ASP Isotopes announces updates on commercial production at enrichment facilities

ASP Isotopes (ASPI) announced several updates on the progress of commercial production at the Company’s three isotope enrichment facilities in Pretoria, South Africa as well as other corporate matters, in advance of a presentation by the Company’s Chairman and CEO, Paul Mann, at the Emerging Growth Conference at 10:15 a.m. EST on July 17, 2025. Silicon-28. The Company commenced commercial production of Silicon-28 during late March 2025 and has successfully enriched large quantities of intermediate product to 99%. The Company expects to ship finished commercial product enriched to at least 99.995% to its first customers during August 2025. Based on the first three months of commercial production, the Company believes this plant has an annual capacity of greater than 80 kilograms of highly enriched Silicon-28 when operating at maximum operating rate versus previous guidance of greater than 50 kilograms and significantly higher than the original expectations of approximately 10 kilograms. This additional capacity expansion cost approximately $4 million in fixed asset investment, which was incurred during 2H 2024 and Q1 2025. Ytterbium-176. The Company commenced commercial production of Ytterbium-176 during April 2025 and has successfully enriched significant quantities of intermediate product to 92.4%. The Company is currently achieving an enrichment factor of 52, which is in line with Company’s expectations of greater than 50. The Company expects the production of Ytterbium-176 to be a two-step process with the first batch enriching product from natural abundance of 13% Ytterbium-176 to at least 88% and the final batch completing the enrichment from 88% to 99.75%. The Company expects to ship commercial samples of enriched Ytterbium-176 to customers during August 2025. The Ytterbium-176 enrichment plant is currently operating in a batch processing mode operating for 3-5 hours per day, 5-7 days per week. During August, the Company expects to transition to a semi-continuous commercial processing method, which will increase production rates exponentially to the targeted production rate of 1 kilogram per annum. The progress updates on production of Silicon-28 and Ytterbium-176 continue to demonstrate the Company’s ability to bring projects in on time and in line with, or above, expected production levels. Nickel-64, Gadolinium-160 and Zinc-68. The Company has recently received the first of the required permits to import controlled laser equipment for the enrichment of Nickel-64, Gadolinium-160 and Zinc-68. Based on the operational results of the first Quantum Enrichment facility, the Company is accelerating plans to construct enrichment facilities in South Africa for many more isotopes using the QE process. Carbon-14/Carbon-12. As previously communicated, the Company’s Carbon-14 enrichment plant was ready for commercial production during 2024, but the Company experienced continued delays in the delivery of adequate quantities of feedstock from the customer, which delayed the production of commercial quantities of enriched Carbon-14. Initial batches of feedstock arrived during 1Q 2025, but the Company failed to receive sufficient quantity of feedstock from the customer to produce commercial product. Recently, there has been significant interest in Carbon-12 and the Company is currently enriching Carbon-12 to 99.99% in its existing Carbon-14 enrichment plant using the ASP technology and expects to supply its first commercial product during August 2025. Demand for Carbon-12 significantly exceeds the demand for Carbon-14 and the Company is assessing the potential to expand the capacity of the Carbon enrichment facility to be able to supply both Carbon-12 and Carbon-14 from this facility.