LTBR CEO Seth Grae files Form 4 on share tax withholding

Rhea-AI Filing Summary

Lightbridge Corp (LTBR) President and CEO Seth Grae, who is also a director, reported a routine insider transaction on a Form 4. On 11/20/2025, 10,791 shares of common stock were withheld at $14.53 per share to cover taxes upon the vesting of restricted stock awards, and no shares were sold into the market. Following this transaction, he directly owns 742,525 shares of Lightbridge common stock.

Grae also reports fully vested employee stock options giving the right to buy 7,937 shares at an exercise price of $12.60 per share expiring on 10/26/2027, and 18,199 shares at $18.48 per share expiring on 11/09/2026. These holdings show his continued equity stake and option-based incentives in the company.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider GRAE SETH

Role President and CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	10,791	$14.53	$157K
holding	Employee Stock Option (right to buy)	--	--	--
holding	Employee Stock Option (right to buy)	--	--	--

Holdings After Transaction: Common Stock — 742,525 shares (Direct); Employee Stock Option (right to buy) — 7,937 shares (Direct)

Footnotes (1)

1. Shares withheld to cover taxes upon vesting of restricted stock awards. No shares were sold. This option is fully vested as of the date of this report.

Form 4 Insider Transactions: What Each Field Means →

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).

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)
11/20/2025

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	11/20/2025		F		10,791(1)	D	$14.53	742,525	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)	$12.6							(2)	10/26/2027	Common Stock	7,937		7,937	D
Employee Stock Option (right to buy)	$18.48							(2)	11/09/2026	Common Stock	18,199		18,199	D

Explanation of Responses:

1. Shares withheld to cover taxes upon vesting of restricted stock awards. No shares were sold.

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

	/s/ Seth Grae	11/21/2025
	** 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 insider transaction did LTBR CEO Seth Grae report on this Form 4?

The Form 4 reports that on 11/20/2025, 10,791 shares of Lightbridge common stock were withheld to cover taxes upon the vesting of restricted stock awards, at a price of $14.53 per share, and no shares were sold.

How many LTBR shares does Seth Grae beneficially own after the reported transaction?

After the reported tax-withholding transaction, Seth Grae beneficially owns 742,525 shares of Lightbridge common stock in direct ownership.

Did the LTBR Form 4 filing indicate any market sale of shares by the CEO?

No. The filing explains that the 10,791 shares were withheld to cover taxes upon vesting of restricted stock awards and that no shares were sold.

What stock options for LTBR does Seth Grae hold according to this Form 4?

He holds fully vested employee stock options to buy 7,937 shares at $12.60 per share expiring on 10/26/2027, and 18,199 shares at $18.48 per share expiring on 11/09/2026.

Are Seth Grae’s LTBR stock options vested as of this report?

Yes. The filing states that the reported employee stock options are fully vested as of the date of the report.

What is Seth Grae’s role at Lightbridge Corp (LTBR)?

Seth Grae is reported as a Director and as an Officer, serving as President and CEO of Lightbridge Corp.