WESCO International (WCC) 10-K 2015 FY Annual report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark One)

þ	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the fiscal year ended December 31, 2015

or

o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from to

Commission file number 001-14989

WESCO International, Inc.

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization)	25-1723342 (I.R.S. Employer Identification No.)
225 West Station Square Drive Suite 700 Pittsburgh, Pennsylvania (Address of principal executive offices)	15219 (Zip Code)

(412) 454-2200

(Registrant’s telephone number, including area code) 

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

Title of Class	Name of Exchange on which registered
Common Stock, par value $.01 per share	New York Stock Exchange

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: None

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

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

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

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

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

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

Large accelerated filer þ	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
		(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 Act). Yes o No þ

The registrant estimates that the aggregate market value of the voting shares held by non-affiliates of the registrant was approximately $2,969.5 million as of June 30, 2015, the last business day of the registrant’s most recently completed second fiscal quarter, based on the closing price on the New York Stock Exchange for such stock.

As of February 19, 2016, 42,198,471 shares of Common Stock, par value $.01 per share, of the registrant were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE:

Part III of this Form 10-K incorporates by reference portions of the registrant’s Proxy Statement for its 2016 Annual Meeting of Stockholders.

TABLE OF CONTENTS

	Page
PART I
Item 1. Business	1
Item 1A. Risk Factors	9
Item 1B. Unresolved Staff Comments	13
Item 2. Properties	13
Item 3. Legal Proceedings	14
Item 4. Mine Safety Disclosures	14
PART II
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	15
Item 6. Selected Financial Data	17
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 7A. Quantitative and Qualitative Disclosures About Market Risks	32
Item 8. Financial Statements and Supplementary Data	33
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	72
Item 9A. Controls and Procedures	72
Item 9B. Other Information	72
PART III
Item 10. Directors, Executive Officers and Corporate Governance	73
Item 11. Executive Compensation	73
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	73
Item 13. Certain Relationships and Related Transactions, and Director Independence	73
Item 14. Principal Accountant Fees and Services	73
PART IV
Item 15. Exhibits and Financial Statement Schedules	74
Signatures	77
EX-10.22
EX-10.23
EX-10.24
EX-21.1
EX-23.1
EX-31.1
EX-31.2
EX-32.1
EX-32.2
EX-101 INSTANCE DOCUMENT
EX-101 SCHEMA DOCUMENT
EX-101 CALCULATION LINKBASE DOCUMENT
EX-101 LABELS LINKBASE DOCUMENT
EX-101 PRESENTATION LINKBASE DOCUMENT
EX-101 DEFINITION LINKBASE DOCUMENT

PART I

Item 1. Business.

In this Annual Report onForm 10-K, “WESCO” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to WESCO and its subsidiaries.

The Company

WESCO International, Inc. (“WESCO International”), incorporated in 1993 and effectively formed in February 1994 upon acquiring a distribution business from Westinghouse Electric Corporation, is a leading North American based distributor of products and provider of advanced supply chain management and logistics services used primarily in industrial, construction, utility and commercial, institutional and government (“CIG”) markets. We are a leading provider of electrical, industrial, and communications maintenance, repair and operating (“MRO”) and original equipment manufacturers (“OEM”) products, construction materials, and advanced supply chain management and logistics services. Our primary product categories include general electrical and industrial supplies, wire, cable and conduit, data and broadband communications, power distribution equipment, lighting and lighting control systems, control and automation, motors, and safety.

We serve over 80,000 active customers globally through approximately 500 full service branches primarily located in North America, with operations in 14 additional countries and nine distribution centers located in the United States and Canada. The Company employs approximately 9,300 employees worldwide. We distribute over 1,000,000 products, grouped into six categories, from more than 25,000 suppliers utilizing a highly automated, proprietary electronic procurement and inventory replenishment system.

In addition, we offer a comprehensive portfolio of value-added capabilities, which includes supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting, limited assembly of products and system installation. Our value-added capabilities, extensive geographic reach, experienced workforce and broad product and supply chain solutions have enabled us to grow our business and establish a leading position in North America.

Industry Overview

We operate in highly fragmented markets that include thousands of small regional and locally based, privately owned competitors. According to one industry publication, in 2014, the latest year for which market share data is available, the five largest North American electrical distributors, including WESCO, accounted for approximately 31% of an estimated $100 billion-plus in electrical sales in North America. Our global account, integrated supply and OEM programs provide customers with regional, national, North American and global supply chain consolidation opportunities. The demand for these programs has grown in recent years, driven primarily by the desire of companies to reduce operating expenses by outsourcing operational and administrative functions associated with the procurement, management and utilization of MRO supplies and OEM components. We believe that significant opportunities exist for further expansion of these programs. The total potential in the United States for purchases of MRO and OEM supplies and services across all industrial distribution market segments and channels is estimated to be greater than $500 billion per an industry study.

According to a recent publication, despite weakness in commodity-driven end markets, electrical distribution industry sales grew approximately 4% this year following a similar rate last year. This expansion has been driven by the increased use of electrical products in businesses and industries, new products and technologies, the proliferation of enhanced building and safety codes, and use of the Internet. Wholesale distributors have also grown as a result of a long-term shift in procurement preferences that favor the use of distributors over direct relationships with manufacturers. It is estimated that approximately 75% of electrical products sold in the United States are delivered to the end user through the distribution channel.

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Markets and Customers

We have a large base of over 80,000 active customers across a diverse set of end markets. Our top ten customers accounted for approximately 11% of our sales in 2015. No one customer accounted for more than 2% of our sales in 2015.

The following table outlines our sales breakdown by end market:

Year Ended December 31,	2015	2014	2013
(percentages based on total sales)
Industrial	39%	42%	43%
Construction	32%	31%	32%
Utility	15%	14%	13%
Commercial, Institutional and Governmental	14%	13%	12%

Industrial. Sales to industrial customers of MRO, OEM, and construction products and services accounted for approximately 39% of our sales in 2015, compared to 42% in 2014. Industrial sales product categories include a broad range of electrical equipment and supplies as well as lubricants, pipe, valves, fittings, fasteners, cutting tools, power transmission, and safety products. In addition, OEM customers require a reliable supply of assemblies and components to incorporate into their own products as well as value-added services such as supplier consolidation, design and technical support, just-in-time supply and electronic commerce, and supply chain management.

Construction. Sales of electrical and communications products to contractors accounted for approximately 32% of our sales in 2015, compared to 31% in 2014. Customers include a wide array of contractors and engineering, procurement and construction firms for industrial, infrastructure, commercial and data and broadband communications projects. Specific applications include projects for refineries, railways, hospitals, wastewater treatment facilities, data centers, security installations, offices, and modular and mobile homes. In addition to a wide array of electrical products, we offer contractors communications products for projects related to IT/network modernization, physical security upgrades, broadband deployments, network security, and disaster recovery.

Utility. Sales to utilities and utility contractors accounted for approximately 15% of our sales in 2015, compared to 14% in 2014. Customers include large investor-owned utilities, rural electric cooperatives, municipal power authorities and contractors that serve these customers. We provide our utility customers with products and services to support the construction and maintenance of their generation, transmission and distribution systems along with an extensive range of products that meet their power plant MRO and capital projects needs. Materials management and procurement outsourcing arrangements are also important in this market, as cost pressures and deregulation have caused utility customers to seek improvements in the efficiency and effectiveness of their supply chains.

Commercial, Institutional and Governmental. Sales to CIG customers accounted for approximately 14% of our sales in 2015, compared to 13% in 2014. Customers include schools, hospitals, property management firms, retailers and federal, state and local government agencies of all types, including federal contractors.

Business Strategy

Our goal is to grow organically at a rate greater than that of our industry while making accretive acquisitions. Our organic growth strategy focuses on enhancing our sales and customer service capabilities to acquire new customers and develop new end markets, broaden our product and service offerings and expand our geographic footprint. We utilize LEAN continuous improvement initiatives on a company-wide basis to deliver operational excellence and improve productivity. We also extend our LEAN initiatives to customers to improve the efficiency and effectiveness of their operations and supply chains. In addition, we seek to generate a distinct competitive advantage through talent management and employee development processes and programs.

We have identified certain growth engines that we believe provide substantial opportunities for above-market growth, and have developed strategies to address each of these areas of opportunity. These growth engines are a combination of business models, selected end markets and product categories, as discussed below.

Grow Our Global Account Customer Relationships and Base. Our typical global account customer is a large, multi-location industrial or commercial company, a large utility, a major contractor, or a governmental or institutional customer. Our global account program is designed to provide customers with supply chain management services and cost reductions by coordinating and standardizing activity for MRO materials and OEM direct materials across their multiple locations, utilizing our broad geographic footprint and our largely integrated information technology platform. Comprehensive account plans are developed and managed at the local, national and international levels to prioritize activities, identify key performance

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measures, and track progress against objectives. We involve our preferred suppliers early in the implementation process to contribute expertise and product knowledge to accelerate program implementation and delivery of cost savings and process improvements.

We plan to continue to expand our product and service offerings to existing global account customers, and increase our reach to serve additional customer locations. We plan on expanding our customer base by capitalizing on our industry expertise and supply chain optimization capabilities.

Extend Our Position in Integrated Supply Programs. Our integrated supply programs focus on optimizing the supply chain and replacing the traditional multi-vendor, resource-intensive procurement process with a single, outsourced, automated process. Each integrated supply program employs our product and distribution expertise to reduce the number of suppliers, total procurement costs, and administrative expenses, while meeting the customers’ service needs and improving their operating controls. We believe that large customers will seek to utilize such services to consolidate and simplify their MRO and OEM supply chains.

We are expanding our position in North America as an integrated supply service provider by building upon established relationships within our large customer base and premier supplier network, and extending our services to additional customers and locations around the world. Our services are offered across all four of our end markets (industrial, construction, utility and CIG).

Expand Our Relationships with Construction Contractors. We support new construction, renovation and retrofit projects across a wide variety of vertical markets, including manufacturing, healthcare, education, enterprise data communications, telecommunications, energy and government infrastructure. We believe that significant cross selling opportunities exist for our electrical and communications products and expertise, and we plan to use our global account and integrated supply programs, LEAN initiatives and project management expertise to capitalize on new non-residential construction opportunities.

Expand Products and Services for Utilities. Our investor-owned, public power and utility contractor customers continue to focus on improving grid reliability and operating efficiency, while reducing costs. As a result, we anticipate an increase in distribution grid improvement and transmission expansion projects as well as the adoption of integrated supply programs. Accordingly, we are focused on expanding our logistical and project services and supply chain management programs to increase our scope of supply on distribution grid, generation and other energy projects, including alternative energy projects.

Investing in Industrial MRO and Safety. Our sales of industrial maintenance, repair, and operating supply (MRO) materials include a broad range of electrical and non-electrical products used in the ongoing maintenance and repair of equipment used in production processes. These products are also used for facility upkeep in manufacturing, commercial, institutional, and other operations. In addition, through two acquisitions, we have expanded our safety products, personal protection safety equipment, first aid supplies, and OSHA compliance categories to complement the industrial MRO product lines.

Expand International Operations. We seek to capitalize on existing and emerging international market opportunities through the expansion of our global product and service platforms. We follow large existing global customers into international markets, extending our procurement outsourcing, integrated supply programs and supplier relationships. Once established, we also seek to develop new business opportunities in these markets. We believe this strategy of working with well-developed customer and supplier relationships significantly reduces risk and provides the opportunity to establish profitable business. Our priorities are focused on global vertical markets including energy, mining and metals, manufacturing, and infrastructure, as well as key product categories such as communications and security.

Grow Our Communications Products Position. Over the last several years, there has been a convergence of electrical and data communications contractors. Our ability to provide both electrical and communications products and services lines as well as automation, electromechanical, non-electrical MRO, physical security and utility products has presented cross selling opportunities across WESCO. Communications products are in continual demand due to network upgrades, low voltage security investments, data center upgrades and increasing broadband and telecommunications usage.

Grow Lighting System and Sustainability Sales. Lighting applications are undergoing significant innovation, driven by energy efficiency and sustainability trends. We have expanded our sales team and marketing initiatives and increased our presence and customer base with the acquisition of Needham Electric Supply. We expect to continue to add product and service offerings to provide lighting and energy-saving solutions.

Pursue Strategic Acquisitions. In 2015, we acquired two businesses: Hill Country Electric Supply and Needham Electric Supply. Since 2010, we have made thirteen acquisitions that have helped us to extend our product and services portfolio into adjacencies such as safety equipment and lighting. Over the years, these acquisitions have also increased our customer base and have been an important source of talent.

We believe that the highly fragmented nature of the electrical and industrial distribution industry will continue to provide acquisition opportunities.

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Drive Operational Excellence. LEAN continuous improvement is a set of company-wide strategic initiatives to increase efficiency and effectiveness across the entire business enterprise, including sales, operations and administrative processes. The basic principles behind LEAN are to systematically identify and implement improvements through simplification, elimination of waste and reduction in errors. We apply LEAN in our distribution environment, and develop and deploy numerous initiatives through the Kaizen approach targeting improvements in sales, margin, warehouse operations, transportation, purchasing, working capital management and administrative processes. Our objective is to continue to implement LEAN initiatives across our business enterprise and to extend LEAN services to our customers and suppliers.

Talent Management. We seek to develop a distinct competitive advantage through talent management and employee engagement and development. We believe our ability to attract, develop and retain diverse human capital is imperative to ongoing business success. We improve workforce capability through various programs and processes that identify, recruit, develop and promote our talent base. Significant enhancements in these programs have been made over the last several years, and we expect to continue to refine and enhance these programs in the future.

Products and Services

Products

Our network of branches and distribution centers stock approximately 250,000 unique product stock keeping units and we provide customers with access to more than 1,000,000 different products. Each branch tailors its inventory to meet the needs of its local customers.

Representative product categories and associated product lines that we offer include:

• General and Industrial Supplies. Wiring devices, fuses, terminals, connectors, boxes, enclosures, fittings, lugs, terminations, tape, splicing and marking equipment, tools and testers, safety and security, personal protection, abrasives, cutting tools, tapes, consumables, fasteners, janitorial and other MRO supplies;

• Wire, Cable and Conduit. Wire, cable, raceway, metallic and non-metallic conduit;

• Data and Broadband Communications. Structured cabling systems, broadband products, low voltage specialty systems, specialty wire and cable products, equipment racks and cabinets, access control, alarms, cameras, paging and voice solutions;

• Power Distribution Equipment. Circuit breakers, transformers, switchboards, panel boards, metering products and busway products;

• Lighting and Controls. Lamps, fixtures, ballasts and lighting control products; and

• Control, Automation and Motors. Motor control devices, drives, surge and power protection, relays, timers, pushbuttons, operator interfaces, switches, sensors, and interconnects.

The following table sets forth sales information about our sales by product category:

Year Ended December 31,	2015	2014	2013
(percentages based on total sales)
General and Industrial Supplies	40%	40%	40%
Wire, Cable and Conduit	15%	16%	16%
Data and Broadband Communications	15%	14%	14%
Power Distribution Equipment	11%	11%	11%
Lighting and Controls	10%	10%	10%
Control, Automation and Motors	9%	9%	9%

We purchase products from a diverse group of more than 25,000 suppliers. In 2015, our ten largest suppliers accounted for approximately 32% of our purchases. Our largest supplier in 2015 was Eaton Corporation, accounting for approximately 11% of our purchases. No other supplier accounted for more than 5% of our total purchases.

Our supplier relationships are important to us, providing access to a wide range of products, technical training, and sales and marketing support. We have approximately 300 preferred supplier arrangements with more than 200 firms and purchase nearly 60% of our products pursuant to these arrangements. Consistent with industry practice, most of our agreements with suppliers, including both distribution agreements and preferred supplier agreements, are terminable by either party on 60 days notice or less.

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Services

As part of our overall offering, we provide customers a comprehensive portfolio of value added services which includes more than 50 value add solutions in 10 categories including construction, e-commerce, energy and sustainability, engineering services, production support, safety and security, supply chain optimization, training, and working capital. These solutions are designed to address our customers' business needs through:

• Technical support for operational and transactional process improvements;

• Inventory optimization programs, including just-in-time delivery and vendor managed inventory;

• Collaborative, cross-functional, cost savings teams;

• Dedicated on-site support personnel;

• Consultation on energy-efficient product upgrades; and

• Safety and product training for customer employees.

Competitive Strengths

We compete directly with global, national, regional and local distributors of electrical and other industrial supplies, along with buying groups formed by smaller distributors. Competition is primarily focused on the local service area, and is generally based on product line breadth, product availability, service capabilities and price. Although certain Internet-based procurement service companies, auction businesses and trade exchanges remain in the marketplace, the impact on our business from these competitors has not been significant. We believe that our market leadership, broad product offering and value-added services, extensive distribution network and low-cost operator status provide distinct competitive advantages.

Market Leadership. Our ability to manage complex global supply chains, multi-site facility maintenance programs and construction projects, requiring special sourcing, technical advice, logistical support and locally based service, has enabled us to establish a strong presence in the competitively-fragmented North American electrical distribution market.

Broad Product Offering and Value-added Services. We provide a wide range of products, services and procurement solutions, which draw on our product knowledge, supply and logistics expertise, system capabilities and supplier relationships to enable our customers to maximize productivity, minimize waste, improve efficiencies, reduce costs and enhance safety. Our broad product offering and stable source of supply enables us to consistently meet customers’ wide-ranging capital project, product, MRO and OEM requirements.

Extensive Distribution Network. We operate approximately 500 geographically dispersed branch locations and nine distribution centers (five in the United States and four in Canada). Our distribution centers add value for our customers, suppliers, and branches through the combination of a broad and deep selection of inventory, online ordering and next-day shipment capabilities, and central order handling and fulfillment. Our distribution center network reduces the lead time and cost of supply chain activities through its automated replenishment and warehouse management system, and provides economies of scale in purchasing, inventory management, administration and transportation. This extensive network, which would be difficult and expensive to replicate, allows us to:

• Enhance localized customer service, technical support and sales coverage;

• Tailor individual branch products and services to local customer needs; and

• Offer multi-site distribution capabilities to large customers and global accounts.

Low-Cost Operator. Our competitiveness has been enhanced by our consistent favorable operating cost position, which is based on the use of LEAN, strategically-located distribution centers, and purchasing economies of scale. As a result of these and other factors, our operating cost as a percentage of sales is one of the lowest in our industry. Our selling, general and administrative expenses as a percentage of revenues for 2015 were 14.0%.

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Geography

Our network of branches and distribution centers are located primarily in North America. We attribute revenues from external customers to individual countries on the basis of the point of sale. The following table sets forth information about us by geographic area:

	Net Sales Year Ended December 31,												Long-Lived Assets December 31,
	2015				2014				2013				2015		2014		2013
(In thousands)
United States	$	5,665,962	75	%	$	5,618,240	71	%	$	5,275,275	70	%	$	157,570	$	127,670	$	137,904
Canada	1,533,705		21	%	1,899,173		24	%	1,882,313		25	%	63,088		80,080		93,642
Mexico	70,048		1	%	95,585		1	%	90,152		1	%	332		442		615
Subtotal North American Operations	7,269,715				7,612,998				7,247,740				220,990		208,192		232,161
Other International	248,772		3	%	276,628		4	%	265,602		4	%	5,369		8,213		11,115
Total	$	7,518,487			$	7,889,626			$	7,513,342			$	226,359	$	216,405	$	243,276

United States. To serve our customers in the United States, we operate a network of approximately 350 branches supported by five distribution centers located in Pennsylvania, Nevada, Mississippi, Wisconsin and Arkansas. Sales in the United States represented approximately 75% of our total sales in 2015. According to the Electrical Wholesaling Magazine, the U.S. electrical wholesale distribution industry had estimated sales of approximately $100 billion in 2015.

Canada. To serve our Canadian customers, we operate a network of approximately 125 branches in nine provinces. Branch operations are supported by four distribution centers located in Alberta, Quebec, Ontario, and British Columbia. Sales in Canada represented approximately 21% of our total sales in 2015. Total annual electrical industry sales in Canada were approximately $7.2 billion in 2015 according to a recent publication.

Mexico. We have 9 branch locations in Mexico. Our headquarters in Tlalnepantla Estado de Mexico operates similar to a distribution center to enhance the service capabilities of the local branches. Sales in Mexico represented approximately 1% of our total sales in 2015.

Other International. We sell to global customers through export sales offices located in Miami, Houston, Pittsburgh, Montreal, and Calgary within North America and sales offices and branch operations in various international locations. Sales from other international locations represented approximately 3% of our total sales in 2015. Our branches in Aberdeen, Scotland, Dublin, Ireland and Manchester, England support sales efforts in Europe and the Middle East. We have branches in Singapore and Thailand to support our sales to Asia and a branch near Shanghai to serve customers in China along with operations in eight additional countries. Many of our international locations have been established to serve our growing list of customers with global operations.

Intellectual Property

We currently have trademarks, patents and service marks registered with the U.S. Patent and Trademark Office and Canadian Intellectual Property Office. The trademarks and service marks registered in the U.S. include: “WESCO^®”, our corporate logo and the running man logo. The Company's "EECOL" trademark is registered in Canada. In addition, trademarks, patents, and service mark applications have been filed in various foreign jurisdictions, including Canada, Mexico, Chile, the United Kingdom, Singapore, China, Hong Kong, Thailand and the European Community.

Environmental Matters

Our facilities and operations are subject to federal, state and local laws and regulations relating to environmental protection and human health and safety. Some of these laws and regulations may impose strict, joint and several liabilities on certain persons for the cost of investigation or remediation of contaminated properties. These persons may include former, current or future owners or operators of properties and persons who arranged for the disposal of hazardous substances. Our owned and leased real property may give rise to such investigation, remediation and monitoring liabilities under environmental laws. In addition, anyone disposing of certain products we distribute, such as ballasts, fluorescent lighting and batteries, must comply with environmental laws that regulate certain materials in these products.

We believe that we are in compliance, in all material respects, with applicable environmental laws. As a result, we do not anticipate making significant capital expenditures for environmental control matters either in the current year or in the near future.

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Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first quarter are affected by a reduced level of activity. Sales during the second, third and fourth quarters are generally 5 - 7% higher than the first quarter. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction our sales by quarter have varied significantly from this seasonal pattern.

Website Access

Our Internet address is www.wesco.com. Information contained on our website is not part of, and should not be construed as being incorporated by reference into, this Annual Report on Form 10-K. We make available free of charge under the “Investors” heading on our website our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as well as our Proxy Statements, as soon as reasonably practicable after such documents are electronically filed or furnished, as applicable, with the Securities and Exchange Commission (the “SEC”). You also may read and copy any materials we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549-0213. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site at www.sec.gov that contains reports, proxy and information statements and other information regarding issuers like us who file electronically with the SEC.

In addition, our charters for our Executive Committee, Nominating and Governance Committee, Audit Committee and Compensation Committee, as well as our Corporate Governance Guidelines, Code of Principles for Senior Executives, Independence Policy, Global Anti-Corruption Policy, and Code of Business Ethics and Conduct for our Directors, officers and employees, are all available on our website in the “Corporate Governance” link under the “Investors” heading.

Forward-Looking Information

This Annual Report on Form 10-K contains various “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements involve certain unknown risks and uncertainties, including, among others, those contained in Item 1, “Business,” Item 1A, “Risk Factors,” and Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” When used in this Annual Report on Form 10-K, the words “anticipates,” “plans,” “believes,” “estimates,” “intends,” “expects,” “projects,” “will” and similar expressions may identify forward-looking statements, although not all forward-looking statements contain such words. Such statements, including, but not limited to, our statements regarding business strategy, growth strategy, competitive strengths, productivity and profitability enhancement, competition, new product and service introductions and liquidity and capital resources are based on management’s beliefs, as well as on assumptions made by and information currently available to, management, and involve various risks and uncertainties, some of which are beyond our control. Our actual results could differ materially from those expressed in any forward-looking statement made by us or on our behalf. In light of these risks and uncertainties, there can be no assurance that the forward-looking information will in fact prove to be accurate. We have undertaken no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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Executive Officers

Our executive officers and their respective ages and positions as of February 22, 2016, are set forth below.

Name	Age	Position
John J. Engel	54	Chairman, President and Chief Executive Officer
Timothy A. Hibbard	59	Vice President and Corporate Controller
Diane E. Lazzaris	49	Senior Vice President and General Counsel
Kenneth S. Parks	52	Senior Vice President and Chief Financial Officer
Kimberly G. Windrow	58	Senior Vice President and Chief Human Resource Officer

Set forth below is biographical information for our executive officers listed above.

John J. Engel was appointed Chairman of the Board in May 2011 and has served as President and Chief Executive Officer since September 2009. Previously, Mr. Engel served as our Senior Vice President and Chief Operating Officer from 2004 to September 2009. From 2003 to 2004, Mr. Engel served as Senior Vice President and General Manager of Gateway, Inc. From 1999 to 2002, Mr. Engel served as an Executive Vice President and Senior Vice President of Perkin Elmer, Inc. From 1994 to 1999, Mr. Engel served as a Vice President and General Manager of Allied Signal, Inc. and held various engineering, manufacturing and general management positions at General Electric Company from 1985 to 1994. Mr. Engel is also a director of United States Steel Corporation and chairman of its audit committee.

Timothy A. Hibbard was appointed as our Vice President and Corporate Controller in February 2012. From 2006 to February 2012, he served as our Corporate Controller. From 2002 to 2006, he served as Corporate Controller at Kennametal Inc. From 2000 to 2002, Mr. Hibbard served as Director of Finance of Kennametal’s Advanced Materials Solutions Group, and, from 1998 to 2000, he served as Controller of Greenfield Industries, Inc., a subsidiary of Kennametal Inc.

Diane E. Lazzaris has served as our Senior Vice President and General Counsel since January 2014, and from February 2010 to December 2013 she served as our Vice President, Legal Affairs. From 2008 to 2010, Ms. Lazzaris served as Senior Vice President - Legal, General Counsel and Corporate Secretary of Dick’s Sporting Goods, Inc. From 1994 to 2008, she held various corporate counsel positions at Alcoa Inc., most recently as Group Counsel to a group of global businesses.

Kenneth S. Parkshas served as our Senior Vice President and Chief Financial Officer since January 2014, and from June 2012 to December 2013 he served as our Vice President and Chief Financial Officer. From April 2008 to February 2012, he served as Vice President of Finance of United Technologies Corporation for their global Fire and Security business. From 2005 to 2008, he served as Director of Investor Relations of United Technologies Corporation. He began his career in public accounting with Coopers & Lybrand.

Kimberly G. Windrow has served as our Senior Vice President and Chief Human Resources Officer since January 2014, and from August 2010 to December 2013 she served as our Vice President, Human Resources. From 2004 until July 2010, Ms. Windrow served as Senior Vice President of Human Resources for The McGraw Hill Companies in the education segment. From 2001 until 2004, she served as Senior Vice President of Human Resources for The MONY Group, and from 1988 until 2000, she served in various Human Resource positions at Willis, Inc.

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Item 1A. Risk Factors.

The following factors, among others, could cause our actual results to differ materially from the forward-looking statements we make. All forward-looking statements attributable to us or persons working on our behalf are expressly qualified by the following factors. This information should be read in conjunction with Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, Item 7A, Quantitative and Qualitative Disclosures about Market Risks and the consolidated financial statements and related notes included in this Form 10-K.

Adverse conditions in the global economy and disruptions of financial markets could negatively impact our results of operations.

