LTBR

SEC source: 0001062993-25-015111 · form4.xml · nonDerivative · entry 4

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 724,234

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015111 · form4.xml · nonDerivative · entry 3

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 680,609

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015111 · form4.xml · nonDerivative · entry 2

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 607,901

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015111 · form4.xml · nonDerivative · entry 1

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 535,193

F1 · kind: Represents a grant of restricted stock awards (RSAs). These RSAs vest in three equal installments on the first, second and third anniversaries of the date of grant, contingent on the reporting person's continued service on each such vesting date.

SEC source: 0001062993-25-015110 · form4.xml · nonDerivative · entry 5

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 395,699

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015110 · form4.xml · nonDerivative · entry 4

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 377,559

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015110 · form4.xml · nonDerivative · entry 3

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,351

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015110 · form4.xml · nonDerivative · entry 2

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 305,004

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015110 · form4.xml · nonDerivative · entry 1

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 259,657

F1 · kind: Represents a grant of restricted stock awards (RSAs). These RSAs vest in three equal installments on the first, second and third anniversaries of the date of grant, contingent on the reporting person's continued service on each such vesting date.

SEC source: 0001062993-25-015109 · form4.xml · nonDerivative · entry 5

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 337,086

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015109 · form4.xml · nonDerivative · entry 4

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 320,304

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015109 · form4.xml · nonDerivative · entry 3

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 295,133

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015109 · form4.xml · nonDerivative · entry 2

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 253,181

F2 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest subject to achievement of a specified performance condition, and at the time of certification thereof, contingent on the reporting person's continued service on the certification date. PSAs that remain unvested as of December 31, 2028 (the end of the performance period) will automatically be forfeited and cancelled without consideration.

SEC source: 0001062993-25-015109 · form4.xml · nonDerivative · entry 1

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,229

F1 · kind: Represents a grant of restricted stock awards (RSAs). These RSAs vest in three equal installments on the first, second and third anniversaries of the date of grant, contingent on the reporting person's continued service on each such vesting date.

SEC source: 0000891839-25-000022 · form4.xml · nonDerivative · entry 1

Chakraborty Sweta · CIK 0001885308 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,590

F1 · shares: The reported sale of 1,948 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 21, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.72 to $13.87, 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.

SEC source: 0000891839-25-000020 · form4.xml · nonDerivative · entry 1

Chakraborty Sweta · CIK 0001885308 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,538

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.92 to $15.40, 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.

SEC source: 0001062993-25-014522 · form4.xml · derivative · entry 3

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,785 shares

Expires 2027-10-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 13,785 employee stock options and sale of 24,334 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

F2 · derivative.exercise_date: This option is fully vested as of the date of this report.

SEC source: 0001062993-25-014522 · form4.xml · nonDerivative · entry 2

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 169,277

F1 · shares: The reported exercise of 13,785 employee stock options and sale of 24,334 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001062993-25-014522 · form4.xml · nonDerivative · entry 1

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 193,611

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 13,785 employee stock options and sale of 24,334 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001477932-25-004503 · form4.xml · derivative · entry 7

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,934

Underlying: Common Stock · 12,861 shares

Expires 2028-08-06

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: The reported exercise of 12,861 employee stock options and sale of 12,861 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001477932-25-004503 · form4.xml · nonDerivative · entry 5

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 179,826

F3 · shares: The reported exercise of 12,861 employee stock options and sale of 12,861 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.01 to $16.57, 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.

SEC source: 0001477932-25-004503 · form4.xml · nonDerivative · entry 4

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 192,687

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: The reported exercise of 12,861 employee stock options and sale of 12,861 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001477932-25-004503 · form4.xml · derivative · entry 6

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,795

Underlying: Common Stock · 3,420 shares

Expires 2028-08-06

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 3,420 employee stock options and sale of 22,337 and 2,500 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001477932-25-004503 · form4.xml · nonDerivative · entry 3

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 179,826

F1 · shares: The reported exercise of 3,420 employee stock options and sale of 22,337 and 2,500 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001477932-25-004503 · form4.xml · nonDerivative · entry 2

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 182,326

F1 · shares: The reported exercise of 3,420 employee stock options and sale of 22,337 and 2,500 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.25 to $16.05, 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.

SEC source: 0001477932-25-004503 · form4.xml · nonDerivative · entry 1

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 204,663

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 3,420 employee stock options and sale of 22,337 and 2,500 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.

SEC source: 0001477932-25-004406 · form4.xml · nonDerivative · entry 1

Tobin Mark Robert · CIK 0001641799 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,038

F1 · shares: The reported sale of 3,000 shares of common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 13, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.13 to $15.68, 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.

SEC source: 0001477932-25-004271 · form4.xml · derivative · entry 3

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 104,850

Underlying: Common Stock · 16,146 shares

Expires 2029-12-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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.

