As Filed with the Securities and Exchange Commission on September 18, 2026 Registration No. 333- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 WESTPORT FUEL SYSTEMS INC. (Exact Name of Registrant as Specified in its Charter) N/A (Translation of Registrant's name into English) (State or other jurisdiction of incorporation or organization) UNITED STATES (Primary Standard Industrial Classification Code Number) Alberta, Canada 3537 Not ...