UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 20092011

OR

For the transition period from             to            

Commission file number: 000-30110

SBA COMMUNICATIONS CORPORATION

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code (561) 995-7670

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.    Yes  ¨    No  x

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ¨x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  x    Accelerated filer  ¨    Non-Accelerated filer  ¨    Smaller reporting company  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act)    Yes  ¨    No  x

The aggregate market value of the voting stock held by non-affiliates of the Registrant was approximately $2.8$4.2 billion as of June 30, 2009.2011.

The number of shares outstanding of the Registrant’s common stock (as of February 24, 2010)16, 2012): Class A common stock —117,719,254– 109,734,800 shares

Documents Incorporated By Reference

Portions of the Registrant’s definitive proxy statement for its 20102012 annual meeting of shareholders, which proxy statement will be filed no later than 120 days after the close of the Registrant’s fiscal year ended December 31, 2009,2011, are hereby incorporated by reference in Part III of this Annual Report on Form 10-K.

Table of Contents

ITEM 1. BUSINESS

General

We are a leading independent owner and operator of wireless communications towers. Our principal operations are in the continental United States.States and its territories. In addition, we haveown and operate towers in Canada, Puerto RicoCosta Rica, El Salvador, Guatemala, Nicaragua and the U.S. Virgin Islands.Panama. Our principalprimary business line is our site leasing business, which contributed 97.4%97.8% of our total segment operating profit for the year ended December 31, 2009.2011. In our site leasing business, we lease antenna space primarily to wireless service providers on towers and other structures that we own, manage or lease from others. The towers that we own have been constructed by us at the request of a wireless service provider, built or constructed based on our own initiative or acquired. As of December 31, 2009,2011, we owned 8,32410,524 tower sites, the substantial majority of which have been built by us or built by other tower owners or operators who, like us, have built such towers to lease space to multiple wireless service providers. We also managemanaged or leaseleased approximately 5,1004,800 actual or potential communications sites, approximately 550500 of which were revenue producing as of December 31, 2009.2011. Our other business line is our site development business, through which we assist wireless service providers in developing and maintaining their own wireless service networks.

Site Leasing Services

Our primary focus is the leasing of antenna space on our multi-tenant towers to a variety of wireless service providers under long-term lease contracts.contracts in the United States, Canada and Central America. Site leasing revenues are received primarily from wireless service provider tenants, including AT&T, Sprint, Verizon Wireless, T-Mobile, Digicel, Claro, and Verizon Wireless.Telefonica. Wireless service providers enter into numerous different tenant leases with us, each of which relates to the lease or use of space at an individual tower site. TenantIn the United States and Canada our tenant leases are generally for an initial term of five years with five 5-year renewal periods at the option of the tenant. These tenant leases typically contain specific rent escalators, which average 3%–4%3-4% per year, including the renewal option periods. Tenant leases in our Central America markets typically have an initial term of 10 years with 5-year renewal periods, and similar rent escalators to that of leases in the United States and Canada.

We expand our tower portfolio, both domestically and internationally, through the construction of new towers, or new builds, and through the acquisition of towers from third parties. In our new build program, we construct towers in locations that were strategically chosen by us or under build-to-suit arrangements. Under build-to-suit arrangements, we build towers for wireless service providers at locations that they have identified. We retain ownership of the tower and the exclusive right to co-locate additional tenants on the tower. When we construct towers in locations chosen by us, we utilize our knowledge of our customers’ network requirements to identify locations where we believe multiple wireless service providers need, or will need, to locate antennas to meet capacity or service demands. We seek to identify attractive locations for new towers and complete pre-construction procedures necessary to secure the site concurrently with our leasing efforts. We intend togenerally will have at least one signed tenant lease onfor each new build tower on the day that it is completed and expect that some will have multiple tenants. WeDuring 2012, we intend to build at least 120 - 140between 415 and 435 new towers, during 2010.domestically and internationally.

In our tower acquisition program, we pursue towers that meet or exceed our internal guidelines regarding current and future potential returns. For each acquisition, we prepare various analyses that include projections of a five-year unlevered internal rate of return, review of available capacity, future lease up projections and a summary of current and future tenant/technology mix.

The table below provides information regarding the development and status of our tower sites portfolio over the past three years.

As of December 31, 2009,2011, we had an average of 2.52.3 tenants per tower.

Our site leasing business generates substantially all of our total segment operating profit. Our site leasing business generated 85.9%88.3% of our total revenues during the past year ended December 31, 2011 and has represented 95.5%97.4% or more of our total segment operating profit for the past three years. For the year ended December 31, 2011, site leasing revenues generated outside the U.S. and its territories were less than 4% of total revenue.

International Operations

We believe that we can create substantial value by expanding our site leasing services into select international markets which we believe have a high-growth wireless industry and relatively stable political and regulatory environment. We currently own 1,330 towers in Canada, Costa Rica, El Salvador, Guatemala, Nicaragua and Panama, and intend to continue expanding in these and other international markets. These international markets typically have less mature wireless networks with limited wireline infrastructure and wireless data penetration. Accordingly, our expansion in these markets is primarily driven by (i) wireless service providers seeking to increase the quality and coverage of their networks in developing countries, (ii) consumers’ increased use of high data applications, such as email, internet access and video, and (iii) recent spectrum auctions, which have resulted in new market entrants, as well as initial data network deployments. For example, we expect a meaningful build-out of our new towers and communication sites in Costa Rica as a result of recent spectrum auctions in that country. We expect to continue expanding internationally through buying or building towers, managing communication sites and leasing space to wireless service providers on assets we control.

We consider various factors when identifying a market for our international expansion, including:

Site Development Services

Our site development business is complementary to our site leasing business and provides us the ability to keep in close contact with the wireless service providers who generate substantially all of our site leasing revenue and to capture ancillary revenues that are generated by our site leasing activities, such as antenna and equipment installation at our tower locations. Our site development business is conducted in the United States only and consists of two segments, site development consulting and site development construction. Site development services revenues are received primarily from providing a full range of end to end services to wireless service providers or companies providing development or project management services to wireless service providers. We principally perform services for third parties in our core historical areas of wireless expertise, specifically, site acquisition, zoning, technical services and construction.

In the consulting segment of our site development business, we offer clients the following range of services: (1) network pre-design; (2) site audits; (3) identification of potential locations for towers and antennas; (4) support in buying or leasing of the location; and (5) assistance in obtaining zoning approvals and permits. In the construction segment of our site development business we provide a number of services, including, but not limited to the following: (1) tower and related site construction; (2) antenna installation; and (3) radio equipment installation, commissioning and maintenance. Personnel in our site development business also supportidentify new business opportunities and provide market intelligence for our leasing and new tower build functions through an integrated plan across the divisions.functions.

We provide our site development consulting and construction services on a local basis, through regional offices, territory offices and project offices. The regional offices are responsible for all site development operations, including hiring employees and opening or closing project offices, and a substantial portion of the sales in such area.

For financial information about our operating segments, please see Note 2322 of our Consolidated Financial Statements included in this Form 10-K.

Industry Overview

We believe that growing wireless traffic the(particularly data and video), successful recent spectrum auctions and technology developments will require wireless service providers to improve their network infrastructure and increase their network capacity resulting in an increase in the number of communication sites that they use or the number of antennas at existing communication sites. First, consumersThe following is a discussion of certain growth trends in the wireless communications industry:

Despite the currentrecent recessionary conditions affecting the global marketplace, based on these factors, we believe that the U.S. wireless industry will continue to grow and is well-capitalized, highly competitive and focused on quality and advanced services. Therefore, we expect that we will see a multi-year trend of strong additional cell site demand from our customers, which we believe will translate into strong leasing growth for us.

Business Strategy

Our primary strategy is to capture the maximum benefits from our position as a leading owner and operator of wireless communications towers. Key elements of our strategy include:

Focusing on our Site Leasing Business with Stable, Recurring Revenues.We intend to continue to focus on expanding our site leasing business due to its attractive characteristics such as long-term contracts, built-in rent escalators, high operating margins and low customer churn. The long-term nature of the revenue stream of our site leasing business makes it less volatile than our site development business, which is more cyclical. By focusing on our site leasing business, we believe that we can maintain a stable, recurring cash flow stream and reduce our exposure to cyclical changes in customer spending. Key elements of our strategy include:

Maximizing Use of Tower Capacity. We generally have constructed or acquired towers that accommodate multiple tenants and a substantial majority of our towers are high capacity lattice or guyed towers. Most of our towers have significant capacity available for additional antennas and we believe that increased use of our towers can be achieved at a low incremental cost. We actively market space on our towers through our internal sales force.

Disciplined Growth of our Tower Portfolio.During 2010,2012, we intend to grow our tower portfolio, domestically and internationally, by 5%through the consummation of the Mobilitie transaction, additional tower acquisitions and the construction of between 415 to 10%. We435 new towers. In connection with our international expansion, we have targeted select international markets that we believe have relatively stable political environments and a growing wireless communication industry.We intend to use our available cash from operating activities and available liquidity, including borrowings, to build and/or acquire new towers at prices that we believe will be

accretive to our shareholders both short and long term and which allow us to maintain our long-term target leverage ratios. Furthermore, we believe that our tower operations are highly scalable. Consequently, we believe that we are able to materially increase our tower portfolio without proportionately increasing selling, general and administrative expenses.

Capitalizing on our Scale and Management Experience.We are a large owner, operator and developer of tower and other communication sites, with substantial capital, human and operating resources. We have been developing communication sites for wireless service providers in the U.S. since 1989 and owned and operated tower sites for ourselves since 1997. We believe our size, experience, capabilities and resources make us a preferred partner for wireless service providers both in the U.S. and internationally. Our management team has extensive experience in site leasing and site development, with some of the longest tenures in the tower and site development industries. Management believes that its industry expertise and strong relationships with wireless service providers will allow us to expand our position as a leading provider of site leasing and site development services.

