SBACSBA Communications

Improvements or changes in the efficiency, capacity and range with new technologies, architecture, and design of wireless networks or changes in a wireless service provider customer's business model may reduce the demand for our wireless infrastructure. Also, as customers deploy increased capital to develop and implement new technologies, they may allocate less of their budgets to lease space on our towers. For example, new technologies that may promote network sharing, joint development, or resale agreements by our wireless service provider customers, such as signal combining technologies or network functions virtualization, may reduce the need for our wireless infrastructure, or may result in the decommissioning of equipment on certain sites because portions of the customers' networks may become redundant. In addition, other technologies and architectures, such as WiFi, DAS, femtocells, other small cells, or satellite (such as low earth orbiting) and mesh transmission systems orbit) may, in the future, serve as substitutes for, or alternatives to, the traditional macro site communications architecture that is the basis of substantially all of our site leasing business. Certain small cell complementary network technologies or satellite services could shift a portion of our customers’ network investments away from traditional tower-based networks, which may reduce the need for carriers to add more equipment at certain communications sites. The majority of our tower portfolio comprises traditional macro sites and therefore is not as diversified into non-macro sites and other technologies and architectures as some of our competitors. In addition, new technologies that enhance the range, efficiency, and capacity of wireless equipment could reduce demand for our wireless infrastructure. For example, our wireless service provider customers have engaged in increased use of network sharing, roaming, or resale arrangements, resulting in reduced capital spending or a decision to sell or not renew their spectrum licenses or concessions. Any significant reduction in demand for our wireless infrastructure resulting from new technologies or new architectures or changes in a customer's business model may negatively impact our revenues or otherwise have a material adverse effect on our business and results of operations. Any such event may have a disproportionate impact on our business compared to our competitors, whose portfolios may be more technologically and architecturally diversified than ours. In addition, while we are exploring and investing in ancillary services and emerging technologies, including our mobile edge computing initiative and private networks, those investments may not prove to be profitable.

We believe that Management uses Adjusted EBITDA in evaluating, and believes that it is useful to investors or other interested parties in evaluating our financial performance. Adjusted EBITDA is evaluating, the primary measure used by management (1) to evaluate the economic productivity profitability of our operations and (2) for purposes of making decisions about allocating resources to, and assessing the to evaluate our performance of, our operations. Management believes that Adjusted EBITDA helps investors or other interested parties to meaningfully evaluate and compare the results of our operations (1) 1) from period to period and (2) compared to our competitors, by excluding removing the impact of our capital structure (primarily interest charges from our outstanding debt) and asset base (primarily depreciation, amortization, amortization and accretion) from our financial results. In addition, Adjusted EBITDA is a widely used performance measure across the telecommunications real estate sector and management believes that it allows investors to evaluate our comparative performance without regard to items such as depreciation, amortization, and accretion, which can vary across different companies depending upon accounting methods and the book value of assets. Management also believes Adjusted EBITDA is frequently used by investors or other interested parties in the evaluation of REITs. In addition, Adjusted EBITDA is similar to the measure of current financial performance generally used by our lenders to determine compliance with certain covenants under our Senior Credit Agreement and the indentures relating to the 2020 Senior Notes and 2021 Senior Notes. Adjusted EBITDA should be considered only as a supplement to net income computed in accordance with GAAP as a measure of our performance.

PSUs The Company measures and recognizes compensation expense for all share-based payment awards made to employees and directors, including restricted stock units (“RSUs”), performance-based restricted stock units (“PSUs”), stock options, and purchases under the Company’s employee stock purchase plans. The Company records compensation expense for RSUs, PSUs, and stock options on a straight-line basis over the vesting period; however, compensation expense related to certain PSUs are subject to adjustment on performance relative to the established targets. Compensation expense for stock options is based on the estimated fair value of the options on the date of the grant using the Black-Scholes option-pricing model. Compensation expense for RSUs and PSUs is based on the fair market value of the units awarded at the date of the grant. Fair value for a portion of the PSUs was calculated using a Monte Carlo simulation model. Compensation expense for stock options is based on the estimated fair value of the options on the date of the grant using the Black-Scholes option-pricing model.

The Company is obligated under various non-cancelable operating leases for land, office space, equipment, and site leases. In addition, the Company is obligated under various non-cancelable financing leases for vehicles. The annual minimum lease payments, including fixed rate escalations as of December 31, 2024 2025 are as follows (in thousands): follows: