XML 37 R21.htm IDEA: XBRL DOCUMENT v3.25.3

Stockholders Equity and StockBased Compensation (Tables)

9 Months Ended

Sep. 30, 2025

Stockholders Equity and StockBased Compensation

Schedule Of stock option

		Number of Options				Weighted Average Exercise Price				Weighted-Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding, December 31, 2024			464,940			$	16.24				3.07			$	184,818
Granted			12,418				10.33								—
Exercised			(195,855	)			6.35								1,834,474
Forfeited			—				—								—
Expired			(17,873	)			75.60								—
Outstanding, September 30, 2025			263,630			$	19.28				2.35				2,045,064
Vested and expected to vest, end of the period			263,630			$	19.28				2.35				2,045,064
Options exercisable, end of the period			250,547			$	20.04				2.01			$	1,829,575

Schedule Of Share-based Compensation, Stock Options, Activity

		Nine Months Ended
		September 30,
		2025				2024
Expected volatility		109.24% - 117.44%				75.36% - 92.89%
Risk free interest rate		3.80% - 3.95%				3.76% - 4.54%
Dividend yield rate			—				—
Expected life		2-6 years				2-6 years
Closing price per share - common stock		$9.42 - $15.13				$2.49 - $2.62

Schedule Of outstanding RSA

		Number of Shares				Weighted- Average Grant Date Fair Value				Aggregate Fair Value
Outstanding, December 31, 2024			781,864			$	5.19			$	3,698,217
Awards granted (including performance-based RSAs of 1,125,000 shares)			1,467,940				13.50				19,821,822
Awards vested			(136,768	)			6.10				1,346,731
Awards forfeited			—				—				—
Outstanding, September 30, 2025			2,113,036			$	10.91			$	44,817,494

Schedule of stock based compensation expense

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2025				2024				2025				2024
Research and development expenses		$	0.5			$	0.1			$	0.9			$	0.2
General and administrative expenses			1.1				0.3				2.7				1.0
Total stock-based compensation expense		$	1.6			$	0.4			$	3.6			$	1.2

X

- References

No definition available.

+ Details

Name:	ltbr_ScheduleOfOutstandingRSATableTextBlock
Namespace Prefix:	ltbr_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the change in stock options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfStockOptionsRollForwardTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration