{"url_path":"/sec/cik-0000899394/10-q/2026/item-6","section_key":"item-6","section_title":"Item 6 Exhibits","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-06-29","source_url":"https://www.sec.gov/Archives/edgar/data/899394/0000899394-26-000028-index.html","accession_number":"0000899394-26-000028","cik":"0000899394","ticker":null,"issuer_name":"HARBOR DIVERSIFIED, INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/899394/0000899394-26-000028-index.html","primary_entity_key":"0000899394","primary_entity_name":"HARBOR DIVERSIFIED, INC."},"word_count":329,"has_tables":true,"body_markdown":"Item 6. Exhibits\n\nIncorporated by Reference\n\nExhibit\n\nNumber\nExhibit DescriptionForm\nFile\n\nNo.\nExhibit\nFiling\n\nDate\n\nProvided\n\nHerewith\n\n31.1*\n[Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](hrbr-20250331xex311.htm)\nX\n\n31.2*\n[Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](hrbr-20250331xex312.htm)\nX\n\n32.1**\n[Certifications of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](hrbr-20250331xex321.htm)\nX\n\n101.INSInline 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\n\n101.SCHInline XBRL Taxonomy Extension Schema Document.X\n\n101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document.X\n\n101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document.X\n\n101.LABInline XBRL Taxonomy Extension Label Linkbase Document.X\n\n101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document.X\n\n104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).\n\n*Filed herewith.\n\n**The certifications attached as Exhibit 32.1 accompany this Quarterly Report on Form 10-Q pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, shall not be deemed “filed” by the registrant for purposes of Section 18 of the Exchange Act, and shall not be incorporated by reference into any of the registrant’s filings under the Securities Act or the Exchange Act, whether made before or after the date of this Quarterly Report, irrespective of any general incorporation language contained in any such filing.\n\n40\n\n[Table of Contents](#i87024d546edd4c658b1166ccbd594d6d_7)\n\nSIGNATURES\n\nPursuant 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.\n\nHARBOR DIVERSIFIED, INC.\n\nDate: June 26, 2026\nBy:\n/s/ Christine R. Deister\n\nChristine R. Deister\n\nChief Executive Officer and Secretary\n\n(Principal Executive Officer)\n\nDate: June 26, 2026\nBy:\n/s/ Gregg Garvey\n\nGregg Garvey\n\nExecutive Vice President, Chief Financial Officer and Treasurer\n\n(Principal Financial and Accounting Officer)\n\n41"}