Our results of operations are affected by the level of business activity of our customers, which in turn is affected by global economic conditions and market factors impacting the industries and markets that they serve. Certain global economies and markets continue to experience significant uncertainty and volatility, particularly commodity-driven end markets such as oil and gas and metals and mining. Adverse economic conditions or lack of liquidity in these markets, particularly in North America, may adversely affect our revenues and operating results. Economic and financial market conditions also affect the availability of financing for projects and for our customers' capital or other expenditures, which can result in project delays or cancellations and thus affect demand for our products. There can be no assurance that any governmental responses to economic conditions or disruptions in the financial markets ultimately will stabilize the markets or increase our customers' liquidity or the availability of credit to our customers. Should one or more of our larger customers declare bankruptcy, it could adversely affect the collectability of our accounts receivable, bad debt reserves and net income. In addition, our ability to access the capital markets may be restricted at a time when we would like, or need, to do so. The global economic and financial environment also may affect our business and financial condition in ways that we currently cannot predict, and there can be no assurance that global economic and market conditions will not adversely affect our results of operations, cash flow or financial position in the future. Fluctuations of the U.S. dollar relative to other currencies could negatively affect our business, financial results and liquidity.

Certain events or conditions, including a failure or breach of our information security systems, could lead to interruptions in our operations, which may materially adversely affect our business, financial condition or results of operations.

We operate a number of facilities and we coordinate company activities, including information technology systems and administrative services and the like, through our headquarters operations. Our operations depend on our ability to maintain existing systems and implement new technology, which includes allocating sufficient resources to periodically upgrade our information technology systems, and to protect our equipment and the information stored in our databases against both manmade and natural disasters, as well as power losses, computer and telecommunications failures, technological breakdowns, unauthorized intrusions, cyber-attacks, and other events. Conversions to new information technology systems may result in cost overruns, delays or business interruptions. If our information technology systems are disrupted, become obsolete or do not adequately support our strategic, operational or compliance needs, it could result in competitive disadvantage and adversely affect our financial results and business operations, including our ability to process orders, receive and ship products, maintain inventories, collect accounts receivable and pay expenses.

Because we rely heavily on information technology both in serving our customers and in our enterprise infrastructure in order to achieve our objectives, we may be vulnerable to damage or intrusion from a variety of cyber-attacks including computer viruses, worms or other malicious software programs that access our systems. Despite the precautions we take to mitigate the risks of such events, an attack on our enterprise information technology system could result in theft or disclosure of our proprietary or confidential information or a breach of confidential customer, supplier or employee information. Such events could have an adverse impact on revenue, harm our reputation, and cause us to incur legal liability and costs, which could be significant, to address and remediate such events and related security concerns.

We also depend on accessible office facilities, distribution centers and information technology data centers for our operations to function properly. An interruption of operations at any of our distribution centers could have a material adverse effect on the operations of branches served by the affected distribution center. Such disaster related risks and effects are not predictable with certainty and, although they typically can be mitigated, they cannot be eliminated. We seek to mitigate our exposures to disaster events in a number of ways. For example, where feasible, we design the configuration of our facilities to reduce the consequences of disasters. We also maintain insurance for our facilities against casualties and we evaluate our risks and develop contingency plans for dealing with them. Although we have reviewed and analyzed a broad range of risks applicable to our business, the ones that actually affect us may not be those we have concluded most likely to occur. Furthermore, although our reviews have led to more systematic contingency planning, our plans are in varying stages of development and execution, such that they may not be adequate at the time of occurrence for the magnitude of any particular disaster event that befalls us.

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Loss of key suppliers, product cost fluctuations, lack of product availability or inefficient supply chain operations could decrease sales and earnings.

Most of our agreements with suppliers are terminable by either party on 60 days' notice or less. Our ten largest suppliers in 2015 accounted for approximately 32% of our purchases for the period. Our largest supplier in 2015 was Eaton Corporation, accounting for approximately 11% of our purchases. The loss of, or a substantial decrease in the availability of, products from any of these suppliers, a supplier's change in sales strategy to rely less on distribution channels, the loss of key preferred supplier agreements, or disruptions in a key supplier's operations could have a material adverse effect on our business. Supply interruptions could arise from shortages of raw materials, effects of economic or financial market conditions on a supplier's operations, labor disputes or weather conditions affecting products or shipments, transportation disruptions, information system disruptions or other reasons beyond our control.

In addition, certain of our products, such as wire and conduit, are commodity-price-based products and may be subject to significant price fluctuations which are beyond our control. While increases in the cost of energy or products could have adverse effects, decreases in those costs, particularly if severe, could also adversely impact us by creating deflation in selling prices, which could cause our gross profit margin to deteriorate. Fluctuations in energy or raw materials costs can also adversely affect our customers. The recent declines in oil and gas prices have negatively impacted our customers operating in those industries and, consequently, our sales to those customers. Furthermore, we cannot be certain that particular products or product lines will be available to us, or available in quantities sufficient to meet customer demand. Such limited product access could cause us to be at a competitive disadvantage. The profitability of our business is also dependent upon the efficiency of our supply chain. An inefficient or ineffective supply chain strategy or operations could increase operational costs, reduce profit margins and adversely affect our business.

Expansion into new business activities, industries, product lines or geographic areas could subject the company to increased costs and risks and may not achieve the intended results.

Engaging in or significantly expanding business activities in product sourcing, sales and services could subject the company to unexpected costs and risks. Such activities could subject us to increased operating costs, product liability, regulatory requirements and reputational risks. Our expansion into new and existing markets, including manufacturing related or regulated businesses, may present competitive, distribution and regulatory challenges that differ from current ones. We may be less familiar with the target customers and may face different or additional risks, as well as increased or unexpected costs, compared to existing operations. Growth into new markets may also bring us into direct competition with companies with whom we have little or no past experience as competitors. To the extent we are reliant upon expansion into new geographic, industry and product markets for growth and do not meet the new challenges posed by such expansion, our future sales growth could be negatively impacted, our operating costs could increase, and our business operations and financial results could be negatively affected.

Fluctuations in foreign currency have an effect on reported results from operations.

The results of our foreign operations are reported in the local currency and then translated into U.S. dollars at the applicable exchange rates for inclusion in our consolidated financial statements. The exchange rates between some of these currencies and the U.S. dollar have fluctuated significantly in recent years, and may continue to do so in the future. In addition, because our financial statements are stated in U.S. dollars, such fluctuations may affect our results of operations and financial position, and may affect the comparability of our results between financial periods.

Changes in tax laws or challenges to the Company's tax positions by taxing authorities could adversely impact the Company's results of operations and financial condition.

We are subject to taxes in jurisdictions in which we do business, including but not limited to taxes imposed on our income, receipts, stockholders' equity, property, sales, purchases and payroll. As a result, the tax expense we incur can be adversely affected by changes in tax law. We frequently cannot anticipate these changes in tax law, which can cause unexpected volatility in our results from operations. While not limited to the United States and Canada, changes in the tax law at the federal and state/provincial levels in the United States and Canada can have a materially adverse effect on our results from operations. Additionally, the tax laws to which the Company is subject are inherently complex and ambiguous. Therefore, we must interpret the applicable laws and make subjective judgments about the expected outcome upon challenge by the applicable taxing authorities. As a result, the impact on our results from operations of the application of enacted tax laws to our facts and circumstances is frequently uncertain. If a tax authority successfully challenges our interpretation and application of the tax law to our facts and circumstances, there can be no assurance that we can accurately predict the outcome and the taxes ultimately owed upon effective settlement may differ from the tax expense recognized in our consolidated statements of income and comprehensive income (loss) and accrued in our consolidated balance sheets. Additionally, if we cannot meet liquidity

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requirements in the United States, we may have to repatriate funds from overseas, which would result in a United States tax liability on the amount repatriated.

An increase in competition could decrease sales or earnings.

We operate in a highly competitive industry and compete directly with global, national, regional and local providers of our products and services. Some of our existing competitors have, and new market entrants may have, greater resources than us. Competition is primarily focused in the local service area and is generally based on product line breadth, product availability, service capabilities and price. Other sources of competition are buying groups formed by smaller distributors to increase purchasing power and provide some cooperative marketing capability as well as e-commerce companies.

Existing or future competitors may seek to gain or retain market share by reducing prices, and we may be required to lower our prices or may lose business, which could adversely affect our financial results. Also, to the extent that we do not meet changing customer preferences or demands or to the extent that one or more of our competitors becomes more successful with private label products or otherwise, our ability to attract and retain customers could be materially adversely affected. Existing or future competitors also may seek to compete with us for acquisitions, which could have the effect of increasing the price and reducing the number of suitable acquisitions. In addition, it is possible that competitive pressures resulting from industry consolidation could affect our growth and profit margins.

Acquisitions that we may undertake would involve a number of inherent risks, any of which could cause us not to realize the benefits anticipated to result.

We have expanded our operations through organic growth and selected acquisitions of businesses and assets and may seek to do so in the future. Acquisitions involve various inherent risks, including: problems that could arise from the integration of the acquired business; uncertainties in assessing the value, strengths, weaknesses, contingent and other liabilities and potential profitability of acquisition candidates; the potential loss of key employees of an acquired business; the ability to achieve identified operating and financial synergies anticipated to result from an acquisition or other transaction; unanticipated changes in business, industry or general economic conditions that affect the assumptions underlying the acquisition or other transaction rationale; and expansion into new countries or geographic markets where we may be less familiar with operating requirements, target customers and regulatory compliance. Any one or more of these factors could increase our costs or cause us not to realize the benefits anticipated to result from the acquisition of business or assets.

While there are risks associated with acquisitions generally, including integration risks, there are additional risks more specifically associated with owning and operating businesses internationally, including those arising from import and export controls, foreign currency exchange rate changes, material developments in political, regulatory or economic conditions impacting those operations and various environmental and climatic conditions in particular areas of the world.

We must attract, retain and motivate key employees, and the failure to do so may adversely affect our business and results of operations.

Our success depends on hiring, retaining and motivating key employees, including executive, managerial, sales, technical, marketing and support personnel. We may have difficulty locating and hiring qualified personnel. In addition, we may have difficulty retaining such personnel once hired, and key people may leave and compete against us. The loss of key personnel or our failure to attract and retain other qualified and experienced personnel could disrupt or adversely affect our business, its sales and results of operations. In addition, our operating results could be adversely affected by increased costs due to increased competition for employees, higher employee turnover, which may also result in loss of significant customer business, or increased employee benefit costs.

We are subject to costs and risks associated with laws and regulations affecting our business, as well as litigation for product liability or other matters affecting our business.

The complex legal and regulatory environment exposes us to compliance costs and risks, as well as litigation and other legal proceedings, which could materially affect our operations and financial results. These laws and regulations may change, sometimes significantly, as a result of political or economic events. They include tax laws and regulations, import and export laws and regulations, labor and employment laws and regulations, product safety, occupational safety and health laws and regulations, securities and exchange laws and regulations (and other laws applicable to publicly-traded companies such as the Foreign Corrupt Practices Act), and environmental laws and regulations. Furthermore, as a government contractor selling to federal, state and local government entities, we are also subject to a wide variety of additional laws and regulations. Proposed laws and regulations in these and other areas, such as healthcare, employment, or legal matters could affect the cost of our business operations. From time to time we are involved in legal proceedings, audits or investigations which may relate to, for example, product liability, labor and employment (including wage and hour), tax, escheat, import and export compliance, government contracts, worker health and safety, general commercial and securities matters. While we believe that the outcome

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of any pending matter is unlikely to have a material adverse effect on our financial condition or liquidity, additional legal proceedings may arise in the future and the outcome of any legal proceedings and other contingencies could require us to take actions which could adversely affect our operations or could require us to pay substantial amounts of money.

Our outstanding indebtedness requires debt service commitments that could adversely affect our ability to fulfill our obligations and could limit our growth and impose restrictions on our business.

As of December 31, 2015, we had $1,665.4 million of consolidated indebtedness (excluding debt discount), including $500.0 million in aggregate principal amount of 5.375% Senior Notes due 2021 (the “2021 Notes”), $344.9 million in aggregate principal amount of 6.0% Convertible Senior Debentures due 2029 (the “2029 Debentures”) and $174.8 million in aggregate principal amount of term loans due 2019 (the “Term Loan Facility”). Our consolidated indebtedness also includes amounts outstanding under our revolving credit facility (the "Revolving Credit Facility"), which has an aggregate borrowing capacity of $600.0 million, and our accounts receivable securitization facility (the “Receivables Facility”), through which we sell up to $550.0 million of our accounts receivable to third-party financial institutions. We and our subsidiaries may undertake additional borrowings in the future, subject to certain limitations contained in the instruments governing our indebtedness.

Our debt service obligations have important consequences, including: our payments of principal and interest reduce the funds available to us for operations, future business opportunities and acquisitions and other purposes; they increase our vulnerability to adverse economic, financial market and industry conditions; our ability to obtain additional financing may be limited; we may be required to incur additional interest due to the contingent interest features of the 2029 Debentures, which are embedded derivatives; and our financial results are affected by increased interest costs. Our ability to make scheduled payments of principal and interest on our debt, refinance our indebtedness, make scheduled payments on our operating leases, fund planned capital expenditures or to finance acquisitions will depend on our future performance, which, to a certain extent, is subject to economic, financial, competitive and other factors beyond our control. There can be no assurance that our business will continue to generate sufficient cash flow from operations in the future to service our debt, make necessary capital expenditures or meet other cash needs. If unable to do so, we may be required to refinance all or a portion of our existing debt, to sell assets or to obtain additional financing. Our Revolving Credit Facility is subject to renewal in September 2020 and our Receivables Facility is subject to renewal in September 2018. There can be no assurance that available funding or any sale of additional receivables or additional financing will be possible at the times of renewal in amounts or terms favorable to us, if at all.     

Over the next three years, we will be required to repay approximately $570.6 million of our currently outstanding indebtedness, of which $525.0 million is related to our Receivables Facility, $43.3 million is related to our international lines of credit, and $2.3 million is related to our capital leases.

Our debt agreements contain restrictions that may limit our ability to operate our business.

Our credit facilities also require us to maintain specific earnings to fixed expenses and to meet minimum net worth requirements in certain circumstances. Our Term Loan Facility, 2021 Notes and credit facilities contain, and any of our future debt agreements may contain, certain covenant restrictions that limit our ability to operate our business, including restrictions on our ability to: incur additional debt or issue guarantees; create liens; make certain investments; enter into transactions with our affiliates; sell certain assets; make capital expenditures; redeem capital stock or make other restricted payments; declare or pay dividends or make other distributions to stockholders; and merge or consolidate with any person. Our Term Loan Facility and certain other credit facilities contain additional affirmative and negative covenants, and our ability to comply with these covenants is dependent on our future performance, which will be subject to many factors, some of which are beyond our control, including prevailing economic conditions.      

As a result of these covenants, our ability to respond to changes in business and economic conditions and to obtain additional financing, if needed, may be significantly restricted, and we may be prevented from engaging in transactions that might otherwise be beneficial to us. In addition, our failure to comply with these covenants could result in a default under the 2029 Debentures, the 2021 Notes, the credit facilities, the Term Loan Facility, and our other debt, which could permit the holders to accelerate such debt. If any of our debt is accelerated, we may not have sufficient funds available to repay such debt.

Goodwill and indefinite-lived intangible assets recorded as a result of our acquisitions could become impaired.

As of December 31, 2015, our combined goodwill and indefinite-lived intangible assets amounted to $1,773.6 million. To the extent we do not generate sufficient cash flows to recover the net amount of any investments in goodwill and other indefinite-lived intangible assets recorded, the investment could be considered impaired and subject to write-off. We expect to record further goodwill and other indefinite-lived intangible assets as a result of future acquisitions we may complete. Future amortization of such assets or impairments, if any, of goodwill or indefinite-lived intangible assets would adversely affect our results of operations in any given period.

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There is a risk that the market value of our common stock may decline.

Stock markets have experienced significant price and trading volume fluctuations, and the market prices of companies in our industry have been volatile. In recent years, volatility and disruption reached unprecedented levels. For some issuers, the markets have exerted downward pressure on stock prices and credit capacity. It is impossible to predict whether the price of our common stock will rise or fall. Trading prices of our common stock will be influenced by our operating results and prospects and by global economic, financial and other factors.

Future sales of our common stock in the public market or issuance of securities senior to our common stock could adversely affect the trading price of our common stock and the value of the 2029 Debentures.

Future sales of substantial amounts of our common stock or equity-related securities in the public market, or the perception that such sales could occur, could adversely affect prevailing trading prices of our common stock and the value of the 2029 Debentures and could impair our ability to raise capital through future offerings of equity or equity-related securities. No prediction can be made as to the effect, if any, that future sales of shares of common stock or the availability of shares of common stock for future sale will have on the trading price of our common stock or the value of the 2029 Debentures.

There may be future dilution of our common stock.

To the extent options to purchase common stock under our stock-based employee compensation plans are exercised, holders of our common stock will incur dilution. Additionally, our 2029 Debentures include contingent conversion price provisions and options for settlement in shares. Based on our current stock price, the 2029 Debentures may be converted into common stock which would increase dilution to our stockholders.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

We have approximately 500 branches, of which approximately 350 are located in the United States, approximately 125 are located in Canada and the remainder are in other locations including Chile, Mexico, the United Kingdom and Singapore. Approximately 16% of our branches are owned facilities, and the remainder are leased.

The following table summarizes our distribution centers:

	Square Feet	Leased/Owned
Location
Warrendale, PA(1)	194,000	Owned
Sparks, NV	199,000	Leased
Byhalia, MS(1)	148,000	Owned
Little Rock, AR	100,000	Leased
Madison, WI	136,000	Leased
Montreal, QC	126,000	Leased
Burnaby, BC	65,000	Leased
Edmonton, AB	101,000	Leased
Mississauga, ON	246,000	Leased

⁽¹⁾    Property pledged as collateral under our Term Loan Facility.

We also lease our 84,000 square-foot headquarters in Pittsburgh, Pennsylvania. We do not regard the real property associated with any single branch location as material to our operations. We believe our facilities are in good operating condition and are adequate for their respective uses.

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Item 3. Legal Proceedings.

From time to time, a number of lawsuits and claims have been or may be asserted against us relating to the conduct of our business, including routine litigation relating to commercial and employment matters. The outcome of any litigation cannot be predicted with certainty, and some lawsuits may be determined adversely to us. However, management does not believe, based on information presently available, that the ultimate outcome of any such pending matters is likely to have a material adverse effect on our financial condition or liquidity, although the resolution in any quarter of one or more of these matters may have a material adverse effect on our results of operations for that period.

Information relating to legal proceedings is included in Note 13, Commitments and Contingencies of the Notes to Consolidated Financial Statements and is incorporated herein by reference.

Item 4. Mine Safety Disclosures.

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

Market, Stockholder and Dividend Information. Our common stock is listed on the New York Stock Exchange under the symbol “WCC.” As of February 19, 2016, there were 42,198,471 shares of common stock outstanding held by approximately 21 holders of record. We have not paid dividends on the common stock and do not currently plan to pay dividends. We do, however, evaluate the possibility from time to time. It is currently expected that earnings will be reinvested to support business growth, debt reduction, acquisitions and share repurchases. In addition, our Revolving Credit Facility and Term Loan Facility restrict our ability to pay dividends. See Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources.”

The following table sets forth the high and low sales prices per share of our common stock, as reported on the New York Stock Exchange, for the periods indicated.

	Sales Prices
Quarter	High		Low
2014
First	$	94.75	$	78.52
Second	93.07		83.48
Third	88.31		78.17
Fourth	86.92		68.97
2015
First	$	77.40	$	65.38
Second	74.61		66.51
Third	69.57		45.47
Fourth	52.26		39.62

Issuer Purchases of Equity Securities. On December 17, 2014, WESCO announced that its Board of Directors approved, on December 11, 2014, the repurchase of up to $300 million of the Company's common stock through December 31, 2017. As of December 31, 2015, WESCO has repurchased 2,468,576 shares of the Company's common stock for $150.0 million under this repurchase authorization.

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Company Performance. The following stock price performance graph illustrates the cumulative total return on an investment in WESCO International, Inc., a 2015 Performance Peer Group, and the Russell 2000 Index. The graph covers the period from December 31, 2010 to December 31, 2015, and assumes that the value for each investment was $100 on December 31, 2010, and that all dividends were reinvested.

2015 Performance Peer Group:
Airgas, Inc.	Eaton Corporation Plc	MSC Industrial Direct Co., Inc.
Anixter International, Inc.	Emerson Electric Company	Pool Corporation
Applied Industrial Technologies, Inc.	Fastenal Company	Rockwell Automation, Inc.
Arrow Electronics, Inc.	Genuine Parts Company	Tech Data Corporation
Avnet, Inc.	Houston Wire & Cable Company	Essendant, Inc.1
Beacon Roofing Supply, Inc.	Hubbell, Inc.	W.W. Grainger, Inc.
Danaher Corporation	Ingram Micro, Inc.	Watsco, Inc.

¹ United Stationers changed their name to Essendant, Inc. in February 2015.

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Item 6. Selected Financial Data.

Selected financial data and significant events related to the Company’s financial results for the last five fiscal years are listed below. The financial data should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in Item 8 and with Management’s Discussion and Analysis of Financial Condition and Results of Operations, included in Item 7.

Year Ended December 31,	2015			2014			2013			2012			2011
(In millions, except per share data)
Income Statement Data:
Net sales	$	7,518.5		$	7,889.6		$	7,513.3		$	6,579.3		$	6,125.7
Cost of goods sold (excluding depreciation and amortization)	6,024.8			6,278.6			5,967.9			5,247.8			4,889.2
Selling, general and administrative expenses	1,055.0			1,076.8			996.8			961.0			872.0
Depreciation and amortization	65.0			68.0			67.6			37.6			31.6
Income from operations	373.7			466.2			481.0			332.9			332.9
Interest expense, net	69.8			82.1			85.6			47.8			53.6
Loss on debt extinguishment(1)	—			—			13.2			3.5			—
Other loss(2)	—			—			2.3			—			—
Income before income taxes	303.9			384.1			379.9			281.6			279.3
Provision for income taxes	95.5			108.7			103.4			79.9			83.1
Net income	208.4			275.4			276.5			201.7			196.2
Net loss (income) attributable to noncontrolling interest(3)	2.3			0.5			(0.1		)	0.1			0.1
Net income attributable to WESCO International, Inc.	$	210.7		$	275.9		$	276.4		$	201.8		$	196.3
Earnings per common share attributable to WESCO International, Inc.
Basic	$	4.85		$	6.21		$	6.26		$	4.62		$	4.54
Diluted	$	4.18		$	5.18		$	5.25		$	3.95		$	3.96
Weighted-average common shares outstanding
Basic	43.4			44.4			44.1			43.7			43.2
Diluted	50.4			53.3			52.7			51.1			49.6
Other Financial Data:
Capital expenditures	$	21.7		$	20.5		$	27.8		$	23.1		$	33.3
Net cash provided by operating activities	283.1			251.2			315.1			288.2			167.5
Net cash used in investing activities	(170.2		)	(144.2		)	(18.2		)	(1,311.0		)	(81.3		)
Net cash (used in) provided by financing activities	(67.8		)	(95.5		)	(257.5		)	1,044.0			(70.9		)
Balance Sheet Data:
Total assets	$	4,587.4		$	4,754.4		$	4,648.9		$	4,629.6		$	3,078.5
Total debt (including current and short-term debt)(4)	1,501.1			1,415.6			1,487.7			1,735.2			649.3
Stockholders’ equity(5)	1,773.9			1,928.2			1,764.8			1,553.7			1,345.9

⁽¹⁾  Represents the loss recognized in 2013 related to the $500 million prepayment made to the U.S. sub-facility of the term loans due 2019, and the loss recognized in 2012 due to the redemption of the Company's then outstanding 7.50% Senior Subordinated Notes due 2017.

⁽²⁾  Represents the loss on the sale of a foreign operation in 2013.

⁽³⁾  Represents the portion not owned by the Company of net loss (income) attributable to consolidated entities.

⁽⁴⁾  Includes the discount related to convertible debentures and the Term Loan Facility. See Note 7 of the Notes to Consolidated Financial Statements.

⁽⁵⁾  Stockholders’ equity includes amounts related to convertible debentures. See Note 7 of the Notes to Consolidated Financial Statements.

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included in Item 8 of this Annual Report onForm 10-K.

Company Overview

In 2015, we streamlined our organization, made improvements to our variable rate debt facilities, accelerated our LEAN initiatives, integrated two accretive acquisitions, generated strong cash flow and closely managed costs. Our financial results primarily reflect continued weakness in commodity-driven end markets and the unfavorable impact of changes in foreign currencies, partially offset by the benefits of cost reduction actions. Sales decreased $371.1 million, or 4.7%, over the prior year. Normalized organic sales decreased 3.3%; foreign exchange rates negatively impacted sales by 3.4% and were partially offset by a positive impact from acquisitions of 2.0%. Cost of goods sold as a percentage of net sales was 80.1% and 79.6% in 2015 and 2014, respectively. Operating income was $373.7 million for 2015, compared to $466.2 million for 2014. Operating income decreased due to lower sales, lower supplier volume rebates and business mix. Net income attributable to WESCO International, Inc. of $210.7 million decreased by 23.6%. Diluted earnings per share attributable to WESCO International, Inc. were $4.18 in 2015, compared with diluted earnings per share of $5.18 in 2014.

Our end markets consist of industrial firms, electrical and data communications contractors, utilities, and commercial organizations, institutions and governmental entities. Our transaction types to these markets can be categorized as stock, direct ship and special order. Stock orders are filled directly from existing inventory and represent approximately 50% of total sales. Approximately 39% of our total sales are direct ship sales. Direct ship sales are typically custom-built products, large orders or products that are too bulky to be easily handled and, as a result, are shipped directly to the customer from the supplier. Special orders are for products that are not ordinarily stocked in inventory and are ordered based on a customer’s specific request. Special orders represent the remaining 11% of total sales.

We have historically financed our working capital requirements, capital expenditures, acquisitions, share repurchases and new branch openings through internally generated cash flow, debt issuances, borrowings under our credit facilities and funding through our Receivables Facility.

Cash Flow

We generated $283.1 million in operating cash flow during 2015. Cash provided by operating activities included net income of $208.4 million and adjustments to net income totaling $121.2 million. Investing activities included aggregate payments of $151.6 million primarily for the acquisitions of Hill Country and Needham Electric, capital expenditures totaling $21.7 million, and proceeds of $3.1 million from the sale of assets. Financing activities during 2015 consisted of borrowings and repayments of $1,276.0 million and $1,209.0 million, respectively, related to our Revolving Credit Facility, borrowings and repayments of $252.6 million and $157.6 million, respectively, related to our Receivables Facility, and repayments of $69.2 million applied to our Term Loan Facility. Financing activities in 2015 also included borrowings and repayments on our various international lines of credit of $102.0 million and $100.3 million, respectively.

Free cash flow for the years ended December 31, 2015 and 2014 was $261.4 million and $230.7 million, respectively.

The following table sets forth the components of free cash flow:

	Twelve Months Ended
	December 31,
Free Cash Flow:	2015			2014
(In millions)
Cash flow provided by operations	$	283.1		$	251.2
Less: Capital expenditures	(21.7		)	(20.5		)
Free cash flow	$	261.4		$	230.7

Note: The table above reconciles cash flow provided by operations to free cash flow. Free cash flow is a non-GAAP financial measure provided by the Company as an additional indicator of liquidity. Capital expenditures are deducted from operating cash flow to determine free cash flow. Free cash flow is available to provide a source of funds for any of the Company's financing needs.

