REPUBLIC AIRWAYS HOLDINGS INC. 10-Q

Item 5. Other Information Rule 10b5-1 Plan Trading Arrangements During the three months ended June 30, 2026 , none of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted , terminated , or modified a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as such terms are defined in Item 408 of Regulation S-K). Item 6. Exhibits References under the caption “Incorporated by Reference” to exhibits or other filings indicate that the exhibit or other filing has been filed, that the indexed exhibit and the exhibit referred to are the same and that the exhibit referred to is incorporated by reference. 37 Table of Contents Incorporated by Reference Exhibit Number Exhibit Description Form Date Filed Number Filed Herewith 2.1 Merger Agreement, dated April 4, 2025, between Mesa Air Group, Inc. and Republic Airways Holdings, Inc. 8-K April 8, 2025 2.1 3.1 Delaware Certificate of Incorporation, as filed with the Secretary of State of Delaware, effective November 25, 2025 (annexed to Certificate of Merger) 8-K/A December 18, 2025 3.1 3.2 Bylaws of Republic Airways Holdings Inc. 8-K December 1, 2025 3.5 10.1# Form of Restricted Stock Unit Grant Notice and Agreement under the Republic Airways Holdings Inc. 2025 Equity Incentive Plan (directors) 10-Q May 1, 2026 10.1 10.2# Form of Restricted Stock Unit Grant Notice and Agreement under the Republic Airways Holdings Inc. 2025 Equity Incentive Plan 8-K June 17, 2026 10.1 31.1 Certification of Principal Executive Officer, pursuant to Rules 13a-14(a)/15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 X 31.2 Certification of Principal Financial Officer, pursuant to Rules 13a-14(a)/15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 X 32.1 Certification of Principal Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 X 32.2 Certification of Principal Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 X 101.INS Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document X 101.SCH Inline XBRL Taxonomy Extension Schema Document X 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document X 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document X 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document X 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document X 104 Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101) X # Management contract or compensatory plan. The agreements and other documents filed as exhibits to this Report are not intended to provide factual information or other disclosure other than with respect to the terms of the agreements or other documents themselves, and you should not rely on them for that purpose. In particular, any representations and warranties made by us in these agreements or other documents were made solely within the specific context of the relevant agreement or document and may not describe the actual state of affairs as of the date they were made or at any other time. 38 Table of Contents SIGNATURES Pursuant to the requirements 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. Republic Airways Holdings Inc. Date: July 31, 2026 By: /s/ Joseph P. Allman Joseph P. Allman Executive Vice President and Chief Financial Officer (Duly Authorized Officer and Principal Financial Officer) 39