Controlling our Underlying Land Positions. We have purchased and intend to continue to purchase and/or enter into long-term leases for the land that underlies our towers, to the extent available at commercially reasonable prices. We believe that these purchases and/or long-term leases will increase our margins, improve our

cash flow from operations and minimize our exposure to increases in ground lease rents in the future. As ofFor the quarter ended December 31, 2009,2011, approximately 70.0% of our tower sites were located on land that we own or control for a minimum period of fifty years, landmore than 20 years. The average remaining life under 27.6% of our communication sites.ground leases, including renewal options under our control, has been extended to 33 years.

Using our Local Presence to Build Strong Relationships with Major Wireless Service Providers. Given the nature of towers as location specific communications facilities, we believe that substantially all of what we do is done best locally. Consequently, we have a broad field organization that allows us to develop and capitalize on our experience, expertise and relationships in each of our local markets which in turn enhances our customer relationships. We are seeking to replicate this expertise internationally. Due to our presence in local markets, we believe we are well positioned to capture additional site leasing business and new tower build opportunities in our markets and identify and participate in site development projects across our markets.

Capitalizing on our Management Experience. Our management team has extensive experience in site leasing and site development. Management believes that its industry expertise and strong relationships with wireless service providers will allow us to expand our position as a leading provider of site leasing and site development services.

Customers

Since commencing operations, we have performed site leasing and site development services for all of the large U.S. wireless service providers. In both our site development and site leasing businesses, we work with large national providers and smaller regional, local or private operators.

We depend on a relatively small number of customers for our site leasing and site development revenues. The following customers represented at least 10% of our total revenues during at least one of the last three years:

During the past two years, we provided services for a number of customers, including:

Sales and Marketing

Our sales and marketing goals are to:

We approach sales on a company-wide basis, involving many of our employees. We have a dedicated sales force that is supplemented by members of our executive management team. Our dedicated salespeople are based regionally as well as in the corporate office. We also rely on our regional vice presidents, general managers and other operations personnel to sell our services and cultivate customers. Our strategy is to delegate sales efforts to those employees of ours who have the best relationships with our customers. Most wireless service providers have national corporate headquarters with regional and local offices. We believe that wireless service providers make most decisions for site development and site leasing services at the regional and local levels with input from their

corporate headquarters. Our sales representatives work with wireless service provider representatives at the regional and local levels and at the national level when appropriate. Our sales staff compensation is heavily weighted to incentive-based goals and measurements.

Our primary marketing and sales support is centralized and directed from our headquarters office in Boca Raton, Florida and is supplemented by our regional and territory offices. We have a full-time staff dedicated to our marketing and sales efforts. The marketing and sales support staff is charged with implementing our marketing strategies, prospecting and producing sales presentation materials and proposals. In addition to our marketing and sales staff, we rely upon our executive and operations personnel at the regional and local office levels to identify sales opportunities within existing customer accounts.

Competition

Site Leasing – Our primary competitors for our site leasing activities are (1) the national independent tower companies including American Tower Corporation, Crown Castle International and Global Tower Partners, (2) a large number of regional independent tower owners, (3) wireless service providers that own and operate their own towers and lease, or may in the future decide to lease, antenna space to other providers, and (4) alternative facilities such as rooftops, outdoor and indoor distributed antenna system (“DAS”) networks, billboards and electric transmission towers. There has been significant consolidation among the large independent tower companies in the past five years. Specifically, American Tower completed its merger with SpectraSite, Inc. in 2005, we completed our acquisition of AAT Communications Corporation in 2006 and Crown Castle completed its merger with Global Signal, Inc. in 2007. As a result of these consolidations,several large mergers and acquisitions, American Tower and Crown Castle have substantially more towers and greater financial resources than we do. Wireless service providers that own and operate their own tower networks are also generally larger and have greater financial resources than we do. We believe that tower location and capacity, quality of service to our tenants, and, to a lesser extent, price have been and will continue to be the most significant competitive factors affecting the site leasing business. Internationally, to date, the competition we have encountered has been from both independent tower companies and wireless service providers that own and operate their own tower networks. In our markets outside the U.S. and its territories, the majority of existing towers are owned by wireless service providers.

Site Development – The site development business is extremely competitive and price sensitive. We believe that the majority of our competitors in the U.S. site development business operate within local market areas exclusively, while some firms appear to offer their services nationally, including Bechtel Corporation, Black & Veatch Corporation, Goodman Networks, General Dynamics Corporation, Nsoro, and Wireless Facilities, Inc.Nsoro. The market includes participants from a variety of market segments offering individual, or combinations of, competing services. The field of competitors includes site development consultants, zoning consultants, real estate firms, right-of-way

consulting firms, construction companies, tower owners/managers, radio frequency engineering consultants, telecommunications equipment vendors, which provide end-to-end site development services through multiple subcontractors, and wireless service providers’ internal staff. We believe that providers base their decisions for site development services on a number of criteria, including: company experience, price, track record, local reputation, geographic reach and time for completion of a project.

Employees

Our executive, corporate development, accounting, finance, human resources, legal and regulatory, information technology and site administration personnel, and our network operations center, are located in our headquarters in Boca Raton, Florida. Certain sales, new tower build support and tower maintenance personnel are also located in our Boca Raton office. Our remaining employees are based in our regional and local offices.

As of December 31, 2009,2011, we had 617814 employees, none of whom are represented by a collective bargaining agreement. Of these 814 employees, 87 were based outside of the U.S. and its territories. We consider our employee relations to be good.

Regulatory and Environmental Matters

Federal Regulations.Both the FCC and the Federal Aviation Administration (the “FAA”) regulate antenna towers and structures that support wireless communications and radio or television antennas. Many FAA requirements are implemented in FCC regulations. These regulations govern the construction, lighting and painting or other marking of towers and structures and may, depending on the characteristics of particular towers or structures, require prior approval and registration of towers or structures before they may be constructed, altered or used. Wireless communications equipment and radio or television stations operating on towers or structures are separately regulated and may require independent customer licensing depending upon the particular frequency or frequency band used. In addition, any applicant for an FCC antenna tower or structure registration must certify that, consistent with the Anti-Drug Abuse Act of 1988, neither the applicant nor its principals are subject to a denial of Federal benefits because of a conviction for the possession or distribution of a controlled substance.

Pursuant to the requirements of the Communications Act of 1934, as amended, the FCC, in conjunction with the FAA, has developed standards to consider proposals involving new or modified antenna towers or structures. These standards mandate that the FCC and the FAA consider the height of the proposed tower or structure, the relationship of the tower or structure to existing natural or man-made obstructions and the proximity of the tower or structure to runways and airports. Proposals to construct or to modify existing towers or structures above certain heights must be reviewed by the FAA to ensure the structure will not present a hazard to air navigation. The FAA may condition its issuance of a no-hazard determination upon compliance with specified lighting and/or painting requirements. Antenna towers that meet certain height and location criteria must also be registered with the FCC. A tower or structure that requires FAA clearance will not be registered by the FCC until it is cleared by the FAA. Upon registration, the FCC may also require special lighting and/or painting. Owners of wireless communications antenna towers and structures may have an obligation to maintain painting and lighting or other marking in conformance with FAA and FCC regulations. Antenna tower and structure owners and licensees that operate on those towers or structures also bear the responsibility of monitoring any lighting systems and notifying the FAA of any lighting outage or malfunction.

Owners and operators of antenna towers and structures may be subject to, and therefore must comply with, environmental laws. Any licensed radio facility on an antenna tower or structure is subject to environmental review pursuant to the National Environmental Policy Act of 1969, among other statutes, which requires federal agencies to evaluate the environmental impact of their decisions under certain circumstances. The FCC has issued regulations implementing the National Environmental Policy Act. These regulations place responsibility on

applicants to investigate potential environmental effects of their operations and to disclose any potential significant effects on the environment in an environmental assessment prior to constructing or modifying an antenna tower or structure and prior to commencing certain operations of wireless communications or radio or television stations from the tower or structure. In the event the FCC determines the proposed structure or operation would have a significant environmental impact based on the standards the FCC has developed, the FCC would be required to prepare an environmental impact statement, which will be subject to public comment. This process could significantly delay the registration of a particular tower or structure.

We generally indemnify our customers against any failure to comply with applicable regulatory standards relating to the construction, modification, or placement of antenna towers or structures. Failure to comply with the applicable requirements may lead to civil penalties.

The Telecommunications Act of 1996 amended the Communications Act of 1934 by preserving state and local zoning authorities’ jurisdiction over the construction, modification and placement of towers. The law, however, limits local zoning authority by prohibiting any action that would discriminate among different providers of personal wireless services or ban altogether the construction, modification or placement of radio communication towers. Finally, the Telecommunications Act of 1996 requires the federal government to help licensees for wireless communications services gain access to preferred sites for their facilities. This may require

that federal agencies and departments work directly with licensees to make federal property available for tower facilities.

As an owner and operator of real property, we are subject to certain environmental laws that impose strict, joint and several liability for the cleanup of on-site or off-site contamination and related personal or property damage. We are also subject to certain environmental laws that govern tower or structure placement, including pre-construction environmental studies. Operators of towers or structures must also take into consideration certain radio frequency (“RF”) emissions regulations that impose a variety of procedural and operating requirements. Certain proposals to operate wireless communications and radio or television stations from antenna towers and structures are also reviewed by the FCC to ensure compliance with requirements relating to human exposure to RF emissions. Exposure to high levels of RF energy can produce negative health effects. The potential connection between low-level RF energy and certain negative health effects, including some forms of cancer, has been the subject of substantial study by the scientific community in recent years. We believe that we are in substantial compliance with and we have no material liability under any applicable environmental laws. These costs of compliance with existing or future environmental laws and liability related thereto may have a material adverse effect on our prospects, financial condition or results of operations.

