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Leases | 12 Months Ended
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Dec. 31, 2025
Leases [Abstract] |
Leases | 5. Leases The Company and its subsidiaries are lessees under various operating leases for certain office space, manufacturing facilities and equipment. The Company’s leases have established fixed payment terms which are subject to annual rent increases throughout the term of each lease agreement. The Company’s lease agreements have varying non-cancellable rental periods which include options for the Company to extend portions of its lease terms and have similar terms in which they may terminate the lease prior to the end date but must provide advanced notice. The Company recognizes right-of-use assets and lease liabilities associated with lease agreements with an initial term of 12 months or greater, while lease agreements with an initial term of 12 months or less are not recorded in the Company's consolidated balance sheets. When reasonably certain that renewal options will be exercised, the Company includes lease payments associated with such options, including those that are exercisable at its discretion, in the measurement of its operating leases assets and liabilities. Where implicit rates are not included in the lease agreement, the Company determines the incremental borrowing rate at lease commencement date based on various factors, including the yields on non-investment grade of debt available in the marketplace for the same term as the associated lease. Midland Lease On November 13, 2018, AST LLC entered into both an Economic Development Agreement (the “EDA”) and a sublease agreement with Midland Development Corporation. The premise of the EDA was to create jobs in the Midland, Texas area, as well as to have AST LLC improve the land, office and hangar spaces at the leased facility located at the Midland International Air & Space Port in Midland, Texas. The term of the lease commenced on November 21, 2018 and extends through November 20, 2033. Pursuant to the agreement, the base rental payments are abated for ten years of the lease term provided the Company achieves the total number of full-time jobs and related annual payroll costs, and cumulative capital investments in personal property and improvements to the existing land/structures measured annually on March 31 of each year. The Company recognized the lease reimbursements as an offset to rent expense for the related reimbursable month. The table below sets forth information regarding the Company’s lease agreements with an initial term of greater than 12 months (dollars in thousands):
|  | Year ended December 31, |
|  | 2025 |  |  | 2024 |
Operating lease right-of-use assets, net |  | $ | 19,420 |  |  | $ | 14,014 |
Operating lease liabilities |  | $ | 19,928 |  |  | $ | 14,508 |
Weighted-average lease term (in years) |  |  | 7.0 |  |  |  | 7.3 |
Weighted-average discount rate |  |  | 11.0 | % |  |  | 12.4 | %
The Company generally recognizes lease costs associated with its operating leases on a straight-line basis over the lease term. The table below sets forth information regarding the Company's lease costs, which are included as general and administrative expenses in the Company's consolidated statements of operations for the periods presented (in thousands):
|  | Year ended December 31, |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Short-term operating lease expense |  | $ | 4,682 |  |  | $ | 3,468 |  |  | $ | 2,159 |
Operating lease expense |  |  | 2,720 |  |  |  | 2,031 |  |  |  | 2,046 |
Total lease expense |  | $ | 7,402 |  |  | $ | 5,499 |  |  | $ | 4,205 |
As of December 31, 2025, the maturities of the Company’s operating lease liabilities were as follows (in thousands):
2026 |  | $ | 4,340 |
2027 |  |  | 4,187 |
2028 |  |  | 4,088 |
2029 |  |  | 4,059 |
2030 |  |  | 3,040 |
Thereafter |  |  | 8,370 |
Total lease payments |  |  | 28,084 |
Less effects of discounting |  |  | (8,156 | )
Present value of lease liabilities |  | $ | 19,928 |
Included in the Company's consolidated statements of cash flows under operating activities for years ended December 31, 2025, 2024 and 2023 was $2.7 million, $2.1 million and $2.0 million, respectively, of cash paid for amounts included in the measurement of lease liabilities.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/842-20/tableOfContent + Details
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