

The offering table shows up to 229,422,673 common shares outstanding after this offering based on 204,422,673 shares outstanding as of February 28, 2026 (after deducting 116,695,397 treasury shares). The closing price on May 8, 2026 was $52.98 per share. Net proceeds, if any, are intended for general corporate purposes.

Jefferies Financial Group Inc. offers a program to issue global medium-term notes under its indenture, with specific terms set in future pricing supplements. The prospectus supplement states $6.0 billion aggregate principal amount of Series A medium-term notes outstanding as of the supplement and an authorization to issue up to $25 billion aggregate principal amount of new senior debt securities measured at issuance, effective May 11, 2026. The notes may be fixed- or floating-rate, senior or subordinated, callable or puttable, exchangeable or linked to indices, commodities, currencies or single securities; book-entry global form via DTC is the default. Terms, tax treatment and distribution mechanics will be set in each pricing supplement.

Jefferies Financial Group Inc. is offering Medium-Term Notes, Series A — equity index linked, auto-callable securities tied to the lowest performing of the Dow Jones Industrial Average, Nasdaq-100 and Russell 2000, maturing May 10, 2030. The original offering price is $1,000 per security and the total offering size shown is $1,421,000. Each security has an estimated value on the pricing date of $949.70, reflecting selling, structuring and hedging costs. The notes pay no periodic interest, may be automatically called on the first call date (May 12, 2027) for a 21.75% call premium, and otherwise return at maturity based solely on the ending level of the lowest performing index with a 175% upside participation rate and a threshold at 70% of starting levels. Holders bear full credit risk of Jefferies and may lose more than 30%, potentially all principal, if the lowest performing index falls below its threshold at maturity.

Jefferies Financial Group Inc. is offering Senior Contingent Coupon (With Memory) Barrier Notes due May 9, 2029 with an Aggregate Principal Amount of $743,000. The Notes pay a monthly contingent coupon of $6.67 per Note when the Worst-Performing Underlying (the worst of the S&P 500®, Dow Jones Industrial Average® and Nasdaq-100®) meets its Coupon Barrier on a monthly observation date. At maturity you receive the $1,000 stated principal if the Final Value of the Worst-Performing Underlying is at or above its Threshold Value; otherwise you suffer 1:1 downside below initial levels and may lose up to your principal. Jefferies estimated the Notes' value at $978.90 per Note; proceeds to the issuer before expenses are $735,941.50. All payments are subject to Jefferies' credit risk.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due May 10, 2029 with an aggregate principal amount of $1,728,000. The Notes are issued at $1,000 per note and pay a monthly contingent coupon of $7.83 per Note if the Observation Value of the Worst-Performing Underlying meets or exceeds its Coupon Barrier (80% of the Initial Value). The Notes are linked to the worst-performing of the Dow Jones Industrial Average and the S&P 500. The Notes are autocallable beginning on Call Observation Dates roughly one year after issuance; if autocalled, holders receive the stated principal plus any contingent coupon then due. At maturity, if the Worst-Performing Underlying is below its Threshold Value (75% of Initial Value), holders are exposed 1-for-1 to declines and may lose some or all principal. All payments are subject to Jefferies' credit risk; the issuer estimates the Notes' value on the Pricing Date at $980.20 per Note.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due May 17, 2032 linked to the worst-performing of the Dow Jones Industrial Average, the Russell 2000 and the S&P 500. The offering aggregates $9,097,000 at an issue price of $1,000 per note with an estimated Pricing Date value of $976.20 per note.

The notes pay a quarterly contingent coupon of $26.50 when the worst-performing underlying is at or above its coupon barrier on a coupon observation date, are autocallable on quarterly call observation dates if the worst-performing underlying is at or above its call value, and return principal at maturity only if the worst-performing underlying is at or above its threshold value; otherwise investors have 1:1 downside exposure to the worst-performing underlying.

Jefferies Financial Group Inc. is offering Senior Autocallable Contingent Coupon Barrier Notes due May 10, 2029 linked to the worst-performing of the Dow Jones Industrial Average® and the S&P 500®. Each Note has a $1,000 stated principal amount and pays a monthly contingent coupon of $7.83 when the worst-performing underlying is at or above its Coupon Barrier (80% of Initial Value) on a Coupon Observation Date. The Notes are autocallable beginning on the first Call Observation Date if the worst-performing underlying is at or above its Call Value (100% of Initial Value), in which case holders receive the stated principal plus any contingent coupon due on the Call Payment Date. At maturity, if the worst-performing underlying is below its Threshold Value (75% of Initial Value), holders suffer 1-to-1 downside exposure to declines from the Initial Value and may lose some or all principal. Payments are senior unsecured obligations of Jefferies and subject to its credit risk.