State and Local Regulations.Most states regulate certain aspects of real estate acquisition, leasing activities and construction activities. Where required, we conduct the site acquisition portions of our site development services business through licensed real estate brokers’ agents, who may be our employees or hired as independent contractors, and conduct the construction portions of our site development services through licensed contractors, who may be our employees or independent contractors. Local regulations include city and other local ordinances, zoning restrictions and restrictive covenants imposed by community developers. These regulations vary greatly from jurisdiction to jurisdiction, but typically require tower and structure owners to obtain approval from local officials or community standards organizations, or certain other entities prior to tower or structure construction and establish regulations regarding maintenance and removal of towers or structures. In addition, many local zoning authorities require tower and structure owners to post bonds or cash collateral to secure their removal obligations. Local zoning authorities generally have been unreceptive to construction of new antenna towers and structures in their communities because of the height and visibility of the towers or structures, and have, in some instances, instituted moratoria.

International. Regulatory regimes outside of the U.S. and its territories vary by country and locality, however these regulations typically require tower owners and/or licensees to obtain approval from local officials or

government agencies prior to tower construction or the addition of a new antenna to an existing tower. Based on our experience to date, these regimes have been similar to, but not more rigorous, burdensome or comprehensive than, those in the U.S. Our international operations are also subject to various regulations and guidelines regarding employee relations and other occupational health and safety matters. As we expand our operations into additional international geographic areas, we will be subject to regulations in these jurisdictions.

Backlog

Backlog related to our site leasing business consists of lease agreements and amendments, which have been signed, but have not yet commenced. As of December 31, 2009,2011, we had 344251 new leases which had been executed with customers but which had not begun generating revenue. These leases will contractually provide for approximately $7.6$5.1 million of annual revenue. By comparison, atas of December 31, 20082010, we had 338253 new leases which had been executed with customers but which had not begun generating revenue. These leases contractually provided for approximately $6.7$4.9 million of annual revenue.

Our backlog for site development services consists of the value of work that has not yet been completed on executed contracts. As of December 31, 2009,2011, we had approximately $13.9$14.5 million of contractually committed revenue as compared to approximately $17.4$17.8 million as of December 31, 2008.2010.

Availability of Reports and Other Information

SBA Communications Corporation was incorporated in the State of Florida in March 1997. Our corporate website iswww.sbasite.com. We make available, free of charge, access to our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Proxy Statement on Schedule 14A and amendments to those materials filed or furnished pursuant to Section 13(a) or 15(d) of the Securities and Exchange Act of 1934, as amended, on our website under “Investor Relations—Relations – SEC Filings,” as soon as reasonably practicable after we file electronically such material with, or furnish it to, the United States Securities and Exchange Commission (the “Commission”). In addition, the Commission’s website iswww.sec.gov. The Commission makes available on this website, free of charge, reports, proxy and information statements, and other information

regarding issuers, such as us, that file electronically with the Commission. Additionally, our reports, proxy and information statements may be read and copied at the Commission’s public reference room at 100 F Street, NE, Washington, DC 20549 during the hours of 10 a.m. to 3 p.m. on official business days. Information regarding the operation of the public reference room may be obtained by calling the Commission at 1-800-SEC-0330. Information on our website or the Commission’s website is not part of this document.

ITEM 1A. RISK FACTORS

Risks Related to Our Business

If our wireless service provider customers combine their operations to a significant degree, our future operating results and our ability to service our indebtedness could be adversely affected.

Significant consolidation among our wireless service provider customers may result in our customers failing to renew existing leases for tower space or reducing future capital expenditures in the aggregate because their existing networks and expansion plans may overlap or be very similar. For example, inIn connection with the combinations of Verizon Wireless and ALLTEL (to form Verizon Wireless), Cingular and AT&T Wireless (to form AT&T Mobility) and Sprint PCS and Nextel (to form Sprint Nextel), the combined companies have or are considering rationalizingrationalized and may continue to rationalize duplicative parts of their networks, which has led and may continue to lead to the non-renewal of certain leases on our towers. Furthermore, to the extent that otherIf our wireless service providersprovider customers continue to consolidate as a result of, among other factors, limited wireless spectrum for commercial use in the future, they may not renew any duplicative leases that they have on our towers and/or may not lease as much space on our towers in the future. If these consolidationsU.S., this consolidation could significantly impact the number of tower leases that are not renewed or the number of new leases that theour wireless service providersprovider customers require to expand their network,networks, which could materially and adversely affect our future operating resultsresults.

A slowdown in demand for wireless communications services or for tower space could materially and adversely affect our ability to service our indebtedness could be adversely affected.future growth and revenues

Similar consequences may occur ifIf wireless service providers engagesubscribers significantly reduce their minutes of use, or fail to widely adopt and use wireless data applications, our wireless service provider customers would experience a decrease in extensivedemand for their services. Regardless of consumer demand, each wireless service customer must have substantial capital resources and capabilities to build out their wireless networks. Certain wireless carriers that currently own nationwide spectrum positions have announced the intention to build nationwide networks, but have also announced that they do not have all of the necessary financing in place to complete such networks. In addition, our wireless service customers have engaged in increased use of network sharing, or roaming or resale arrangements as an alternative to leasingarrangements. As a result of all of the above, wireless carriers may scale back their business plans or otherwise reduce their spending, which could materially and adversely affect demand for our antenna space. Wireless voice service providers frequently enter into roaming agreements with competitors allowing them to use another’stower space and our wireless communications facilities to accommodate customers who are out of range of their home provider’s services. Wireless voice service providers may view these roaming agreements as a superior alternative to leasing antenna space on communication sites owned or controlled by us or others. The proliferation of these roaming agreementsservices business, which could have a material adverse effect on our business, results of operations and financial condition.

We have a substantial level of indebtedness which may have an adverse effect on our business or limit our ability to take advantage of business, strategic or financing opportunities.

As indicated below, we have and will continue to have a significant amount of indebtedness relative to our equity. The following table sets forth our total principal amount of debt and shareholders’ equity as of December 31, 2010 and 2011.

Our substantial level of indebtedness increases the possibility that we may be unable to generate cash sufficient to pay the principal, interest or other amounts when due. Subject to certain restrictions under our existing indebtedness, we and our subsidiaries may also incur significant additional indebtedness in the future, revenue.some of which may be secured debt. This may have the effect of increasing our total leverage.

As a consequence of our indebtedness, (1) demands on our cash resources may increase, (2) we are subject to restrictive covenants that further limit our financial and operating flexibility and (3) we may choose to institute self-imposed limits on our indebtedness based on certain considerations including market interest rates, our relative leverage and our strategic plans. For example, as a result of our substantial level of indebtedness and the uncertainties arising in the credit markets and the U.S. economy:

These restrictions could have a material adverse effect on our business by limiting our ability to take advantage of financing, new tower development, mergers and acquisitions or other opportunities.

In addition, fluctuations in market interest rates may increase interest expense relating to our floating rate indebtedness, which we expect to incur under our Revolving Credit Facility and Term Loan, and may make it difficult to refinance our existing indebtedness at a commercially reasonable rate or at all. There is no guarantee that the future refinancing of our indebtedness will have fixed interest rates or that interest rates on such indebtedness will be equal to or lower than the rates on our current indebtedness.

We depend on a relatively small number of customers for most of our revenue, therefore ifand the loss, consolidation or financial instability of any of our significant customers reduced their demand for tower space or became financially unstable it may materially decrease our revenues.

We derive a significant portion of our revenue from a small number of customers. The loss of any one of our significant customers, as a result of bankruptcy, merger with other customers of ours or otherwise, could materially decrease our revenue and have an adverse effect on our growth.

The following is a list of significant customers (representing at least 10% of revenue in any of the last three years) and the percentage of our total revenues for the specified time periods derived from these customers:

		Percentage of Total Revenues
		For the year ended December 31,
		2009				2010				2011
AT&T			23.8	%			23.9	%			23.8	%
Sprint			21.9	%			20.4	%			19.8	%
Verizon Wireless			15.4	%			14.8	%			14.8	%
T-Mobile			13.7	%			11.6	%			10.7	%

We also have client concentrations with respect to revenues in each of our financial reporting segments:

Revenue from these clients is derived from numerous different site leasing contracts and site development contracts. Each site leasing contract relates to the lease of space at an individual tower site and is generally for an initial term of five years renewable for five 5-year periods at the option of the tenant. However, if any of our significant site leasing clients were to experience financial difficulty, substantially reduce their capital expenditures or reduce their dependence on leased tower space and fail to renew their leases with us, our revenues, future revenue growth and results of operations would be adversely affected.

Our site development customers engage us on a project-by-project basis, and a customer can generally terminate an assignment at any time without penalty. In addition, a customer’s need for site development services can decrease, and we may not be successful in establishing relationships with new customers. Furthermore, our existing customers may not continue to engage us for additional projects.

If we are unable to protect our rights to the land under our towers, it could adversely affect our business and operating results.

Our real property interests relating to our towers consist primarily of leasehold and sub-leasehold interests, fee interests, easements, licenses and rights-of-way. From time to time, we experience disputes with landowners regarding the terms of ground agreements for the land under our towers, which can affect our ability to access and operate such towers. Further, landowners may not want to renew their ground agreements with us, they may lose their rights to the land, or they may transfer their land interests to third parties, including ground lease aggregators and our competitors, which could affect our ability to renew ground agreements on commercially viable terms or at all. Our inability to protect our rights to the land under our towers may have a future material adverse effect on our business, results of operations or financial condition.

In addition, we may not always have the ability to analyze and verify all information regarding title, access and other issues regarding the land underlying acquired towers. To the extent that we do not have complete access to, or use of, the land underlying the acquired towers, it could require us to incur additional expenses before we can operate and generate revenue from such tower.

