Reactor Parent Wind-Down, Inc. (f/k/a Ultra Safe Nuclear Corporation), a development-stage nuclear technology company focused on advanced microreactor systems and TRISO fuel, filed Chapter 11 petitions on October 29, 2024 in the U.S. Bankruptcy Court for the District of Delaware (Case No. 24-12443) before Judge Karen B. Owens following the death of its primary investor in May 2024. Despite approximately $125 million in cumulative Helms family equity and loans, the company with 2023 operating expenses of $81.2 million versus revenue of $5.8 million could not overcome the loss of its anchor investor. The Debtors obtained $23 million in DIP financing from JMB Capital at 14% interest plus 6% exit fee. A court-supervised asset sale process resulted in two major transactions: Standard Nuclear acquired fuel-related assets for $28 million (closed Dec 27, 2024), while NANO Nuclear purchased MMR and Pylon technologies for $8.5 million (closed Jan 10, 2025), with combined proceeds of ~$41 million. The First Amended Joint Chapter 11 Plan of Liquidation was confirmed April 10, 2025 and effective April 14, 2025. A liquidation trust (RPWI) was established to administer remaining claims and assets. Final decree closed three affiliate cases July 21, 2025.
