Cabaletta Bio, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Leases (Tables)

12 Months Ended

Dec. 31, 2025

Future lease payments under the non-cancelable leases as of December 31, 2025 are as follows:


	Finance Leases			Operating Leases
2026	$	21,914		$	3,633
2027		3,280			—
Total undiscounted lease payments		25,194			3,633
Less imputed interest		(1,557	)		(172	)
Total lease liability	$	23,637		$	3,461

The following table contains information pertaining to the Company’s operating and finance leases for the years ended December 31, 2025 and 2024.


	Year Ended December 31,
	2025			2024
Finance leases
Interest expense	$	2,004		$	748
Amortization expense		12,391			3,102
Total fixed finance lease cost	$	14,395		$	3,850
Variable lease cost		5,508			930
Total finance lease cost	$	19,903		$	4,780
Operating leases
Fixed lease cost	$	4,211		$	3,247
Total fixed operating lease cost	$	4,211		$	3,247
Variable lease cost		171			296
Short-term lease cost		34			750
Total operating lease cost	$	4,416		$	4,293

Cash paid in the measurement of lease liabilities
Operating cash flows used for operating leases	$	4,227		$	3,291
Operating cash flows used for finance leases		1,713			748
Financing cash flows for finance leases		6,261			897
Other information
Weighted average remaining lease term - finance leases (in years)		1.1			1.7
Weighted average discount rate - finance leases		10.7	%		11.5	%
Weighted average remaining lease term - operating leases (in years)		0.9			1.7
Weighted average discount rate - operating leases		10.3	%		11.0	%