Companies · Nuclear, fuel and SMR · data
Ultra Safe Nuclear Corporation (bankrupt; assets sold 2025)
Profile
Ultra Safe Nuclear Corporation, the Seattle-based developer of the MMR high-temperature gas-cooled microreactor, the Pylon reactor and Fully Ceramic Microencapsulated TRISO fuel, filed for Chapter 11 in Wilmington, Delaware on 29 Oct 2024 (ANS 30 Oct 2024) together with subsidiaries USNC-Technologies, USNC-Power and Global First Power. In the January 2025 auction NANO Nuclear Energy acquired the MMR and Pylon reactor assets (now KRONOS MMR) and Standard Nuclear bought the fuel-related assets for US$28 million (sale completed February 2025, NEI 12 Jun 2025). Kept as a pointer record; no market data apply.
Source: ANS Nuclear Newswire 30 Oct 2024; NEI 12 Jun 2025; data/smr_projects.csv, 9 Oct 2026 · confidence mediumKey projects
| Project | Country | Stage | Note | Map |
|---|---|---|---|---|
| NANO Nuclear KRONOS MMR (ex-USNC MMR, HTGR) - University of Illinois Urbana-Champaign, Illinois [originator of the MMR design; now NANO Nuclear] | USA | Licence application | Regulator stage as of 9 Oct 2026: Construction permit application submitted by UIUC 31 Mar 2026; NRC accepted for review (announced 20 May 2026); review expected complete 2027; construction planned H2 2027 | open on the map |
Deals
No deal recorded for this company (as of 9 Oct 2026). All deals.
Documents
| Document | Type | Date |
|---|---|---|
| ANS: Microreactor developer Ultra Safe Nuclear files for bankruptcy | News | 30 Oct 2024 |
| NEI: Standard Nuclear rises from USNC bankruptcy | News | 12 Jun 2025 |
Chart
TradingView symbol: n/a · bankrupt, assets sold
- Market cap, USD
- n/a · bankrupt, assets sold
- Market cap, local
- n/a · bankrupt, assets sold