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Stock-Based Compensation Expense (Tables)

9 Months Ended

Sep. 30, 2025

Share-Based Payment Arrangement [Abstract]

Summary of Restricted Stock Unit Activity

A summary of the restricted stock unit activity under the Plans for the nine months ended September 30, 2025 was as follows:

		Shares				Weighted- Average Grant Date Fair Value
Unvested restricted stock units outstanding as of December 31, 2024			42,865			$	132.09
Granted			62,020			$	9.86
Vested			(34,182	)		$	67.10
Forfeited			(11,821	)		$	210.07
Unvested restricted stock units outstanding as of September 30, 2025			58,882			$	25.41

Summary of Stock Option Activity Under Plans

A summary of the stock option activity under the Plans for the nine months ended September 30, 2025 was as follows:

		Shares				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Life (in years)				Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2024			126,255			$	283.02				7.5			$	—
Cancelled			(57,697	)		$	375.57
Outstanding at September 30, 2025			68,558			$	205.13				5.9			$	—

Schedule of Stock-Based Compensation Expense

Stock-based compensation expense included in the Company’s condensed consolidated statements of operations and comprehensive loss was as follows (in thousands):

		Three Months Ended September 30,								Nine Months Ended September 30,
		2025				2024				2025				2024
Research and development		$	247			$	214			$	760			$	627
General and administrative			(213	)			1,277				1,013				4,150
Total		$	34			$	1,491			$	1,773			$	4,777

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-Subparagraph (h)(1)
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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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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

+ References

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-Name Accounting Standards Codification
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