Related Party Transactions and Transactions with the Former Parent (Tables)

6 Months Ended

Jun. 30, 2026

Related Party Transactions [Abstract]

Summary Components of Net Transfers

The components of net transfers from Avidity are as follows (in thousands):


		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2026				2025				2026				2025
Net transfers from Former Parent as reflected in the condensed statement of cash flows		$	—			$	12,173			$	301,505			$	23,276
Stock-based compensation			—				1,700				12,177				2,910
Net lease expense for Avidity			—				(743	)			63				(1,510	)
Depreciation for Avidity			—				(132	)			(331	)			(158	)
Net assets distributed from Avidity			—				—				—				742
Net transfers from Former Parent as reflected in the condensed statement of changes in deficit		$	—			$	12,998			$	313,414			$	25,260

Summary of Allocations of Certain Expenses

These allocations to the Company are reflected in the condensed statements of operations and comprehensive loss as follows (in thousands):


		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2026				2025				2026				2025
Cost allocations
Research and development expenses		$	—			$	3,907			$	11,688			$	6,510
General and administrative expenses			—				3,223				10,799				5,311
Total cost allocations		$	—			$	7,130			$	22,487			$	11,821