Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Summary of Segment Loss Including Significant Segment Expenses

The following table sets forth the Company’s summary of segment loss, including significant segment expenses for the years ended December 31, 2025 and 2024 (in thousands):


			Year ended December 31,
			2025					2024
Research and development expenses:
KYV-101		$		76,054			$		61,884
Other programs				3,245					3,947
Other research and development expenses(a)				54,421					46,642
General and administrative expenses(b)				36,107					30,131
Interest income				(9,094	)				(15,359	)
Interest expense and other expense, net				574					232
Segment loss and net loss		$		161,307			$		127,477

(a) Primarily includes personnel costs, license fees, R&D consulting services, unallocated CRO and CMO costs and allocated overhead and facilities expenses.

(b) Primarily includes personnel costs, allocated overhead and facilities expenses, legal, IT, accounting and general and administrative expenses.