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Stock-Based Compensation and Employee Stock Purchase Program (Tables)

9 Months Ended

Sep. 30, 2025

Share-Based Payment Arrangement [Abstract]

Summary of Activity Under Stock Incentive Plans

The following is a summary of stock option information and weighted average exercise prices under the Company’s stock incentive plans:

		Shares Subject to Outstanding Options				Weighted- Average Exercise Price Per Share				Aggregate Intrinsic Value
Outstanding — Balance at December 31, 2024			205,475			$	21.00			$	516,378
Options granted			25,000				3.88				—
Options forfeited			(27,446	)			3.39				11,230
Options expired			(16,525	)			92.85				—
Outstanding — Balance at September 30, 2025			186,504			$	14.48			$	108,236
Vested and expected to vest — September 30, 2025			175,421
Exercisable — September 30, 2025			129,593

Weighted-Average Fair Value Assumption of Stock Option Awards

The fair value of stock option awards was estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumption:

		Three Months Ended September 30,								Nine Months Ended September 30,
		2025				2024				2025				2024
Expected term (years)			—				8.04				6.07				8.04
Expected volatility			—				101.31				104.27	%			101.31
Risk-free interest rate			—				3.77	%			4.10	%			3.77	%
Dividend yield			—				—				—				—

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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.

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-Name Accounting Standards Codification
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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