{"url_path":"/sec/iosp/10-q/2026/item-6","section_key":"item-6","section_title":"Item 6 Exhibits","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-08","source_url":"https://www.sec.gov/Archives/edgar/data/1054905/0001193125-26-213510-index.html","accession_number":"0001193125-26-213510","cik":"0001054905","ticker":"IOSP","issuer_name":"INNOSPEC INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1054905/0001193125-26-213510-index.html","primary_entity_key":"0001054905","primary_entity_name":"INNOSPEC INC."},"word_count":188,"has_tables":true,"body_markdown":"## Item 6 Exhibits\n\n \n\n \n\n31.1\n\n \n\n[Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](iosp-ex31_1.htm)\n\n31.2\n\n \n\n[Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](iosp-ex31_2.htm)\n\n32.1\n\n \n\n[Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](iosp-ex32_1.htm)\n\n32.2\n\n \n\n[Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](iosp-ex32_2.htm)\n\n101\n\n \n\nXBRL Instance Document and Related Item - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.\n\n104\n\n \n\nCover Page Interactive Data File – The cover page XBRL tags are embedded within the inline XBRL document.\n\n \n\n27\n\n \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\n \n\n \n\n \n\n \n\nINNOSPEC INC.\n\n \n\n## Registrant\n\n \n\n \n\n \n\n \n\nDate: May 8, 2026\n\nBy\n\n \n\n /s/ PATRICK S. WILLIAMS\n\n \n\n \n\n \n\n## Patrick S. Williams\n\n## President and Chief Executive Officer\n\n \n\n \n\n \n\n##  \n\nDate: May 8, 2026\n\nBy\n\n \n\n## /s/ IAN P. CLEMINSON\n\n \n\n \n\n \n\n## Ian P. Cleminson\n\nExecutive Vice President and Chief Financial Officer\n\n \n\n28"}