X0508 4 2025-05-28-05:00 false 0001084554 LIGHTBRIDGE Corp LTBR 0001357549 GRAE SETH C/O LIGHTBRIDGE CORPORATION 11710 PLAZA AMERICA DRIVE, SUITE 2000 RESTON VA 20190 true true false false President and CEO true Common Stock 2025-05-28-05:00 4 M false 16146 3.82 A 478632 D Common Stock 2025-05-28-05:00 4 S false 16146 17.42 D 462486 D Employee Stock Option (right to buy) 3.82 2025-05-28-05:00 4 M false 16146 0 D 2019-12-02-05:00 2029-12-02-05:00 Common Stock 16146 104850 D The reported exercise of 16,146 employee stock options and sale of 16,146 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.40 to $17.48, inclusive. The reporting person undertakes to provide to Lightbridge Corporation, any security holder of Lightbridge Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Seth Grae 2025-05-30-05:00