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Financing Availability

As of December 31, 2015, we had $438.7 million in total available borrowing capacity under our Revolving Credit Facility, which was comprised of $236.4 million of availability under the U.S. sub-facility and $202.3 million of availability under the Canadian sub-facility. Available borrowing capacity under our Receivables Facility was $10.9 million. These debt facilities were amended and restated on September 24, 2015. As a result of the respective amendments, the Revolving Credit Facility and Receivables Facility mature in September 2020 and September 2018, respectively. For further discussion related to the amendments of these facilities, refer to Note 7 of our Notes to the Consolidated Financial Statements.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to supplier programs, bad debts, inventories, insurance costs, goodwill, income taxes, contingencies and litigation. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. If actual market conditions are less favorable than those projected by management, additional adjustments to reserve items may be required. We believe the following critical accounting policies affect our judgments and estimates used in the preparation of our consolidated financial statements.

Revenue Recognition

Revenues are recognized for product sales when title, ownership and risk of loss pass to the customer, or for services when the service is rendered. In the case of stock sales and special orders, a sale occurs at the time of shipment from our distribution point, as the terms of our sales are predominantly FOB shipping point. In cases where we process customer orders but ship directly from our suppliers, revenue is recognized once product is shipped and title has passed. In all cases, revenue is recognized once the sales price to our customer is fixed or is determinable and we have reasonable assurance as to the collectability.

In certain customer arrangements, we provide services such as inventory management. We may perform some or all of the following services for customers: determine inventory stocking levels; establish inventory reorder points; launch purchase orders; receive material; put away material; and pick material for order fulfillment. We recognize revenue for services rendered during the period based upon a previously negotiated fee arrangement. We also sell inventory to these customers and recognize revenue at the time title and risk of loss transfers to the customer.

Selling, General and Administrative Expenses

We include warehousing, purchasing, branch operations, information services, and marketing and selling expenses in this category, as well as other types of general and administrative costs.

Allowance for Doubtful Accounts

We maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. We have a systematic procedure using estimates based on historical data and reasonable assumptions of collectibles at the local branch level and on a consolidated corporate basis to calculate the allowance for doubtful accounts.

Excess and Obsolete Inventory

We write down our inventory to its net realizable value based on internal factors derived from historical analysis of actual losses. We identify items at risk of becoming obsolete, which is defined as supply in excess of 36 months relative to demand or movement. We then analyze the ultimate disposition of previously identified excess inventory items, such as sold, returned to supplier, or scrapped. This item by item analysis allows us to develop an estimate of the likelihood that an item identified as being in excess supply ultimately becomes obsolete. We apply the estimate to inventory items currently in excess of 36 months supply, and reduce our inventory carrying value by the derived amount. We revisit and test our assumptions on a periodic basis. Historically, we have not had material changes to our assumptions and do not anticipate any material changes in the future.

Supplier Volume Rebates

We receive rebates from certain suppliers based on contractual arrangements with them. Since there is a lag between actual purchases and the rebates received from the suppliers, we must estimate and accrue the approximate amount of rebates available at a specific date. We record the amounts as other accounts receivable in the Consolidated Balance Sheets. The corresponding rebate income is recorded as a reduction of cost of goods sold. The appropriate level of such income is derived

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from the level of actual purchases made by us from suppliers. Supplier volume rebate rates have historically ranged between approximately 0.9% and 1.4% of sales depending on market conditions. In 2015, the rebate rate was 1.0%.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually during the fourth quarter using information available at the end of September, or more frequently if triggering events occur indicating that their carrying value may not be recoverable. We test for goodwill impairment on a reporting unit level and the evaluation involves comparing the fair value of each reporting unit with its carrying value. The fair values of our reporting units are determined using a combination of a discounted cash flow analysis and market multiples. Assumptions used for these fair value techniques are based on a combination of historical results, current forecasts, market data and recent economic events. We evaluate the recoverability of indefinite-lived intangible assets using a discounted cash flow analysis based on projected financial information. The determination of fair value involves significant management judgment and could be negatively affected by the current weak market conditions, including the challenging macroeconomic indicators in the markets in which we operate and those where our customers are based. We apply our best judgment when assessing the reasonableness of financial projections. At December 31, 2015 and 2014, goodwill and indefinite-lived trademarks totaled $1,773.6 million and $1,840.0 million, respectively.

The estimated fair values of most of our reporting units were at least 25% greater than their respective carrying values. One reporting unit with goodwill of $186.7 million had a fair value that was approximately 5% greater than its carrying value. In performing our quantitative assessment for this reporting unit, we used revenue growth rates of 2.9% to 5.7%, a terminal growth rate of 3% and a discount rate of 9.3%. Management believes that the terminal growth rate is supported by our historical growth rate, near-term projections and long-term expected market growth. The discount rate reflects marketplace participants' cost of capital. Had we used a discount rate that was 25 basis points higher or a terminal growth rate that was 25 basis points lower than those assumed, the fair value of this reporting unit would have continued to exceed its carrying amount.

A possible indicator of goodwill impairment is the relationship of a company’s market capitalization to its book value. As of December 31, 2015, our market capitalization exceeded our book value and there were no impairment losses identified as a result of our annual test. Fair value determinations require considerable judgment and are sensitive to changes in underlying assumptions and factors. As a result, there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible impairment test will prove to be an accurate prediction of future results.

Intangible Assets

We account for certain economic benefits purchased as a result of our acquisitions, including customer relations, distribution agreements, technology and trademarks, as intangible assets. Most trademarks have an indefinite life. We amortize all other intangible assets over a useful life determined by the expected cash flows produced by such intangibles and their respective tax benefits. Useful lives vary between 2 and 20 years, depending on the specific intangible asset.

Insurance Programs

We use commercial insurance for auto, workers’ compensation, casualty and health claims as a risk sharing strategy to reduce our exposure to catastrophic losses. Our strategy involves large deductible policies where we must pay all costs up to the deductible amount. We estimate our reserve based on historical incident rates and costs.

Income Taxes

We account for income taxes under the asset and liability method, which requires the recognition of deferred income taxes for events that have future tax consequences. Under this method, deferred income taxes are recognized (using enacted tax laws and rates) based on the future income tax effects of differences in the carrying amounts of assets and liabilities for financial reporting and tax purposes. The effect of a tax rate change on deferred tax assets and liabilities is recognized in income in the period of change.

We recognize deferred tax assets at amounts that are expected to be realized. To make such determination, we evaluate all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing temporary differences. A valuation allowance is recognized if it is “more likely than not” that some or all of a deferred tax asset will not be realized. We regularly assess the realizability of deferred tax assets.

No provision is made for undistributed earnings that are considered to be permanently reinvested to fund growth in foreign markets.

We account for uncertainty in income taxes using a "more-likely-than-not" recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from our estimate. We recognize interest related to uncertain tax benefits as part of interest expense. We recognize penalties related to uncertain tax benefits as part of income tax expense.     

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Convertible Debentures

We separately account for the liability and equity components of our convertible debentures in a manner that reflects our nonconvertible debt borrowing rate. We estimate our non-convertible debt borrowing rate through a combination of discussions with our financial institutions and review of relevant market data. The convertible debenture discount is amortized to interest expense, using the effective interest method, over the implicit life of the debentures.

Stock-Based Compensation

Our stock-based employee compensation plans are comprised of stock-settled stock appreciation rights, restricted stock units, and performance-based awards. Compensation cost for all stock-based awards is measured at fair value on the date of grant, and compensation cost is recognized, net of forfeitures, over the service period for awards expected to vest. The fair value of stock-settled appreciation rights and performance-based awards with market conditions is determined using the Black-Scholes and Monte Carlo simulation models, respectively. The fair value of restricted stock units with service conditions and performance-based awards with performance conditions is determined by the grant-date closing price of WESCO's common stock. Expected volatilities are based on historical volatility of our common stock. We estimate the expected life of stock-settled stock appreciation rights using historical data pertaining to option exercises and employee terminations. The risk-free rate is based on the U.S. Treasury yields in effect at the time of grant. The forfeiture assumption is based on our historical employee behavior, which we review on an annual basis. No dividends are assumed for stock-based awards.

Results of Operations

The following table sets forth the percentage relationship to net sales of certain items in our Consolidated Statements of Income and Comprehensive Income (Loss) for the periods presented.

Year Ended December 31,	2015		2014		2013
Net sales	100.0	%	100.0	%	100.0	%
Cost of goods sold	80.1		79.6		79.4
Selling, general and administrative expenses	14.0		13.6		13.3
Depreciation and amortization	0.9		0.9		0.9
Income from operations	5.0		5.9		6.4
Interest expense	0.9		1.0		1.1
Loss on debt extinguishment	—		—		0.2
Income before income taxes	4.1		4.9		5.1
Provision for income taxes	1.3		1.4		1.4
Net income attributable to WESCO International, Inc.	2.8	%	3.5	%	3.7	%

2015 Compared to 2014

Net Sales. Sales in 2015 decreased 4.7% to $7,518.5 million, compared with $7,889.6 million in 2014. Normalized organic sales decreased 3.3%; foreign exchange rates negatively impacted sales by 3.4% and were partially offset by a positive impact from acquisitions of 2.0%. Additionally, management estimates that price had no measurable impact on net sales.

The following table sets forth normalized organic sales growth:

	Twelve Months Ended
	December 31,
Normalized Organic Sales:	2015		2014
Change in net sales	(4.7	)%	5.0	%
Less: Impact from acquisitions	2.0	%	1.4	%
Less: Impact from foreign exchange rates	(3.4	)%	(1.6	)%
Less: Impact from number of workdays	—	%	(0.4	)%
Normalized organic sales growth	(3.3	)%	5.6	%

Note: Normalized organic sales growth is a non-GAAP financial measure provided by the Company to provide a better understanding of the Company's sales growth trends. Normalized organic sales growth is calculated by deducting the percentage impact on net sales from acquisitions, foreign exchange rates and number of workdays from the overall percentage change in consolidated net sales.

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Cost of Goods Sold. Cost of goods sold decreased 4.0% in 2015 to $6,024.8 million, compared with $6,278.6 million in 2014. Cost of goods sold as a percentage of net sales was 80.1% and 79.6% in 2015 and 2014, respectively.

Selling, General and Administrative (“SG&A”) Expenses. SG&A expenses include costs associated with personnel, shipping and handling, travel, advertising, facilities, utilities and bad debts. SG&A expenses decreased by $21.9 million, or 2.0%, to $1,055.0 million in 2015. The decrease in SG&A expenses is primarily due to cost reduction actions implemented during 2015, foreign exchange rates, lower variable sales and compensation costs and ongoing discretionary spending controls. As a percentage of net sales, SG&A expenses increased to 14.0% in 2015, compared to 13.6% in 2014, reflecting lower sales volume and incremental costs related to recent acquisitions, which were not fully offset by cost control actions and initiatives.

SG&A payroll expenses for 2015 of $735.9 million decreased by $23.0 million compared to 2014. The decrease in SG&A payroll expenses was primarily due to a decrease in commissions, incentives and benefits of $16.6 million and a decrease in temporary labor of $4.7 million. These decreases are due to a 5.0% headcount reduction, exclusive of acquisitions, and a reduction in discretionary spending.

The remaining SG&A expenses for 2015 of $319.1 million increased by $1.2 million compared to 2014.

Depreciation and Amortization. Depreciation and amortization decreased $3.0 million to $65.0 million in 2015, compared with $68.0 million in 2014.

Income from Operations. Income from operations decreased by $92.5 million to $373.7 million in 2015, compared to $466.2 million in 2014. Income from operations as a percentage of net sales was 5.0% and 5.9% in 2015 and 2014, respectively.

Interest Expense. Interest expense totaled $69.8 million in 2015, compared with $82.1 million in 2014, a decrease of 14.9%. Non-cash interest expense, which includes the amortization of debt discount, interest related to uncertain tax positions, the amortization of deferred financing fees and accrued interest was $3.5 million and $8.1 million for 2015 and 2014, respectively. The resolution of transfer pricing matters associated with previously filed tax positions resulted in non-cash interest income of $9.4 million in the fourth quarter of 2015. Cash interest expense decreased primarily as a result of the repayment of the Canadian sub-facility of the term loans due 2019 throughout 2015.

The following table sets forth the components of interest expense:

	Twelve Months Ended
	December 31,
	2015			2014
(In millions)
Amortization of debt discount	$	6.1		$	4.1
Amortization of deferred financing fees	6.1			4.4
Interest related to uncertain tax positions, net	(8.7		)	1.0
Accrued interest	—			(1.4		)
Non-cash interest expense	3.5			8.1
Cash interest expense	66.3			74.0
Total interest expense	$	69.8		$	82.1

Income Taxes. Our effective income tax rate was 31.4% in 2015 compared to 28.3% in 2014. Our effective tax rate is affected by recurring items, such as the relative amounts of income earned in the United States and foreign jurisdictions, primarily Canada, the tax rates in these jurisdictions and changes in foreign currency exchange rates. The resolution of the tax matter described above in the discussion of interest expense, resulted in incremental income tax expense of $11.7 million, which increased the effective tax rate by 2.9 percentage points.

Net Income. Net income decreased by $67.1 million, or 24.3%, to $208.4 million in 2015, compared to $275.4 million in 2014.

Net (Loss) Income Attributable to Noncontrolling Interest. Net loss attributable to noncontrolling interest was $2.3 million in 2015, compared to $0.5 million in 2014. The losses in 2015 and 2014 were primarily due to foreign exchange losses on cash balances.

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Net Income Attributable to WESCO International, Inc. Net income and diluted earnings per share attributable to WESCO International, Inc. on a consolidated basis totaled $210.7 million and $4.18 per share, respectively, in 2015, compared with $275.9 million and $5.18 per share, respectively, in 2014.

2014 Compared to 2013

Net Sales. Sales in 2014 increased 5.0% to $7,889.6 million, compared with $7,513.3 million in 2013. The increase in sales included positive impacts from organic growth and acquisitions of 5.6% and 1.4%, respectively, partially offset by the negative effects of foreign exchange rates and number of workdays of 1.6% and 0.4%, respectively. Additionally, management estimates a price impact on net sales of approximately 0.5%.

The following table sets forth normalized organic sales growth:

	Twelve Months Ended
	December 31,
Normalized Organic Sales:	2014		2013
Change in net sales	5.0	%	14.2	%
Less: Impact from acquisitions	1.4	%	14.6	%
Less: Impact from foreign exchange rates	(1.6	)%	(0.4	)%
Less: Impact from number of workdays	(0.4	)%	—	%
Normalized organic sales growth	5.6	%	—	%

Note: Normalized organic sales growth is a non-GAAP financial measure provided by the Company to provide a better understanding of the Company's sales growth trends. Normalized organic sales growth is calculated by deducting the percentage impact on net sales from acquisitions, foreign exchange rates and number of workdays from the overall percentage change in consolidated net sales.

Cost of Goods Sold. Cost of goods sold increased 5.2% in 2014 to $6,278.6 million, compared with $5,967.9 million in 2013. Cost of goods sold as a percentage of net sales was 79.6% and 79.4% in 2014 and 2013, respectively.

Selling, General and Administrative (“SG&A”) Expenses. SG&A expenses include costs associated with personnel, shipping and handling, travel, advertising, facilities, utilities and bad debts. SG&A expenses increased by $80.0 million, or 8.0%, to $1,076.8 million in 2014. The increase in SG&A expenses is primarily due to higher employment related costs resulting from the growth in organic sales and the impact from the LaPrairie, Hazmasters and Hi-Line acquisitions. SG&A expenses in 2013 include a $36.1 million favorable impact from the recognition of insurance coverage for a litigation-related charge recorded in 2012. Adjusted SG&A expenses increased $43.9 million, or approximately 4.2%, from 2013. As a percentage of net sales, adjusted SG&A expenses decreased to 13.6% in 2014, compared with 13.7% in 2013, reflecting ongoing cost controls and incremental cost reduction actions implemented during 2014.

The following table sets forth adjusted selling, general and administrative expenses:

	Twelve Months Ended
	December 31,
Adjusted Selling, General and Administrative Expenses:	2014			2013
(In millions)
Selling, general and administrative expenses	$	1,076.8		$	996.8
Litigation recovery included in SG&A	—			36.1
Adjusted selling, general and administrative expenses	$	1,076.8		$	1,032.9
Percent of sales	13.6		%	13.7		%

Note: Adjusted SG&A is provided by the Company to allow financial statement users to compare the Company's performance from period to period by adjusting for transactions management views as impacting the comparability of results.

SG&A payroll expenses for 2014 of $758.9 million increased by $38.7 million compared to 2013. The increase in SG&A payroll expenses was primarily due to an increase in salary expense of $23.6 million and an increase in commissions, incentives and benefits of $13.9 million. These increases are primarily due to an increase in headcount, which is the result of both recent acquisitions and organic sales growth.

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The remaining SG&A expenses for 2014 of $317.9 million increased by $41.3 million compared to 2013 primarily due to the favorable impact of a litigation matter in 2013 and increased occupancy and transportation costs of $5.8 in 2014 related to recent acquisitions and organic sales growth.

Depreciation and Amortization. Depreciation and amortization increased $0.4 million to $68.0 million in 2014, compared with $67.6 million in 2013. The increase in depreciation and amortization was primarily due to the impact from recent acquisitions, partially offset by the reduction in capital expenditures in 2014.

Income from Operations. Income from operations decreased by $14.8 million to $466.2 million in 2014, compared to $481.0 million in 2013. Income from operations in 2014 increased by $21.3 million, or 4.8%, from adjusted income from operations of $444.9 million in 2013. Adjusted income from operations as a percentage of net sales was 5.9% in 2014 and 2013, respectively.

The following table sets forth adjusted income from operations:

	Twelve Months Ended
	December 31,
Adjusted Income from Operations:	2014			2013
(In millions)
Income from operations	$	466.2		$	481.0
Litigation recovery included in SG&A	—			(36.1		)
Adjusted income from operations	$	466.2		$	444.9
Percent of sales	5.9		%	5.9		%

Note: Adjusted income from operations is provided by the Company to allow financial statement users to compare the Company's performance from period to period by adjusting for transactions management views as impacting the comparability of results.

Interest Expense. Interest expense totaled $82.1 million in 2014, compared with $85.6 million in 2013, a decrease of 4.1%. Non-cash interest expense, which includes the amortization of debt discount, interest related to uncertain tax positions, the amortization of deferred financing fees and accrued interest was $8.1 million and $10.2 million for 2014 and 2013, respectively.

The following table sets forth the components of interest expense:

	Twelve Months Ended
	December 31,
	2014			2013
(In millions)
Amortization of debt discount	$	4.1		$	4.3
Amortization of deferred financing fees	4.4			4.9
Interest related to uncertain tax positions, net	1.0			0.6
Accrued interest	(1.4		)	0.4
Non-cash interest expense	8.1			10.2
Cash interest expense	74.0			75.4
Total interest expense	$	82.1		$	85.6

Loss on Debt Extinguishment. In 2013, the Company incurred a loss on debt extinguishment of $13.2 million in connection with the repayment of $500 million of the Company's Term Loan Facility. In 2014, no such loss was incurred.

Loss on Sale of Argentina Business. The Company recorded a loss in 2013 of $2.3 million resulting from the sale and complete divestiture of its EECOL Electric Argentina operations. The Company did not record such a loss in 2014.

Income Taxes. Our effective income tax rate was 28.3% in 2014 compared to 27.2% in 2013. Our effective tax rate is affected by recurring items, such as the relative amounts of income earned in the United States and foreign jurisdictions, primarily Canada, and the tax rates in these jurisdictions. The relative amounts of income earned in the United States and Canada is affected by the exchange rate at which Canadian income is translated into U.S. dollars. The increase in the tax rate from 2013 to 2014 was primarily due to a discrete benefit recorded in 2013 for foreign tax credits as a result of the settlement

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of the Company’s 1998-2003 IRS examination and the impact of an unfavorable change in the Canadian to U.S. dollar foreign exchange rate on the translation of taxable income from WESCO’s Canadian operations.

Our effective income tax rate was 26.0% in 2014, as adjusted for the favorable impact of a litigation matter.

Net Income. Net income decreased by $1.1 million, or 0.4%, to $275.4 million in 2014, compared to $276.5 million in 2013. Net income in 2014 increased $20.9 million compared to adjusted net income of $254.5 million in 2013.

Net (Loss) Income Attributable to Noncontrolling Interest. Net loss attributable to noncontrolling interest was $0.5 million in 2014 and was primarily due to foreign exchange losses on cash balances. Net income attributable to noncontrolling interest totaled $0.1 million in 2013.

Net Income Attributable to WESCO International, Inc. Net income and diluted earnings per share attributable to WESCO International, Inc. on a consolidated basis totaled $275.9 million and $5.18 per share, respectively, in 2014, compared with $276.4 million and $5.25 per share, respectively, in 2013. Adjusted net income attributable to WESCO International, Inc. and adjusted diluted earnings per share was $254.4 million and $4.82, respectively, in 2013.

The following table sets forth adjusted net income and adjusted net income attributable to WESCO International, Inc.:

	Twelve Months Ended
	December 31,
Adjusted Net Income Attributable to WESCO International, Inc.:	2014			2013
(In millions)
Income before income taxes	$	384.1		$	379.9
Litigation recovery included in SG&A	—			(36.1		)
Adjusted income before income taxes	384.1			343.8
Adjusted provision for income taxes	108.7			89.3
Adjusted net income	275.4			254.5
Less: Net income (loss) attributable to noncontrolling interest	(0.5		)	0.1
Adjusted net income attributable to WESCO International, Inc.	$	275.9		$	254.4
Adjusted Diluted EPS:
Diluted share count	53.3			52.7
Adjusted diluted EPS	$	5.18		$	4.82

Note: Adjusted net income and adjusted net income attributable to WESCO International, Inc. is provided by the Company to allow financial statement users to compare the Company's performance from period to period by adjusting for transactions management views as impacting the comparability of results. Adjusted diluted EPS is calculated by dividing adjusted net income attributable to WESCO International, Inc. by weighted-average common shares outstanding and common share equivalents.

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Liquidity and Capital Resources

Total assets were $4.6 billion and $4.8 billion at December 31, 2015 and 2014, respectively. Total liabilities at December 31, 2015 and 2014 were $2.8 billion. Stockholders’ equity decreased by 8.0% to $1.8 billion at December 31, 2015, compared with $1.9 billion at December 31, 2014, primarily as a result of a $225.8 million foreign currency translation loss recorded within accumulated other comprehensive income (loss) and the repurchase of $150.0 million of common stock pursuant to the Company's stock repurchase plan. These decreases to stockholders' equity were partially offset by net income of $210.7 million.

The following table sets forth our outstanding indebtedness:

As of December 31,	2015			2014
(In thousands)
Term Loan Facility, less debt discount of $1,026 and $3,110 in 2015 and 2014, respectively	$	173,724		$	249,235
5.375% Senior Notes due 2021	500,000			500,000
Accounts Receivable Securitization Facility	525,000			430,000
Revolving Credit Facility	75,000			8,000
International lines of credit	43,314			46,787
6.0% Convertible Senior Debentures due 2029, less debt discount of $163,316 and $167,257 in 2015 and 2014, respectively	181,557			177,638
Capital leases	2,505			3,891
Other notes	—			9
Total debt	1,501,100			1,415,560
Less current and short-term portion	(44,339		)	(49,130		)
Total long-term debt	$	1,456,761		$	1,366,430

The required annual principal repayments for all indebtedness for the next five years and thereafter, as of December 31, 2015 is set forth in the following table:

(In thousands)
2016	$	44,339
2017	827
2018	525,413
2019	174,951
2020	75,040
Thereafter	844,872
Total payments on debt	$	1,665,442
Debt discount on convertible debentures and term loan facility	(164,342		)
Total debt	$	1,501,100

Our liquidity needs generally arise from fluctuations in our working capital requirements, capital expenditures, acquisitions and debt service obligations. As of December 31, 2015, we had $438.7 million in available borrowing capacity under our Revolving Credit Facility and $10.9 million in available borrowing capacity under our Receivables Facility, which combined with our cash of $96.5 million provided liquidity of $546.1 million. Cash included in our determination of liquidity represents cash in deposit and interest bearing investment accounts. We believe cash provided by operations and financing activities will be adequate to cover our current operational and business needs.

We monitor the depository institutions that hold our cash and cash equivalents on a regular basis, and we believe that we have placed our deposits with creditworthy financial institutions. We also communicate on a regular basis with our lenders regarding our financial and working capital performance, liquidity position and financial leverage. Our financial leverage ratio was 3.8 and 3.0 as of December 31, 2015 and 2014, respectively. In addition, we are in compliance with all covenants and restrictions contained in our debt agreements as of December 31, 2015.

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The following table sets forth the Company's financial leverage ratio as of December 31, 2015 and 2014:

Twelve months ended December 31,	2015		2014
(In millions, except ratios)
Income from operations	$	373.7	$	466.2
Depreciation and amortization	65.0		68.0
EBITDA	$	438.7	$	534.2
	December 31, 2015		December 31, 2014
Current debt	$	44.3	$	49.1
Long-term debt	1,456.8		1,366.4
Debt discount related to convertible debentures and Term Loan Facility(1)	164.3		170.4
Total debt including debt discount	$	1,665.4	$	1,585.9
Less: Cash and cash equivalents	160.3		128.3
Total debt including debt discount, net of cash	$	1,505.1	$	1,457.6
Financial leverage ratio based on total debt	3.8		3.0
Financial leverage ratio based on total debt, net of cash	3.4		2.7

⁽¹⁾ The convertible debentures and term loan facility are presented in the Consolidated Balance Sheets in long-term debt net of the unamortized discount.

Note: Financial leverage is provided by the Company as an indicator of capital structure position. Financial leverage ratio based on total debt is calculated by dividing total debt, including debt discount, by EBITDA. Financial leverage ratio based on total debt, net of cash, is calculated by dividing total debt, including debt discount, net of cash, by EBITDA. EBITDA is defined as the trailing twelve months earnings before interest, taxes, depreciation and amortization.

At December 31, 2015, we had cash and cash equivalents totaling $160.3 million, of which $127.0 million was held by foreign subsidiaries. The cash held by some of our foreign subsidiaries could be subject to additional U.S. income taxes if repatriated. We believe that we are able to maintain a sufficient level of liquidity for our domestic operations and commitments without repatriation of the cash held by these foreign subsidiaries.

Over the next several quarters, we plan to closely manage working capital, and it is expected that excess cash will be directed primarily at debt reduction, acquisitions and share repurchases. Our near term focus will be maintaining ample liquidity and credit availability. We anticipate capital expenditures in 2016 to be at levels similar to 2015. We believe our balance sheet and ability to generate ample cash flow provides us with a durable business model and should allow us to fund expansion needs and growth initiatives.

We finance our operating and investing needs as follows:

Term Loan Facility

On December 12, 2012, WESCO Distribution, as U.S. borrower, WDCC Enterprises Inc. ("WDCC" and together with WESCO Distribution, the “Borrowers”), as Canadian borrower, and WESCO International entered into a Term Loan Agreement (the “Term Loan Agreement”) among WESCO Distribution, WDCC, the Company, the lenders party thereto and Credit Suisse AG Cayman Islands Branch, as administrative agent and as collateral agent.

The Term Loan Agreement provided a seven-year term loan facility (the “Term Loan Facility”), which consisted of two separate sub-facilities: (i) a Canadian sub-facility in an aggregate principal amount of CAD $150 million, issued at a 2.0% discount and (ii) a U.S. sub-facility in an aggregate principal amount of $700 million, issued at a 1.0% discount. The proceeds of the Term Loan Facility were used to finance the acquisition of EECOL and to pay fees and expenses incurred in connection with the acquisition and certain other transactions. Subject to the terms of the Term Loan Agreement, the Borrowers may request incremental term loans from time to time in an aggregate principal amount not to exceed at any time $300 million, with an equivalent principal amount in U.S. Dollars being calculated for any incremental term loan denominated in Canadian Dollars.

