As filed with the Securities and Exchange Commission on March 20, 2026 Registration No. 333-294225 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 TURBOGEN LTD. (Exact name of registrant as specified in its charter) | State of Israel | 4931 | Not Applicable | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer | | incorporation or organization) | Cla ...