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Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Transations

The following table summarizes the stock option transactions for the 2023 Plans:

		Total Options					Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (years)					Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2023			1,739,270			$		15.71				6.99			$		76
Granted			1,326,500					4.12				9.47					4
Exercised			(12,852	)				1.55				—					—
Cancelled			(228,475	)				75.27				—					—
Outstanding at December 31, 2024			2,824,443			$		5.51				8.15			$		316
Vested and exercisable at December 31, 2024			1,350,852			$		6.46				7.09			$		210

Schedule of Assumptions Using Black-Scholes to Estimate Fair Value of the Stock Option Grants

The following is the range of underlying assumptions in Black-Scholes to determine the fair value of the stock option grants for the years ended December 31, 2024 and 2023:

		Year Ended December 31,
		2024		2023
Risk free interest rate		3.15%		3.50%-3.56%
Expected volatility		97%		75%-76%
Expected term (years)		6.01		6.25
Expected dividend yield		0%		0%

Summary of Restricted Stock Units (RSU) Activity

The following table summarizes restricted stock unit activity for the CalciMedica Plans:

		Number of Restricted Stock Units					Weighted Average Exercise Price
Outstanding at December 31, 2023			—			$		—
Granted			40,000					3.50
Exercised			—					—
Forfeited/Cancelled (expired)			—					—
Outstanding at December 31, 2024			40,000			$		3.50
Vested and exercisable at December 31, 2024			—			$		—

Summary of Stock-Based Compensation Expense Recognized for Options and RSUs Granted

Stock-based compensation expense recognized for options and restricted stock units granted was as follows (in thousands):

		Year Ended December 31,
		2024				2023
Research and development		$	840			$	2,449
General and administrative			1,473				9,590
Total stock-based compensation expense		$	2,313			$	12,039

Schedule of Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consists of the following at December 31, 2024:

		December 31,
		2024
Common stock warrants			3,352,621
Stock options issued and outstanding			2,824,443
Shares available for issuance under the 2023 Plan			807,414
Shares available under the 2023 ESPP			122,545
Total			7,107,023

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