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On November 19, 2013, the Borrowers and WESCO International entered into an amendment (the “Term Loan Amendment”) to the Term Loan Agreement. The Term Loan Amendment, among other things, reduced the applicable margin on U.S. term loans by 0.50% and the LIBOR floor applicable to the U.S. sub-facility from 1.00% to 0.75%. The modified pricing terms were effective December 13, 2013.

On November 26, 2013, WESCO Distribution sold $500 million aggregate principal amount of 5.375% Senior Notes due 2021 (the “2021 Notes”), and used the net proceeds plus excess cash to prepay $500 million under the Company's U.S. sub-facility of the Term Loan Facility (see discussion below under “5.375% Senior Notes due 2021” for additional information). The prepayment satisfied all remaining quarterly repayment obligations under the U.S. sub-facility. As a result, the Company recorded a non-cash pre-tax loss on debt extinguishment of $13.2 million in the fourth quarter of 2013. WESCO will amortize the remaining debt discount and financing costs over the life of the instrument. As of December 31, 2015, the amount outstanding under the U.S. sub-facility was $174.8 million. The Canadian sub-facility was fully repaid in 2015 using cash provided by Canadian operations.

Borrowings under the Term Loan Facility bear interest at base rates plus applicable margins. At December 31, 2015, the interest rate on borrowings under the U.S. sub-facility was 3.75%. At December 31, 2014, the interest rate on borrowings under the Canadian and U.S. sub-facilities were 5.3% and 3.75%, respectively. To the extent not previously paid, the outstanding U.S. sub-facility will become due and payable on December 12, 2019, with any unpaid incremental term loans becoming due and payable on the respective maturity dates applicable to those incremental term loans. At any time or from time to time, the Borrowers may prepay borrowings under the Term Loan Facility in whole or in part without premium or penalty. The Borrowers' obligations under the Term Loan Facility are secured by substantially all of the assets of the Borrowers, the Company and certain of the Company's other subsidiaries; provided that, with respect to borrowings under the U.S. sub-facility, the collateral does not include assets of certain foreign subsidiaries or more than 65% of the issued and outstanding equity interests in certain foreign subsidiaries.

The Term Loan Facility contains customary affirmative and negative covenants for credit facilities of this type. The Term Loan Facility also provides for customary events of default.

5.375% Senior Notes due 2021

In November 2013, WESCO Distribution issued $500 million aggregate principal amount of 2021 Notes through a private offering exempt from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”). The 2021 Notes were issued at 100% of par and are governed by an indenture (the “Indenture”) entered into on November 26, 2013 with WESCO International and U.S. Bank National Association, as trustee. The 2021 Notes are unsecured senior obligations of WESCO Distribution and are guaranteed on a senior unsecured basis by WESCO International. The 2021 Notes bear interest at a stated rate of 5.375%, payable semi-annually in arrears on June 15 and December 15 of each year. In addition, WESCO recorded deferred financing fees related to the issuance of the 2021 Notes totaling $8.2 million, which are being amortized over the life of the notes. The 2021 Notes mature on December 15, 2021. The net proceeds of the 2021 Notes were used to prepay a portion of the U.S. sub-facility of the term loans due 2019.

Under the terms of a registration rights agreement dated as of November 26, 2013 among WESCO Distribution, Inc., WESCO International, Inc. and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as the representative of the initial purchasers of the 5.375% Notes, WESCO Distribution and WESCO International agreed to register under the Securities Act notes having terms identical in all material respects to the 5.375% Notes (the “5.375% Exchange Notes”) and to make an offer to exchange the 5.375% Exchange Notes for the 5.375% Notes. WESCO Distribution launched the exchange offer on June 12, 2014 and the exchange offer closed on July 17, 2014.

At any time on or after December 15, 2016, WESCO Distribution may redeem all or a part of the 2021 Notes. Between December 15, 2016 and December 14, 2017, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 104.031% of the principal amount. Between December 15, 2017 and December 14, 2018, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 102.688% of the principal amount. Between December 15, 2018 and December 14, 2019, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 101.344% of the principal amount. On and after December 15, 2019, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 100% of the principal amount.

The Indenture governing the 2021 Notes contains customary covenants and customary events of default. In addition, upon a change of control, the holders of 2021 Notes have the right to require WESCO Distribution to repurchase all or any part of the 2021 Notes at a redemption price equal to 101% of the principal amount, plus accrued and unpaid interest.

Mortgage Financing Facility

In 2003, WESCO finalized a mortgage financing facility of $51.0 million. This facility was extinguished with repayments of $26.4 million in the first quarter of 2013. The interest rate on borrowings under this facility was fixed at 6.5%.

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Accounts Receivable Securitization Facility

On September 24, 2015, WESCO Distribution, Inc. amended and restated its accounts receivable securitization facility (the "Receivables Facility") pursuant to the terms and conditions of a Fourth Amended and Restated Receivables Purchase Agreement (the “Receivables Purchase Agreement”), by and among WESCO Receivables Corp. (“WESCO Receivables”), WESCO Distribution, Inc., the various purchaser groups from time to time party thereto and PNC Bank, National Association, as Administrator. The Receivables Purchase Agreement amended and restated the receivables purchase agreement entered into on April 13, 2009.

The Receivables Purchase Agreement increased the purchase limit from $500 million to $550 million, with the opportunity to exercise an accordion feature which permits increases in the purchase limit of up to $100 million, extended the term of the Receivables Facility to September 24, 2018 and added and amended certain defined terms. The interest rate spread and commitment fee of the Receivables Facility remained 0.95% and 0.45%, respectively.

Under the Receivables Facility, WESCO sells, on a continuous basis, an undivided interest in all domestic accounts receivable to WESCO Receivables Corp., a wholly owned special purpose entity (the “SPE”). The SPE sells, without recourse, a senior undivided interest in the receivables to financial institutions for cash while maintaining a subordinated undivided interest in the receivables, in the form of overcollateralization. WESCO has agreed to continue servicing the sold receivables for the third-party conduits and financial institutions at market rates; accordingly, no servicing asset or liability has been recorded.

As of December 31, 2015 and 2014, accounts receivable eligible for securitization totaled approximately $684.7 million and $673.6 million, respectively. The Consolidated Balance Sheets as of December 31, 2015 and 2014 include $525.0 million and $430.0 million, respectively, of account receivable balances legally sold to third parties, as well as borrowings for equal amounts. At December 31, 2015 and 2014, the interest rate on borrowings under this facility was approximately 1.4% and 1.0%, respectively.

Revolving Credit Facility

On September 24, 2015, WESCO International, Inc., WESCO Distribution, Inc. and certain other subsidiaries of the Company entered into a $600 million revolving credit facility (the “Revolving Credit Facility”), which contains a letter of credit sub-facility of up to $125 million, pursuant to the terms and conditions of a Second Amended and Restated Credit Agreement (the "Credit Agreement").  The Revolving Credit Facility contains an accordion feature allowing WESCO Distribution, Inc. to request increases to the borrowing commitments, subject to customary conditions. This accordion feature increased from $100 million to $200 million in the aggregate. The Revolving Credit Facility replaced WESCO Distribution Inc.’s prior revolving credit facility entered into on December 12, 2012.

The Revolving Credit Facility matures in September 2020 and consists of two separate sub-facilities: (i) a Canadian sub-facility with a borrowing limit of up to $400 million, which is collateralized by substantially all assets of WESCO Canada and the other Canadian Borrowers, other than, among other things, real property, in each case, subject to customary exceptions and limitations, and (ii) a U.S sub-facility with a borrowing limit of up to $600 million less the amount of outstanding borrowings under the Canadian sub-facility. The U.S. sub-facility is collateralized by substantially all assets of WESCO Distribution, Inc. and its subsidiaries which are party to the Credit Agreement, other than, among other things, real property and accounts receivable sold or intended to be sold pursuant to the Receivables Purchase Agreement. The applicable interest rate for borrowings under the Revolving Credit Facility includes interest rate spreads based on available borrowing capacity that range between 1.25% and 1.75% for LIBOR-based borrowings and 0.25% and 0.75% for prime rate-based borrowings. At December 31, 2015, the interest rate on borrowings under this facility was approximately 1.7%.

The Credit Agreement requires ongoing compliance with certain customary affirmative and negative covenants. The Credit Agreement contains customary events of default.

During 2015, WESCO borrowed $1,276.0 million in the aggregate under the Revolving Credit Facility and prior revolving credit facility and made repayments in the aggregate amount of $1,209.0 million. During 2014, aggregate borrowings and repayments were $1,046.5 million and $1,059.7 million, respectively. WESCO had $438.7 million available under the Revolving Credit facility at December 31, 2015, after giving effect to outstanding letters and international lines of credit, as compared to approximately $497.5 million at December 31, 2014.

International Lines of Credit

Certain foreign subsidiaries of WESCO have entered into uncommitted lines of credit, which serve as overdraft facilities, to support local operations. The maximum borrowing limit varies by facility and ranges between $2.0 million and $19.0 million. The applicable interest rate for borrowings under these lines of credit varies by country and is governed by the applicable loan agreement. The international lines of credit are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by WESCO Distribution. Accordingly, these lines directly reduce availability under the Revolving Credit Facility.

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6.0% Convertible Senior Debentures due 2029

On August 27, 2009, WESCO International completed an exchange offer pursuant to which it issued $345.0 million in aggregate principal amount of 6.0% Convertible Senior Debentures due 2029 (the “2029 Debentures”) in exchange for approximately $299.7 million and $57.7 million in aggregate principal amounts of its previously outstanding 1.75% Convertible Senior Debentures due 2026 and 2.625% Convertible Senior Debentures due 2025, respectively. As a result of the debt exchange, WESCO recorded a gain of $6.0 million, which included the write-off of debt issuance costs. The 2029 Debentures were issued pursuant to an Indenture dated August 27, 2009 (the “2009 Indenture”), with The Bank of New York Mellon, as trustee, and are unconditionally guaranteed on an unsecured senior subordinate basis by WESCO Distribution.

WESCO separately accounts for the liability and equity components of its 2029 Debentures in a manner that reflects its non-convertible debt borrowing rate. WESCO utilized an interest rate of 13.875% to reflect the non-convertible debt borrowing rate of its offering upon issuance, which was determined based on discussions with its financial institutions and a review of relevant market data, and resulted in a $181.2 million discount to the 2029 Debenture balance and a net increase in additional capital of $106.5 million. In addition, the financing costs related to the issuance of the 2029 Debentures were allocated between the debt and equity components. WESCO is amortizing the debt discount and financing costs over the life of the instrument. For the years ended December 31, 2015, 2014 and 2013, non-cash interest expense for the amortization of the debt discount and deferred financing fees was $4.2 million, $3.8 million and $3.2 million, respectively. The amortization of the debt discount and deferred financing fees will approximate $4.8 million in 2016, $5.4 million in 2017, $6.1 million in 2018, $6.9 million in 2019, and $7.9 million in 2020.

While the 2029 Debentures accrue interest at an effective interest rate of 13.875% (as described above), the coupon interest rate of 6.0% per annum is payable in cash semi-annually in arrears on each March 15 and September 15. Beginning with the six-month period commencing September 15, 2016, WESCO International will also pay contingent interest during any six-month period in which the trading price of the 2029 Debentures for each of the five trading days ending on the second trading day immediately preceding the first day of the applicable six-month interest period equals or exceeds 120% of the principal amount of the 2029 Debentures. During any six-month period when contingent interest shall be payable, the contingent interest payable per $1,000 principal amount of 2029 Debentures will equal 0.25% of the average trading price of $1,000 principal amount of the 2029 Debentures during the five trading days ending on the second trading day immediately preceding the first day of the applicable six-month interest period. The contingent interest feature is an embedded derivative that is not considered clearly and closely related to the host contract. Accordingly, the contingent interest component had no significant value at December 31, 2015 or 2014.

The 2029 Debentures are convertible into cash, and in certain circumstances, shares of WESCO International's common stock, $0.01 par value, at any time on or after September 15, 2028, or prior to September 15, 2028 in certain circumstances. The 2029 Debentures will be convertible based on an initial conversion rate of 34.6433 shares of common stock per $1,000 principal amount of the 2029 Debentures (equivalent to an initial conversion price of approximately $28.87 per share). The conversion rate and conversion price may be adjusted under certain circumstances.

At any time on or after September 15, 2016, the Company may redeem all or a part of the 2029 Debentures plus accrued and unpaid interest (including contingent interest and additional interest, if any) to, but not including, the redemption date. If WESCO International undergoes certain fundamental changes, as defined in the 2009 Indenture, prior to maturity, holders of the 2029 Debentures will have the right, at their option, to require WESCO International to repurchase for cash some or all of their 2029 Debentures at a repurchase price equal to 100% of the principal amount of the 2029 Debentures being repurchased, plus accrued and unpaid interest (including contingent interest and additional interest, if any) to, but not including, the repurchase date.

The following table sets forth the components of WESCO's outstanding convertible debenture indebtedness:

	December 31, 2015				December 31, 2014
	Principal Balance	Discount		Net Carrying Amount	Principal Balance	Discount		Net Carrying Amount
(In thousands)
2029 Convertible Debentures	344,873	(163,316	)	181,557	344,895	(167,257	)	177,638

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Covenant Compliance

We were in compliance with all relevant covenants contained in our debt agreements as of December 31, 2015.

Cash Flow

An analysis of cash flows for 2015 and 2014 follows:

Operating Activities. Cash provided by operating activities for 2015 totaled $283.1 million, compared with $251.2 million of cash generated in 2014. Cash provided by operating activities included net income of $208.4 million and adjustments to net income totaling $121.2 million. Other sources of cash in 2015 were generated from decreases in other accounts receivable of $57.2 million, trade receivables of $40.1 million and inventory of $2.4 million. Primary uses of cash in 2015 included a $66.8 million decrease in other current and noncurrent liabilities, a $55.9 million decrease in accounts payable, a $15.0 million decrease in accrued payroll and benefit costs, and a $8.5 million increase in prepaid expenses and other noncurrent assets. In 2014, primary sources of cash were net income of $275.4 million and adjustments to net income totaling $83.9 million. Other sources of cash in 2014 were generated from increases in accounts payable of $37.6 million, accrued payroll and benefit cost of $7.6 million, and other current and noncurrent liabilities of $11.2 million. Primary uses of cash in 2014 included a $89.0 million increase in trade receivables, a $36.8 million increase in inventory, a $27.0 million increase in prepaid expenses and other noncurrent assets, and a $11.7 million increase in other accounts receivable.

Investing Activities. Net cash used in investing activities in 2015 was $170.2 million, compared with $144.1 million of net cash used in 2014. Capital expenditures were $21.7 million and $20.5 million in 2015 and 2014, respectively. Proceeds from the sale of assets were $3.1 million and $15.0 million in 2015 and 2014, respectively. During 2015, the Company paid $151.6 million, primarily to acquire Hill Country and Needham. During 2014, the Company paid $133.8 million to acquire LaPrairie, Hazmasters and Hi-Line. Acquisition payments in 2014 also included a post-close payment to EECOL in the amount of $4.8 million.

Financing Activities. Net cash used in financing activities in 2015 was $67.8 million, compared with $95.5 million in 2014. During 2015, financing activities consisted of borrowings and repayments of $1,276.0 million and $1,209.0 million, respectively, related to our Revolving Credit Facility, borrowings and repayments of $252.6 million and $157.6 million, respectively, related to our Receivables Facility, and repayments of $69.2 million related to our Term Loan Facility. Financing activities in 2015 also included borrowings and repayments on our various international lines of credit of $102.0 million and $100.3 million, respectively. Additionally, financing activities in 2015 included the repurchase of $155.8 million of the Company's common stock, $150.0 million of which was pursuant to the repurchase plan announced on December 17, 2014. During 2014, financing activities consisted of borrowings and repayments of $1,046.5 million and $1,059.7 million, respectively, related to our Revolving Credit Facility, borrowings and repayments of $122.1 million and $145.7 million, respectively, related to our Receivables Facility, repayments of $38.8 million related to our Term Loan Facility. Financing activities in 2014 also included borrowings and repayments on our various international lines of credit of $71.3 million and $57.8 million, respectively.

Contractual Cash Obligations and Other Commercial Commitments

The following summarizes our contractual obligations, including interest, at December 31, 2015 and the effect such obligations are expected to have on liquidity and cash flow in future periods.

	2016		2017 to 2018		2019 to 2020		2021 - After		Total
(In millions)
Contractual cash obligations (including interest):
Debt, excluding debt discount	$	44.3	$	526.2	$	250.0	$	845.0	$	1,665.5
Interest on indebtedness(1)	64.8		122.9		103.5		206.8		498.0
Non-cancelable operating leases	56.6		88.4		52.0		53.2		250.2
Total contractual cash obligations	$	165.7	$	737.5	$	405.5	$	1,105.0	$	2,413.7

(1)Interest on the variable rate debt was calculated using the rates and balances outstanding at December 31, 2015.

Purchase orders for inventory requirements and service contracts are not included in the table above. Generally, our purchase orders and contracts contain clauses allowing for cancellation. We do not have significant agreements to purchase material or goods that would specify minimum order quantities. Also, we do not consider liabilities for uncertain tax benefits to be contractual obligations requiring disclosure due to the uncertainty surrounding the ultimate settlement and timing of these liabilities. As such, we have not included liabilities for uncertain tax benefits of $6.5 million in the table above.

31

Inflation

The rate of inflation, as measured by changes in the producer price index, affects different commodities, the cost of products purchased and ultimately the pricing of our different products and product classes to our customers. Our pricing related to inflation did not have a measurable impact on our sales revenue for the year ended December 31, 2015. Historically, price changes from suppliers have been consistent with inflation and have not had a material impact on the results of operations.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first quarter are affected by a reduced level of activity. Sales during the second, third and fourth quarters are generally 5 - 7% higher than the first quarter. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction our sales by quarter have varied significantly from this pattern.

Impact of Recently Issued Accounting Standards

See Note 2 of our Notes to the Consolidated Financial Statements for information regarding the effect of new accounting pronouncements.

Item 7A. Quantitative and Qualitative Disclosures about Market Risks.

Foreign Currency Risks

Approximately 25% of our sales in 2015 were made by our foreign subsidiaries located in North America, South America, Europe, Africa, Asia and Australia and are denominated in foreign currencies. We may establish additional foreign subsidiaries in the future. Accordingly, we may derive a larger portion of our sales from international operations, and a portion of these sales may be denominated in foreign currencies. As a result, our future operating results could become subject to fluctuations in the exchange rates of those currencies in relation to the U.S. dollar. Furthermore, to the extent that we engage in international sales denominated in U.S. dollars, an increase in the value of the U.S. dollar relative to foreign currencies could make our products less competitive in international markets. We have monitored and will continue to monitor our exposure to currency fluctuations.

Interest Rate Risk

Fixed Rate Borrowings: Approximately 51% of our debt portfolio is comprised of fixed rate debt. At various times, we have refinanced our debt to mitigate the impact of interest rate fluctuations. As the 2021 Notes and 2029 Debentures were issued at fixed rates, interest expense would not be impacted by interest rate fluctuations, although market value would be. The fair value of the 2029 Debentures was $514.2 million, at December 31, 2015. For the 2021 Notes, fair value approximated carrying value.(see Note 7 to the Consolidated Financial Statements).

Floating Rate Borrowings: The Company's variable rate borrowings at December 31, 2015 were comprised of the amounts outstanding under the Term Loan Facility, Receivables Facility, Revolving Credit Facility, and the international lines of credit. The fair value of these debt instruments at December 31, 2015 approximated carrying value, which totaled $818.1 million. We entered into the Term Loan Facility on December 12, 2012 and the proceeds were primarily used to finance the acquisition of EECOL. Borrowings under the U.S. sub-facility of the term loans due 2019 bear interest at 0.75% or, if greater, the applicable LIBOR (London Interbank Offered Rate) or base rates plus applicable margins and therefore are subject to fluctuations in interest rates. We borrow under our Revolving Credit Facility and Receivables Facility for general corporate purposes, including working capital requirements and capital expenditures. Borrowings under our Revolving Credit Facility bear interest at the applicable LIBOR / CDOR (Canadian Dealer Offered Rate) or base rates plus applicable margins, whereas borrowings under the Receivables Facility bear interest at the 30 day LIBOR plus applicable margins. A 100 basis point increase or decrease in interest rates would not have a significant impact on future earnings under our current capital structure.

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Item 8. Financial Statements and Supplementary Data.

The information required by this item is set forth in our Consolidated Financial Statements contained in this Annual Report on Form 10-K. Specific financial statements can be found at the pages listed below:

	PAGE
Report of Independent Registered Public Accounting Firm	34
Consolidated Balance Sheets as of December 31, 2015 and 2014	35
Consolidated Statements of Income and Comprehensive Income (Loss) for the years ended
December 31, 2015, 2014 and 2013	36
Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2015, 2014 and 2013	37
Consolidated Statements of Cash Flows for the years ended December 31, 2015, 2014 and 2013	38
Notes to Consolidated Financial Statements	39

33

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of WESCO International, Inc.:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income and comprehensive (loss) income, stockholders’ equity and cash flows present fairly, in all material respects, the financial position of WESCO International, Inc. and its subsidiaries at December 31, 2015 and 2014, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the accompanying index presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included inManagement's Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on the Company's internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’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 of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Pittsburgh, Pennsylvania

February 22, 2016

34

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS
	December 31,
	2015			2014
	(In thousands, except share data)
Assets
Current Assets:
Cash and cash equivalents	$	160,279		$	128,319
Trade accounts receivable, net of allowance for doubtful accounts of $22,587 and $21,084 in 2015 and 2014, respectively	1,075,257			1,117,420
Other accounts receivable	81,242			138,745
Inventories	810,067			819,502
Current deferred income taxes (Note 9)	8,455			35,916
Income taxes receivable	73,814			56,162
Prepaid expenses and other current assets	48,420			54,274
Total current assets	2,257,534			2,350,338
Property, buildings and equipment, net (Note 6)	166,739			182,725
Intangible assets, net (Note 3)	403,649			429,840
Goodwill (Note 3)	1,681,662			1,735,440
Deferred income taxes (Note 9)	18,221			22,414
Other assets	59,620			33,680
Total assets	$	4,587,425		$	4,754,437
Liabilities and Stockholders’ Equity
Current Liabilities:
Accounts payable	$	715,519		$	765,135
Accrued payroll and benefit costs (Note 11)	51,258			67,935
Short-term debt (Note 7)	43,314			46,787
Current portion of long-term debt (Note 7)	1,025			2,343
Bank overdrafts	34,170			36,048
Income taxes payable	29,212			23,136
Other current liabilities	73,303			122,488
Total current liabilities	947,801			1,063,872
Long-term debt, net of discount of $164,342 and $170,367 in 2015 and 2014, respectively (Note 7)	1,456,761			1,366,430
Deferred income taxes (Note 9)	364,838			346,743
Other noncurrent liabilities	44,154			49,227
Total liabilities	$	2,813,554		$	2,826,272
Commitments and contingencies (Note 13)
Stockholders’ Equity:
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding (Note 8)	—			—
Common stock, $.01 par value; 210,000,000 shares authorized, 58,597,380 and 58,400,736 shares issued and 42,173,790 and 44,489,989 shares outstanding in 2015 and 2014, respectively (Note 8)	586			584
Class B nonvoting convertible common stock, $.01 par value; 20,000,000 shares authorized, 4,339,431 issued and no shares outstanding in 2015 and 2014, respectively	43			43
Additional capital	1,117,421			1,102,369
Retained earnings	1,854,456			1,643,914
Treasury stock, at cost; 20,763,021 and 18,250,178 shares in 2015 and 2014, respectively	(772,679		)	(616,366		)
Accumulated other comprehensive income	(423,155		)	(201,892		)
Total WESCO International stockholders' equity	1,776,672			1,928,652
Noncontrolling interest	(2,801		)	(487		)
Total stockholders’ equity	1,773,871			1,928,165
Total liabilities and stockholders’ equity	$	4,587,425		$	4,754,437

The accompanying notes are an integral part of the consolidated financial statements.

35

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS)
	Year Ended December 31,
	2015			2014			2013
	(In thousands, except per share data)
Net sales	$	7,518,487		$	7,889,626		$	7,513,342
Cost of goods sold (excluding depreciation and amortization below)	6,024,826			6,278,584			5,967,892
Selling, general and administrative expenses	1,054,951			1,076,808			996,810
Depreciation and amortization	64,968			68,017			67,642
Income from operations	373,742			466,217			480,998
Interest expense, net	69,832			82,064			85,607
Loss on debt extinguishment (Note 7)	—			—			13,225
Loss on sale of business	—			—			2,315
Income before income taxes	303,910			384,153			379,851
Provision for income taxes (Note 9)	95,537			108,716			103,333
Net income	208,373			275,437			276,518
Less: Net (loss) income attributable to noncontrolling interest	(2,314		)	(469		)	88
Net income attributable to WESCO International, Inc.	$	210,687		$	275,906		$	276,430
Other comprehensive (loss) income:
Foreign currency translation adjustment	(225,795		)	(120,293		)	(83,172		)
Post retirement benefit plan adjustment (Note 11)	4,532			(5,056		)	7,673
Comprehensive (loss) income attributable to WESCO International, Inc.	$	(10,576	)	$	150,557		$	200,931
Earnings per share attributable to WESCO International, Inc. (Note 10)
Basic	$	4.85		$	6.21		$	6.26
Diluted	$	4.18		$	5.18		$	5.25

The accompanying notes are an integral part of the consolidated financial statements.

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
																							Accumulated Other
						Class B						Retained											Comprehensive
	Common Stock					Common Stock			Additional			Earnings			Treasury Stock					Noncontrolling			Income
(In thousands)	Amount			Shares		Amount		Shares	Capital			(Deficit)			Amount			Shares		Interest			(Loss)
Balance, December 31, 2012	$	579		57,824,548		$	43	4,339,431	$	1,065,550		$	1,092,719		$	(604,050	)	(18,102,528	)	$	(106	)	$	(1,044	)
Exercise of stock-based awards, including tax benefit of $2,022	3			304,441					2,052						(6,380		)	(76,747	)
Stock-based compensation expense									15,917
Conversion of 2029 debentures	(1		)	425					(2		)
Tax withholding related to vesting of restricted stock units and retirement of common stock	—			(22,110	)				(745		)	(763		)
Noncontrolling interest																				88
Net income												276,430
Translation adjustment																							(83,172		)
Benefit plan adjustments, net of tax effect of $2,244																							7,673
Balance, December 31, 2013	$	581		58,107,304		$	43	4,339,431	$	1,082,772		$	1,368,386		$	(610,430	)	(18,179,275	)	$	(18	)	$	(76,543	)
Exercise of stock-based awards, including tax benefit of $4,899	3			308,399					5,741						(5,936		)	(70,903	)
Stock-based compensation expense									14,766
Conversion of 2029 debentures	—			134					(1		)
Tax withholding related to vesting of restricted stock units and retirement of common stock	—			(15,101	)				(909		)	(378		)
Noncontrolling interest																				(469		)
Net income												275,906
Translation adjustment																							(120,293		)
Benefit plan adjustments, net of tax effect of $2,447																							(5,056		)
Balance, December 31, 2014	$	584		58,400,736		$	43	4,339,431	$	1,102,369		$	1,643,914		$	(616,366	)	(18,250,178	)	$	(487	)	$	(201,892	)
Exercise of stock-based awards, including tax benefit of $1,403	2			230,206					1,344						(3,300		)	(44,267	)
Stock-based compensation expense									12,899
Conversion of 2029 debentures	—			427					(2		)
Repurchase of common stock									3,013						(153,013		)	(2,468,576	)
Tax withholding related to vesting of restricted stock units and retirement of common stock	—			(33,989	)				(2,202		)	(145		)
Noncontrolling interest																				(2,314		)
Net income												210,687
Translation adjustment																							(225,795		)
Benefit plan adjustments, net of tax effect of $1,661																							4,532
Balance, December 31, 2015	$	586		58,597,380		$	43	4,339,431	$	1,117,421		$	1,854,456		$	(772,679	)	(20,763,021	)	$	(2,801	)	$	(423,155	)

The accompanying notes are an integral part of the consolidated financial statements.

