Stock-based Compensation (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2025

Dec. 31, 2024

Stock-based Compensation

Schedule of weighted average valuation assumptions for stock options

	For the Three Months
	Ended March 31,
	2024
Per share fair value of common stock	$	0.62
Expected volatility		73.8	%
Expected dividends		0	%
Expected term (in years)		5.9
Risk-free rate		3.93	%

	For the Year Ended
	December 31,
	2024			2023
Per share fair value of common stock	$	0.62		$	0.52
Expected volatility		73.8	%		67.4	%
Expected dividends		0	%		0	%
Expected term (in years)		5.9			6.1
Risk-free rate		3.93	%		3.56	%

Schedule of stock option activity

		Weighted-		Weighted-Average
	Number of	Average Exercise		Remaining Contractual	Intrinsic Value (In
	Options	Price		Term (In Years)	Thousands)
Outstanding as of January 1, 2025	5,435,629	$	0.43	6.06	$	2,914
Exercised	(5,416)		0.63
Forfeited/expired	(15,000)		0.09
Outstanding as of March 31, 2025	5,415,213	$	0.43	5.82	$	2,899
Options exercisable as of March 31, 2025	4,775,534	$	0.39	5.61	$	2,747
Vested and expected to vest as of March 31, 2025	5,415,213	$	0.43	5.82	$	2,899

		Weighted-		Weighted-Average
	Number of	Average		Remaining Contractual	Intrinsic Value
	Options	Exercise Price		Term (In Years)	(In Thousands)
Outstanding as of January 1, 2024	5,509,379	$	0.43	7.04	$	2,699
Granted	25,000		0.92	—		—
Exercised	(63,750)		0.08	—		—
Forfeited/expired	(35,000)		0.82	—		—
Outstanding as of December 31, 2024	5,435,629	$	0.43	6.06	$	2,914
Options exercisable as of December 31, 2024	4,582,807	$	0.38	5.78	$	2,700
Vested and expected to vest as of December 31, 2024	5,435,629	$	0.43	6.06	$	2,914

Schedule of classification of stock-based compensation

The following table illustrates the classification of stock-based compensation in the condensed statements of operations and comprehensive loss (in thousands):

	For the Three Months Ended March 31,
	2025		2024
Research and development	$	29	$	29
General and administrative		51		52
Total stock-based compensation	$	80	$	81

The following table illustrates the classification of stock-based compensation in the statements of operations (in thousands):

	For the Year Ended
	December 31,
	2024		2023
Research and development	$	169	$	111
General and administrative		150		203
Total stock-based compensation	$	319	$	314