SEC source: 0001477932-25-004271 · form4.xml · nonDerivative · entry 2

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 462,486

F1 · shares: 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.

F2 · price: 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.

SEC source: 0001477932-25-004271 · form4.xml · nonDerivative · entry 1

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 478,632

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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.

SEC source: 0001477932-25-003906 · form4.xml · nonDerivative · entry 1

MAGRAW DANIEL B · CIK 0001379756 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,055

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.56 to $12.33, 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.

SEC source: 0001477932-25-003905 · form4.xml · nonDerivative · entry 1

Goodman Sherri · CIK 0001969973 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,847

F1 · shares: The reported sale of 7,000 shares of common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 24, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.56 to $11.955, 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.

SEC source: 0001477932-25-003623 · form4.xml · nonDerivative · entry 1

Funches Jesse L. · CIK 0001874150 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 46,288

F1 · shares: The reported sale of 6,250 shares of common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 9, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.56 to $10.11, 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.

SEC source: 0001477932-25-002466 · form4.xml · nonDerivative · entry 1

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 201,243

F1 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest, subject to satisfaction of specified performance criteria, in three equal installments on the first, second and third anniversaries of the date of grant, contingent on the reporting person's continued service on each such vesting date.

SEC source: 0001477932-25-002465 · form4.xml · nonDerivative · entry 1

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 214,310

F1 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest, subject to satisfaction of specified performance criteria, in three equal installments on the first, second and third anniversaries of the date of grant, contingent on the reporting person's continued service on each such vesting date.

SEC source: 0001477932-25-002464 · form4.xml · nonDerivative · entry 1

GRAE SETH · CIK 0001357549 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 462,486

F1 · kind: Represents a grant of performance-based restricted stock awards (PSAs). These PSAs vest, subject to satisfaction of specified performance criteria, in three equal installments on the first, second and third anniversaries of the date of grant, contingent on the reporting person's continued service on each such vesting date.

SEC source: 0001477932-25-002291 · form4.xml · nonDerivative · entry 1

MAGRAW DANIEL B · CIK 0001379756 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,194

SEC source: 0001477932-25-001945 · form4.xml · nonDerivative · entry 1

MAGRAW DANIEL B · CIK 0001379756 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,363

SEC source: 0001477932-25-001732 · form4.xml · nonDerivative · entry 1

Funches Jesse L. · CIK 0001874150 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,538

F1 · kind: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

F1 · price: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

SEC source: 0001477932-25-001731 · form4.xml · nonDerivative · entry 1

Chakraborty Sweta · CIK 0001885308 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,538

F1 · kind: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

F1 · price: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

SEC source: 0001477932-25-001730 · form4.xml · nonDerivative · entry 1

MAGRAW DANIEL B · CIK 0001379756 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,686

F1 · kind: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

F1 · price: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

SEC source: 0001477932-25-001729 · form4.xml · nonDerivative · entry 1

Goodman Sherri · CIK 0001969973 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,847

F1 · kind: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

F1 · price: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

SEC source: 0001477932-25-001728 · form4.xml · nonDerivative · entry 1

Tobin Mark Robert · CIK 0001641799 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,038

F1 · kind: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

F1 · price: Represents a grant of restricted stock, which vests in four quarterly installments commencing on March 31, 2025.

SEC source: 0001477932-25-001044 · form4.xml · nonDerivative · entry 1

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 150,900

F1 · shares: The reported sale of 18,303 shares of common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.00 to $14.18, 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.

SEC source: 0001477932-25-001042 · form4.xml · nonDerivative · entry 1

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 159,893

F1 · shares: The reported sale of 30,000 shares of common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.55 to $14.61, 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.

SEC source: 0001477932-25-000438 · form4.xml · derivative · entry 4

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,891

Underlying: Common Stock · 10,070 shares

Expires 2029-12-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 10,070 employee stock options and sale of 45,070 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 13, 2024.

SEC source: 0001477932-25-000438 · form4.xml · nonDerivative · entry 3

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 189,893

F1 · shares: The reported exercise of 10,070 employee stock options and sale of 45,070 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 13, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.50 to $10.00, 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.

SEC source: 0001477932-25-000438 · form4.xml · nonDerivative · entry 2

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 219,963

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 10,070 employee stock options and sale of 45,070 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 13, 2024.

SEC source: 0001477932-25-000438 · form4.xml · nonDerivative · entry 1

MUSHAKOV ANDREY · CIK 0001371007 · EVP, Nuclear Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,893

F1 · shares: The reported exercise of 10,070 employee stock options and sale of 45,070 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.50 to $7.60, 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.

SEC source: 0001477932-25-000437 · form4.xml · nonDerivative · entry 3

GOLDMAN LARRY · CIK 0001305758 · CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 169,203

F1 · shares: The reported exercise of 7,582 employee stock options and sale of 36,116 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 to $10.14, 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.