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Year Ended December 31,
	2015			2014			2013
	(In thousands)
Operating Activities:
Net income	$	208,373		$	275,437		$	276,518
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	64,968			68,017			67,642
Stock-based compensation expense	12,899			14,766			15,917
Amortization of debt issuance costs	6,120			4,426			4,880
Amortization of debt discount	6,075			4,136			4,308
Loss on debt extinguishment	—			—			13,229
Gain on sale of property, buildings and equipment	(45		)	(7,733		)	(4,174		)
(Gain) loss on sale of businesses	(1,319		)	—			2,315
Excess tax benefit from stock-based compensation	(1,569		)	(5,705		)	(3,631		)
Interest related to uncertain tax positions, net	(8,739		)	964			599
Deferred income taxes	42,850			4,979			20,634
Changes in assets and liabilities:
Trade receivables, net	40,102			(89,029		)	(30,464		)
Other accounts receivable	57,242			(11,659		)	(42,983		)
Inventories, net	2,410			(36,847		)	(9,339		)
Prepaid expenses and other assets	(8,517		)	(27,020		)	(19,196		)
Accounts payable	(55,914		)	37,587			37,789
Accrued payroll and benefit costs	(15,015		)	7,619			(19,163		)
Other current and noncurrent liabilities	(66,872		)	11,218			260
Net cash provided by operating activities	283,049			251,156			315,141
Investing Activities:
Capital expenditures	(21,658		)	(20,548		)	(27,825		)
Acquisition payments, net of cash acquired	(151,595		)	(138,630		)	—
Proceeds from sale of assets	3,023			14,991			10,807
Other investing activities	—			—			(1,205		)
Net cash used in investing activities	(170,230		)	(144,187		)	(18,223		)
Financing Activities:
Proceeds from issuance of short-term debt	102,033			71,308			72,895
Repayments of short-term debt	(101,353		)	(57,827		)	(58,288		)
Proceeds from issuance of long-term debt	1,528,578			1,168,580			1,429,956
Repayments of long-term debt	(1,435,820		)	(1,244,173		)	(1,682,189		)
Repayment of deferred acquisition payable	—			(29,395		)	—
Debt issuance costs	(3,359		)	(472		)	(12,222		)
Proceeds from the exercise of stock options	—			838			30
Excess tax benefit from stock-based compensation	1,569			5,705			3,631
Repurchase of common stock (Note 10)	(155,805		)	(7,222		)	(7,890		)
Decrease in bank overdrafts	(2,013		)	(1,258		)	(1,954		)
Payments on capital lease obligations	(1,645		)	(1,574		)	(1,488		)
Net cash used in financing activities	(67,815		)	(95,490		)	(257,519		)
Effect of exchange rate changes on cash and cash equivalents	(13,044		)	(6,885		)	(1,773		)
Net change in cash and cash equivalents	31,960			4,594			37,626
Cash and cash equivalents at the beginning of period	128,319			123,725			86,099
Cash and cash equivalents at the end of period	$	160,279		$	128,319		$	123,725
Supplemental disclosures:
Cash paid for interest	$	66,342		$	74,016		$	75,462
Cash paid for taxes	74,213			107,147			90,678
Non-cash investing and financing activities:
Property, buildings and equipment acquired through capital leases	288			1,091			1,970

The accompanying notes are an integral part of the consolidated financial statements.

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION

WESCO International, Inc. ("WESCO International") and its subsidiaries (collectively, “WESCO”), headquartered in Pittsburgh, Pennsylvania, is a full-line distributor of electrical, industrial and communications maintenance, repair and operating (“MRO”) and original equipment manufacturers (“OEM”) products, construction materials, and advanced supply chain management and logistics services used primarily in the industrial, construction, utility and commercial, institutional and government markets. We serve over 80,000 active customers globally through approximately 500 full service branches primarily located in North America, with operations in 14 additional countries, and nine distribution centers located in the United States and Canada.

2. ACCOUNTING POLICIES

Basis of Consolidation

The consolidated financial statements include the accounts of WESCO International, Inc. and all of its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.

Revision

The Consolidated Statements of Stockholders' Equity for the years ended December 31, 2014 and 2013 include certain reclassifications to previously reported amounts to conform to the current period presentation. Specifically, treasury stock and related shares that were previously reported as tax withholding related to vesting of restricted units and retirement of common stock are presented herein as a component of the exercise of stock-based awards. Additionally, the Consolidated Balance Sheet at December 31, 2014, as presented herein, separately reports income taxes payable. Previously, the amount of income taxes payable was reported as a component of other current liabilities.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying disclosures. Although these estimates are based on management’s best knowledge of current events and actions WESCO may undertake in the future, actual results may ultimately differ from the estimates.

Revenue Recognition

Revenues are recognized for product sales when title, ownership and risk of loss pass to the customer or for services when the service is rendered. In the case of stock sales and special orders, a sale occurs at the time of shipment from WESCO's distribution point, as the terms of WESCO’s sales are typically FOB shipping point. In cases where WESCO processes customer orders but ships directly from its suppliers, revenue is recognized once product is shipped and title has passed. In all cases, revenue is recognized once the sales price to the customer is fixed or is determinable and WESCO has reasonable assurance as to the collectability.

In certain customer arrangements, WESCO provides services such as inventory management. WESCO may perform some or all of the following services for customers: determine inventory stocking levels; establish inventory reorder points; launch purchase orders; receive material; pack away material; and pick material for order fulfillment. WESCO recognizes revenue for services rendered during the period based upon a previously negotiated fee arrangement. WESCO also sells inventory to these customers and recognizes revenue at the time title and risk of loss transfers to the customer. The amount of revenue attributed to these services totaled $35.1 million, $31.0 million, and $24.2 million in 2015, 2014 and 2013, respectively.

Selling, General and Administrative Expenses

WESCO includes warehousing, purchasing, branch operations, information services, and marketing and selling expenses in this category, as well as other types of general and administrative costs.

Supplier Volume Rebates

WESCO receives volume rebates from certain suppliers based on contractual arrangements with such suppliers. Volume rebates are included within other accounts receivable in the Consolidated Balance Sheets, and represent the estimated amounts due to WESCO under the rebate provisions of the various supplier contracts. The corresponding rebate income is recorded as a reduction of cost of goods sold. The appropriate level of such income is derived from the level of actual purchases made by WESCO from suppliers. Receivables under the supplier rebate program were $62.6 million at December 31, 2015 and $82.6 million at December 31, 2014. Supplier volume rebate rates have historically ranged between approximately 0.9% and 1.4% of sales depending on market conditions. In 2015, the rebate rate was 1.0%.

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

Shipping and Handling Costs and Fees

WESCO records the costs and fees associated with transporting its products to customers as a component of selling, general and administrative expenses. These costs totaled $59.4 million, $63.6 million and $63.8 million in 2015, 2014 and 2013, respectively.

Cash Equivalents

Cash equivalents are defined as highly liquid investments with original maturities of 90 days or less when purchased.

Asset Securitization

WESCO maintains control of the receivables transferred pursuant to its accounts receivable securitization program (the “Receivables Facility”); therefore, the transfers do not qualify for “sale” treatment. As a result, the transferred receivables remain on the balance sheet, and WESCO recognizes the related secured borrowing. The expenses associated with the Receivables Facility are reported as interest expense in the Consolidated Statements of Income and Comprehensive Income (Loss).

Allowance for Doubtful Accounts

WESCO maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. WESCO has a systematic procedure using estimates based on historical data and reasonable assumptions of collectability made at the local branch level and on a consolidated corporate basis to calculate the allowance for doubtful accounts. If the financial condition of WESCO’s customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The allowance for doubtful accounts was $22.6 million at December 31, 2015 and $21.1 million at December 31, 2014. The total amount recorded as selling, general and administrative expense related to bad debts was $6.1 million, $5.9 million and $2.9 million for 2015, 2014 and 2013, respectively.

Inventories

Inventories primarily consist of merchandise purchased for resale and are stated at the lower of cost or market. Cost is determined principally under the average cost method. WESCO makes provisions for obsolete or slow-moving inventories as necessary to reflect reduction in inventory value. WESCO writes down its inventory to its net realizable value based on internal factors derived from historical analysis of actual losses. Retrospectively, WESCO identifies items at risk of becoming obsolete, which are defined as excess of 36 months supply relative to demand or movement. WESCO then analyzes the ultimate disposition of previously identified excess inventory items when they are sold, returned to supplier, or scrapped. This item by item analysis allows WESCO to develop an estimate of the historical likelihood that an item identified as being in excess supply ultimately becomes obsolete. WESCO applies the estimate to inventory items currently in excess of 36 months supply, and reduces its inventory carrying value by the derived amount. Reserves for excess and obsolete inventories were $24.7 million and $19.9 million at December 31, 2015 and 2014, respectively. The total expense related to excess and obsolete inventories, included in cost of goods sold, was $8.6 million, $6.2 million and $7.5 million for 2015, 2014 and 2013, respectively. WESCO absorbs into the cost of inventory certain overhead expenses related to inventory such as purchasing, receiving and storage and at December 31, 2015 and 2014, $65.0 million and $62.5 million, respectively, of these costs were included in ending inventory.

Other Assets

WESCO amortizes deferred financing fees over the term of the various debt instruments. Deferred financing fees in the amount of $3.4 million were incurred during the year ending December 31, 2015. As of December 31, 2015 and 2014, the amount of other assets related to unamortized deferred financing fees was $17.7 million and $20.7 million, respectively.

Property, Buildings and Equipment

Property, buildings and equipment are recorded at cost. Depreciation expense is determined using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over either their respective lease terms or their estimated lives, whichever is shorter. Estimated useful lives range from five to forty years for leasehold improvements and buildings and three to ten years for furniture, fixtures and equipment.

Capitalized computer software costs are amortized using the straight-line method over the estimated useful life, typically three to five years, and are reported at the lower of unamortized cost or net realizable value.

Expenditures for new facilities and improvements that extend the useful life of an asset are capitalized. Ordinary repairs and maintenance are expensed as incurred. When property is retired or otherwise disposed of, the cost and the related accumulated

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

depreciation are removed from the accounts and any related gains or losses are recorded and reported as selling, general and administrative expenses.

WESCO assesses its long-lived assets for impairment whenever events or changes in circumstances indicate the carrying amount of any such assets may not be fully recoverable. Changes in circumstances include technological advances, changes in our business model, capital structure, economic conditions or operating performance. Our evaluation is based upon, among other things, utilization, serviceability and our assumptions about the estimated future undiscounted cash flows these assets are expected to generate. When the sum of the undiscounted cash flows is less than the carrying value of the asset or asset group, we will recognize an impairment loss to the extent that carrying value exceeds fair value. We apply our best judgment when performing these evaluations.

Upon closure of any branch, asset usefulness and remaining life are evaluated and charges are taken as appropriate. Of WESCO’s $166.7 million net book value of property, plant and equipment as of December 31, 2015, $100.8 million consists of land, buildings and leasehold improvements and are geographically dispersed among WESCO’s 500 branches and nine distribution centers, mitigating the risk of impairment. Approximately $30.9 million of assets consist of computer equipment and capitalized software and are evaluated for use and serviceability relative to carrying value. The remaining fixed assets, mainly furniture and fixtures, warehousing equipment and transportation equipment, are similarly evaluated for serviceability and use.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually during the fourth quarter using information available at the end of September, or more frequently if triggering events occur indicating that their carrying value may not be recoverable. WESCO tests for goodwill impairment on a reporting unit level and the evaluation involves comparing the fair value of each reporting unit with its carrying value. The fair values of the reporting units are determined using a combination of a discounted cash flow analysis and market multiples. Assumptions used for these fair value techniques are based on a combination of historical results, current forecasts, market data and recent economic events. WESCO evaluates the recoverability of indefinite-lived intangible assets using a discounted cash flow analysis based on projected financial information. The determination of fair value involves significant management judgment and could be negatively affected by the current weak market conditions, including the challenging macroeconomic indicators in the markets in which WESCO operates and those where its customers are based. Management applies its best judgment when assessing the reasonableness of financial projections. At December 31, 2015 and 2014, goodwill and indefinite-lived trademarks totaled $1,773.6 million and $1,840.0 million, respectively.

The estimated fair values of most of WESCO's reporting units were at least 25% greater than their respective carrying values. One reporting unit with goodwill of $186.7 million had a fair value that was approximately 5% greater than its carrying value. In performing the quantitative assessment for this reporting unit, managment used revenue growth rates of 2.9% to 5.7%, a terminal growth rate of 3% and a discount rate of 9.3%. Management believes that the terminal growth rate is supported by WESCO's historical growth rate, near-term projections and long-term expected market growth. The discount rate reflects marketplace participants' cost of capital. Had managment used a discount rate that was 25 basis points higher or a terminal growth rate that was 25 basis points lower than those assumed, the fair value of this reporting unit would have continued to exceed its carrying amount.

A possible indicator of goodwill impairment is the relationship of a company’s market capitalization to its book value. As of December 31, 2015, WESCO's market capitalization exceeded its book value and there were no impairment losses identified as a result of our annual test. Fair value determinations require considerable judgment and are sensitive to changes in underlying assumptions and factors. As a result, there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible impairment test will prove to be an accurate prediction of future results.

Definite Lived Intangible Assets

Intangible assets are amortized over 2 to 20 years. A portion of intangible assets related to certain customer relationships are amortized using an accelerated method whereas all other intangible assets subject to amortization use a straight-line method that reflects the pattern in which the economic benefits of the respective assets are consumed or otherwise used. Intangible assets are tested for impairment if events or circumstances occur indicating that the respective asset might be impaired.

Insurance Programs

WESCO uses commercial insurance for auto, workers’ compensation, casualty and health claims as a risk-reduction strategy to minimize catastrophic losses. The Company’s strategy involves large deductible policies where WESCO must pay all costs up to the deductible amount. WESCO estimates the reserve based on historical incident rates and costs. The assumptions

41

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

included in developing this accrual include the period of time from incurrence of a claim until the claim is paid by the insurance provider. The total liability related to the insurance programs was $9.8 million and $12.1 million at December 31, 2015 and 2014, respectively.

Income Taxes

WESCO accounts for income taxes under the asset and liability method, which requires the recognition of deferred income taxes for events that have future tax consequences. Under this method, deferred income taxes are recognized (using enacted tax laws and rates) based on the future income tax effects of differences in the carrying amounts of assets and liabilities for financial reporting and tax purposes. The effect of a tax rate change on deferred tax assets and liabilities is recognized in income in the period of change.

WESCO recognizes deferred tax assets at amounts that are expected to be realized. To make such determination, management evaluates all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing temporary differences. A valuation allowance is recognized if it is “more likely than not” that some or all of a deferred tax asset will not be realized. WESCO regularly assesses the realizability of deferred tax assets.

No provision is made for undistributed earnings that are considered to be permanently reinvested to fund growth in foreign markets.

We account for uncertainty in income taxes using a "more-likely-than-not" recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from our estimate. We recognize interest related to uncertain tax benefits as part of interest expense. We recognize penalties related to uncertain tax benefits as part of income tax expense.     

Convertible Debentures

WESCO separately accounts for the liability and equity components of its convertible debentures in a manner that reflects its non-convertible debt borrowing rate. WESCO estimates its non-convertible debt borrowing rate through a combination of discussions with its financial institutions and review of relevant market data. The discounts to the convertible note balances are amortized to interest expense, using the effective interest method, over the implicit life of the Debentures.

Foreign Currency

The local currency is the functional currency for the majority of WESCO’s operations outside the United States. Assets and liabilities of these operations are translated to U.S. dollars at the exchange rate in effect at the end of each period. Income statement accounts are translated at an exchange rate that approximates the average for the period. Translation adjustments arising from the use of differing exchange rates from period to period are included as a component of other comprehensive income (loss) within stockholders’ equity. Gains and losses from foreign currency transactions are included in net income for the period.

Defined Benefit Pension Plan

In connection with the December 14, 2012 acquisition of EECOL, the Company assumed a contributory defined benefit plan covering substantially all Canadian employees of EECOL. The plan provides retirement benefits based on earnings and credited service, and participants contribute 2% of their earnings to the plan.

The Company also assumed EECOL's Supplemental Executive Retirement Plan (SERP), which provides additional pension benefits to certain executives based on earnings, credited service, and executive service. Participants in the SERP contribute 4% of their earnings to the SERP.

Liabilities and expenses for pension benefits are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated cash flows, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, retirement age, and mortality).

The interest rate used to discount future estimated cash flows is determined using a high quality corporate bonds yield curve model developed with the assistance of an external actuary. The cash flows of the plans' projected benefit obligations are discounted using a single equivalent rate derived from yields on high quality corporate bonds. The yield curve model parallels the plans' projected cash flows. The discount rate used to determine benefit obligations for the Canadian pension was 4.2% in 2015. An increase in the discount rate of one quarter percent would decrease the projected benefit obligation by $4.3 million, and a decrease in the discount rate of one quarter percent would increase the projected benefit obligation by $4.8 million. The

42

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

impact of a change in the discount rate of one quarter percent would be either a charge or credit of $0.3 million to earnings in the following year.

The expected long-term rate of return on plan assets is applied to the fair market-related value of plan assets.

Stock-Based Compensation

WESCO's stock-based employee compensation plans are comprised of stock-settled stock appreciation rights, restricted stock units, and performance-based awards. Compensation cost for all stock-based awards is measured at fair value on the date of grant, and compensation cost is recognized, net of forfeitures, over the service period for awards expected to vest. The fair value of stock-settled appreciation rights and performance-based awards with market conditions is determined using the Black-Scholes and Monte Carlo simulation models, respectively. The fair value of restricted stock units with service conditions and performance-based awards with performance conditions is determined by the grant-date closing price of WESCO's common stock. Expected volatilities are based on historical volatility of our common stock. WESCO estimates the expected life of stock-settled stock appreciation rights using historical data pertaining to option exercises and employee terminations. The risk-free rate is based on the U.S. Treasury yields in effect at the time of grant. The forfeiture assumption is based on our historical employee behavior, which we review on an annual basis. No dividends are assumed for stock-based awards.

Treasury Stock

Common stock purchased for treasury is recorded at cost. At the date of subsequent reissue, the treasury stock account is reduced by the cost of such stock, with cost determined on a weighted-average basis.

Fair Value of Financial Instruments

The Company’s financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable and other accrued liabilities, and outstanding indebtedness. The estimated fair value of the Company’s outstanding indebtedness described in Note 7 at December 31, 2015 and 2014 was $1,821.2 million and $2,177.6 million, respectively. At December 31, 2015 and 2014, the fair value of WESCO’s 2029 Debentures was $514.2 million and $936.1 million, respectively. The reported carrying amounts of WESCO’s other debt instruments approximate their fair values. The Company uses a market approach to fair value all of its debt instruments, utilizing quoted prices in active markets, interest rates and other relevant information generated by market transactions involving similar instruments. For all of the Company's remaining financial instruments, carrying values are considered to approximate fair value due to their short maturities.

Environmental Expenditures

WESCO has facilities and operations that distribute certain products that must comply with environmental regulations and laws. Expenditures for current operations are expensed or capitalized, as appropriate. Expenditures relating to existing conditions caused by past operations, and that do not contribute to future revenue, are expensed. Liabilities are recorded when remedial efforts are probable and the costs can be reasonably estimated.

Recently Adopted Accounting Pronouncements

None.

Recently Issued Accounting Pronouncements

In May 2015, the Financial Accounting Standards Board (FASB) issued updated guidance to remove the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value (NAV) per share practical expedient. The practical expedient criteria differ from the criteria used to categorize other fair value measurements within the hierarchy. Currently, investments valued using the practical expedient are categorized within the fair value hierarchy on the basis of whether the investment is redeemable with the investee at NAV on the measurement date, never redeemable with the investee at NAV, or redeemable with the investee at NAV at a future date. Under this updated guidance, investments for which fair value is measured at NAV per share (or its equivalent) using the practical expedient should not be categorized in the fair value hierarchy. A reporting entity should continue to disclose information on investments for which fair value is measured at net asset value (or its equivalent) as a practical expedient to help users understand the nature and risks of the investments and whether the investments, if sold, are probable of being sold at amounts different from net asset value. The guidance is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years, and should be applied retrospectively. The retrospective approach requires that an investment for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy in all periods presented in an entity’s financial statements. Earlier application is permitted. Management has not yet evaluated the future impact of this guidance on WESCO's consolidated financial statements and notes thereto.

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers: Deferral of Effective Date. The Company previously reported that in May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides a framework for addressing revenue recognition issues and replaces almost all existing revenue recognition guidance in current U.S. generally accepted accounting principles. The core principle of ASU 2014-09 is for companies to recognize revenue for the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. ASU 2014-09 will also result in enhanced disclosures about revenue, provide guidance for transactions that were not previously addressed comprehensively, and improve guidance for multiple-element arrangements. The amendments in ASU 2015-14 defer the effective date of the new revenue recognition guidance to annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is permitted to the original effective date of December 15, 2016, including interim periods within that reporting period. Management is currently evaluating the future impact of this guidance on WESCO's consolidated financial statements and notes thereto.

In August 2015, the FASB issued ASU 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. The Company previously reported that in April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, which simplifies the presentation of debt issuance costs by requiring that debt issuance costs related to a recognized liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The amendments in ASU 2015-15 address the absence of authoritative guidance within ASU 2015-03 for debt issuance costs related to line-of-credit arrangements such that the SEC staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. ASU 2015-15 and ASU 2015-03 are effective for financial statements of public business entities issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been previously issued. The adoption of this guidance is not expected to have a material impact on WESCO's financial position, results of operations or cash flows.

In September 2015, the FASB issued ASU 2015-16, Business Combinations: Simplifying the Accounting for Measurement-Period Adjustments. The amendments in this ASU require that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined; calculated as if the accounting had been completed at the acquisition date. For public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments in this ASU should be applied prospectively with earlier application permitted for financial statements that have not been issued. The adoption of this guidance will not have a material impact on WESCO's financial position, results of operations or cash flows.

In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes. This ASU is part of the FASB's simplification initiative directed at reducing complexity in accounting standards. To simplify presentation, the new guidance requires that all deferred tax assets and liabilities, along with any related valuation allowance, be classified as noncurrent on the balance sheet. As a result, each jurisdiction will now only have one net noncurrent deferred tax asset or liability. The guidance does not change the existing requirement that only permits offsetting within a jurisdiction. For public business entities, the amendments are effective in fiscal years beginning after December 15, 2016, including interim periods within those years. Early adoption is permitted for all entities as of the beginning of an interim or annual reporting period. The guidance may be applied either prospectively, for all deferred tax assets and liabilities, or retrospectively (i.e., reclassifying the comparative balance sheet). Management is currently evaluating the impact of this accounting standard on the Company's consolidated financial statements and notes thereto, and expects to adopt this guidance in the fiscal year ending December 31, 2016.

Other pronouncements issued by the FASB or other authoritative accounting standards groups with future effective dates are either not applicable or are not expected to be significant to WESCO’s financial position, results of operations or cash flows.

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3. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The following table sets forth the changes in the carrying amount of goodwill:

	Year Ended December 31,
	2015			2014
	(In thousands)
Beginning balance January 1	$	1,735,440		$	1,734,391
Foreign currency exchange rate changes	(113,719		)	(61,347		)
Additions to goodwill for acquisitions	59,941			62,396
Ending balance December 31	$	1,681,662		$	1,735,440

WESCO has never recorded an impairment loss related to goodwill.

Intangible Assets

The components of intangible assets are as follows:

	December 31, 2015								December 31, 2014
	Life	Gross Carrying Amount (1)		Accumulated Amortization (1)			Net Carrying Amount		Gross Carrying Amount (1)		Accumulated Amortization (1)			Net Carrying Amount
	(In thousands)
Intangible assets:
Trademarks	Indefinite	$	91,945	$	—		$	91,945	$	104,532	$	—		$	104,532
Trademarks	4-15	22,793		(1,581		)	21,212		5,085		(594		)	4,491
Non-compete agreements	2-7	429		(201		)	228		295		(95		)	200
Customer relationships	2-20	339,820		(95,634		)	244,186		342,224		(76,267		)	265,957
Distribution agreements	10-19	38,726		(16,595		)	22,131		40,222		(14,340		)	25,882
Patents	10	48,310		(24,363		)	23,947		48,310		(19,532		)	28,778
		$	542,023	$	(138,374	)	$	403,649	$	540,668	$	(110,828	)	$	429,840

⁽¹⁾  Excludes the original cost and accumulated amortization of fully-amortized intangible assets.

Amortization expense related to intangible assets totaled $36.9 million, $39.0 million and $38.6 million for the years ended December 31, 2015, 2014 and 2013, respectively.

The following table sets forth the estimated amortization expense for intangibles for the next five years:

	Estimated
	Amortization
	Expense
For the year ended December 31,	(In thousands)
2016	$	36,795
2017	35,970
2018	34,539
2019	33,341
2020	30,291

WESCO has never recorded an impairment loss related to intangible assets.

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4. CONCENTRATIONS OF CREDIT RISK AND SIGNIFICANT SUPPLIERS

WESCO distributes its products and services and extends credit to a large number of customers in the industrial, construction, utility, commercial, institutional, and governmental markets. Therefore, WESCO could potentially incur risk due to supplier concentration. Our largest supplier is Eaton Corporation, accounting for approximately 11% of our purchases in 2015 and 12% in 2014 and 2013, respectively. Based upon WESCO’s broad customer base, the Company has concluded that it has no material credit risk as a result of customer concentration.

5. ACQUISITIONS

The following table sets forth the consideration paid for acquisitions:

Year Ended December 31,	2015			2014			2013
(In thousands)
Details of acquisitions:
Fair value of assets acquired	$	192,099		$	153,597		$	—
Fair value of liabilities assumed	(39,836		)	(19,772		)	—
Cash paid for acquisitions	$	152,263		$	133,825		$	—
Supplemental cash flow disclosure related to acquisitions:
Cash paid for acquisitions	$	152,263		$	133,825		$	—
Less: cash acquired	(668		)	—			—
Cash paid for acquisitions, net of cash acquired	$	151,595		$	133,825		$	—

The fair values of assets acquired and liabilities assumed during the year ended December 31, 2015, which are primarily for the acquisitions of Hill Country Electric Supply, LP ("Hill Country") and Needham Electric Supply Corporation ("Needham"), are based upon preliminary calculations and valuations. WESCO's estimates and assumptions for its preliminary purchase price allocations are subject to change as it obtains additional information for its estimates during the respective measurement periods (up to one year from the respective acquisition dates).

Acquisition of Needham Electric Supply Corporation

On October 30, 2015, WESCO Distribution, Inc. completed the acquisition of Needham, an electrical distributor focused on the commercial construction and lighting national account markets from 24 locations in Massachusetts, New Hampshire and Vermont with approximately $115 million in annual sales. WESCO funded the purchase price paid at closing with cash and borrowings under its Revolving Credit Facility. The purchase price was allocated to the respective assets and liabilities based upon their estimated fair values as of the acquisition date. The preliminary fair value of intangibles was estimated by management and the allocation resulted in intangible assets of $31.0 million and goodwill of $35.7 million. The intangible assets include customer relationships of $24.5 million amortized over 12 and 14 years, and trademarks of $6.5 million amortized over 13 years. No residual value is estimated for the intangible assets being amortized. Management believes that the majority of goodwill is deductible for tax purposes.

Acquisition of Hill Country Electric Supply, LP

On May 1, 2015, WESCO Distribution, Inc. completed the acquisition of Hill Country, an electrical distributor focused on the commercial construction market from nine locations in Central and South Texas with approximately $140 million in annual sales. WESCO funded the purchase price paid at closing with borrowings under its prior revolving credit facility. The purchase price was allocated to the respective assets and liabilities based upon their estimated fair values as of the acquisition date. The preliminary fair value of intangibles was estimated by management and the allocation resulted in intangible assets of $21.1 million and goodwill of $15.8 million. The intangible assets include customer relationships of $13.1 million amortized over 11 years, non-compete agreements of $0.2 million amortized over 5 years, and trademarks of $7.8 million amortized over 12 years. No residual value is estimated for the intangible assets being amortized. Management believes that the majority of goodwill is deductible for tax purposes.

Acquisitions of LaPrairie, Inc., Hazmasters, Inc. and Hi-Line Utility Supply

On February 1, 2014, WESCO Distribution, Inc., through its wholly-owned Canadian subsidiary, completed the acquisition of LaPrairie, Inc. ("LaPrairie"), a wholesale distributor of electrical products with approximately $30 million in annual sales servicing the transmission, distribution, and substation needs of utilities and utility contractors from a single location in Newmarket, Ontario. WESCO funded the purchase price paid at closing with cash. The purchase price was allocated to the

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respective assets and liabilities based upon their estimated fair values as of the acquisition date. The fair value of intangibles was determined by management and the allocation resulted in intangible assets of $11.0 million and goodwill of $8.9 million. The majority of goodwill is deductible for tax purposes.

On March 17, 2014, WESCO Distribution, Inc., through its wholly-owned Canadian subsidiary, completed the acquisition of Hazmasters, Inc. ("Hazmasters"), a leading independent Canadian distributor of safety products with approximately $80 million in annual sales servicing customers in the industrial, construction, commercial, institution, and government markets from 14 branches across Canada. WESCO funded the purchase price paid at closing with cash and borrowings under its prior revolving credit facility. The purchase price was allocated to the respective assets and liabilities based upon their estimated fair values as of the acquisition date. The fair value of intangibles was estimated by management and the allocation resulted in intangible assets of $28.1 million and goodwill of $29.5 million, which is not deductible for tax purposes.

On June 11, 2014, WESCO Distribution, Inc., completed the acquisition of Hi-Line Utility Supply ("Hi-Line"), a provider of utility MRO and safety products, as well as rubber goods testing and certification services, with approximately $30 million in annual sales from locations in Chicago, Illinois and Millbury, Massachusetts. WESCO funded the purchase price paid at closing with cash. The purchase price was allocated to the respective assets and liabilities based upon their estimated fair values as of the acquisition date. The fair value of intangibles was estimated by management and the allocation resulted in intangible assets of $14.2 million and goodwill of $24.0 million. The majority of goodwill is deductible for tax purposes.

For the acquisitions of LaPrairie, Hazmasters, and Hi-Line that were made in 2014, the intangible assets include customer relationships of $38.9 million amortized over 2 to 12 years, supplier relationships of $3.2 million amortized over 10 years, trademarks of $10.9 million, and other intangibles of $0.3 million. Certain trademarks have been assigned an indefinite life while others are amortized over 5 years and 10 years. No residual value is estimated for the intangible assets being amortized.

6. PROPERTY, BUILDINGS AND EQUIPMENT

The following table sets forth the components of property, buildings and equipment:

	As of December 31,
	2015			2014
	(In thousands)
Buildings and leasehold improvements	$	118,520		$	126,465
Furniture, fixtures and equipment	176,247			176,302
Software costs	86,259			77,288
	381,026			380,055
Accumulated depreciation and amortization	(243,005		)	(229,196		)
	138,021			150,859
Land	26,121			30,818
Construction in progress	2,597			1,048
	$	166,739		$	182,725

Depreciation expense was $17.8 million, $18.5 million and $18.2 million, and capitalized software amortization was $10.3 million, $10.5 million and $10.8 million, in 2015, 2014 and 2013, respectively. The unamortized software cost was $24.5 million and $24.1 million as of December 31, 2015 and 2014, respectively. Furniture, fixtures and equipment include capitalized leases of $12.5 million and $13.2 million and related accumulated amortization of $8.3 million and $7.3 million as of December 31, 2015 and 2014, respectively.

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7. DEBT

The following table sets forth WESCO’s outstanding indebtedness:

	As of December 31,
	2015			2014
	(In thousands)
Term Loan Facility, less debt discount of $1,026 and $3,110 in 2015 and 2014, respectively	$	173,724		$	249,235
5.375% Senior Notes due 2021	500,000			500,000
Accounts Receivable Securitization Facility	525,000			430,000
Revolving Credit Facility	75,000			8,000
International lines of credit	43,314			46,787
6.0% Convertible Senior Debentures due 2029, less debt discount of $163,316 and $167,257 in 2015 and 2014, respectively	181,557			177,638
Capital leases	2,505			3,891
Other notes	—			9
Total debt	1,501,100			1,415,560
Less current and short-term portion	(44,339		)	(49,130		)
Total long-term debt	$	1,456,761		$	1,366,430

Term Loan Facility

On December 12, 2012, WESCO Distribution, as U.S. borrower, WDCC Enterprises Inc. ("WDCC" and together with WESCO Distribution, the “Borrowers”), as Canadian borrower, and WESCO International entered into a Term Loan Agreement (the “Term Loan Agreement”) among WESCO Distribution, WDCC, the Company, the lenders party thereto and Credit Suisse AG Cayman Islands Branch, as administrative agent and as collateral agent.

The Term Loan Agreement provided a seven-year term loan facility (the “Term Loan Facility”), which consisted of two separate sub-facilities: (i) a Canadian sub-facility in an aggregate principal amount of CAD $150 million, issued at a 2.0% discount and (ii) a U.S. sub-facility in an aggregate principal amount of $700 million, issued at a 1.0% discount. The proceeds of the Term Loan Facility were used to finance the acquisition of EECOL, and to pay fees and expenses incurred in connection with the acquisition and certain other transactions. Subject to the terms of the Term Loan Agreement, the Borrowers may request incremental term loans from time to time in an aggregate principal amount not to exceed at any time $300 million, with an equivalent principal amount in U.S. Dollars being calculated for any incremental term loan denominated in Canadian Dollars.

On November 19, 2013, the Borrowers and WESCO International entered into an amendment (the “Term Loan Amendment”) to the Term Loan Agreement. The Term Loan Amendment, among other things, reduced the applicable margin on U.S. term loans by 0.50% and the LIBOR floor applicable to the U.S. sub-facility from 1.00% to 0.75%. The modified pricing terms were effective December 13, 2013.

On November 26, 2013, WESCO Distribution sold $500 million aggregate principal amount of 5.375% Senior Notes due 2021 (the “2021 Notes”), and used the net proceeds plus excess cash to prepay $500 million under the Company's U.S. sub-facility of the Term Loan Facility (see discussion below under “5.375% Senior Notes due 2021” for additional information). The prepayment satisfied all remaining quarterly repayment obligations under the U.S. sub-facility. As a result, the Company recorded a non-cash pre-tax loss on debt extinguishment of $13.2 million in the fourth quarter of 2013. WESCO will amortize the remaining debt discount and financing costs over the life of the instrument. As of December 31, 2015, the amount outstanding under the U.S. sub-facility was $174.8 million. The Canadian sub-facility was fully repaid in 2015 using cash provided by Canadian operations.

Borrowings under the Term Loan Facility bear interest at base rates plus applicable margins. At December 31, 2015, the interest rate on borrowings under the U.S. sub-facility was 3.75%. At December 31, 2014, the interest rates on borrowings under the Canadian and U.S. sub-facilities were approximately 5.3% and 3.75%, respectively. To the extent not previously paid, the outstanding U.S. sub-facility will become due and payable on December 12, 2019, with any unpaid incremental term loans becoming due and payable on the respective maturity dates applicable to those incremental term loans. At any time or from time to time, the Borrowers may prepay borrowings under the Term Loan Facility in whole or in part without premium or penalty. The Borrowers' obligations under the Term Loan Facility are secured by substantially all of the assets of the Borrowers, the

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Company and certain of the Company's other subsidiaries; provided that, with respect to borrowings under the U.S. sub-facility, the collateral does not include assets of certain foreign subsidiaries or more than 65% of the issued and outstanding equity interests in certain foreign subsidiaries.

The Term Loan Facility contains customary affirmative and negative covenants for credit facilities of this type. The Term Loan Facility also provides for customary events of default.

5.375% Senior Notes due 2021

In November 2013, WESCO Distribution issued $500 million aggregate principal amount of 2021 Notes through a private offering exempt from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”). The 2021 Notes were issued at 100% of par and are governed by an indenture (the “Indenture”) entered into on November 26, 2013 with WESCO International and U.S. Bank National Association, as trustee. The 2021 Notes are unsecured senior obligations of WESCO Distribution and are guaranteed on a senior unsecured basis by WESCO International. The 2021 Notes bear interest at a stated rate of 5.375%, payable semi-annually in arrears on June 15 and December 15 of each year. In addition, WESCO recorded deferred financing fees related to the issuance of the 2021 Notes totaling $8.2 million, which are being amortized over the life of the notes. The 2021 Notes mature on December 15, 2021. The net proceeds of the 2021 Notes were used to prepay a portion of the U.S. sub-facility of the term loans due 2019.

Under the terms of a registration rights agreement dated as of November 26, 2013 among WESCO Distribution, Inc., WESCO International, Inc. and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as the representative of the initial purchasers of the 5.375% Notes, WESCO Distribution and WESCO International agreed to register under the Securities Act notes having terms identical in all material respects to the 5.375% Notes (the “5.375% Exchange Notes”) and to make an offer to exchange the 5.375% Exchange Notes for the 5.375% Notes. WESCO Distribution launched the exchange offer on June 12, 2014 and the exchange offer closed on July 17, 2014.

At any time on or after December 15, 2016, WESCO Distribution may redeem all or a part of the 2021 Notes. Between December 15, 2016 and December 14, 2017, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 104.031% of the principal amount. Between December 15, 2017 and December 14, 2018, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 102.688% of the principal amount. Between December 15, 2018 and December 14, 2019, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 101.344% of the principal amount. On and after December 15, 2019, WESCO Distribution may redeem all or a part of the 2021 Notes at a redemption price equal to 100% of the principal amount.

The Indenture governing the 2021 Notes contains customary covenants and customary events of default. In addition, upon a change of control, the holders of 2021 Notes have the right to require WESCO Distribution to repurchase all or any part of the 2021 Notes at a redemption price equal to 101% of the principal amount, plus accrued and unpaid interest.

Mortgage Financing Facility

In 2003, WESCO finalized a mortgage financing facility of $51.0 million. This facility was extinguished with repayments of $26.4 million in the first quarter of 2013. The interest rate on borrowings under this facility was fixed at 6.5%.

Accounts Receivable Securitization Facility

On September 24, 2015, WESCO Distribution, Inc. amended and restated its accounts receivable securitization facility (the "Receivables Facility") pursuant to the terms and conditions of a Fourth Amended and Restated Receivables Purchase Agreement (the “Receivables Purchase Agreement”), by and among WESCO Receivables Corp. (“WESCO Receivables”), WESCO Distribution, Inc., the various purchaser groups from time to time party thereto and PNC Bank, National Association, as Administrator. The Receivables Purchase Agreement amended and restated the receivables purchase agreement entered into on April 13, 2009.

The Receivables Purchase Agreement increased the purchase limit from $500 million to $550 million, with the opportunity to exercise an accordion feature which permits increases in the purchase limit of up to $100 million, extended the term of the Receivables Facility to September 24, 2018 and added and amended certain defined terms. The interest rate spread and commitment fee of the Receivables Facility remained 0.95% and 0.45%, respectively.

Under the Receivables Facility, WESCO sells, on a continuous basis, an undivided interest in all domestic accounts receivable to WESCO Receivables, a wholly owned special purpose entity (the “SPE”). The SPE sells, without recourse, a senior undivided interest in the receivables to financial institutions for cash while maintaining a subordinated undivided interest in the receivables, in the form of overcollateralization. WESCO has agreed to continue servicing the sold receivables for the third-party conduits and financial institutions at market rates; accordingly, no servicing asset or liability has been recorded.

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As of December 31, 2015 and 2014, accounts receivable eligible for securitization totaled approximately $684.7 million and $673.6 million, respectively. The Consolidated Balance Sheets as of December 31, 2015 and 2014 include $525.0 million and $430.0 million, respectively, of account receivable balances legally sold to third parties, as well as borrowings for equal amounts. At December 31, 2015 and 2014, the interest rate on borrowings under this facility was approximately 1.4% and 1.0%, respectively.

Revolving Credit Facility

On September 24, 2015, WESCO International, Inc., WESCO Distribution, Inc. and certain other subsidiaries of the Company entered into a $600 million revolving credit facility (the “Revolving Credit Facility”), which contains a letter of credit sub-facility of up to $125 million, pursuant to the terms and conditions of a Second Amended and Restated Credit Agreement (the "Credit Agreement"). The Revolving Credit Facility contains an accordion feature allowing WESCO Distribution, Inc. to request increases to the borrowing commitments, subject to customary conditions. This accordion feature increased from $100 million to $200 million in the aggregate. The Revolving Credit Facility replaced WESCO Distribution Inc.’s prior revolving credit facility entered into on December 12, 2012.

The Revolving Credit Facility matures in September 2020 and consists of two separate sub-facilities: (i) a Canadian sub-facility with a borrowing limit of up to $400 million, which is collateralized by substantially all assets of WESCO Canada and the other Canadian Borrowers, other than, among other things, real property, in each case, subject to customary exceptions and limitations, and (ii) a U.S sub-facility with a borrowing limit of up to $600 million less the amount of outstanding borrowings under the Canadian sub-facility. The U.S. sub-facility is collateralized by substantially all assets of WESCO Distribution, Inc. and its subsidiaries which are party to the Credit Agreement, other than, among other things, real property and accounts receivable sold or intended to be sold pursuant to the Receivables Purchase Agreement. The applicable interest rate for borrowings under the Revolving Credit Facility includes interest rate spreads based on available borrowing capacity that range between 1.25% and 1.75% for LIBOR-based borrowings and 0.25% and 0.75% for prime rate-based borrowings. At December 31, 2015, the interest rate on borrowings under this facility was approximately 1.7%.

The Credit Agreement requires ongoing compliance with certain customary affirmative and negative covenants. The Credit Agreement also contains customary events of default.

During 2015, WESCO borrowed $1,276.0 million in the aggregate under the Revolving Credit Facility and the prior revolving credit agreement and made repayments in the aggregate amount of $1,209.0 million. During 2014, aggregate borrowings and repayments were $1,046.5 million and $1,059.7 million, respectively. WESCO had $438.7 million available under the Revolving Credit facility at December 31, 2015, after giving effect to outstanding letters and international lines of credit, as compared to approximately $497.5 million at December 31, 2014.

International Lines of Credit

Certain foreign subsidiaries of WESCO have entered into uncommitted lines of credit, which serve as overdraft facilities, to support local operations. The maximum borrowing limit varies by facility and ranges between $2.0 million and $19.0 million. The applicable interest rate for borrowings under these lines of credit varies by country and is governed by the applicable loan agreement. The international lines of credit are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by WESCO Distribution. Accordingly, these lines directly reduce availability under the Revolving Credit Facility.

6.0% Convertible Senior Debentures due 2029

On August 27, 2009, WESCO International completed an exchange offer pursuant to which it issued $345.0 million in aggregate principal amount of 6.0% Convertible Senior Debentures due 2029 (the “2029 Debentures”) in exchange for approximately $299.7 million and $57.7 million in aggregate principal amounts of its previously outstanding 1.75% Convertible Senior Debentures due 2026 and 2.625% Convertible Senior Debentures due 2025, respectively. As a result of the debt exchange, WESCO recorded a gain of $6.0 million, which included the write-off of debt issuance costs. The 2029 Debentures were issued pursuant to an Indenture dated August 27, 2009 (the “2009 Indenture”), with The Bank of New York Mellon, as trustee, and are unconditionally guaranteed on an unsecured senior subordinate basis by WESCO Distribution.

WESCO separately accounts for the liability and equity components of its 2029 Debentures in a manner that reflects its non-convertible debt borrowing rate. WESCO utilized an interest rate of 13.875% to reflect the non-convertible debt borrowing rate of its offering upon issuance, which was determined based on discussions with its financial institutions and a review of relevant market data, and resulted in a $181.2 million discount to the 2029 Debenture balance and a net increase in additional capital of $106.5 million. As of December 31, 2015 and 2014, the net equity included in additional capital related to the 2029 Debentures totaled $106.3 million, respectively. In addition, the financing costs related to the issuance of the 2029 Debentures were allocated between the debt and equity components. WESCO is amortizing the debt discount and financing costs over the life of the instrument. For the years ended December 31, 2015, 2014 and 2013, non-cash interest expense for the amortization of the

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debt discount and deferred financing fees was $4.2 million, $3.8 million and $3.2 million, respectively. The amortization of the debt discount and deferred financing fees will approximate $4.8 million in 2016, $5.4 million in 2017, $6.1 million in 2018, $6.9 million in 2019, and $7.9 million in 2020.

While the 2029 Debentures accrue interest at an effective interest rate of 13.875% (as described above), the coupon interest rate of 6.0% per annum is payable in cash semi-annually in arrears on each March 15 and September 15. Beginning with the six-month period commencing September 15, 2016, WESCO International will also pay contingent interest during any six-month period in which the trading price of the 2029 Debentures for each of the five trading days ending on the second trading day immediately preceding the first day of the applicable six-month interest period equals or exceeds 120% of the principal amount of the 2029 Debentures. During any six-month period when contingent interest shall be payable, the contingent interest payable per $1,000 principal amount of 2029 Debentures will equal 0.25% of the average trading price of $1,000 principal amount of the 2029 Debentures during the five trading days ending on the second trading day immediately preceding the first day of the applicable six-month interest period. The contingent interest feature is an embedded derivative that is not considered clearly and closely related to the host contract. Accordingly, the contingent interest component had no significant value at December 31, 2015 or 2014.

The 2029 Debentures are convertible into cash, and in certain circumstances, shares of WESCO International's common stock, $0.01 par value, at any time on or after September 15, 2028, or prior to September 15, 2028 in certain circumstances. The 2029 Debentures will be convertible based on an initial conversion rate of 34.6433 shares of common stock per $1,000 principal amount of the 2029 Debentures (equivalent to an initial conversion price of approximately $28.87 per share). The conversion rate and conversion price may be adjusted under certain circumstances.

At any time on or after September 15, 2016, the Company may redeem all or a part of the 2029 Debentures plus accrued and unpaid interest (including contingent interest and additional interest, if any) to, but not including, the redemption date. If WESCO International undergoes certain fundamental changes, as defined in the 2009 Indenture, prior to maturity, holders of the 2029 Debentures will have the right, at their option, to require WESCO International to repurchase for cash some or all of their 2029 Debentures at a repurchase price equal to 100% of the principal amount of the 2029 Debentures being repurchased, plus accrued and unpaid interest (including contingent interest and additional interest, if any) to, but not including, the repurchase date.

The following table sets forth the components of WESCO’s outstanding convertible debenture indebtedness:

	December 31, 2015							December 31, 2014
	Principal Balance		Discount			Net Carrying Amount		Principal Balance		Discount			Net Carrying Amount
(In thousands)
2029 Convertible Debentures	$	344,873	$	(163,316	)	$	181,557	$	344,895	$	(167,257	)	$	177,638

Covenant Compliance

WESCO was in compliance with all relevant covenants contained in its debt agreements as of December 31, 2015.

The following table sets forth the aggregate principal repayment requirements for all indebtedness for the next five years and thereafter, as of December 31, 2015:

(In thousands)
2016	$	44,339
2017	827
2018	525,413
2019	174,951
2020	75,040
Thereafter	844,872
Total payments on debt	1,665,442
Debt discount on convertible debentures and term loan facility	(164,342		)
Total debt	$	1,501,100

WESCO’s credit agreements contain various restrictive covenants that, among other things, impose limitations on (i) dividend payments or certain other restricted payments or investments; (ii) the incurrence of additional indebtedness and

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guarantees; (iii) creation of liens; (iv) mergers, consolidation or sales of substantially all of WESCO’s assets; (v) certain transactions among affiliates; (vi) payments by certain subsidiaries to WESCO; and (vii) capital expenditures. In addition, the Revolving Credit Facility and Term Loan Facility require WESCO to meet certain fixed charge coverage tests depending on availability or liquidity, respectively.

8. CAPITAL STOCK

Preferred Stock

There are 20 million shares of preferred stock authorized at a par value of $.01 per share. The Board of Directors has the authority, without further action by the stockholders, to issue all authorized preferred shares in one or more series and to fix the number of shares, designations, voting powers, preferences, optional and other special rights and the restrictions or qualifications thereof. The rights, preferences, privileges and powers of each series of preferred stock may differ with respect to dividend rates, liquidation values, voting rights, conversion rights, redemption provisions and other matters.

Common Stock

There are 210 million shares of common stock and 20 million shares of Class B common stock authorized at a par value of $.01 per share. The Class B common stock is identical to the common stock, except for voting and conversion rights. The holders of Class B common stock have no voting rights. With certain exceptions, Class B common stock may be converted, at the option of the holder, into the same number of shares of common stock.

The terms of the Revolving Credit Facility and the Term Loan Agreement provide certain restrictions on declaring or paying dividends. At December 31, 2015 and 2014, no dividends had been declared and, therefore, no retained earnings were reserved for dividend payments.

9. INCOME TAXES

The following table sets forth the components of income before income taxes by jurisdiction:

	Year Ended December 31,
	2015		2014		2013
			(In thousands)
United States	$	288,881	$	326,934	$	338,069
Foreign	15,029		57,219		41,782
Income before income taxes	$	303,910	$	384,153	$	379,851

The following table sets forth the components of the provision (benefit) for income taxes:

	Year Ended December 31,
	2015		2014			2013
			(In thousands)
Current taxes:
Federal(1)	$	45,812	$	69,495		$	48,740
State	4,565		7,161			4,669
Foreign	2,309		27,081			29,290
Total current taxes	52,686		103,737			82,699
Deferred taxes:
Federal	29,593		14,525			32,979
State	3,767		2,522			4,705
Foreign	9,491		(12,068		)	(17,050		)
Total deferred taxes	42,851		4,979			20,634
Provision for income taxes	$	95,537	$	108,716		$	103,333

⁽¹⁾  Tax benefits related to stock-based awards and other equity instruments recorded directly to additional paid in capital totaled $1.6 million, $5.0 million and $2.3 million in 2015, 2014 and 2013, respectively.

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The following table sets forth the reconciliation between the federal statutory income tax rate and the effective tax rate:

	Year Ended December 31,
	2015		2014		2013
Federal statutory rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal tax benefit	2.2		1.9		2.0
Nondeductible expenses	1.2		0.7		1.0
Foreign tax rate differences	(1.1	)	(1.4	)	(0.9	)
Tax effect of intercompany financing	(8.8	)	(7.8	)	(8.4	)
Federal tax credits	—		—		(1.4	)
Adjustment related to uncertain tax positions	2.7		(0.2	)	0.5
Other	0.2		0.1		(0.6	)
Effective tax rate	31.4	%	28.3	%	27.2	%

As of December 31, 2015, WESCO’s foreign subsidiaries had unremitted earnings of approximately $623.7 million, of which $524.6 million was attributable to the Company's Canadian operations. WESCO asserts that these earnings are permanently reinvested to fund growth in the foreign markets and, therefore, has not provided a deferred tax liability on these earnings. Additionally, WESCO’s current plans do not require that these earnings be repatriated to fund liquidity needs in the U.S. It is not practicable for WESCO to determine the deferred tax liability associated with repatriation of these earnings as such determination involves material uncertainties, however, if these earnings were repatriated and taxed at the U.S. statutory rate of 35%, the unrecognized deferred tax liability would be approximately $218.3 million.

The following table sets forth deferred tax assets and liabilities:

	As of December 31,
	2015				2014
			(In thousands)
	Assets		Liabilities		Assets		Liabilities
Accounts receivable	$	4,736	$	—	$	3,510	$	—
Inventory	—		5,410		—		2,517
Depreciation	—		11,671		—		13,074
Amortization of intangible assets	—		240,106		—		246,895
Convertible debt interest	—		161,700		—		139,315
Employee benefits	16,702		—		15,297		—
Stock-based compensation	27,531		—		27,068		—
Canada royalty and management fee	—		—		25,277		—
Foreign tax credits	11,494		—		11,239		—
Tax loss carryforwards	21,095		—		25,522		—
Other	6,768		7,715		11,647		6,231
Total deferred taxes	$	88,326	$	426,602	$	119,560	$	408,032

As of December 31, 2015 and 2014, WESCO had deferred tax assets of $12.6 million and $18.3 million, respectively, related to Canadian net operating loss carryforwards. The decrease is primarily due to the settlement of transfer pricing issues between the United States and Canada. The settlement reduced royalty expense that was deductible in Canada in prior years and as a result, reduced Canadian net operating loss carryforwards. The Canadian net operating loss carryforwards expire beginning in 2029 through 2035. Additionally, WESCO had deferred tax assets of $5.3 million and $3.8 million as of December 31, 2015 and 2014, respectively, related to non-Canadian foreign net operating loss carryforwards. These net operating loss carryforwards expire beginning in 2018, while some may be carried forward indefinitely. As of December 31, 2015 and 2014, WESCO had deferred tax assets of $3.2 million and $3.4 million, respectively, related to state net operating loss carryforwards. These carryforwards expire beginning in 2021 through 2029. The Company has determined, based upon an evaluation of all available positive and negative evidence, that it "more-likely-than-not" will utilize all of its net operating loss carryforwards before expiration and, accordingly, has not recorded a valuation allowance.

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As of December 31, 2015 and 2014, WESCO had deferred tax assets of $11.5 million and $11.2 million, respectively, related to U.S. foreign tax credit (“FTC”) carryforwards. These FTC carryforwards expire beginning in 2016 through 2024. The Company has determined that prudent and feasible tax planning strategies exist and it intends to implement these tax planning strategies to prevent these FTC carryforwards from expiring unused. Accordingly, a valuation allowance has not been recorded.

The Company is under examination by tax authorities in the United States and Canada and remains subject to examination until the applicable statutes of limitation expire. The statutes of limitation for the material jurisdictions in which the Company files income tax returns remain open as follows:

United States — Federal	2004 and forward
United States — Material States	2012 and forward
Canada	2004 and forward

The statutes of limitation with respect to the Company’s 2004 to 2007 U.S. federal income tax returns are open by waiver only in connection with the Mutual Agreement Procedure (“MAP”) concluded in the fourth quarter of 2015 between the Competent Authorities of the Internal Revenue Service (“IRS”) and Canada Revenue Agency (“CRA”) with respect to transfer pricing matters and matters pending before the Appeals Division of Canada Revenue Agency. The statute of limitation with respect to the Company’s 2008 U.S. federal income tax return is open by waiver only in connection with the Advance Pricing Agreement (“APA”) concluded in the fourth quarter of 2015 between the IRS and CRA. The APA resolves certain transfer pricing matters for the 2008 to 2018 tax years. The statutes of limitation with respect to the Company’s 2009 to 2011 U.S. Federal income tax returns are open by waiver only in connection with the IRS examination of those years and the APA.

