Hadron Energy submits PDC White Paper on Halo MMR to U.S. NRC

Hadron Energy announced the submission of its Principal Design Criteria White Paper for Hadron’s Halo Modular Microreactor to the U.S. Nuclear Regulatory Commission as part of the formal pre-application engagement process under 10 CFR Part 52. The submission, dated April 10, 2026, formalizes the technical and safety framework that will govern all future license applications for the Halo MMR, including a Manufacturing License and a combined Construction Permit and Operating License. It builds upon the Company’s prior regulatory filings including its Quality Assurance Program Description and Regulatory Engagement Plan. The submission follows a productive pre-application meeting with NRC Staff on December 17, 2025, during which the NRC’s New Reactor Division, including senior technical reviewers from multiple branches, provided positive feedback on Hadron’s proposed regulatory approach. The NRC’s openness to Hadron’s PDC framework provides early validation of the Company’s licensing strategy and meaningfully de-risks the path to commercialization. The White Paper is submitted in direct fulfillment of the action item from that meeting.