Our international operations are subject to economic, political and other risks, including risks associated with foreign currency exchange rates, that could materially and adversely affect our revenues or financial position.

Our current business operations in Canada, Costa Rica, El Salvador, Guatemala, Nicaragua and Panama and our expansion into any other international markets in the future, could result in adverse financial consequences and operational problems not typically experienced in the United States. Although the consolidated revenues generated by our international operations were less than 4% during the year ended December 31, 2011, we anticipate that our revenues from our international operations will grow in the future. Accordingly, our business is and will in the future be subject to risks associated with doing business internationally, including:

The majority of our international operations are denominated in United States dollars. However, for some of our international operations, we face risks associated with changes in foreign currency exchange rates, including those arising from our operations, investments and financing transactions related to our international business. Volatility in foreign currency exchange rates can also affect our ability to plan, forecast and budget for our international operations and expansion efforts.

Our convertible note hedge transactions may not cover all of the potential dilution or additional cash outlay, if we settled the notes in cash, to which we may be subject upon conversion of the notes.

Concurrently with the pricing of our 1.875% Convertible Senior Notes due 2013 (the “1.875% Notes”) and our 4.0% Convertible Senior Notes due 2014 (the “4.0% Notes”) we entered into convertible note hedge transactions and warrant transactions with affiliates of certain of the initial purchasers of the convertible note offerings. The initial strike price of the convertible note hedge transactions relating to our 1.875% Notes is $41.46 per share of our Class A common stock (the same as the initial conversion price of our 1.875% convertible notes) and the upper strike price of the warrants is $67.37 per share. The initial strike price of the convertible note hedge transactions relating to our 4.0% convertible Notes is $30.38 per share of our Class A common stock (the same as the initial conversion price of the 4.0% Notes) and the upper strike price of the warrant transactions is $44.64 per share. Pursuant to the terms of the warrant transaction, we are responsible for the dilution or costs, to the extent that we settle in cash or stock, arising from the conversion of the notes to the extent that the market price of our Class A common stock exceeds the strike price of the warrants. During 2011, we purchased an aggregate of $15.0 million in principal amount of the 1.875% Notes, and $535.0 million remained outstanding. If the market price of our Class A common stock significantly exceeded either of these strike prices on their respective conversion dates we would be subject to material dilution or, to the extent we elected to settle in cash, material additional costs.

Initially we entered into convertible note hedge and warrant transactions to cover the full amount of the shares that were issuable upon conversion of the 1.875% Notes and the 4.0% Notes. However, as a result of the bankruptcy of Lehman Brothers OTC Derivatives Inc. (“Lehman Derivatives”), we terminated the convertible note hedge transaction that we had entered into with Lehman Derivatives. The terminated convertible note hedge transaction had originally covered 55% of the 13,265,780 shares of our Class A common stock potentially issuable upon conversion of our 1.875% Notes. Consequently, we do not currently have a hedge with respect to that percentage of the shares issuable upon conversion of the 1.875% Notes To the extent that the market price of our Class A common stock exceeds $41.46 per share upon conversion of the notes, we will be subject to dilution or if we settle in cash, additional costs, upon conversion of that portion of the 1.875% Notes. If any of the other counterparties to our convertible hedge transactions were to default in their obligations, then our potential dilution or costs upon conversion of the respective notes would be materially increased.

New technologies and their use by carriers may have a material adverse effect on our growth rate and results of operations.

The emergence of new technologies could reduce the demand for space on our towers. For example, the increased use by wireless service providers of signal combining and related technologies and products that allow two or more wireless service providers to provide services on different transmission frequencies using the same communications antenna and other facilities normally used by only one wireless service provider could reduce the demand for our tower space. Additionally, the use of technologies that enhance spectral capacity, such as beam

forming or “smart antennae,” that can increase the range and capacity of an antenna could reduce the number of additional sites a wireless service provider needs to adequately serve a certain subscriber base and therefore reduce demand for our tower space. The development and growth of communications and other new technologies that do not require ground-based sites, such as the growth in delivery of video, voice and data services by satellites or other technologies, could also adversely affect the demand for our tower space. Any increase in the amount of wireless traffic moved by carriers away from macro antenna sites to small cell architecture, distributed antenna systems, Wi-Fi, or other alternate distribution methods could adversely affect the demand for our tower space. If any of these or other new technologies are widely adopted in the future it could have a material adverse effect on our growth and results of operations.

Increasing competition to acquire existing towers may negatively impact our ability to grow our tower portfolio long-term.long term.

We currently intend to grow our tower portfolio, 5% to10% annuallydomestically and internationally, through the consummation of the Mobilitie transaction, additional tower acquisitions and the construction of new builds.towers. Our ability to meet these growth targets significantly depends on our ability to acquire existing towers that meet our investment requirements. Traditionally, our acquisition strategy has focused on acquiring towers from smaller tower companies, independent tower developers and wireless service providers. However, as a result of consolidation in the tower industry there are fewer of these mid-sized tower transactions available and there is more competition to acquire existing towers. Increased competition for acquisitions may result in fewer acquisition opportunities for us, higher acquisition prices, reduced willingness of sellers to accept equity as consideration for their towers and increased difficulty in negotiating and consummating agreements to acquire such towers. Furthermore, to the extent that the tower acquisition opportunities are for significant tower portfolios, many of our competitors are significantly larger and have greater financial resources than us. If we are not able to successfully address these challenges, we may not be able to materially increase our tower portfolio in the long-term.

We have a substantial levelDue to these risks, it may take longer to complete our new tower builds than anticipated, the costs of indebtedness, a large portion of whichconstructing or acquiring these towers may be higher than we will need to refinance in the next two years. In the event we are not able to refinanceexpect or repay such indebtedness, we may not be able to access the cash flow from all of ouradd as many towers and we may need to take certain actions to service our debt obligations.

As of December 31, 2009,as we had $2.8 billion aggregate principal amount of debt outstanding, of which $0.9 billion is scheduledplanned in any given year. If we are not able to be repaid in 2011. The amount scheduled to be repaid in 2011 consists solely of the 2006 CMBS Certificates which have anincrease our tower portfolio as anticipated, repayment date in November 2011.

We do not currently expect to have sufficient cash flow from operations to repay the full principal amount of the 2006 CMBS Certificates. Consequently, we expect to refinance a significant portion of this debt. The global credit and capital markets are undergoing a period of substantial volatility and disruption, and the global economy is experiencing weakness and uncertainty. Although the credit markets have improved during 2009, we believe that this volatile credit environment has generally resulted in increased interest rates and/or interest rate spread as compared to periods immediately prior to 2007. Any renewed financial turmoil, worsening credit environment, economic weakness and uncertaintyit could negatively impact our ability and the cost of refinancing our 2006 CMBS Certificates.

If we are unable to refinance the 2006 CMBS Certificates by November 2011, the cash flow from the 3,746 tower sites pledged to secure such mortgage loan underlying the 2006 CMBS Certificates, representing 45% of our total tower portfolio as of December 31, 2009, will be trapped and unavailable to service our other outstanding debt. If these cash flows become trapped, they would be applied first to repay the interest, at the original interest rate, on the mortgage loan components underlying the 2006 CMBS Certificates, second to fund all reserve accounts and operating expenses associated with the pledged towers, third to pay the management fees, fourth to repay the principal of the 2006 CMBS Certificates in the order of their investment grade, and fifth to repay the additional interest discussed below. As a result of this cash trap, we would only have access to the cash flow generated by the remaining approximately 4,578 tower sites (approximately 55% of our total tower portfolio as of December 31, 2009) and the annual management fee (equal to 7.5% of the operating revenues of the borrowers under the CMBS Certificates for the immediately preceding calendar month) to service our other indebtedness and pay all other corporate expenses. Furthermore, if we are unable to repay the mortgage loan components relating to the 2006 CMBS Certificates by November 2011, then the interest rate on the mortgage loan underlying each subclass of the 2006 CMBS Certificates would increase by the greater of (i) 5% or (ii) the amount, if any, by which the sum of (x) the ten year U.S. treasury rate plus (y) the credit-based spread for the mortgage loan component underlying the referenced subclass of the 2006 CMBS Certificates (as set forth in the mortgage loan agreement) plus (z) 5%, exceeds the original interest rate for such component. Such additional interest will be payable once the principal of the 2006 CMBS Certificates is repaid. The sole remedy of the lenders if we do not refinance or repay the 2006 CMBS Certificates by November 2011 is the cash trap and the increased interest rates

discussed above, but it is not an event of default under the mortgage loan, the indenture governing any of our outstanding notes or the Senior Credit Agreement.

If we are unable to refinance the 2006 CMBS Certificates and therefore unable to access the cash flow from pledged towers, it may have an adverse impact on our ability to (i) repay our other indebtedness, or (ii) fund our planned capital expenditures, which would adversely affectachieve our financial health and/or anticipated growth.

Recent developments in the global economy could result in a slowdown in demand for wireless communications services or for tower space, which could adversely affect our future growth and revenues.

Due to the recent economic downturn and the resulting unemployment rates in the U.S. and internationally, consumer discretionary income has been, and may continue to be, adversely impacted. If wireless service subscribers significantly reduce their minutes of use, or fail to widely adopt and use wireless data applications, our wireless service provider customers would experience a decrease in demand for their services. As a result, they may scale back their business plans or otherwise reduce their spending, which could materially and adversely affect demand for our tower space and our wireless communications services business, which could have a material adverse effect on our business, results of operations and financial condition.

In addition, the recent volatility and disruption of the global credit and capital markets may adversely affect:

As a result of these factors, wireless service providers may delay or abandon implementation of new systems and technologies, including 3G, 4G or other wireless services or, worse, elect not to renew existing antenna leases in order to reduce operating expenses.

