2.Basis of preparation

Going concern

The Company believes that it will be able to meet all of its obligations as they fall due for at least 12 months from the filing date of this Form 20-F, after considering the Company’s cash position of CHF 26.8 million and short-term financial assets of CHF 64.6 million as of December 31, 2025. Hence, these consolidated financial statements have been prepared on a going-concern basis.

To date, the Company has financed its cash requirements primarily from its public offerings, share issuances, contract revenues from option, license and collaboration agreements (OLCAs) and grants. The Company is a clinical stage company and is exposed to all the risks inherent to establishing a business. Inherent to the Company’s business are various risks and uncertainties, including the substantial uncertainty as to whether current projects will succeed and our ability to raise additional capital as needed. These risks may require us to take certain measures such as delaying, reducing or eliminating certain programs. The Company’s success may depend in part upon its ability to (i) establish and maintain a strong patent position and protection, (ii) enter into collaborations with partners in the pharmaceutical and biopharmaceutical industries, (iii) successfully move its product candidates through clinical development, (iv) attract and retain key personnel and (v) acquire capital to support its operations.

Statement of compliance

The consolidated financial statements have been prepared in accordance with IFRS Accounting Standards (IFRS) as issued by the International Accounting Standards Board (IASB). These consolidated financial statements were approved for issue by the Board of Directors on March 11, 2026.

Basis of measurement

The consolidated financial statements have been prepared under the historical cost convention except for items that are required to be accounted for at fair value.