Equity Incentive Awards and Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2026

Summary of Stock Options

Stock option activity during the six months ended June 30, 2026 is as follows:


		Shares subject to options				Weighted- average exercise price				Weighted- average remaining contractual term (years)				Aggregate Intrinsic Value (in thousands)

Outstanding as of December 31, 2025			1,728,737			$	18.62				8.82			$	859
Granted			485,345				7.09				—				—
Exercised			—				—				—				—
Forfeited or Expired			(75,623	)			8.83				—				—
Outstanding as of June 30, 2026			2,138,459				16.35				8.54			$	9
Options vested and expected to vest as of June 30, 2026			2,138,459				16.35				8.54			$	9
Options vested and exercisable as of June 30, 2026			717,385				27.64				7.44			$	-

Summary of Stock Based Compensation Expense Was Allocated

Stock-based compensation expense was allocated as follows for the three and six months ended June 30, 2026 and 2025 (in thousands):


		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2026				2025				2026				2025
Research and development		$	688			$	617			$	1,355			$	1,161
General and administrative			676				544				1,323				958
Total		$	1,364			$	1,161			$	2,678			$	2,119

Restricted Stock Unit [Member]

Summary of Stock Options

Restricted stock unit activity during the six months ended June 30, 2026 is as follows:


		Number of Awards				Weighted- Average Grant Date Fair Value				Aggregate Fair Value (in thousands)

Issued and unvested as of December 31, 2025			76,786			$	10.20			$	784
Granted			13,595				6.98				95
Vested and released			(9,993	)			10.48				(105	)
Issued and unvested as of June 30, 2026			80,388			$	9.63			$	774