Jefferies Financial Group Inc. 10-Q

Item 5. Other Information Rule 10b5-1 Trading Plans During the three months ended August 31, 2026, no directors or executive officers entered into, modified or terminated , contracts, instructions or written plans for the sale or purchase of the Company’s securities that were intended to satisfy the affirmative defense conditions of Rule 10b5-1. Item 6. Exhibits Exhibit No. Description 3.1 Restated Certificate of Incorporation of Jefferies Financial Group Inc. is incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed on March 31, 2026. * 31.1 Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.2 Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 32.1 Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. ** 32.2 Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. ** 101 Interactive Data Files pursuant to Rule 405 of Regulation S-T, formatted in Inline Extensible Business Reporting Language (iXBRL). 104 Cover page interactive data file pursuant to Rule 406 of Regulation S-T, formatted in iXBRL (included in exhibit 101) * Incorporated by reference. ** Furnished herewith pursuant to item 601(b) (32) of Regulation S-K. 68 Jefferies Financial Group Inc. Signatures Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Jefferies Financial Group Inc. /s/ MATT LARSON Matt Larson Executive Vice President and Chief Financial Officer Dated: October 9, 2026 August 2026 Form 10-Q 69