Gaztransport & Technigaz
Annual Report 2016

Plain-text annual report

Morningstar® Document Research℠ FORM 10-KGTT Communications, Inc. - GTTFiled: March 08, 2017 (period: December 31, 2016)Annual report with a comprehensive overview of the companyThe information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The userassumes all risks for any damages or losses arising from any use of this information, except to the extent such damages or losses cannot belimited or excluded by applicable law. Past financial performance is no guarantee of future results.UNITED STATES SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal year ended December 31, 2016 Commission File Number 000-51211 GTT Communications, Inc.(Exact Name of Registrant as Specified in Its Charter) Delaware 20-2096338(State or Other Jurisdiction of (I.R.S. Employer Identification No.)Incorporation or Organization) 7900 Tysons One PlaceSuite 1450McLean, Virginia 22102(703) 442-5500(Address including zip code, and telephone number, including areacode, of principal executive offices)Securities registered pursuant to Section 12(b) of the Act:Title of each className of each exchange on which registeredCommon stock, par value $.0001 per shareNYSE Securities registered pursuant to Section 12(g) of the Act:NoneIndicate by check mark whether the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.Yes ¨ No þIndicate by check mark whether the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.Yes ¨ No þIndicate 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 1934during 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 filingrequirements for the past 90 days. Yes þ No ¨Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data Filerequired to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorterperiod that the registrant was required to submit and post such files). Yes þ 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 thebest 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 thisForm 10-K. þIndicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer andlarge accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one): Large Accelerated Filer ¨ Accelerated Filer þ Non-Accelerated Filer ¨ Smaller reporting company ¨(Do not check if a 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 þ Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The aggregate market value of the common stock held by non-affiliates of the registrant (26,633,462 shares) based on the $18.48 closing price of theregistrant’s common stock as reported on the NYSE MKT on June 30, 2016, was $492,186,378. For purposes of this computation, all officers, directors and10% beneficial owners of the registrant are deemed to be affiliates. Such determination should not be deemed to be an admission that such officers, directorsor 10% beneficial owners are, in fact, affiliates of the registrant. As of March 8, 2017, 40,998,289 shares of common stock, par value $.0001 per share, of the registrant were outstanding.Documents Incorporated by Reference Portions of our definitive proxy statement for the 2017 Annual Meeting of Stockholders, to be filed within 120 days after the end of the fiscal yearcovered by this Form 10-K, are incorporated by reference into Part III hereof. Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Page PART I Item 1.Business1Item 1A.Risk Factors5Item 1B.Unresolved Staff Comments14Item 2.Properties14Item 3.Legal Proceedings15Item 4.Mine Safety Disclosures15 PART II Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities16Item 6.Selected Financial Data17Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations19Item 7A.Quantitative and Qualitative Disclosures About Market Risk33Item 8.Financial Statements and Supplementary Data34Item 9.Changes In and Disagreements with Accountants on Accounting and Financial Disclosure34Item 9A.Controls and Procedures34Item 9B.Other Information37 PART III Item 10.Directors, Executive Officers and Corporate Governance37Item 11.Executive Compensation37Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters37Item 13.Certain Relationships and Related Transactions, and Director Independence37Item 14.Principal Accounting Fees and Services37 PART IV Item 15.Exhibits, Financial Statement Schedules38Item 16.Form 10-K Summary41 Signatures41iSource: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.CAUTIONARY NOTES REGARDING FORWARD-LOOKING STATEMENTS Certain statements contained or incorporated by reference in this Form 10-K ("Annual Report") may constitute "forward-looking statements" within themeaning of Section 27A of the Securities Act and Section 21E of the Securities Act of 1934, as amended (the "Exchange Act"). Any statements included orincorporated by reference in this Annual Report about our expectations, beliefs, plans, objectives, assumptions or future events or performance are nothistorical facts and are forward-looking statements. Should one or more of these risks or uncertainties materialize, or should underlying assumptions proveincorrect, actual results may differ from those anticipated, estimated or expected. You can identify these forward-looking statements by the use of words orphrases such as "may," "likely," "potentially," "will," "expect," "intend," "anticipate," "projects," "believe," "estimate," "plan," "could," "should,""opportunity," and "continue" or similar words, whether in the negative or the affirmative. Forward-looking statements include information concerning ourbusiness strategy, plans, and goals and objectives, as well as information concerning the expected timing, consummation and financial benefits of certaintransactions.Forward-looking statements are based on our beliefs, assumptions and expectations of our future performance, taking into account information currentlyavailable to us. These forward-looking statements are subject to known and unknown risks, uncertainties and factors or events that may cause our actualresults, performance or achievements expressed or implied by such forward-looking statements, many of which are beyond our control. These statementsinclude, among others, statements concerning:•our business and our strategy for continuing to pursue our business;•our integration of the operations from recent and anticipated acquisitions, and realization of anticipated benefits and synergies in connection withthe acquisitions;•anticipated growth of our industry;•expectations as to our future revenue, margins, expenses, cash flows, profitability and capital requirements; and•other statements of expectations, beliefs, future plans and strategies, anticipated developments and other matters that are not historical facts. These statements are subject to risks and uncertainties, including financial, regulatory, environmental, and industry projections, that could cause actualevents or results to differ materially from those expressed or implied by the statements. Factors, contingencies, and risks that could cause our actual results todiffer materially from these forward-looking statements include, but are not limited to, the effects on our business and customers of general economic andfinancial market conditions, as well as the following:•our ability to achieve the expected benefits of certain transactions;•our ability to develop and market new products and services that meet customer demands and generate acceptable margins;•our reliance on several large customers;•our ability to negotiate and enter into acceptable contract terms with our suppliers;•our ability to attract and retain qualified management and other personnel;•competition in the industry in which we do business;•failure of the third-party communications networks on which we depend;•legislation or regulatory environments, requirements or changes adversely affecting the businesses in which we are engaged;•our ability to maintain our databases, management systems and other intellectual property;•our ability to prevent process and system failures or security breaches that significantly disrupt the availability and quality of the services that weprovide;•our ability to maintain adequate liquidity and produce sufficient cash flow to fund acquisitions and capital expenditures;•our ability to meet all the terms and conditions of our debt obligations;•our ability to obtain capital to grow our business;•our ability to utilize our net operating losses;•expectations regarding the trading price of our common stock; and•our ability to complete acquisitions or divestitures and effectively integrate any business or operation acquired.iiSource: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Among the factors that could cause actual results to differ materially from those indicated in the forward-looking statements are risks and uncertaintiesinherent in our business. Such risks and uncertainties include, among others, factors discussed under the section entitled "Risk Factors" in this Annual Report.Any such risks and uncertainties could materially and adversely affect our results of operations, our profitability and our cash flows, which could, in turn,have a material adverse impact on our ability to make payments on our debt. You should not place undue reliance on any forward-looking statements. Forward-looking statements speak only as of the date of which statements weremade. We expressly disclaim any obligation to update our forward-looking statements, whether as a result of new information, future events or circumstances,or otherwise, except as required by law.You should understand that our actual future results may be materially different from what we expect. We qualify all of the forward-looking statementsincluded or incorporated by reference in this Annual Report by these cautionary statements. Although we believe that our plans, intentions, expectations,strategies and prospects as reflected in our forward-looking statements are reasonable, we cannot guarantee future results, events, levels of activity,performance or achievement. You should carefully consider the risk factors contained herein, in addition to the other information included or incorporated byreference.iiiSource: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.PART IITEM 1. BUSINESSOverviewGTT Communications, Inc. ("GTT," the "Company," "we" or "us") is a provider of cloud networking services to multinational clients. We offer a broadportfolio of global services including: wide area network ("WAN") services; Internet services; managed network and security services; and voice and unifiedcommunication services.Our global Tier 1 IP network delivers connectivity for our clients around the world. We provide services to leading multinational enterprises, carriers andgovernment customers in over 100 countries. We differentiate ourselves from our competition by delivering service to our clients with simplicity, speed andagility.We are a Delaware corporation founded in 2005. As of December 31, 2016, we had 662 full-time equivalent employees.StrategyMultinational clients are shifting greater amounts of traffic to cloud-based applications and outsourcing IT infrastructure services, which createssignificant opportunities for GTT. Our cloud connectivity services are designed to capitalize on these growing market demands. We believe our globalnetworking services provide a better way for multinational clients to reach the cloud.Our strategy is focused on three key elements:Expanding cloud networking services to multinational clients. Our network assets and services are built to serve the requirements of large, global clients.These organizations have increasing demands for scalable and flexible network connectivity services due to the rapid adoption of cloud-based applicationsand increasing data usage across locations driven by increasing file sizes, voice, video and real-time collaboration tools. In addition, enterprise CIOs andtechnology executives are increasingly using third-party management of their network and IT infrastructure so their teams can focus on applicationdevelopment and performance. We are one of the few non-incumbent providers with the product breadth, global scope and operating experience to meet thesophisticated networking needs and managed service requirements of the world’s most demanding multinational clients, and we will continue to look forways to expand our portfolio of services to meet our clients’ needs.Extending secure network connectivity to any location in the world and any application in the cloud. We operate one of the five largest IP networks inthe world, and our global access footprint is one of the broadest in the industry. Network connectivity is a fundamental requirement for clients to realize thefull benefits of cloud computing, and they are increasingly demanding dedicated, secure and high-bandwidth connectivity between their various officelocations and leading cloud service providers for mission-critical applications and services. We can connect any client location in the world to our globalnetwork through our relationships with approximately 2,000 regional suppliers. We will continue to seek opportunities to expand our global footprint toenable our clients to connect to the cloud more efficiently and cost-effectively.Delivering outstanding client experience by living our core values of Simplicity, Speed and Agility. We strive to be easy to work with, fast andresponsive, and to say “yes” to our clients. We are committed to delivering high-quality, reliable and secure services that will continue to attract new clientsand create additional opportunities with existing clients. We believe that by operating all areas of our business with simplicity, speed and agility, we are ableto offer customers a better service experience than larger incumbent providers.We execute on this strategy both organically and through strategic acquisitions. We have completed many acquisitions throughout our history, and webelieve we have consistently demonstrated an ability to acquire and effectively integrate companies, realize cost synergies, and organically grow revenuepost-acquisition. Acquisitions have the ability to increase the scale of our operations, which in turn affords us the ability to expand our operating leverage,extend our network reach, augment our product set, and broaden our customer base. We believe our ability to realize significant cost synergies throughacquisitions provides us with a competitive advantage in future consolidation opportunities within our industry. We will continue to evaluate theseopportunities and are regularly involved in acquisition discussions. We will evaluate these opportunities based on a number of criteria, including thestrategic fit within our existing businesses, the ability to integrate people, systems and network quickly, and the opportunity to create value through therealization of cost synergies.1Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Global NetworkOur global network assets are deployed in North America, Europe, the Middle East, Asia and Australia. Our Tier 1 IP network consists of approximately250 points of presence ("PoPs") in top data centers around the world, connected with resilient and redundant transport. Based on industry data, our IPbackbone is consistently ranked a top five network in terms of internet routes.Our private, long-haul optical network provides the foundation for a multiprotocol label switching ("MPLS") mesh between core backbone routers ineach market. We engineer our network to provide high levels of capacity and performance, even when utilizing enhanced services such as traffic analysis andfiltering. We route network traffic to ensure customer applications take the shortest path possible through the network, ensuring performance, reliability andsecurity.We employ a "capex light" model, which leverages the sophisticated routing and switching infrastructure in our core global network, then integratesnetwork access leased from last mile carriers. This business model benefits us and our customers. We are able to quickly add capacity as needed, minimizeinfrastructure deployment, maintenance and replacement costs, and focus solely on designing the best network solutions for our clients' specific needs.Service OfferingsWe deliver four primary service offerings to our customers:Wide Area Network ServicesWe provide Layer 2 (Ethernet) and Layer 3 (MPLS) WAN solutions to meet the growing needs of multinational clients regardless of location. We designand implement custom private, public and hybrid cloud network solutions, offering bandwidth speeds from 10 Mbps to 100 Gbps per port with burstable andaggregate bandwidth capabilities. Using our advanced multipoint and virtual private lan service ("VPLS") functionality, which provide Ethernet-basedmultipoint to multipoint communication over IP or MPLS networks, customers can directly connect locations anywhere in the world with a single Ethernetport at each location, sharing information between locations as easily as over a local network. Our WAN service is available in point-to-point, point-to-multipoint, and full mesh configurations. All services are available on a protected basis with the ability to specify pre-configured alternate routes to minimizethe impact of any network disruption.Through GTT’s WAN services, clients can securely connect to cloud service providers in data centers and exchanges around the world. Our CloudConnect feature provides private, secure, pre-established connectivity to leading cloud service providers. Clients can connect to GTT in one location andhave access to a broad cloud service provider ecosystem from anywhere in the world.Internet ServicesWe offer customers scalable, high-bandwidth global Internet connectivity and IP transit with guaranteed availability and packet delivery. Our Internetservices offer flexible connectivity with multiple port interfaces including Fast Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet and 100 Gigabit Ethernet. Wealso offer broadband and wireless access services. We support a dual stack of IPv4 and IPv6 protocols, enabling the delivery of seamless IPv6 servicesalongside existing IPv4 services.Managed ServicesWe offer fully managed network services, including managed equipment, managed security services and managed remote access, enabling customers tofocus on their core business. These end-to-end services cover the design, procurement, implementation, monitoring and maintenance of a customer’s network.•Managed CPE. Managed CPE provides a turnkey solution for the end-to-end management of customer premise equipment, from premises throughthe core network. This includes the design, procurement, implementation, monitoring and maintenance of equipment including routers, switches,servers and Wi-Fi access points.•Security Services. Our cloud-based and premises-based security services provide a comprehensive, multi-layered security solution that protects thenetwork while meeting the most stringent security standards. Our Unified Threat Management (“UTM”) services include advanced firewall, intrusiondetection, anti-virus, web filtering and anti-spam. UTM services also cover a broad range of compliance requirements, offering customers Security-as-a-Service versions of managed logging, vulnerability scanning and security information management that meet numerous security standards,including Payment Card Industry / Cardholder Information Security Program ("PCI/CISP") compliance.2Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.•Managed Remote Access. Our Managed Remote Access service provides clients of all sizes with secure remote access to their network applicationsfrom any device, anywhere, anytime from any authorized user. Managed Remote Access extends network reach, allowing trusted users to establish asecure data connection from any browser or device using Transport Layer Security to encrypt all traffic and protect the network from unauthorizedusers.Voice and Unified Communication Services•SIP Trunking. Our SIP Trunking service is an enterprise-built unified communications offering that integrates voice, video and chat onto a single IPconnection, driving efficiency and productivity organization-wide. The service is interoperable with key Unified Communications ("UC") platformssuch as Cisco, Avaya, ShoreTel, Siemens and Microsoft to support collaboration requirements, as well as with legacy infrastructure. SIP Trunkingbrings substantial cost savings by eliminating legacy infrastructure and providing more predictable local and long-distance costs. SIP Trunking isdelivered over our fully redundant and robust global network that is purpose-built to handle bandwidth-intensive communication services. Theservice includes a full suite of international telephony services, including direct inward dialing ("DIDs"), toll-free numbers, termination andemergency services. We also offer customized redundancy options to meet clients' most stringent disaster recovery requirements, as well as a securetrunking option for encryption of sensitive call signaling and media.•Enterprise PBX. Our Enterprise PBX service allows clients to eliminate traditional voice infrastructure with communication services deliveredthrough the cloud. The offering includes fully hosted and hybrid models for maximum flexibility. Enterprise PBX includes full PBX features, such ascall transfer, music on hold, voicemail, unified messaging, company directory, auto attendant and enhanced call routing. The user managementportal provides integrated and consistent functionality, regardless of user location. Clients can further expand capabilities through additional cloud-based features, such as contact center and audio conferencing.OperationsSupplier ManagementWe have strong, long-standing relationships with a diverse group of approximately 2,000 suppliers from which we source our global networkconnectivity, last-mile bandwidth capacity and other services. We maintain multiple supplier agreements covering diverse routes throughout our network toensure service continuity, competitive pricing, bandwidth capacity and improved carrier responsiveness.For our core global network, supplier agreements are typically one-year commitments with an option to renew, which enables us to (i) maintainsignificant flexibility regarding the amount of bandwidth purchased and (ii) consistently benefit from the latest competitive pricing. For last-mileconnections, we typically structure the lease term to match the term of the underlying customer contract.Our supplier management team continually monitors supplier performance, network information and pricing to provide greater choice, flexibility andcost savings for our customers.Network OperationsOur network is supported by global Network Operations Centers (NOCs) located in Austin, Texas; Belfast, Northern Ireland; Denver, Colorado, LemontFurnace, Pennsylvania; and Seattle, Washington. The NOCs provide active monitoring, prioritization and resolution of network-related events 24 hours perday, 365 days per year. Our NOCs also respond to customer network inquiries, and coordinate and notify customers of maintenance activities.IT SystemsWe provide customers with advanced routing control and visibility into their network performance. Our proprietary online client portal providescustomers with online access to monitor their network performance and track real-time statistics.We have developed a comprehensive Client Management Database (CMD) that manages our network, customer and supplier contracts, sales quoting,service provisioning, and customer and supplier invoicing. CMD also supports our financial reporting and other operational processes. Our CMD system hasbeen in operation since our inception, and its capabilities and processes are continually enhanced and automated. The CMD system provides ourmanagement team with visibility into all areas of our operations and allows us to operate with simplicity, speed and agility.3Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Sales and MarketingWe market our products and services through a global direct sales force and indirect sales channels. We have sales representatives throughout NorthAmerica, Europe, Middle East, and Asia. Our sales activities are specifically focused on building relationships with new clients and driving expansion withinexisting client accounts. Because we typically sell to large, global clients and our markets are highly competitive, we believe that personal relationships andquality of service delivery remain important in winning new and repeat customer business. We supplement our direct sales approach with a trustedcommunity of agents and integrators who already have personal relationships with many leading multinational clients.Our sales force is supported by global service delivery organization and other support teams. The service delivery team ensures the successfulimplementation of customer services after the sale. A service delivery manager is assigned to each customer order to ensure that the underlying networkfacilities required for the solution are provisioned, that the customer is provided with status reports on its service, and that any difficulties related to theinstallation of a customer order are proactively managed.Marketing activities are designed to generate awareness and familiarity with our value proposition to multinational clients, develop new products tomeet customer needs and communicate to key customer decision makers.CustomersOur customer base consists of enterprise, carrier and government clients around the world. Our multinational enterprise client base includes leadingorganizations in financial services, healthcare, technology, manufacturing, retail media and entertainment, and business services verticals. Carrier customersinclude some of the largest telecommunications firms in the world, who rely on our global network to extend their reach.Our customer contracts for network services range from one to five years or more for the initial term. Following the initial term, these agreementstypically provide for automatic renewal for specified periods ranging from one month to one year. Our prices are fixed for the duration of the contract, and wetypically bill monthly in advance for such services. If a customer terminates its agreement, the terms of our customer contracts typically require full recoveryof any amounts due for the remainder of the term or, at a minimum, our liability to any underlying suppliers.CompetitionWe operate in a highly competitive industry. Our competitors include incumbent local exchange carriers, competitive local exchange carriers, Internetservice providers and other facilities-based operators. Many of these competitors are large, well-capitalized, and have strong market presence, brandrecognition and existing customer relationships. We also face competition from smaller providers who offer network services and managed enterprisesolutions similar to ours. Specific competitors vary based on geography and product offerings.Regulatory MattersWe are subject to federal, state and foreign regulations. In the United States, the Federal Communications Commission (FCC) has jurisdiction overinterstate telecommunications and international telecommunications that originate or terminate in the United States. State Public Utilities Commissions(PUCs) have similar powers with respect to intrastate telecommunications. A foreign country’s laws and regulations apply to telecommunications thatoriginate or terminate in, or in some instances traverse, that country. The regulation of the telecommunications industry is constantly evolving, and variesfrom state to state and from country to country.Where certification, licensing or authorization is required, carriers are required to comply with certain ongoing responsibilities. For example, we arerequired to submit periodic reports to various telecommunications regulatory authorities relating to the provision of services within the relevant jurisdiction.In addition, we are responsible for the payment of certain regulatory fees and the collection and remittance of certain surcharges and fees associated with theprovision of telecommunications services depending upon the jurisdiction, the type of service and the type of customer.Intellectual PropertyWe do not own any patent registrations, applications or licenses.4Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Available InformationWe make available, through our website, www.gtt.net, our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, andexhibits and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, promptly after they areelectronically filed with the Securities and Exchange Commission (the "SEC"). We caution you that the information on our website is not part of this or anyother report we file with, or furnish to, the SEC.In addition to our website, you may read and copy any materials we file with the SEC at www.sec.gov.ITEM 1A. RISK FACTORS We operate in a rapidly changing environment that involves a number of risks, some of which are beyond our control. Below are the risks anduncertainties we believe are most important for you to consider. Additional risks and uncertainties not presently known to us, which we currently deemimmaterial or which are similar to those faced by other companies in our industry or telecommunications and/or technology companies in general, may alsoimpair our business operations. If any of these risks or uncertainties actually occurs, our business, financial condition and operating results could bematerially adversely affected.Risks Related to Our Business and OperationsOur business could suffer delays and problems due to the actions of network providers on whom we are partially dependent. Most of our customers are connected to our network by means of communications lines that are provided as services by local telephone companies andothers. We may experience problems with the installation, maintenance and pricing of these lines and other communications links, which could adverselyaffect our results of operations and our plans to add additional customers to our network using such services. We attempt to mitigate this risk by using manydifferent providers so that we have alternatives for linking a customer to our network. Competition among the providers tends to improve installationintervals, maintenance and pricing.Our network may be the target of potential cyber-attacks and other security breaches that could have significant negative consequences.Our business depends on our ability to limit and mitigate interruptions or degradation to our network availability. Our network, including our routers,may be vulnerable to unauthorized access, computer viruses, cyber-attacks, distributed denial of service (DDOS), and other security breaches. An attack on orsecurity breach of our network could result in interruption or cessation of services, our inability to meet our service level commitments, and potentiallycompromise customer data transmitted over our network. We cannot guarantee that our security measures will not be circumvented, thereby resulting innetwork failures or interruptions that could impact our network availability and have a material adverse effect on our business, financial condition andoperational results. We may be required to expend significant resources to protect against such threats, and may experience a reduction in revenues,litigation, and a diminution in goodwill, caused by a breach. Although our customer contracts limit our liability, affected customers and third parties mayseek to recover damages from us under various legal theories.We are required to maintain, repair, upgrade and replace our network and facilities and our network could suffer serious disruption if certain locationsexperience serious damage.Our business requires that we maintain, upgrade, repair and periodically replace parts of our network facilities. This requires, and will continue to require,management time and the expenditure of capital on a regular basis. In the event that we fail to maintain, upgrade or replace essential portions of our networkfacilities, it could lead to a material degradation in the level of service that we provide, which would adversely affect our business. There are certain locations through which a large amount of our Internet traffic passes. Examples are facilities in which we exchange traffic with othercarriers, the facilities through which our transatlantic traffic passes, and certain of our network hub sites. If any of these facilities were destroyed or seriouslydamaged, a significant amount of our network traffic could be disrupted. Because of the large volume of traffic passing through these facilities, our ability(and the ability of carriers with whom we exchange traffic) to quickly restore service would be challenged. In the event of such damage to any of our ownedinfrastructure, we will be required to incur expenses to repair such damage. There could be parts of our network or the networks of other carriers that could notbe quickly restored or that would experience substantially reduced service for a significant time. If such a disruption occurs, our reputation could benegatively impacted which may cause us to lose customers and adversely affect our ability to attract new customers, resulting in an adverse effect on ourbusiness, operating results and cash flows.5Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.We may have difficulty and experience disruptions as we add features and upgrade our network. We are constantly upgrading our network and implementing new features and services. This process involves reconfiguring our network and makingchanges to our operating systems. In doing so we may experience disruptions that affect our customers, our revenue, and our ability to grow. We may requireadditional resources to accomplish this work in a timely manner. That could cause us to incur unexpected expenses or delay portions of this effort to thedetriment of our ability to provide service to our customers.We may make purchase commitments to vendors for longer terms or in excess of the volumes committed by our underlying customers, or we mayoccasionally have certain sales commitments to customers that extend beyond our commitments from our underlying suppliers.We attempt to match our purchase of network capacity from our suppliers and service commitments from our customers. However, from time to time, wemay contract for obligations to our suppliers that exceed the duration of the related customer contracts or that are for capacity in excess of the amount forwhich we have customer commitments. This could arise:•based upon the terms and conditions available from our suppliers;•from an expectation that we will be able to utilize the excess capacity;•as a result of a breach of a customer’s commitment to us; and•to support fixed elements of our network.Under any of these circumstances, we may incur the cost of the network capacity from our supplier without having corresponding revenue fromcustomers, which could result in a material and adverse impact on our operating results.Conversely, from time to time, our customer may contract for services that extend beyond the duration of the underlying vendor commitment. This maycause us to seek a renewal of services or a shorter period than