JEF / Jefferies Financial Group Inc. - SEC Filings, Annual Report, Proxy Statement

Jefferies Financial Group Inc.
US ˙ NYSE ˙ US47233W1099

Basic Stats
LEI 549300HOF34RGOJ5YL07
CIK 96223
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Jefferies Financial Group Inc.
SEC Filings (Chronological Order)
This page provides a complete, chronological list of SEC Filings, excluding ownership filings which we provide elsewhere.
September 5, 2025 424B2

$1,014,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,014,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russel

September 5, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 5, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

September 4, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

September 4, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

September 4, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

September 4, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 10, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 SUBJECT TO

September 4, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

September 4, 2025 FWP

$1,000; or

Filed Pursuant to Rule 433 Registration Statement No. 333- 271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities— Auto-Callable with Fixed Percentage Buffered Downside Principal at Risk Securities Linked to the NASDAQ-100 Index® due October 4, 2029 Term Sheet to Preliminary Pricing Supplement dated September 4, 2025 Summary of Terms Issuer: Jefferies Financial Gro

September 4, 2025 FWP

$1,000; or

Filed Pursuant to Rule 433 Registration Statement No. 333-271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities— Auto-Callable with Fixed Coupon and Contingent Downside Principal at Risk Securities Linked to the Lowest Performing of the S&P 500® Index, the Russell 2000® Index and the NASDAQ-100 Index® due September 13, 2028 Term Sheet to Amendment No. 1 to Prelimi

September 4, 2025 FWP

$1,000 plus the lesser of: (i) $1,000 × basket return × upside participation rate; and (ii) the maximum return;

Filed Pursuant to Rule 433 Registration Statement No. 333- 271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities—Leveraged Upside Participation to a Cap and Fixed Percentage Buffered Downside Principal at Risk Securities Linked to an Index Basket due September 10, 2027 Term Sheet to Preliminary Pricing Supplement dated September 4, 2025 Summary of Terms Issuer: Je

September 3, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 3, 2025 424B2

$4,255,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $4,255,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russel

September 3, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $568,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Notes due September 4, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index The Senior

September 3, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 3, 2025 424B2

$5,291,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Notes due September 4, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $5,291,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Notes due September 4, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index The Senio

September 3, 2025 424B2

$10,462,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $10,462,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russe

September 3, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 3, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 3, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 3, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 3, 2025 424B2

$13,435,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the EURO STOXX 50 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $13,435,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Ru

September 3, 2025 424B2

$2,400,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,400,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the VanEck® Semiconductor ETF,

September 2, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

September 2, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due September 16, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

September 2, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,990,000 Jefferies Jefferies Financial

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,990,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 3, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Rus

September 2, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due September 16, 2045

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $12,135,000

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $12,135,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 29, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russ

August 29, 2025 424B2

$170,000 Jefferies Financial Group Inc. Senior Leveraged Barrier Notes due August 29, 2030 Linked to the Worst-Performing of the S&P 500® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 1, dated May 18, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $170,000 Jefferies Jefferies Financial Group Inc. Senior Leveraged Barrier Notes due August 29, 2030 Linked to the Worst-Performing of the S&P 500® Index and the Dow Jones Industrial Average® Th

August 29, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $10,111,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the S&P 500® Index, the Russe

August 29, 2025 FWP

$1,000 plus the lesser of: (i) $1,000 × index return × upside participation rate; and (ii) the maximum return;

Filed Pursuant to Rule 433 Registration Statement No. 333- 271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities—Leveraged Upside Participation to a Cap and Fixed Percentage Buffered Downside Principal at Risk Securities Linked to the Nasdaq-100 Index® due October 5, 2027 Term Sheet to Preliminary Pricing Supplement dated August 29, 2025 Summary of Terms Issuers:

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 424B2

$3,091,000 Jefferies Financial Group Inc. Senior Fixed Rate 15 Year Callable Notes due August 31, 2040

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,091,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 15 Year Callable Notes due August 31, 2040 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right,

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Buffered Notes due August 29, 20

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $349,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Buffered Notes due August 29, 2031 Linked to the Worst-Performing of the Utilities Select Sector SPDR®

August 29, 2025 424B2

$3,220,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 29, 2031 Linked to the Worst-Performing of the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,220,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 29, 2031 Linked to the Worst-Performing of the Russell 2000® Index and the

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 424B2

Wells Fargo Securities

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

August 29, 2025 424B2

$7,769,000 Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 31, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $7,769,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 31, 2035 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right,

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 29, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 29, 203

