{"url_path":"/sec/adxn/10-k/2026/item-16c","section_key":"item-16c","section_title":"Item 16C Principal Accountant Fees and Services.","topic":"sec","document":{"doc_type":"20-F","doc_date":"2026-05-15","source_url":"https://www.sec.gov/Archives/edgar/data/1574232/0001104659-26-062447-index.html","accession_number":"0001104659-26-062447","cik":"0001574232","ticker":"ADXN","issuer_name":"Addex Therapeutics Ltd.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1574232/0001104659-26-062447-index.html","primary_entity_key":"0001574232","primary_entity_name":"Addex Therapeutics Ltd."},"word_count":263,"has_tables":true,"body_markdown":"Item 16C. Principal Accountant Fees and Services.\n\nBDO AG has served as our independent registered public accounting firm for the 2025 and 2024 fiscal years. Our accountants billed the following fees to us for professional services in each of those fiscal years:\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n**For the years**\n\n​\n\n​\n\n**ended**\n\n​\n\n​\n\n**December 31, **\n\n​\n\n**  ​ ​ ​**\n\n**2025**\n\n**  ​ ​ ​**\n\n**2024**\n\n​\n\n** **\n\n**(CHF in thousands)**\n\nAudit Fees\n\n \n\n289\n\n \n\n309\n\nAudit‑Related fees\n\n \n\n45\n\n \n\n38\n\n**Total**\n\n \n\n**334**\n\n \n\n**347**\n\n​\n\n“*Audit Fees*” consist of fees billed for the annual audit of our consolidated financial statements, and the statutory audit of our consolidated and stand-alone financial statements. Audit Fees also include services that only our independent external auditor can reasonably provide, such as the review of documents filed with the U.S. stock exchange.\n\n“*Audit-Related Fees*” consist of fees billed for assurance and related services that are reasonably related to the performance of the audit or review of its financial statements or that are traditionally performed by the external auditor, and mainly include services such as comfort letters issued in connection with securities offerings, due diligence and agreed-upon or expanded audit procedures.\n\n“*Tax Fees*” consist of tax consultations, such as advice in connection with employees’ taxation arising from share-based compensation.\n\n“*Other Fees*” consist of advisory services relating to the adoption or application of IFRS Accounting Standards.\n\nAudit and Non-Audit Services Pre-Approval Policy\n\nTo ensure the independence and objectivity of our external auditors, the provision of all non-audit services by the external auditors are pre- approved by our audit committee.\n\n​"}