As filed with the U.S. Securities and Exchange Commission on May 1, 2024. Registration No. 333-278076 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 4 to FORM S-1 10 Times Square, 30 Floor New York, New York 10018 (212) 634-9206 (Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant's Principal Executive Offices) James Walker Chief Executive Officer Nano Nuclear Energy Inc. 10 Times Square, 30 Floor New York, New York 10018 (212) 634-920 ...