The following table sets forth the reconciliation of gross unrecognized tax benefits:

	As of December 31,
	2015			2014			2013
	(In thousands)
Beginning balance January 1	$	20,033		$	25,548		$	21,075
Additions based on tax positions related to the current year	46			69			1,573
Additions for tax positions of prior years	402			191			4,566
Additions for acquired tax positions	—			308			1,428
Reductions for tax positions of prior years	(378		)	(5,608		)	—
Settlements	(9,638		)	(209		)	(2,226		)
Lapse in statute of limitations	(1,497		)	(40		)	(310		)
Foreign currency exchange rate changes	(3,532		)	(226		)	(558		)
Ending balance December 31	$	5,436		$	20,033		$	25,548

The total amount of unrecognized tax benefits were $5.4 million, $20.0 million, and $25.5 million as of December 31, 2015, 2014 and 2013, respectively. The amount of unrecognized tax benefits that would affect the effective tax rate if recognized in the consolidated financial statements was $6.2 million, $20.4 million, and $25.7 million, respectively. The amounts for 2014 and 2013 primarily related to transfer pricing adjustments made by Canada Revenue Agency, which were subject to MAP and APA proceedings under the U.S./Canada income tax treaty. These proceedings concluded in the fourth quarter of 2015.

It is reasonably possible that the amount of unrecognized tax benefits will decrease by approximately $2.8 million within the next twelve months due to the effective settlement of uncertain tax positions related to Internal Revenue Service audits or the expiration of statutes of limitation. Of this amount, approximately $1.6 million could impact the effective tax rate.

The Company classifies interest related to unrecognized tax benefits as interest income or expense. In 2015, interest income of $8.7 million was recognized as a result of the conclusion of the MAP and APA proceedings for the 2004 to 2015 tax years discussed above. Interest expense on unrecognized tax benefits was $1.0 million and $0.6 million for 2014 and 2013, respectively. As of December 31, 2015 and 2014, WESCO had an accrued liability of $2.1 million and $12.7 million, respectively, for interest expense related to unrecognized tax benefits. The Company classifies penalties related to unrecognized tax benefits as part of income tax expense. Penalties recorded in income tax expense were minimal in 2015, 2014, and 2013.

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10. EARNINGS PER SHARE

Basic earnings per share are computed by dividing net income by the weighted-average number of common shares outstanding during the periods. Diluted earnings per share are computed by dividing net income by the weighted-average common shares and common share equivalents outstanding during the periods. The dilutive effect of common share equivalents is considered in the diluted earnings per share computation using the treasury stock method, which includes consideration of dilutive equity awards and contingently convertible debt.

The following tables set forth the details of basic and diluted earnings per share:

	Year Ended December 31,
	2015		2014		2013
(In thousands, except per share data)
Net income attributable to WESCO International, Inc.	$	210,687	$	275,906	$	276,430
Weighted-average common shares outstanding used in computing basic earnings per share	43,433		44,440		44,148
Common shares issuable upon exercise of dilutive stock-based awards	626		997		1,121
Common shares issuable from contingently convertible debentures (see below for basis of calculation)	6,314		7,821		7,381
Weighted-average common shares outstanding and common share equivalents used in computing diluted earnings per share	50,373		53,258		52,650
Earnings per share attributable to WESCO International, Inc.
Basic	$	4.85	$	6.21	$	6.26
Diluted	$	4.18	$	5.18	$	5.25

The computation of diluted earnings per share attributable to WESCO International, Inc. excluded stock-based awards of approximately 1.2 million as of December 31, 2015 and 0.3 million as of December 31, 2014 and 2013. These amounts were excluded because their effect would have been antidilutive.

Because of WESCO’s obligation to settle the par value of the 2029 Debentures in cash upon conversion, WESCO is required to include shares underlying the 2029 Debentures in its diluted weighted-average shares outstanding when the average stock price per share for the period exceeds the conversion price of the debentures. Only the number of shares that would be issuable (under the treasury stock method of accounting for share dilution) are included, which is based upon the amount by which the average stock price exceeds the conversion price. The conversion price of the 2029 Debentures is $28.87. Share dilution as of December 31, 2015 is limited to a maximum of 11,947,533 shares for the 2029 Debentures. For the periods ended December 31, 2015, 2014, and 2013, the effect of the 2029 Debentures on diluted earnings per share attributable to WESCO International, Inc. was a decrease of $0.60, $0.89, and $0.86, respectively.

In December 2014, the Company's Board of Directors authorized the repurchase of up to $300 million of the Company's common stock through December 31, 2017. During the year ended December 31, 2015, the Company entered into accelerated stock repurchase agreements (the "ASR Transactions") with certain financial institutions to purchase shares of its common stock. In exchange for up-front cash payments totaling $150 million, the Company received 2,468,576 shares. The total number of shares ultimately delivered under the ASR Transactions was determined by the average of the volume-weighted-average prices of the Company's common stock for each exchange business day during the respective settlement valuation periods. WESCO funded the repurchases with borrowings under its prior revolving credit facility. For purposes of computing earnings per share, share repurchases have been reflected as a reduction to common shares outstanding on the respective share delivery dates.

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11. EMPLOYEE BENEFIT PLANS

Defined Contribution Plans

A majority of WESCO’s employees are covered by defined contribution retirement savings plans for their service rendered subsequent to WESCO’s formation. WESCO also offers a deferred compensation plan for select individuals. For U.S. participants, WESCO will make contributions in an amount equal to 50% of the participant’s total monthly contributions up to a maximum of 6% of eligible compensation. For Canadian participants, WESCO will make contributions in an amount ranging from 3% to 5% of the participant’s eligible compensation based on years of continuous service. In addition, for U.S. participants, employer contributions may be made at the discretion of the Board of Directors. A discretionary employer contribution charge of $9.7 million was incurred in 2014. For the years ended December 31, 2015, 2014 and 2013, WESCO incurred charges of $18.1 million, $28.3 million, and $22.1 million, respectively, for all such plans. Contributions are made in cash to employee retirement savings plan accounts. The deferred compensation plan is an unfunded plan. As of December 31, 2015 and 2014, the Company's obligation under the deferred compensation plan was $23.5 million and $22.5 million, respectively. Employees have the option to transfer balances allocated to their accounts in the defined contribution retirement savings plan and the deferred compensation plan into any of the available investment options.

Defined Benefit Plans

In connection with the December 14, 2012 acquisition of EECOL, the Company assumed a contributory defined benefit plan (the "Plan") covering substantially all Canadian employees of EECOL. The Plan provides retirement benefits based on earnings and credited service, and participants contribute 2% of their earnings to the Plan. Participants become 100% vested after two years of continuous service.

The Company also assumed EECOL's Supplemental Executive Retirement Plan (the "SERP"), which provides additional pension benefits to certain executives based on earnings, credited service and executive service. Participants in the SERP are vested after two years of continuous service and contribute 4% of their earnings to the SERP.

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The following tables present the changes in benefit obligations, plan assets and funded status for the pension plans and the components of net periodic pension cost.

	Year Ended December 31,
(In thousands)	2015			2014
Accumulated Benefit Obligation (ABO) at December 31	$	67,614		$	70,594
Change in Projected Benefit Obligation (PBO)
PBO at beginning of year	$	106,325		$	96,860
Service cost	4,537			3,610
Interest cost	4,012			4,600
Participant contributions	735			857
Actuarial (gain) loss, including assumption changes	(6,687		)	12,791
Benefits paid	(3,986		)	(4,125		)
Foreign currency exchange rate changes	(17,750		)	(8,268		)
PBO at end of year	$	87,186		$	106,325
Change in Plan Assets
Fair value of plan assets at beginning of year	$	90,342		$	87,606
Actual return on plan assets	4,781			11,042
Participant contributions	735			857
Employer contributions	2,366			2,310
Benefits paid	(3,986		)	(4,125		)
Foreign currency exchange rate changes	(15,053		)	(7,348		)
Fair value of plan assets at end of year	$	79,185		$	90,342
Funded Status	$	(8,001	)	$	(15,983	)
Amounts Recognized in the Consolidated Balance Sheets
Current liabilities	$	(355	)	$	(422	)
Noncurrent liabilities	(7,646		)	(15,561		)
Net amount recognized	$	(8,001	)	$	(15,983	)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss)
Net actuarial gain	$	(9,021	)	$	(2,828	)
Prior service cost	—			—
Total net amount recognized, before tax effect	$	(9,021	)	$	(2,828	)

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	Year Ended December 31,
(In thousands)	2015			2014			2013
Components of Net Periodic Pension Cost
Service cost	$	4,537		$	3,610		$	4,082
Interest cost	4,012			4,600			4,556
Expected return on plan assets	(5,260		)	(5,408		)	(4,103		)
Recognized actuarial gain	(15		)	(55		)	—
Net periodic pension cost	$	3,274		$	2,747		$	4,535
Other Changes in Plan Assets and PBO Recognized in Accumulated Other Comprehensive Income (Loss)
Net actuarial (gain) loss	$	(6,208	)	$	7,448		$	(9,917	)
Amortization of unrecognized net actuarial gain	15			55			—
Total amount recognized, before tax effect	(6,193		)	7,503			(9,917		)
Tax effect	1,661			(2,447		)	2,244
Total amount recognized, after tax effect	$	(4,532	)	$	5,056		$	(7,673	)
Total recognized in net periodic pension cost and accumulated other comprehensive income (loss)	$	(1,258	)	$	7,803		$	(3,138	)

The following weighted-average actuarial assumptions were used to determine benefit obligations at December 31:

	2015				2014
	Pension Plan		SERP		Pension Plan		SERP
Discount rate	4.2	%	4.2	%	4.1	%	4.1	%
Rate of compensation increase	4.0	%	4.0	%	4.0	%	4.0	%

The following weighted-average actuarial assumptions were used to determine net periodic pension costs at January 1:

	Year Ended December 31,
	2015				2014				2013
	Pension Plan		SERP		Pension Plan		SERP		Pension Plan		SERP
Discount rate	4.1	%	4.1	%	4.9	%	4.9	%	4.5	%	4.5	%
Expected long-term return on assets	6.4	%	n/a		6.4	%	n/a		6.3	%	n/a
Rate of compensation increase	4.0	%	4.0	%	4.0	%	4.0	%	4.0	%	4.0	%

The following benefit payments, which reflect expected future service, are expected to be paid:

Years ending December 31	(In thousands)
2016	$	2,202
2017	2,258
2018	2,294
2019	2,350
2020	2,432
2021-2025	15,223

The Company expects to contribute approximately $2.2 million to the plans in 2016.

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The Company's pension plan weighted asset allocations by asset category are as follows:

	December 31
	2015		2014
Asset Category
Canadian equities	23.0	%	23.6	%
U.S. equities	14.0	%	14.0	%
Non-North American equities	18.6	%	18.6	%
Fixed income investments	44.4	%	43.8	%
Total	100.0	%	100.0	%

The Plan's long-term overall objective is to maintain benefits at their current level without affecting the cost of maintaining the Plan, assuming that the demographic make-up of the group of members remains the same.

The primary investment objective, in support of the overall objective, is to earn the highest rate of return possible for the Plan, while keeping risk at acceptable levels. The long-term return objective of the Plan is to achieve a minimum annualized rate of return in excess of the actuarial requirements. This translates into a required return of 3.5% above inflation, net of investment management fees. The return objective is consistent with the overall investment risk level that the Plan assumes in order to meet the pension obligations of the Plan. To achieve this long term investment objective, the Plan has adopted an asset mix that has a combination of equity and fixed income investments. Risk is controlled by investing in a well-diversified portfolio of asset classes. A benchmark portfolio is established based on the expected returns for each asset class available. The investment of the Plan's assets in accordance with the benchmark portfolio should enable the Plan to not only attain, but also exceed the minimum overall objective.

The following table presents the target asset mix based on market value for each investment category within which the investment managers must invest the Plan's assets. The asset mix is reviewed and rebalanced to target on a quarterly basis.

Asset Category	Target %
Canadian equities	25	%
U.S. equities	15	%
Non-North American equities	20	%
Total equities	60	%
Fixed income investments	40	%

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity's own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below:

• Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date.

• Level 2 inputs include inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities.

• Level 3 inputs are unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The following section describes the valuation methodologies used by the trustees to measure the fair value of plan assets, including an indication of the level in the fair value hierarchy in which each type of asset is generally classified.

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Equity Securities. These securities consist of the Plan's share of segregated funds that invest in the stock of publicly traded companies and are valued at the net asset value of shares held at December 31. As such, these securities are generally classified as Level 2.

Fixed Income Investments. These investments consist of segregated funds that invest in Canadian, federal, provincial, municipal and corporate issued bonds and debentures and are valued through consultation and evaluation with brokers in the institutional market using other observable market data. As such, these investments are generally classified as Level 2. Also, these investments include money market funds that are valued using independent observable market data and primarily classified as Level 2.

The fair value methods described above may not be indicative of net realizable value or reflective of future fair values. Additionally, while the Company believes the valuation method used by the plan's trustee is appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The following tables set forth the fair value of plan assets classified under the appropriate level of the fair value hierarchy:

	December 31, 2015
(In thousands)	Level 1		Level 2		Level 3		Total
Canadian equities	$	—	$	18,189	$	—	$	18,189
U.S. equities	—		11,055		—		11,055
Non-North American equities	—		14,649		—		14,649
Fixed income investments	241		35,051		—		35,292
Total investments	$	241	$	78,944	$	—	$	79,185

	December 31, 2014
(In thousands)	Level 1		Level 2		Level 3		Total
Canadian equities	$	—	$	21,252	$	—	$	21,252
U.S. equities	—		12,573		—		12,573
Non-North American equities	—		16,724		—		16,724
Fixed income investments	335		39,458		—		39,793
Total investments	$	335	$	90,007	$	—	$	90,342

12. STOCK-BASED COMPENSATION

WESCO has sponsored four stock-based compensation plans. The 1999 Long-Term Incentive Plan, as amended and restated (“LTIP”), was designed to be the successor plan to all prior plans. Any shares remaining reserved for future issuance under the prior plans are available for issuance under the LTIP. The LTIP and predecessor plans are administered by the Compensation Committee of the Board of Directors.

On May 30, 2013, the Company renewed and restated the LTIP, increasing the maximum number of shares of common stock that may be issued under the plan by 1.6 million shares to 4.0 million. Under the LTIP, the total number of shares of common stock authorized to be issued under the LTIP will be reduced by 1 share of common stock for every 1 share that is subject to an option or stock appreciation right granted, and 1.83 shares of common stock for every 1 share that is subject to an award other than an option or stock appreciation right granted on or after May 30, 2013. As of December 31, 2015, 3.1 million shares of common stock were reserved under the LTIP for future equity award grants.

Except for the performance-based award, awards granted vest and become exercisable once criteria based on time is achieved. Performance-based awards vest based on market or performance conditions. All awards vest immediately in the event of a change in control. Each award terminates on the tenth anniversary of its grant date unless terminated sooner under certain conditions.

WESCO recognized $12.9 million, $14.8 million and $15.9 million of non-cash stock-based compensation expense, which is included in selling, general and administrative expenses, in 2015, 2014 and 2013, respectively. As of December 31, 2015, there was $15.2 million of total unrecognized compensation expense related to non-vested stock-based compensation

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arrangements for all awards previously made of which approximately $9.3 million is expected to be recognized in 2016, $5.3 million in 2017 and $0.7 million in 2018.

The total intrinsic value of awards exercised during the years ended December 31, 2015, 2014, and 2013 was $15.8 million, $25.2 million, and $23.4 million, respectively. The total amount of cash received from the exercise of options was $0.8 million and less than $0.1 million during the years ended December 31, 2014 and 2013, respectively. The gross deferred tax benefit associated with the exercise of stock-based awards totaled $5.7 million, $9.4 million, and $8.4 million in 2015, 2014, and 2013, respectively. WESCO uses the direct only method and tax law ordering approach to calculate the tax effects of stock-based compensation.

The following table sets forth a summary of stock-settled stock appreciation rights and related information for the years indicated:

	2015							2014				2013
	Awards		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life	Aggregate Intrinsic Value (In thousands)		Awards		Weighted-Average Exercise Price		Awards		Weighted-Average Exercise Price
Beginning of year	2,480,745		$	50.91				2,715,651		$	45.93	3,142,021		$	45.40
Granted	394,182		69.54					274,508		85.35		253,999		72.26
Exercised	(232,542	)	35.80					(485,469	)	41.58		(659,872	)	53.08
Cancelled	(75,364	)	73.59					(23,945	)	70.30		(20,497	)	61.26
End of year	2,567,021		54.47		4.6	$	11,731	2,480,745		50.91		2,715,651		45.93
Exercisable at end of year	2,034,263		$	49.36	3.5	$	11,731	1,980,767		$	44.06	2,192,800		$	40.94

WESCO granted the following stock-settled stock appreciation rights at the following weighted-average assumptions:

	2015	2014	2013
Stock-settled appreciation rights granted	394,182	274,508	253,999
Risk free interest rate	1.6%	1.5%	0.9%
Expected life (in years)	5	5	5
Expected volatility	32%	39%	50%

The weighted-average fair value per stock-settled appreciation right granted was $21.68, $30.64 and $31.34 for the years ended December 31, 2015, 2014 and 2013, respectively.

The following table sets forth a summary of time-based restricted stock units and related information for the year ended December 31, 2015:

	Awards		Weighted-Average Fair Value
Unvested at December 31, 2014	185,457		$	73.87
Granted	81,022		69.05
Vested	(76,387	)	66.89
Forfeited	(14,681	)	75.73
Unvested at December 31, 2015	175,411		$	74.52

The weighted-average fair value per restricted stock unit granted was $69.05, $85.32 and $72.15 for the years ended December 31, 2015, 2014 and 2013, respectively.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

The following table sets forth a summary of performance-based awards for the year ended December 31, 2015:

	Awards		Weighted-Average Fair Value
Unvested at December 31, 2014	130,004		$	80.21
Granted	59,661		67.81
Vested	(38,869	)	72.25
Forfeited	(36,276	)	80.14
Unvested at December 31, 2015	114,520		$	76.48

The fair value of the performance shares based on total stockholder return granted during the year ended December 31, 2015 were estimated using the following weighted-average assumptions:

Weighted-Average Assumptions
Grant date share price	$	69.54
WESCO expected volatility	26.9		%
Peer group median volatility	23.2		%
Risk-free interest rate	1.05		%
Correlation	95.8		%

The unvested performance-based awards in the table above include 57,260 shares in which vesting of the ultimate number of shares is dependent upon WESCO's total stockholder return in relation to the total stockholder return of a select group of peer companies over a three-year period. These awards are valued using a Monte Carlo simulation model. Compensation cost is recognized over the service period, regardless of whether the market conditions are achieved and the awards ultimately vest.

Vesting of the remaining 57,260 shares of performance-based awards in the table above is dependent upon the three-year average growth rate of WESCO's net income. The fair value of these awards is based upon the grant-date closing price of WESCO's common stock. Compensation cost is recognized over the performance period based upon WESCO's determination of whether it is probable that the performance targets will be achieved.

13. COMMITMENTS AND CONTINGENCIES

Future minimum rental payments required under operating leases, primarily for real property that have noncancelable lease terms in excess of one year as of December 31, 2015, are as follows:

Years ending December 31	(In thousands)
2016	$	56,574
2017	48,428
2018	40,020
2019	30,274
2020	21,726
Thereafter	53,234

Rental expense for the years ended December 31, 2015, 2014 and 2013 was $70.7 million, $63.2 million and $60.0 million, respectively.

From time to time, a number of lawsuits and claims have been or may be asserted against WESCO relating to the conduct of its business, including routine litigation relating to commercial and employment matters. The outcomes of litigation cannot be predicted with certainty, and some lawsuits may be determined adversely to WESCO. However, management does not believe that the ultimate outcome is likely to have a material adverse effect on WESCO’s financial condition or liquidity, although the resolution in any fiscal quarter of one or more of these matters may have a material adverse effect on WESCO’s results of operations for that period.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

As initially reported in its 2008 Annual Report on Form 10-K, WESCO was a defendant in a lawsuit in which a customer, ArcelorMittal Indiana Harbor, Inc. (“AIH”), alleged that the Company sold defective products to AIH in 2004 that were supplied to the Company by others. In February 2013, a jury returned a verdict in favor of AIH and awarded damages in the amount of approximately $36.1 million. As a result, the Company recorded a $36.1 million charge to selling, general and administrative expenses in 2012. After receiving letters from its insurers confirming insurance coverage of the matter, the Company recorded a receivable in the quarter ended March 31, 2013 in an amount equal to the previously recorded liability. There were various post-trial motions and appeals, including disputes regarding interest. A court awarded $3.9 million of prejudgment interest and post-judgment interest of 8% per annum. The Company recorded a liability and corresponding receivable for the interest. In April 2015, the Company, AIH and the parties’ respective insurance carriers agreed to settle the case. As part of the settlement, the Company's insurers paid $35.8 million to AIH in full and final satisfaction of the judgment, including any prejudgment and post-judgment interest, and AIH agreed to release all claims against the Company and its insurers. To account for the settlement, the Company reversed the previously recorded liability and corresponding receivable of $36.1 million, plus $10.2 million of interest that had accrued in connection with this matter. Accordingly, the settlement of this matter had no net effect on the Company's financial condition or results of operations.

WESCO is subject to the laws and regulations of states and other jurisdictions concerning the identification, reporting and escheatment (the transfer of property to the state) of unclaimed or abandoned funds, and is subject to audit and examination for compliance with these requirements. WESCO Distribution, Inc. is currently undergoing a compliance audit in the State of Delaware concerning the identification, reporting and escheatment of unclaimed or abandoned property. A third party auditor is conducting the audit on behalf of the State, and the Company has been working with an outside consultant during the audit process and in discussions with the auditors. The Company is defending the audit, the outcome of which cannot be predicted with certainty at this time. After the third party auditor completes its field work, it is expected to issue preliminary findings for review by the Company and the State, and thereafter the auditor is expected to issue a final report of examination. If the Company and State do not reach resolution after further discussion, the State issues a demand for payment, which the Company may either agree to pay or appeal, in full or in part. The Company has recorded a liability for unclaimed property based on the facts currently known to the Company.

In October 2014, WESCO was notified that the New York County District Attorney’s Office is conducting a criminal investigation involving minority and disadvantaged business contracting practices in the construction industry in New York City and that various contractors, minority and disadvantaged business firms, and their material suppliers, including the Company, are a part of this investigation. The Company has commenced an internal review of this matter and intends to cooperate with the government investigation. The Company cannot predict the outcome or impact of the matter at this time, but could be subject to fines, penalties or other adverse consequences. Based on the facts currently known to the Company, it cannot reasonably estimate a range of exposure to potential liability at this time.

14. SEGMENTS AND RELATED INFORMATION

WESCO provides distribution of product and services through its four operating segments, which have been aggregated as one reportable segment. WESCO has approximately 250,000 unique product stock keeping units and markets more than 1,000,000 products for customers. There were no material amounts of sales or transfers among geographic areas and no material amounts of export sales.

WESCO attributes revenues from external customers to individual countries on the basis of the point of sale. The following table sets forth information about WESCO by geographic area:

	Net Sales Year Ended December 31,												Long-Lived Assets December 31,
	2015				2014				2013				2015		2014		2013
(In thousands)
United States	$	5,665,962	75	%	$	5,618,240	71	%	$	5,275,275	70	%	$	157,570	$	127,670	$	137,904
Canada	1,533,705		21	%	1,899,173		24	%	1,882,313		25	%	63,088		80,080		93,642
Mexico	70,048		1	%	95,585		1	%	90,152		1	%	332		442		615
Subtotal North American Operations	7,269,715				7,612,998				7,247,740				220,990		208,192		232,161
Other International	248,772		3	%	276,628		4	%	265,602		4	%	5,369		8,213		11,115
Total	$	7,518,487			$	7,889,626			$	7,513,342			$	226,359	$	216,405	$	243,276

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

The following table sets forth sales information about WESCO’s sales by product category:

Year Ended December 31,	2015	2014	2013
(percentages based on total sales)
General and Industrial Supplies	40%	40%	40%
Wire, Cable and Conduit	15%	16%	16%
Data and Broadband Communications	15%	14%	14%
Power Distribution Equipment	11%	11%	11%
Lighting and Controls	10%	10%	10%
Control, Automation and Motors	9%	9%	9%

15. CONDENSED CONSOLIDATING FINANCIAL INFORMATION

WESCO International, Inc. has outstanding $344.9 million in aggregate principal amount of 2029 Debentures. The 2029 Debentures are fully and unconditionally guaranteed by WESCO Distribution, Inc., a 100% owned subsidiary of WESCO International, Inc., on a senior subordinated basis to all existing and future senior indebtedness of WESCO Distribution Inc..

WESCO Distribution, Inc. has outstanding $500 million in aggregate principal amount of 5.375% Senior Notes due 2021 (the "2021 Notes"). The 2021 Notes are unsecured senior obligations of WESCO Distribution, Inc. and are fully and unconditionally guaranteed on a senior unsecured basis by WESCO International, Inc.

Condensed consolidating financial information for WESCO International, Inc., WESCO Distribution, Inc. and the non-guarantor subsidiaries is presented in the following tables.

