As filed with the Securities and Exchange Commission on January 29, 2020 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 20-F o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 for the fiscal year ended December 31, 2019 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR o SHELL COMPANY REPORT PURSU ...

As filed with the Securities and Exchange Commission on January 30, 2019 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 20-F o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 for the fiscal year ended December 31, 2018 (Translation of Registrant's name into English) Switzerland (Jurisdiction of incorporation or organization) Lichtstrasse 35 O ...