Basis of Opinion

an electronic copy of the Prospectus Supplement;

an electronic copy of the articles of association (statuts) of the Company, dated November 5, 2025 (the “Articles”);

an electronic excerpt from the Commercial Register of the Canton of Vaud (the “Commercial Register Excerpt”) regarding the Company, dated June 17, 2026; and

an electronic copy of the resolutions of the board of directors of the Company (the “Board of Directors”) dated June 16, 2026, approving, among other things, the filing of the Prospectus Supplement with the SEC (the “Board Resolutions”).

Assumptions

the information set out in the Documents is true, accurate, complete and up-to-date as of the date of this Opinion and no changes have been made or will be made to the Documents that should have been or should be reflected in the Documents as of the date of this Opinion;

the documents produced to us as originals are authentic and complete, and all documents produced to us as copies (including, without limitation, electronic copies) are accurate and conform to the original;

all documents produced to us as originals and the originals of all documents produced to us as copies were duly executed and certified, as applicable, by the individuals purported to have executed or certified, as the case may be, such documents, and any electronic signatures on any such document have been affixed thereto by the individual to whom such electronic signature belongs and such individual has saved and submitted such document as so electronically signed in such a manner so as to prevent removal or other alteration of such signature;

to the extent relevant for purposes of this Opinion, any and all information contained in the Documents is and will be true, complete and accurate at all relevant times;

no laws other than those of Switzerland will affect any of the conclusions stated in this Opinion;

the Board Resolutions (a) have been duly resolved in duly executed circular resolutions, (b) are a true record of the proceedings described therein and (c) have not been rescinded or amended and are and will be in full force and effect until completion of the offering/issuance of all the Ordinary Shares;

the Ordinary Shares are ordinary shares with a nominal value of CHF 0.05 each of the Company already validly issued before the date of this Opinion that, to the extent permitted by applicable law, are lawfully held or acquired by the Company or by a direct or indirect wholly-owned subsidiary of the Company;

the Company will not pass a voluntary winding-up resolution, no petition will be presented or order made by a court for the winding-up, dissolution, bankruptcy or administration of the Company, and no receiver, trustee in bankruptcy, administrator or similar officer will have been appointed in relation to the Company or any of its assets or revenues between the date of this Opinion and the date of the completion of the offering/issuance of all the Ordinary Shares;

the Company has not entered and will not enter into any transaction which could be construed as repayment of share capital (restitution des versements); and

all authorizations, approvals, consents, licenses, exemptions, other than as required by mandatory Swiss law applicable to the Company or the Articles, and other requirements for the filing of the Prospectus Supplement or for any other activities carried on in view of, or in connection with, the performance of the obligations expressed to be undertaken by the Company in the Prospectus Supplement have been duly obtained or fulfilled in due time and are and will remain in full force and effect, and any related conditions to which the parties thereto are subject have been satisfied.

Opinion

The Company is a corporation (société anonyme) validly existing under the laws of Switzerland.

The Ordinary Shares, issued by the Company and paid for in accordance with Swiss law, the underlying contractual arrangements and the Articles, and registered in the Commercial Register as set out in the Commercial Register Excerpt and entered into the Company’s book of uncertificated securities, are issued, fully paid-in (as to their nominal value) and are non-assessable.

Qualifications

The opinions set out above are subject to applicable bankruptcy, insolvency, reorganization, liquidation, moratorium, civil procedure and other similar laws and regulations as applicable to creditors, debtors, claimants and defendants generally as well as principles of equity (good faith) and the absence of a misuse of rights.

Our opinions set out above are limited solely to the laws of Switzerland and we express no opinion herein concerning the laws of any other jurisdiction.

We express no opinion as to any commercial, accounting, calculating, auditing or other non-legal matter as well as to the completeness or accuracy of the information contained in the Prospectus Supplement. We express no opinion as to tax matters.

The exercise of voting rights and rights related thereto with respect to any Ordinary Shares is only permissible after registration in the Company’s share register as a shareholder with voting rights in accordance with the provisions of, and subject to the limitations provided in, the Articles.

We express no opinion as regards compliance with Swiss law and the Articles of the withdrawal of the preferential subscription rights (droits de souscription préférentiels) of the Company’s shareholders in connection with the issuance of the Ordinary Shares.

When used in this opinion, the term “non-assessable” means that no further contributions have to be made to the nominal share capital of the Company by the relevant holder of the Ordinary Shares.

The resolutions of the Board of Directors or Company’s general meetings, as the case may be, may be challenged by shareholders in court or otherwise. Therefore, notwithstanding registration of the Ordinary Shares with the competent Commercial Register, any shareholder may challenge the resolutions taken by the Board of Directors or the general meeting of the shareholders of the Company, as the case may be, on which such registration of the Ordinary Shares with the competent Commercial Register may be based.

The capital band contained in the Articles authorizes the Board of Directors to issue up to 33,199,082 registered shares of CHF 0.05 nominal value each. We express no opinion as to the future availability and/or sufficiency of such registered shares under the capital band for the purpose of the transactions contemplated under the Prospectus Supplement.