ASP Isotopes Inc., through its wholly owned subsidiary Quantum Leap Energy LLC (QLE), has entered into a Convertible Note Purchase Agreement with institutional and individual investors to issue approximately $64.3 million in convertible promissory notes. The offering targets accredited and certain non-U.S. investors, with the initial closing expected around November 17 or 18, 2025, subject to customary conditions. Proceeds from the notes will be used to build and develop QLE's laser enrichment production facilities and for general corporate purposes. Upon closing, QLE's outstanding convertible notes from March and June 2024 will automatically convert into the new 2025 notes. The agreement does not include any financial covenants, and the notes have not been registered under the Securities Act.