Jefferies Financial Group Inc. is offering Senior Contingent Coupon (With Memory) Barrier Notes due May 9, 2029 linked to the worst-performing of the S&P 500, Dow Jones Industrial Average and Nasdaq-100. The Notes have a $1,000 stated principal amount per Note and pay monthly contingent coupon payments of $6.67 per Note when the worst-performing underlying is at or above its coupon barrier on monthly observation dates. At maturity, if the worst-performing underlying is at or above its threshold value you receive $1,000; otherwise you bear 1-to-1 downside from the initial value and may lose up to 100% of principal. Estimated value at pricing was approximately $978.90 per Note. Payments are unsecured and subject to Jefferies credit risk.

Jefferies Financial Group Inc. offers Senior Autocallable Contingent Coupon Barrier Notes due May 18, 2028 linked to the worst-performing of the EFA, RTY and SPX. The Notes have a $1,000 stated principal amount per Note and an Issue Price of $1,000 per Note; Jefferies estimated the value on the Pricing Date at approximately $977.70. The Notes pay a quarterly contingent coupon of $30 if the worst-performing underlying is at or above a coupon barrier (75% of its initial value) on a coupon observation date, are autocallable if that underlying is at or above its call value (100% of initial) on a call observation date, and at maturity return principal only if the final value of the worst-performing underlying is at or above its threshold (70% of initial). The offering is a preliminary pricing supplement and all payments are subject to Jefferies' credit risk; the Aggregate Principal Amount is stated as blank here and may be increased prior to the Original Issue Date.

Jefferies Financial Group Inc. is offering medium-term notes — equity index linked securities — linked to the Russell 2000® Index with a pricing date of May 28, 2026, an issue date of June 2, 2026, and a stated maturity of May 31, 2030. The securities are auto-callable on specified call dates and provide a 10% buffer against index declines at maturity, subject to credit risk.

Key economic terms disclosed: original offering price $1,000 per security, estimated value on the pricing date ~$959.40, proceeds to issuer per security $974.25, agent discount $25.75. Minimum call premiums are at least 10%, 20%, 30% and 40% on successive call dates, with corresponding minimum cash payments of at least $1,100 through $1,400. If not called, holders face 1-to-1 downside beyond the 10% buffer, potentially losing up to 90% of principal at maturity.

Jefferies Financial Group Inc. has proposed a preliminary pricing supplement for Senior Autocallable Barrier Notes due May 20, 2031, linked to the worst-performing of the Russell 2000®, S&P 500® and Dow Jones Industrial Average®. The Notes have a $1,000 Stated Principal Amount and Issue Price of $1,000 per Note. They are autocallable annually beginning in 2027, carry a series of scheduled Call Premiums that reflect an approximate 13.30% per annum return when called, and provide downside exposure to declines in the Worst-Performing Underlying with a Threshold Value set at 75% of the Initial Value. Jefferies estimates the Note value on the Pricing Date at approximately $977.10 (range ± $30.00). Payments and any secondary-market value are subject to Jefferies’ credit risk and the Calculation Agent’s determinations.

Jefferies Financial Group Inc. priced $1,850,000 of Senior Fixed Coupon Buffered Notes due May 9, 2028. The notes pay a fixed monthly coupon of $15.83 per note on a $1,000 stated principal amount, are linked to the worst-performing share of LRCX, MRVL, and ZS, and repay principal at maturity only if the worst-performing underlying is at or above its 80% Threshold Value on the Valuation Date. All payments are senior unsecured and subject to Jefferies’ credit risk; the issuer estimated the notes’ value at $974.60 per note on the Pricing Date. Proceeds are for general corporate purposes.

