Lightbridge CTO has 3,833 shares withheld for taxes

LIGHTBRIDGE Corp (LTBR) reported insider transactions by Scott Randall Holcombe, its SVP & Chief Technology Officer.

Rhea-AI Filing Summary

LIGHTBRIDGE Corp (LTBR) reported insider transactions by Scott Randall Holcombe, its SVP & Chief Technology Officer. On 2026-08-28, a total of 3,833 shares of common stock were withheld at $7.55 per share to cover taxes upon vesting of restricted stock awards, and the footnote states that no shares were sold in the market. After these tax-withholding dispositions, Holcombe held 312,717 shares directly and 9,153 shares indirectly through his spouse.

Insider Trade Summary

Tax Withholding: 3,833 shares

Tax Withholding 2 txns

Insider Holcombe Scott Randall

Role SVP & Chief Technology Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	3,730	$7.55	$28K
Tax Withholding	Common Stock F1	103	$7.55	$777.65

Holdings After Transaction: Common Stock — 312,717 shares (Direct); Common Stock — 9,153 shares (Indirect, By spouse)

Footnotes (1)

1. F1. Shares withheld to cover taxes upon vesting of restricted stock awards. No shares were sold.

Key Figures

Shares withheld for taxes (direct): 3,730 shares Shares withheld for taxes (indirect by spouse): 103 shares Total shares withheld for taxes: 3,833 shares +3 more

6 metrics

Shares withheld for taxes (direct) 3,730 shares Common Stock withheld on 2026-08-28 for tax liability, direct holding

Shares withheld for taxes (indirect by spouse) 103 shares Common Stock withheld on 2026-08-28 for tax liability, indirect holding by spouse

Total shares withheld for taxes 3,833 shares Exercise price or tax liability-related dispositions (code F) on 2026-08-28

Tax-withholding reference price $7.55 per share Applied to both tax-withholding transactions on 2026-08-28

Direct holdings after transaction 312,717 shares Direct LTBR Common Stock held by Holcombe after 2026-08-28 transactions

Indirect holdings after transaction (spouse) 9,153 shares Indirect LTBR Common Stock held by spouse after 2026-08-28 transactions

Key Terms

restricted stock awards, withheld to cover taxes, indirect, transaction code F

4 terms

restricted stock awards financial

"Shares withheld to cover taxes upon vesting of restricted stock awards."

Restricted stock awards are company shares given to employees or executives that cannot be sold or transferred until certain conditions — like staying with the company for a set time or meeting performance targets — are met, like a gift that is locked in a safe until rules are satisfied. Investors care because these awards tie management’s pay to company performance, can increase the number of shares outstanding when they become tradable (dilution), and may signal expected future selling pressure or commitment to long-term growth.

withheld to cover taxes financial

"Shares withheld to cover taxes upon vesting of restricted stock awards."

indirect financial

"Indirect ownership noted as "By spouse" for certain shares."

transaction code F financial

"Transaction code F indicates payment of tax liability by delivering or withholding securities."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did LTBR executive Scott Randall Holcombe report?

Scott Randall Holcombe reported that 3,833 LTBR common shares were withheld on 2026-08-28 at $7.55 per share to cover taxes upon vesting of restricted stock awards. A filing footnote specifies that no shares were sold in the open market.

Were LTBR shares actually sold by the insider in this Form 4?

No. The Form 4 footnote states the shares were withheld to cover taxes upon vesting of restricted stock awards and that no shares were sold in the open market. The transactions are coded as tax-withholding dispositions (code F).

How many LTBR shares were withheld for Scott Randall Holcombe’s taxes?

A total of 3,833 LTBR shares were withheld on 2026-08-28, consisting of 3,730 shares from Holcombe’s direct holdings and 103 shares from indirect holdings through his spouse, all at $7.55 per share.

What are Scott Randall Holcombe’s LTBR holdings after these transactions?

Following the 2026-08-28 tax-withholding transactions, Scott Randall Holcombe directly held 312,717 LTBR shares and indirectly held 9,153 shares through his spouse, as reported in the Form 4.

What does transaction code F mean in the LTBR Form 4 filing?

Transaction code F in the LTBR Form 4 indicates payment of tax liability by delivering or withholding securities. The filing’s footnote clarifies that shares were withheld upon vesting of restricted stock awards and that no open-market sales occurred.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/28/2026 - 04:17 PM EDT Accepted by SEC EDGAR 08/28/2026 - 04:16 PM EDT Learn about SEC filing dates

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^*

Holcombe Scott Randall

(Last) (First) (Middle)

C/O LIGHTBRIDGE CORPORATION

11710 PLAZA AMERICA DRIVE, SUITE 2000

(Street)

RESTON VIRGINIA 20190

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/28/2026

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

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

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

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	08/28/2026		F		3,730(1)	D	$7.55	312,717	D
Common Stock	08/28/2026		F		103(1)	D	$7.55	9,153	I	By spouse

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

Explanation of Responses:

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

	/s/ Larry Goldman, Attorney-in-Fact for Scott R. Holcombe	08/28/2026
	** 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.
* Form 4: SEC 1474 (03-26)