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,148,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 29, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russe

August 29, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 28, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Notes due September 24, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 28, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

August 28, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 24, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 28, 2025 FWP

$1,000; or

Filed Pursuant to Rule 433 Registration Statement No. 333-271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities— Auto-Callable with Fixed Coupon and Contingent Downside Principal at Risk Securities Linked to the Lowest Performing of the S&P 500® Index, the Russell 2000® Index and the NASDAQ-100 Index® due August 31, 2028 Term Sheet to Preliminary Pricing Supplemen

August 28, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 24, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 28, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Notes due September 24, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 27, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 10, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 26, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 26, 2025 424B2

$3,290,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 27, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,290,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 27, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, t

August 25, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 21, 2025 424B2

$2,427,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon (With Memory) Barrier Notes due August 22, 2030 Linked to the Worst-Performing of the Common Stock of Fifth Third Bancorp, the Common Shares of KeyCorp, the Com

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,427,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon (With Memory) Barrier Notes due August 22, 2030 Linked to the Worst-Performing of the Common Stock o

August 21, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 20, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 20, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 AMENDMENT NO. 1 TO PRICING SUPPLEMENT dated August 15, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Equity Linked Securities Market Linked Securities— Upside Participation to a Cap and Partial Pr

August 20, 2025 424B2

$2,597,000 Jefferies Financial Group Inc. Senior Contingent Coupon Barrier Notes due August 20, 2029 Linked to the Worst-Performing of the S&P 500® Index and the Russell 2000® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 AMENDMENT NO. 1 TO PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,597,000 Jefferies Jefferies Financial Group Inc. Senior Contingent Coupon Barrier Notes due August 20, 2029 Linked to the Worst-Performing of the S&P 500® Index and the

August 20, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 19, 2025 424B2

$2,597,000 Jefferies Financial Group Inc. Senior Contingent Coupon Barrier Notes due August 20, 2029 Linked to the Worst-Performing of the S&P 500® Index and the Russell 2000® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,597,000 Jefferies Jefferies Financial Group Inc. Senior Contingent Coupon Barrier Notes due August 20, 2029 Linked to the Worst-Performing of the S&P 500® Index and the Russell 2000® Inde

August 19, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 19, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT dated July 29, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Equity Linked Securities Market Linked Securities— Upside Participation to a Cap and Partial Principal Return at Mat

August 19, 2025 424B2

$5,803,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $5,803,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell

August 19, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 19, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 19, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 19, 2025 424B2

$8,685,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $8,685,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell

August 19, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $6,940,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, t

August 19, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 19, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 27, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 18, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon (With Memory) Barrier Notes due August 22, 2030 Linked to the Worst-Performing of the Common Stock of Fifth Third Bancorp, the Common Shares of KeyCorp, the Common Stock

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 15, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 15, 2025 424B2

$4,423,000 Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 15, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $4,423,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 15, 2035 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right,

August 15, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 31, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

August 15, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 15 Year Callable Notes due August 31, 2040

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 SUBJECT TO

August 15, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 15, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 15, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 15, 2025 424B2

$2,137,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 16, 2030 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,137,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 16, 2030 Linked to the Worst-Performing of the Russell 2000® Index and the

August 14, 2025 424B2

$1,838,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 15, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,838,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 15, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russe

August 14, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 14, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 14, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 14, 2025 424B2

PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $10,907,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 12 Year Callable Notes due August 15, 2037

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $10,907,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 12 Year Callable Notes due August 15, 2037 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right,

August 14, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 14, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 14, 2025 424B2

$25,004,000 Jefferies Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due August 17, 2028 Linked to the S&P 500® Index

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 1, dated May 18, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $25,004,000 Jefferies Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due August 17, 2028 Linked to the S&P 500® Index The Senior Capped Buffered Leveraged Notes due August

August 14, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 14, 2025 424B2

$6,033,000 Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due August 15, 2045

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $6,033,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due August 15, 2045 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right,

August 14, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Notes due September 4, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 14, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 12, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 13, 203

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $6,000,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 13, 2031 Linked to the Worst-Performing of the S&P 500® Index, the Russell

August 12, 2025 424B2

$2,500,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 13, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,500,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 13, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russe

August 12, 2025 424B2

$ Jefferies Financial Group Inc. Senior Contingent Coupon Barrier Notes due August 20, 2029 Linked to the Worst-Performing of the S&P 500® Index and the Russell 2000® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 12, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 12, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 12, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 15, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 11, 2025 424B2

$1,220,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 12, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,220,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 12, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, t