We have a substantial level of indebtedness which may have an adverse effect on our business or limit our ability to take advantage of business, strategic or financing opportunities.

As indicated below, we have and will continue to have a significant amount of indebtedness relative to our equity. The following table sets forth our total principal amount of debt and shareholders’ equity as of December 31, 2008 and 2009.

Our substantial level of indebtedness increases the possibility that we may be unable to generate cash sufficient to pay the principal, interest or other amounts when due. Subject to certain restrictions under our existing indebtedness, we and our subsidiaries may also incur significant additional indebtedness in the future, some of which may be secured debt. This may have the effect of increasing our total leverage.

As a consequence of our indebtedness, (1) demands on our cash resources may increase, (2) we are subject to restrictive covenants that further limit our financial and operating flexibility and (3) we may choose to institute self-imposed limits on our indebtedness based on certain considerations including market interest rates, our

relative leverage and our strategic plans. For example, as a result of our substantial level of indebtedness and the uncertainties arising in the credit markets and the U.S. economy:

These restrictions could have an adverse effect on our business by limiting our ability to take advantage of financing, new tower development, mergers and acquisitions or other opportunities.

In addition, fluctuations in market interest rates may increase interest expense relating to our floating rate indebtedness, which we expect to incur under our 2010 Credit Facility and may make it difficult to refinance our existing indebtedness, including our 2006 CMBS Certificates at a commercially reasonable rate or at all. There is no guarantee that the future refinancing of our indebtedness will have fixed interest rates or that interest rates on such indebtedness will be equal to or lower than the rates on our current indebtedness.

We may not secure as many site leasing tenants as planned or our lease rates for new tenant leases may decline.

If tenant demand for tower space or our lease rates on new leases decrease, we may not be able to successfully grow our site leasing business as expected. This may have a material adverse effect on our strategy, revenue growth and our ability to satisfy our financial and other contractual obligations. Our plan for the growth of our site leasing business largely depends on our management’s expectations and assumptions concerning future tenant demand and potential lease rates for our towers.goals.

Delays or changes in the deployment or adoption of new technologies or slowing consumer adoption rates may have a material adverse effect on our growth rate.

There can be no assurances that 3G, 4G or other new wireless technologies will be deployed or adopted as rapidly as projected or that these new technologies will be implemented in the manner anticipated. The deployment of 3G experienced delays from the original projected timelines of the wireless and broadcast industries, and deployment of 4G has been limited to date. Additionally, the demand by consumers and the adoption rate of consumers for these new technologies once deployed may be lower or slower than anticipated. These factors could have a material adverse effect on our growth rate since growth opportunities and demand for our tower space as a result of such new technologies may not be realized at the times or to the extent anticipated.

We may not secure as many site leasing tenants as planned or our lease rates for new tenant leases may decline.

If wireless service provider demand for tower space or our lease rates on new leases decrease, we may not be able to successfully grow our site leasing business as expected. This may have a material adverse effect on our strategy, revenue growth and our ability to satisfy our financial and other contractual obligations. Our plan for the growth of our site leasing business largely depends on our management’s expectations and assumptions concerning future tenant demand and potential lease rates for our towers.

Our acquisition initiatives may disrupt our operations or expose us to additional risk.

During 2012, we expect to grow our tower portfolio, domestically and internationally, through the consummation of the Mobilitie transaction, additional tower acquisitions and the construction of new towers. Our ability to grow through acquisitions will depend, in part, on the availability of suitable acquisitions at an acceptable price, our ability to compete effectively for towers and the availability of capital and personnel to complete such acquisitions and effectively integrate acquired towers into our business. These risks could be heightened if we complete a large acquisition, such as our pending Mobilitie acquisition, or several smaller acquisitions within a relatively short period of time. Furthermore, large acquisitions may raise additional risks as we are required to place enhanced reliance on the financial and operational representations and warranties of sellers. Our acquisition strategy subjects us to a number of risks and uncertainties, including an adverse impact on our overall profitability if the acquired towers do not achieve the financial results projected in our valuation models, unanticipated costs associated with the acquisitions, undisclosed and assumed liabilities that we may be unable to recover, an adverse impact on our existing customer relationships and the diversion of managerial attention due to an acquisition. If we are not able to successfully execute on our acquisition strategy, our future tower portfolio growth, and therefore our future financial results, could be adversely impacted.

Our international expansion initiatives are subject to additional risks such as complex laws, regulations and business practices that may require additional resources and personnel, as well as those risks described above in “—Our international operations are subject to economic, political and other risks that could materially and adversely affect our revenues or financial position, including risks associated with foreign currency exchange rates.” Furthermore, the success of our international operations is subject to a number of uncertainties, including our ability to compete internationally with tower companies or wireless service providers that own and operate their own tower networks, and that, in some cases, have been in the international market for a longer period of time. Although we generally focus our international efforts in countries with relatively stable political and macroeconomic environments, growing, competitive wireless communications industries and multiple wireless carriers that are likely to outsource their communications site infrastructure needs to us, we are subject to several factors outside of our control, and no assurance can be given that our expansion initiatives will succeed and not materially and adversely affect our business, results of operations and financial condition.

Increasing competition in the tower industry may create pricing pressures that may materially and adversely affect us.

Our industry is highly competitive, and our customers sometimes have numerous alternatives for leasing antenna space. Some of our competitors, such as (1) nationalU.S. and international wireless carriers that allow collocation on their towers and (2) large independent tower companies, are substantially larger and have greater financial resources than us. This could provide them with advantages with respect to establishing favorable leasing terms with wireless service providers or in their ability to acquire available towers.

In the site leasing business, we compete with:

We believe that tower location and capacity, quality of service, density within a geographic market and, to a lesser extent, price historically have been and will continue to be the most significant competitive factors affecting the site leasing business. However, competitive pricing pressures for tenants on towers from these competitors could materially and adversely affect our lease rates. In addition, we may not be able to renew existing customer leases or enter into new customer leases, resulting in a material adverse impact on our results of operations and growth rate. Increasing competition could also make the acquisition of high quality tower assets more costly.costly, or limit the acquisition opportunities altogether. Any of these factors could materially and adversely affect our business, results of operations or financial condition.

The site development segment of our industry is also extremely competitive. There are numerous large and small companies that offer one or more of the services offered by our site development business. As a result of this competition, margins in this segment continue to be under pressure. Many of our competitors have lower overhead expenses and therefore may be able to provide services at prices that we consider unprofitable. If margins in this segment were to further decrease, our consolidated revenues and our site development segment operating profit could be adversely affected.

If we are unable to protect our rights to the land under our towers, it could adversely affect our business and operating results.

Our real property interests relating to our towers consist primarily of leasehold and sub-leasehold interests, fee interests, easements, licenses and rights-of-way. A loss of these interests at a particular tower site may interfere with our ability to operate a tower and generate revenues. For various reasons, we may not always have the ability to access, analyze and verify all information regarding title and other issues prior to completing an acquisition of communications sites, which can affect our rights to access and operate a site. From time to time we also experience disputes with landowners regarding the terms of ground agreements for land under a tower, which can affect our ability to access and operate a tower site. Further, for various reasons, landowners may not want to renew their ground agreements with us, they may lose their rights to the land, or they may transfer their land interests to third parties, including ground lease aggregators, which could affect our ability to renew ground agreements on commercially viable terms. Our inability to protect our rights to the land under our towers may have a future material adverse effect on our business, results of operations or financial condition.

Our foreign operations are subject to economic, political and other risks that could materially and adversely affect our revenues or financial position, including risks associated with foreign currency exchange rates.

Our current business operations in Canada and our expansion into any other international markets in the future, could result in adverse financial consequences and operational problems not experienced in the United States. Although the consolidated revenues generated by our international operations were immaterial during the year ended December 31, 2009, we anticipate that our revenues from our international operations may grow in the future. Accordingly, our business is subject to risks associated with doing business internationally, including:

In addition, we face risks associated with changes in foreign currency exchange rates, including those arising from our operations, investments and financing transactions related to our international business. Volatility in foreign currency exchange rates can also affect our ability to plan, forecast and budget for our international operations and expansion efforts.

The market price of our Class A common stock could be affected by significant volatility, which could adversely impact our ability to use equity to fund our growth plan.

The market price of our Class A common stock has historically experienced significant fluctuations. Since the fall of 2008, the U.S. stock market has been undergoing a period of very high volatility where changes in the market prices of equity securities have often been abrupt and profound over short periods of time. The market price of our Class A common stock is likely to continue to be volatile and subject to significant price and volume fluctuations in response to market and other factors, including the other factors discussed elsewhere in “Risk Factors” and in “Forward-Looking Statements.” Volatility or depressed market prices of our Class A common stock could make it difficult for shareholders to resell their shares of Class A common stock, when they want or at attractive prices. Consequently, volatility of the market price of our Class A common stock may make it less likely that sellers will accept our equity as consideration in connection with our tower acquisitions and may make it more difficult for us to use our equity to fund our future growth plans. If we were unable to use equity to fund the growth of our tower portfolio, we may be required to either use debt to increase our tower portfolio or reduce our anticipated growth.

Counterparties to our convertible note hedge transactions may be unable to fulfill their obligations and such failure could subject us to significant costs to replace any such portion of our convertible note hedge transactions or subject us to potential dilution or additional cost, if settled in cash, upon conversion of our convertible notes.

