Operating Lease	12 Months Ended
Dec. 31, 2025
Operating Lease
Operating Lease	4. Operating Lease Solitario leases one facility, its Wheat Ridge, Colorado administrative office (the “WR Lease”), that has a term of more than one year. Solitario has no other significant operating lease costs. The WR Lease was extended in October 2023 to February 2026 and Solitario recorded a net increase in right of use assets of $87,000 during 2023 upon the extension of the WR Lease. The WR Lease is classified as an operating lease and has a remaining term of 2 months at December 31, 2025. The right-of-use office lease asset for the WR Lease is classified as other assets and the related liability as a current office lease liability, for the portion of the liability due in one year and a long-term liability for the balance in the consolidated balance sheet. Lease expense is recognized over the lease term, with variable lease payments recognized in the period those payments are incurred. During 2025 and 2024, Solitario recognized $40,000 and $42,000, respectively, of lease expense for the WR Lease included in general and administrative expense. Cash lease payments of $45,000 and $44,000, respectively, were made on the WR Lease during 2025 and 2024. The discount rate within the WR Lease is not determinable and Solitario applied a discount rate of 7% based upon Solitario’s estimate of its cost of capital in recording the WR Lease. Solitario has $7,000 remaining cash payments on the WR lease as of December 31, 2025, which is recorded as a current liability in the consolidated balance sheet.

Operating Lease

12 Months Ended

Dec. 31, 2025

4. Operating Lease

Solitario leases one facility, its Wheat Ridge, Colorado administrative office (the “WR Lease”), that has a term of more than one year. Solitario has no other significant operating lease costs. The WR Lease was extended in October 2023 to February 2026 and Solitario recorded a net increase in right of use assets of $87,000 during 2023 upon the extension of the WR Lease. The WR Lease is classified as an operating lease and has a remaining term of 2 months at December 31, 2025. The right-of-use office lease asset for the WR Lease is classified as other assets and the related liability as a current office lease liability, for the portion of the liability due in one year and a long-term liability for the balance in the consolidated balance sheet. Lease expense is recognized over the lease term, with variable lease payments recognized in the period those payments are incurred.

During 2025 and 2024, Solitario recognized $40,000 and $42,000, respectively, of lease expense for the WR Lease included in general and administrative expense. Cash lease payments of $45,000 and $44,000, respectively, were made on the WR Lease during 2025 and 2024. The discount rate within the WR Lease is not determinable and Solitario applied a discount rate of 7% based upon Solitario’s estimate of its cost of capital in recording the WR Lease. Solitario has $7,000 remaining cash payments on the WR lease as of December 31, 2025, which is recorded as a current liability in the consolidated balance sheet.