we typically seek, or a shortened service period at higher prices. Our financial results could beadversely affected if we are unable to purchase extended service from a supplier at a cost sufficiently low to maintain margins for the remaining term of ourcommitment to a customer. While we have not historically encountered material price increases from suppliers with respect to continuation or renewal ofservices after expiration of initial contract terms, we cannot be certain that we would be able to obtain similar terms and conditions from suppliers goingforward.Our connections to the Internet require us to establish and maintain peering relationships with other providers, which we may not be able to maintain. The Internet is composed of various network providers who operate their own networks that interconnect at public and private interconnection points.Our network is one such network. In order to obtain Internet connectivity for our network, we must establish and maintain relationships with other providers,including many providers that are customers, and incur the necessary capital costs to locate our equipment and connect our network at these variousinterconnection points. By entering into what are known as settlement-free peering arrangements, providers agree to exchange traffic between their respective networks withoutcharging each other. Our ability to avoid the higher costs of acquiring paid dedicated network capacity (transit or paid peering) and to maintain high networkperformance is dependent upon our ability to establish and maintain peering relationships and to increase the capacity of these peering connections. Theterms and conditions of our peering relationships may also be subject to adverse changes, which we may not be able to control. If we are not able to maintainor increase our peering relationships in all of our markets on favorable terms, we may not be able to provide our customers with high performance oraffordable or reliable services, which could cause us to lose existing and potential customers, damage our reputation and have a material adverse effect on ourbusiness.Our core network infrastructure equipment is provided by a single vendor. We purchase from Juniper Networks, Inc. (Juniper) the majority of the routers and transmission equipment used in our core IP network. If Juniper fails toprovide equipment on a timely basis or fails to meet our performance expectations, including in the event that Juniper fails to enhance, maintain, upgrade orimprove its products, hardware or software we purchase from them when and how we need, we may be delayed or unable to provide services as and whenrequested by our customers. We also may be unable to upgrade our network and face greater difficulty maintaining and expanding our network. Transitioningfrom Juniper to another vendor would be disruptive because of the time and expense required to learn to install, maintain and operate the new vendor'sequipment and to operate a multi-vendor network. Any such disruption could increase our costs, decrease our operating efficiencies and have an adverseeffect on our business, results of operations and financial condition.6Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Juniper may also be subject to litigation with respect to the technology on which we depend, including litigation involving claims of patentinfringement. Such claims have been growing rapidly in the communications industry. Regardless of the merit of these claims, they can result in the diversionof technical and management personnel, or require us to obtain non-infringing technology or enter into license agreements for the technology on which wedepend. There can be no assurance that such non-infringing technology or licenses will be available on acceptable terms and conditions, if at all.If the information systems that we depend on to support our customers, network operations, sales, billing and financial reporting do not perform asexpected, our operations and our financial results may be adversely affected.We rely on complex information systems to operate our network and support our other business functions. Our ability to track sales leads, close salesopportunities, provision services, bill our customers for our services and prepare our financial statements depends upon the effective integration of ourvarious information systems. If our information systems, individually or collectively, fail or do not perform as expected, our ability to process and provisionorders, to make timely payments to vendors, to ensure that we collect amounts owed to us and prepare our financial statements would be adversely affected.Such failures or delays could result in increased capital expenditures, customer and vendor dissatisfaction, loss of business or the inability to add newcustomers or additional services, and the inability to prepare accurate and timely financial statements, all of which would adversely affect our business andresults of operations.Our business depends on agreements with carrier neutral data center operators, which we could fail to obtain or maintain.Our business depends upon access to customers in carrier neutral data centers, which are facilities in which many large users of the Internet house thecomputer servers that deliver content and applications to users by means of the Internet and provide access to multiple Internet access networks. Most carrierneutral data centers allow any carrier to operate within the facility (for a standard fee). We expect to enter into additional agreements with carrier neutral datacenter operators as part of our growth plan. Current government regulations do not require carrier neutral data center operators to allow all carriers access onterms that are reasonable or nondiscriminatory. We have been successful in obtaining agreements with these operators in the past and have generally foundthat the operators want to have us located in their facilities because we offer low-cost, high-capacity Internet service to their customers. Any deterioration inour existing relationships with these operators could harm our sales and marketing efforts and could substantially reduce our potential customer base.We may be liable for the material that content providers distribute over our network.Although we believe our liability for third-party information stored on or transmitted through our networks is limited, the liability of private networkoperators is impacted both by changing technology and evolving legal principles. As a private network provider, we could be exposed to legal claimsrelating to third-party content stored or transmitted on our networks. Such claims could involve, among others, allegations of defamation, invasion ofprivacy, copyright infringement, or aiding and abetting restricted activities such as online gambling or pornography. If we decide to implement additionalmeasures to reduce our exposure to these risks or if we are required to defend ourselves against these kinds of claims, our operating results and financialcondition could be negatively affected. In the past, we have generated net losses and used more cash than we have generated from operations, and we may continue to do so.We have historically generated net losses and such losses may continue in the future. These net losses primarily have been driven by acquisition-relatedexpenses, depreciation, amortization, interest expense, and share-based compensation. We cannot assure you that we will generate net income in the future.We have also consistently consumed our entire positive cash flow generated from operating activities with our investing activities. Our investingactivities have consisted principally of the acquisition of businesses as well as additions to property and equipment. We have funded the excess of cash usedin investing activities over cash provided by operating activities with proceeds from equity and debt issuances.We intend to continue to invest in expanding our business and pursuing acquisitions that we believe provide an attractive return on our capital. Theseinvestments may continue to exceed the amount of cash flow available from operations after debt service requirements. To the extent that our investmentsexceed our cash flow from operations, we plan to rely on potential future debt or equity issuances, which could increase interest expense or dilute the interestof stockholders, as well as cash on hand and borrowings under our revolving credit facility. We cannot assure you, however, that we will be able to obtain orcontinue to have access to sufficient capital on reasonable terms, or at all, to successfully grow our business.7Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Our revenue is relatively concentrated among a small number of customers, and the loss of any of these customers could significantly harm our business,financial condition, results of operations and cash flows.Our largest single customer, based on recurring revenue, accounted for approximately 5% of our revenue for the year ended December 31, 2016, andrevenues from our top five customers accounted for approximately 15% of our revenue for the year ended December 31, 2016. We currently depend, andexpect to continue to depend, upon a relatively small number of customers for a significant percentage of our revenue. Many of these customers are alsocompetitors for some or all of our service offerings. Our customer contracts typically have terms of one to three years. Our customers may elect not to renewthese contracts. Furthermore, our customer contracts are terminable for cause if we breach a material provision of the contract. We may face increasedcompetition and pricing pressure as our customer contracts become subject to renewal. Our customers may negotiate renewal of their contracts at lower rates,for fewer services or for shorter terms. Many of our customers are in the telecommunications industry, which is undergoing consolidation. To the extent thattwo or more of our customers combine, they may be able to use their greater size to negotiate lower prices from us and may purchase fewer services from us,especially if their networks overlap. If we are unable to successfully renew our customer contracts on commercially acceptable terms, or if our customercontracts are terminated, our business could suffer.We are also subject to credit risk associated with the concentration of our accounts receivable from our key customers. If one or more of these customerswere to become bankrupt, insolvent or otherwise were unable to pay for the services provided by us, we may incur significant write-offs of accountsreceivable or incur impairment charges.Future acquisitions are a component of our strategic plan, and will include integration and other risks that could harm our business.We have grown rapidly and intend to continue to acquire complementary businesses and assets. This exposes us to the risk that when we evaluate apotential acquisition target we over-estimate the target’s value and, as a result, pay too much for it. We also cannot be certain that we will be able tosuccessfully integrate acquired assets or the operations of the acquired entity with our existing operations. Businesses and assets that we have acquired ormay acquire in the future may be subject to unknown or contingent liabilities for which we may have limited or no recourse against the sellers. While weusually require the sellers to indemnify us with respect to breaches of representations and warranties that survive, such indemnification is often limited andsubject to various claim expiration periods, materiality thresholds, a significant deductible or an aggregate cap on losses. As a result, there is no guaranteethat we will recover any amounts with respect to losses due to breaches by the sellers of their representations and warranties. In addition, the total amount ofcosts and expenses that we may incur with respect to liabilities associated with acquired properties and entities may exceed our expectations, which mayadversely affect our operating results and financial condition.Difficulties with integration could cause material customer disruption and dissatisfaction, which could in turn increase churn and reduce new sales.Additionally, we may not be able to integrate acquired businesses in a manner that permits us to realize the cost synergies we anticipate. Our actual costsynergies, cost savings, growth opportunities, and efficiency and operational benefits resulting from any acquisition may be lower and may take longer torealize than we currently expect.We may incur additional debt or issue additional equity to assist in the funding of these potential transactions, which may increase our leverage and/ordilute the interest of stockholders. Further, additional transactions could cause disruption of our ongoing business and divert management’s attention fromthe management of daily operations to the closing and integration of the acquired business. Acquisitions also involve other operational and financial riskssuch as:•increased demand on our existing employees and management related to the increase in the size of the business and the possible distraction from ourexisting business due to the acquisition;•loss of key employees and salespeople of the acquired business;•liabilities of the acquired business, both unknown and known at the time of the consummation of the acquisition;•discovery that the financial statements we relied on to buy a business were incorrect;•expenses associated with the integration of the operations of the acquired business;•the possibility of future impairment, write-downs of goodwill and other intangibles associated with the acquired business;•finding that the services and operations of the acquired business do not meet the level of quality of those of our existing services and operations;and•recognizing that the internal controls of the acquired business were inadequate.We are growing rapidly and may not maintain or efficiently manage our growth.We have rapidly grown our company through acquisitions of companies and assets and the acquisition of new customers through our own sales efforts. Inorder to become consistently profitable and consistently cash flow positive, we need to both retain existing8Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.customers and continue to add a large number of new customers. While no single customer accounted for more than 6% of our 2016 revenue, the loss of orreduced purchases from several significant customers could impair our growth, cash flow and profitability. Customers can be reluctant to switch providers ofbandwidth services because it can involve substantial expense and technical difficulty. That can make it harder for us to acquire new customers through ourown sales efforts. Our expansion may place strains on our management and our operational and financial infrastructure. Our ability to manage our growth willbe particularly dependent upon our ability to:•expand, develop and retain an effective sales force and other qualified personnel;•maintain the quality of our operations and our service offerings;•attract customers to switch from their current providers to us in spite of the costs associated with switching providers;•maintain and enhance our system of internal controls to ensure timely and accurate reporting; and•expand our operational information systems in order to support our growth, including integrating new customers without disruption. We expect that economies of scale will allow us to increase revenue while incurring incremental costs that are proportionately lower than thoseapplicable to our existing businesses. If the increased costs required to support our revenue growth turn out to be greater than anticipated, we may be unableto improve our profitability and/or cash flows even if our revenue growth goals are achieved.We are highly dependent on our management team and other key employees.We expect that our continued success will largely depend upon the efforts and abilities of members of our management team and other key employees.Our success also depends upon our ability to identify, attract, develop, and retain qualified employees. If we lost members of our management team or otherkey employees, or if we are unable to recruit qualified employees in the future, it would likely have a material adverse effect on our business and our cashflows.The international operations of our business expose us to risks that could materially and adversely affect the business.We have operations and investments outside of the United States, as well as rights to undersea cable capacity extending to other countries, that expose usto risks inherent in international operations. These include:•general economic, social and political conditions;•the difficulty of enforcing agreements and collecting receivables through certain foreign legal systems;•tax rates in some foreign countries may exceed those in the U.S.;•foreign currency exchange rates may fluctuate, which could adversely affect our results of operations and the value of our international assets andinvestments;•foreign earnings may be subject to withholding requirements or the imposition of tariffs, exchange controls or other restrictions;•difficulties and costs of compliance with foreign laws and regulations that impose restrictions on our investments and operations, with penalties fornoncompliance, including loss of licenses and monetary fines;•difficulties in obtaining licenses or interconnection arrangements on acceptable terms, if at all; and•changes in U.S. laws and regulations relating to foreign trade and investment.We may as part of our expansion strategy increase our exposure to international investments and operations.Some of our customer agreements contain service level obligations that could subject us to liability or the loss of revenue.Some of our contracts with customers contain service level guarantees (including network availability) and service delivery date targets, which, if notmet, enable customers to claim credits and, under certain conditions, terminate their agreements. Our failure to meet our service level guarantees couldadversely affect our business, financial condition and results of operations. Lost revenue from failure to meet service level guarantees was de minimis for theyears ended December 31, 2015 and 2016. While we typically have carve-outs for force majeure events, many events, such as fiber cuts, equipment failureand third-party vendors being unable to meet their underlying commitments with us, could impact our ability to meet our service level agreements, whichcould adversely affect our financial conditions and operations.Our international operations expose us to currency risk.We conduct a portion of our business using the British Pound Sterling and the Euro. Appreciation of the U.S. Dollar adversely affects our consolidatedrevenue. For example, the U.S. Dollar has appreciated significantly against the Euro and the Pound in9Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.recent periods. Since we tend to incur costs in the same currency in which those operations realize revenue, the effect on operating income and operating cashflow is largely mitigated. However, if the U.S. Dollar continues to appreciate significantly, future revenues, operating income and operating cash flows couldbe adversely affected.Our future tax liabilities are not predictable or controllable. If we become subject to increased levels of taxation, our financial condition and operationscould be negatively impacted.We provide telecommunication and other services in multiple jurisdictions across the United States and Europe and are, therefore, subject to multiplesets of complex and varying tax laws and rules. We cannot predict the amount of future tax liabilities to which we may become subject. Any increase in theamount of taxation incurred as a result of our operations or due to legislative or regulatory changes would be adverse to us. In addition, we may becomesubject to income tax audits by many tax jurisdictions throughout the world. It is possible that certain tax positions taken by us could result in tax liabilitiesfor us. While we believe that our current provisions for taxes are reasonable and appropriate, we cannot assure you that these items would be settled for theamounts accrued or that we will not identify additional exposures in the future.We cannot assure you whether, when or in what amounts we will be able to use our net operating losses, or when they will be depleted.At December 31, 2016, we had $71.7 million of U.S. federal net operating loss carryforwards (“NOLs”) net of limitations under Section 382. Undercertain circumstances, these NOLs can be used to offset our future federal and certain taxable income. If we experience an “ownership change,” as defined inSection 382 of the Internal Revenue Code and related Treasury regulations at a time when our market capitalization is below a certain level, our ability to usethe NOLs could be substantially limited. This limit could impact the timing of the usage of the NOLs, thus accelerating cash tax payments or causing NOLsto expire prior to their use, which could affect the ultimate realization of the NOLs.Furthermore, transactions that we enter into, as well as transactions by existing or future 5% stockholders that we do not participate in, could cause us toincur an “ownership change,” which could prevent us from fully utilizing our NOLs to reduce our federal income taxes. These limitations could cause us notto pursue otherwise favorable acquisitions and other transactions involving our capital stock, or could reduce the net benefits to be realized from any suchtransactions. Despite this, we expect to use substantially all of these NOLs and certain other deferred tax attributes as an offset to our federal future taxableincome, although the timing of that use will depend upon our future earnings and future tax circumstances. If and when our NOLs are fully utilized, we expectthat the amount of our cash flow dedicated to the payment of federal taxes will increase substantially.Impairment of our intellectual property rights and our alleged infringement on other companies' intellectual property rights could harm our business.We cannot assure you that the steps taken by us to protect our intellectual property rights will be adequate to deter misappropriation of proprietaryinformation or that we will be able to detect unauthorized use and take appropriate steps to enforce our intellectual property rights. We also are subject to therisk of litigation alleging infringement of third-party intellectual property rights. Any such claims could require us to spend significant sums in litigation,pay damages, develop non-infringing intellectual property or acquire licenses to the intellectual property that is the subject of the alleged infringement.We issue projected results and estimates for future periods from time to time, and such projections and estimates are subject to inherent uncertainties andmay prove to be inaccurate.Financial information, results of operations and other projections that we may issue from time to time are based upon our assumptions and estimates.While we believe these assumptions and estimates to be reasonable when they are developed, they are inherently subject to significant business, economicand competitive uncertainties and contingencies, many of which are beyond our control. You should understand that certain unpredictable factors couldcause our actual results to differ from our expectations and those differences may be material. No independent expert participates in the preparation of theseestimates. These estimates should not be regarded as a representation by us as to our results of operations during such periods as there can be no assurancethat any of these estimates will be realized. In light of the foregoing, we caution you not to place undue reliance on these estimates. These estimatesconstitute forward-looking statements.If we do not comply with laws regarding corruption and bribery, we may become subject to monetary or criminal penalties.The United States Foreign Corrupt Practices Act generally prohibits companies and their intermediaries from bribing foreign officials for the purpose ofobtaining or keeping business. Other countries have similar laws to which we are subject. We currently take precautions to comply with these laws. However,these precautions may not protect us against liability, particularly as a result10Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.of actions that may be taken in the future by agents and other intermediaries through whom we have exposure under these laws even though we may havelimited or no ability to control such persons. Our competitors include foreign entities that are not subject to the United States Foreign Corrupt Practices Actor laws of similar stringency, and hence we may be at a competitive disadvantage.Risks Related to Our IndustryConsolidation among companies in the telecommunications industry could further strengthen our competitors and adversely impact our business.The telecommunications industry is intensely competitive and continues to undergo significant consolidation. There are many reasons for consolidationin our industry, including the desire for companies to acquire customers or assets in regions where they currently have no or insufficient presence. Theconsolidation within the industry may cause customers to disconnect services to move them to their own networks, or consolidate buying with otherproviders. Additionally, consolidation in the industry could further strengthen our competitors, give them greater financial resources and geographic reach,and allow them to put additional pressure on prices for our services. Furthermore, consolidation can reduce the number of available suppliers available tocontract with, resulting in decreased flexibility and cost savings opportunity.The sector in which we operate is highly competitive, and we may not be able to compete effectively. We face significant competition from incumbent carriers, Internet service providers and facilities-based network operators. Relative to us, many of theseproviders have significantly greater financial, technological and personnel resources, more well-established brand names, superior marketing capabilities,greater network reach, larger customer bases, and more diverse strategic plans and service offerings. Most of these competitors are also our customers andsuppliers. Intense competition from these traditional and new communications companies has led to declining prices and margins for many communicationsservices, and we expect this trend to continue as competition intensifies in the future. Our competitors may also introduce new technologies or services thatcould make our services less attractive to potential customers.Certain of our services are subject to regulation that could change or otherwise impact us in an adverse manner.Communications services are subject to domestic and international regulation at the federal, state and local levels. These regulations affect our businessand our existing and potential competitors. Our electronic communications services and electronic communications networks in Europe and elsewhere aresubject to regulatory oversight by national communications regulators, such as the United Kingdom’s Office of Communications (“Ofcom”). In addition, inthe United States, both the Federal Communications Commission (“FCC”) and the state public utility commissions or similar regulatory authorities (the“State PUCs”) typically require us to file periodic reports, pay various regulatory fees and assessments, and to comply with their regulations. Suchcompliance can be costly and burdensome and may affect the way we conduct our business. Delays in receiving required regulatory approvals (includingapprovals relating to acquisitions or financing activities or for interconnection agreements with other carriers), the enactment of new and adverseinternational or domestic legislation or regulations (including those pertaining to broadband initiatives and net-neutrality), or the denial, modification ortermination by a regulator of any approval or authorization, could have a material adverse effect on our business. Local governments also exercise legalauthority that may have an adverse effect on our business because of our need to obtain rights-of-way for certain portions of our network. While localgovernments may not prohibit persons from providing telecommunications services nor treat telecommunications service providers in a discriminatorymanner, they can affect the timing and costs associated with our use of public rights-of-way. Further, the current regulatory landscape is subject to changethrough judicial review of current legislation and rulemaking by the FCC, Ofcom and other domestic, foreign, and international rulemaking bodies. Thesebodies regularly consider changes to their regulatory framework and fee obligations. Changes in current regulation may make it more difficult to obtain theapprovals necessary to operate our business, significantly increase the regulatory fees to which we are subject, or have other adverse effects on our futureoperations in the United States and Europe.Our growth and financial health are subject to a number of economic risks. A downturn in the world economy, especially the economies of North America and Europe, would negatively impact our growth. We would beparticularly impacted by a decline in the development of new applications and businesses that make use of the Internet, which depend on numerous factorsbeyond our control. Our revenue growth is predicated on growing use of the Internet that makes up for the declining prices of Internet service. An economicdownturn could impact the Internet business more significantly than other businesses that are less dependent on new applications and growth in the use ofthose applications because of the retrenchment by consumers and businesses that typically occur in an economic downturn.11Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Unfavorable general global economic conditions could negatively impact our operating results and financial condition.Unfavorable general global economic conditions could negatively affect our business. Although it is difficult to predict the impact of general economicconditions on our business, these conditions could adversely affect the affordability of, and customer demand for, our services, and could cause customers todelay or forgo purchases of our services. One or more of these circumstances could cause our revenue to decline. Also, our customers may not be able toobtain adequate access to credit, which could affect their ability to purchase our services or make timely payments to us. The current economic conditions,including federal fiscal and monetary policy actions, may lead to inflationary conditions in our cost base, particularly in our lease and personnel relatedexpenses. This could harm our margins and profitability if we are unable to increase prices or reduce costs sufficiently to offset the effects of inflation in ourcost base. For these reasons, among others, if challenging economic conditions persist or worsen, our operating results and financial condition could beadversely affected.Terrorist activity throughout the world, military action to counter terrorism and natural disasters could adversely impact our business.The continued threat of terrorist activity and other acts of war or hostility have had, and may continue to have, an adverse effect on business, financialand general economic conditions internationally. Effects from these events and any future terrorist activity, including cyber terrorism, may, in turn, increaseour costs due to the need to provide enhanced security, which would adversely affect our business and results of operations. These circumstances may alsodamage or destroy our Internet infrastructure and may adversely affect our ability to attract and retain customers, our ability to raise capital and the operationand maintenance of our network access points. We are also susceptible to other catastrophic events such as major natural disasters, extreme weather, fire orsimilar events that could affect our headquarters, other offices, our network, infrastructure or equipment, which could adversely affect our business.Risk Factors Related to Our IndebtednessOur substantial level of indebtedness could adversely affect our financial condition and prevent us from fulfilling our obligations under our debtagreements.We have substantial indebtedness. Our substantial debt may have important consequences. For instance, it could:•make it more difficult for us to satisfy our financial obligations, including those relating to our debt;•require us to dedicate a substantial portion of any cash flow from operations to the payment of interest and principal due under our debt, which willreduce funds available for other business purposes, including the growth of our operations, capital expenditures and acquisitions;•place us at a competitive disadvantage compared with some of our competitors that may have less debt and better access to capital resources; and•limit our ability to obtain additional financing required to fund working capital and capital expenditures, for strategic acquisitions and for othergeneral corporate purposes.Our ability to satisfy our obligations including our debt depends on our future operating performance and on economic, financial, competitive and otherfactors, many of which are beyond our control. Our business may not generate sufficient cash flow, and future financings may not be available to providesufficient net proceeds, to meet these obligations or to successfully execute our business strategy.Despite our leverage, we may still be able to incur more debt. This could further exacerbate the risks that we and our subsidiaries face.We and our subsidiaries may incur additional indebtedness, including additional secured indebtedness, in the future. The terms of our debt facilitiesrestrict, but do not completely prohibit, us from doing so. If new debt or other liabilities are added to our current debt levels, the related risks that we and oursubsidiaries now face could intensify.We may be subject to interest rate risk, and increasing interest rates may increase our interest expense.Borrowings under the credit agreement bear, and our future indebtedness may bear, interest at variable rates and expose us to interest rate risk. If interestrates increase, our debt service obligations on the variable rate indebtedness would increase even though the amount borrowed remained the same, and ournet income and cash available for servicing our indebtedness would decrease.12Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The agreements governing our debt obligations impose restrictions on our business and could adversely affect our ability to undertake certain corporateactions.The agreements governing our various debt obligations include covenants imposing significant restrictions on our business. These restrictions mayaffect our ability to operate our business and may limit our ability to take advantage of potential business opportunities as they arise. These covenants placerestrictions on our ability to, among other things:•incur additional debt;•create liens;•make certain investments;•consummate acquisitions;•enter into certain transactions with affiliates;•declare or pay dividends, redeem stock or make other distributions to stockholders; and•consolidate, merge or transfer or sell all or substantially all of our assets.Our ability to comply with these agreements may be affected by events beyond our control, including prevailing economic, financial and industryconditions. These covenants could have an adverse effect on our business by limiting our ability to take advantage of financing, merger and acquisition orother corporate opportunities. In addition, the credit agreement requires us to comply with specified financial ratios, including ratios regarding secured leverage. Our ability to complywith these ratios may be affected by events beyond our control. These restrictions limit our ability to plan for or react to market conditions, meet capitalneeds, or otherwise constrain our activities or business plans. They also may adversely affect our ability to finance our operations, enter into acquisitions orengage in other business activities that would be in our interest.A breach of any of the covenants contained in our credit agreement or any future agreements related to indebtedness or our inability to comply with thefinancial ratios could result in an event of default, which would allow the lenders to declare all borrowings outstanding to be due and payable or to terminatethe ability to borrow under the Revolver. If the amounts outstanding under the credit agreement or other future indebtedness were to be accelerated, wecannot assure that our assets would be sufficient to repay in full the money owed. In such a situation, we could be forced to file for bankruptcy or seek otherprotections from creditors.To service our indebtedness, we will require a significant amount of cash. However, our ability to generate cash depends on many factors, many of whichare beyond our control.Our ability to make payments on and to refinance our indebtedness and to fund planned capital expenditures will depend on our ability to generate cashin the future, which, in turn, is subject to general economic, financial, competitive, regulatory and other factors, many of which are beyond our control.Our business may not generate sufficient cash flow from operations and we may not have available to us future borrowings in an amount sufficient toenable us to pay our indebtedness or to fund our other liquidity needs. In these circumstances, we may need to refinance all or a portion of our indebtednesson or before maturity. We may not be able to refinance any of our indebtedness on commercially reasonable terms or at all. Without this financing, we couldbe forced to sell assets or secure additional financing to make up for any shortfall in our payment obligations under unfavorable circumstances. However, wemay not be able to secure additional financing on terms favorable to us or at all and, in addition, the terms of the indentures governing our notes limit ourability to sell assets and also restrict the use of proceeds from such a sale. We may not be able to sell assets quickly enough or for sufficient amounts to enableus to meet our obligations, including our obligations under our notes.If we are unable to meet our debt service obligations, we would be in default under the terms of our credit agreement, permitting acceleration of theamounts due under the credit agreement and eliminating our ability to draw on the Revolver. If the amounts outstanding under the credit facilities or futureindebtedness were to be accelerated, we could be forced to file for bankruptcy.Risks Related to Our Common Stock and the Securities MarketsBecause we do not currently intend to pay dividends on our common stock, stockholders will benefit from an investment in our common stock only if itappreciates in value.We do not currently anticipate paying any dividends on shares of our common stock. Any determination to pay dividends in the future will be made byour Board of Directors and will depend upon results of operations, financial conditions, contractual restrictions, restrictions imposed by applicable law andother factors our Board of Directors deems relevant. Accordingly, realization13Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.of a gain on stockholders’ investments will depend on the appreciation of the price of our common stock. There is no guarantee that our common stock willappreciate in value or even maintain the price at which stockholders purchased their shares.The concentration of our capital stock ownership may limit a stockholder’s ability to influence corporate matters, and could discourage a takeoverthat stockholders may consider favorable and make it more difficult for a stockholder to elect directors of its choosing.H. Brian Thompson, the Company’s Executive Chairman of the Board of Directors, and Universal Telecommunications, Inc., Mr. Thompson’s privateequity investment and advisory firm, owned 6,789,166 shares of our common stock at February 20, 2017. Based on the number of shares of our commonstock outstanding on February 20, 2017, Mr. Thompson and Universal Telecommunications, Inc. beneficially own approximately 17% of our common stock.In addition, as of February 20, 2017, our executive officers, directors and affiliated entities, excluding Mr. Thompson and Universal Telecommunications,Inc., together beneficially owned common stock, without taking into account their unexercised options, representing approximately 8% of our commonstock. As a result, these stockholders have the ability to exert significant control over matters that require approval by our stockholders, including theelection of directors and approval of significant corporate transactions. The interests of these stockholders might conflict with your interests as a holder of oursecurities, and it may cause us to pursue transactions that, in their judgment, could enhance their equity investments, even though such transactions mayinvolve significant risks to you as a security holder. The large concentration of ownership in a small group of stockholders might also have the effect ofdelaying or preventing a change of control that other stockholders may view as beneficial.We might require additional capital to support business growth, and this capital might not be available on favorable terms, or at all.Our operations or expansion efforts may require substantial additional financial, operational and managerial resources. While we believe we havesufficient liquidity as of December 31, 2016 to fund our working capital and other operating requirements, we may raise additional funds for acquisitions orto expand our operations. If we obtain additional funding in the future, we may seek debt financing or obtain additional equity capital. Additional capitalmay not be available to us, or may only be available on terms that adversely affect our existing stockholders, or that restrict our operations. For example, if weraise additional funds through issuances of equity or convertible debt securities, our existing stockholders could suffer dilution, and any new equitysecurities we issue could have rights, preferences and privileges superior to those of holders of our common stock.It may be difficult for you to resell shares of our common stock given the limited trading volume in our stock.Our common stock has been listed on the NYSE since November 2014, and prior to this listing our common stock was thinly traded on the NYSE MKTand OTC Markets. During 2016, on average, approximately 100,000 to 200,000 shares of our common stock traded each day on the NYSE. Therefore, inaddition to the concentrated ownership of our capital stock, limited daily trading volumes may further impair your ability to sell your shares when you wantto do so and could depress our stock price. As a result, you may find it difficult to obtain or dispose of our securities because smaller quantities of sharescould be bought and sold, transactions could be delayed, and security analyst and news coverage of the Company may be limited. These factors could resultin lower prices and larger spreads in the bid and ask prices for our shares.Disruptions in the financial markets could affect our ability to obtain debt or equity financing or to refinance our existing indebtedness on reasonableterms or at all.Disruptions in the financial markets could impact our ability to obtain debt or equity financing, or lines of credit, in the future as well as impact ourability to refinance our existing indebtedness on reasonable terms or at all, which could affect our strategic operations and our financial performance andforce modifications to our operations.ITEM 1B. UNRESOLVED STAFF COMMENTSNone.ITEM 2. PROPERTIESAs of December 31, 2016, we did not own any real estate and leased all of our facilities, which includes office space, data centers, colocation facilitiesand PoPs. Our corporate headquarters facility consists of approximately 19,000 square feet, located in McLean, Virginia. We also lease corporate office spacein the following cities around the world:14Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.•North America: Phoenix, AZChicago, ILTrooper, PASeattle, WACosta Mesa, CANew York, NYAustin, TX Pleasanton, CALemont Furnace, PAFrisco, TX •Europe:London, EnglandFrankfurt, GermanyCagliari, ItalyBelfast, Northern Ireland•Asia:Hong Kong, ChinaWe believe our properties, taken as a whole, are in good operating condition and are adequate for our business needs.ITEM 3. LEGAL PROCEEDINGS From time to time, we are party to legal proceedings arising in the normal course of business. We do not believe that we are party to any current orpending legal action that could reasonably be expected to have a material adverse effect on our financial condition or results of operations. ITEM 4. MINE SAFETY DISCLOSURESNot applicable.15Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.PART IIITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITYSECURITIESMarket for Equity Securities Our common stock trades on the NYSE under the symbol "GTT" and has traded on the NYSE since November 28, 2014. Prior to November 28, 2014, ourcommon stock traded on the NYSE MKT.The following table sets forth, for the calendar quarters indicated, the quarterly high and low sales information of our common stock as reported on theNYSE since November 28, 2014 and on the NYSE MKT from January 1, 2014 to November 28, 2014. As of March 8, 2017, there were approximately 185holders of record of our common stock, par value $.0001 per share. Common Stock High Low2015 First Quarter$19.34 $11.32Second Quarter$24.65 $17.62Third Quarter$26.64 $14.00Fourth Quarter$25.13 $15.872016 First Quarter$18.70 $12.31Second Quarter$18.88 $14.96Third Quarter$24.20 $17.55Fourth Quarter$29.75 $20.80 Dividends We have not paid any dividends on our common stock to date, and do not anticipate paying any dividends in the foreseeable future. Moreover,restrictive covenants existing from the credit agreement that we have entered into preclude us from paying dividends until certain conditions are met.Performance GraphThe following performance graph compares the relative changes in the cumulative total return of our common stock for the period from December 31,2011 to December 31, 2016, against the cumulative total return for the same period of (1) The Standard & Poor's 500 (S&P 500) Index, (2) The Standard &Poor's (S&P) Telecom Select Industry Index, and (3) NASDAQ Telecommunication Index. The comparison below assumes $100 was invested on December31, 2011, in our common stock, the S&P 500 Index, the S&P Telecom Select Industry Index, and NASDAQ Telecommunication Index. 16Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN* * $100 invested on 12/31/11 in stock or index. Fiscal year ending December 31.Copyright © 2016 S&P, a division of The McGraw-Hill Companies Inc. All rights reserved. Dec-11 Dec-12 Dec-13 Dec-14 Dec-15 Dec-16GTT Communications, Inc.$100.00 $237.29 $618.64 $1,121.19 $1,445.76 $2,436.44S&P 500 ® Index100.00 113.41 146.98 163.72 162.53 178.02S&P Telecom Select Industry Index100.00 110.91 135.36 140.02 135.78 168.28NASDAQ Telecommunications Index100.00 102.00 126.50 137.77 127.44 146.39The stock price performance included in this graph is not necessarily indicative of future stock price performance.Equity Compensation Plan InformationThe information required by this Item 5 regarding Securities Authorized for Issuance Under Equity Compensation Plans is incorporated in this report byreference to the information set forth under the capital "Equity Plan Information" in our 2017 Proxy Statement.ITEM 6. SELECTED FINANCIAL DATAThe annual financial information set forth below has been summarized from our audited consolidated financial statements for GTT Communications, Inc.and its wholly owned subsidiaries, for the periods and as of the dates indicated. The information should be read in connection with, and is qualified in itsentirety by reference to, Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations", the consolidated financialstatements and notes included elsewhere in this report and in our SEC filings. These historical results are not necessarily indicative of the results to beexpected in the future.17Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Years Ended December 31, 2016 2015 2014 2013 2012 (Amounts In thousands, except for share and per share data)Consolidated Statement of Operations Data: Telecommunications service revenue$521,688 $369,250 $207,343 $157,368 $107,877Operating expenses: Cost of telecommunications services274,012 204,458 128,086 102,815 76,000Selling, general and administrative expense143,193 101,712 45,613 31,675 18,957Severance, restructuring and other exit costs870 12,670 9,425 7,677 701Depreciation and amortization62,788 46,708 24,921 17,157 7,296Total operating expenses480,863 365,548 208,045 159,324 102,954Operating income (loss)40,825 3,702 (702) (1,956) 4,923Interest expense, net(29,428) (13,942) (8,454) (8,408) (4,686)Loss on debt extinguishment(1,632) (3,420) (3,104) (706) —Other expense, net(577) (1,167) (8,636) (11,724) (1,054)Income (loss) before income taxes9,188 (14,827) (20,896) (22,794) (817)Income tax expense (benefit)3,928 (34,131) 2,083 (2,005) 746Net income (loss)$5,260 $19,304 $(22,979) $(20,789) $(1,563)Net income (loss) per common share - basic$0.14 $0.55 $(0.85) $(0.95) $(0.08)Net income (loss) per common share - diluted$0.14 $0.54 $(0.85) $(0.95) $(0.08)Weighted average common shares - basic37,055,663 34,973,284 27,011,381 21,985,241 18,960,347Weighted average common shares - diluted37,568,915 35,801,395 27,011,381 21,985,241 18,960,347 Consolidated Balance Sheet Data: Cash and cash equivalents$29,748 $14,630 $49,256 $5,785 $4,726Restricted cash and cash equivalents304,266 — — — —Property and equipment, net43,369 38,823 25,184 20,450 5,494Total assets953,261 596,454 266,478 171,756 97,756Term loan429,508 386,243 120,826 64,750 24,500Mezzanine notes— — — 27,710 15,4817.875% Senior Note300,000 — — — —Stockholders' equity127,759 110,486 77,566 9,510 17,03918Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS This Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") contains certain forward-looking statementswithin the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. Historical results may not indicate future performance. Ourforward-looking statements reflect our current views about future events, are based on assumptions, and are subject to known and unknown risks anduncertainties that could cause actual results to differ materially from those contemplated by these statements. Factors that may cause differences betweenactual results and those contemplated by forward-looking statements include, but are not limited to, those discussed in "Risk Factors" in Part I, Item 1A, ofthis Annual Report. We undertake no obligation to publicly update or revise any forward-looking statements, including any changes that might result fromany facts, events, or circumstances after the date hereof that may bear upon forward-looking statements. Furthermore, we cannot guarantee future results,events, levels of activity, performance, or achievements.This MD&A is intended to assist in understanding and assessing the trends and significant changes in our results of operations and financialcondition. As used in this MD&A, the words, "we", "our", and "us" refer to GTT Communications and its consolidated subsidiaries. This MD&A should beread in conjunction with our consolidated financial statements and related notes included elsewhere in this Annual Report.Company OverviewGTT Communications, Inc. is a provider of cloud networking services to multinational clients. We offer a broad portfolio of global services including:WAN services; Internet services; managed network and security services; and voice and unified communication services.Our global Tier 1 IP network delivers connectivity for our clients around the world. We provide services to leading multinational enterprises, carriers andgovernment customers in over 100 countries. We differentiate ourselves from our competition by delivering service to our clients with simplicity, speed andagility.We deliver four primary service offerings to our customers:•WAN Services. We provide Layer 2 (Ethernet) and Layer 3 (MPLS) WAN solutions to meet the growing needs of multinational enterprises, carriers,service providers and content delivery networks regardless of location. We design and implement custom private, public and hybrid cloud networksolutions for our customers, offering bandwidth speeds from 10 Mbps to 100 Gbps per port with burstable and aggregate bandwidth capabilities. Allservices are available on a protected basis with the ability to specify pre-configured alternate routes to minimize the impact of any networkdisruption. •Internet Services. We offer domestic and multinational customers scalable, high-bandwidth global Internet connectivity and IP transit withguaranteed availability and packet delivery. Our Internet services offer flexible connectivity with multiple port interfaces including Fast Ethernet,Gigabit Ethernet, 10 Gigabit Ethernet and 100 Gigabit Ethernet. We also offer broadband and wireless access services. We support a dual stack ofIPv4 and IPv6 protocols, enabling the delivery of seamless IPv6 services alongside existing IPv4 services.•Managed Services. We offer fully managed network services, including managed equipment, managed security services and managed remote access,enabling customers to focus on their core business. These end-to-end services cover the design, procurement, implementation, monitoring andmaintenance of a customer’s network.•Voice and Unified Communication Services. Our SIP Trunking service is an enterprise-built unified communications offering that integrates voice,video and chat onto a single IP connection, driving efficiency and productivity organization-wide. Our Enterprise PBX service allows clients toeliminate traditional voice infrastructure with communication services delivered through the cloud. The offering includes fully hosted andhybrid models for maximum flexibility.Our customer contracts are generally for initial terms of three years, with some contracts at one year, and others at five years or more. Following the initialterms, these agreements typically provide for automatic renewal for specified periods ranging from one month to one year. Our prices are fixed for theduration of the contract, and we typically bill monthly in advance for such services. If a customer terminates its agreement, the terms of the Company’scustomer contracts typically require full recovery of any amounts due for the remainder of the term or, at a minimum, our liability to any underlyingsuppliers.19Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Our revenue is composed of three primary categories that include monthly recurring revenue (or "MRR"), non-recurring revenue and usage revenue.MRR relates to contracted ongoing service that is generally fixed in price and paid by the customer on a monthly basis for the contracted term. For the yearended December 31, 2016, MRR was approximately 91% of our revenue. Non-recurring revenue primarily includes the amortization of previously collectedinstallation and equipment charges to customers, and one-time termination charges for customers who cancel their services prior to the contract terminationdate. Usage revenue represents variable revenue based on whether a customer exceeds its committed usage threshold as specified in the contract.Our network supplier contracts do not have any market related net settlement provisions. We have not entered into, and do not plan to enter into, anysupplier contracts that involve financial or derivative instruments. The supplier contracts are entered into solely for the direct purchase oftelecommunications capacity, which is resold by us in the normal course of business. Other than cost of telecommunications services provided, our most significant operating expenses are employment costs. As of December 31, 2016, wehad 662 full-time equivalent employees. For the year ended December 31, 2016, the employee cash compensation and benefits represented approximately16% of revenue.Factors Affecting Our Results of OperationsBusiness AcquisitionsSince our formation, we have consummated a number of transactions accounted for as business combinations which were executed as part of our strategyof expanding through acquisitions. These acquisitions, which are in addition to our periodic purchases of customer contracts, have allowed us to increase thescale at which we operate which in turn affords us the ability to increase our operating leverage, extend our network, and broaden our customer base.Theaccompanying consolidated financial statements include the operations of the acquired entities from their respective acquisition dates. The acquisitionsnoted below are collectively defined as "Acquisitions" for purposes of explaining our results of operations.TelnesIn February 2016, we completed the acquisition of Telnes Broadband ("Telnes"). We paid $15.5 million in cash and issued 178,202 unregistered sharesof our common stock valued at $2.0 million.One SourceIn October 2015, we completed the acquisition of One Source Networks Inc. ("One Source"). We paid $169.3 million in cash and issued 185,946unregistered shares of our common stock valued at $2.3 million. We also issued 289,055 unregistered shares of our common stock to certain One Sourceemployees as compensation for continuous employment valued at $3.6 million.MegaPathIn April 2015, we acquired MegaPath Corporation ("MegaPath"). We paid $141.4 million in cash (exclusive of the assumption of $3.4 million in capitalleases), and issued 610,843 unregistered shares of our common stock valued at $7.5 million. UNSiIn October 2014, we acquired United Networks Services, Inc. ("UNSi"). We paid $32.5 million in cash and issued 231,539 of unregistered shares of ourcommon stock valued at $2.9 million. Asset PurchasesPeriodically we acquire customer contracts that we account for as an asset purchase and record a corresponding intangible asset that is amortized over itsassumed useful life. During 2016 we acquired two portfolios of customer contracts for an aggregate purchase price of $41.3 million, of which $20 million waspaid in 2016 at the respective closing dates. The remaining $21.3 million will be paid in 2017. We did not have any material asset purchases in 2015 or2014, respectively.20Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.IndebtednessThe following summarizes our long-term debt at December 31, 2016 and 2015 (amounts in thousands): 2016 2015 Term loan$425,775 $400,0007.875% Senior Note300,000 —Revolving line of credit facility20,000 5,000Total debt obligations745,775 405,000Unamortized debt issuance costs(9,310) (10,938)Unamortized original issuance discount(6,957) (7,819)Carrying value of debt729,508 386,243Less current portion(4,300) (4,000) $725,208 $382,243October 2015 Credit AgreementIn October 2015, we entered into a credit agreement (the “October 2015 Credit Agreement”) that provided for a $400.0 million term loan facility and a$50.0 million revolving line of credit facility (which includes a $15.0 million letter of credit facility and a $10.0 million swingline facility). The term loanfacility was issued at a discount of $8.0 million. The maturity date of the term loan facility is October 22, 2022, and the maturity date of the revolving line ofcredit is October 22, 2020.On May 3, 2016, we entered into an incremental term loan agreement that increased outstanding term loans by $30.0 million, the proceeds of which wereused to repay the then outstanding revolving loans.On June 28, 2016, we entered into Amendment No. 1 (the "Repricing Amendment") to the October 2015 Credit Agreement. The Repricing Amendment,among other things, reduced the applicable rate for term loans to LIBOR plus 4.75% (subject to a LIBOR floor of 1.00%) and reduced the applicable rate forrevolving loans to LIBOR plus 4.25% (with no LIBOR floor).As of December 31, 2016, we had drawn $20.0 million under the revolving line of credit and had $29.5 million of available borrowing capacity.Approximately $0.5 million of the revolving line of credit was utilized for outstanding letters of credit relating to our real estate lease obligations.Our obligations under the October 2015 Credit Agreement are guaranteed by certain of our subsidiaries and secured by substantially all of our tangibleand intangible assets. We were in compliance with all financial covenants under the October 2015 Credit Agreement as of December 31, 2016.The effective interest rate on outstanding debt at December 31, 2016 and 2015 was 5.76% and 6.24% respectively.7.875% Senior Unsecured NotesOn December 22, 2016, in connection with the pending acquisitions of Hibernia Networks, we completed a private offering of $300 million aggregateprincipal amount of 7.875% senior unsecured notes due in 2024 (the "Notes"). The proceeds of the private offering were deposited into escrow, where thefunds remained until all the escrow release conditions were satisfied, most notably the closing of the acquisition of Hibernia Networks on January 9, 2017.Had the acquisition agreement been terminated, the funds in escrow would have been released and returned to the investors of the Notes, including accruedand unpaid interest up to the date of release. We have recognized the proceeds from the private offering as restricted cash and cash equivalents in ourconsolidated financial statements. In connection with the offering, we incurred debt issuance costs of $9.7 million of which $0.5 million was incurred in 2016and the remainder was incurred in 2017. The deferred costs associated with the Notes will begin amortizing in the first quarter of 2017.21Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Results of Operations of the Company Year Ended December 31, 2016 Compared to Years Ended December 31, 2015 and 2014 Overview. The information presented in the tables below is composed of the consolidated financial information for the years ended December 31, 2016, 2015and 2014 (amounts in thousands): Year Ended December 31, Year-over-Year 2016 2015 2014 2016 to 2015 2015 to 2014 Revenue: Telecommunications services$521,688 $369,250 $207,343 41.3 % 78.1 % Operating expenses: Cost of telecommunications services274,012 204,458 128,086 34.0 % 59.6 %Selling, general and administrative expenses143,193 101,712 45,613 40.8 % 123.0 %Severance, restructuring and other exit costs870 12,670 9,425 (93.1)% 34.4 %Depreciation and amortization62,788 46,708 24,921 34.4 % 87.4 % Total operating expenses480,863 365,548 208,045 31.5 % 75.7 % Operating income (loss)40,825 3,702 (702) 1,002.8 % 627.4 % Other expense: Interest expense, net(29,428) (13,942) (8,454) 111.1 % 64.9 %Loss on debt extinguishment(1,632) (3,420) (3,104) (52.3)% 10.2 %Other expense, net(577) (1,167) (8,636) (50.6)% (86.5)% Total other expense(31,637) (18,529) (20,194) 70.7 % (8.2)% Income (loss) before income taxes9,188 (14,827) (20,896) 162.0 % (29.0)% Income tax expense (benefit)3,928 (34,131) 2,083 * * Net income (loss)$5,260 $19,304 $(22,979) (72.8)% 184.0 % * Not meaningfulThe following table supplements the information presented above for selling, general and administrative expenses for the years ended December 31,2016, 2015, and 2014 (amounts in thousands): Year Ended December 31, 2016 2015 2014Cash compensation$83,096 $59,707 $29,563Non-cash compensation15,775 7,876 2,418Transition and integration expense4,780 6,085 —Other SG&A(1)39,542 28,044 13,632Total$143,193 $101,712 $45,613(1) Includes professional fees, marketing costs, facilities and other general support costs.22Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Year Ended December 31, 2016 Compared to Year Ended December 31, 2015RevenueOur revenue increased by $152.4 million, or 41.3%, from $369.3 million for the year ended December 31, 2015 to $521.7 million for the year endedDecember 31, 2016. The increase was primarily due to the Acquisitions, as well as organic growth and the purchase of certain customer contracts.On a constant currency basis using the average exchange rates in effect during the year ended December 31, 2015, revenue would have been higher by$2.8 million for the year ended December 31, 2016. Cost of Telecommunications Services ProvidedCost of telecommunications services provided increased by $69.6 million, or 34.0%, from $204.5 million for the year ended December 31, 2015 to$274.0 million for the year ended December 31, 2016. Consistent with our increase in revenue, the increase in cost of telecommunications services providedwas principally driven by the Acquisitions, as well as organic growth and the purchase of certain customer contracts.On a constant currency basis using the average exchange rates in effect during the year ended December 31, 2015, cost of telecommunications servicesprovided would have been higher by $1.0 million for the year ended December 31, 2016.Operating ExpensesSelling, General and Administrative Expenses. SG&A expenses increased by $41.5 million, or 40.8%, from $101.7 million for the year ended December31, 2015 to $143.2 million for the year ended December 31, 2016. Cash compensation expense increased $23.4 million or 39.2% from $59.7 million for theyear ended December 31, 2015 to $83.1 million for the year ended December 31, 2016, primarily due to the Acquisitions.Non-cash compensation expense increased by $7.9 million, or 100.3%, from $7.9 million for the year ended December 31, 2015 to $15.8 million for theyear ended December 31, 2016 driven by (i) the recognition of share-based compensation for performance awards where the performance criteria have beenmet, (ii) certain shares issued to former employees of One Source which were accounted for as compensation, and (iii) an overall increase in quantity ofemployee equity awards. Transaction and integration costs decreased by $1.3 million, or 21.4% from $6.1 million for the year ended December 31, 2015 to$4.8 million for the year ended December 31, 2016. Other SG&A expense increased $11.5 million, or 41.0%, from $28.0 million for the year ended December31, 2015 to $39.5 million for the year ended December 31, 2016, primarily as a result of the Acquisitions.Severance, Restructuring and Other Exit Costs. Restructuring costs decreased by $11.8 million, or 93.1%, from $12.7 million for the year endedDecember 31, 2015 to $0.9 million for year ended December 31, 2016. The decrease was due to the fact that we closed two large acquisitions in 2015 (OneSource and MegaPath), compared to one small acquisition in 2016 (Telnes).Depreciation and Amortization. Amortization of intangible assets increased $14.7 million, or 56.5%, from $26.0 million for the year ended December 31,2015 to $40.7 million for the year ended December 31, 2016 due to an increase in definite-lived intangible assets from the Acquisitions and the purchase ofcertain customer contracts. Depreciation expense increased by $1.4 million, or 6.8%, from $20.7 million for the year ended December 31, 2015 to $22.1million for the year ended December 31, 2016, primarily due to the addition of property and equipment from the Acquisitions.Other Expense. Other expense increased by $13.1 million, or 70.7% from $18.5 million for the year ended December 31, 2015 to $31.6 million for theyear ended December 31, 2016. This is primarily attributed to higher interest expense related to increased debt levels to support acquisition activities. On a constant currency basis using the average exchange rates in effect during the year ended December 31, 2015, operating expenses would have beenhigher by $0.6 million for the year ended December 31, 2016. Selling, general and administrative expenses are the only operating expenses that would havebeen impacted by the change in exchange rates.Year Ended December 31, 2015 Compared to Year Ended December 31, 2014RevenueOur revenue increased by $161.9 million, or 78.1%, from $207.3 million for the year ended December 31, 2014 to $369.3 million for the year endedDecember 31, 2015. The increase was primarily due to the Acquisitions completed in 2015.23Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.On a constant currency basis using the average exchange rates in effect during the year ended December 31, 2014, revenue would have been higher by$11.8 million for the year ended December 31, 2015. Cost of Telecommunications Services ProvidedCost of telecommunications services provided increased by $76.4 million, or 59.6%, from $128.1 million for the year ended December 31, 2014 to$204.5 million for the year ended December 31, 2015. Consistent with our increase in revenue, the increase in cost of telecommunications services providedwas principally driven by the Acquisitions.On a constant currency basis using the average exchange rates in effect during the year ended December 31, 2014, cost of telecommunications servicesprovided would have been higher by $4.4 million for the year ended December 31, 2015. Operating ExpensesSelling, General and Administrative Expenses. SG&A expenses increased by $56.1 million, or 123.0% from $45.6 million for the year ended December31, 2014 to $101.7 million for the year ended December 31, 2015. Cash compensation expense increased by $30.1 million, or 102.0%, from $29.6 million forthe year ended December 31, 2014 to $59.7 million for the year ended December 31, 2015, due primarily to the Acquisitions. Non-cash compensationexpense increased by $5.5 million, or 225.7%, from $2.4 million for the year ended December 31, 2014 to $7.9 million for the year ended December 31,2015, driven by the recognition of share-based compensation for performance awards where the performance criteria have been met and an overall increase inthe quantity of employee equity awards. Other SG&A expense increased $14.4 million, or 105.7%, from $13.6 million for the year ended December 31, 2014to $28.0 million for the year ended December 31, 2015. Transaction and integration was $6.1 million for the year ended December 31, 2015. There