Concurrently with the pricing of our 0.375% Convertible Senior Notes due 2010 (the “0.375% Notes”), our 1.875% Convertible Senior Notes due 2013 (the “1.875% Notes”), and our 4.0% Convertible Senior Notes due 2014 (the “4.0% Notes”), we entered into convertible note hedge transactions with affiliates of certain of the initial purchasers of the convertible note offerings. The initial strike price of the convertible note hedge transactions relating to our 0.375% Notes is $33.56 per share of our Class A common stock (the same as the initial conversion price of the 0.375% Notes) and cover 10,429,720 shares of our Class A common stock. As of December 31, 2009, the convertible note hedge transactions cover 2,559,185 shares of our Class A common stock, as a result of repurchases and termination of $264.1million in principal of 0.375% Notes and convertible note hedges. The initial strike price of the convertible note hedge transactions relating to our 1.875% Notes is $41.46 per share of our Class A common stock (the same as the initial conversion price of our 1.875% convertible notes) and cover 13,265,780 shares of our Class A common stock. The initial strike price of the convertible note hedge transactions relating to our 4.0% convertible Notes is $30.38 per share of our Class A common stock (the same as the initial conversion price of the 4.0% Notes) and cover 16,458,196 shares of our Class A common stock.

Since the fall of 2008, global economic conditions and the financial markets have been and continue to be volatile. Certain financial institutions have filed for bankruptcy, have sold some or all of their assets, or may be looking to enter into a merger or other transaction with another financial institution. As a result of these conditions, some of the counterparties to our convertible note hedge transactions may be unable to perform their obligations under such instruments. One of the convertible note hedge transactions entered into in connection with our 1.875% Notes was with Lehman Brothers OTC Derivatives Inc. (“Lehman Derivatives”) which covers 55% of the 13,265,780 shares of our Class A common stock potentially issuable upon conversion of our 1.875% convertible notes. In October 2008, Lehman Derivatives filed a voluntary petition for protection under Chapter 11 of the United States Bankruptcy Code which constituted an “event of default” under the convertible note hedge transaction with Lehman Derivatives. As a result, on November 7, 2008 we terminated the convertible note hedge transaction with Lehman Derivatives. Based on information available to us, we have no indication, as of the date of filing this Form 10-K, that any party other than Lehman Derivatives would be unable to fulfill their obligations to us under the convertible note hedge transactions.

If we were to elect to replace the convertible note hedge transaction with Lehman Derivatives or any other counterparty, we would incur significant costs to replace such hedge transactions. Additionally, if we do not elect to replace our convertible note hedge transactions that were previously with Lehman Derivatives or any other counterparty fails to perform its obligations under our outstanding convertible note hedge transactions, we would be subject to potential dilution or additional cost, if settled in cash, upon conversion of the applicable 0.375% Notes, 1.875% Notes and 4.0% Notes.

We may not be able to build as many towers as we anticipate.

We currently intend to build at least 120 to 140 new towers during 2010. However, our ability to build these new towers is dependent upon the availability of sufficient capital to fund construction, our ability to locate, and acquire at commercially reasonable prices, attractive locations for such towers and our ability to obtain the necessary zoning and permits.

Due to these risks, it may take longer to complete our new tower builds than anticipated, the costs of constructing or acquiring these towers may be higher than we expect or we may not be able to add as many towers as we had planned in 2010. If we are not able to increase our tower portfolio as anticipated, it could negatively impact our ability to achieve our financial goals.

Our debt instruments contain restrictive covenants that could adversely affect our business by limiting our flexibility.

Our 2010 Credit FacilityAgreement contains certain restrictive covenants. Among other things, these covenants limit our ability to:

These covenants could place us at a disadvantage compared to some of our competitors which may have fewer restrictive covenants and may not be required to operate under these restrictions. Further, these covenants could have an adverse effect on our business by limiting our ability to take advantage of financing, new tower development, merger and acquisitions or other opportunities. If we fail to comply with these covenants, it could result in an event of default under the 2010 Credit Facility.Agreement. In addition, if we default in the payment of our other indebtedness, including under our 2006 CMBS Certificates2010 Tower Securities and our notes, then such default could cause a cross-default under our 2010 Credit Facility.Agreement.

The mortgage loan relating to our 2006 CMBS Certificates2010 Tower Securities also contains financial covenants that require that the mortgage loan borrowers maintain, on a consolidated basis, a minimum debt service coverage ratio. To the extent that the debt service coverage ratio, as of the end of any calendar quarter, (1) is less than 1.30 times,falls to 1.30x or lower, then all cash flow generated byin excess of amounts required to make debt service payments, to fund required reserves, to pay management fees and budgeted operating expenses and to make other payments required under the pledged towers mustloan documents, referred to as “excess cash flow,” will be deposited into a reserve account and (2) is less than 1.15 times,instead of being released to the Borrowers. The funds in the reserve account will not be released to the Borrowers unless the debt service coverage ratio exceeds 1.30x for two consecutive calendar quarters. If the debt service coverage ratio falls below 1.15x as of the end of any calendar quarter, then an “amortization period” will commence and all funds on deposit in the reserve account will be applied to prepay the mortgage loan until such time asthat the debt service coverage ratio exceeds 1.15 times1.15x for a calendar quarter. As lease payments from 3,7463,670 tower sites of our total tower portfolio are pledged as collateral under the mortgage loan, if this cash flow was not available to us it could adversely impact our ability to pay our indebtedness, other than the mortgage loan, and to operate our business.

New technologies and their use by carriers may have a material adverse effect on our growth rate and results of operations.

The emergence of new technologies could reduce the demand for space on our towers. For example, the increased use by wireless service providers of signal combining and related technologies and products that allow two or more wireless service providers to provide services on different transmission frequencies using the same communications antenna and other facilities normally used by only one wireless service provider could reduce the demand for our tower space. Additionally, the use of technologies that enhance spectral capacity, such as beam forming or “smart antennae,” that can increase the range and capacity of an antenna could reduce the number of additional sites a wireless service provider needs to adequately serve a certain subscriber base and therefore reduce demand for our tower space. The development and growth of communications and other new technologies that do not require ground-based sites, such as the growth in delivery of video, voice and data services by satellites or other technologies, could also adversely affect the demand for our tower space.

Our dependence on our subsidiaries for cash flow may negatively affect our business.

We are a holding company with no business operations of our own. Our only significant asset is, and is expected to be, the outstanding capital stock and membership interests of our subsidiaries. We conduct, and expect to continue conducting, all of our business operations through our subsidiaries. Accordingly, our ability to pay our obligations is dependent upon dividends and other distributions from our subsidiaries to us. Most of our indebtedness is owed directly by our subsidiaries, including the mortgage loan underlying the 2006 CMBS Notes,2010 Tower Securities, the 2016 Notes, the 2019 Notes, the Term Loan and any amounts that we may borrow under the 2010Revolving Credit Facility. Consequently, the first use of any cash flow from operations generated by such subsidiaries will be payments of interest and principal, if any, under their respective indebtedness. Other than the

cash required to repay amounts due under our outstanding convertible notes, we currently expect that substantially all the earnings and cash flow of our subsidiaries will be retained and used by them in their operations, including servicing their respective debt obligations. The ability of our operating subsidiaries to pay dividends or transfer assets to us is restricted by applicable state law and contractual restrictions, including the terms of their outstanding debt instruments.

Our quarterly operating results for our site development services fluctuate and therefore we may not be able to adjust our cost structure on a timely basis with regard to such fluctuations.

The demand for our site development services fluctuates from quarter to quarter and should not be considered indicative of long-term results. Numerous factors cause these fluctuations, including:

Although the demand for our site development services fluctuates, we incur significant fixed costs, such as maintaining a staff and office space in anticipation of future contracts. In addition, the timing of revenues is difficult to forecast because our sales cycle may be relatively long. Therefore, we may not be able to adjust our cost structure on a timely basis to respond to the fluctuations in demand for our site development services.

We are not profitable and expect to continue to incur losses.

We are not profitable. The following chart shows the net losses we incurred for the periods indicated:

Our losses are principally due to depreciation, amortization and accretion expenses, interest expense (including non-cash interest expense and amortization of deferred financing fees), and losses from the extinguishment of debt as well as impairment charges on our towers and auction rate securities in the periods presented above. We expect to continue to incur significant losses, which may affect our ability to service our indebtedness.

The loss of the services of certain of our key personnel or a significant number of our employees may negatively affect our business.

Our success depends to a significant extent upon performance and active participation of our key personnel. We cannot guarantee that we will be successful in retaining the services of these key personnel. We have employment agreements with Jeffrey A. Stoops, our President and Chief Executive Officer, Kurt L. Bagwell, our Senior Vice President and Chief Operating Officer,– International, Thomas P. Hunt, our Senior Vice President, Chief Administrative Officer and General Counsel, and Brendan T. Cavanagh, our Senior Vice President and Chief Financial Officer. We do not have employment agreements with any of our other key personnel. If we were to lose any key personnel, we may not be able to find an appropriate replacement on a timely basis and our results of operations could be negatively affected. Further, the loss of a significant number of employees or our inability to hire a sufficient number of qualified employees could have a material adverse effect on our business.

Our costs could increase and our revenues could decrease due to perceived health risks from radio frequency (“RF”) energy.

The government imposes requirements and other guidelines relating to exposure to RF energy. Exposure to high levels of RF energy can cause negative health effects. The potential connection between exposure to low levels of RF energy and certain negative health effects, including some forms of cancer, has been the subject of substantial study by the scientific community in recent years. According to the Federal Communications Commission (the “FCC”), the results of these studies to date have been inconclusive. However, public perception of possible health risks associated with cellular and other wireless communications media could slow the growth of wireless companies, which could in turn slow our growth. In particular, negative public perception of, and regulations regarding, health risks could cause a decrease in the demand for wireless communications services. Moreover, if a connection between exposure to low levels of RF energy and possible negative health effects, including cancer, were demonstrated, we could be subject to numerous claims. If we were subject to claims relating to exposure to RF energy, even if such claims were not ultimately found to have merit, our financial condition could be materially and adversely affected.

Our business is subject to government regulations and changes in current or future regulations could harm our business.

