The Johannesburg Stock Exchange (JSE) is pleased to announce the listing of ASP Isotopes Inc. Under the share code “ISO”, advanced materials company, ASP Isotopes enters the JSE’s Main Board as a secondary listing. Retaining its primary listing on the Nasdaq, the company joins numerous other international entities in the secondary listing ecosystem.
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ASP Isotopes’ listing marks the third listing on the JSE in 2025, continuing a positive trend for the JSE in attracting listings and signalling confidence in the JSE as a platform for growth for international companies seeking to expand their market presence and access South Africa's deep liquidity pool. This momentum is further supported by the JSE’s strategic Memorandum of Understanding with Nasdaq, which aims to enhance cross-border collaboration and streamline dual and secondary listings. The partnership underscores the JSE’s commitment to global connectivity and innovation, positioning it as a compelling destination for international capital.
ASP Isotopes is an advanced materials company dedicated to the development of technology and processes to produce isotopes for use in multiple industries. The company’s initial focus is on producing and commercializing highly enriched isotopes for the healthcare and technology industries. The Company employs proprietary Aerodynamic Separation Process technology to enrich isotopes of elements with a low atomic mass (light isotopes) at its 3 facilities in Pretoria. Additionally, it also plans to enrich isotopes for the nuclear energy sector using Quantum Enrichment technology that it is developing.
ASP Isotopes’ history and technology is firmly rooted in South Africa and has been developed over four years by the company’s highly skilled South African team. This listing provides South African investors with direct access to ASP Isotope’s equity and supports the company’s strategy to broaden its shareholder base and access South Africa’s deep capital pools.
Paul Mann, Chairman and CEO of ASP Isotopes said, “While our capital base has been created in the USA and Europe, the heartbeat of our company is clearly in South Africa, with 97% of our employees and all our operating assets currently located in South Africa. We have to thank the South African people for helping us achieve all we have done over the last four years and therefore we owe it to the South African people to make our securities available on the JSE.”
A total of 91 413 109 ordinary shares will be listed on the JSE’s Main Board at a par value of $0.01 each. ASP Isotopes will be listed under the share code ‘ISO’ and classified under the Chemicals sector.
“We are thrilled to welcome ASP Isotopes to the JSE,” said Valdene Reddy, Director of Capital Markets at the JSE. “This listing not only demonstrates the strength of our secondary listing framework supported by an enabling regulatory environment but also reflects the global confidence in South Africa as an attractive investment destination. ASP Isotopes’ presence on our exchange not only expands the number of listed companies but also offers local investors access to a unique player in the nuclear isotopes space that leverages home grown technology in a global market.”
ASP isotopes’ listing increases the number of overall companies listed on the JSE to 276, with a market cap of R22.47 trillion.