were notransition and integration costs incurred in 2014.Severance, Restructuring and Other Exit Costs. Restructuring costs increased by $3.2 million, or 34.4% from $9.4 million for the year ended December31, 2014 to $12.7 million for year ended December 31, 2015. The $12.7 million in 2015 is comprised of exit costs associated with the acquisition of OneSource and MegaPath, and the $9.4 million in 2014 is comprised of $6.1 million of exit costs associated with the acquisition of UNSi and $3.3 million inlitigation settlement.Depreciation and Amortization. Amortization of intangible assets increased $12.2 million, or 88.4%, from $13.8 million for the year ended December 31,2014 to $26.0 million for the year ended December 31, 2015, due to the addition of definite-lived intangible assets from the Acquisitions. Similarly,depreciation expense increased $9.6 million, or 86.5%, from $11.1 million for the year ended December 31, 2014 to $20.7 million for the year endedDecember 31, 2015, primarily due to the addition of property and equipment from the Acquisitions.Other Expense. Other expense decreased by $1.7 million, or 8.2%, from $20.2 million for the year ended December 31, 2014 to $18.5 million for the yearended December 31, 2015. For the year ended December 31, 2014, we recorded $6.9 million of expense associated with the change in fair value of the warrantliability that was extinguished in the third quarter of 2014. This was offset by increased interest expense of $5.5 million for the year ended December 31,2015, attributed to increased debt for the acquisitions during 2015. Using constant currency, when compared to 2014, operating expense for year ended December 31, 2015, would have been $1.6 million higher thanreported. Selling, general and administrative expenses are the only operating expenses that would have been impacted by the change in exchange rates.Non-GAAP Financial MeasuresIn addition to financial measures prepared in accordance with accounting principles generally accepted in the United States (“GAAP”), from time to timewe may use or publicly disclose certain "non-GAAP financial measures" in the course of our financial presentations, earnings releases, earnings conferencecalls, and otherwise. For these purposes, the SEC defines a "non-GAAP financial measure" as a numerical measure of historical or future financialperformance, financial positions, or cash flows that (i) exclude amounts, or is subject to adjustments that effectively exclude amounts, included in the mostdirectly comparable measure calculated and presented in accordance with GAAP in financial statements, and (ii) include amounts, or is subject to adjustmentsthat effectively include amounts, that are excluded from the most directly comparable measure so calculated and presented.Non-GAAP financial measures are provided as additional information to investors to provide an alternative method for assessing our financial conditionand operating results. We believe that these non-GAAP measures, when taken together with our GAAP financial measures, allow us and our investors to betterevaluate our performance and profitability. These measures are not in accordance with, or a substitute for, GAAP, and may be different from or inconsistentwith non-GAAP financial24Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.measures used by other companies. These measures should be used in addition to and in conjunction with results presented in accordance with GAAP, andshould not be relied upon to the exclusion of GAAP financial measures.Pursuant to the requirements of Regulation G, whenever we refer to a non-GAAP financial measure, we will also generally present the most directlycomparable financial measure calculated and presented in accordance with GAAP, along with a reconciliation of the differences between the non-GAAPfinancial measure we reference with such comparable GAAP financial measure.Adjusted Earnings before Interest, Taxes, Depreciation and Amortization (“Adjusted EBITDA”)Adjusted EBITDA is defined as net income/(loss) before interest, income taxes, depreciation and amortization ("EBITDA") adjusted to excludeseverance, restructuring and other exit costs, acquisition-related transaction and integration costs, losses on extinguishment of debt, share-basedcompensation, and from time to time, other non-cash or non-recurring items.We use Adjusted EBITDA to evaluate operating performance, and this financial measure is among the primary measures we use for planning andforecasting future periods. We further believe that the presentation of Adjusted EBITDA is relevant and useful for investors because it allows investors toview results in a manner similar to the method used by management and makes it easier to compare our results with the results of other companies that havedifferent financing and capital structures. In addition, we have debt covenants that are based on a leverage ratio that utilizes a modified EBITDA calculation,as defined in our credit agreement. The modified EBITDA calculation is similar to our definition of Adjusted EBITDA; however it includes the pro formaAdjusted EBITDA of and expected cost synergies from the companies acquired by us during the applicable reporting period. Finally, Adjusted EBITDAresults, along with other quantitative and qualitative information, are utilized by management and our compensation committee for purposes of determiningbonus payouts to our employees.Adjusted EBITDA Less Capital ExpendituresAdjusted EBITDA less purchases of property and equipment, which we also refer to as capital expenditures or capex, is a performance measure that weuse to evaluate the appropriate level of capital expenditures needed to support our expected revenue, and to provide a comparable view of our performancerelative to other telecommunications companies who may utilize different strategies for providing access to fiber-based services and related infrastructure. Weuse a "capex light" strategy, which means we purchase fiber-based services and related infrastructure from other providers on an as-needed basis, pursuant toour customers' requirements. Many other telecommunications companies spend significant amounts of capital expenditures to construct their own fibernetworks and data centers, and attempt to purchase as little as possible from other providers. As a result of our strategy, we typically have lower AdjustedEBITDA margins compared to other providers, but also spend much less on capital expenditures relative to our revenue. We believe it is important to takeboth of these factors into account when evaluating our performance.The following is a reconciliation of Adjusted EBITDA and Adjusted EBITDA less capital expenditures from Net Income (Loss):25Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Year Ended December 31,(Amounts in thousands)2016 2015 2014 (Unaudited) Adjusted EBITDA Net income (loss)$5,260 $19,304 $(22,979)Provision for (benefit from) income taxes3,928 (34,131) 2,083Interest and other expense, net30,005 15,109 17,090Loss on debt extinguishment1,632 3,420 3,104Depreciation and amortization62,788 46,708 24,921Severance, restructuring and other exit costs870 12,670 9,425Transaction and integration costs4,780 6,085 —Share-based compensation15,775 7,876 2,418Adjusted EBITDA125,038 77,041 36,062 Purchases of property and equipment(24,189) (14,070) (5,819)Adjusted EBITDA less capital expenditures$100,849 $62,971 $30,243Liquidity and Capital ResourcesOur primary sources of liquidity have been cash provided by operations, equity offerings and debt financing. Our principal uses of cash have been foracquisitions, working capital, capital expenditures, and debt service requirements. We anticipate that our principal uses of cash in the future will be foracquisitions, capital expenditures, working capital, and debt service.Management monitors cash flow and liquidity requirements on a regular basis, including an analysis of the anticipated working capital requirements forthe next 12 months. This analysis assumes our ability to manage expenses, capital expenditures, indebtedness and the anticipated growth of revenue. If ouroperating performance differs significantly from our forecasts, we may be required to reduce our operating expenses and curtail capital spending, and we maynot remain in compliance with our debt covenants. In addition, if we are unable to fully fund our cash requirements through operations and current cash onhand, we may need to obtain additional financing through a combination of equity and debt financings and/or renegotiation of terms of our existing debt. Ifany such activities become necessary, there can be no assurance that we would be successful in obtaining additional financing or modifying our existing debtterms.As of December 31, 2016, we had approximately $29.7 million in unrestricted cash and cash equivalents, and our current assets were $23.0 milliongreater than current liabilities. Our current liabilities include $24.4 million of earn-outs and holdback obligations payable in 2017; and $3.2 million ofaccrued severance and exit costs with a substantial portion of this obligation expected to be paid in 2017. We believe that cash currently on hand, expectedcash flows from future operations and existing borrowing capacity are sufficient to fund operations for at least the next 12 months.Our capital expenditures increased by $10.1 million, or 71.9%, from $14.1 million for the year ended December 31, 2015 to $24.2 million for the yearended December 31, 2016. The increase in capital expenditures was due to our growth, but remained less than 5% of revenue, consistent with our 'capex light'strategy. We anticipate that we will incur capital expenditures in the range of 6% to 7% of revenue in 2017, taking into consideration the recent acquisitionof Hibernia Networks, which closed in January 2017. We continue to expect that our capital expenditures will be primarily success-based, i.e., in support ofspecific revenue opportunities.CashflowsWe believe that our cash flows from operating activities, in addition to cash on-hand, will be sufficient to fund our operating activities and capitalexpenditures for the foreseeable future, and in any event for at least the next 12 to 18 months. However, no assurance can be given that this will be the case.26Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The following table summarizes the components of our cash flows for the years ended December 31, 2016, 2015 and 2014.Consolidated Statements of Cash Flows DataYear Ended December 31,(amounts in thousands)2016 2015 2014Net cash provided by (used in) operating activities$60,543 $24,651 $(6,475)Net cash used in investing activities(362,601) (314,772) (43,513)Net cash provided by financing activities318,611 253,531 88,231Cash Provided (or Used) by Operating Activities Our largest source of cash provided by operating activities is monthly recurring revenue from our customers. Our primary uses of cash are payments tonetwork suppliers, compensation related costs and third-party vendors such as agents, contractors, and professional service providers.Net cash flows from operating activities increased by $35.9 million, or 145.6%, from $24.7 million for the year ended December 31, 2015 to $60.5million for the year ended December 31, 2016, due primarily to the Acquisitions, as well as organic growth and the purchase of certain customer contracts.Net cash flows from operating activities increased by $31.1 million, or 480.7%, from a use of operating cash of $6.5 million for the year ended December 31,2014 to a source of operating cash of $24.7 million for the year ended December 31, 2015, also due primarily to the Acquisitions, as well as organic growthand the purchase of certain customer contracts.Cash provided by operating activities during the year ended December 31, 2016 included $4.4 million cash paid for severance and exit costs, $4.8million cash paid for transaction and integration costs and a working capital use of $29.5 million. The working capital use was driven by an effort to improvethe timeliness of payments to our key vendors, and slower payment timing by some of our larger customers. We have several initiatives underway to improvepayment timing from our customers, which we expect to take effect in 2017.Cash provided by operating activities during the year ended December 31, 2015 includes $8.0 million cash paid for severance and exit costs, $6.1million cash paid for transaction and integration costs, and a working capital use of $24.2 million.Cash used by operating activities during the year ended December 31, 2014 includes $4.8 million cash paid for severance and exit costs, and a workingcapital use of $23.8 million.Cash Used in Investing ActivitiesOur primary uses of cash include acquisitions, purchase of customer contracts and capital expenditures.Net cash flows from investing activities increased by $47.8 million, or 15.2% from $314.8 million for the year ended December 31, 2015 to $362.6million for the year ended December 31, 2016. Net cash flows from investing activities increased by $271.3 million, or 623.4%, from $43.5 million for theyear ended December 31, 2014 to $314.8 million for the year ended December 31, 2015.Cash used for the year ended December 31, 2016 primarily consisted of $304.3 million for restricted cash that was deposited into escrow in anticipationof the Hibernia Networks acquisition that closed on January 9, 2017 (see Note 15 - Subsequent Events for details). We also completed the Telnes acquisitionand certain customer contract purchases during 2016 for which we paid a total of approximately $34.1 million, in addition to capital expenditures ofapproximately $24.2 million.Cash used in investing activities for the year ended December 31, 2015 primarily consisted of $300.7 million of cash used for the acquisitions of OneSource and MegaPath, in addition to capital expenditures of approximately $14.1 million.Cash used in investing activities for the year ended December 31, 2014, primarily consisted of $37.5 million of cash used for the acquisition of UNSi andcapital expenditures of $5.8 million.Cash Provided by Financing ActivitiesOur primary source of cash for financing activities is debt financing proceeds. Our primary use of cash for financing activities is the refinancing of ourdebt and repayment of principal pursuant to the debt agreements.27Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Net cash flows from financing activities increased by $65.1 million, or 25.7% from $253.5 million for the year ended December 31, 2015 to $318.6million for the year ended December 31, 2016. Net cash flows from financing activities increased by $165.3 million, or 187.3%, from $88.2 million for theyear ended December 31, 2014 to $253.5 million for the year ended December 31, 2015.Net cash provided by financing activities for the year ended December 31, 2016, was $318.6 million consisting primarily of $300.0 million in proceedsfrom the issuance of senior notes to fund the Hibernia Networks acquisition that closed on January 9, 2017 (see Note 15 - Subsequent Events for details).Net cash provided by financing activities for the year ended December 31, 2015, was $253.5 million, which primarily consisted of net proceeds from theOctober 2015 Credit Agreement used to fund the acquisition of One Source.Net cash provided by financing activities for the year ended December 31, 2014, was $88.2 million, which primarily consisted of $72.7 million from newequity raised and net debt proceeds of $29.4 million from the August 2014 Credit Agreement. For additional discussion of indebtedness, refer to Note 6 -Debt of the consolidated financial statements.Other cash flowsDuring the years ended December 31, 2016, 2015 and 2014, we made cash payments for interest totaling $26.3 million, $13.1 million and $8.0 million,respectively. The increase in interest payments is a result of the incremental debt associated with the Acquisitions, as discussed further in Note 6 - Debt of theconsolidated financial statements.Contractual Obligations and Commitments As of December 31, 2016, we had contractual payment obligations of approximately $955.2 million. The following table summarizes our significant contractual obligations as of December 31, 2016 (amounts in thousands): Total Less than 1 year 1-3 years 3-5 years More than 5 yearsTerm loan$425,775 $4,300 $8,600 $8,600 $404,2757.875% Senior Note300,000 — — — 300,000Revolving line of credit20,000 — — 20,000 —Operating leases10,181 3,332 4,649 1,727 473Capital leases1,135 1,015 120 — —Network supplier agreements (1)189,747 103,770 80,050 4,375 1,552Other (2)8,350 7,618 732 — — $955,188 $120,035 $94,151 $34,702 $706,300(1)Excludes contracts where the initial term has expired and we are currently in month-to-month status.(2) "Other" consists of vendor contracts associated with network monitoring and maintenance services.Off-Balance Sheet ArrangementsAs of December 31, 2016, we did not have any off-balance sheet arrangements.Subsequent EventsHibernia AcquisitionOn January 9, 2017, we acquired 100% of Hibernia Networks. We paid $621.5 million, comprised of $515.0 million in cash consideration, $14.6 millionnet cash acquired and 3,329,872 unregistered shares of our common stock, initially valued at $75.0 million on the date of announcement, and ultimatelyvalued at $91.9 million at closing. The purchase price is subject to a final post-closing reconciliation for closing date cash, net working capital, transactionexpenses, indebtedness, certain tax payments and prepaid customer contracts.28Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.$300.0 million of the cash consideration was funded by proceeds from the issuance of the 7.875% senior unsecured notes ("Notes"), which was fundedinto escrow in December 2016 (refer to Note 6 - Debt of the consolidated financial statements for further information). The remainder was funded by a newcredit agreement, which is discussed in more detail below. The Company expects the integration of Hibernia to be substantially complete by the end of the third quarter of 2017.Credit AgreementIn conjunction with the Hibernia acquisition, we closed on a new credit agreement (the "2017 Credit Agreement") on January 9, 2017. The 2017 CreditAgreement provides a $700.0 million term loan facility and a $75.0 million revolving line of credit facility. At our election, the loans under the 2017 CreditAgreement may be made as either Base Rate Loans or Eurodollar Loans, with applicable margins at 3.00% and 4.00%, respectively. The Eurodollar Loanswill be subject to a floor of 1.00%, and the applicable margin for revolving loans will be 2.50% for Base Rate Loans and 3.50% for Eurodollar Loans.The maturity date of the term loan facility is January 9, 2024 and the maturity date of the revolving loan facility is January 9, 2022. The principalamount of the term loan facility is payable in equal quarterly installments of $1.75 million, commencing on March 31, 2017 and continuing thereafter untilthe maturity date, when the remaining balance of outstanding principal is payable in full. The revolving loan facility contains a maximum consolidated netsecured leverage ratio when more than 30% is utilized.The proceeds from the Notes and 2017 Credit Agreement were used to fund the Hibernia acquisition, repay existing indebtedness, pay various fees andexpenses incurred in connection with the acquisition and related financing transactions, and for general corporate purposes.For additional details on our indebtedness, refer to Note 6 - Debt of the consolidated financial statements or the Liquidity and Capital Resources sectionincluded herein.Critical Accounting Policies and Estimates The discussion of our financial condition and results of operations is based upon our consolidated financial statements, which have been prepared inaccordance with U.S. GAAP. In the preparation of our consolidated financial statements, we are required to make estimates and assumptions that affect thereported amounts of assets, liabilities, revenues and expenses, as well as the related disclosures of contingent assets and liabilities. We base our estimates onhistorical experience and on various other assumptions that we believe to be reasonable under the circumstances. The results of our analysis form the basis formaking assumptions about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from theseestimates under different assumptions or conditions, and the impact of such differences may be material to our consolidated financial statements. Our criticalaccounting policies have been discussed with the Audit Committee of our Board of Directors. We believe that the following critical accounting policiesaffect the more significant judgments and estimates used in the preparation of our consolidated financial statements, and believe that an understanding ofthese policies is important to a proper evaluation of the reported consolidated financial results. Our significant accounting policies are described in Note 2 tothe accompanying consolidated financial statements.Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on reportedresults of operations.Segment ReportingWe report operating results and financial data in one operating and reporting segment. The chief operating decision maker manages our business as asingle profit center in order to promote collaboration, provide comprehensive service offerings across our entire customer base, and provide incentives toemployees based on the success of the organization as a whole. Although certain information regarding selected products or services is discussed for purposesof promoting an understanding of our complex business, the chief operating decision maker manages our business and allocates resources at the consolidatedlevel.Revenue Recognition We deliver four primary services to our customers — flexible Ethernet-based wide area network services; high bandwidth Internet connectivity services;managed network services and security services; and global communication and collaboration services. Certain of our current commercial activities havefeatures that may be considered multiple elements, specifically, when we sell Customer Premise Equipment ("CPE") in addition to our services. We believethat there is sufficient evidence to determine each element’s fair29Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.value and, as a result, in those arrangements where there are multiple elements, the service revenue is recorded ratably over the term of the agreement and theequipment is accounted for as a sale, at the time of sale, as long as collectability is reasonably assured. Our services are provided under contracts that typically provide for an installation charge along with payments of recurring charges on a monthly basisfor use of the services over a committed term. Our contracts with customers specify the terms and conditions for providing such services, includinginstallation date, recurring and non-recurring fees, payment terms and length of term. These contracts call for us to provide the service in question (e.g., datatransmission between point A and point Z), to manage the activation process, and to provide ongoing support (in the form of service maintenance andtrouble-shooting) during the service term. The contracts do not typically provide the customer any rights to use specifically identifiable assets. Furthermore,the contracts generally provide us with discretion to engineer (or re-engineer) a particular network solution to satisfy each customer’s data transmissionrequirement, and typically prohibit physical access by the customer to the network infrastructure used by us and our suppliers to deliver the services.We recognize revenue as follows: Monthly Recurring Revenue. Monthly recurring revenue represents the substantial majority of our revenue, and consists of fees we charge for ongoingservices that are generally fixed in price and billed on a recurring monthly basis (one month in advance) for a specified term. At the end of the term, mostcontracts provide for a continuation of services on the same terms, either for a specified renewal period (e.g., one year) or on a month-to-month basis. Werecord recurring revenue based on the fees agreed to in each contract, as long as the contract is in effect.Usage Revenue. Usage revenue represents variable charges for certain services, based on specific usage of those services, or usage above a fixedthreshold, billed monthly in arrears. We record usage revenue based on actual usage charges billed using the rates and/or thresholds specified in eachcontract.Non-recurring Revenue. Non-recurring revenue consists of charges for installation in connection with the delivery of recurring communications services,late payments, cancellation fees, early termination fees and equipment sales. Fees billed for installation services are initially recorded as deferred revenuethen recognized ratably over the contractual term of the recurring service. We believe that the contract term serves as the best estimate of the expectedrelationship term. Fees charged for late payments, cancellation (pre-installation) or early termination (post-installation) are typically fixed or determinableper the terms of the respective contract, and are recognized as revenue when billed. In addition, from time to time we sell communications and/or networkingequipment to our customers in connection with our data networking services. We recognize revenue from the sale of equipment at the contracted selling pricewhen title to the equipment passes to the customer (generally F.O.B. origin).We record revenue only when collectability is reasonably assured, irrespective of the type of revenue.Share-Based CompensationWe issue three types of grants under our share-based compensation plan, time-based restricted stock, time-based stock options, and performance-basedrestricted stock. The time-based restricted stock and stock options generally vest over a four-year period, contingent upon meeting the requisite serviceperiod requirement. Performance awards typically vest over a shorter period, e.g., two years, starting when the performance criteria established in the granthave been met.The share price on the day of grant is used as the fair value for all restricted stock. We use the Black-Scholes option-pricing model to determine theestimated fair value for stock options. Critical inputs into the Black-Scholes option-pricing model include the following: option exercise price; fair value ofthe stock price; expected life of the option; annualized volatility of the stock; annual rate of quarterly dividends on the stock; and risk-free interest rate.Implied volatility is calculated as of each grant date based on our historical stock price volatility along with an assessment of a peer group. Other thanthe expected life of the option, volatility is the most sensitive input to our option grants. The risk-free interest rate used in the Black-Scholes option-pricingmodel is determined by referencing the U.S. Treasury yield curve rates with the remaining term equal to the expected life assumed at the date of grant.Forfeitures are estimated based on our historical analysis of attrition levels. Forfeiture estimates are updated quarterly for actual forfeitures.Income TaxesIncome taxes are accounted for under the asset and liability method pursuant to GAAP. Under this method, deferred tax assets and liabilities arerecognized for the expected future consequences attributable to the differences between the financial statement30Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.carrying amounts and the tax basis of assets and liabilities. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in the periodof the change. Further, deferred tax assets are recognized for the expected realization of available net operating loss and tax credit carryforwards. A valuationallowance is recorded on gross deferred tax assets when it is "more likely than not" that such asset will not be realized. When evaluating the realizability ofdeferred tax assets, all evidence, both positive and negative, is evaluated. Items considered in this analysis include the ability to carry back losses, thereversal of temporary differences, tax planning strategies and expectations of future earnings. We review our deferred tax assets on a quarterly basis todetermine if a valuation allowance is required based upon these factors. Changes in our assessment of the need for a valuation allowance could give rise to achange in such allowance, potentially resulting in additional expense or benefit in the period of change.Our income tax provision includes U.S. federal, state, local and foreign income taxes and is based on pre-tax income or loss. In determining the annualeffective income tax rate, we analyzed various factors, including our annual earnings and taxing jurisdictions in which the earnings were generated, theimpact of state and local income taxes and our ability to use tax credits and net operating loss carryforwards.Under GAAP for income taxes, the amount of tax benefit to be recognized is the amount of benefit that is "more likely than not" to be sustained uponexamination. We analyze our tax filing positions in all of the U.S. federal, state, local and foreign tax jurisdictions where we are required to file income taxreturns, as well as for all open tax years in these jurisdictions. If, based on this analysis, we determine that uncertainties in tax positions exist, a liability isestablished in the consolidated financial statements. We recognize accrued interest and penalties related to unrecognized tax positions in the provision forincome taxes.Estimating Allowances and Accrued LiabilitiesAllowance for Doubtful Accounts We establish an allowance for bad debts for accounts receivable amounts that may not be collectible. We state our accounts receivable balances atamounts due from the customer net of an allowance for doubtful accounts. We determine this allowance by considering a number of factors, including thelength of time receivables are past due, previous loss history and the customer’s current ability to pay. As of December 31, 2016 and 2015, we had anallowance for doubtful accounts of $2.7 million and $1.0 million, respectively. Allowance for Vendor DisputesIn the normal course of business, we identify errors by suppliers with respect to the billing of services. We perform bill verification procedures to ensurethat errors in our suppliers’ billed invoices are identified and resolved. If we conclude that a vendor has billed us inaccurately, we will record a liability onlyfor the amount that we believe is owed. As of December 31, 2016 and 2015, we had $5.8 million and $6.9 million, respectively, in disputed billings fromsuppliers that were not accrued because we do not believe we owe them.Deferred CostsInstallation costs related to provisioning of recurring communications services that we incur from third-party suppliers, directly attributable andnecessary to fulfill a particular service contract, and which costs would not have been incurred but for the occurrence of that service contract, are recorded asdeferred contract costs and expensed ratably over the contractual term of service in the same manner as the deferred revenue arising from that contract. Basedon historical experience, we believe the initial contractual term is the best estimate for the period of earnings. If any installation costs exceed the amount ofcorresponding deferred revenue, the excess cost is recognized in the current period. Goodwill and Intangible AssetsWe record the excess of the purchase price over the fair value of the net identifiable assets acquired in a business combination as goodwill. Goodwill isreviewed for impairment at least annually, in October, or more frequently if a triggering event occurs between impairment testing dates. We operate as asingle operating segment and as a single reporting unit for the purpose of evaluating goodwill impairment. Our impairment assessment begins with aqualitative assessment to determine whether it is more like than not that fair value of the reporting unit is less than its carrying value. The qualitativeassessment includes comparing our overall financial performance against the planned results used in the last quantitative goodwill impairment test.Additionally, we assess the fair value in light of certain events and circumstances, including macroeconomic conditions, industry and market considerations,cost factors, and other relevant entity and Company specific events. The selection and assessment of qualitative factors used to determine whether it is morelikely than not that the fair value of a reporting units exceeds the carrying value involves significant judgments and estimates.31Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.If it is determined under the qualitative assessment that it is more likely than not that the fair value of a reporting unit is less than its carrying value, then atwo-step quantitative impairment test is performed. Under the first step, we estimate the fair value compared with our carrying value (including goodwill). Ifthe fair value exceeds the carrying value, step two does not need to be performed. If the estimated fair value is less than the carrying value, an indication ofgoodwill impairments exists and we would need to perform step two of the impairment test. Under step two, an impairment loss would be recognized for anyexcess of the carrying amount of our goodwill over the implied fair value of that goodwill. The fair value under the two-step assessment is determined using acombination of both income and market-based approaches. There were no impairments identified for the years ended December 31, 2016, 2015 and 2014.Intangible assets arising from business combinations, such as acquired customer contracts and relationships, (collectively "customer relationships"), tradenames, intellectual property or know-how, are initially recorded at fair value. We amortize these intangible assets over the determined useful life whichranges from three to seven years. We review the intangible assets for impairment whenever events or circumstances indicate that the carrying amount of anasset may not be fully recoverable. If the total of the expected undiscounted future cash flows is less than the carrying amount of the asset, an impairment lossis recognized for the difference between fair value and the carrying value of the asset. There were no impairments recognized for the years ended December31, 2016, 2015, and 2014.Further information is available in Note 4 of the notes to the consolidated financial statements included herein.Business Combinations and Asset AcquisitionsWe allocate the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on theirestimated fair values. The excess of the purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Whendetermining the fair values of assets acquired and liabilities assumed, we make significant estimates and assumptions, especially with respect to intangibleassets.We recognize the purchase of assets and the assumption of liabilities as an asset acquisition, if the transaction does not constitute a businesscombination. The excess of the fair value of the purchase price is