UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

Commission File Number: 1-10883

Delaware (State or other jurisdiction of incorporation or organization)   1000 Sagamore Parkway South Lafayette, Indiana (Address of Principal Executive Offices)

52-1375208 (IRS Employer Identification Number)   47905 (Zip Code)

Registrant’s telephone number, including area code: (765) 771-5300

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

Securities registered pursuant to Section 12(g) of the Act: None

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes¨Nox

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YesxNo¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  x    No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.¨

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

(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¨Nox

The aggregate market value of voting stock held by non-affiliates of the registrant as of June 30, 20142015 was $982,842,037 $819,745,393based upon the closing price of the Company's common stock as quoted on the New York Stock Exchange composite tape on such date.

The number of shares outstanding of the registrant's common stock as of February 19, 201518, 2016 was 68,669,611.64,935,898.

Part III of this Form 10-K incorporates by reference certain portions of the registrant’s Proxy Statement for its Annual Meeting of Stockholders to be filed within 120 days after December 31, 2014.

2015.

TABLE OF CONTENTS

WABASH NATIONAL CORPORATION

FORM 10-K FOR THE FISCAL

YEAR ENDED DECEMBER 31, 20142015

FORWARD LOOKING STATEMENTS

This Annual Report of Wabash National Corporation (the “Company”, “Wabash”(together with its subsidiaries, “Wabash,” “Company,” “us,” “we,” or “we”“our”) contains “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”). Forward-looking statements may include the words “may,” “will,” “estimate,” “intend,” “continue,” “believe,” “expect,” “plan” or “anticipate” and other similar words. Our “forward-looking statements” include, but are not limited to, statements regarding:

Although we believe that the expectations expressed in our forward-looking statements are reasonable, actual results could differ materially from those projected or assumed in our forward-looking statements. Our future financial condition and results of operations, as well as any forward-looking statements, are subject to change and are subject to inherent risks and uncertainties, such as those disclosed in this Annual Report. Each forward-looking statement contained in this Annual Report reflects our management’s view only as of the date on which that forward-looking statement was made. We are not obligated to update forward-looking statements or publicly release the result of any revisions to them to reflect events or circumstances after the date of this Annual Report or to reflect the occurrence of unanticipated events, except as required by law.

Currently known risks and uncertainties that could cause actual results to differ materially from our expectations are described throughout this Annual Report, including in “Item 1A.Risk Factors.” We urge you to carefully review that section for a more complete discussion of the risks of an investment in our securities.

PART I

PART I

ITEM 1—BUSINESS

Overview

Wabash National Corporation (“Wabash,(together with its subsidiaries, “Wabash,” “Company,” “us,” “we,” or “our”) was founded in 1985 as a start-up company in Lafayette, Indiana. We are now one ofa diversified industrial manufacturer and North America’s leaders in designing, manufacturingleading producer of semi-trailers and marketing standardliquid transportation systems. We design, manufacture and customized truckmarket a diverse range of products, including dry freight and refrigerated trailers, platform trailers, bulk tank trailers, dry and related transportationrefrigerated truck bodies, truck-mounted tanks, intermodal equipment, aircraft refueling equipment, structural composite panels and products, trailer aerodynamic solutions and specialty food grade and pharmaceutical equipment. We believe our position as a leader in our industry has beenkey industries is the result of longstanding relationships with our core customers, our demonstrated ability to attract new customers, our broad and innovative product lines, our technological leadership and our extensive distribution and service network. Our management team is focused on continuing to optimize our manufacturing and retail operations to match the current demand environment, implementing cost savings initiatives and lean manufacturing techniques, strengthening our capital structure, developing innovative products that enable our customers to succeed, improving earnings and continuing diversification of the business into higher margin opportunities that leverage our intellectual and process capabilities.

Wabash was incorporated in Delaware in 1991 and is the successor by merger to a Maryland corporation organized in 1985. Our internet website is www.wabashnational.com. We make our electronic filings with the Securities Exchange Commission (the “SEC”), including our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to these reports available on our website free of charge as soon as practicable after we file or furnish them with the SEC. Information on the website is not part of this Form 10-K.Annual Report.

Operating Segments

We manage our business in three segments: Commercial Trailer Products, Diversified Products and Retail. In the second quarter of 2012, we completed the acquisition of Walker Group Holdings (“Walker”), a manufacturer of liquid-transportation systems and engineered products significantly enhancing our Diversified Products segment. In the first quarter of 2013, we completed the acquisition of certain assets of the tank and trailer business of Beall Corporation (“Beall”), a manufacturer of aluminum tank trailers and related equipment based in Portland, Oregon, further adding to our Diversified Products segment. In the fourth quarter of 2014, our wood flooring production business that manufactures laminated hard wood oak products for our van trailer business, which had been reported as part of the Diversified Products segment through the third quarter of 2014, was reclassified to our Commercial Trailer Products segment due to a change in how that business is managed internally as we intend to drive improvements in the synergies between the two businesses. Financial performances for each of our reporting segments have been restated to reflect this realignment. Certain corporate relatedRetail.Certain corporate-related administrative costs, interest and income taxes are not allocated and soto these three segments, but are reported in our corporateCorporate and eliminationsEliminations segment. Financial results by operating segment, including information about revenues from customers, measures of profit and loss and financial information regarding geographic areas and export sales are discussed in Note 13,12, Segments and Related Information, of the accompanying consolidated financial statements. By operating segment, net sales, prior to the elimination of intersegment sales, were as follows (dollars in millions)thousands):

Commercial Trailer Products

Commercial Trailer Products segment sales as a percentage of our consolidated net sales and gross margin measured prior to intersegment eliminations were:

The Commercial Trailer Products segment manufactures standard and customized truckvan and platform trailers. We seek to identify and produce proprietary custom products that offer exceptional value to customers with the potential to generate higher profit margin than standardized products. We believe that we have the engineering and manufacturing capability to produce these products efficiently. We introduced our proprietary composite product, DuraPlate^®â,in 1996 and have experienced widespread truck trailer industry acceptance. Since 2002, sales of our DuraPlate^®â trailers have represented approximately 94% of our total new dry van trailer sales. We are also a competitive producer of standardized sheet and post and refrigerated trailer products as well as other specialty products, including converter dollies. Through our Transcraft subsidiary we also manufacture steel and aluminum flatbed and dropdeck trailers. Through our Commercial Trailer Products segment, we also operate a wood flooring production facility that manufactures laminated hard wood oak products for our van trailer products.

We market ourCommercial Trailer Products’ transportation equipment is marketed under the Wabash^®â, DuraPlate^®â, DuraPlateHD^®â, DuraPlate^®âXD-35^®, FreightPro^®, ArcticLite^®, RoadRailer^®, Transcraft^®, Eagle^®, Eagle II^®, D-Eagle^®and Benson^® trademarks directly to customers, through independent dealers and through our Company-owned retail branch network. Historically, we have focused on our longstanding core customers representing many of the largest companies in the trucking industry, but have expanded this focus over the past several years to include numerous additional key accounts. Our relationships with our core customers have been central to our growth since inception. We have also actively pursued the diversification of our customer base through our network of independent dealers. For our van business we utilize a total of 2625 independent dealers with approximately 6263 locations throughout North America to market and distribute our trailers. We distribute our flatbed and dropdeck trailers through a network of 7773 independent dealers with approximately 113123 locations throughout North America. In addition, we maintain a used fleet sales center to focus on selling both large and small fleet trade packages to the wholesale market.

Diversified Products

Diversified Products segment sales as a percentage of our consolidated net sales and gross margin measured prior to intersegment eliminations were:

The Diversified Products segment focuses on our commitment to expand our customer base, diversify our product offerings, end markets and revenues, and extend our market leadership by leveraging our intellectual property and technology, including our proprietary DuraPlate^® panel technology, drawing on our core manufacturing expertise and making available products that are complementary to the truck and tank trailers and transportation equipment we offer. This segment includes a wide array of products and customer-specific solutions. Leveraging our intellectual property and technology and core manufacturing expertise into new applications and market sectors enables us to deliver greater value to our customers and shareholders.

The Diversified Products segment is comprised of four strategic business units: Tank Trailer, Aviation & Truck Equipment, Process Systems and Composites. The Tank Trailer business sells products through several brands including Walker Transport, Brenner^® Tank, Bulk International and Beall^® Trailers. These brands represent leading positions in liquid transportation systems and include a full line of stainless steel and aluminum tank trailers for the North American chemical, dairy, food and beverage, and petroleum and energy services markets. Offerings related to our Process Systems business include brands such as Walker^®Engineered Products and Extract Technology^® and represent what we estimate to be leading positions in isolators, stationary silos and downflow booths around the world for the chemical, dairy, food and beverage, pharmaceutical and nuclear markets. The Aviation & Truck Equipment business is a leading manufacturer of truck-mounted tanks used in the aviation, refined fuel, heating oil, propane and liquid waste industries with products offered under the Garsite and Progress Tank brands. Our Composites business includes offerings under our DuraPlate^® composite panel technology, which contains unique properties of strength and durability that can be utilized in numerous applications in addition to truck trailers.trailers and truck bodies. The Diversified Products segment has leveraged our DuraPlate^®panel technology to develop numerous proprietary products, including a foldable portable storage container, the DuraPlate^® AeroSkirt^®and AeroSkirt CX^TM, an aerodynamic solutionssolution for over-the-road trailers that provideprovides approximately 6% improvement in fuel efficiency,economy, as well as othera line of foldable portable storage containers. Leveraging its experience with DuraPlate® and trailer aerodynamics, the Composites business has developed a full line of aerodynamic solutions designed to improve overall trailer aerodynamics and fuel economy, most notably the AeroSkirt CX™, Ventix DRS^TM and AeroFin^TM. In addition, we utilize our DuraPlate^® technology in the production of truck bodies, overhead doors and other industrial applications. These DuraPlate^® composite products are sold to original equipment manufacturers and aftermarket customers.

In May 2012, we added to our Diversified Products segment by completing the Walker acquisition. Walker is a leading manufacturer of liquid-transportation systems and engineered products based in New Lisbon, Wisconsin. The acquisition of Walker provided Wabash with diversification in products, end-markets, customers and geographies, while maintaining a focus on core manufacturing capabilities that the two companies share. Walker’s transportation products include brands such as Walker Transport, Garsite, Walker Defense Group, Progress Tank, Brenner^® Tank, TST^® and Bulk International. These brands represent leading positions in liquid transportation systems, including stainless steel liquid transportation systems and stainless steel liquid-tank trailers for the North American chemical, dairy, food and beverage, petroleum, aviation, energy services and waste hauling markets. Walker’s engineered products include brands such as Walker^® Engineered Products, Walker^®Barrier Systems and Extract Technology^®. These brands represent what we estimate to be leading positions in isolators, stationary silos and downflow booths around the world for the chemical, dairy, food and beverage, pharmaceutical and nuclear markets. In addition, in February 2013, we further added to our Diversified Products segment by completing, out of bankruptcy liquidation, the acquisition of certain assets of the tank and trailer business of Beall Corporation, a manufacturer of aluminum tank trailers and related equipment based in Portland, Oregon.

Through these brands and product offerings, our Diversified Products segment now serves a variety of end markets, a number of which we believe are less cyclical than otherthe markets historically served by Wabash. We believe Walker’s diversified products base, end-marketsour Commercial Trailer Products and customers also present opportunities to grow sales of existing Wabash products.Retail segments. We expect to continue to focus on diversifying our Diversified Products segment to enhance our business model, strengthen our revenues and become a stronger company that can deliver greater value to our shareholders.

Retail

Retail segment sales as a percentage of our consolidated net sales and gross margin measured prior to intersegment eliminations were:

The Retail segment includes our 15 Company-owned retail branch locations, which are strategically located near large metropolitan areas to provide additional opportunities to distribute our products, diversify our factory direct sales and also offer nationwide services and support capabilities for our customers. In May 2014, we entered into a definitive agreement with TEC Equipment, Inc. to transition three of our retail locations in California and Oregon to independent dealer facilities. Additionally, this segment includes 9 on-site service locations, wherebywhere we provide dedicated service on a customer’s site in conjunction with long-term service and maintenance contracts. Our retail branch network’s sale of new and used trailers, aftermarket parts and service generally provides enhanced margin opportunities to our retail customers.opportunities.

Strategy

We are committed to a corporate strategy that seeks to maximize shareholder value by executing on the core elements of our strategic plan:

Industry and Competition

Trucking in the U.S., according to the American Trucking Association (ATA), was estimated to be a $682$700 billion industry in 2013,2014, representing approximately 81%80% of the total transportation industry revenue. Furthermore, ATA estimates that approximately 69% of all freight tonnage in 20132014 was carried by trucks. Trailer demand is a direct function of the amount of freight to be transported. As the economy improves,Furthermore, ATA estimates that the percentage of freight tonnage carried by trucks will grow to 71%25% by 2025.2026. To meet this expected increased incontinued high demand for freight, demand, truck carriers will need to expandreplace and replaceexpand their fleets, which typically results in increased trailer orders.

Transportation in the U.S., including trucking, is a cyclical industry that has experienced three cycles over the last 20 years. In each of the last three cycles the decline in freight tonnage preceded the general U.S. economic downturn by approximately two and one-half years and the recovery has generally preceded that of the economy as a whole. The trailer industry generally follows the transportation industry, experiencing cycles in the early and late 90’s lasting approximately 58 and 67 months, respectively. Truck freight tonnage, according to ATA statistics, started declining year-over-year in 2006 and remained at depressed levels through 2009. The most recent cycle concluded in 2009, lasting a total of 89 months. After three consecutive years with total trailer demand well below normal replacement demand levels estimated to be between 200,000 trailers andapproximately 220,000 trailers, the four year period ending December 20142015 represent consecutive years of significant improvement in which the total trailer market increased year-over-year approximately 67%, 13%by 14%, 1%, 15% and 15% for 2011,14% in 2012, 2013, 2014 and 2014,2015, respectively, with total shipments of approximately 207,000; 234,000; 237,000232,000; 234,000, 269,000 and 271,000,307,000, respectively. In our view, we expect to see continued strong demand for new trailer equipment as the economic and industry specific indicators we track, including but not limited to ATA’s truck tonnage index, total industrial production, employment growth, housing and auto sectors, as well as the overall gross domestic product, appear to be trending in a positive direction.

