Leases

9 Months Ended

Sep. 30, 2025

12. Leases

The Company has entered into multiple operating leases from which it conducts its business.

SINTX

The Company leases 30,764 square feet of office, warehouse and manufacturing space under a single operating lease. This lease expires in October 2031. The lease has one five-year extension option.

SINTX Armor

The Company, on behalf of SINTX Armor, leases approximately 10,936 square feet of office and manufacturing space from which SINTX Armor conducted its operations. This lease expires in October 2031. Impairment of operating lease right-of-use assets of $0.7 million was recorded during 2024 related to Armor exit costs. In October 2025, the Company entered into a sublease agreement for the full 10,936 square foot space, which also expires in October 2031 (totaling approximately $950,000 over the sublease term). The sublease agreement is effective November 1, 2025, and is subject to landlord approval. A more detailed discussion of the new sublease agreement is set forth in Note 14. Subsequent Events, below.

TA&T

In connection with the disposition of TA&T, the lease facilities, including right of use assets and lease liabilities, were transferred to Tethon (see Note 2).

Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense is recognized on a straight-line basis over the term of the lease. The Company accounts for lease components separately from the non-lease components. The depreciable life of the assets and leasehold improvements are limited by the expected lease term.

As of September 30, 2025, operating lease right-of-use assets were approximately $2.5 million, and operating lease liability was approximately $3.3 million. Non-cash operating lease expense was immaterial during the nine months ended September 30, 2025 and 2024. As of September 30, 2025, the weighted-average discount rate for the Company’s operating lease was 8.8%.

Operating lease future minimum payments together with the present values as of September 30, 2025, are summarized as follows (in thousands):

Years Ending December 31,	Amount
2025 (Remainder)	$	165
2026		668
2027		688
2028		709
2029		730
Thereafter		1,395
Total future minimum lease payments		4,355
Less amounts representing interests		(1,022	)
Present value of lease liability		3,333

Current portion of operating lease liability		384
Long-term portion operating lease liability	$	2,949

Sintx Technologies, Inc. 10-Q