	Condensed Consolidating Balance Sheet
	December 31, 2015
	(In thousands)
	WESCO International, Inc.		WESCO Distribution, Inc.		Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Cash and cash equivalents	$	—	$	38,963	$	121,316		$	—		$	160,279
Trade accounts receivable, net	—		—		1,075,257			—			1,075,257
Inventories	—		376,641		433,426			—			810,067
Prepaid expenses and other current assets	15		47,290		173,596			(8,970		)	211,931
Total current assets	15		462,894		1,803,595			(8,970		)	2,257,534
Intercompany receivables, net	—		—		1,964,848			(1,964,848		)	—
Property, buildings and equipment, net	—		56,921		109,818			—			166,739
Intangible assets, net	—		4,072		399,577			—			403,649
Goodwill	—		255,251		1,426,411			—			1,681,662
Investments in affiliates	3,309,006		3,827,069		—			(7,136,075		)	—
Other assets	3,804		44,731		29,306			—			77,841
Total assets	$	3,312,825	$	4,650,938	$	5,733,555		$	(9,109,893	)	$	4,587,425
Accounts payable	$	—	$	414,524	$	300,995		$	—		$	715,519
Short-term debt	—		—		43,314			—			43,314
Other current liabilities	15,254		55,129		127,555			(8,970		)	188,968
Total current liabilities	15,254		469,653		471,864			(8,970		)	947,801
Intercompany payables, net	1,320,240		644,608		—			(1,964,848		)	—
Long-term debt	181,557		749,620		525,584			—			1,456,761
Other noncurrent liabilities	19,102		216,515		173,375			—			408,992
Total WESCO International stockholders’ equity	1,776,672		2,570,542		4,565,533			(7,136,075		)	1,776,672
Noncontrolling interest	—		—		(2,801		)	—			(2,801		)
Total liabilities and stockholders’ equity	$	3,312,825	$	4,650,938	$	5,733,555		$	(9,109,893	)	$	4,587,425

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

	Condensed Consolidating Balance Sheet
	December 31, 2014
	(In thousands)
	WESCO International, Inc.		WESCO Distribution, Inc.		Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Cash and cash equivalents	$	—	$	32,508	$	95,811		$	—		$	128,319
Trade accounts receivable, net	—		—		1,117,420			—			1,117,420
Inventories	—		373,938		445,564			—			819,502
Prepaid expenses and other current assets	12		144,282		147,268			(6,465		)	285,097
Total current assets	12		550,728		1,806,063			(6,465		)	2,350,338
Intercompany receivables, net	—		—		1,806,215			(1,806,215		)	—
Property, buildings and equipment, net	—		56,735		125,990			—			182,725
Intangible assets, net	—		4,733		425,107			—			429,840
Goodwill	—		246,771		1,488,669			—			1,735,440
Investments in affiliates	3,304,914		3,828,727		—			(7,133,641		)	—
Other assets	4,083		12,844		39,167			—			56,094
Total assets	$	3,309,009	$	4,700,538	$	5,691,211		$	(8,946,321	)	$	4,754,437
Accounts payable	$	—	$	445,680	$	319,455		$	—		$	765,135
Short-term debt	—		—		46,787			—			46,787
Other current liabilities	12,465		113,746		132,204			(6,465		)	251,950
Total current liabilities	12,465		559,426		498,446			(6,465		)	1,063,872
Intercompany payables, net	1,168,366		637,849		—			(1,806,215		)	—
Long-term debt	177,638		683,407		505,385			—			1,366,430
Other noncurrent liabilities	21,888		232,544		141,538			—			395,970
Total WESCO International stockholders’ equity	1,928,652		2,587,312		4,546,329			(7,133,641		)	1,928,652
Noncontrolling interest	—		—		(487		)	—			(487		)
Total liabilities and stockholders’ equity	$	3,309,009	$	4,700,538	$	5,691,211		$	(8,946,321	)	$	4,754,437

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

	Condensed Consolidating Statement of Income and Comprehensive Income (Loss)
	Year ended December 31, 2015
	(In thousands)
	WESCO International, Inc.			WESCO Distribution, Inc.			Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Net sales	$	—		$	3,456,883		$	4,177,383		$	(115,779	)	$	7,518,487
Cost of goods sold (excluding depreciation and	—			2,784,413			3,356,192			(115,779		)	6,024,826
amortization
Selling, general and administrative expenses	26			611,549			443,376			—			1,054,951
Depreciation and amortization	—			19,703			45,265			—			64,968
Results of affiliates’ operations	225,370			219,619			—			(444,989		)	—
Interest expense (income), net	24,910			63,261			(18,339		)	—			69,832
Provision for income taxes	(7,939		)	(6,929		)	110,405			—			95,537
Net income	208,373			204,505			240,484			(444,989		)	208,373
Less: Net loss attributable to noncontrolling interest	—			—			(2,314		)	—			(2,314		)
Net income attributable to WESCO International, Inc.	$	208,373		$	204,505		$	242,798		$	(444,989	)	$	210,687
Other comprehensive income (loss):
Foreign currency translation adjustment	(225,795		)	(225,795		)	(225,795		)	451,590			(225,795		)
Post retirement benefit plan adjustment	4,532			4,532			4,532			(9,064		)	4,532
Comprehensive (loss) income attributable to WESCO International, Inc.	$	(12,890	)	$	(16,758	)	$	21,535		$	(2,463	)	$	(10,576	)

	Condensed Consolidating Statement of Income and Comprehensive Income
	Year ended December 31, 2014
	(In thousands)
	WESCO International, Inc.			WESCO Distribution, Inc.			Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Net sales	$	—		$	3,557,839		$	4,446,139		$	(114,352	)	$	7,889,626
Cost of goods sold (excluding depreciation and	—			2,848,413			3,544,523			(114,352		)	6,278,584
amortization
Selling, general and administrative expenses	9			557,596			519,203			—			1,076,808
Depreciation and amortization	—			19,084			48,933			—			68,017
Results of affiliates’ operations	292,845			231,174			—			(524,019		)	—
Interest expense (income), net	24,472			74,653			(17,061		)	—			82,064
Provision for income taxes	(7,072		)	16,446			99,342			—			108,716
Net income	275,436			272,821			251,199			(524,019		)	275,437
Less: Net loss attributable to noncontrolling interest	—			—			(469		)	—			(469		)
Net income attributable to WESCO International, Inc.	$	275,436		$	272,821		$	251,668		$	(524,019	)	$	275,906
Other comprehensive loss:
Foreign currency translation adjustment	(120,293		)	(120,293		)	(120,293		)	240,586			(120,293		)
Post retirement benefit plan adjustment	(5,056		)	(5,056		)	(5,056		)	10,112			(5,056		)
Comprehensive income attributable to WESCO International, Inc.	$	150,087		$	147,472		$	126,319		$	(273,321	)	$	150,557

66

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

	Condensed Consolidating Statement of Income and Comprehensive Income
	Year ended December 31, 2013
	(In thousands)
	WESCO International, Inc.			WESCO Distribution, Inc.			Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Net sales	$	—		$	3,386,043		$	4,253,666		$	(126,367	)	$	7,513,342
Cost of goods sold (excluding depreciation and	—			2,700,692			3,393,567			(126,367		)	5,967,892
amortization
Selling, general and administrative expenses	29			485,575			511,206			—			996,810
Depreciation and amortization	—			18,331			49,311			—			67,642
Results of affiliates’ operations	294,137			207,630			—			(501,767		)	—
Interest expense (income), net	23,918			75,294			(13,605		)	—			85,607
Loss on debt extinguishment	—			13,225			—			—			13,225
Loss on sale of Argentina business	—			—			2,315			—			2,315
Provision for income taxes	(6,327		)	25,657			84,003			—			103,333
Net income	$	276,517		$	274,899		$	226,869		$	(501,767	)	$	276,518
Less: Net income attributable to noncontrolling interest	—			—			88			—			88
Net income attributable to WESCO International, Inc.	$	276,517		$	274,899		$	226,781		$	(501,767	)	$	276,430
Other comprehensive income (loss):
Foreign currency translation adjustment	(83,172		)	(83,172		)	(83,172		)	166,344			(83,172		)
Post retirement benefit plan adjustment	7,673			7,673			7,673			(15,346		)	7,673
Comprehensive income attributable to WESCO International, Inc.	$	201,018		$	199,400		$	151,282		$	(350,769	)	$	200,931

67

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

	Condensed Consolidating Statement of Cash Flows
	Year ended December 31, 2015
	(In thousands)
	WESCO International, Inc.			WESCO Distribution, Inc.			Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Net cash provided by operating activities	$	3,531		$	214,037		$	65,481		$	—		$	283,049
Investing activities:
Capital expenditures	—			(15,266		)	(6,392		)	—			(21,658		)
Acquisition payments, net of cash acquired	—			(151,595		)	—			—			(151,595		)
Proceeds from sale of assets	—			—			3,023			—			3,023
Dividends received from subsidiaries	—			114,101			—			(114,101		)	—
Advances to subsidiaries and other	—			(197,345		)	17,461			179,884			—
Net cash used in investing activities	—			(250,105		)	14,092			65,783			(170,230		)
Financing activities:
Proceeds from issuance of debt	150,705			1,224,596			452,655			(197,345		)	1,630,611
Repayments of debt	—			(1,175,056		)	(379,578		)	17,461			(1,537,173		)
Equity activities	(154,236		)	—			—			—			(154,236		)
Dividends paid by subsidiaries	—			—			(114,101		)	114,101			—
Other	—			(7,017		)	—			—			(7,017		)
Net cash (used in) provided by financing activities	(3,531		)	42,523			(41,024		)	(65,783		)	(67,815		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(13,044		)	—			(13,044		)
Net change in cash and cash equivalents	—			6,455			25,505			—			31,960
Cash and cash equivalents at the beginning of period	—			32,508			95,811			—			128,319
Cash and cash equivalents at the end of period	$	—		$	38,963		$	121,316		$	—		$	160,279

68

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

	Condensed Consolidating Statement of Cash Flows
	Year ended December 31, 2014
	(In thousands)
	WESCO International, Inc.			WESCO Distribution, Inc.			Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Net cash provided by operating activities	$	820		$	51,738		$	198,598		$	—		$	251,156
Investing activities:
Capital expenditures	—			(13,717		)	(6,831		)	—			(20,548		)
Acquisition payments, net of cash acquired	—			(42,226		)	(96,404		)	—			(138,630		)
Proceeds from sale of assets	—			—			14,991			—			14,991
Dividends received from subsidiaries	—			71,381			—			(71,381		)	—
Advances to subsidiaries and other	—			(53,779		)	17,461			36,318			—
Net cash used in investing activities	—			(38,341		)	(70,783		)	(35,063		)	(144,187		)
Financing activities:
Proceeds from issuance of debt	6,517			798,315			495,493			(60,437		)	1,239,888
Repayments of debt	(6,658		)	(807,776		)	(541,080		)	24,119			(1,331,395		)
Equity activities	(679		)	—			—			—			(679		)
Dividends paid by subsidiaries	—			—			(71,381		)	71,381			—
Other	—			(3,123		)	(181		)	—			(3,304		)
Net cash (used in) provided by financing activities	(820		)	(12,584		)	(117,149		)	35,063			(95,490		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(6,885		)	—			(6,885		)
Net change in cash and cash equivalents	—			813			3,781			—			4,594
Cash and cash equivalents at the beginning of period	—			31,695			92,030			—			123,725
Cash and cash equivalents at the end of period	$	—		$	32,508		$	95,811		$	—		$	128,319

69

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

	Condensed Consolidating Statement of Cash Flows
	Year ended December 31, 2013
	(In thousands)
	WESCO International, Inc.			WESCO Distribution, Inc.			Non-Guarantor Subsidiaries			Consolidating and Eliminating Entries			Consolidated
Net cash (used in) provided by operating activities	$	(10,716	)	$	209,501		$	116,356		$	—		$	315,141
Investing activities:
Capital expenditures	—			(16,728		)	(11,097		)	—			(27,825		)
Proceeds from sale of assets	—			—			10,807			—			10,807
Dividends received from subsidiaries	—			62,507			—			(62,507		)	—
Advances to subsidiaries and other	—			(59,991		)	16,256			42,530			(1,205		)
Net cash used in investing activities	—			(14,212		)	15,966			(19,977		)	(18,223		)
Financing activities:
Proceeds from issuance of debt	14,945			1,143,604			404,293			(59,991		)	1,502,851
Repayments of debt	—			(1,345,377		)	(412,561		)	17,461			(1,740,477		)
Equity activities	(4,229		)	—			—			—			(4,229		)
Dividends paid by subsidiaries	—			—			(62,507		)	62,507			—
Other	—			(14,096		)	(1,568		)	—			(15,664		)
Net cash provided by (used in) financing activities	10,716			(215,869		)	(72,343		)	19,977			(257,519		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(1,773		)	—			(1,773		)
Net change in cash and cash equivalents	—			(20,580		)	58,206			—			37,626
Cash and cash equivalents at the beginning of period	—			52,275			33,824			—			86,099
Cash and cash equivalents at the end of period	$	—		$	31,695		$	92,030		$	—		$	123,725

Revisions

The Condensed Consolidating Statements of Cash Flow for the years ended December 31, 2014 and 2013 were revised to appropriately present dividends paid by the non-guarantor subsidiaries and dividends received by WESCO Distribution, Inc. The revisions did not impact the consolidated amounts previously reported, nor did they impact the Company's obligations under the 2021 Notes or the 2029 Debentures.

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WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(CONTINUED)

16. SELECTED QUARTERLY FINANCIAL DATA (unaudited)

The following table sets forth selected quarterly financial data for the years ended December 31, 2015 and 2014:

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2015
Net Sales	$	1,816,330	$	1,916,718	$	1,923,899	$	1,861,540
Cost of goods sold (excluding depreciation and amortization)	1,448,639		1,535,084		1,543,113		1,497,990
Income from operations	87,185		90,253		106,348		89,956
Income before income taxes	66,291		71,640		85,931		80,048
Net income	46,793		50,639		62,384		48,557
Net income attributable to WESCO International, Inc.	47,031		51,741		63,503		48,412
Basic earnings per share attributable to WESCO International, Inc.(A)	1.06		1.18		1.47		1.15
Diluted earnings per share attributable to WESCO International, Inc.(B)	0.90		1.00		1.28		1.03
2014
Net Sales	$	1,810,825	$	2,005,165	$	2,078,150	$	1,995,486
Cost of goods sold (excluding depreciation and amortization)	1,436,032		1,593,437		1,655,787		1,593,328
Income from operations	92,959		115,833		133,248		124,177
Income before income taxes	72,271		95,496		112,450		103,936
Net income	51,855		68,787		80,818		73,977
Net income attributable to WESCO International, Inc.	51,905		68,802		80,816		74,383
Basic earnings per share attributable to WESCO International, Inc.(A)	1.17		1.55		1.82		1.67
Diluted earnings per share attributable to WESCO International, Inc.(B)	0.97		1.29		1.52		1.40

^(A)  Earnings per share (EPS) in each quarter is computed using the weighted-average number of shares outstanding during the quarter while EPS for the full year is computed by taking the average of the weighted-average number of shares outstanding each quarter. Thus, the sum of the four quarters’ EPS may not equal the full-year EPS.

^(B)  Diluted EPS in each quarter is computed using the weighted-average number of shares outstanding and common share equivalents during that quarter while Diluted EPS for the full year is computed by taking the average of the weighted-average number of shares outstanding and common share equivalents each quarter. Thus, the sum of the four quarters’ Diluted EPS may not equal the full-year Diluted EPS.

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Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None.

Item 9A. Controls and Procedures.

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of our disclosure controls and procedures as such term is defined under Rule 13a-15(e) promulgated under the Exchange Act. Based on this evaluation, our principal executive officer and our principal financial officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as such term is defined in Exchange Act Rule 13a-15(f). Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the updated framework in Internal Control — Integrated Framework (2013) (2013 Framework) issued by the Committee of Sponsoring Organizations of the Treadway Commission on May 14, 2013. Based on our evaluation under the 2013 Framework, our management concluded that our internal control over financial reporting was effective as of December 31, 2015.

The effectiveness of the Company’s internal control over financial reporting as of December 31, 2015 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report, which is included herein.

Changes in Internal Control Over Financial Reporting

During the last fiscal quarter of 2015, there were no changes in the Company’s internal control over financial reporting identified in connection with management’s evaluation of the effectiveness of the Company’s internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Item 9B. Other Information.

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance.

The information set forth under the captions “Board of Directors” and “Executive Officers” in our definitive Proxy Statement for our 2016 Annual Meeting of Stockholders is incorporated herein by reference.

Codes of Business Ethics and Conduct

We have adopted a Code of Business Ethics and Conduct (“Code of Conduct”) that applies to our Directors, officers and employees that is available on our website at www.wesco.com by selecting the “Investors” tab followed by the “Corporate Governance” heading. Any amendment or waiver of the Code of Conduct for our officers or Directors will be disclosed promptly at that location on our website.

We also have adopted a Senior Financial Executive Code of Principles for Senior Executives (“Senior Financial Executive Code”) that applies to our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing these functions. The Senior Financial Executive Code is also available at that same location on our website. We intend to timely disclose any amendment or waiver of the Senior Financial Executive Code on our website and will retain such information on our website as required by applicable SEC rules.

A copy of the Code of Conduct and/or Senior Financial Executive Code may also be obtained upon request by any stockholder, without charge, by writing to us at WESCO International, Inc., 225 West Station Square Drive, Suite 700, Pittsburgh, Pennsylvania 15219, Attention: Corporate Secretary.

The information required by Item 10 that relates to our Directors and executive officers is incorporated by reference from the information appearing under the captions “Corporate Governance,” “Board and Committee Meetings” and “Security Ownership” in our definitive Proxy Statement for our 2016 Annual Meeting of Stockholders that is to be filed with the SEC pursuant to the Exchange Act within 120 days of the end of our fiscal year on December 31, 2015.

Item 11. Executive Compensation.

The information set forth under the captions “Compensation Discussion and Analysis” and “Director Compensation” in our definitive Proxy Statement for our 2016 Annual Meeting of Stockholders is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information set forth under the caption “Security Ownership” in our definitive Proxy Statement for our 2016 Annual Meeting of Stockholders is incorporated herein by reference.

The following table provides information as of December 31, 2015 with respect to the shares of our common stock that may be issued under our existing equity compensation plans:

Plan Category	Number of securities to be issued upon exercise of outstanding options, warrants and rights	Weighted-average exercise price of outstanding options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans
Equity compensation plans approved by security holders	2,856,952	$	48.94	3,073,234
Equity compensation plans not approved by security holders	—	—		—
Total	2,856,952	$	48.94	3,073,234

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information set forth under the captions “Transactions with Related Persons” and “Corporate Governance” in our definitive Proxy Statement for our 2016 Annual Meeting of Stockholders is incorporated herein by reference.

Item 14. Principal Accountant Fees and Services.

The information set forth under the caption “Independent Registered Public Accounting Firm Fees and Services” in our definitive Proxy Statement for our 2016 Annual Meeting of Stockholders is incorporated herein by reference.

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PART IV

Item 15. Exhibits and Financial Statement Schedule.

The financial statements, financial statement schedule and exhibits listed below are filed as part of this annual report:

(a)(1) Financial Statements

The list of financial statements required by this item is set forth in Item 8, “Financial Statements and Supplementary Data,” and is incorporated herein by reference.

(2) Financial Statement Schedule

Schedule II — Valuation and Qualifying Accounts

(b) Exhibits

Exhibit No.	Description of Exhibit	Prior Filing or Sequential Page Number
2.1	Recapitalization Agreement, dated as of March 27, 1998, among Thor Acquisitions L.L.C., WESCO International, Inc. (formerly known as CDW Holding Corporation) and certain security holders of WESCO International, Inc.	Incorporated by reference to Exhibit 2.1 to WESCO’s Registration Statement on Form S-4 (No. 333-43225)
2.2	Share Purchase Agreement, dated as of October 15, 2012, between WDCC Enterprises Inc., the Shareholders party thereto, EECOL Holdings Ltd., Jarich Holdings Ltd., EESA Corp., EESA Holdings Ltd. and EECOL Electric Corp.	Incorporated by reference to Exhibit 2.1 to WESCO's Current Report on Form 8-K, dated October 17, 2012
3.1	Restated Certificate of Incorporation of WESCO International, Inc.	Incorporated by reference to Exhibit 3.1 to WESCO’s Registration Statement on Form S-4 (No. 333-70404)
3.2	Certificate of Amendment of Certificate of Incorporation to Restated Certificate of Incorporation of WESCO International, Inc.	Incorporated by reference to Exhibit 3.1 to WESCO’s Current Report on Form 8-K, dated May 29, 2014
3.3	Amended and Restated By-laws of WESCO International, Inc., effective as of May 29, 2014	Incorporated by reference to Exhibit 3.2 to WESCO’s Current Report on Form 8-K, dated May 29, 2014
4.1	Indenture, dated August 27, 2009, by and among WESCO International, Inc., WESCO Distribution, Inc. and The Bank of New York, as Trustee	Incorporated by reference to Exhibit 4.1 to WESCO’s Current Report on Form 8-K, dated August 27, 2009
4.2	Form of 6.0% Convertible Senior Debenture due 2029	Incorporated by reference to Exhibit 4.1 to WESCO’s Current Report on Form 8-K, dated August 27, 2009
4.3	Indenture, dated November 26, 2013, among WESCO Distribution, Inc. and U.S. Bank National Association, as trustee	Incorporated by reference to Exhibit 4.1 to WESCO’s Current Report on Form 8-K, dated November 27, 2013
4.4	Form of 5.375% Restricted Note due 2021	Incorporated by reference to Exhibit A-1 to Exhibit 4.1 to WESCO’s Current Report on Form 8-K, dated November 27, 2013
4.5	Form of 5.375% Unrestricted Note due 2021	Incorporated by reference to Exhibit A-2 to Exhibit 4.1 to WESCO’s Current Report on Form 8-K, dated November 27, 2013
10.1	1999 Deferred Compensation Plan for Non-Employee Directors, as amended and restated September 20, 2007	Incorporated by reference to Exhibit 10.5 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2011
10.2	Form of Stock Appreciation Rights Agreement for Employees	Incorporated by reference to Exhibit 10.7 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2011

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Exhibit No.	Description of Exhibit	Prior Filing or Sequential Page Number
10.3	Form of Restricted Stock Unit Agreement for Employees	Incorporated by reference to Exhibit 10.8 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2011
10.4	Form of Stock Appreciation Rights Agreement for Non-Employee Directors	Incorporated by reference to Exhibit 10.3 to WESCO’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2010
10.5	Form of Restricted Stock Unit Agreement for Non-Employee Directors	Incorporated by reference to Exhibit 10.4 to WESCO’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2010
10.6	Amended and Restated Registration and Participation Agreement, dated as of June 5, 1998, among WESCO International, Inc. and certain security holders of WESCO International, Inc. named therein	Incorporated by reference to Exhibit 10.19 to WESCO’s Registration Statement on Form S-4 (No. 333-43225)
10.7	Amended and Restated Employment Agreement, dated as of September 1, 2009, between WESCO International Inc. and John J. Engel	Incorporated by reference to Exhibit 10.2 to WESCO’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2009
10.8	Term Sheet, dated January 15, 2010, memorializing terms of employment of Diane Lazzaris by WESCO International, Inc.	Incorporated by reference to Exhibit 10.28 to WESCO’s Annual Report on Form 10-K for the year ended December 31, 2009
10.9	Term Sheet, dated June 18, 2010, memorializing terms of employment of Kimberly Windrow by WESCO International, Inc.	Incorporated by reference to Exhibit 10.1 to WESCO’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010
10.10	Notice of Performance Share Award under the WESCO International, Inc. 1999 Long-Term Incentive Plan	Incorporated by reference to Exhibit 10.1 to WESCO’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2012
10.11	Term Sheet, dated May 24, 2012, memorializing terms of employment of Kenneth Parks by WESCO International, Inc.	Incorporated by reference to Exhibit 10.1 to WESCO's Quarterly Report on Form 10-Q for the quarter ended June 30, 2012
10.12	Term Loan agreement, dated as of December 12, 2012 among WESCO Distribution, Inc., WDCC Enterprises Inc., WESCO International, Inc., Credit Suisse AG, Cayman Islands Branch, as Administrative Agent and Collateral Agent and the other Lenders and Agents party thereto	Incorporated by reference to Exhibit 10.1 to WESCO's Current Report on Form 8-K, dated December 17, 2012
10.13	1999 Long-Term Incentive Plan, as restated effective as of May 30, 2013	Incorporated by reference to Appendix A to the Proxy Statement filed on Schedule 14A on April 16, 2013
10.14	First Amendment to Term Loan Agreement, dated as of November 19, 2013 among WESCO Distribution, Inc., WDCC Enterprises Inc., WESCO International, Inc., Credit Suisse AG, Cayman Islands Branch, as Administrative Agent and Collateral Agent and the other Lenders and Agents party thereto	Incorporated by reference to Exhibit 10.31 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2013
10.15	Form of Non-Employee Director Restricted Stock Unit Agreement	Incorporated by reference to Exhibit 10.32 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2013
10.16	Form of Stock Appreciation Rights Agreement for Employees	Incorporated by reference to Exhibit 10.33 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2014

75

Exhibit No.	Description of Exhibit	Prior Filing or Sequential Page Number
10.17	Form of Restricted Stock Unit Agreement For Employees	Incorporated by reference to Exhibit 10.34 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2014
10.18	Notice of Performance Share Award Under the WESCO International, Inc. 1999 Long-Term Incentive Plan, as amended May 30, 2013	Incorporated by reference to Exhibit 10.35 to WESCO's Annual Report on Form 10-K for the year ended December 31, 2014
10.19	Second Amended and Restated Credit Agreement, dated as of September 24, 2015 among WESCO Distribution, Inc., the other U.S. Borrowers party thereto, WESCO Distribution Canada LP, the other Canadian Borrowers party thereto, WESCO International, Inc., the Lenders party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian Administrative Agent	Incorporated by reference to Exhibit 10.1 to WESCO’s Current Report on Form 8-K, dated September 24, 2015
10.20	Fourth Amended and Restated Receivables Purchase Agreement, dated as of September 24, 2015, by and among WESCO Receivables Corp., WESCO Distribution, Inc., the various Purchaser Groups from time to time party thereto and PNC Bank, National Association, as Administrator	Incorporated by reference to Exhibit 10.2 to WESCO’s Current Report on Form 8-K, dated September 24, 2015
10.21	Release Agreement, dated as of October 5, 2015, between WESCO International, Inc., and WESCO Distribution, Inc., and Stephen A. Van Oss	Incorporated by reference to Exhibit 10.1 to WESCO’s Quarterly Report on Form 10-Q, for the quarter ended September 30, 2015
10.22	Form of Non-Employee Director Restricted Stock Unit Agreement	Filed herewith
10.23	Form of Notice of Performance Share Award Under the WESCO International, Inc. 1999 Long-Term Incentive Plan, as amended May 30, 2013	Filed herewith
10.24	Form of Director and Officer Indemnification Agreement, entered among WESCO International, Inc. and certain of its executive officers and directors listed on a schedule attached thereto	Filed herewith
21.1	Subsidiaries of WESCO International, Inc.	Filed herewith
23.1	Consent of PricewaterhouseCoopers LLP	Filed herewith
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) promulgated under the Exchange Act	Filed herewith
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) promulgated under the Exchange Act	Filed herewith
32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed herewith
32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed herewith
101	Interactive Data File	Filed herewith

The registrant hereby agrees to furnish supplementally to the Commission, upon request, a copy of any omitted schedule to any of the agreements contained herein.

Copies of exhibits may be retrieved electronically at the Securities and Exchange Commission’s home page at www.sec.gov. Exhibits will also be furnished without charge by writing to Kenneth S. Parks, Senior Vice President and Chief Financial Officer, 225 West Station Square Drive, Suite 700, Pittsburgh, Pennsylvania 15219. Requests may also be directed to (412) 454-2200.

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SIGNATURES

Pursuant 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 its behalf by the undersigned, thereunto duly authorized.

WESCO INTERNATIONAL, INC.
By:	/s/ JOHN J. ENGEL
	Name:	John J. Engel
	Title:	Chairman, President and Chief Executive Officer
	Date:	February 22, 2016

WESCO INTERNATIONAL, INC.
By:	/s/ KENNETH S. PARKS
	Name:	Kenneth S. Parks
	Title:	Senior Vice President and Chief Financial Officer
	Date:	February 22, 2016

77

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Title	Date
/s/ JOHN J. ENGEL	Chairman, President and Chief Executive Officer	February 22, 2016
John J. Engel	(Principal Executive Officer)
/s/ KENNETH S. PARKS	Senior Vice President and Chief Financial Officer	February 22, 2016
Kenneth S. Parks	(Principal Financial and Accounting Officer)
/s/ SANDRA BEACH LIN	Director	February 22, 2016
Sandra Beach Lin
/s/ BOBBY J. GRIFFIN	Director	February 22, 2016
Bobby J. Griffin
/s/ JOHN K. MORGAN	Director	February 22, 2016
John K. Morgan
/s/ JAMES J. O’BRIEN	Director	February 22, 2016
James J. O’Brien
/s/ STEVEN A. RAYMUND	Director	February 22, 2016
Steven A. Raymund
/s/ JAMES L. SINGLETON	Director	February 22, 2016
James L. Singleton
/s/ ROBERT J. TARR, JR.	Director	February 22, 2016
Robert J. Tarr, Jr.
/s/ LYNN M. UTTER	Director	February 22, 2016
Lynn M. Utter

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Schedule II—Valuation and Qualifying Accounts

	Balance at Beginning		Charged to		Charged to Other					Balance at
	of Period		Expense		Accounts(1)		Deductions(2)			End of Period
Allowance for doubtful accounts	(In thousands)
Year ended December 31, 2015	$	21,084	$	6,099	$	1,305	$	(5,901	)	$	22,587
Year ended December 31, 2014	19,309		5,937		194		(4,356		)	21,084
Year ended December 31, 2013	17,242		2,878		2,623		(3,434		)	19,309

_________________________

⁽¹⁾  Represents allowance for doubtful accounts in connection with certain acquisitions and divestitures.

⁽²⁾  Includes a reduction in the allowance for doubtful accounts due to write-off of accounts receivable.

79