Wabash, and its three largest competitors, Great Dane, Utility and Hyundai Translead, are generally viewed as the top trailer manufacturers in the U.S. and have accounted for greater than 50%approximately 69% of U.S. new trailer market share in recent years, including approximately 68% in 2014.2015. Our market share of U.S. total trailer shipments in 20142015 was approximately 21%20%. Trailer manufacturers compete primarily through the quality of their products, customer relationships, service availability and price. Over the past several years, we have seen a number of our competitors follow our leadership in the development and use of composite sidewalls that compete directly with our DuraPlate^®â products. Our product development is focused on maintaining our leading position with respect to these products and on development of new products and markets, leveraging our proprietary DuraPlate^® product, as well as our expertise in the engineering and design of customized products.

The table below sets forth new trailer production for Wabash and, as provided by Trailer Body Builders Magazine, our largest competitors and the trailer industry as a whole within North America. The data represents all segments of the market, except containers and chassis. For the years included below, we have participated primarily in the van and platform trailer segments and added the tank trailer segment beginning in 2012 with the acquisitions of Walker Group Holdings (“Walker”) in May 2012 and certain assets of Beall Corporation (“Beall’) in February 2013. Van trailer demand, the largest segment within the trailer industry, has continued to show sequential improvements over each of the last five years from a low of approximately 52,000 trailers in 2009 and recovering to an estimated 196,000227,000 van trailers in 2014.2015. Our market share for van trailers in 20142015 was approximately 25%24%, an increasea decrease of approximately 2%less than 1% from 2013.2014.

Our diversified product segment, in most cases, participates in markets different than our traditional van and platform trailer product offerings. The end markets that our diversified products serve are broader and more diverse than the trailer industry, including environmental, pharmaceutical, biotech, oil and gas, moving and storage and specialty vehicle. In addition, our diversification efforts pertain to new and emerging markets and many of the products are driven by regulatory requirements or, in most cases, customer-specific needs. However, some of our diversification efforts are considered to be in the early growth stages and future success is largely dependent on continued customer adoption of our product solutions and general expansion of our customer base and distribution channels.

Competitive Strengths

We believe our core competitive strengths include:

We have been manufacturing DuraPlate^®â trailers for over 1920 years and through December 20142015 have sold over 550,000approximately 600,000 DuraPlate^® trailers. ThisWe believe that this proven experience, combined with ownership and knowledge of the DuraPlate^®â panel technology, helpswill help ensure continued industry leadership in the future. We continue to introduce new innovations in our DuraPlate^® family,line of products, including DuraPlateHD^®and DuraPlate XD-35^®, along with new innovations in other product lines, including our ArcticLite^® refrigerated trailers and the FreightPro^® sheet and post trailer.Lean Duplex tank trailers.

Regulation

Truck trailer length, height, width, maximum weight capacity and other specifications are regulated by individual states. The federal government also regulates certain safety and environmental sustainability features incorporated in the design and use of truck and tank trailers. These regulations include, but are not limited to, requirements on anti-lock braking systems (ABS) and rear-impact guard standards, the use of aerodynamic devices and fuel saving technologies, as well as operator restrictions as to hours of service and minimum driver safety standards (see “Industry Trends”). In addition, most tank trailers we manufacture have specific federal regulations and restrictions that dictate tank design, material type and thickness. Manufacturing operations are subject to environmental laws enforced by federal, state and local agencies (see "Environmental Matters").

Products

Since our inception, we have expanded our product offerings from a single truck trailer dry van product to a broad range of transportation equipment and diversified industrial products.

Our Commercial Trailer Products segment specializes in the development of innovative proprietary products for our key markets. Commercial Trailer Products segment sales represented approximately 66%72%, 63%66% and 69%63% of our consolidated net sales as measured before elimination of intersegment sales in 2015, 2014 2013 and 2012,2013, respectively. Our current Commercial Trailer Products primarily include the following:

Our Diversified Products segment focuses on our commitment to expand our customer base, diversify our product offerings, end markets and revenues, and extend our market leadership by leveraging our intellectual property and technology, including our proprietary DuraPlate^® panel technology, drawing on our core manufacturing expertise and making available products that are complementary to the truck and tank trailers and transportation equipment we offer. Our Diversified Products segment has expanded in recent years through strategic acquisitions. Diversified Products segment sales represented approximately 24%20%, 27%24% and 21%27% of our consolidated net sales as measured before elimination of intersegment sales in 2015, 2014 2013 and 2012,2013, respectively. Our current Diversified Products segment primarily includeincludes the following:

¹EPA Smartway^® is a registered trademark of U.S. Environmental Protection Agency (EPA)

Our Retail segment offers products in three general categories, including new trailers, used trailers and parts and service. Retailservice.Retail segment sales represented approximately 10%8% of our consolidated net sales as measured before elimination of intersegment sales in 2015 and approximately 10% in each of the last three years. Theprior two years.The following is a description of each product category:

¹EPA Smartway^® is a registered trademark of U.S. Environmental Protection Agency (EPA)

Customers

Customers

Our customer base has historically included many of the nation’s largest truckload (TL) common carriers, leasing companies, private fleet carriers, less-than-truckload (LTL) common carriers and package carriers. Our customer base includes approximately two-thirds of the top fifty and more than one-half of the top one hundred for-hire fleet operators in North America, according to Transport Topics. We continue to make improvements in expandingexpand our customer base and diversifyingdiversify into the broader trailer market through leveraging our independent dealer and company-owned retail networks, as well as through strategic acquisitions. Furthermore, we continue to diversify our products organically by expanding the use of DuraPlate^® composite panel technology through products such as portable storage containers, DuraPlate^® AeroSkirts^®, truck bodies, and overhead doors and portable storage containers as well as strategically through our acquisitions. All of these efforts have been accomplished while maintaining our relationships with our core customers. Our five largest customers together accounted for approximately 20%25%, 17%20% and 23%17% of our aggregate net sales in 2015, 2014 2013 and 2012,2013, respectively. No individual customer accounted for more than 10% or more of our aggregate net sales during the past three years. International sales, primarily to Canadian customers, accounted for less than 10% of net sales for each of the last three years.

We have established relationships as a supplier to many large customers in the transportation industry, including the following:

Through our Diversified Products segment we also sell our products to several other customers including, but not limited to: Atlantic Aviation; GlaxoSmithKline Services Unlimited; Poly-Coat Systems, Inc.; Semo Tank/Baker Equipment Company;Dairy Farmers of America; Southwest Airlines Company; Quality Carriers.Nestlé; Utilimaster Corporation; Matlack Leasing LLC; International Equipment Logistics, Inc.; and Wabash Manufacturing, Inc. (an unaffiliated company).; and Whiting Door Manufacturing Corp.

Marketing and Distribution

We market and distribute our products through the following channels:

Factory direct accounts are generally large fleets, with over 7,500 trailers, that are high volume purchasers. Historically, we have focused on the factory direct market in which customers are highly knowledgeable of the life-cycle costs of trailer equipment and, therefore, are best equipped to appreciate the design and value-added features of our products. We have also actively pursued, through our Company-owned and independent dealer network, the diversification of our customer base focusing on carriers that operate fleets of between 250 to 7,500 trailers, which we estimate account for approximately two million trailers in total.

Our Company-owned distribution network generates retail sales of trailers to smaller fleets and independent operators located in geographic regions where our branches are located. This branch network enables us to provide maintenance and other services to customers. The branch network and our used trailer centers provide an outlet to facilitate the resale of used trailers taken in trade upon the sale of new trailers, which is a common practice with fleet customers.

We also sell our van trailers through a network of 2625 independent dealers with approximately 6263 locations throughout North America. Our platform trailers are sold through 7773 independent dealers with approximately 113123 locations throughout North America. Our tank trailers are distributed through a network of 7165 independent dealers andwith 66 locations throughout North America. The dealers primarily serve mid-market and smaller sized carriers and private fleets in the geographic region where the dealer is located and occasionally may sell to large fleets. The dealers may also perform service work for our customers.

Raw Materials

We utilize a variety of raw materials and components including, specialty steel coil, stainless steel, plastic, aluminum, lumber, tires, landing gear, axles and suspensions, which we purchase from a limited number of suppliers. Costs of raw materials and component parts represented approximately 67%63%, 66%65% and 69%65% of our consolidated net sales in 2015, 2014 2013 and 2012,2013, respectively. Raw material costs as a percentage of our consolidated net sales realized throughout 20142015 are in line with recent years asyears; however, we have seen some declining raw material commodity and component costs have remained relatively consistent as compared toin recent years.quarters. Significant price fluctuations or shortages in raw materials or finished components hashave had, and could have further, adverse effects on our results of operations. In 20152016 and for the foreseeable future, we expect that the raw materials used in the greatest quantity will be steel, aluminum, plastic and wood. We will endeavor to pass along any raw material and component cost increases and, to minimize the effect of price fluctuations, we hedge certain commodities whichthat have the potential to significantly impact our operations.

Backlog

Orders that have been confirmed by customers in writing, have defined delivery timeframes and can be produced during the next 18 months are included in our backlog. Orders that comprise our backlog may be subject to changes in quantities, delivery, specifications, terms or cancellation. Our backlog of orders at December 31, 20142015 and 20132014 was approximately $1,191 million and $1,087 million, respectively, and $711 million, respectively. Wewe expect to complete the majority of our existing backlog orders as of December 31, 2015 within the next 12 months.months of this date.

Patents and Intellectual Property

We hold or have applied for 93104 patents in the U.S. on various components and techniques utilized in our manufacture of transportation equipment and engineered products. In addition, we hold or have applied for 111126 patents in foreign countries.

Our patents include intellectual property related to the manufacture of trailers and aerodynamic-related products using our proprietary DuraPlate^® product, truck body, trailer, and aerodynamic-related products utilizing other composite materials, our containment and isolation systems, and other engineered products – all of which we believe offersoffer us a significant competitive advantage our containment and isolation systems, as well as other engineered products. in the markets in which we compete.

Our DuraPlate^®patent portfolio includes several patents and pending patent applications, which cover not only utilization of our DuraPlate^® product in the manufacture of trailers, but also cover a number of aerodynamic-related products aimed at increasing the fuel efficiency of trailers. Patents in our DuraPlate^® patent portfolio have expiration dates ranging from 2016 to 2030 with2035. While certain patents relating to the combined use of DuraPlate^® panels and logistics systems within the sidewallsidewalls of our dry van trailers expiringwill expire in 2016. However,2016, several other issued patents and pending patent applications relating to the use of DuraPlate® panels, or other composite materials, within aerodynamic-related products as well as modular storage and shipping containers will not begin to expire until 2035. Additionally, we also believe that our proprietary DuraPlate^® production process, which has been developed and refined since 1995, offers us a significant competitive advantage in the industry – above and beyond the benefits provided by any patent protection concerning the use and/or design of our DuraPlate^® products. While unpatented, we believe the proprietary knowledge of this process and the significant intellectual and capital hurdles in creating a similar production process provide us with an advantage over others in the industry who utilize composite sandwich panel technology.

Our intellectual property portfolio further includes a number of patent applications related to the manufacture of truck bodies and trailers using polymer composite component parts. These patent applications cover the polymer composite component structure and method of manufacturing the same. We believe the intellectual property related to this emerging use of polymer composite technology in our industry will offer us a significant market advantage to create proprietary products exploiting this technology. Additionally, our intellectual property portfolio includes patent applications related to the rear impact guard (RIG) of a trailer. These patent applications include new RIG designs which surpass the current and proposed federal regulatory RIG standards for the U.S. and Canada.

In addition, our intellectual property portfolio includes patents and patent applications covering many of our engineered products, including our containment and isolation systems, as well as many trailer industry components. These products have become highly desirable and are recognized for their innovation in the markets we serve. The engineered products patents and patent applications relate to our industry leading isolation systems, sold under the Walker Barrier Systems and Extract TechnologiesTechnology^® businesses.brand name. These patents have expiration dates ranging from 2015will not begin to 2030.expire until 2021. The patents and patent applications relating to our proprietary trailer-industry componentry include, for example, those covering the Trust Lock Plus^® door locking mechanism, the Max Clearanceuse of bonded intermediate logistics strips, the bonded D-ring hold-down device, bonded skylights, the DuraPlate^® arched roof, and the Max Clearance® Overhead Door System, which provides additional overhead clearance when an overhead-style rear door is in the opened position that would be comparable to that of swing-door models, the use of bonded intermediate logistics strips, the bonded D-ring hold-down device, bonded skylights, and the DuraPlate^® arched roof.models. The patents covering these products will not expire before 2029. Additionally, severalFurther, another patented productsproduct sold by the Diversified Products segment including products likeincludes the ShakerTank^® trailer, a vibrating bulk tank trailer used in transporting viscous materials, whose patents will not expire before 2026. We believe all of these proprietary products offer us a competitive market advantage in the industries in which we compete.