We are subject to federal, state and local regulation of our business.business, both in the U.S. and internationally. In particular,the U.S., both the Federal Aviation Administration (“FAA”) and the FCC regulate the construction, modification and maintenance of antenna towers and structures that support wireless communications and radio and television antennas. In addition, the FCC separately licenses and regulates wireless communications equipment and television and radio stations operating from such towers and structures. FAA and FCC regulations govern construction, lighting, painting and marking of

towers and structures and may, depending on the characteristics of the tower or structure, require registration of the tower or structure. Certain proposals to construct new towers or structures or to modify existing towers or structures are reviewed by the FAA to ensure that the tower or structure will not present a hazard to air navigation.

Antenna tower owners and antenna structure owners may have an obligation to mark or paint towers or structures or install lighting to conform to FAA and FCC regulations and to maintain such marking, painting and lighting. Antenna tower owners and antenna structure owners may also bear the responsibility of notifying the FAA of any lighting outages. Certain proposals to operate wireless communications and radio or television stations from antenna towers and structures are also reviewed by the FCC to ensure compliance with environmental impact requirements. Failure to comply with existing or future applicable requirements may lead to civil penalties or other liabilities and may subject us to significant indemnification liability to our customers against any such failure to comply. In addition, new regulations may impose additional costly burdens on us, which may affect our revenues and cause delays in our growth.

Local regulations, including municipal or local ordinances, zoning restrictions and restrictive covenants imposed by community developers, vary greatly, but typically require antenna tower and structure owners to obtain approval from local officials or community standards organizations prior to tower or structure construction or modification. Local regulations can delay, prevent, or increase the cost of new construction, co-locations, or site upgrades, thereby limiting our ability to respond to customer demand. In addition, new regulations may be adopted that increase delays or result in additional costs to us. Furthermore, with respect to our international new builds, our tower construction may be delayed or halted as a result of local zoning restrictions, inconsistencies between laws or other barriers to construction in international markets. These factors could have a material adverse effect on our future growth and operations.

Our towers are subject to damage from natural disasters.

Our towers are subject to risks associated with natural disasters such as tornadoes, hurricanes and earthquakes. We maintain insurance to cover the estimated cost of replacing damaged towers, but these insurance policies are subject to loss limits and deductibles. We also maintain third party liability insurance, subject to loss limits and deductibles, to protect us in the event of an accident involving a tower. A tower accident for which we are uninsured or underinsured, or damage to a significant number of our towers, could require us to incur significant expenditures and may have a material adverse effect on our operations or financial condition.

To the extent that we are not able to meet our contractual obligations to our customers, due to a natural disaster or other catastrophic circumstances, our customers may not be obligated or willing to pay their lease expenses; however, we would be required to continue paying our fixed expenses related to the affected tower, including ground lease expenses. If we are unable to meet our contractual obligations to our customers for a material portion of our towers, our operations could be materially and adversely affected.

Our quarterly operating results for our site development services fluctuate and therefore we may not be able to adjust our cost structure on a timely basis with regard to such fluctuations.

The demand for our site development services fluctuates from quarter to quarter and should not be considered indicative of long-term results. Numerous factors cause these fluctuations, including:

Although the demand for our site development services fluctuates, we incur significant fixed costs, such as maintaining a staff and office space, in anticipation of future contracts. In addition, the timing of revenues is difficult to forecast because our sales cycle may be relatively long. Therefore, we may not be able to adjust our cost structure on a timely basis to respond to the fluctuations in demand for our site development services.

We could have liability under environmental laws that could have a material adverse effect on our business, financial condition and results of operations.

Our operations, like those of other companies engaged in similar businesses, are subject to the requirements of various federal, state, local and foreign environmental and occupational safety and health laws and regulations, including those relating to the management, use, storage, disposal, emission and remediation of, and exposure to, hazardous and non-hazardous substances, materials, and wastes. As owner, lessee or operator of numerous tower sites, we may be liable for substantial costs of remediating soil and groundwater contaminated by hazardous materials, without regard to whether we, as the owner, lessee or operator, knew of or were responsible for the contamination. We may be subject to potentially significant fines or penalties if we fail to comply with any of these requirements. The current cost of complying with these laws is not material to our financial condition or results of operations. However, the requirements of these laws and regulations are complex, change frequently, and could become more stringent in the future. It is possible that these requirements will change or that liabilities will arise in the future in a manner that could have a material adverse effect on our business, financial condition and results of operations.

We have adoptedOur articles of incorporation, our bylaws and Florida law provide for anti-takeover provisions that could make it more difficult for a third party to acquire us.

Provisions of our articles of incorporation, our bylaws and Florida law could make it more difficult for a third party to acquire us, even if doing so would be beneficial to our shareholders. We adopted a shareholder rights agreement, which could make it considerably more difficult or costly for a person or group to acquire control of us in a transaction that our board of directors opposes. These provisions, alone or in combination with each other,

may discourage transactions involving actual or potential changes of control, including transactions that otherwise could involve payment of a premium over prevailing market prices to holders of our Class A common stock, or could limit the ability of our shareholders to approve transactions that they may deem to be in their best interests.

Our issuance of equity securities and other associated transactions may trigger a future ownership change which may negatively impact our ability to utilize net operating loss deferred tax assets in the future.

The issuance of equity securities and other associated transactions may increase the chance that we will have a future ownership change under Section 382 of the Internal Revenue Code of 1986. We may also have a future ownership change, outside of our control, caused by future equity transactions by our current shareholders. Depending on our market value at the time of such future ownership change, an ownership change under Section 382 could negatively impact our ability to utilize our net operating loss deferred tax assets in the event we generate future taxable income. Currently, we have recorded a full valuation allowance against our net operating loss deferred tax asset because we have concluded that our loss history indicates that it is not “more likely than not” that such deferred tax assets will be realized.

We could suffer adverse tax and other financial consequences if taxing authorities do not agree with our tax positions, or we are unable to utilize our net operating losses.

We are periodically subject to a number of tax examinations by taxing authorities in the states and countries where we do business. We also have significant deferred tax assets related to our net operating losses (“NOLs”) in U.S. federal and state taxing jurisdictions. Generally, for U.S. federal and state tax purposes, NOLs can be carried forward and used for up to twenty years, and all of our tax years will remain subject to examination until three years after our NOLs are used or expire. We expect that we will continue to be subject to tax examinations in the future. In addition, U.S. federal, state and local, as well as international, tax laws and regulations are extremely complex and subject to varying interpretations. We recognize tax benefits of uncertain tax positions when we believe the positions are more likely than not of being sustained upon a challenge by the relevant tax authority. We believe our judgments in this area are reasonable and correct, but there is no guarantee that we will be successful if challenged by a tax authority. If there are tax benefits, including from our use of NOLs or other tax attributes, that are challenged successfully by a taxing authority, we may be required to pay additional taxes or we may seek to enter into settlements with the taxing authorities, which could require significant payments or otherwise have a material adverse effect on our business, results of operations and financial condition.

In addition, we may be limited in our ability to utilize our NOLs to offset future taxable income and thereby reduce our otherwise payable income taxes. We have substantial federal and state NOLs, including significant portions obtained through acquisitions and dispositions, as well as those generated through our historic business operations. In addition, we have disposed of some entities and restructured other entities in conjunction with financing transactions and other business activities.

To the extent we believe that a position with respect to an NOL is not more likely than not to be sustained, we do not record the related deferred tax asset. In addition, for NOLs that meet the recognition threshold, we assess the recoverability of the NOL and establish a valuation allowance against the deferred tax asset related to the NOL if recoverability is questionable. Given the uncertainty surrounding the recoverability of certain of our NOLs, we have established a valuation allowance to offset the related deferred tax asset so as to reflect what we believe to be the recoverable portion of our NOLs.

Our ability to utilize our NOLs is also dependent, in part, upon us having sufficient future earnings to utilize our NOLs before they expire. If market conditions change materially and we determine that we will be unable to generate sufficient taxable income in the future to utilize our NOLs, we could be required to record an additional valuation allowance. We review our uncertain tax position and the valuation allowance for our NOLs periodically and make adjustments from time to time, which can result in an increase or decrease to the net deferred tax asset related to our NOLs. Our NOLs are also subject to review and potential disallowance upon audit by the taxing authorities of the jurisdictions where the NOLs were incurred, and future changes in tax laws or interpretations of such tax laws could limit materially our ability to utilize our NOLs. If we are unable to use our NOLs or use of our NOLs is limited, we may have to make significant payments or otherwise record charges or reduce our

deferred tax assets, which could have a material adverse effect on our business, results of operations and financial condition.

Our issuance of equity securities and other associated transactions may trigger a future ownership change which may negatively impact our ability to utilize net operating loss deferred tax assets in the future.

The issuance of equity securities and other associated transactions may increase the chance that we will have a future ownership change under Section 382 of the Internal Revenue Code of 1986. We may also have a future ownership change, outside of our control, caused by future equity transactions by our current shareholders. Depending on our market value at the time of such future ownership change, an ownership change under Section 382 could negatively impact our ability to utilize our net operating loss deferred tax assets in the event we generate future taxable income. Currently, we have recorded a full valuation allowance against our net operating loss deferred tax asset because we have concluded that our loss history indicates that it is not “more likely than not” that such deferred tax assets will be realized.

Future sales of our Class A common stock in the public market or the issuance of other equity may cause dilution or adversely affect the market price of our Class A common stock and our ability to raise funds in new equity or equity-related offerings.

Sales of a substantial number of shares of our Class A common stock or other equity-related securities in the public market, including sales by any selling shareholder or conversion of the Notes, could depress the market price of our Class A common stock and impair our ability to raise capital through the sale of additional equity securities. We cannot predict

Our costs could increase and our revenues could decrease due to perceived health risks from RF energy.

