Equity-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

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

Schedule of stock option activity

	OPTIONS			'WEIGHTED- AVERAGE EXERCISE PRICE		WEIGHTED- AVERAGE REMAINING CONTRACTUAL TERM (IN YEARS)		AGGREGATE INTRINSIC VALUE (IN THOUSANDS)
Outstanding as of December 31, 2023		2,506,017		$	21.49		9.80		16,154
Granted		487,590		$	38.86		—		—
Exercised		(1,675	)	$	22.86		—		—
Forfeited		(18,461	)	$	19.51		—		—
Outstanding as of June 30, 2024		2,973,471		$	24.35		9.43		46,412
Vested and expected to vest as of June 30, 2024		2,973,471		$	24.35		9.43		46,412
Exercisable as of June 30, 2024		226,208		$	22.98		9.40		3,706

Schedule of restricted stock unit activity

	NUMBER OF SHARES			WEIGHTED- AVERAGE GRANT DATE FAIR VALUE PER SHARE
Unvested restricted stock units as of December 31, 2023		144,090		$	22.86
Vested		(17,989	)		22.86
Unvested restricted stock units as of June 30, 2024		126,101		$	22.86

Schedule of equity-based compensation expense

	THREE MONTHS ENDED JUNE 30,				SIX MONTHS ENDED JUNE 30,
	2024		2023		2024		2023
Research and development expense	$	2,154	$	205	$	4,084	$	338
General and administrative expense		3,544		908		5,800		2,049
Total	$	5,698	$	1,113	$	9,884	$	2,387

Incentive Units

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

Schedule of fair value assumptions of share based payment

	THREE MONTHS ENDED JUNE 30,	SIX MONTHS ENDED JUNE 30,
	2023	2023
Risk-free interest rate	4.1% - 4.9%	4.1% - 4.9%
Expected dividend yield	0.0%	0.0%
Expected term (in years)	0.17 - 2.00	0.17 - 2.00
Expected volatility	84% - 90%	84% - 90%

Unvested restricted common stock

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

Schedule of activity of equity instrument other than option

	NUMBER OF SHARES			WEIGHTED- AVERAGE GRANT DATE FAIR VALUE PER SHARE
Unvested restricted common stock as of December 31, 2023		2,316,902		$	5.31
Vested		(512,153	)	$	5.58
Unvested restricted common stock as of June 30, 2024		1,804,749		$	5.23

2023 Equity Incentive Plan | Employee Stock Option

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

Schedule of fair value assumptions of share based payment

	THREE MONTHS ENDED JUNE 30,	SIX MONTHS ENDED JUNE 30,
	2024	2024
Common stock fair value	$39.35 - $50.30	$33.50 - $66.45
Risk-free interest rate	4.3% - 4.7%	3.9% - 4.7%
Expected dividend yield	0.00%	0.00%
Expected term (in years)	5.5 - 6.25	5.5 - 6.25
Expected volatility	95.1% - 96.1%	95.0% - 96.4%