We also hold or have applied for 4446 trademarks in the U.S., as well as 5460 trademarks in foreign countries. These trademarks include the Wabash^®, Wabash National^®, Transcraft^®, Benson^®, TST^®, Extract TechnologiesTechnology^®, Beall^® and Brenner^® brand names as well as trademarks associated with our proprietary products such as DuraPlate^®, RoadRailer^®, Transcraft Eagle^®, Arctic Lite^®, and Benson^® trailers. Additionally, we utilize several tradenames that are each well-recognized in their industries, including Walker Transport, Walker Stainless Equipment, Walker Engineered Products, Walker Barrier Systems, Garsite, Bulk Tank International and Progress Tank. Our trademarks associated with additional proprietary products include Max Clearance^® Overhead Door System, Trust Lock Plus^®, EZ-7^®, DuraPlate AeroskirtAeroSkirt^®, DuraPlate AeroskirtAeroSkirt CX^TM, DuraPlate XD-35^®, DuraPlate HD^®, SolarGuard^®, Ventix DRS^TM, AeroFin^TM, AeroFin XL™ and EZ-Adjust^®. We believe these trademarks are important for the identification of our products and the associated customer goodwill; however, our business is not materially dependent on such trademarks.

Research and Development

Research and development expenses are charged to earnings as incurred and were $4.8 million, $1.7 million and $2.2 million in 2015, 2014 and $1.7 million in 2014, 2013, and 2012, respectively.

Environmental Matters

Our facilities are subject to various environmental laws and regulations including those relating to air emissions, wastewater discharges, the handling and disposal of solid and hazardous wastes and occupational safety and health. Our operations and facilities have been, and in the future may become, the subject of enforcement actions or proceedings for non-compliance with such laws or for remediation of company-related releases of substances into the environment. Resolution of such matters with regulators can result in commitments to compliance abatement or remediation programs and, in some cases, the payment of penalties (see Item 3 “Legal Proceedings”).

We believe that our facilities are in substantial compliance with applicable environmental laws and regulations. Our facilities have incurred, and will continue to incur, capital and operating expenditures and other costs in complying with these laws and regulations. However, we currently do not anticipate that the future costs of environmental compliance will have a material adverse effect on our business, financial condition or results of operations.

Employees

As of December 31, 20142015 and 2013,2014, we had approximately 5,300 and 5,100 and 4,800 full-time associates,employees, respectively. Throughout 2014,2015, essentially all of our active associatesemployees were non-union. Our temporary associatesemployees represented approximately 18%17% of our overall production workforce as of December 31, 20142015 as compared to approximately 20%18% at the end of the prior year period. We place a strong emphasis on maintaining good employee relations and development through competitive compensation and related benefits, a safe work environment and promoting educational programs and quality improvement teams.

Executive Officers of Wabash National Corporation

The following are the executive officers of the Company:

Richard J. Giromini.Mr. Giromini was promoted to President and Chief Executive Officer in January 2007. He had been Executive Vice President and Chief Operating Officer from February 2005 until December 2005 when he was appointed President and a Director of the Company. Prior to that, he had been Senior Vice President - Chief Operating Officer since joining the Company in July 2002. Mr. Giromini was with Accuride Corporation from April 1998 to July 2002, where he served in capacities as Senior Vice President - Technology and Continuous Improvement; Senior Vice President and General Manager - Light Vehicle Operations; and President and CEO of AKW LP. Previously, Mr. Giromini was employed by ITT Automotive, Inc. from 1996 to 1998 serving as the Director of Manufacturing. Mr. Giromini holds a Master of Science degree in Industrial Management and a Bachelor of Science degree in mechanicalMechanical and industrial engineering and a Master of Science degree in industrial management,Industrial Engineering, both from Clarkson University. He is also a graduate of the Advanced Management Program at the Duke University Fuqua School of Management.

Rodney P. Ehrlich. Mr. Ehrlich has been Senior Vice President – Chief Technology Officer of the Company since January 2004. From 2001 to 2003, Mr. Ehrlich was Senior Vice President of Product Development. Mr. Ehrlich has been in charge of the Company's engineering operations since the Company's founding. Prior to Wabash National, Mr. Ehrlich started with Monon Trailer Corporation in 1963 working various positions until becoming Chief Engineer in 1973, Director of Engineering in 1978, and serving until joining the founders of Wabash National in 1985. Mr. Ehrlich has obtained over 60 patents in trailer related design during his more than 50 year career in the trailer manufacturing business. Mr. Ehrlich holds a Bachelor of Science degree in Mechanical Engineering from Purdue University.

Bruce N. Ewald. Mr. Ewald’s original appointment was Vice President and General Manager of Wabash National Trailer Centers, Inc. when he joined the Company in March 2005. In October 2005, he was promoted to Senior Vice President – Sales and Marketing. Mr. Ewald has more than 30 years of experience in the transportation industry. Most recently, Mr. Ewald was with PACCAR from 1991 to February 2005 where he served in a number of executive-level positions. Prior to PACCAR, Mr. Ewald spent 10 years with Genuine Parts Co. where he served in several positions, including President and General Manager, Napa Auto Parts/Genuine Parts Co. Mr. Ewald holds a Bachelor of Science degree in Business from the University of Minnesota.

William D. Pitchford. Mr. Pitchford was promoted to Senior Vice President – Human Resources and Assistant Secretary in June 2013. He joined the Company in December 2011 as Vice President – Human Resources with an extensive Human Resource background including executive leadership, andtalent management, training and development, labor relations, employee relations,engagement, compensation planningdesign and organizational design.development. Prior to joining the Company, Mr. Pitchford served as Vice President - Human Resources for Rio Tinto Alcan Corporation in Chicago, Illinois, from January 2009 to December 2010 and was with Ford Motor Company for more than 30 years where he held a variety of key leadership positions including Human Resources Director, Labor Relations Director and Senior Human Resources Manager. Mr. Pitchford holds a Master of Arts degree in Personnel ManagementHuman Resources from Central Michigan University and a BachelorsBachelor of Science degree from Indiana State University.

Erin J. Roth. Effective January 2011, Ms. Roth was promoted to the position of Senior Vice President – General Counsel and Secretary followingin January 2011. Prior to her appointment in March 2010 to the position ofpromotion, she served as Vice President – General Counsel and Secretary. Ms. Roth joinedSecretary, beginning in March 2010, after first joining the Company in March 2007 as Corporate Counsel and was promoted in July 2009 to Senior Corporate Counsel. For the five yearsImmediately prior to joining the Company, Ms. Roth was engaged in the private practice of law with Barnes & Thornburg, LLP, representing a number of private and public companies throughout the U.S. Ms. Roth earned herholds a Juris Doctorate from the Georgetown University Law Center and a Bachelor of Science degree in Accounting from Butler University and her Juris Doctorate from the Georgetown University Law Center.University.

Jeffery L. Taylor. Mr. Taylor was appointed Senior Vice President and Chief Financial Officer in January 2014. Mr. Taylor joined the company in July 2012 as Vice President of Finance and Investor Relations and was promoted to Vice President – Acting Chief Financial Officer and Treasurer in June 2013. Prior to joining the Company, Mr. Taylor was with King Pharmaceuticals, Inc. from May 2006 to July 2011 as Vice President, Finance – Technical Operations, and with Eastman Chemical Company from June 1997 to May 2006 where he served in various positions of increasing responsibility within finance, accounting, investor relations and business management, including its Global Business Controller – Coatings, Adhesives, Specialty Polymers & Inks. Mr. Taylor earned his Bachelor of Science in Chemical Engineering from Arizona State University and his Masters of Business Administration from the University of Texas at Austin.Austin and his Bachelor of Science in Chemical Engineering from Arizona State University.