Jefferies Financial Group Inc. is offering Senior Fixed Coupon Buffered Notes due May 9, 2028 linked to the worst-performing common stock of Lam Research (LRCX), Marvell Technology (MRVL) and Zscaler (ZS). Each Note has a Stated Principal Amount of $1,000, pays a fixed monthly coupon of $15.83, and matures on May 9, 2028. The Notes pay principal at maturity only if the Final Value of the Worst-Performing Underlying is at or above its Threshold Value (80% of Initial Value); otherwise, investors bear 1-to-1 downside from the Threshold Value and may lose up to 80% of principal. Strike Date is May 1, 2026, Pricing Date May 4, 2026, and Original Issue Date May 7, 2026. Payments are unsecured and subject to Jefferies’ credit risk. Estimated value on the Pricing Date was approximately $974.60 per Note.

Jefferies Financial Group Inc. is issuing $7,933,000 of Senior Autocallable Contingent Coupon Barrier Notes due May 5, 2031. Each Note has a $1,000 stated principal amount and was offered at 100.00% of par; Jefferies estimates the Notes' value at $976.30 per Note on the April 30, 2026 pricing date. The Notes pay contingent quarterly coupons of $25.25 when the worst-performing underlying index meets its coupon barrier, are autocallable on quarterly observation dates beginning about one year after pricing, and at maturity expose holders to 1-to-1 downside versus the worst-performing of the Dow Jones Industrial Average, Russell 2000 and S&P 500, subject to specified threshold and barrier levels.

Jefferies Financial Group Inc. is offering $3,990,000 in Senior Autocallable Contingent Coupon Barrier Notes due May 5, 2031, linked to the worst-performing of the Dow Jones Industrial Average®, the Russell 2000® and the S&P 500®. The notes have a $1,000 stated principal amount and an issue price of 100%. They pay a quarterly contingent coupon of $21.50 if the worst-performing underlying meets its coupon barrier on each quarterly observation date, are autocallable on quarterly call observation dates if the worst-performing underlying is at or above its call value, and provide principal protection only if the worst-performing underlying at the valuation date is at or above its threshold value; otherwise investors face 1-to-1 downside to the worst-performing underlying. Estimated value on the pricing date was $956.10 per note. Proceeds are for general corporate purposes and the offering is subject to FINRA Rule 5121 conflict-of-interest provisions.

Jefferies Financial Group Inc. priced Market‑Linked Medium‑Term Notes—auto‑callable, equity‑index linked securities with a $1,000 face amount per security and an original offering price of $1,000 per security. The offering totals $3,631,000.

The notes are linked to the lowest performing of the S&P 500, Russell 2000 and Dow Jones Industrial Average. They pay no interest, are subject to automatic early call (with fixed call premiums rising to 48.80% at the final calculation day), and expose holders to full downside on the lowest performing Index below a 75% threshold. Jefferies estimates the securities' value on the pricing date at $958.80 per security; proceeds to the issuer per security are $974.25.

Jefferies Financial Group Inc. is offering Medium-Term Notes — equity index linked securities — tied to the S&P 500® Index with a stated maturity date of November 2, 2028. Each security has a face amount of $1,000 and an original offering price of $1,000. The securities provide (1) upside participation of 100% in index gains subject to a 27.00% maximum return (maximum maturity payment $1,270.00), (2) an absolute-value positive return if the Index declines up to a 15% buffer, and (3) 1-to-1 downside exposure to Index declines beyond the 15% buffer (investors may lose up to 85% of face amount). The pricing date estimated value was $962.60 per security and proceeds to the issuer were $974.25 per security. All payments are subject to Jefferies' credit risk; the securities pay no periodic interest and are designed to be held to maturity.

Jefferies Financial Group Inc. priced a preliminary offering of Medium-Term Notes, Series A — equity index linked, auto-callable securities linked to the lowest performing of the Dow Jones Industrial Average, the Nasdaq-100 and the Russell 2000. The notes have a $1,000 face amount, a stated maturity of May 10, 2030, and an automatic call feature beginning on May 12, 2027. If not called, the maturity payment depends on the lowest performing Index: full upside participation at a 175% participation rate when the ending level exceeds the starting level, return of principal if the ending level stays above the 70% threshold, and 1-to-1 downside exposure 30% possible) if the ending level falls below that threshold. The preliminary estimated value on the pricing date is approximately $957.30 per $1,000 security and the issuer will receive $974.25 in proceeds per security after agent discounts. The securities are senior unsecured obligations of Jefferies and carry issuer credit risk; tax treatment is described as uncertain and holders should consult advisors.