LTBR Form 4: Director Chakraborty Sells 1,948 Shares Under 10b5-1 Plan

Rhea-AI Filing Summary

Sweta Chakraborty, a director of Lightbridge Corporation (LTBR), reported the sale of 1,948 shares of common stock on 08/20/2025. The sale was executed under a Rule 10b5-1 trading plan adopted May 21, 2025. The filing reports a weighted-average sale price of $13.79, with individual trade prices ranging from $13.72 to $13.87. After the reported transactions, the reporting person beneficially owned 30,590 shares. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person on 08/21/2025 and indicates the filing was made by a single reporting person.

Positive

• Transaction executed under a Rule 10b5-1 trading plan adopted May 21, 2025
• Weighted-average price and trade range disclosed ($13.79; $13.72–$13.87)
• Post-transaction beneficial ownership clearly reported (30,590 shares)
• Form 4 signed and filed by a single reporting person; attorney-in-fact signature included

Negative

• None.

Insights

Financial Analyst

TL;DR: Routine, pre-established insider sale under a 10b5-1 plan; transaction disclosed as required.

The reported sale of 1,948 shares at a weighted-average price of $13.79 was executed pursuant to a Rule 10b5-1 plan adopted May 21, 2025, which typically indicates pre-scheduled disposition rather than opportunistic trading. The filing shows the reporting person remains a significant shareholder with 30,590 shares post-transaction. From a market-impact perspective, the Form 4 provides transparent pricing ranges and a clear post-sale ownership figure, enabling investors to update insider-holding datasets accurately.

Corporate Governance Expert

TL;DR: Disclosure aligns with governance best practices; sale executed under a documented trading plan.

The Form 4 discloses that the sale was made under a Rule 10b5-1 trading plan adopted May 21, 2025, and provides weighted-average and per-trade price ranges, supporting compliance with SEC reporting obligations. The signature by an attorney-in-fact is included, and the filing is by one reporting person. The facts presented indicate procedural adherence to insider-trading policy and timely public disclosure, without additional governance flags in the document itself.

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^*

Chakraborty Sweta

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2025

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	08/20/2025		S		1,948(1)	D	$13.79(2)	30,590	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

Explanation of Responses:

1. 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.

2. 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.

	/s/ Larry Goldman, Attorney-in-Fact for Sweta Chakraborty	08/21/2025
	** 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 did Lightbridge director Sweta Chakraborty report on Form 4 (LTBR)?

The reporting person disclosed the sale of 1,948 shares of common stock on 08/20/2025 and a post-sale beneficial ownership of 30,590 shares.

Was the sale by the LTBR director part of a 10b5-1 plan?

Yes. The filing states the sale was effected pursuant to a Rule 10b5-1 trading plan adopted May 21, 2025.

At what price were the LTBR shares sold according to the Form 4?

The Form 4 reports a weighted-average sale price of $13.79, with individual trades ranging from $13.72 to $13.87.

Who signed the Form 4 for Sweta Chakraborty and when was it filed?

The Form 4 was signed by Larry Goldman, attorney-in-fact for Sweta Chakraborty and dated 08/21/2025.

Is this Form 4 filing by multiple reporting persons or a single person?

The filing indicates it was made by one reporting person.