Mark J. Weber. Mr. Weber was appointed to Senior Vice President - Group President of Diversified Products Group in June 2013. Mr. Weber joined the Company in August 2005 as Director of Internal Audit, was promoted in February 2007 to Director of Finance, and in November 2007 to Vice President and Corporate Controller. In August 2009 Mr. Weber was then appointed to the position of Senior Vice President – Chief Financial Officer. Prior to joining the Company, Mr. Weber was with Great Lakes Chemical Corporation from October 1995 through August 2005 where he served in several positions of increasing responsibility within accounting and finance, including Vice President of Finance. Mr. Weber earned his Masters of Business Administration and Bachelor of Science in Accounting from Purdue University’s Krannert School of Management.

Brent L. Yeagy. Mr. Yeagy was appointed to Senior Vice President – Group President of Commercial Trailer Products Group in June 2013. He had been Vice President and General Manager for the Commercial Trailer Products Group since January 2010. Prior to that, he had been Vice President of Van Manufacturing since 2007. Mr. Yeagy has held numerous operations related roles since joining Wabash National in February 2003. Prior to joining the Company, Mr. Yeagy held various roles within Human Resources, Environmental Engineering and Safety Management for Delco Remy International from July 1999 through February 2003. Mr. Yeagy served in various Plant Engineering roles at Rexnord Corporation from December 1995 through July 1997. Mr. Yeagy is a veteran of the United States Navy, serving from 1991-1994.1991 to 1994. He received his Master degree inMasters of Business (MBA)Administration from Anderson University and his Master and Bachelor degrees in Science from Purdue University. He is also a graduate of the University of Michigan, Ross School of Business Program in Executive Management and the Stanford Executive Program.

ITEM 1A—RISK FACTORS

You should carefully consider the risks described below in addition to other information contained or incorporated by reference in this Annual Report before investing in our securities. Realization of any of the following risks could have a material adverse effect on our business, financial condition, cash flows and results of operations.

Risks Related to Our Business, Strategy and Operations

Our business is highly cyclical, which has had, and could have further, adverse effects on our sales and results of operations.

The truck trailer manufacturing industry historically has been and is expected to continue to be cyclical, as well as affected by overall economic conditions. Customers historically have replaced trailers in cycles that run from five to 12 years, depending on service and trailer type. Poor economic conditions can adversely affect demand for new trailers and have historically, and has currently, led to an overall aging of trailer fleets beyond a typical replacement cycle. Customers’ buying patterns can also be influenced by regulatory changes, such as federal hours-of-service rules as well as overall truck safety and federal emissions standards.

The steps we have taken to diversify our product offerings through the implementation of our strategic plan do not insulate us from this cyclicality. During downturns, we operate with a lower level of backlog and have had to temporarily slow down or halt production at some or all of our facilities, including extending normal shut down periods and reducing salaried headcount levels. An economic downturn may reduce, and in the past has reduced, demand for trailers, resulting in lower sales volumes, lower prices and decreased profits or losses.

Demand for new trailers has been and will continue to be sensitive to economic conditions over which we have no control and that may adversely affect our revenues and profitability.

Demand for trailers is sensitive to changes in economic conditions such as the level of employment, consumer confidence, consumer income, new housing starts, government regulations and the availability of financing and interest rates. The status of these economic conditions periodically have an adverse effect on truck freight and the demand for and the pricing of our trailers, and have also resulted in, and could continue to result in, the inability of customers to meet their contractual terms or payment obligations, which could cause our operating revenues and profits to decline.

We may not be able to execute on our long-term strategic plan and growth initiatives, or meet our long-term financial goals.

Our long-term strategic plan is intended to generate long-term value for our shareholders by transforming Wabash National into a diversified industrial manufacturer while delivering profitable growth through all our business segments.  The long-term financial goals that we expect to achieve as a result of our long-term strategic plan and organic growth initiatives are based on certain assumptions, which may prove to be incorrect. We cannot provide any assurance that we will be able to fully execute on our strategic plan or growth initiatives, which are subject to a variety of risks, including, but not limited to, our ability to: diversify the product offerings of our non-trailer businesses; leverage acquired businesses and assets to grow sales with our existing products; design and develop new products to meet the needs of our customers; increase the pricing of our products and services to offset cost increases and expand gross margins; and execute potential future acquisitions, mergers, and other business development opportunities. If we are unable to successfully execute on our strategic plan, we may experience increased competition, adverse financial consequences and a decrease in the value of our stock. Additionally, our management’s attention to the implementation of the strategic plan, which includes our efforts at diversification, may distract them from implementing our core business which may also have adverse financial consequences.

Demand for new trailers is sensitive to economic conditions over which we have no control and that may adversely affect our revenues and profitability.

Demand for trailers is sensitive to changes in economic conditions such as the level of employment, consumer confidence, consumer income, new housing starts, industrial production, government regulations and the availability of financing and interest rates. The status of these economic conditions periodically have an adverse effect on truck freight and the demand for and the pricing of our trailers, and have also resulted in, and could in the future result in, the inability of customers to meet their contractual terms or payment obligations, which could cause our operating revenues and profits to decline.

We have a limited number of suppliers of raw materials and components; increases in the price of raw materials or the inability to obtain raw materials could adversely affect our results of operations.

We currently rely on a limited number of suppliers for certain key components and raw materials in the manufacturing of our products, such as tires, landing gear, axles, suspensions, and specialty steel coil, used in DuraPlate^® panels.stainless steel, plastic, aluminum and lumber. From time to time, there have been and may in the future be shortages of supplies of raw materials or components, or our suppliers may place us on allocation, which would have an adverse impact on our ability to meet demand for our products. Shortages and allocations may result in inefficient operations and a build-up of inventory, which can negatively affect our working capital position. In addition, price volatility in commodities we purchase which impactthat impacts the pricing of raw materials could have negative impacts on our operating margins. The loss of any of our suppliers or their inability to meet our price, quality, quantity and delivery requirements could have a significant adverse impact on our results of operations.

Global economic weakness could negatively impact our operations and financial performance.

While the trailer industry has recently experienced a period of economic recovery, we cannot provide any assurances that we will be profitable in future periods or that we will be able to sustain or increase profitability in the future. Increasing our profitability will depend on several factors, including, but not limited to, our ability to increase our overall trailer volumes, improve our gross margins, gain continued momentum on our product diversification efforts and manage our expenses.If we are unable to generatesustain profitability in the future, we may not be able to meet our payment and other obligations under our outstanding debt agreements.

We continue to be reliant on the credit, housing and construction-related markets in the U.S. The same general economic concerns faced by us are also faced by our customers. We believe that some of our customers are highly leveraged, have limited access to capital, and their continued existence may be reliant on liquidity from global credit markets and other sources of external financing. Lack of liquidity by our customers could impact our ability to collect amounts owed to us. While we have taken steps to address these concerns through the implementation of our strategic plan, we are not immune to the pressures being faced by our industry or the global economy, and our results of operations may decline.

