Leases

6 Months Ended

Jun. 30, 2026

8. Leases

Operating Leases

Agreements for Office and Laboratory Space

In May 2023, the Company entered into a lease agreement pursuant to which it leases 11,564 square feet of office space for its headquarters in Wayne, Pennsylvania. The lease commenced in November 2023 and has a term that runs through February 2029.

In February 2019, the Company entered into a sublease agreement for 20,433 square feet of office and laboratory space in St. Louis, Missouri. The lease commenced in June 2019 and has a term that runs through May 2029.

Supplemental balance sheet information related to operating leases is as follows:


	June 30,		December 31,
(In thousands)	2026		2025
Operating Leases:
Gross cost	$	4,530	$	4,530
Accumulated amortization		(2,543)		(2,245)
Other assets	$	1,987	$	2,285

Current portion of lease liabilities	$	588	$	551
Other liabilities		1,262		1,565
Total operating lease liabilities	$	1,850	$	2,116

Amortization expense related to operating lease right-of-use assets and accretion of operating lease liabilities totaled $0.2 million and $0.1 million for the three months ended June 30, 2026 and 2025, respectively, and $0.3 million for each of the six months ended June 30, 2026 and 2025.