Nano Nuclear posts $580 million cash pile as NRC opens Illinois reactor review

Nano Nuclear Energy ended its fiscal third quarter with $580 million in cash, cash equivalents and short-term investments, and the Nuclear Regulatory Commission opened a formal review of the company's first planned reactor. The Nasdaq-listed developer, which trades as NNE, reported results for the quarter ended June 30, 2026, along with a business update covering the quarter and the weeks since.

NRC begins formal review of first reactor site

The NRC docketed Nano Nuclear's Construction Permit Application for the KRONOS MMR Energy System at the University of Illinois in May 2026, starting the agency's formal review activities. The NRC has said it expects to finish its environmental assessment in the first quarter of 2027 and its safety evaluation in the third quarter of 2027. Nano Nuclear said that timeline lines up with its own plan to start construction in the second half of 2027.

The company also pointed to progress on two reactor subsystems during the quarter: a collaboration with Fortil on the KRONOS fuel handling and storage system, and a separate collaboration with another global engineering firm on the reactor's helium circulator.

STS acquisition adds revenue and fuel-cycle capability

Nano Nuclear completed its acquisition of Secured Transportation Systems, a US-based nuclear logistics and transportation company with more than 20 years of experience moving radioactive and nuclear materials. STS generated audited revenue of about $7.1 million and net income of about $1.3 million for the twelve months ended December 31, 2025, and about $3.9 million in unaudited revenue in the first six months of calendar 2026.

The deal gives Nano Nuclear its own logistics and transportation business instead of buying that capability from outside providers, part of what the company calls its vertical integration strategy across the nuclear fuel cycle. Nano Nuclear said it is working on other acquisition and partnership opportunities in the fuel cycle, with the potential for more than one announcement in the coming months.

Commercial pipeline grows across data centers and defense

Nano Nuclear completed a feasibility study for 1 gigawatt of power from a KRONOS MMR system for BaRupOn's planned AI data center and manufacturing campus in Texas, and is now discussing the licensing process with BaRupOn. Separately, the company is working toward an initial framework with a potential strategic collaborator planning a multi-gigawatt pipeline of data center projects in the US and other markets.

Nano Nuclear also signed a memorandum of understanding with Supermicro to evaluate integrating the KRONOS MMR system with Supermicro's AI server and data center platforms. On the government side, the company was selected for an AFWERX SBIR Phase I award and is pursuing a Direct to Phase II award for a separate project at Joint Base Anacostia Bolling.

Cash position and nine-month financing activity

Cash, cash equivalents and short-term investments rose during the quarter, driven mainly by $25.6 million in net proceeds from Nano Nuclear's at-the-market share program, partly offset by spending on KRONOS development and related fuel-cycle work.

Over the nine months ended June 30, 2026, the company used $18.7 million in operating activities, about $4.0 million more than the same period a year earlier, mainly reflecting higher spending on KRONOS and fuel-cycle work, partly offset by higher interest income and lower equity-based compensation. Investing activities used $297.6 million over the same nine months, up $284.7 million from a year earlier, mainly because the company put an additional $281.2 million into short-term investments to earn a higher yield on its cash balance. Financing activities provided $411.5 million over the nine months, up $202.2 million from a year earlier, primarily from $378.5 million in net proceeds from an October 2025 private placement and the third-quarter ATM proceeds.

Nano Nuclear had 85 employees and contractors as of June 30, 2026, up from 31 a year earlier, and said it expects further headcount increases to support its growth plans.

Jay Yu, founder and chairman, said the STS deal made Nano Nuclear "a revenue generating microreactor developer," and pointed to what he called "one of the industry's strongest foundations for long-term value creation."