August 11, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 8, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 16, 2030 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 8, 2025 424B2

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jur

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 8, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due September 4, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the EURO STOXX 50 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 8, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 13, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 7, 2025 424B2

Original Offering Price

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT dated August 5, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Market Linked Securities— Auto-Callable with Contingent Coupon and Contingent Downside Principal at Risk Securities

August 7, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 7, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 7, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due August 17, 2028 Linked to the S&P 500® Index

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 7, 2025 424B2

$5,000,000 Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 8, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $5,000,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 8, 2035 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right, t

August 7, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Fixed Rate 1 Year Callable Notes due August 11, 2026

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $700,000,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 1 Year Callable Notes due August 11, 2026 We have the right to redeem the Notes, in whole or in part, on the Optional Redemption Date. Subject to our redemption right,

August 7, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 6, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

August 6, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 6, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 15, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

August 6, 2025 424B2

PRELIMINARY PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) SUBJECT TO COMPLETION, DATED August 5, 2025 Jefferies Financial Group Inc. Senior Autocal

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 5, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 5, 2025 424B2

$2,068,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,068,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, th

August 5, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 8, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

August 5, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030

Filed Pursuant to Rule 424(b)(2) Registration Statement No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,743,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the

August 5, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 5, 2025 424B2

$13,114,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the EURO STOXX 50 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $13,114,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russe

August 5, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 5, 2025 424B2

$6,251,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $6,251,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2

August 5, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 4, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $500,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 5, 2030 Linked to the Worst-Performing of the SPDR® EURO STOXX 50® ETF, the R

August 4, 2025 424B2

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jur

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 4, 2025 424B2

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jur

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 4, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT dated July 31, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Market Linked Securities— Auto-Callable with Contingent Coupon and Contingent Downside Principal at Risk Securities

August 4, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 4, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 4, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due August 15, 2045

The information in this preliminary pricing supplement is not complete and may be changed without notice.

August 4, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT dated July 31, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Equity Index Linked Securities Market Linked Securities—Upside Participation to a Cap with Contingent Absolute Retur

August 4, 2025 424B2

AMENDMENT NO. 1 TO PRELIMINARY PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) SUBJECT TO COMPLETION, DATED August 4, 2025 $ Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 12 Year Callabl

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jurisdiction where the offering is not permitted. AMENDMENT NO. 1 TO PRELIMINARY PRICING SUP

August 4, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 12, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 4, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

August 1, 2025 424B2

PRELIMINARY PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) SUBJECT TO COMPLETION, DATED August 1, 2025 Jefferies Financial Group Inc. Senior Autocal

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 1, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 29, 2031 Linked to the Worst-Performing of the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

August 1, 2025 424B2

$ Jefferies Financial Group Inc. Senior Leveraged Barrier Notes due August 29, 2030 Linked to the Worst-Performing of the S&P 500® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 31, 2025 424B2

Original Offering Price

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

July 31, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 31, 2025 FWP

$1,000; or

Filed Pursuant to Rule 433 Registration Statement No. 333-271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities— Auto-Callable with Contingent Coupon and Contingent Downside Principal at Risk Securities Linked to the Lowest Performing of the Common Stock of Broadcom Inc., the Common Stock of Micron Technology, Inc. and the Common Stock of Intel Corporation due Aug

July 31, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 31, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 20, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 30, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,464,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $5,938,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Russell 2000® Index and the EU

July 30, 2025 424B2

PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023)

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $7,245,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell

July 30, 2025 424B2

$1,345,000 Jefferies Financial Group Inc. Senior Leveraged Barrier Notes due July 31, 2030 Linked to the Worst-Performing of the S&P 500® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 1, dated May 18, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,345,000 Jefferies Jefferies Financial Group Inc. Senior Leveraged Barrier Notes due July 31, 2030 Linked to the Worst-Performing of the S&P 500® Index and the Dow Jones Industrial Average® Th

July 30, 2025 424B2

$22,693,000 Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due July 31, 2035

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $22,693,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due July 31, 2035 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right, t

July 30, 2025 424B2

PRELIMINARY PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) SUBJECT TO COMPLETION, DATED July 29, 2025 $ Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due August 1

The information in this preliminary pricing supplement is not complete and may be changed without notice.

