[Form 4] LIGHTBRIDGE Corp Insider Trading Activity

Rhea-AI Filing Summary

Director and CEO Seth Grae reported exercising 7,616 employee stock options on 10/10/2025 and immediately selling the same 7,616 shares. The option exercise used a $10.80 exercise price for those options and the subsequent sale generated a weighted average sale price of $25.84 per share, with trade prices reported between $25.80 and $25.92. The transactions were executed under a Rule 10b5-1 trading plan adopted on 09/12/2024, which the filer discloses as the basis for the timing. Following these transactions, the reporting person beneficially owned 760,932 shares before the sale and 753,316 shares after the sale. The filing also lists outstanding employee stock options exercisable at $12.60, $18.48, and $55.20 with various exercisability and expiration dates.

Positive

• Transparent disclosure of exercises and sales under a Rule 10b5-1 plan adopted on 09/12/2024
• Realized gain on exercised options: exercise at $10.80 vs weighted sale at $25.84 for 7,616 shares

Negative

• Insider share count reduced from 760,932 to 753,316 following the sale
• Potential future dilution from outstanding options (examples include $12.60, $18.48, and $55.20 strikes)

Insights

Corporate Governance Analyst

Insider exercised vested options and sold the same shares under a pre-existing 10b5-1 plan.

The reporting person, who serves as President and CEO, exercised 7,616 options at an exercise price of $10.80 on 10/10/2025 and sold the resulting shares at a weighted average of $25.84. The filing states these trades were made pursuant to a Rule 10b5-1 plan adopted on 09/12/2024, which is a standard mechanism to provide an affirmative defense against insider trading claims when properly structured.

The key dependencies are the 10b5-1 plan's terms and whether sales follow its predetermined schedule; investors can monitor subsequent Form 4s for further planned trades or departures from the plan. Near-term items to watch include any additional option exercises or open-market sales by executives reported on future filing dates.

Equity Compensation Specialist

Transaction reduces option-held position by exercising vested options and realizes spread between exercise and sale price.

The exercised options had an exercise price of $10.80, and the shares were sold at an average of $25.84, realizing a pre-tax spread of about $15.04 per share on those 7,616 shares. The Form 4 also records additional vested and unvested employee stock options totaling ~76,062 underlying shares across listed grants.

Risk factors include potential dilution if remaining options are exercised; monitor option exercise schedules and expiration dates listed (for example expirations through 08/06/2028) for future dilution timing and any patterned sales under the 10b5-1 plan.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GRAE SETH

(Last) (First) (Middle)

C/O LIGHTBRIDGE CORPORATION

11710 PLAZA AMERICA DRIVE, SUITE 2000

(Street)

RESTON VA 20190

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
LIGHTBRIDGE Corp [ LTBR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
10/10/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/10/2025		M		7,616(1)	A	$10.8	760,932	D
Common Stock	10/10/2025		S		7,616(1)	D	$25.84(2)	753,316	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	$10.8	10/10/2025		M			7,616(1)	(3)	08/06/2028	Common Stock	7,616	$0	20,600	D
Employee Stock Option (right to buy)	$12.6							(3)	10/26/2027	Common Stock	40,233		40,233	D
Employee Stock Option (right to buy)	$18.48							(3)	11/09/2026	Common Stock	18,199		18,199	D
Employee Stock Option (right to buy)	$55.2							(3)	11/20/2025	Common Stock	17,430		17,430	D

Explanation of Responses:

1. The reported exercise of 7,616 employee stock options and sale of 7,616 shares of common stock were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.80 to $25.92, 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.

3. This option is fully vested as of the date of this report.

	/s/ Seth Grae	10/10/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did LIGHTBRIDGE (LTBR) insider Seth Grae disclose on Form 4?

The Form 4 shows Seth Grae exercised 7,616 employee stock options at $10.80 and sold the resulting 7,616 shares at a weighted average price of $25.84 on 10/10/2025.

Were these transactions executed under a trading plan?

Yes. The filing states the exercise and sale were effected pursuant to a Rule 10b5-1 trading plan adopted on 09/12/2024.

How did the insider's beneficial ownership change after the sale?

Beneficial ownership decreased from 760,932 shares to 753,316 shares after the reported sale.

What prices and ranges were disclosed for the sale?

The weighted average sale price was $25.84; individual sale prices ranged from $25.80 to $25.92.

Are there other option grants disclosed for the reporting person?

Yes. The filing lists additional employee stock options exercisable at $12.60, $18.48, and $55.20 with varying exercisability and expiration dates.