The U.S. government imposes requirements and other guidelines relating to exposure to RF energy. Exposure to high levels of RF energy can cause negative health effects. The potential connection between exposure to low levels of RF energy and certain negative health effects, including some forms of cancer, has been the effect that future salessubject of

substantial study by the scientific community in recent years. According to the FCC, the results of these studies to date have been inconclusive. However, public perception of possible health risks associated with cellular and other wireless communications media could slow the growth of wireless companies, which could in turn slow our Class A common stock or other equity-related securities wouldgrowth. In particular, negative public perception of, and regulations regarding, health risks could cause a decrease in the demand for wireless communications services. Moreover, if a connection between exposure to low levels of RF energy and possible negative health effects, including cancer, were demonstrated, we could be subject to numerous claims. If we were subject to claims relating to exposure to RF energy, even if such claims were not ultimately found to have on the market price ofmerit, our Class A common stock.financial condition could be materially and adversely affected.

None.

ITEM 2. PROPERTIES

We are headquartered in Boca Raton, Florida, where we currently lease approximately 73,000 square feet of office space. This lease expires February 28, 2022. We have entered into long-term leases for regional and certain site development office locations where we expect our activities to be longer-term. We open and close project offices from time to time in connection with our site development business. We believe our existing facilities are adequate for our current and planned levels of operations and that additional office space suited for our needs is reasonably available in the markets within which we operate.

Our interests in towers are comprised of a variety of fee interests, leasehold interests created by long-term lease agreements, perpetual easements, easements and licenses or rights-of-way granted by government entities. OfFor the 8,324quarter ended December 31, 2011, approximately 70.0% of our tower sites in our portfolio, approximately 27.6% arewere located on parcels of land that we own, land subject to perpetual easements, or parcels of land that have a leasehold interest that extends beyond 5020 years. The average remaining life under our ground leases, including renewal options under our control, has been extended to 33 years. In rural areas, a wireless communications site typically consists of up to a 10,000 square foot tract, which supports towers, equipment shelters and related equipment. Less than 2,500 square feet is required for a monopole or self-supporting tower structure of the kind typically used in metropolitan areas for wireless communications tower sites. Land leases generally have an initial term of five years with five or more additional automatic renewal periods of five years, for a total of thirty years or more.

ITEM 3. LEGAL PROCEEDINGS

We are involved in various legal proceedings relating to claims arising in the ordinary course of business. We do not believe that the ultimate resolution of these matters will have a material adverse effect on our business, financial condition, results of operations or liquidity.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market for our Class A common stockCommon Stock

Our Class A common stock commenced trading under the symbol “SBAC” on The NASDAQ National Market System on June 16, 1999. We now trade on the NASDAQ Global Select Market, a segment of the NASDAQ Global Market, formally known as the NASDAQ National Market System.

The following table presents the high and low sales price for our Class A common stock for the periods indicated:

As of February 24, 2010,16, 2012, there were 147118 record holders of our Class A common stock.

Dividends

We have never paid a dividend on any class of common stock and anticipate that we will retain future earnings, if any, to fund the development and growth of our business. Consequently, we do not anticipate paying cash dividends on our Class A common stock in the foreseeable future.

Equity Compensation Plan Information

The following table gives information about our Class A common stock that may be issued upon the exercise of options, warrants, and rights under all existing equity compensation plans as of December 31, 2009:

(1)	Included in the number of sharessecurities in column (a) is approximately 86,000 restricted stock units, which have no exercise price. The weighted average exercise price of Class A commonoutstanding options, warrants and rights (excluding restricted stock that may be issuedunits) is $25.43.

(2)	Included in the number of securities in column (a) is approximately 139,000 restricted stock units, which have no exercise price. The weighted average exercise price of outstanding options, warrants and rights (excluding restricted stock units) is $41.87

(3)

This plan has been terminated and we are no longer eligible to issue shares pursuant to awards under the 2001 Equity Participation Plan shall be 15% of the “adjusted common stock outstanding” as defined in the 2001 Equity Participation Plan, subject to certain limitations for specific types of awards.

Issuer repurchases of equity securitiesplan.

The following table presents information related to our repurchases of Class A common stock during the fourth quarter of 2009:

ITEM 6. SELECTED FINANCIAL DATA

SELECTED FINANCIAL DATA

Effective January 1, 2009, we retrospectively adopted new convertible debt accounting rules which require the issuer of certain convertible debt instruments that may be settled in cash (including partial cash settlement) on conversion to separately account for the liability (debt) and equity (conversion option) components of the instrument in a manner that reflects the issuer’s non-convertible debt borrowing rate. Our 0.375% Notes and 1.875% Notes are subject to the retrospective restatement requirements required by the new convertible debt accounting. Our consolidated statements of operations and our consolidated statements of cash flows for the years ended December 31, 2008 and 2007 and consolidated balance sheets as of December 31, 2008 and 2007 have been retrospectively adjusted to reflect the impact of adopting the new convertible debt accounting. No periods prior to 2007 were affected by the adoption of the new convertible debt accounting. See Note 2 and Note 13 to the consolidated financial statements for a summary of the effects on our consolidated statements of operations for the years ended December 31, 2008 and 2007 and consolidated balance sheet as of December 31, 2008. The accompanying selected financial data and Management’s Discussion and Analysis reflects the changes due to the implementation.

The following table sets forth selected historical financial data as of and for each of the five years ended December 31, 2009.2011. The financial data for the fiscal years ended 2005, 2006, 2007, 2008, 2009, 2010, and 20092011 have been derived from our audited consolidated financial statements. You should read the information set forth below in conjunction with our “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and the related notes to those consolidated financial statements included in this Form 10-K.

		For the year ended December 31,
		2005				2006				2007				2008				2009
		(audited)				(audited)				(audited)				(audited)				(audited)
										(as adjusted)				(as adjusted)
		(in thousands, except for per share data)
Operating data:
Revenues:
Site leasing		$	161,277			$	256,170			$	321,818			$	395,541			$	477,007
Site development			98,714				94,932				86,383				79,413				78,506
Total revenues			259,991				351,102				408,201				474,954				555,513
Operating expenses:
Cost of revenues (exclusive of depreciation, accretion and amortization shown below):
Cost of site leasing			47,259				70,663				88,006				96,175				111,842
Cost of site development			92,693				85,923				75,347				71,990				68,701
Selling, general and administrative			28,178				42,277				45,564				48,721				52,785
Acquisition related expenses			—				—				5				120				4,810
Restructuring and other charges (credits)			50				(357	)			—				—				—
Asset impairment			398				—				—				921				3,884
Depreciation, accretion and amortization			87,218				133,088				169,232				211,445				258,537
Total operating expenses			255,796				331,594				378,154				429,372				500,559
Operating income			4,195				19,508				30,047				45,582				54,954
Other income (expense):
Interest income			2,096				3,814				10,182				6,883				1,123
Interest expense			(40,511	)			(81,283	)			(93,063	)			(105,328	)			(130,853	)
Non-cash interest expense			(26,234	)			(6,845	)			(13,402	)			(33,309	)			(49,897	)
Amortization of deferred financing fees			(2,850	)			(11,584	)			(8,162	)			(10,746	)			(10,456	)
(Loss) gain from extinguishment of debt, net			(29,271	)			(57,233	)			(431	)			44,269				(5,661	)
Other income (expense)			31				692				(15,777	)			(13,478	)			163
Total other expense			(96,739	)			(152,439	)			(120,653	)			(111,709	)			(195,581	)
Loss from continuing operations before income taxes			(92,544	)			(132,931	)			(90,606	)			(66,127	)			(140,627	)
Provision for income taxes			(2,104	)			(517	)			(868	)			(1,037	)			(492	)
Loss from continuing operations			(94,648	)			(133,448	)			(91,474	)			(67,164	)			(141,119	)
Loss from discontinued operations, net of income taxes			(61	)			—				—				—				—
Net loss			(94,709	)			(133,448	)			(91,474	)			(67,164	)			(141,119	)
Less: Net loss attributable to the noncontrolling interest			—				—				—				—				248
Net loss attributable to SBA Communications Corporation		$	(94,709	)		$	(133,448	)		$	(91,474	)		$	(67,164	)		$	(140,871	)
Basic and diluted loss per common share amounts:
Loss from continuing operations		$	(1.28	)		$	(1.36	)		$	(0.87	)		$	(0.61	)		$	(1.20	)
Loss from discontinued operations			—				—				—				—				—
Net loss per common share		$	(1.28	)		$	(1.36	)		$	(0.87	)		$	(0.61	)		$	(1.20	)
Basic and diluted weighted average shares outstanding			73,823				98,193				104,743				109,882				117,165

		As of December 31,
		2005				2006				2007				2008				2009
		(audited)				(audited)				(audited)				(audited)				(audited)
										(as adjusted)				(as adjusted)
		(in thousands)
Balance Sheet Data:
Cash and cash equivalents		$	45,934			$	46,148			$	70,272			$	78,856			$	161,317
Short-term investments			19,777				—				55,142				162				5,352
Restricted cash(1)			19,512				34,403				37,601				38,599				30,285
Property and equipment, net			728,333				1,105,942				1,191,969				1,502,672				1,496,938
Intangibles, net			31,491				724,872				868,999				1,425,132				1,435,591
Total assets			952,536				2,046,292				2,382,863				3,207,829				3,313,646
Total debt			784,392				1,555,000				1,844,573				2,392,230				2,489,050
Total shareholders’ equity(2)			81,431				385,921				396,357				650,510				599,949
		For the year ended December 31,
		2005				2006				2007				2008				2009
		(audited)				(audited)				(audited)				(audited)				(audited)
										(as adjusted)				(as adjusted)
		(in thousands)
Other Data:
Cash provided by (used in):
Operating activities		$	49,767			$	73,730			$	122,934			$	173,696			$	219,558
Investing activities			(99,283	)			(738,353	)			(301,884	)			(580,549	)			(226,075	)
Financing activities			25,823				664,837				203,074				415,437				88,978