08:24 AM EST, 11/19/2025 (MT Newswires) -- Lightbridge ( LTBR ) said Wednesday that it has begun irradiation testing of its enriched uranium-zirconium alloy fuel material samples.

The company said the testing is intended to collect key material performance data for its Lightbridge ( LTBR ) fuel design.

The tests are being conducted at the Advanced Test Reactor in Arco, Idaho under the company's cooperative research and development agreement with the Idaho National Laboratory.

Shares of Lightbridge ( LTBR ) were up 2.1% in recent premarket activity.