July 30, 2025 424B2

$863,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Buffered Notes due July 31, 2030 Linked to the Worst-Performing of the Utilities Select Sector SPDR® Fund and the S&P 500® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $863,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Buffered Notes due July 31, 2030 Linked to the Worst-Performing of the Utilities Select Sector SPDR® F

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 1, dated May 18, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Capped

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 1, dated May 18, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,505,000 Jefferies Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due July 31, 2028 Linked to the iShares® Bitcoin Trust ETF The Senior Capped Buffered Leveraged Notes d

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

$6,412,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 1, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $6,412,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 1, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

$1,444,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the EURO STOXX 50 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,444,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Co

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,945,000 Jefferies Jefferies Financial Group Inc. Senior Contingent Coupon Barrier Notes due July 31, 2026 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $4,636,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Russell 2000® Index and the Na

July 30, 2025 424B2

$9,818,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due July 31, 2045

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $9,818,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due July 31, 2045 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right, th

July 30, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 30, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due August 15, 2045

The information in this preliminary pricing supplement is not complete and may be changed without notice.

July 29, 2025 424B2

Original Offering Price

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT dated July 25, 2025 (To Product Supplement No. 3 dated September 28, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Market Linked Notes— Auto-Callable with Contingent Coupon and Principal Return at Maturity Notes Linked to the

July 29, 2025 424B2

$9,135,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $9,135,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 20

July 29, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 29, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

July 29, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 29, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 29, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 29, 2025 FWP

1

Filed Pursuant to Rule 433 Registration Statement No. 333-271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities—Upside Participation to a Cap and Partial Principal Return at Maturity Principal at Risk Securities Linked to the Common Stock of Amazon.com, Inc. due August 18, 2028 Term Sheet to Preliminary Pricing Supplement dated July 29, 2025 Summary of Terms Issue

July 29, 2025 424B2

$2,500,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,500,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the

July 29, 2025 424B2

$2,609,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,609,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 20

July 28, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 25, 2025 424B2

$3,500,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 26, 2029 Linked to the Worst-Performing of the Common Stock of The Boeing Company, the Common Stock of RTX Corporation and the Common Stock of GE V

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,500,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 26, 2029 Linked to the Worst-Performing of the Common Stock of The Boeing Com

July 25, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 25, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 25, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 25, 2025 424B2

$10,754,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2031 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $10,754,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2031 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2

July 23, 2025 424B2

SUBJECT TO COMPLETION, DATED July 22, 2025

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 23, 2025 424B2

$3,947,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 23, 2030 Linked to the Worst-Performing of the iShares® U.S. Home Construction ETF, the VanEck® Oil Services ETF and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,947,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 23, 2030 Linked to the Worst-Performing of the iShares® U.S. Home Constructio

July 23, 2025 424B2

$1,234,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 24, 2030 Linked to the Worst-Performing of the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,234,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 24, 2030 Linked to the Worst-Performing of the Russell 2000® Index and the Na

July 23, 2025 424B2

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jur

Filed Pursuant to Rule 424(b)(2) Registration Statement No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 (

July 23, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 26, 2029 Linked to the Worst-Performing of the Common Stock of The Boeing Company, the Common Stock of RTX Corporation and the Common Stock of GE Vernova In

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 23, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 23, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 23, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 6, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 22, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due August 1, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 22, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 22, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 22, 2025 424B2

$2,508,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 23, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,508,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 23, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the

July 18, 2025 424B2

Original Offering Price

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT dated July 16, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Market Linked Securities— Auto-Callable with Contingent Coupon and Contingent Downside Principal at Risk Securities

July 18, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 18, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 17, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 17, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 17, 2025 424B2

$450,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 18, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $450,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 18, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000

July 17, 2025 424B2

$3,445,000 Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due July 18, 2028 Linked to the iShares® Bitcoin Trust ETF

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 1, dated May 18, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $3,445,000 Jefferies Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due July 18, 2028 Linked to the iShares® Bitcoin Trust ETF The Senior Capped Buffered Leveraged Notes d

July 17, 2025 424B2

$6,212,000 Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due July 18, 2045

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $6,212,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due July 18, 2045 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right, th

July 17, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 17, 2025 424B2

$ Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due July 31, 2035

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

July 17, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 17, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 31, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the EURO STOXX 50 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 17, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 20 Year Callable Notes due July 31, 2045

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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 Prospec

July 17, 2025 424B2

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due July 18, 2035

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $12,280,000 Jefferies Jefferies Financial Group Inc. Senior Fixed Rate 10 Year Callable Notes due July 18, 2035 We have the right to redeem the Notes, in whole or in part, on each Optional Redemption Date. Subject to our redemption right, t

July 17, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 23, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 15, 2025 424B2

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 18, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 15, 2025 424B2

$500,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $500,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the R