A change in our customer relationships or in the financial condition of our customers has had, and could have further, adverse effects on our business.

We have longstanding relationships with a number of large customers to whom we supply our products. We do not have long-term agreements with these customers. Our success is dependent, to a significant extent, upon the continued strength of these relationships and the growth of our core customers. We often are unable to predict the level of demand for our products from these customers, or the timing of their orders. In addition, the same economic conditions that adversely affect us also often adversely affect our customers. Furthermore, we are subject to a concentration of risk as the five largest customers together accounted for approximately 20%25% of our aggregate net sales in 2015 and there have been customers historically who have individually accounted for greater than 10% of our aggregate net sales. The loss of a significant customer or unexpected delays in product purchases could further adversely affect our business and results of operations.

Significant competition in the industries in which we operate may result in our competitors offering new or better products and services or lower prices, which could result in a loss of customers and a decrease in our revenues.

The industries in which we participate are highly competitive. We compete with other manufacturers of varying sizes, some of which have substantial financial resources. Trailer manufacturers compete primarily on the quality of their products, customer relationships, service availability and price. Barriers to entry in the standard truck trailer manufacturing industry are low. As a result, it is possible that additional competitors could enter the market at any time. In the recent past, manufacturing over-capacity and high leverage of some of our competitors, along with bankruptcies and financial stresses that affected the industry, contributed to significant pricing pressures.

If we are unable to successfully compete with other trailer manufacturers, we could lose customers and our revenues may decline. In addition, competitive pressures in the industry may affect the market prices of our new and used equipment, which, in turn, may adversely affect our sales margins and results of operations.

Our backlog ismay not necessarilybe indicative of the level of our future revenues.

Our backlog represents future production for which we have written orders from our customers that can be produced or sold in the next 18 months. Orders that comprise our backlog may be subject to changes in quantities, delivery, specifications and terms, or cancellation, and our reported backlog may not be converted to revenue in any particular period and actual revenue from such orders may not equal our backlog. Therefore, our backlog ismay not necessarilybe indicative of the level of our future revenues.

International operations are subject to increased risks, which could harm our business, operating results and financial condition.

Our ability to manage our business and conduct operations internationally requires considerable management attention and resources and is subject to a number of risks, including the following:

Compliance with complex foreign and U.S. laws and regulations that apply to international operations may increase our cost of doing business and could expose us or our employees to fines, penalties and other liabilities. These numerous and sometimes conflicting laws and regulations include import and export requirements, content requirements, trade restrictions, tax laws, environmental laws and regulations, sanctions, internal and disclosure control rules, data privacy requirements, labor relations laws, U.S. laws such as the Foreign Corrupt Practices Act and substantially equivalent local laws prohibiting corrupt payments to governmental officials and/or other foreign persons. Although we have policies and procedures designed to ensure compliance with these laws and regulations, there can be no assurance that our officers, employees, contractors or agents will not violate our policies. Any violation of the laws and regulations that apply to our operations and properties could result in, among other consequences, fines, environmental and other liabilities, criminal sanctions against us, our officers or our employees, prohibitions on our ability to offer our products and services to one or more countries and could also materially damage our reputation, our brand, our efforts to diversify our business, our ability to attract and retain employees, our business and our operating results.

Our technology and products may not achieve market acceptance or competing products could gain market share, which could adversely affect our competitive position.

We continue to optimize and expand our product offerings to meet our customer needs through our established brands, such as DuraPlate^®, DuraPlateHD^®, DuraPlate^® XD-35^®, DuraPlate Aeroskirt^®, FreightProAeroSkirt^®, ArcticLite^®, Transcraft^®, Eagle^®, Benson^®, Walker Stainless Equipment,Transport, Brenner^® Tank, Garsite, Progress Tank, TST^®, Bulk Tank International, and Extract Technology^®. While we target product development to meet customer needs, there is no assurance that our product development efforts will be embraced and that we will meet our sales projections. Companies in the truck transportation industry, a very fluid industry in which our customers primarily operate, make frequent changes to maximize their operations and profits.

Over the past several years, we have seen a number of our competitors follow our leadership in the development and use of composite sidewalls that bring them into direct competition with our DuraPlate^®â products. Our product development is focused on maintaining our leadership for these products but competitive pressures may erode our market share or margins. We hold patents on various components and techniques utilized in our manufacturing of transportation equipment and engineered products with expiration dates ranging from 20152016 to 2030.2035. We continue to take steps to protect our proprietary rights in our products and the processes used to produce them. However, the steps we have taken may not be sufficient or may not be enforced by a court of law. If we are unable to protect our intellectual properties, other parties may attempt to copy or otherwise obtain or use our products or technology. If competitors are able to use our technology, our ability to effectively compete could be harmed. In addition, litigation related tointellectual property could result in substantial costs and efforts which may not result in a successful outcome.

Disruption of our manufacturing operations would have an adverse effect on our financial condition and results of operations.

We manufacture our van trailer products at two facilities in Lafayette, Indiana, a flatbed and dump-body trailer facility in Cadiz, Kentucky, a hardwood floor facility in Harrison, Arkansas, six liquid-transportation systems facilities in New Lisbon, Wisconsin; Fond du Lac, Wisconsin; Kansas City, Missouri; Kansas City, Kansas; Portland, Oregon; and Queretaro, Mexico, and three engineered products facilities in New Lisbon, Wisconsin; Elroy, Wisconsin; and Huddersfield, United Kingdom.Kingdom and produce DuraPlate^® products at facilities in Lafayette, Indiana and Frankfort, Indiana. An unexpected disruption in our production at any of these facilities for any length of time would have an adverse effect on our business, financial condition and results of operations.

The inability to attract and retain key personnel could adversely affect our results of operations.

Our ability to operate our business and implement our strategies depends, in part, on the efforts of our executive officers and other key employees.associates. Our future success depends, in large part, on our ability to attract and retain qualified personnel, including manufacturing personnel, sales professionals and engineers. The unexpected loss of services of any of our key personnel or the failure to attract or retain other qualified personnel could have a material adverse effect on the operation of our business.

We rely significantly on information technology to support our operations and if we are unable to protect against service interruptions or security breaches, our business could be adversely impacted.

We depend on a number of information technologies to integrate departments and functions, to enhance the ability to service customers, to improve our control environment and to manage our cost reduction initiatives. We have put in place a number of systems, processes, and practices designed to protect against the failure of our systems, as well as the misappropriation, exposure or corruption of the information stored thereon. Unintentional service disruptions or intentional actions such as intellectual property theft, cyber-attacks, unauthorized access or malicious software, may lead to such misappropriation, exposure or corruption if our protective measures prove to be inadequate. Any issues involving these critical business applications and infrastructure may adversely impact our ability to manage operations and the customers we serve. We could also encounter violations of applicable law or reputational damage from the disclosure of confidential business, customer, or employee information or the failure to protect the privacy rights of our employees in their personal identifying information. In addition, the disclosure of non-public information could lead to the loss of our intellectual property and diminished competitive advantages. Should any of the foregoing events occur, we may be required to incur significant costs to protect against damage caused by these disruptions or security breaches in the future.

