GRAE SETH (President and CEO) sold 1.0% of their position (7.62K shares) of LIGHTBRIDGE CORP on the open market

Open‑market sale worth $196.8K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

GRAE SETH

Filed: 10/10/2025ACC: 0000891839-25-000075

InsiderGRAE SETHCIK 1357549

→

IssuerLIGHTBRIDGE CORPCIK 1084554

DirectorOfficer· President and CEO

Since Aug 2018

-7.62K

Net shares

Net seller

$196.8K

Total sold

Open market trades

0B · 1S

Total transactions

7.62K acquired · 15.23K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+7.62K

Price / share

$10.80

Trade value

$82.25K

% of position

1.0%

10/10/2025

753.32K→760.93K

Common Stock

Direct

S · Sale

−7.62K

Price / share

$25.84

Trade value

$196.80K

% of position

1.0%

10/10/2025

760.93K→753.32K

Total

Net shares

+0.00

Net value

-$114.54K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	10/10/2025	M · Option Exercise	+7.62K	$10.80	$82.25K	1.0%	753.32K	760.93K
Common Stock Direct	10/10/2025	S · Sale	−7.62K	$25.84	$196.80K	1.0%	760.93K	753.32K
Total			+0.00		-$114.54K

Derivative Transactions1

Employee Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

7.62K shares

−7.62K

Strike price

10.8

Held after

20.60K

Exercisable

—

10/10/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Employee Stock Option (right to buy) Direct	Common Stock7.62K shares	10/10/2025	M · Option Exercise	−7.62K	10.8	—	20.60K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)3

Employee Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

40.23K

Shares owned

40.23K

Exercise price

12.6

Expiration

—

Exercise window

—

Employee Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

18.20K

Shares owned

18.20K

Exercise price

18.48

Expiration

—

Exercise window

—

Employee Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

17.43K

Shares owned

17.43K

Exercise price

55.2

Expiration

—

Exercise window

—

Total

Underlying

75.86K

Owned

75.86K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Employee Stock Option (right to buy) Direct	Common Stock	12.6	—	—	40.23K	40.23K
Employee Stock Option (right to buy) Direct	Common Stock	18.48	—	—	18.20K	18.20K
Employee Stock Option (right to buy) Direct	Common Stock	55.2	—	—	17.43K	17.43K
Total					75.86K	75.86K