ASP Isotopes Inc. Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (4 lists). Names and jurisdictions are as filed.
- 2026-04-10: Subsidiary ASP Isotopes Guernsey Limited (formerly, PDS-Photonica Holdings (Guernsey) Limited); Jurisdiction Guernsey.
- 2026-04-10: Subsidiary ASP Isotopes South Africa (Proprietary) Limited (formerly, PDS Photonica Holdings South Africa (PTY) Limited); Jurisdiction South Africa.
- 2026-04-10: Subsidiary Enlightened Isotopes (Pty) Ltd; Jurisdiction South Africa.
- 2026-04-10: Subsidiary ASPI South Africa Asset Finance; Jurisdiction South Africa.
| Annual report filed | Subsidiary | Jurisdiction |
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| 2026-04-10 | ASP Isotopes Guernsey Limited (formerly, PDS-Photonica Holdings (Guernsey) Limited) | Guernsey |
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| 2026-04-10 | ASP Isotopes South Africa (Proprietary) Limited (formerly, PDS Photonica Holdings South Africa (PTY) Limited) | South Africa |
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| 2026-04-10 | Enlightened Isotopes (Pty) Ltd | South Africa |
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| 2026-04-10 | ASPI South Africa Asset Finance | South Africa |
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| 2026-04-10 | Enriched Energy LLC | Delaware, U.S. |
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| 2026-04-10 | ASP Isotopes UK Ltd | England & Wales |
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| 2026-04-10 | ASP Isotopes Services (UK) Limited | England & Wales |
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| 2026-04-10 | Enlightened Isotopes (Pty) Ltd | South Africa |
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| 2026-04-10 | ASP Isotopes ehf | Iceland |
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| 2026-04-10 | Quantum Leap Energy LLC | Delaware, U.S. |
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| 2026-04-10 | Quantum Leap Energy Limited | England & Wales |
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| 2026-04-10 | Quantum Leap Energy (Pty) Ltd | South Africa |
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| 2026-04-10 | QLE TP Funding SPE LLC | Delaware, U.S. |
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| 2026-04-10 | K2025267858 (South Africa) (Pty) Ltd | South Africa |
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| 2026-04-10 | Global Radiopharmacies LLC | Delaware, U.S. |
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| 2026-04-10 | East Coast Nuclear Pharmacy LLC | Florida, U.S. |
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| 2026-04-10 | NuMed Diagnostics, LLC | South Carolina, U.S. |
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| 2026-04-10 | PET Labs Pharmaceuticals (Pty) Ltd | South Africa |
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| 2026-04-10 | PET Labs Global Nuclear Medicine SEZC | Cayman Islands |
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| 2026-04-10 | Renergen Limited | South Africa |
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| 2026-04-10 | Tetra4 Proprietary Limited | South Africa |
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| 2026-04-10 | Cryovation Proprietary Limited | South Africa |
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| 2026-04-10 | Renergen US Inc. | Delaware, U.S. |
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| 2026-04-10 | Skyline Builders Group Holding Limited | Hong Kong |
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| 2026-04-10 | Not a wholly-owned direct or indirect subsidiary of ASP Isotopes Inc. | |
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| 2025-03-31 | ASP Isotopes Guernsey Limited (formerly, PDS-Photonica Holdings (Guernsey) Limited) | Guernsey |
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| 2025-03-31 | ASP Isotopes South Africa (Proprietary) Limited (formerly, PDS Photonica Holdings South Africa (PTY) Limited) | South Africa |
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| 2025-03-31 | Enlightened Isotopes (Pty) Ltd | South Africa |
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| 2025-03-31 | ASPI South Africa Asset Finance | South Africa |
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| 2025-03-31 | Enriched Energy LLC | Delaware, U.S. |
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| 2025-03-31 | ASP Isotopes UK Ltd | England & Wales |
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| 2025-03-31 | Enlightened Isotopes (Pty) Ltd | South Africa |
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| 2025-03-31 | ASP Isotopes ehf | Iceland |
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| 2025-03-31 | Quantum Leap Energy LLC | Delaware, U.S. |
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| 2025-03-31 | Quantum Leap Energy Limited | England & Wales |
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| 2025-03-31 | Quantum Leap Energy (Pty) Ltd | South Africa |
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| 2025-03-31 | QLE TP Funding LLC | Delaware, U.S. |
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| 2025-03-31 | PET Labs Pharmaceuticals (Pty) Ltd | South Africa |
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| 2025-03-31 | PET Labs Global Nuclear Medicine SEZC | Cayman Islands |
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| 2024-04-10 | ASP Isotopes Guernsey Limited (formerly, PDS-Photonica Holdings (Guernsey) Limited) | Guernsey |
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| 2024-04-10 | ASP Isotopes South Africa (Proprietary) Limited (formerly, PDS Photonica Holdings South Africa (PTY) Limited) | South Africa |
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| 2024-04-10 | Enriched Energy LLC | Delaware, U.S. |
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| 2024-04-10 | ASP Isotopes UK Ltd | England & Wales |
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| 2024-04-10 | Enlightened Isotopes (Pty) Ltd | South Africa |
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| 2024-04-10 | ASP Isotopes EHF | Iceland |
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| 2024-04-10 | Quantum Leap Energy LLC | Delaware, U.S. |
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| 2024-04-10 | Quantum Leap Energy Limited | England & Wales |
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| 2024-04-10 | Quantum Leap Energy (Pty) Ltd | South Africa |
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| 2024-04-10 | PET Labs Pharmaceuticals (Pty) Ltd | South Africa |
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| 2023-03-31 | ASP Isotopes Guernsey Limited (formerly, PDS-Photonica Holdings (Guernsey) Limited) | Guernsey |
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| 2023-03-31 | ASP Isotopes South Africa (Proprietary) Limited (formerly, PDS Photonica Holdings South Africa (PTY) Limited) | South Africa |
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| 2023-03-31 | Enriched Energy LLC | Delaware, U.S. |
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| 2023-03-31 | ASP Isotopes UK Ltd | England & Wales |
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| 2023-03-31 | Enlightened Isotopes (Pty) Ltd | South Africa |
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