allocated on a relative fair value basis to the identifiable assets and liabilities. No goodwillis recorded in an asset acquisition.Critical estimates in valuing certain intangible assets include but are not limited to future expected cash flows from customer relationships anddeveloped technology, discount rates and terminal values. Our estimate of fair value is based upon assumptions believed to be reasonable, but actual resultsmay differ from estimates.Other estimates associated with the accounting for acquisitions may change as additional information becomes available regarding the assets acquiredand liabilities assumed, as more fully discussed in Note 3 of the notes to consolidated financial statements included herein.Recent Accounting PronouncementsRevenue RecognitionOn May 28, 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue fromContracts with Customers (Topic 606), which amends the existing accounting standards for revenue recognition. In August 2015, the FASB issued ASU No.2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delays the effective date of ASU 2014-09 by one year.The FASB also agreed to allow entities to choose to adopt the standard as of the original effective date. In March 2016, the FASB issued ASU No. 2016-08,Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which clarifies theimplementation guidance on principal versus agent considerations. The guidance includes indicators to assist an entity in determining whether it controls aspecified good or service before it is transferred to the customers. The new revenue recognition standard will be effective for us in the first quarter of 2018,with the option to adopt it in the first quarter of 2017. We currently anticipate adopting the new standard effective January 1, 2018. The new standard alsopermits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulativeeffect of initially applying the guidance recognized at the date of initial application (the modified retrospective method). While we are still in the process ofcompleting our analysis on the impact this guidance will have on our consolidated financial statements and related disclosures, we are not aware of anymaterial impact the new standard will have and we anticipate adopting the standard using the modified retrospective method. This assessment excludes thepotential impact the acquisition of Hibernia Networks will have on our analysis. Refer to Note 15 - Subsequent Events to the consolidated financialstatements for further details on the acquisition.32Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Lease AccountingOn February 25, 2016, the FASB issued ASU 2016-02, Leases, which requires most leases (with the exception of leases with terms of less than one year) tobe recognized on the balance sheet as an asset and a lease liability. Leases will be classified as an operating lease or a financing lease. Operating leases areexpensed using the straight-line method, whereas financing leases will be treated similarly to a capital lease under the current standard. The new standard willbe effective for annual and interim periods, within those fiscal years, beginning after December 15, 2018, but early adoption is permitted. The new standardmust be presented using the modified retrospective method beginning with the earliest comparative period presented. We are currently evaluating the effectof the new standard on our consolidated financial statements and related disclosures.Share-Based PaymentOn March 30, 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based PaymentAccounting, which was issued as part of the FASB’s simplification initiative and cover such areas as (i) the recognition of excess tax benefits and deficienciesand the classification of those excess tax benefits on the statement of cash flows, (ii) an accounting policy election for forfeitures to be estimated or accountfor when incurred, (iii) the amount an employer can withhold to cover income taxes and still qualify for equity classification, and (iv) the classification ofthose taxes paid on the statement of cash flows. This update is effective for annual and interim periods beginning after December 15, 2016, which will requireus to adopt these provisions in the first quarter of 2017. This guidance will be applied either prospectively, retrospectively or using a modified retrospectivetransition method, depending on the specific area covered. We do not expect the new guidance to have a material impact on our consolidated financialstatements and related disclosures.Classification of Certain Cash TransactionsOn August 26, 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments, which is intended to reduce diversityin practice of how certain transactions are classified and presented in the statement of cash flows in accordance with ASC 230. The ASU amends or clarifiesguidance on eight specific cash flow issues, some of which include classification on debt prepayment or debt extinguishment costs, contingent considerationpayments made after a business combination, and separately identifiable cash flows and application of the predominance principle. The standard is effectivefor financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those periods. Early adoption is permitted,provided that all of the amendments are adopted in the same period. The guidance requires application using a retrospective transition method. We arecurrently evaluating the effect of the new standard on our consolidated financial statements and related disclosures but we do not expect the new guidance tohave a material impact.Statement of Cash Flows - Restricted CashOn November 17, 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which clarifies the presentationrequirements of restricted cash within the statement of cash flows. The changes in restricted cash and restricted cash equivalents during the period should beincluded in the beginning and ending cash and cash equivalents balance reconciliation on the statement of cash flows. When cash, cash equivalents,restricted cash or restricted cash equivalents are presented in more than one line item within the statement of financial position, an entity shall calculate atotal cash amount in a narrative or tabular format that agrees to the amount shown on the statement of cash flows. Details on the nature and amounts ofrestricted cash should also be disclosed. This guidance will be effective in the first quarter of 2018 and early adoption is permitted. We do not expect the newguidance to have a material impact on our consolidated financial statements and related disclosures.Business Combinations – Clarifying the Definition of a BusinessOn January 5, 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, which clarifies thedefinition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. Thestandard introduces a screen for determining when assets acquired are not a business and clarifies that a business must include, at a minimum, an input and asubstantive process that contribute to an output to be considered a business. This standard is effective for fiscal years beginning after December 15, 2017,including interim periods within that reporting period. We do not expect this new guidance to have a material impact on our consolidated financialstatements.33Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKWe are exposed to certain market risks. These risks, which include interest rate risk and foreign currency exchange risk, arise in the normal course ofbusiness rather than from trading activities.Interest Rate Sensitivity Our exposure to market risk for changes in interest rates is primarily related to our outstanding term loans and revolving loans. The interest expenseassociated with our term loans and any loans under our revolving credit facility will vary with market rates, specifically LIBOR.For purposes of the following hypothetical calculations, we have used the term loans under the October 2015 Credit Agreement, which carries an interestrate equal to LIBOR plus 4.75%, with a LIBOR floor of 1.0%. Current LIBOR rates are below 1.0%, which means there would not be any impact to ourincome or cash flows from an increase in LIBOR until LIBOR exceeds 1.0%. Based on current rates, a hypothetical 100 basis point increase in LIBOR wouldincrease annual interest expense by approximately $4.5 million, which would decrease our income and cash flows by the same amount. A hypotheticalincrease of LIBOR to 4.0%, the average historical three-month LIBOR, would increase annual interest expense by approximately $18.1 million, which woulddecrease our income and cash flows by the same amount.We do not currently use derivative financial instruments and have not entered into any interest rate hedging transactions, but we may do so in the future.Exchange Rate Sensitivity Our exposure to market risk for changes in foreign currency rate relates to our global operations. Our consolidated financial statements are denominatedin U.S. Dollars, but a portion of our revenue, cost of telecommunication services provided and selling, general and administrative expenses are generated inthe local currency of our foreign subsidiaries. Accordingly, changes in exchange rates between the applicable foreign currency and the U.S. Dollar will affectthe translation of each foreign subsidiary’s financial results into U.S. Dollars for purposes of reporting consolidated financial results.Approximately 13.5% of our revenues for the year ended December 31, 2016 are generated by non-U.S. entities, of which 56.0% is recorded in Euros andthe remainder is recorded in British Pounds. Approximately 9.8% of our cost of telecommunications services provided and approximately 8.9% of ourselling, general and administrative expenses for the year ended December 31, 2016 are generated by the same non-U.S. entities. Therefore, it is highlyunlikely that changes in exchange rates would have a material impact on our financial conditions or results of operations.We do not currently use derivative financial instruments and have not entered into any foreign currency hedging transactions, but we may do so in thefuture.ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATAReference is made to the consolidated financial statements, the notes thereto, and the report thereon, commencing on page F-1 of this Annual Report,which consolidated financial statements, notes, and report are incorporated herein by reference.ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE None.ITEM 9A. CONTROLS AND PROCEDURESEvaluation of Disclosure Controls and ProceduresOur management, with the participation of our chief executive officer (CEO) and chief financial officer (CFO), has evaluated the effectiveness of ourdisclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (Exchange Act)), asof the end of the period covered by this Annual Report on Form 10-K. Based on such evaluation, our CEO and CFO have concluded that as of December 31,2016, our disclosure controls and procedures are designed at a reasonable assurance level and are effective to provide reasonable assurance that informationwe are required to disclose in34Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and formsof the SEC, and that such information is accumulated and communicated to our management, including our CEO and CFO, as appropriate, to allow timelydecisions regarding required disclosure. Management’s Report on Internal Control over Financial Reporting and Attestation Report of the Registered Public Accounting FirmOur management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) underthe Exchange Act). Management conducted an assessment of the effectiveness of our internal control over financial reporting based on the criteria set forth inInternal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework). Based on theassessment, management has concluded that its internal control over financial reporting was effective as of December 31, 2016, to provide reasonableassurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with U.S. GAAP. The effectiveness of ourinternal control over financial reporting as of December 31, 2016, has been audited by CohnReznick LLP, an independent registered public accounting firm,as stated in their report, which appears herein.Changes in Internal Control Over Financial ReportingDuring the year ended December 31, 2016, we implemented a new financial accounting system. In connection with the implementation of this newsystem, we updated many of the processes and procedures related to our internal control over financial reporting, as needed. We do not believe theimplementation of the new system or the corresponding changes in processes and procedures has had or will have a material or adverse effect on our internalcontrol over financing reporting. Except as otherwise described above, there were no other changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended December 31, 2016, that has materially affected, or is reasonably likely to materially affect ourinternal control over financial reporting.35Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRMON INTERNAL CONTROL OVER FINANCIAL REPORTINGThe Board of Directors and Stockholders of GTT Communications, Inc.We have audited GTT Communications, Inc. and subsidiaries’ (the “Company”) internal control over financial reporting as of December 31, 2016, based oncriteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013framework) (the “COSO criteria”). GTT Communications, Inc.’s management is responsible for maintaining effective internal control over financial reporting,and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on InternalControl over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require thatwe plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all materialrespects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testingand evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considerednecessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reportingand the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States ofAmerica. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, inreasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance thattransactions are recorded as necessary to permit preparation of financial statements in accordance with accounting principles generally accepted in the UnitedStates of America, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors ofthe company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of thecompany’s assets that could have a material effect on the financial statements.Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation ofeffectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliancewith the policies or procedures may deteriorate.In our opinion, GTT Communications, Inc. maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016,based on the COSO criteria.We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheetsof GTT Communications, Inc. and subsidiaries as of December 31, 2016 and 2015, and the related consolidated statements of operations, comprehensiveincome (loss), stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2016, and the related financial statementschedule listed in the Index at 15(a) 2, and our report dated March 8, 2017 expressed an unqualified opinion./s/ CohnReznick LLPTysons, VirginiaMarch 8, 2017 36Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.ITEM 9B. OTHER INFORMATIONNot applicable.PART IIIITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCEThe information required by this Item is incorporated herein by reference to the definitive Proxy Statement to be filed pursuant to Regulation 14A of theExchange Act for our 2017 Annual Meeting of Stockholders.ITEM 11. EXECUTIVE COMPENSATIONThe information required by this Item is incorporated herein by reference to the definitive Proxy Statement to be filed pursuant to Regulation 14A of theExchange Act for our 2017 Annual Meeting of Stockholders.ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERSThe information required by this Item is incorporated herein by reference to the definitive Proxy Statement to be filed pursuant to Regulation 14A of theExchange Act for our 2017 Annual Meeting of Stockholders.ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCEThe information required by this Item is incorporated herein by reference to the definitive Proxy Statement to be filed pursuant to Regulation 14A of theExchange Act for our 2017 Annual Meeting of Stockholders.ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICESThe information required by this Item is incorporated herein by reference to the definitive Proxy Statement to be filed pursuant to Regulation 14A of theExchange Act for our 2017 Annual Meeting of Stockholders.37Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.PART IVITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES(a) Financial Statements1.Financial Statements are listed in the Index to Financial Statements on page F-1 of this annual report.2.Financial Statement Schedules. The Financial Statement Schedule described below is filed as part of this report.DescriptionSchedule II - Valuation and Qualifying Accounts.All other financial statement schedules are not required under the relevant instructions or are inapplicable and therefore have been omitted.(b) ExhibitsThe following exhibits, which are numbered in accordance with Item 601 of Regulation S-K, are filed herewith or, as noted, incorporated by referenceherein:2.1Share Purchase Agreement, dated as of November 8, 2016, by and among the Registrant, Murosa Development S.A.R.L., a companyorganized under the laws of Luxembourg (“Murosa”), Columbia Ventures Corporation, a Washington corporation, Hibernia NGSLimited, a private company limited by shares formed under the laws of the Republic of Ireland, and Murosa as the Seller Representative(incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed November 15, 2016).2.2Agreement and Plan of Merger, dated as of September 15, 2015, by and among the Registrant, Global Telecom & TechnologyAmericas, Inc., a Virginia corporation, Duo Merger Sub, Inc., a Delaware corporation, One Source Networks Inc., a Texas corporation,Ernest Cunningham, as representative of the equityholders in One Source Networks Inc. and, for limited portions of the Agreement andPlan of Merger, certain key employees of One Source named therein (incorporated by reference to Exhibit 2.1 to the Registrant’sCurrent Report on Form 8-K filed September 18, 2015).2.3Agreement and Plan of Merger Amendment No.1 to the Agreement and Plan of Merger, dated as of September 15, 2015, by and amongthe Registrant, Global Telecom & Technology Americas, Inc., a Virginia corporation, Duo Merger Sub, Inc., a Delaware corporation,One Source Networks Inc., a Texas corporation, Ernest Cunningham, as representative of the equityholders in One Source Networks Inc.and, for limited portions of the Agreement and Plan of Merger, certain key employees of One Source named therein (incorporated byreference to Exhibit 2.7 to the Registrant’s Annual Report on Form 10-K filed March 9, 2016).2.4Agreement and Plan of Merger Amendment No. 2 to the Agreement and Plan of Merger, dated as of September 15, 2015, by and amongthe Registrant, Global Telecom & Technology Americas, Inc., a Virginia corporation, Duo Merger Sub, Inc., a Delaware corporation,One Source Networks Inc., a Texas corporation, Ernest Cunningham, as representative of the equityholders in One Source Networks Inc.and, for limited portions of the Agreement and Plan of Merger, certain key employees of One Source named therein (incorporated byreference to Exhibit 2.8 to the Registrant’s Annual Report on Form 10-K filed March 9, 2016).2.5Stock Purchase Agreement, dated February 19, 2015, by and among Global Telecom & Technology Americas, Inc., a Delawarecorporation, the Registrant, MegaPath Group, Inc., a Delaware corporation, and MegaPath Corporation, a Virginia corporation(incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed February 25, 2015).2.6Agreement and Plan of Merger, dated as of October 1, 2014, by and among the Registrant, Global Telecom & Technology Americas,Inc., GTT UNSI, Inc., American Broadband, Inc. (d/b/a United Network Services, Inc.) and Francis D. John, as stockholder representative(incorporated by reference to Exhibit 2.1 to the Registrant’s Current Report on Form 8-K filed October 7, 2014).3.1Second Amended and Restated Certificate of Incorporation, dated October 16, 2006 (incorporated by reference to Exhibit 3.1 to theRegistrant’s Current Report on Form 8-K filed October 19, 2006).38Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.3.2Certificate of Amendment to Second Amended and Restated Certificate of Incorporation, dated December 31, 2013 (incorporated byreference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed January 6, 2014).3.3Amended and Restated Bylaws, dated October 15, 2006 (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Reporton Form 8-K filed October 19, 2006).3.4Amendment to Amended and Restated Bylaws, dated May 7, 2007 (incorporated by reference to Exhibit 3.1 to the Registrant’sCurrent Report on Form 8-K filed May 10, 2007).4.1Specimen of Common Stock Certificate (incorporated by reference to Exhibit 4.1 to the Registrant’s Quarterly Report on Form 10-Qfiled November 14, 2006).4.2Form of Registration Rights Agreement, dated as of 2005, among the Registrant, Universal Telecommunications, Inc., Hackman FamilyTrust, Charles Schwab & Company Custodian FBO David Ballarini IRA and Mercator Capital L.L.C. (incorporated by reference toExhibit 10.8 to the Registrant’s Registration Statement on Form S-1 (File No. 333-122303) filed January 26, 2005).4.3Registration Rights Agreement, dated April 30, 2012, among the Registrant, Jordon Lowe and Daniel Brosk Trust dated December 22,2006 (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed May 4, 2012).4.4Form of Registration Rights Agreement, dated March 28, 2013 (incorporated by reference to Exhibit 10.1 to the Registrant’s CurrentReport on Form 8-K filed April 3, 2013).4.5Indenture, dated as of December 22, 2016, by and between GTT Escrow Corporation and Wilmington Trust, National Association, astrustee December 22, 2016 (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed December22, 2016).4.6First Supplemental Indenture, dated as of January 9, 2017, by and among the Registrant, the Guaranteeing Subsidiaries party theretoand Wilmington Trust, National Association, as trustee (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report onForm 8-K filed January 13, 2017).10.1 +2006 Employee, Director and Consultant Stock Plan, as amended (incorporated by reference to Annex E to the Registrant’s DefinitiveProxy Statement on Schedule 14A filed October 2, 2006).10.2 +2011 Employee, Director and Consultant Stock Plan (incorporated by reference to Annex A to the Registrant’s Definitive ProxyStatement on Schedule 14A filed April 29, 2011).10.3 +2015 Stock Option and Incentive Plan (incorporated by reference to Appendix A to the Registrant’s Definitive Proxy Statement onSchedule 14A filed April 30, 2015).10.4 +Employment Agreement for H. Brian Thompson, dated October 15, 2006 (incorporated by reference to Exhibit 10.1 to the Registrant’sCurrent Report on Form 8-K filed October 19, 2006).10.5 +Employment Agreement for Richard D. Calder, Jr., dated May 7, 2007 (incorporated by reference to Exhibit 10.1 to the Registrant’sCurrent Report on Form 8-K filed May 10, 2007).10.6 +Amendment No. 1 to the Employment Agreement for Richard D. Calder, Jr., dated July 18, 2008 (incorporated by reference to Exhibit10.1 to the Registrant’s Current Report on Form 8-K filed August 4, 2008).10.7 +Employment Agreement for Christopher McKee, dated September 12, 2011 (incorporated by reference to Exhibit 10.3 to theRegistrant’s Current Report on Form 8-K filed September 16, 2011).10.8 +Employment Agreement for Michael Sicoli, dated as of April 13, 2015 (incorporated by reference to Exhibit 10.2 to the Registrant’sQuarterly Report on Form 10-Q filed May 7, 2015).10.9* +Employment Agreement for Layne Levine, dated October 24, 2012.10.10Credit Agreement, dated as of January 9, 2017, by and among (1) the Registrant, as borrower, (2) KeyBank National Association, as theadministrative agent and as an LC Issuer, (3) KeyBanc Capital Markets Inc., Credit Suisse Securities (USA) LLC and SunTrustRobinson Humphrey, Inc., as joint lead arrangers and joint bookrunners, (4) Credit Suisse AG, Cayman Islands Branch, and SunTrustBank, as the syndication agents, (5) Citizens Bank, Wells Fargo Bank, National Association, and ING Capital LLC, as thedocumentation agents and (6) the lenders party thereto (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Reporton Form 8-K filed January 13, 2017).39Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.10.11Credit Agreement, dated as of October 22, 2015, among: (i) the Registrant, as the borrower; (ii) the lenders from time to time partyhereto; (ii) KeyBank National Association, as the administrative agent, as the Swing Line Lender, and as LC Issuer, (iv) SunTrust Bank,as a Lender and as the syndication agent; (v) KeyBank Capital Markets Inc. and SunTrust Robinson Humphrey, Inc., as joint leadarrangers and joint bookrunners; and (vi) MUFG Union Bank, N.A., Pacific Western Bank, CIT Bank, N.A., ING Capital LLC, SociétéGénérale and CoBank, ACB as Co-Documentation Agents (incorporated by reference to Exhibit 10.1 to the Registrant’s CurrentReport on Form 8-K filed October 27, 2016).10.12Incremental Term Loan Assumption Agreement, dated as of May 3, 2016, among (1) the Registrant, as the borrower, (2) KeyBankNational Association, as the administrative agent, and (3) KeyBank National Association, as the Initial Term Lender (incorporated byreference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed May 5, 2016).10.13Amendment No. 1, dated as of June 28, 2016, among the Registrant, as the borrower, the lenders party thereto, and KeyBank NationalAssociation, as the administrative agent and as the Additional Tranche B Term Loan Lender (incorporated by reference to Exhibit 10.1to the Registrant’s Current Report on Form 8-K filed June 29, 2016).10.14Second Amended and Restated Credit Agreement, dated August 6, 2014, among the Registrant, Global Telecom & TechnologyAmericas, Inc., GTT Global Telecom Government Services, LLC, nLayer Communications, Inc., PacketExchange (USA), Inc.,PacketExchange, Inc., TEK Channel Consulting, LLC, WBS Connect LLC, Communication Decisions-SNVC, LLC, Core180, LLC,Electra, LTD, IDC Global, Inc., NT Network Services, LLC, GTT 360, Inc. and Wall Street Network Solutions, LLC, as co-borrows, andWebster Bank, N.A., as administrative agent, lead arranger and lender, the other lenders (as defined therein) party thereto, PacificWestern Bank, as syndication agent and East West Bank and Fifth Third Bank, as co-document agents (incorporated by reference toExhibit 10.1 to the Registrant’s Current Report on Form 8-K filed August 12, 2014).10.15Amendment Agreement, dated April 1, 2015, to the Second Amended and Restated Credit Agreement, dated August 6, 2014, among theRegistrant, Global Telecom & Technology Americas, Inc., GTT Global Telecom Government Services, LLC, CommunicationDecisions-SNVC, LLC, Core180, LLC, Electra, LTD, NT Network Services, LLC, GTT 360, Inc., Wall Street Network Solutions, LLC,American Broadband, Inc., Airband Communications, Inc., Sparkplug, Inc., and MegaPath Corporation, as borrows, and KeybankNational Association, as administrative agent, joint lead arranger, L/C issuer and lender, the other lenders (as defined therein) partythereto, Webster Bank, N.A. as joint lead arranger, syndication agent, L/C issuer and lender, Pacific Western Bank, Cobank, ACB andMUFG Union Bank, N.A., as co-document agents (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report onForm 8-K filed April 7, 2015).10.16Amendment Agreement, dated June 4, 2015, to the Second Amended and Restated Credit Agreement, dated August 6, 2014, among theRegistrant, Global Telecom & Technology Americas, Inc., GTT Global Telecom Government Services, LLC, CommunicationDecisions-SNVC, LLC, Core180, LLC, Electra, LTD, IDC Global, Inc., NT Network Services, LLC, GTT 360, Inc., Wall Street NetworkSolutions, LLC, American Broadband, Inc., Airband Communications, Inc., Sparkplug, Inc., and GTT Communications (MP), Inc., asborrows, and Keybank National Association, as administrative agent, joint lead arranger, L/C issuer and lender, the other lenders (asdefined therein) party thereto, Webster Bank, N.A., as joint lead arranger, syndication agent, L/C issuer and lender, Pacific WesternBank, Cobank, ACB and MUFG Union Bank, N.A., as co-document agents (incorporated by reference to Exhibit 99.4 to theRegistrant’s Current Report on Form 8-K/A filed June 10, 2015).10.17Amended and Restated Credit Agreement, dated December 30, 2013, among the Registrant, Global Telecom & Technology Americas,Inc., GTT Global Telecom Government Services, LLC, nLayer Communications, Inc., PacketExchange (USA), Inc., PacketExchange,Inc., TEK Channel Consulting, LLC, WBS Connect LLC, Communication Decisions-SNVC, LLC, Core180, LLC, Electra, LTD, IDCGlobal, Inc., NT Network Services, LLC, Webster Bank, N.A., and the other Lenders (as defined therein) party thereto (incorporated byreference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed January 6, 2014).10.18Warrant Purchase and Exercise Agreement, dated as of August 6, 2014, by and among the Registrant, BIA Digital Partners SBIC II LP,BNY Mellon-Alcentra Mezzanine III, L.P., Plexus Fund II, L.P. and GTT Communications, Inc. (incorporated by reference to Exhibit10.2 to the Registrant’s Current Report on Form 8-K filed August 12, 2014).21.1*Subsidiaries of the Registrant.23.1*Consent of CohnReznick LLP.40Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.24.1*Power of Attorney (included on the signature page to this Annual Report).31.1*Certification of Chief Executive Officer pursuant to Rules 13a-14 and 15d-14 promulgated under the Securities Exchange Act of 1934.31.2*Certification of Chief Financial Officer pursuant to Rules 13a-14 and 15d-14 promulgated under the Securities Exchange Act of 1934.32.1*Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-OxleyAct of 2002.32.2*Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-OxleyAct of 2002.99.1 +2016 Employee Stock Purchase Plan (incorporated by reference to Exhibit 99.1 to the Registrant’s Registration Statement on Form S-8(File No. 333-210488) filed March 30, 2016).101.INS**XBRL Instance Document101.SCH**XBRL Taxonomy Extension Schema Document101.CAL**XBRL Taxonomy Extension Calculation Linkbase Document101.DEF**XBRL Taxonomy Extension Definition Linkbase Document101.LAB**XBRL Taxonomy Extension Label Linkbase Document101.PRE**XBRL Taxonomy Extension Presentation Linkbase Document101.INS**XBRL Instance Document101.SCH**XBRL Taxonomy Extension Schema Document101.CAL**XBRL Taxonomy Extension Calculation Linkbase Document101.DEF**XBRL Taxonomy Extension Definition Linkbase Document101.LAB**XBRL Taxonomy Extension Label Linkbase Document101.PRE**XBRL Taxonomy Extension Presentation Linkbase Document101.INS**XBRL Instance Document *Filed herewith**Pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement orprospectus for purposes of Sections 11 or 12 of the Securities Act of 1933 or Section 18 of the Securities Exchange Act of 1934 andotherwise are not subject to liability. +Denotes a management or compensatory plan or arrangement. ITEM 16. FORM 10-K SUMMARYNot applicable.SIGNATURESPursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on itsbehalf by the undersigned, thereunto duly authorized. GTT COMMUNICATIONS, INC. By:/s/ Richard D. Calder, Jr. Richard D. Calder, Jr. President and Chief Executive Officer Date: March 8, 201741Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.POWER OF ATTORNEYKNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Richard D. Calder, Jr. andMichael T. Sicoli, jointly and severally, his attorney-in-fact, each with the full power of substitution, for such person, in any and all capacities, to sign anyand all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto and other documents in connection therewith, with theSecurities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thingrequisite and necessary to be done in connection therewith, as fully to all intents and purposes as he might do or could do in person hereby ratifying andconfirming all that each of said attorneys-in-fact and agents, or his substitute, may do or cause to be done by virtue hereof.Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed on or before March 8, 2017 by the following persons onbehalf of the registrant and in the capacities indicated.Signature Title/s/ Richard D. Calder, Jr. President, Chief Executive Officer andRichard D. Calder, Jr. Director (Principal Executive Officer) /s/ Michael T. Sicoli Chief Financial OfficerMichael T. Sicoli (Principal Financial Officer) /s/ Daniel M. Fraser Vice President and ControllerDaniel M. Fraser (Principal Accounting Officer) /s/ H. Brian Thompson Chairman of the Board and ExecutiveH. Brian Thompson Chairman /s/ Nicola A. Adamo DirectorNicola A. Adamo /s/ S. Joseph Bruno DirectorS. Joseph Bruno /s/ Rhodric C. Hackman DirectorRhodric C. Hackman /s/ Howard Janzen DirectorHoward Janzen /s/ Elizabeth Satin DirectorElizabeth Satin /s/ Theodore B. Smith, III DirectorTheodore B. Smith, III 42Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.INDEX TO FINANCIAL STATEMENTS GTT Communications, Inc. Report of Independent Registered Public Accounting FirmF - 2Consolidated Balance Sheets as of December 31, 2016 and 2015F - 3Consolidated Statements of Operations for the Years Ended December 31, 2016, 2015, and 2014F - 4Consolidated Statements of Comprehensive Income (Loss) for the Years Ended December 31, 2016, 2015, and 2014F - 5Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2016, 2015, and 2014F - 6Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015, and 2014F - 7Notes to Consolidated Financial StatementsF - 8F - 1Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRMTo the Board of Directors and Stockholders of GTT Communications, Inc.We have audited the accompanying consolidated balance sheets of GTT Communications, Inc. and subsidiaries (the “Company”) as of December 31, 2016and 2015, and the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity, and cash flows for each of the three yearsin the period ended December 31, 2016. Our audits also included the financial statement schedule listed in the Index at 15(a) 2. These financial statementsand schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedulebased on our audits.We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require thatwe plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includesexamining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accountingprinciples used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our auditsprovide a reasonable basis for our opinion.In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of GTT Communications,Inc. and subsidiaries at December 31, 2016 and 2015, and the results of their operations and their cash flows for each of the three years in the period endedDecember 31, 2016, in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the related financialstatement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information setforth therein.We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), GTT Communications, Inc. andsubsidiaries internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control-Integrated Framework issuedby the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated March 8, 2017 expressed an unqualifiedopinion thereon./s/ CohnReznick LLPTysons, VirginiaMarch 8, 2017F - 2Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.GTT Communications, Inc.Consolidated Balance Sheets(Amounts in thousands, except for share and per share data) December 31, 2016 December 31, 2015ASSETS Current assets: Cash and cash equivalents$29,748 $14,630Accounts receivable, net of allowances of $2,656 and $1,015, respectively76,292 60,446Deferred costs3,415 4,159Prepaid expenses5,765 7,794Other assets3,565 5,869Total current assets118,785 92,898Restricted cash and cash equivalents304,266 —Property and equipment, net43,369 38,823Intangible assets, net193,936 182,184Goodwill280,593 270,956Other long-term assets12,312 11,593Total assets$953,261 $596,454LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable$11,334 $22,725Accrued expenses and other current liabilities36,888 43,115Acquisition earn-outs and holdbacks24,379 12,842Capital lease, current1,015 1,392Short-term portion of long-term debt4,300 4,000Deferred revenue, short-term portion17,875 15,469Total current liabilities95,791 99,543Capital lease, noncurrent120 961Long-term debt725,208 382,243Deferred revenue, long-term portion3,416 2,292Other long-term liabilities967 929Total liabilities825,502 485,968Commitments and contingencies Stockholders' equity: Common stock, par value $.0001 per share, 80,000,000 shares authorized, 37,228,144 and36,533,634 shares issued and outstanding as of December 31, 2016 and 2015, respectively3 3Additional paid-in capital197,326 182,797Accumulated deficit(64,641) (69,901)Accumulated other comprehensive loss(4,929) (2,413)Total stockholders' equity127,759 110,486Total liabilities and stockholders' equity$953,261 $596,454 The accompanying notes are an integral part of these consolidated financial statements.F - 3Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.GTT Communications, Inc.Consolidated Statements of Operations(Amounts in thousands, except for share and per share data) Year Ended December 31, 2016 December 31, 2015 December 31, 2014Revenue: Telecommunications services$521,688 $369,250 $207,343 Operating expenses: Cost of telecommunications services274,012 204,458 128,086Selling, general and administrative expenses143,193 101,712 45,613Severance, restructuring and other exit costs870 12,670 9,425Depreciation and amortization62,788 46,708 24,921 Total operating expenses480,863 365,548 208,045 Operating income (loss)40,825 3,702 (702) Other expense: Interest expense, net(29,428) (13,942) (8,454)Loss on debt extinguishment(1,632) (3,420) (3,104)Other expense, net(577) (1,167) (8,636) Total other expense(31,637) (18,529) (20,194) Income (loss) before income taxes9,188 (14,827) (20,896) Income tax expense (benefit)3,928 (34,131) 2,083 Net income (loss)$5,260 $19,304 $(22,979) Earnings (loss) per share: Basic$0.14 $0.55 $(0.85)Diluted$0.14 $0.54 $(0.85) Weighted average shares: Basic37,055,663 34,973,284 27,011,381Diluted37,568,915 35,801,395 27,011,381 The accompanying notes are an integral part of these consolidated financial statements.F - 4Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.GTT Communications, Inc.Consolidated Statements of Comprehensive Income (Loss)(Amounts in thousands) Year Ended December 31, 2016 December 31, 2015 December 31, 2014 Net income (loss)$5,260 $19,304 $(22,979) Other comprehensive income (loss): Foreign currency translation adjustment(2,516) (1,503) (630)Comprehensive income (loss)$2,744 $17,801 $(23,609) The accompanying notes are an integral part of these consolidated financial statements. F - 5Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.GTT Communications, Inc.Consolidated Statements of Stockholders’ Equity(Amounts in thousands, except for share data) Common Stock AdditionalPaid -In Capital AccumulatedDeficit Accumulated OtherComprehensive Shares Amount Loss TotalBalance, December 31, 201323,311,023 $2 $76,014 $(66,226) $(280) $9,510 Share-based compensation for options issued— — 883 — — 883 Share-based compensation for restricted stockissued1,030,482 — 1,535 — — 1,535 Tax withholding related to the vesting ofrestricted stock units(147,025) — (1,591) — — (1,591) Shares issued in connection with acquisition earn-out306,122 — 3,704 — — 3,704 Shares issued in connection with acquisitions325,438 — 3,884 — — 3,884 Cashless exercise of warrants913,749 — 9,576 — — 9,576 Shares issued in offerings, net of offerings costs7,475,000 1 72,679 — — 72,680 Stock options exercised633,754 — 994 — — 994 Net loss— — — (22,979) — (22,979) Foreign currency translation— — — — (630) (630) Balance, December 31, 201433,848,543 3 167,678 (89,205) (910) 77,566 Share-based compensation for options issued— — 1,591 — — 1,591 Share-based compensation for restricted stockissued1,536,043 — 6,285 — — 6,285 Tax withholding related to the vesting ofrestricted stock units(195,917) — (3,471) — — (3,471) Shares issued in connection with acquisitions1,085,844 — 9,845 — — 9,845 Stock options exercised259,121 — 869 — — 869 Net income— — — 19,304 — 19,304 Foreign currency translation— — — — (1,503) (1,503) Balance, December 31, 201536,533,634 3 182,797(69,901)(2,413)110,486 Share-based compensation for options issued— — 1,790 — — 1,790 Share-based compensation for restricted stockissued408,108 — 13,985 — — 13,985 Tax withholding related to the vesting ofrestricted stock units(276,365) — (5,650) — — (5,650) Shares issued in connection with employee stockpurchase plan77,279 — 1,181 — — 1,181 Shares issued in connection with acquisition178,202 — 1,995 — — 1,995 Stock options exercised307,286 — 1,228 — — 1,228 Net income— — — 5,260 — 5,260 Foreign currency translation— — — — (2,516) (2,516) Balance, December 31, 201637,228,144 $3 $197,326 $(64,641) $(4,929) $127,759Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The accompanying notes are an integral part of these consolidated financial statements.F - 6Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.GTT Communications, Inc.Consolidated Statements of Cash Flows(Amounts in thousands) Year Ended December 31, 2016 2015 2014Cash flows from operating activities: Net income (loss)$5,260 $19,304 $(22,979)Adjustments to reconcile net income (loss) to net cash provided by (used in) operatingactivities: Depreciation and amortization62,788 46,708 24,921Share-based compensation15,775 7,876 2,418Debt discount amortization862 181 420Change in fair value of warrant liability— — 6,857Loss on debt extinguishment1,632 3,420 3,104Amortization of debt issuance costs1,531 1,021 1,014Deferred income taxes2,209 (30,500) —Change in fair value of acquisition earn-out— 880 1,554Changes in operating assets and liabilities, net of acquisitions: Accounts receivable, net(14,859) (7,891) (4,965)Deferred costs538 (2,883) 251Prepaid expenses and other current assets4,763 (8,094) (804)Other assets(3,863) (6,114) (1,596)Accounts payable(12,322) (8,694) (14,235)Accrued expenses and other current liabilities(7,099) 1,829 (3,679)Deferred revenue and other liabilities3,328 7,608 1,244Net cash provided by (used in) operating activities60,543 24,651 (6,475) Cash flows from investing activities: Acquisition of businesses, net of cash acquired(14,146) (300,702) (37,488)Purchase of customer contracts(20,000) — (206)Change in restricted cash and cash equivalents(304,266) — —Purchases of property, equipment and software(24,189) (14,070) (5,819)Net cash used in investing activities(362,601) (314,772) (43,513) Cash flows from financing activities: Proceeds from line of credit— — 3,000Repayment of line of credit— — (6,000)Proceeds from revolving line of credit47,000 5,000 —Repayment of revolving line of credit(32,000) — —Proceeds from term loan29,850 622,000 125,000Repayment of term loan(4,225) (353,626) (63,124)Proceeds from senior note300,000 — —Proceeds from mezzanine debt— — 1,500Repayment of mezzanine debt— — (31,000)Payment of earn-out and holdbacks(15,563) (3,729) (1,155)Debt issuance costs(1,385) (12,579) (2,213)Settlement of warrant liability— — (9,576)Repayment of capital leases(1,825) (933) (284)Proceeds from issuance of common stock under employee stock purchase plan1,181 — —Tax withholding related to the vesting of restricted stock awards(5,650) (3,471) (1,591)Exercise of stock options1,228 869 994Shares issued in offering, net of offering costs— — 72,680Net cash provided by financing activities318,611 253,531 88,231 Effect of exchange rate changes on cash(1,435) 1,964 5,228Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Net increase (decrease) in cash and cash equivalents15,118 (34,626) 43,471 Cash and cash equivalents at beginning of year14,630 49,256 5,785 Cash and cash equivalents at end of year$29,748 $14,630 $49,256 Supplemental disclosure of cash flow information: Cash paid for interest$26,345 $13,132 $7,976Cash paid for taxes$1,038 $434 $911 Supplemental disclosure of non-cash investing and financing activities: Fair value of current assets acquired$889 $26,094 $6,193Fair value of non-current assets acquired*$53,428 $171,768 $37,726Fair value of current liabilities assumed$640 $26,053 $19,847Fair value of non-current liabilities assumed$— $1,895 $437Shares issued in connection with acquisition earn-out$— $— $3,704Shares issued in connection with acquisition$1,995 $9,845 $3,884Cashless exercise of warrants$— $— $9,576* Excludes goodwill The accompanying notes are an integral part of these consolidated financial statements. F - 7Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.GTT Communications, Inc. Notes to Consolidated Financial StatementsNOTE 1 — ORGANIZATION AND BUSINESS Organization and Business GTT Communications, Inc. ("GTT," or the "Company",) is a provider of cloud networking services to multinational clients. The Company offers a broadportfolio of global services including: wide area network services ("WAN"); Internet services; managed network and security services; and voice and unifiedcommunication services.GTT's global Tier 1 IP network delivers connectivity to clients around the world. The Company provides services to leading multinational enterprises,carriers and government customers in over 100 countries. GTT differentiates itself from its competition by delivering service to its clients with simplicity,speed and agility.NOTE 2 — SIGNIFICANT ACCOUNTING POLICIESBasis of Presentation of Consolidated Financial Statements and Use of Estimates The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompanytransactions and balances have been eliminated in consolidation.The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America("GAAP") requires management to make estimates and assumptions that affect certain reported amounts of assets and liabilities and disclosure of contingentassets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Significantestimates are used when establishing allowances for doubtful accounts, accruals for billing disputes and exit activities, determining useful lives fordepreciation and amortization, assessing the need for impairment charges (including those related to intangible assets and goodwill), determining the fairvalues of assets acquired and liabilities assumed in business combinations, accounting for income taxes and related valuation allowances against deferred taxassets and estimating the grant date fair values used to compute the share-based compensation expense. Management evaluates these estimates andjudgments on an ongoing basis and makes estimates based on historical experience, current conditions and various other assumptions that are believed to bereasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities aswell as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from these estimatesunder different assumptions or conditions.Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on reportedresults of operations.Segment ReportingThe Company reports operating results and financial data in one operating and reportable segment. The chief operating decision maker manages theCompany as a single profit center in order to promote collaboration, provide comprehensive service offerings across its entire customer base and provideincentives to employees based on the success of the organization as a whole. Although certain information regarding selected products or services arediscussed for purposes of promoting an understanding of the Company's complex business, the chief operating decision maker manages the Company andallocates resources at the consolidated level.Revenue RecognitionThe Company delivers four primary services to its customers — flexible WAN services; high bandwidth Internet connectivity services; managed networkservices and security services; and global communication and collaboration services. Certain of its current commercial activities have features that may beconsidered multiple elements, specifically, when the Company sells one of its connectivity services in addition to Customer Premise Equipment ("CPE"). TheCompany believes that there is sufficient evidence to determine each element’s fair value and, as a result, in those arrangements where there are multipleelements, the service revenue is recorded ratably over the term of the agreement and the equipment is accounted for as a sale, at the time of sale, as long ascollectability is reasonably assured. F - 8Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The Company's services are provided under contracts that typically provide for an installation charge as well as payments of recurring charges on amonthly basis for use of the services over a committed term. Its contracts with customers specify the terms and conditions for providing such services,including installation date, recurring and non-recurring fees, payment terms and length of term. These contracts call for the Company to provide the servicein question (e.g., data transmission between point A and point Z), to manage the activation process and to provide ongoing support (in the form of servicemaintenance and trouble-shooting) during the service term. The contracts do not typically provide the customer any rights to use specifically identifiableassets. Furthermore, the contracts generally provide the Company with discretion to engineer (or re-engineer) a particular network solution to satisfy eachcustomer’s data transmission requirement, and typically prohibit physical access by the customer to the network infrastructure used by the Company and itssuppliers to deliver the services.The Company recognizes revenue as follows: Monthly Recurring Revenue. Monthly recurring revenue represents the substantial majority of the Company's revenue, and consists of fees charged forongoing services that are generally fixed in price and billed on a recurring monthly basis (one month in advance) for a specified term. At the end of the term,most contracts provide for a continuation of services on the same terms, either for a specified renewal period (e.g., one year) or on a month-to-month basis.The Company records recurring revenue based on the fees agreed to in each contract, as long as the contract is in effect.Usage Revenue. Usage revenue represents variable charges for certain services, based on specific usage of those services, or usage above a fixedthreshold, billed monthly in arrears. The Company records usage revenue based on actual usage charges billed using the rates and/or thresholds specified ineach contract.Non-recurring Revenue. Non-recurring revenue consists of charges for installation in connection with the delivery of recurring communications services,late payments, cancellation fees, early termination fees and equipment sales. Fees billed for installation services are initially recorded as deferred revenuethen recognized ratably over the contractual term of the recurring service. Management believes that the contract term serves as the best estimate of theexpected relationship term. Fees charged for late payments, cancellation (pre-installation) or early termination (post-installation) are typically fixed ordeterminable per the terms of the respective contract, and are recognized as revenue when billed. In addition, from time to time the Company sellscommunications equipment to its customers in connection with its data networking services. The Company recognizes revenue from the sale of equipment atthe contracted selling price when title to the equipment passes to the customer (generally F.O.B. origin).The Company records revenue only when collectability is reasonably assured, irrespective of the type of revenue.Universal Service Fund (USF), Gross Receipts Taxes and Other SurchargesThe Company is liable in certain cases for collecting regulatory fees and/or certain sales taxes from its customers and remitting the fees and taxes to theapplicable governing authorities. Where the Company collects on behalf of a regulatory agency, the Company does not record any revenue. The Companyrecords applicable taxes on a net basis.Cost of Telecommunications ServicesCost of telecommunications services includes direct costs incurred in accessing other telecommunications providers’ networks in order to maintain theCompany's global IP network and provide telecommunications services to the Company's customers including access, co-location, and usage-based charges.Marketing and Advertising CostsCosts related to marketing and advertising are expensed as incurred and included in selling, general and administrative expenses in our consolidatedstatements of operations. Our marketing and advertising expense was $2.2 million, $1.3 million and $0.9 million for the years ended December 31, 2016,2015 and 2014, respectively.Share-Based Compensation The Company issues three types of equity grants under its share-based compensation plan: time-based restricted stock, time-based stock options andperformance-based restricted stock. The time-based restricted stock and stock options generally vest over a four-year period, contingent upon meeting therequisite service period requirement. Performance awards typically vest over a shorter period, e.g. two years, starting when the performance criteriaestablished in the grant have been met.F - 9Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The share price on the day of grant is used as the fair value for all restricted stock. The Company uses the Black-Scholes option-pricing model todetermine the estimated fair value for stock options. Critical inputs into the Black-Scholes option-pricing model include the following: option exercise price;fair value of the stock price; expected life of the option; annualized volatility of the stock; annual rate of quarterly dividends on the stock; and risk-freeinterest rate.Implied volatility is calculated as of each grant date based on our historical stock price volatility along with an assessment of a peer group. Other thanthe expected life of the option, volatility is the most sensitive input to our option grants. The risk-free interest rate used in the Black-Scholes option-pricingmodel is determined by referencing the U.S. Treasury yield curve rates with the remaining term equal to the expected life assumed at the date of grant.Forfeitures are estimated based on our historical analysis of attrition levels. Forfeiture estimates are updated quarterly for actual forfeitures.The expense is recognized on a straight-line basis over the vesting period. The Company recognizes share-based compensation expense for performanceawards when the achievement of the performance criteria is considered probable.Other Expense, Net The Company recognized other expense, net, of $0.6 million, $1.2 million, and $8.6 million for the years ended December 31, 2016, 2015 and 2014respectively. The following table presents other expense, net by type: 2016 2015 2014Change in fair value of warrant liability$— $— $6,857Change in fair value of acquisition earn-outs— 880 1,554Other577 287 225 Total other expense, net$577 $1,167 $8,636Income Taxes Income taxes are accounted for under the asset and liability method pursuant to GAAP. Under this method, deferred tax assets and liabilities arerecognized for the expected future consequences attributable to the differences between the financial statement carrying amounts and the tax basis of assetsand liabilities. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in the period of the change. Further, deferred tax assets arerecognized for the expected realization of available net operating loss and tax credit carryforwards. A valuation allowance is recorded on gross deferred taxassets when it is "more likely than not" that such asset will not be realized. When evaluating the realizability of deferred tax assets, all evidence, both positiveand negative is evaluated. Items considered in this analysis include the ability to carry back losses, the reversal of temporary differences, tax planningstrategies and expectations of future earnings. The Company reviews its deferred tax assets on a quarterly basis to determine if a valuation allowance isrequired based upon these factors. Changes in the Company's assessment of the need for a valuation allowance could give rise to a change in such allowance,potentially resulting in additional expense or benefit in the period of change.The Company's income tax provision includes U.S. federal, state, local and foreign income taxes and is based on pre-tax income or loss. In determiningthe annual effective income tax rate, the Company analyzed various factors, including its annual earnings and taxing jurisdictions in which the earnings weregenerated, the impact of state and local income taxes and its ability to use tax credits and net operating loss carryforwards.Under GAAP for income taxes, the amount of tax benefit to be recognized is the amount of benefit that is "more likely than not" to be sustained uponexamination. The Company analyzes its tax filing positions in all of the U.S. federal, state, local and foreign tax jurisdictions where it is required to fileincome tax returns, as well as for all open tax years in these jurisdictions. If, based on this analysis, the Company determines that uncertainties in taxpositions exist, a liability is established in the consolidated financial statements. The Company recognizes accrued interest and penalties related tounrecognized tax positions in the provision for income taxes.Comprehensive Income (Loss) In addition to net income (loss), comprehensive income (loss) includes charges or credits to equity occurring other than as a result of transactions withstockholders. For the Company, this consists of foreign currency translation adjustments.F - 10Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Earnings (Loss) Per ShareBasic earnings (loss) per share is computed by dividing net income or (loss) available to common stockholders by the weighted average number ofcommon shares outstanding. Diluted earnings per share reflect, in periods with earnings and in which they have a dilutive effect, the effect of common sharesissuable upon exercise of stock options and warrants.The table below details the calculations of earnings (loss) per share (in thousands, except for share and per share amounts): Year Ended December 31, 2016 2015 2014Numerator for basic and diluted EPS – income (loss) available to commonstockholders$5,260 $19,304 $(22,979)Denominator for basic EPS – weighted average shares37,055,663 34,973,284 27,011,381Effect of dilutive securities513,252 828,111 —Denominator for diluted EPS – weighted average shares37,568,915 35,801,395 27,011,381 Earnings (loss) per share: basic$0.14 $0.55 $(0.85)Earnings (loss) per share: diluted$0.14 $0.54 $(0.85) The table below details the anti-dilutive common share items that were excluded in the computation of earnings (loss) per share (amounts in thousands): December 31, 2016 2015 2014Stock options— 256 1,363Cash and Cash Equivalents Cash and cash equivalents may include deposits with financial institutions as well as short-term money market instruments, certificates of deposit anddebt instruments with maturities of three months or less when purchased.Restricted Cash and Cash EquivalentsCash and cash equivalents that are contractually restricted from operating use are classified as restricted cash and cash equivalents. On December 22,2016, the Company completed a private offering of $300.0 million aggregate principal amount of 7.875% senior unsecured notes due in 2024 (the "Notes").The proceeds of the private offering plus 60 days of prepaid interest, were deposited into escrow, where the funds remained until all the escrow releaseconditions were satisfied, specifically the closing of the acquisition of Hibernia Networks ("Hibernia"). Had the acquisition agreement been terminated, thefunds in escrow would have been returned to the investors of the Notes plus accrued and unpaid interest up to the date of release, with any remaining balancefrom prepaid interest returned to the Company. The Company has recognized the proceeds from the private offering and associated prepaid interest asrestricted cash and cash equivalents in its consolidated financial statements. See Note 6 - Debt for further details. Accounts Receivable, Net Accounts receivable balances are stated at amounts due from the customer net of an allowance for doubtful accounts. Credit extended is based on anevaluation of the customer’s financial condition and is granted to qualified customers on an unsecured basis. The Company, pursuant to its standard service contracts, is entitled to impose a finance charge of a certain percentage per month with respect to allamounts that are past due. The Company’s standard terms require payment within 30 days of the date of the invoice. The Company treats invoices as past duewhen they remain unpaid, in whole or in part, beyond the payment date set forth in the applicable service contract. F - 11Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The Company determines its allowance for doubtful accounts by considering a number of factors, including the length of time trade receivables are pastdue, the customer’s payment history and current ability to pay its obligation to the Company, and the condition of the general economy. Specific reserves arealso established on a case-by-case basis by management. Credit losses have historically been within management’s expectations. Actual bad debts, whendetermined, reduce the allowance, the adequacy of which management then reassesses. The Company writes off accounts after a determination bymanagement that the amounts at issue are no longer likely to be collected, following the exercise of reasonable collection efforts, and upon management’sdetermination that the costs of pursuing collection outweighs the likelihood of recovery. The allowance for doubtful accounts was $2.7 million and $1.0million as of December 31, 2016 and 2015, respectively. Deferred CostsInstallation costs related to provisioning of communications services that the Company incurs from third-party suppliers, directly attributable andnecessary to fulfill particular service contract, and which costs would not have been incurred but for the occurrence of that service contract, are recorded asdeferred contract costs and expensed ratably over the contractual term of service in the same manner as the deferred revenue arising from that contract. Basedon historical experience, the Company believes the initial contractual term is the best estimate for the period of earnings. If any installation costs exceed theamount of corresponding deferred revenue, the excess cost is recognized in the current period.Property and Equipment Property and equipment are stated at cost, net of accumulated depreciation. Depreciation on these assets is computed on a straight-line basis over theestimated useful lives of the assets. Assets are recorded at acquired cost plus any internal labor to prepare the asset for installation to become functional.Assets and liabilities under capital leases are recorded at the lesser of the present value of the aggregate future minimum lease payments or the fair value ofthe assets under lease. Leasehold improvements and assets under capital leases are amortized over the shorter of the term of the lease, excluding optionalextensions, or the useful life. Expenditures for maintenance and repairs are expensed as incurred. Depreciable lives used by the Company for its classes ofassets are as follows: Furniture and Fixtures7 yearsNetwork Equipment5 yearsLeasehold Improvementsup to 10 yearsComputer Hardware and Software3-5 yearsThe Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets maynot be recoverable. If the carrying amount of an asset were to exceed its estimated future undiscounted cash flows, the asset would be considered to beimpaired. Impairment losses would then be measured as the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to bedisposed of, if any, are reported at the lower of the carrying amount or fair value less costs to sell.Software Capitalization Software development costs include costs to develop software to be used solely to meet the Company's internal needs. The Company capitalizesdevelopment costs related to these software applications once the preliminary project stage is complete and it is probable that the project will be completed.Subsequent additions, modifications or upgrades to internal-use software are capitalized only to the extent that they allow the software to perform a functionit previously did not perform. Software maintenance, data conversion and training costs are expensed in the period in which they are incurred. The Companycapitalized software costs of $1.5 million and $1.1 million for the years ended December 31, 2016 and 2015, respectively. Capitalized software cost was notmaterial for the year ended December 31, 2014.Goodwill and Intangible Assets Goodwill represents the excess of the purchase price over the fair value of the net identifiable assets acquired in a business combination. Goodwill isreviewed for impairment at least annually, in October, or more frequently if a triggering event occurs between impairment testing dates. The Companyoperates as a single operating segment and as a single reporting unit for the purpose of evaluating goodwill impairment. The Company's impairmentassessment begins with a qualitative assessment to determine whether it is more like than not that fair value of the reporting unit is less than its carryingvalue. The qualitative assessment includes comparing the overall financial performance of the Company against the planned results used in the lastquantitative goodwillF - 12Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.impairment test. Additionally, the Company's fair value is assessed in light of certain events and circumstances, including macroeconomic conditions,industry and market considerations, cost factors, and other relevant entity and Company specific events. The selection and assessment of qualitative factorsused to determine whether it is more likely than not that the fair value of a reporting unit exceeds the carrying value involves significant judgment andestimates. If it is determined under the qualitative assessment that it is more likely than not that the fair value of a reporting unit is less than its carrying value,then a two-step quantitative impairment test is performed. Under the first step, the estimated fair value of the Company would be compared with its carryingvalue (including goodwill). If the fair value of the Company exceeds its carrying value, step two does not need to be performed. If the estimated fair value ofthe Company is less than its carrying value, an indication of goodwill impairment exists for the Company and it would need to perform step two of theimpairment test. Under step two, an impairment loss would be recognized for any excess of the carrying amount of the Company's goodwill over the impliedfair value of that goodwill. Fair value of the Company under the two-step assessment is determined using a combination of both income and market-basedapproaches. There were no impairments identified for the years ended December 31, 2016, 2015 and 2014.Intangible assets arising from business combinations, such as acquired customer contracts and relationships, (collectively "customer relationships"), tradenames, intellectual property or know-how, are initially recorded at fair value. The Company amortizes these intangible assets over the determined useful lifewhich ranges from three to seven years. The Company reviews its intangible assets for impairment whenever events or circumstances indicate that thecarrying amount of an asset may not be fully recoverable. If the total of the expected undiscounted future cash flows is less than the carrying amount of theasset, an impairment loss is recognized for the difference between fair value and the carrying value of the asset. There were no impairments recognized for theyears ended December 31, 2016, 2015 and 2014.Business Combinations The Company includes the results of operations of the businesses that it acquires as of the respective dates of acquisition. The Company allocates the fairvalue of the purchase price of its acquisitions to the assets acquired and liabilities assumed based on their estimated fair values. The excess of the fair value ofthe purchase price over the fair values of these identifiable assets and liabilities is recorded as goodwill.Asset Purchases Periodically we acquire customer contracts that we account for as an asset purchase and record a corresponding intangible asset that is amortized over itsassumed useful life. Any excess of the fair value of the purchase price over the fair value of the identifiable assets and liabilities is allocated on a relative fairvalue basis. No goodwill is recorded in an asset acquisition. During 2016 we acquired two portfolios of customer contracts for an aggregate purchase price of$41.3 million, of which $20 million was paid in 2016 at the respective closing dates. The remaining $21.3 million will be paid in 2017. We did not have anymaterial asset purchases in 2015 or 2014, respectively.Disputed Supplier Expenses In the normal course of business, the Company identifies errors by suppliers with respect to the billing of services. The Company performs billverification procedures to ensure that errors in the Company's suppliers' billed invoices are identified and resolved. If the Company concludes that a vendorhas billed inaccurately, the Company will record a liability only for the amount that it believes is owed. As of December 31, 2016 and 2015, the Companyhad $5.8 million and $6.9 million, respectively, in disputed billings from suppliers that were not accrued because the Company does not believe it owesthem.Acquisition Earn-outs and HoldbacksAcquisition earn-outs and holdbacks represent either contingent consideration subject to fair value measurements, or fixed deferred consideration to bepaid out at some point in the future, typically on the one-year anniversary of an acquisition. Contingent consideration is remeasured to fair value at eachreporting period. The portion of the deferred consideration due within one year is recorded as a current liability until paid, and any consideration due beyondone year is recorded in other long-term liabilities.Translation of Foreign CurrenciesFor non-U.S. subsidiaries, the local currency is the functional currency for financial reporting purposes. These consolidated financial statements havebeen reported in U.S. Dollars by translating asset and liability amounts of foreign subsidiaries at the closing currency exchange rate, equity amounts athistorical rates, and the results of operations and cash flow at the average currencyF - 13Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.exchange rate prevailing during the periods reported. The net effect of such translation gains and losses are reflected in accumulated other comprehensiveloss in the stockholders' equity section of the consolidated balance sheets. Transactions denominated in foreign currencies other than a subsidiary's functional currency are recorded at the rates of exchange prevailing at the timeof the transaction. Monetary assets and liabilities denominated in foreign currencies are translated at the rate of exchange prevailing at the balance sheet date.Exchange differences arising upon settlement of a transaction are reported in the consolidated statements of operations in other expense, net.Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at themeasurement date. The Company classifies certain assets and liabilities based on the following hierarchy of fair value:Level 1:Quoted prices for identical assets or liabilities in active markets that can be assessed at the measurement date.Level 2:Inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices foridentical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observablemarket data.Level 3:Inputs reflect management's best estimate of what market participants would use in pricing the asset or liability at the measurement date. Theinputs are unobservable in the market and significant to the instrument's valuation.When determining the fair value measurements for assets and liabilities required to be recorded at fair value, management considers the principal or mostadvantageous market in which it would transact and considers risks, restrictions, or other assumptions that market participants would use when pricing theasset or liability.Concentrations of Credit RiskFinancial instruments potentially subject to concentration of credit risk consist primarily of cash and cash equivalents, restricted cash and cashequivalents, and trade accounts receivable. At times during the periods presented, the Company had funds in excess of $250,000 insured by the U.S. FederalDeposit Insurance Corporation, or in excess of similar Deposit Insurance programs outside of the United States, on deposit at various financial institutions.Management believes the Company is not exposed to significant credit risk due to the financial position of the depository institutions in which thosedeposits are held.The Company's restricted cash and cash equivalents were held in escrow for the sole purpose of funding the acquisition of Hibernia. The funds werecontractually restricted to remain in escrow until the closing of the acquisition, otherwise returned to the investors plus accrued interest. Due to the shortduration in which the funds remained in escrow, management believes the concentration of credit risk was minimal.The Company's trade accounts receivable are unsecured and geographically dispersed. No single customer's trade accounts receivable balance as ofDecember 31, 2016 and 2015, exceeded 10% of the Company's consolidated accounts receivable, net. No single customer accounted for more than 10% ofrevenue for the years ended December 31, 2016, 2015 and 2014.Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contractswith Customers (Topic 606), which amends the existing accounting standards for revenue recognition. In August 2015, the FASB issued ASU No. 2015-14,Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delays the effective date of ASU 2014-09 by one year. The FASBalso agreed to allow entities to choose to adopt the standard as of the original effective date. In March 2016, the FASB issued ASU No. 2016-08, Revenuefrom Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which clarifies theimplementation guidance on principal versus agent considerations. The guidance includes indicators to assist an entity in determining whether it controls aspecified good or service before it is transferred to the customers. The new revenue recognition standard will be effective for the Company in the first quarterof 2018, with the option to adopt it in the first quarter of 2017. The Company currently anticipates adopting the new standard effective January 1, 2018. Thenew standard also permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectivelywith the cumulative effect of initially applying the guidance recognized at the date of initial application (the modified retrospective method). While theCompany is still in the process of completing the analysis on the impact this guidance will have on its consolidated financial statements and relatedF - 14Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.disclosures, the Company is not aware of any material impact the new standard will have. The Company anticipates adopting the standard using the modifiedretrospective method. This assessment excludes the potential impact the acquisition of Hibernia Networks will have on its analysis. Refer to Note 15 -Subsequent Events.In February 2016, the FASB issued ASU 2016-02, Leases, which requires most leases (with the exception of leases with terms of less than one year) to berecognized on the balance sheet as an asset and a lease liability. Leases will be classified as an operating lease or a financing lease. Operating leases areexpensed using the straight-line method, whereas financing leases will be treated similarly to a capital lease under the current standard. The new standard willbe effective for annual and interim periods, within those fiscal years, beginning after December 15, 2018, but early adoption is permitted. The new standardmust be presented using the modified retrospective method beginning with the earliest comparative period presented. The Company is currently evaluatingthe effect of the new standard on its consolidated financial statements and related disclosures.In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based PaymentAccounting, which was issued as part of the FASB’s simplification initiative and covers such areas as (i) the recognition of excess tax benefits anddeficiencies and the classification of those excess tax benefits on the statement of cash flows, (ii) an accounting policy election for forfeitures to be estimatedor account for when incurred, (iii) the amount an employer can withhold to cover income taxes and still qualify for equity classification, and (iv) theclassification of those taxes paid on the statement of cash flows. This update is effective for annual and interim periods beginning after December 15, 2016,which will require the Company to adopt these provisions in the first quarter of 2017. This guidance will be applied either prospectively, retrospectively orusing a modified retrospective transition method, depending on the area impacted by this update. The Company does not expect the new guidance to have amaterial impact on its consolidated financial statements and related disclosures.In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments, which is intended to reduce diversity inpractice of how certain transactions are classified and presented in the statement of cash flows in accordance with ASC 230. The ASU amends or clarifiesguidance on eight specific cash flow issues, some of which include classification on debt prepayment or debt extinguishment costs, contingent considerationpayments made after a business combination, and separately identifiable cash flows and application of the predominance principle. The standard is effectivefor financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those periods. Early adoption is permitted,provided that all of the amendments are adopted in the same period. The guidance requires application using a retrospective transition method. TheCompany is currently evaluating the effect of the new standard on its consolidated financial statements and related disclosures, but the Company does notexpect the new guidance to have a material impact.In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which clarifies the presentationrequirements of restricted cash within the statement of cash flows. The changes in restricted cash and restricted cash equivalents during the period should beincluded in the beginning and ending cash and cash equivalents balance reconciliation on the statement of cash flows. When cash, cash equivalents,restricted cash or restricted cash equivalents are presented in more than one line item within the statement of financial position, an entity shall calculate atotal cash amount in a narrative or tabular format that agrees to the amount shown on the statement of cash flows. Details on the nature and amounts ofrestricted cash should also be disclosed. This guidance will be effective in the first quarter of 2018 and early adoption is permitted. The Company does notexpect the new guidance to have a material impact on its consolidated financial statements and related disclosures.In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, which clarifies thedefinition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. Thestandard introduces a screen for determining when assets acquired are not a business and clarifies that a business must include, at a minimum, an input and asubstantive process that contribute to an output to be considered a business. This standard is effective for fiscal years beginning after December 15, 2017,including interim periods within that reporting period. The Company does not expect this new guidance to have a material impact on its consolidatedfinancial statements.Other recent accounting pronouncements issued by the FASB during 2016 and through the filing date did not and are not believed by management tohave a material impact on the Company's present or historical consolidated financial statements.NOTE 3 — ACQUISITIONS Since its formation, the Company has consummated a number of transactions accounted for as business combinations. The acquisitions were executed aspart of the Company’s business strategy of expanding through acquisitions. The acquisitions of these businesses, which are in addition to periodic purchasesof customer contracts, have allowed the Company to increase the scale at which it operates, which in turn affords the Company the ability to increase itsoperating leverage, extend its network and broaden its customer base.F - 15Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The accompanying consolidated financial statements include the operations of the acquired entities from their respective acquisition dates. All of theacquisitions noted below have been accounted for as a business combination. Accordingly, consideration paid by the Company to complete the acquisitionsis initially allocated to the respective assets and liabilities based upon their estimated fair values as of the date of completion of the acquisition. The recordedamounts for acquired assets and liabilities assumed are provisional and subject to change during the measurement period, which is 12 months from the date ofacquisition.The following is a list of material acquisitions the Company completed during 2016, 2015 and 2014, respectively.Acquisitions Completed During 2016Telnes BroadbandOn February 4, 2016, the Company completed the acquisition of Telnes Broadband ("Telnes"). The Company paid $17.5 million, composed of $15.5million in cash and 178,202 unregistered shares of the Company's common stock valued at $2.0 million. $1.8 million of the cash consideration was deferredfor one year subject to reduction for any indemnification claims made by the Company prior to such date. The Company incurred $0.9 million in exit costsassociated with the acquisition for the year ended December 31, 2016. The purchase price allocation was finalized as of September 30, 2016. The acquisitionwas considered an asset purchase for tax purposes.Acquisitions Completed During 2015One Source Networks Inc.On October 22, 2015, the Company acquired One Source Networks Inc. ("One Source"). The Company paid $169.3 million of cash and issued 185,946unregistered shares of the Company's common stock valued at $2.3 million. The Company also issued 289,055 unregistered shares of its common stock tocertain One Source employees as compensation for continuous employment. Share-based compensation of $3.6 million has been amortized ratably over an18 month service period. The net working capital was finalized in 2016 for additional consideration of $0.4 million. The Company incurred $4.9 million inexit costs associated with the acquisition of One Source for the year ended December 31, 2015. The acquisition was considered a stock purchase for taxpurposes.MegaPath CorporationOn April 1, 2015, the Company acquired MegaPath Corporation ("MegaPath"). The Company paid $141.4 million in cash (exclusive of the assumptionof $3.4 million in capital leases) and issued 610,843 unregistered shares of the Company’s common stock valued at $7.5 million. In April 2016, the Companyalso settled a dispute related to closing date working capital with MegaPath in 2016, resulting in an increase to total consideration and goodwill of $4.1million. $10.0 million of the initial cash consideration was deferred for one year, subject to reduction for any indemnification claims made by the Companyprior to such date. The Company incurred $7.7 million in exit costs associated with the acquisition of MegaPath for the year ended December 31, 2015. Theacquisition was considered an asset purchase for tax purposes.Acquisitions Completed During 2014UNSiOn October 1, 2014, the Company acquired United Networks Services, Inc. ("UNSi"). The Company paid $32.5 million in cash and issued 231,539unregistered shares of the Company's common stock valued at $2.9 million. $2.6 million of the purchase price was deferred for one year, subject to reductionfor any indemnification claims made by the Company prior to such date. $1.0 million of this holdback was paid in 2016 with the remaining $1.6 millionpending resolution of a dispute. The Company incurred $6.1 million in exit costs associated with the acquisition of UNSi for the year ended December 31,2014. The acquisition was considered a stock purchase for tax purposes.Acquisition Method Accounting EstimatesThe Company initially recognizes the assets and liabilities acquired from the aforementioned acquisitions based on its preliminary estimates of theiracquisition date fair values. As additional information becomes known regarding the acquired assets and assumed liabilities, management may makeadjustments to the opening balance sheet of the acquired company up to the end of the measurement period, which is a one-year period following theacquisition date. The determination of the fair values of theF - 16Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.acquired assets and liabilities assumed (and the related determination of estimated lives of depreciable tangible and identifiable intangible assets) requiressignificant judgment.The table below reflects the Company's estimates of the acquisition date fair values of the assets and liabilities assumed for its acquisitions over the pastthree years (amounts in thousands): Purchase PriceTelnes One Source MegaPath UNSiCash paid at closing, incl. working capital$13,751 $169,305 $131,397 $29,978Deferred cash consideration(1)1,800 — 10,000 2,568Common stock1,995 2,345 7,500 2,884Purchase consideration$17,546 $171,650 $148,897 $35,430 Purchase Price Allocation Assets acquired: Current assets$889 $10,957 $15,137 $4,292Property, plant and equipment996 2,072 16,565 8,181Other assets17 — — —Intangible assets - customer lists(2)10,951 63,590 72,162 13,960Intangible assets - intellectual property(2)— 17,379 — —Intangible assets - tradename(2)213 — — —Deferred tax asset— — 5,245 1,409Goodwill5,120 115,471 60,566 23,640Total assets acquired18,186 209,469 169,675 51,482 Liabilities assumed: Current liabilities(640) (7,170) (18,883) (16,052)Capital leases, long-term portion— — (1,895) —Deferred tax liability— (30,649) — —Total liabilities assumed(640) (37,819) (20,778) (16,052) Net assets acquired$17,546 $171,650 $148,897 $35,430(1)The deferred consideration for MegaPath and $1.0 million of the deferred consideration for UNSi was paid in 2016. The deferred consideration for Telnes was paid in February2017.(2)The weighted average amortization period of intangible assets acquired during 2016 was 3.6 years for customer lists, 1.4 years for non-compete agreements, 1.6 years fortrademark, and 3.6 years in total, as of December 31, 2016.Transaction CostsTransaction costs describe the broad category of costs the Company incurs in connection with signed and/or closed acquisitions. There are two types ofcosts that the Company accounts for:•Severance, restructuring and other exit costs•Transaction and integration costsSeverance, restructuring and other exit costs include severance and other one-time benefits for terminated employees; termination charges for leases andsupplier contracts; and other costs incurred associated with an exit activity. These costs are reported separately in the consolidated statements of operationsduring these periods. Refer to Note 10 for further information.Transaction and integration costs include expenses associated with legal, accounting, regulatory and other transition services rendered in connectionwith acquisitions, travel expense, and other non-recurring direct expenses associated with acquisitions. Transaction and integration costs are expensed asincurred in support of the integration. The Company incurred transaction and integration costs of $4.8 million and $6.1 million for the years ended December31, 2016 and 2015, respectively. The amounts wereF - 17Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.not significant in 2014. Transaction and integration costs have been included in selling, general and administrative expenses in the consolidated statementsof operations and in cash flows from operating activities in the consolidated statements of cash flows during these years.Pro forma Financial Information (Unaudited)The pro forma results presented below include the effects of the Company’s acquisitions during 2016 and 2015 as if the acquisitions occurred on January1, 2015. The pro forma net income for the years ended December 31, 2016 and 2015 includes the additional depreciation and amortization resulting from theadjustments to the value of property, plant and equipment and intangible assets resulting from acquisition accounting and adjustment to amortized revenueduring 2016 and 2015 as a result of the acquisition date valuation of assumed deferred revenue. The pro forma results also include interest expense associatedwith debt used to fund the acquisitions. The pro forma results do not include any anticipated synergies or other expected benefits of the acquisitions. Theunaudited pro forma financial information below is not necessarily indicative of either future results of operations or results that might have been achievedhad the acquisitions been consummated as of January 1, 2015 (amounts in thousands, except per share and share data). Year Ended December 31, 2016 2015 Revenue$523,371 $481,028Net income$5,512 $11,531 Net income per share: Basic$0.15 $0.33 Diluted$0.15 $0.32 Basic37,072,217 35,151,486 Diluted37,585,469 35,979,597NOTE 4 — GOODWILL AND INTANGIBLE ASSETS The goodwill balance was $280.6 million and $271.0 million as of December 31, 2016 and 2015, respectively. Additionally, the Company's intangibleasset balance was $193.9 million and $182.2 million as of December 31, 2016 and 2015, respectively. The additions to both goodwill and intangible assetsduring the year ended December 31, 2016 relate to the acquisition of Telnes, the purchase of certain customer contracts, purchase price allocation refinementfor the One Source acquisition, and the working capital settlement with MegaPath (see Note 3 - Acquisitions). Further additions to intangible assets duringthe year ended December 31, 2016 relate to the asset purchase of customer contracts totaling $41.3 million, of which $20.0 million was paid at closing of therespective transactions and the remaining $21.3 million will be paid in 2017.The changes in the carrying amount of goodwill for the years ended December 31, 2016 and 2015 were as follows (amounts in thousands): Telnes One Source MegaPath UNSi PriorAcquisitions TotalBalance, December 31, 2014$— $— $— $23,640 $69,043 $92,683 Purchase Price Allocation— 115,471 60,566 — — 176,037 PPA adjustment— — — 2,236 — 2,236Balance, December 31, 2015— 115,471 60,566 25,876 69,043 270,956 Purchase Price Allocation5,120 — — — — 5,120 PPA adjustment— 394 4,101 — 22 4,517Balance, December 31, 2016$5,120 $115,865 $64,667 $25,876 $69,065 $280,593 F - 18Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The following tables summarize the Company’s intangible assets as of December 31, 2016 and 2015 (amounts in thousands): December 31, 2016 AmortizationPeriod Gross AssetCost AccumulatedAmortization Net BookValueCustomer relationships 3-7 years $267,755 $91,136 $176,619Non-compete agreements 3-5 years 4,572 4,420 152Point-to-point FCC license fees 3 years 1,695 1,268 427Intellectual property10 years 17,379 2,076 15,303Trade name 3 years 3,092 1,657 1,435 $294,493 $100,557 $193,936 December 31, 2015 AmortizationPeriod Gross AssetCost AccumulatedAmortization Net BookValueCustomer relationships 3-7 years $215,802 $54,041 $161,761Non-compete agreements 3-5 years 4,331 4,305 26Point-to-point FCC license fees 3 years 1,695 701 994Intellectual property10 years 17,379 336 17,043Trade name 3 years 2,079 519 1,560Trade name (indefinite-lived)(1)N/A 800 — 800 $242,086 $59,902 $182,184(1)Subsequent to performing its annual impairment test of the trade name on October 1, 2016, where no impairment was identified, the Company concluded that the trade nameshould be deemed a definite-lived intangible asset with an estimated useful life of three years, to be amortized prospectively as of October 1, 2016.Amortization expense was $40.7 million, $26.0 million and $13.8 million for the years ended December 31, 2016, 2015 and 2014, respectively.Estimated amortization expense related to intangible assets subject to amortization at December 31, 2016 in each of the years subsequent toDecember 31, 2016 is as follows (amounts in thousands):2017$43,202201836,884201932,016202028,989202127,4422022 and beyond25,403Total$193,936F - 19Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.NOTE 5 — PROPERTY AND EQUIPMENT The following table summarizes the Company’s property and equipment at December 31, 2016 and 2015 (amounts in thousands): 2016 2015Network equipment$116,187 $70,808Computer hardware and software15,606 9,613Leasehold improvements4,371 3,113Furniture and fixtures950 838Property and equipment, gross137,114 84,372Less accumulated depreciation(93,745) (45,549)Property and equipment, net$43,369 $38,823Certain property, plant and equipment, primarily network equipment, is subject to capital lease in the amount of $3.2 million and $3.5 million as ofDecember 31, 2016 and 2015, respectively, less accumulated depreciation of $2.0 million and $1.1 million as of December 31, 2016 and 2015, respectively.Depreciation expense associated with property and equipment was $22.1 million, $20.7 million and $11.1 million for the years ended December 31,2016, 2015 and 2014, respectively.NOTE 6 — DEBT As of December 31, 2016 and 2015, long-term debt was as follows (amounts in thousands): 2016 2015 Term loan$425,775 $400,0007.875% Senior Note300,000 —Revolving line of credit facility20,000 5,000Total debt obligations745,775 405,000Unamortized debt issuance costs(9,310) (10,938)Unamortized original issuance discount(6,957) (7,819)Carrying value of debt729,508 386,243Less current portion(4,300) (4,000) $725,208 $382,243October 2015 Credit AgreementOn October 22, 2015, the Company entered into a credit agreement (the "October 2015 Credit Agreement") that provided for a $400.0 million term loanfacility and a $50.0 million revolving line of credit facility (which includes a $15.0 million letter of credit facility and a $10.0 million swingline facility). The term loan facility was issued at a discount of $8.0 million. Approximately $0.5 million of the revolving line of credit is currently utilized foroutstanding letters of credit relating to the Company’s real estate lease obligations. As of December 31, 2016, the Company had drawn $20.0 million underthe revolving line of credit and had $29.5 million of borrowing capacity available.On May 3, 2016, the Company entered into an incremental term loan agreement, which increased outstanding term loans by $30.0 million, the proceedsof which were used to repay the outstanding revolving loans.On June 28, 2016, the Company entered into Amendment No. 1 (the "Repricing Amendment") to the October 2015 Credit Agreement. The RepricingAmendment, among other things, reduced the applicable rate for term loans to LIBOR plus 4.75% (subject to a LIBOR floor of 1.00%) and reduced theapplicable rate for revolving loans to LIBOR plus 4.25% (with no LIBORF - 20Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.floor). The Repricing Amendment also included a "soft call" prepayment penalty of 1.0% through December 28, 2016 for certain prepayments, refinancings,and amendments where the primary purpose is to further reduce the applicable rate.As of December 31, 2016, the maturity date of the term loan facility was October 22, 2022 and the maturity date of the revolving line of credit wasOctober 22, 2020. The aggregate contractual maturities of long-term debt (excluding unamortized discounts and unamortized debt issuance costs) were asfollows at December 31, 2016 (amounts in thousands): Total Debt2017$4,30020184,30020194,300202024,30020214,3002022404,275Total$445,775The Company may prepay loans under the October 2015 Credit Agreement at any time, subject to certain notice requirements and LIBOR breakagecosts.The effective interest rate on outstanding debt at December 31, 2016 and 2015 was 5.76% and 6.24% respectively.The October 2015 Credit Agreement contains customary financial and operating covenants, including among others a consolidated net secured leverageratio and covenants restricting the incurrence of debt, imposition of liens, the payment of dividends and entering into affiliate transactions. The October 2015Credit Agreement also contains customary events of default, including among others nonpayment of principal or interest, material inaccuracy ofrepresentations and failure to comply with covenants. If an event of default occurs and is continuing under the October 2015 Credit Agreement, the entireoutstanding balance may become immediately due and payable.In addition, the Company must comply with a Consolidated Net Secured Leverage Ratio covenant and is restricted from permitting the Consolidated NetSecured Leverage Ratio to be greater than the maximum ratio specified below during the period opposite such maximum ratio. The Company was incompliance with all financial covenants under the October 2015 Credit Agreement as of December 31, 2016.The Company's obligations under the October 2015 Credit Agreement are guaranteed by certain of its subsidiaries and secured by substantially all of itstangible and intangible assets.7.875% Senior NotesOn December 22, 2016, in connection with the pending acquisition of Hibernia Networks, GTT Escrow Corporation (the "Escrow Issuer") completed aprivate offering of $300.0 million aggregate principal amount 7.875% senior unsecured notes (the "Notes") due in 2024. The Escrow Issuer is the Company'swholly owned subsidiary and was created solely for the purpose of issuing the Notes.The proceeds of the offer were deposited into escrow, where the funds remained until the escrow release conditions were satisfied, most notably theclosing of the acquisition of Hibernia. Had the acquisition agreement been terminated, the funds in escrow would have been released and returned to theinvestors of the Notes, plus accrued and unpaid interest up to the date of release. Accordingly, the Company has recognized the proceeds from the offer asRestricted Cash in its consolidated financial statements. The notes are not guaranteed until the release of the escrow, but once released, the notes will be fullyand unconditionally guaranteed, jointly and severally, on a senior unsecured basis by each of the Company's subsidiaries that guarantee the Company's newcredit agreement.In addition, in conjunction with the acquisition of Hibernia, the Company entered into a new credit agreement (the "2017 Credit Agreement") to fund theremaining portion of the purchase price. Refer to Note 15 - Subsequent Events for further details.F - 21Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Debt Issuance CostsIn connection with the October 2015 Credit Agreement, the Company incurred debt issuance costs of $8.6 million (net of extinguishments). These costsare in addition to $2.6 million of debt issuance costs that were carried over from the prior term loan facility that qualified as a modification.In June 2016, the Company accounted for the Repricing Amendment as a modification of debt, whereby the Company incurred an additional $0.8million of debt issuance costs that were deferred and recorded as an offset to Long-Term Debt in the consolidated balance sheets. The Company alsoaccelerated $1.6 million of prior deferred debt issuance cost, which was recorded as a Loss on Debt Extinguishment in the consolidated statement ofoperations. In connection with the Notes offering, we incurred debt issuance costs of $0.5 million as of December 31, 2016. The deferred costs associated withthe Notes will begin amortizing in the first quarter of 2017.Debt issuance costs are amortized to interest expense over the respective term of the underlying debt instruments using the effective interest method,unless extinguished earlier, at which time the applicable remaining unamortized costs will be immediately expensed.The unamortized balance of debt issuance costs as of December 31, 2016 and 2015 was $9.3 million and $10.9 million, respectively.The amortization of debt issuance costs is included on the consolidated statements of cash flows within the caption “Amortization of debt issuancecosts” along with the amortization of the discount on the Company’s indebtedness. Interest expense associated with the amortization of debt issuance costswas $1.5 million for the year ended December 31, 2016 and $1.0 million for each of the years ended December 31, 2015 and 2014.Debt issuance costs are presented in the consolidated balance sheets as a reduction to "Long-term debt, non-current".Previous Debt AgreementsApril 2015 Credit AgreementOn April 1, 2015, the Company entered into the April 2015 Credit Agreement, which amended the August 2014 Credit Agreement and provided for aterm loan facility of $230.0 million, a revolving line of credit facility of $25.0 million, and an uncommitted incremental credit facility of $50.0 million interm loans and/or revolving credit commitments. The interest rate on borrowings under the term loan facility was LIBOR plus a 4.50% spread. The interestrate on borrowings under the revolving credit facility was subject to a leveraged based pricing grid. The maturity date of the loans was March 31, 2020. Theproceeds were used to fund the MegaPath acquisition and repay all outstanding balances under the Company's prior credit agreement. The April 2015 CreditAgreement was extinguished as a result of the refinancing transaction in connection with the October 2015 Credit Agreement. August 2014 Credit AgreementOn August 6, 2014 the Company entered into the August 2014 Credit Agreement, which included amendments to previously existing debt. Theagreement provided for a term loan facility of $110.0 million, a revolving line of credit facility of $15.0 million, an available $15.0 million delayed drawterm loan, and an available uncommitted $30.0 million incremental term loan. The interest rate on borrowings under the term loan facility consisted ofLIBOR plus an applicable spread subject to a leveraged based pricing grid. The maturity date of the loans was August 6, 2019. The August 2014 CreditAgreement was extinguished as a result of the refinancing transaction in connection with the April 2015 Credit Agreement. NOTE 7 — ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES The following table summarizes the Company’s accrued expenses and other current liabilities as of December 31, 2016 and 2015 (amounts inthousands):F - 22Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. 