July 15, 2025 424B2

$1,419,000 Jefferies Financial Group Inc. Senior Autocallable Notes due July 16, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,419,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Notes due July 16, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index The Senior Au

July 15, 2025 424B2

$4,616,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $4,616,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 20

July 15, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 15, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 15, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 15, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 15, 2025 424B2

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,855,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Notes due July 16, 2029 Linked to the Worst-Performing of the Russell 2000® Index and the S&P 500® Index The Senior Au

July 15, 2025 424B2

$9,055,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $9,055,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 20

July 15, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 14, 2025 FWP

2

Filed Pursuant to Rule 433 Registration Statement No. 333-271881 Jefferies Financial Group Inc. Market Linked Notes Market Linked Notes— Auto-Callable with Contingent Coupon and Principal Return at Maturity Notes Linked to the Lowest Performing of the Class A Common Stock of DraftKings Inc., the Class A Common Stock of CrowdStrike Holdings, Inc., the Common Stock of Constellation Energy Corporatio

July 14, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 23, 2030 Linked to the Worst-Performing of the iShares® U.S. Home Construction ETF, the VanEck® Oil Services ETF and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 11, 2025 424B2

Original Offering Price

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

July 10, 2025 424B2

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jur

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 10, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 10, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 10, 2025 424B2

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 30, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 10, 2025 424B5

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Senior Au

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $2,000,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 11, 2030 Linked to the Worst-Performing of the S&P 500® Index, the Russell 20

July 9, 2025 FWP

$1,000; or

Filed Pursuant to Rule 433 Registration Statement No. 333- 271881 Jefferies Financial Group Inc. Market Linked Securities Market Linked Securities— Auto-Callable with Contingent Coupon and Contingent Downside Principal at Risk Securities Linked to the Lowest Performing of the Utilities Select Sector SPDR® Fund, the SPDR® S&P Regional Banking ETF and the SPDR® S&P Biotech ETF due July 19, 2029 Term

July 9, 2025 424B5

The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a solicitation of an offer to buy these securities, in any jur

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 9, 2025 10-Q

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-05721 Jefferies Financial Group

July 9, 2025 424B5

Original Offering Price

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying product supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the off

July 8, 2025 424B5

$ Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 16, 2030 Linked to the Worst-Performing of the VanEck® Semiconductor ETF, the Russell 2000® Index and the Nasdaq-100 Index®

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 8, 2025 424B2

$ Jefferies Financial Group Inc. Senior Capped Buffered Leveraged Notes due July 18, 2028 Linked to the iShares® Bitcoin Trust ETF

Filed pursuant to Rule 424(b)(2) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 8, 2025 424B5

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 7, 2025 424B5

PRELIMINARY PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) SUBJECT TO COMPLETION, DATED July 7, 2025 Jefferies Financial Group Inc. Senior Autocalla

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 7, 2025 424B5

PRELIMINARY PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023)

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 3, 2025 424B5

$ Jefferies Financial Group Inc. Senior Leveraged Barrier Notes due July 31, 2030 Linked to the Worst-Performing of the S&P 500® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 3, 2025 424B5

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 3, 2025 424B5

Filed pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer to sell these securities, nor a

Filed pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 3, 2025 424B5

$ Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Buffered Notes due July 31, 2030 Linked to the Worst-Performing of the Utilities Select Sector SPDR® Fund and the S&P 500® Index

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 The information in this preliminary pricing supplement is not complete and may be changed without notice. This preliminary pricing supplement is not an offer 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

July 2, 2025 424B5

Original Offering Price

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 PRICING SUPPLEMENT dated June 30, 2025 (To Product Supplement No. 2 dated June 30, 2023 Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) Jefferies Financial Group Inc. Medium-Term Notes, Series A Equity Index Linked Securities Market Linked Securities— Auto-Callable with Contingent Coupon and Contingent Downsid

July 2, 2025 424B5

$1,512,000 Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 3, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell 2000® Index and the Dow Jones Industrial Average®

Filed Pursuant to Rule 424(b)(5) Registration No. 333-271881 PRICING SUPPLEMENT (to Product Supplement no. 5, dated October 23, 2023, Prospectus Supplement dated May 12, 2023 and Prospectus dated May 12, 2023) $1,512,000 Jefferies Jefferies Financial Group Inc. Senior Autocallable Contingent Coupon Barrier Notes due July 3, 2031 Linked to the Worst-Performing of the Nasdaq-100 Index®, the Russell

July 2, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

July 2, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Jefferies Financial Group Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effe

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