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Stockholders' Equity (Deficit) (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Schedule of Convertible Preferred Stock

At December 31, 2024, the Company’s convertible preferred stock consisted of the following (in thousands, except share and per share amounts):

Series		Shares Authorized				Shares Outstanding				Per Share Original Issuance and Conversion Price				Liquidation Preference				Carrying Value
Series A			26,250,131				26,250,131			$	0.5714			$	15,000			$	14,850
Series B			22,660,592				22,660,592			$	1.2857				29,135				29,054
Series C			48,030,730				48,030,730			$	1.7697				85,000				82,852
Total			96,941,453				96,941,453							$	129,135			$	126,756

Schedule of Weighted-average Assumptions Used to Determine Fair Value of Stock Options Granted

The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of the stock options granted in the years ended December 31, 2025 and 2024 were as follows:

		Year Ended December 31,
		2025				2024
Risk-free interest rate			4.09	%			4.05	%
Expected volatility			103.3	%			101.7	%
Expected term (in years)			6.0				6.0
Expected dividend yield			—				—

Schedule of Allocation of Stock Based Compensation Expense

The allocation of stock-based compensation expense was as follows (in thousands):

		Year Ended December 31,
		2025				2024
Research and development expense		$	1,731			$	288
General and administrative expense			2,217				151
Total stock-based compensation expense		$	3,948			$	439

Schedule of Early Exercise of Stock Option Awards

A summary of the unvested common stock issued pursuant to an early exercise of stock option awards is as follows:

		Number of Unvested Shares
Balance at January 1, 2025			8,417
Early-exercised stock options			2,950
Vested shares			(11,367	)
Balance at December 31, 2025			—

Schedule of Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consisted of the following:

		December 31,
		2025				2024
Conversion of outstanding convertible preferred stock			—				11,439,841
Outstanding stock options			3,038,413				991,058
Shares available for issuance under the Plans			849,328				1,164,562
Shares available for issuance under the ESPP			185,408				—
Total			4,073,149				13,595,461

Employee and Non-Employee Awards

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Schedule of Stock Option Activity

Stock option activity for employee and nonemployee awards and related information is as follows:

		Shares				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value (in thousands)
Outstanding and expected to vest at December 31, 2024			991,058			$	3.83				8.4			$	3,175
Granted			2,315,283			$	10.81
Exercised			(149,876	)		$	2.43
Canceled/forfeited			(118,052	)		$	7.44
Outstanding and expected to vest at December 31, 2025			3,038,413			$	9.08				9.0			$	12,360
Exercisable at December 31, 2025			374,682			$	3.44				6.9			$	3,627

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