Lightbridge Corporation participated in the White House launch of the Utility Power Reactor Incremental Scaling Effort (UPRISE), a federal initiative targeting the addition of approximately 5 GW of nuclear capacity by maximizing output from the existing reactor fleet. The event was held at the Eisenhower Executive Office Building in the White House complex in Washington, D.C., on June 17, 2026. Lightbridge was represented by Chairman and Chief Executive Officer Seth Grae.

UPRISE was launched by the U.S. Department of Energy (DOE) to advance the President's May 2025 executive orders, which direct the DOE to facilitate 5 GW of power uprates at existing reactors. The initiative brings together nuclear utilities, energy off-takers, and other stakeholders to support the expansion of output from the nation's operating reactor fleet.

Lightbridge Fuel is being designed to deliver among the largest power uprates available to the operating pressurized water reactor (PWR) fleet. This positions the technology to directly contribute to UPRISE's objectives. The Company continues to advance Lightbridge Fuel through testing and qualification toward commercial deployment.

"UPRISE recognizes a straightforward reality: the fastest and most cost-effective megawatts we can add to the grid are the ones we draw from reactors already operating today," said Seth Grae, Chairman and Chief Executive Officer of Lightbridge. "Lightbridge Fuel is being designed to deliver the greatest power uprates available to the existing pressurized water reactor fleet, and we were proud to take part in the launch of an initiative aimed squarely at that opportunity."

Key Initiative Details

The UPRISE initiative and Lightbridge's involvement focus on the following parameters:

"We are grateful to the Administration and the Department of Energy for convening this event," Mr. Grae added. "We are advancing our fuel toward delivering additional clean, secure power."

About Lightbridge Corporation

Lightbridge Corporation is focused on developing advanced nuclear fuel technology essential to delivering abundant, zero-emission, clean energy and providing energy security. The Company is developing Lightbridge Fuel, a proprietary next-generation nuclear fuel technology for existing light-water and pressurized heavy-water reactors. The technology is designed to significantly enhance reactor safety, economics, and proliferation resistance. Lightbridge has entered into two long-term framework agreements with Battelle Energy Alliance, LLC, the United States Department of Energy's operating contractor for Idaho National Laboratory.

Lightbridge Corporation (NASDAQ: LTBR) announced that Chairman and Chief Executive Officer Seth Grae will participate in two industry events during the week of June 16, 2026, to engage with the investment community and the nuclear sector. The company is focused on developing advanced nuclear fuel technology essential for delivering zero-emission energy and enhancing energy security.

Grae is scheduled to attend the Jefferies Houston Power Conference in Houston, Texas, on Tuesday, June 16, 2026. During this event, he will participate in one-on-one meetings with institutional investors to discuss the company's strategic initiatives and technology developments.

On Thursday, June 18, 2026, Grae will speak at the 2026 Virginia Is For Nuclear Summit, hosted by the Virginia Nuclear Energy Consortium at Virginia Commonwealth University in Richmond, Virginia. He is set to appear on the closing panel titled "Key Takeaways and Opportunities for Virginia" from 3:20 to 4:10 p.m. ET.

"We look forward to taking part in both events this week, in Houston and in Richmond," said Seth Grae, Chairman and Chief Executive Officer of Lightbridge. "We look forward to discussing the role that advanced nuclear fuel and power uprates can play in expanding output from the existing reactor fleet and new reactors."

Lightbridge is developing Lightbridge Fuel™, a proprietary next-generation nuclear fuel technology designed for existing light-water and pressurized heavy-water reactors. The technology aims to significantly enhance reactor safety, economics, and proliferation resistance. The company is also adapting this fuel for new small modular reactors to support load-following with renewables on a zero-carbon electric grid.

The company has established two long-term framework agreements with Battelle Energy Alliance, LLC, the operating contractor for the Idaho National Laboratory. Additionally, the U.S. Department of Energy's Gateway for Accelerated Innovation in Nuclear program has awarded Lightbridge support for fuel development. Lightbridge holds an extensive worldwide patent portfolio and is included in the Russell 2000® and Russell 3000® Indexes.