2016 2015Accrued compensation and benefits$10,035 $9,465Accrued selling, general and administrative4,534 2,701Accrued carrier costs13,543 21,637Accrued restructuring3,247 6,833Accrued other5,529 2,479 $36,888 $43,115NOTE 8 — FAIR VALUE MEASUREMENTS The carrying value of the Company's long-term debt, inclusive of $20 million revolving line of credit, net of unamortized debt issuance costs andunamortized original issuance discount, was $729.5 million and $386.2 million as of December 31, 2016 and 2015, respectively. Based on trading activity ofthe Company's specific debt, the fair value of the Company's long-term debt as of December 31, 2016 and 2015 was estimated to approximate its carryingvalue. The Company's fair value estimates of the long-term debt were based on Level 1 inputs; quoted prices for identical instruments in active markets.From time to time, the Company has issued contingent consideration, or an earn-out, to selling shareholders of acquired companies. Historically, theearn-out has taken the form of Company-issued common stock or cash consideration contingent on the performance of the entity the Company acquired. TheCompany considers the valuation of the earn-outs as a Level 3 liability based on unobservable inputs. For issuances of Company common stock, theCompany considers this comparable to a stock option and measures the fair value using the Black-Scholes pricing model. During the year endedDecember 31, 2016, there were no share-based earn-outs entered into or requiring valuation. The earn-out liability in 2015 relates to business acquisitions in which the sellers received a cash payout based upon the performance of the entity theCompany acquired.The following table presents the liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of thefair value hierarchy as of December 31, 2016 and 2015, respectively (amounts in thousands):Acquisition Earn-outsBalance, December 31, 2014$3,374Paid in cash(3,729)Change in fair value880Balance, December 31, 2015525Paid in cash(525)Balance, December 31, 2016$—Assets and liabilities measured at fair value on a non-recurring basis include goodwill, tangible assets, and intangible assets. Such assets are reviewedquarterly for impairment indicators. If a triggering event has occurred, the assets are remeasured when the estimated fair value of the corresponding assetgroup is less than the carrying value. The fair value measurements, in such instances, are based on significant unobservable inputs (Level 3). There were nogoodwill or intangible asset impairments recorded during the years ended December 31, 2016 and 2015. NOTE 9 — INCOME TAXES The components of income (loss) before income taxes for the years ended December 31, 2016, 2015 and 2014 were as follows (amounts in thousands): 2016 2015 2014Domestic$11,459 $(12,318) $(25,355)Foreign(2,271) (2,509) 4,459Total$9,188 $(14,827) $(20,896)F - 23Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The components of the provision for income tax (benefit) expense for the years ended December 31, 2016, 2015 and 2014 were as follows (amounts inthousands): 2016 2015 2014Current: Federal$456 $77 $—State(35) — 83Foreign1,298 (3,708) 1,215Total current1,719 (3,631) 1,298Deferred: Federal2,381 (25,347) 852State745 (3,783) (459)Foreign(917) (1,370) 392Total deferred2,209 (30,500) 785Income tax (benefit) expense$3,928 $(34,131) $2,083 The following is a reconciliation of the U.S. federal statutory income taxes to the amounts reported in the financial statements for the years endedDecember 31, 2016, 2015 and 2014 (amounts in thousands): 2016 2015 2014U.S. federal statutory income tax$3,216 $(5,188) $(7,233)Permanent items(184) 733 575State taxes, net of federal benefit417 (533) 89Foreign tax rate differential6 (34) (421)Warrant extinguishment— — 5,743Change in valuation allowance— (23,450) 3,118Unrecognized tax positions— (2,167) 316Other473 (3,492) (104)Total income tax (benefit) expense$3,928 $(34,131) $2,083 The components of the Company's deferred tax assets and liabilities at December 31, 2016 and 2015 were as follows (amounts in thousands): 2016 2015Deferred tax assets: Net operating loss carryforwards$20,280 $29,607Capital loss and trade deficit carryforwards980 677Reserves and allowances697 1,831Share-based compensation3,742 2,019Other2,238 1,640Total deferred tax assets before valuation allowance27,937 35,774Less: Valuation allowance(284) (305)Total deferred tax assets27,653 35,469Deferred tax liabilities: Intangible assets and goodwill(17,724) (29,193)Property and equipment(4,162) 1,526Other(606) (432)Total deferred tax liabilities(22,492) (28,099)Net deferred tax assets(1)$5,161 $7,370(1) Included as a component of Other long-term assets on the consolidated balance sheets.F - 24Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.In accordance with ASU No. 2015-17, at December 31, 2016 all deferred tax assets and liabilities were presented as noncurrent. No prior periods wereadjusted retrospectively.As of December 31, 2016, the Company had $71.7 million of U.S. federal net operating loss ("NOL") carryforwards net of limitations under Section 382.Approximately $27.8 million of the NOL carryforwards have not been recognized as they relate to "windfall" tax benefits associated with share-basedcompensation. The Company's U.S. federal NOL carryforwards, if not utilized to reduce taxable income in future years, will expire between 2020 and 2035.As of December 31, 2016, the Company had tax-effected state NOL carryforwards of approximately $3.2 million, which are subject to limitations andhave various expirations through 2035. Approximately $1.5 million of the tax-effected state NOL carryforwards have not been recognized as they related to"windfall" benefits associated with share-based compensation.As of December 31, 2016, the Company had NOL carryforwards in the U.K. of $14.5 million, which have an indefinite carry forward period.Management believes it is more likely than not that it will utilize its net deferred tax assets, with the exception of $0.3 million foreign deferred tax assets.Accounting for Uncertainty in Income TaxesThe Company had unrecognized tax benefits of $0.0 million as of December 31, 2016 and 2015, and $2.2 million as of December 31, 2014. TheCompany recognizes interest and penalties related to uncertain tax positions in income tax expense. Changes in unrecognized tax benefits are set forth below(amounts in thousands): 2016 2015 2014Balance, January 1$— $2,167 $1,851Changes for tax positions of prior years— (1,849) —Increases for tax positions related to the current year— — 342Settlements and lapsing of statutes of limitations— (318) (26)Balance, December 31$— $— $2,167The Company files income tax returns in U.S. federal, state and foreign jurisdictions. The Company is no longer subject to U.S. federal and state incometax examinations for years prior to 2013 with the exception of the federal and state tax returns of certain acquired entities for which net operating losses areavailable for utilization. NOTE 10 — RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMSThe Company incurred severance, restructuring and other exit costs associated with the acquisitions of Telnes, One Source, MegaPath and UNSi. Thesecosts include employee severance costs, termination costs associated with facility leases and network agreements, and other exit costs directly related to theexit activities associated with the acquisitions. Transaction and integration costs are not included in exit costs, but are recorded as a component of selling,general and administrative expense.During the year ended December 31, 2016, the Company incurred $0.9 million in charges associated with the acquisition of Telnes offset by $0.1 millionof adjustments from prior acquisitions. The Company paid $2.7 million in employee termination benefits consisting of $0.8 million for Telnes, $1.1 millionfor One Source and $0.8 million for MegaPath. The Company paid $0.6 million in lease termination costs consisting of $0.5 million related to the MegaPathacquisition and $0.1 million related to the One Source acquisition. Payments made for other contract terminations cost of $1.0 million were primarily relatedto the acquisition of MegaPath. The exit costs recorded and paid relating to the acquisitions mentioned above are summarized as follows for the year ended December 31, 2016 (amountsin thousands):F - 25Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Balance, December 31,2015 Charges andAdjustments Payments Balance, December 31,2016Employee Termination Benefits$1,903 $870 $(2,731) $42Contract Terminations: Lease terminations1,503 — (644) 859 Other contract terminations3,427 (102) (979) 2,346 $6,833 $768 $(4,354) $3,247During the year ended December 31, 2015, the Company incurred $12.7 million in exit costs associated with the acquisitions, consisting of $4.9 millionfor One Source and $7.7 million for MegaPath. No additional exit costs were incurred for the acquisition of UNSi which occurred in 2014. The Company paid$6.0 million in employee termination benefits consisting of $1.2 million for One Source, $4.1 million for MegaPath and the remainder for UNSi. TheCompany also paid $1.4 million in other contract termination costs consisting of $1.0 million for MegaPath and $0.4 million for UNSi.The exit costs recorded and paid are summarized as follows for the year ended December 31, 2015 (amounts in thousands): Balance, December 31,2014 Charges andAdjustments Payments Balance, December 31,2015Employee Termination Benefits$778 $7,159 $(6,034) $1,903Contract Terminations: Lease terminations194 1,796 (487) 1,503 Other contract terminations1,130 3,729 (1,432) 3,427 $2,102 $12,684 $(7,953) $6,833 During the year ended December 31, 2014, the Company incurred $9.4 million in exit costs, consisting of $6.1 million associated with the UNSiacquisition, and a $3.3 million for litigation settlement. The Company paid $4.8 million in employee termination benefits, lease terminations, and othercontract terminations, related to the acquisition of UNSi.NOTE 11 — SHARE-BASED COMPENSATIONShare-Based Compensation Plan The Company grants share-based equity awards, including stock options and restricted stock, pursuant to three plans in effect as of December 31, 2016the 2006 Plan adopted in October 2006, the 2011 Plan adopted in June 2011 and the 2015 Plan adopted in June 2015 (collectively referred to as the "GTTStock Plan"). The GTT Stock Plan is limited to an aggregate 9,500,000 shares of which 7,652,671 have been issued and are outstanding as of December 31,2016.The GTT Stock Plan permits the granting of time-based stock options, time-based restricted stock and performance-based restricted stock to employeesand consultants of the Company, and non-employee directors of the Company.Time-based options granted under the GTT Stock Plan have an exercise price of at least 100% of the fair market value of the underlying stock on thegrant date and expire no later than 10 years from the grant date. The stock options generally vest over four years with 25% of the options becomingexercisable one year from the date of grant and the remaining 75% annually or quarterly over the following three years.Time-based restricted stock granted under the GTT Stock Plan is granted at the closing stock price on the day of grant. Restricted stock generally vestsover four years with 25% of the shares becoming unrestricted one year from the date of grant and the remaining 75% annually or quarterly over the followingthree years.The Company uses the Black-Scholes option-pricing model to determine the fair value of its option awards at the time of grant. The fair value of therestricted stock awards was calculated using the value of GTT common stock on the grant date and is being amortized over the vesting periods in which therestrictions lapse.Performance-based restricted stock is granted under the GTT Stock Plan subject to the achievement of certain performance measures. Once achievementof these performance measures becomes probable, the Company starts to expense the fair value ofF - 26Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.the grant over the vesting period. The performance-based restricted stock is valued at the closing price on the day of grant. The performance grant will vestannually or quarterly over the vesting period once achievement of the performance measure has been met and approved by the Compensation Committee.The Compensation Committee of the Board of Directors, as administrator of the Plan, has the discretion to authorize a different vesting schedule for anyawards.The following table summarizes the share-based compensation expense recognized as a selling, general and administrative expense in the consolidatedstatements of operations (amounts in thousands): Year Ended December 31, 2016 2015 2014Time-based stock options$1,790 $1,591 $883Time-based restricted stock(1)6,451 5,052 1,535Performance-based restricted stock7,248 1,233 —ESPP286 — —Total$15,775 $7,876 $2,418(1) Includes $2.2 million and $0.7 million for the years ended December 31, 2016 and 2015, respectively, related to the shares issued to the former employees of One Source forcontinued employment.The following table summarizes the unrecognized compensation cost and the weighted average period over which the cost is expected to be amortized(amounts in thousands): December 31, 2016 Unrecognized Compensation Cost Weighted Average Remaining Period to beRecognized (Yrs)Stock Options$3,205 1.67Restricted Stock14,032 1.83Performance Awards8,101 1.39Total$25,338 1.67 Time-Based Stock OptionsThe Company uses the Black-Scholes option-pricing model method to calculate the fair value of the stock options. The use of option valuation modelsrequires the input by management of certain assumptions, including the expected stock price volatility, the expected life of the option term and the forfeiturerate. These assumptions are utilized by the Company in determining the estimated fair value of the stock options. Assumptions used in the calculation of thestock option expense were as follows: 2016 2015 2014Expected volatility42.5% - 48.8% 44.3% - 64.6% 62.2% - 63.2%Risk free interest rate1.0% - 1.9% 1.3% - 1.9% 1.7% - 2.0%Expected term (in years)6.11 6.25 6.25Dividend yield0.0% 0.0% 0.0%Forfeiture rate4.0% 4.0% 4.0% The fair value of each stock option grant is estimated as of the date of grant. F - 27Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Stock option activity during the years ended December 31, 2016, 2015 and 2014 were as follows: Options Weighted AverageExercise Price WeightedAverageFair Value Weighted AverageRemainingContractualLife (Years) AggregateIntrinsicValueBalance, December 31, 2013 1,697,500 $2.09 $0.47 Granted 459,450 12.44 7.35 Exercised (633,754) 1.67 1.10 Forfeited or canceled (159,736) 4.98 2.85 Balance, December 31, 2014 1,363,460 5.41 3.17 Granted 344,117 17.91 8.64 Exercised (259,121) 2.35 1.40 Forfeited or canceled (72,079) 6.50 2.75 Balance, December 31, 2015 1,376,377 9.05 4.89 Granted 158,958 13.76 6.10 Exercised (307,286) 3.83 2.29 Forfeited or canceled (64,141) 13.31 6.47 Balance, December 31, 2016 1,163,908 $10.84 $5.66 7.26 $20,847,944Exercisable 645,936 $8.17 $4.51 6.51 $13,292,491 The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between the Company's closing stock price onthe last day of the year and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders hadall option holders exercised their options on December 31, 2016. The amount of aggregate intrinsic value will change based on the fair market value of theCompany's stock.As of December 31, 2016, the total vested portion of share-based compensation expense for time-based stock options was $5.6 million, the unamortizedcompensation cost related to unvested stock options was $3.2 million, and the weighted average period over which this cost is expected to be recognized is1.7 years.Time-Based Restricted Stock Time-based restricted stock activity during the years ended December 31, 2016, 2015 and 2014 was as follows: Shares WeightedAverageFairValueUnvested balance, December 31, 2013789,938 $9.58Granted406,902 11.94Forfeited(142,503) 3.49Vested(375,262) 10.71Unvested balance, December 31, 2014679,075 11.65Granted550,027 18.46Forfeited(18,220) 10.96Vested(331,250) 19.20Unvested balance, December 31, 2015879,632 13.08Granted638,362 14.66Forfeited(83,293) 16.85Vested(385,731) 18.93Unvested balance, December 31, 20161,048,970 $11.59 F - 28Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.The fair value of time-based restricted stock awarded totaled $9.4 million, $10.9 million and $4.4 million for the years ended December 31, 2016, 2015and 2014, respectively. The fair value of these awards was calculated using the value of GTT common stock on the grant date and is being amortized over therespective vesting periods. As of December 31, 2016, unamortized compensation cost related to unvested restricted stock was $14.0 million and the weightedaverage period over which this cost will be recognized is 1.7 years.Performance-Based Restricted StockPerformance-based restricted stock activity during the years ended December 31, 2016, 2015 and 2014 was as follows: Shares WeightedAverageFairValueUnvested balance, December 31, 2013187,000 $5.82Granted610,000 12.82Forfeited— —Vested(30,500) 12.98Unvested balance, December 31, 2014766,500 11.11Granted935,000 19.18Forfeited— —Vested(303,373) 20.03Unvested balance, December 31, 20151,398,127 14.57Granted— —Forfeited(19,687) 17.69Vested(450,004) 18.36Unvested balance, December 31, 2016928,436 $12.66The Company granted $8.5 million of restricted stock during 2014 and early 2015 contingent upon the achievement of certain performance criteria (the"2014 Performance Awards"). The fair value of the 2014 Performance Awards was calculated using the value of GTT common stock on the grant date. TheCompany started recognizing stock-based compensation expense for these grants when the achievement of the performance criteria became probable, whichwas in the third quarter of 2015. The 2014 Performance Awards started vesting in the fourth quarter of 2015 when the performance criteria were met, and theywill continue to vest ratably through the third quarter of 2017. As of December 31, 2016, unamortized compensation cost related to the unvested 2014Performance Awards was $0.7 million.In November 2015, the Company granted $16.9 million of restricted stock, contingent upon the achievement of certain performance criteria (the "2015Performance Awards"). The fair value of the 2015 Performance Awards was calculated using the value of GTT common stock on the grant date. Uponannouncement of the Hibernia Networks acquisition in November 2016 (see Note 15 - Subsequent Events), the achievement of two of the four performancecriteria became probable. Accordingly, the Company recognized share-based compensation expense of $1.1 million for the year ended December 31, 2016.Of the $15.8 million that remains unamortized as of December 31, 2016, $8.4 million relates to the two performance criteria that have not been met.Employee Stock Purchase Plan The Company has an Employee Stock Purchase Plan ("ESPP") that permits eligible employees to purchase common stock through payroll deductions at thelesser of the opening stock price or 85% of the closing stock price of the Company's common stock during each of the three-month offering periods. Theoffering periods generally commence on the first day and the last day of each quarter. At December 31, 2016, 417,204 shares were available for issuanceunder the ESPP. During the twelve months ended December 31, 2016, the Company has recognized $0.3 million of compensation expense related to theESPP. There was no ESPP expense in 2015 and 2014.Shares Issued in AcquisitionIn conjunction with the acquisition of One Source, the Company issued $3.6 million, or 289,055 unregistered shares, of common stock to the sellingshareholders of One Source subject to a continuing employment period of 18 months. The fair value of thisF - 29Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.issuance was calculated using the value of GTT common stock on the acquisition date less a discount for lack of marketability. The $3.6 million wasexpensed ratably over the service period of 18 months. As of December 31, 2016, unamortized compensation expense was $0.7 million which will berecognized through April 2017.NOTE 12 — DEFINED CONTRIBUTION PLAN The Company has a defined contribution retirement plan under Section 401(k) of the Internal Revenue Code ("IRC") that covers substantially all U.S.based employees. The plan allows eligible employees to contribute from 1% to 100% of their pre-tax eligible earnings, subject to defined limits. TheCompany matches 50% of an employee's voluntary contributions per pay period up to the annual maximum as defined by the IRS. Employer's matchingcontributions under the Company's plan vest at a rate of 25% for each year of employment and are fully vested after four years of employment for all currentand future contributions. During the years ended December 31, 2016, 2015 and 2014, the Company incurred 401(k) matching expense of $0.9 million, $0.6million and $0.2 million, respectively.NOTE 13 — COMMITMENTS AND CONTINGENCIES Estimated annual commitments under contractual obligations are as follows at December 31, 2016 (amounts in thousands): Network Supply Office Space Capital Leases Other(1)2017$103,770 $3,332 $1,015 $7,618201857,220 2,618 120 578201922,830 2,031 — 15420203,477 1,114 — —2021898 613 — —2022 and beyond1,552 473 — — $189,747 $10,181 $1,135 $8,350(1) Primarily consists of vendor contracts associated with network monitoring and maintenance services.Network Supply Agreements As of December 31, 2016, the Company had purchase obligations of $189.7 million associated with the telecommunications services that the Companyhas contracted to purchase from its suppliers. The Company’s supplier agreements fall into two key categories, the Company's core IP backbone and customerspecific locations (also referred to as 'last mile' locations). Supplier agreements associated with the Company's core IP backbone are typically contracted on aone-year term and do not relate to any specific underlying customer commitments. The short term duration allows the Company to take advantage offavorable pricing trends.Supplier agreements associated with the Company's customer specific locations, which represents the substantial majority of the Company's networkspending are typically contracted so the terms and conditions in both the vendor and customer contracts are substantially the same in terms of duration andcapacity. The back-to-back nature of the Company’s contracts means that its network supplier obligations are generally mirrored by its customers'commitments to purchase the services associated with those obligations.Office Space and Leases The Company is currently headquartered in McLean, Virginia and has ten offices throughout the United States, four offices in Europe and one office inHong Kong. The Company records rent expense using the straight-line method over the term of the lease agreement. Office facility rent expense was $5.5million, $4.5 million and $2.1 million, for the years ended December 31, 2016, 2015 and 2014, respectively.“Take-or-Pay” Purchase CommitmentsOne of the Company’s supplier agreements requires the Company to make minimum monthly payments regardless of whether or not the Company isutilizing enough services to satisfy the minimum (commonly referred to in the industry as “take-or-pay”F - 30Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.commitments). As of December 31, 2016, the Company no longer had any obligations under this take-or-pay commitment. As of December 31, 2015, theCompany's aggregate obligations under the take-or-pay commitment was $33.9 million.Legal Proceedings From time to time, the Company is a party to legal proceedings arising in the normal course of its business. The Company does not believe that it is aparty to any current or pending legal action that could reasonably be expected to have a material adverse effect on its financial condition or results ofoperations. NOTE 14 — FOREIGN OPERATIONSThe Company’s operations are located primarily in the United States and Europe. The Company’s financial data recognized by legal entities as follows(amounts in thousands): ITALY UK OTHER FOREIGNCOUNTRYTOTAL US TOTAL2016 Revenues by geographic area$37,670 $30,952 $1,643 $70,265 $451,423 $521,688Long-lived assets at December 3124,098 8,054 558 32,710 485,188 517,8982015 Revenues by geographic area46,565 25,565 3,456 75,586 293,664 369,250Long-lived assets at December 3129,978 9,337 1,223 40,538 451,425 491,9632014 Revenues by geographic area56,547 27,092 4,738 88,377 118,966 207,343Long-lived assets at December 3138,172 9,840 1,723 49,735 126,762 176,497NOTE 15 — SUBSEQUENT EVENTSHibernia AcquisitionOn January 9, 2017, the Company acquired 100% of Hibernia Networks. The Company paid $621.5 million, comprised of $515.0 million in cashconsideration, $14.6 million net cash acquired and 3,329,872 unregistered shares of the Company's common stock, initially valued at $75.0 million on thedate of announcement, and ultimately valued at $91.9 million at closing. The purchase price is subject to a final post-closing reconciliation for closing datecash, net working capital, transaction expenses, indebtedness, certain tax payments and prepaid customer contracts. $300.0 million of the cash considerationwas funded by proceeds from the issuance of 7.875% senior unsecured notes ("Notes"), which was funded into escrow in December 2016 (refer to Note 6 -Debt). The remainder was funded by a new credit agreement, which is discussed in more detail below.Credit AgreementIn conjunction with the closing of the Hibernia acquisition, the Company entered into a credit agreement (the "2017 Credit Agreement") that provided a$700.0 million term loan facility and a $75.0 million revolving line of credit facility (which includes a $25.0 million letter of credit facility). In addition, theCompany may request incremental term loan and/or incremental revolving loan commitments in an aggregate amount not to exceed the sum of $150.0million and an unlimited amount that is subject to pro forma compliance with certain net secured leverage ratio tests provided, however, that incrementalrevolving loan commitments may not exceed $25.0 million.The maturity date of the term loan facility is January 9, 2024 and the maturity date of the revolving loan facility is January 9, 2022. Each maturity datemay be extended per the terms of the 2017 Credit Agreement. The Company may prepay loans under the 2017 Credit Agreement at any time, subject tocertain notice requirements and LIBOR breakage costs. The principal amount of the term loan facility is payable in equal quarterly installments of $1.75million, commencing on March 31, 2017 and continuing thereafter until the maturity date, when the remaining balance of outstanding principal amount ispayable in full.F - 31Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.At the Company's election, the loans under the 2017 Credit Agreement may be made as either Base Rate Loans or Eurodollar Loans, with applicablemargins at 3.00% for Base Rate Loans and 4.00% for Eurodollar loans. The Eurodollar Loans are subject to a floor of 1.00%, and the applicable margin forrevolving loans is 2.50% for Base Rate Loans and 3.50% for Eurodollar Loans. The obligations under the Credit Agreement are secured by the substantialmajority of the tangible and intangible assets of the Company and the guarantors.The 2017 Credit Agreement does not contain a financial covenant for the term loan facility, but includes a maximum consolidated net secured leverageratio applicable only to the revolving credit facility in the event that utilization exceeds 30% of the revolving loan facility commitment. The Company isrestricted from permitting the Consolidated Net Secured Leverage Ratio to be greater than the maximum ratio as specified in the 2017 Credit Agreement.The proceeds of the term loan facility were used to finance the Hibernia Networks acquisition, refinance the Company's existing credit facility and to paycosts and expenses associated with such transactions.NOTE 16 — QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)The following tables are unaudited consolidated quarterly results of operations for the years ended December 31, 2016 and 2015. The financialinformation presented should be read in conjunction with other information included in the Company's consolidated financial statements. Quarters Ended March 31, 2016 June 30, 2016 September 30, 2016 December 31, 2016Revenue: (In thousands) Telecommunications services$124,437 $128,914 $131,851 $136,486 Operating expenses: Cost of telecommunications services66,197 68,272 68,184 71,359 Operating income8,953 9,041 12,235 10,596 Net income (loss)898 91 5,127 (856) Earnings (loss) per share: Basic$0.02 $— $0.14 $(0.02)Diluted$0.02 $— $0.14 $(0.02) Weighted average shares: Basic36,854,219 37,065,651 37,152,063 37,221,037Diluted37,455,379 37,678,120 37,785,921 37,221,037F - 32Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Quarters Ended March 31, 2015 June 30, 2015 September 30, 2015 December 31, 2015Revenue: (In thousands) Telecommunications services$62,353 $95,076 $96,996 $114,825 Operating expenses: Cost of telecommunications services37,697 51,461 53,363 61,937 Operating income (loss)2,289 (5,464) 5,449 1,427 Net income (loss) (1)1,067 (11,114) 1,762 27,589 Earnings (loss) per share: Basic$0.03 $(0.32) $0.05 $0.77Diluted$0.03 $(0.32) $0.05 $0.75 Weighted average shares: Basic33,935,481 34,835,154 34,981,104 36,060,212Diluted34,659,757 34,835,154 35,888,525 36,906,979(1) Fourth quarter net income was driven by an income tax benefit of $34.1 million, which was primarily related to the release of the Company’s valuation allowance against U.S.deferred tax assets, based on management’s conclusion that it was more likely that not that the Company would be able to utilize its U.S. net operating loss carryforwards in thefuture. Refer to Note 9 for further details.SCHEDULE IIGTT COMMUNICATIONS INC.VALUATION AND QUALIFYING ACCOUNTSActivity in the Company’s allowance accounts for the years ended December 31, 2016, 2015 and 2014 was as follows (in thousands): Allowance for Doubtful Accounts ReceivableYear Balance at Beginning ofYear Charged to Cost andExpenses Deductions Other Balance at End of Year2014 $702 $835 $(767) $108 $8782015 $878 $3,210 $(3,180) $107 $1,0152016 $1,015 $5,986 $(4,362) $17 $2,656 Deferred Tax Asset ValuationYear Balance at Beginning ofYear Charged to Cost andExpenses Deductions Other Balance at End of Year2014 $19,805 $3,112 $— $839 $23,7562015 $23,756 $— $(23,450) $(1) $3052016 $305 $— $(21) $— $284F - 33Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Exhibit 21.1Subsidiaries of GTT Communications, Inc.Name of Subsidiary State or Other Jurisdiction ofIncorporation or OrganizationGTT Americas, LLC DelawareGTT Escrow Corporation DelawareGTT Global Telecom Government Services LLC VirginiaGTT-EMEA, Ltd. United KingdomGTT Communications SRL ItalyTinet GmbH GermanySource: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Exhibit 23.1CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRMWe consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-194972) and Form S-8 (Nos. 333-210488, 333-210095,333-194530, and 333-139356) of our reports dated March 8, 2017, with respect to the consolidated financial statements and schedule of GTTCommunications, Inc. as of December 31, 2016 and 2015 and for each of the three years in the period ended December 31, 2016 and the effectiveness ofinternal control over financial reporting of GTT Communications, Inc. as of December 31, 2016 included in this Annual Report on Form 10-K for the yearended December 31, 2016./s/ CohnReznick LLPMarch 8, 2017Tysons, VirginiaSource: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results. Exhibit 31.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER I, Richard D. Calder, Jr., certify that: 1. I have reviewed this annual report on Form 10-K of GTT Communications, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; 3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects thefinancial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; 4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined inExchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for theregistrant and have: (a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, toensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,particularly during the period in which this report is being prepared; and (b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposesin accordance with generally accepted accounting principles; and (c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about theeffectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and (d) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscalquarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, theregistrant's internal control over financial reporting; 5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to theregistrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonablylikely to adversely affect the registrant's ability to record, process, summarize and report financial information; and (b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control overfinancial reporting.Date:March 8, 2017/s/ Richard D. Calder, Jr. Richard D. Calder, Jr. President and Chief Executive Officer Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Exhibit 31.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER I, Michael T. Sicoli, certify that: 1. I have reviewed this annual report on Form 10-K of GTT Communications, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; 3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects thefinancial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; 4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined inExchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for theregistrant and have: (a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensurethat material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularlyduring the period in which this report is being prepared; (b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision,to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordancewith generally accepted accounting principles; (c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectivenessof the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and (d) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscalquarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, theregistrant's internal control over financial reporting; and 5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to theregistrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): (a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likelyto adversely affect the registrant's ability to record, process, summarize and report financial information; and (b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control overfinancial reporting. Date:March 8, 2017/s/ Michael T. Sicoli Michael T. Sicoli Chief Financial Officer Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Exhibit 32.1 CERTIFICATION OFCHIEF EXECUTIVE OFFICERPURSUANT TO 18 U.S.C. SECTION 1350,AS ADOPTED PURSUANT TOSECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of GTT Communications, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2016 as filed with theSecurities and Exchange Commission on the date hereof (the “Report”), I, Richard D. Calder, Jr., Chief Executive Officer of the Company certify, pursuant to18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my best knowledge: 1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Date:March 8, 2017/s/ Richard D. Calder, Jr. Richard D. Calder, Jr. President and Chief Executive Officer Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Exhibit 32.2 CERTIFICATION OFCHIEF FINANCIAL OFFICERPURSUANT TO 18 U.S.C. SECTION 1350,AS ADOPTED PURSUANT TOSECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of GTT Communications, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2016 as filed with theSecurities and Exchange Commission on the date hereof (the “Report”), I, Michael T. Sicoli, Chief Financial Officer of the Company certify, pursuant to 18U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my best knowledge: 1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Date:March 8, 2017/s/ Michael T. Sicoli Michael T. Sicoli Chief Financial Officer Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.Source: GTT Communications, Inc., 10-K, March 08, 2017Powered by Morningstar® Document Research℠The information contained herein may not be copied, adapted or distributed and is not warranted to be accurate, complete or timely. The user assumes all risks for any damages or losses arising from any use of this information,except to the extent such damages or losses cannot be limited or excluded by applicable law. Past financial performance is no guarantee of future results.

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