Significant competition in the industries in which we operate may result in our competitors offering new or better products and services or lower prices, which could result in a loss of customers and a decrease in our revenues.

The industries in which we participate are highly competitive. We compete with other manufacturers of varying sizes, some of which have substantial financial resources. Trailer manufacturers compete primarily on the quality of their products, customer relationships, service availability and price. Barriers to entry in the standard truck trailer manufacturing industry are low. As a result, it is possible that additional competitors could enter the market at any time. In the recent past, manufacturing over-capacity and high leverage of some of our competitors, along with bankruptcies and financial stresses that affected the industry, contributed to significant pricing pressures.

If we are unable to successfully compete with other trailer manufacturers, we could lose customers and our revenues may decline. In addition, competitive pressures in the industry may affect the market prices of our new and used equipment, which, in turn, may adversely affect our sales margins and results of operations.

We are subject to extensive governmental laws and regulations, and our costs related to compliance with, or our failure to comply with, existing or future laws and regulations could adversely affect our business and results of operations.

The length, height, width, maximum weight capacity and other specifications of truck and tank trailers are regulated by individual states. The federal government also regulates certain trailer safety features, such as lamps, reflective devices, tires, air-brake systems and rear-impact guards. In addition, most tank trailers we manufacture have specific federal regulations and restrictions that dictate tank design, material type and thickness. Changes or anticipation of changes in these regulations can have a material impact on our financial results, as our customers may defer purchasing decisions and we may have to re-engineer products. We are subject to various environmental laws and regulations dealing with the transportation, storage, presence, use, disposal and handling of hazardous materials, discharge of storm water and underground fuel storage tanks, and we may be subject to liability associated with operations of prior owners of acquired property. In addition, we are subject to laws and regulations relating to the employment of our associatesemployees and labor-related practices.

If we are found to be in violation of applicable laws or regulations in the future, it could have an adverse effect on our business, financial condition and results of operations. Our costs of complying with these or any other current or future regulations may be material. In addition, if we fail to comply with existing or future laws and regulations, we may be subject to governmental or judicial fines or sanctions.

New regulationsRegulations related to conflict-free minerals may force us to incur additional expenses and otherwise adversely affect our business and results of operations.

As mandated by the Dodd-Frank Wall Street Reform and Consumer Protection Act, the Securities and Exchange Commission adopted rules regarding disclosure of the use of certain minerals, known as conflict minerals, originating from the Democratic Republic of Congo or adjoining countries. These new requirements require ongoing due diligence efforts with initialand disclosure requirements made in May 2014.requirements. We may incur significant costs to determine the source of any such minerals used in our products. We may also incur costs with respect to potential changes to products, processes or sources of supply as a consequence of our diligence activities. Further, the implementation of these rules and their effect on customer and/or supplier behavior could adversely affect the sourcing, supply and pricing of materials used in our products, as the number of suppliers offering conflict-free minerals could be limited. We may incur additional costs or face regulatory scrutiny if we determine that some of our products contain materials not determined to be conflict-free or if we are unable to sufficiently verify the origins of all conflict minerals used in our products. Accordingly, the implementation ofcompliance with these rules could have a material adverse effect on our business, results of operations and/or financial condition.

Product liability and other legal claims could have an adverse effect on our financial condition and results of operations.

As a manufacturer of products widely used in commerce, we are subject to product liability claims and litigation, as well as warranty claims. From time to time claims may involve material amounts and novel legal theories, and any insurance we carry may not provide adequate coverage to insulate us from material liabilities for these claims.

In addition to product liability claims, we are subject to legal proceedings and claims that arise in the ordinary course of business, such as workers' compensation claims, OSHA investigations, employment disputes and customer and supplier disputes arising out of the conduct of our business. Litigation may result in substantial costs and may divert management's attention and resources from the operation of our business, which could have a material adverse effect on our business, results of operations or financial condition.As described in more detail in “Item 3-LegalItem 3 “Legal Proceedings” below, we are currently appealing a judgment rendered by the Fourth Civil Court of Curitiba, Brazil, in a lawsuit that has been pending since 2001. While we are appealing this judgment, which renders it unenforceable at this time, and the Brazilian Court of Appeals has the authority to render a new judgment in the case without any regard to the lower court’s findings, the ultimate outcome of the case is uncertain and the resolution of this litigation may result in us incurring substantial costs that are not covered by insurance.

An impairment in the carrying value of goodwill and other long-lived intangible assets could negatively affect our operating results.

We have a substantial amount of goodwill and purchased intangible assets on our balance sheet as a result of acquisitions. At December 31, 2014,2015, approximately 90% of these long-lived intangible assets were concentrated in our Diversified Products segment. The carrying value of goodwill represents the fair value of an acquired business in excess of identifiable assets and liabilities as of the acquisition date. The carrying value of other long-lived intangible assets represents the fair value of trademarks and trade names, customer relationships and technology as of the acquisition date, net of any accumulated amortization. Under generally accepted accounting principles, goodwill is required to be reviewed for impairment at least annually, or more frequently if potential interim indicators exist that could result in impairment, and other long-lived intangible assets require review for impairment only when indicators exist. If any business conditions or other factors cause profitability or cash flows to significantly decline, we may be required to record a non-cash impairment charge, which could adversely affect our operating results. Events and conditions that could result in impairment include a prolonged period of global economic weakness, a further decline in economic conditions or a slow, weak economic recovery, sustained declines in the price of our common stock, adverse changes in the regulatory environment, adverse changes in the market share of our products, adverse changes in interest rates, or other factors leading to reductions in the long-term sales or profitability that we expect.

The full utilization of our remaining U.S. federal income tax net operating loss carryforwards has significantly increased, and will continue to significantly increase, our cash tax payments and may adversely impact our ability to fund operations.

During 2014 we utilized all of our remaining U.S. Federal income tax net operating loss carryforwards and credit carryforwards and, therefore, experienced an increase in our cash tax payments in 2014 as compared to previous years. We anticipate further increases in our tax payments in 2015, which could limit the amount of liquidity available to fund working capital, capital expenditures or other strategic initiatives.

Our ability to fund operations is limited by our cash on hand and available borrowing capacity under our revolving credit facility.

We believe our liquidity, defined as cash on hand and available borrowing capacity, on December 31, 20142015 of $289.9$347.9 million and our expected continued improvements in profitability will be more than adequate to fund working capital requirements and capital expenditures throughout 2015,2016, which we expect to be a period of continued strong demand within the trailer manufacturing industry. Furthermore, we continue to have the option, subject to certain conditions, to request an additional incremental increase of $50 million to the total commitment of our revolving credit facility of $50 million.facility. Our liquidity position as of December 31, 20142015 represented an increase of $35.6$58.0 million and $65.6$93.6 million from December 31, 20132014 and 2012,2013, respectively. Our ability to fund our working capital needs and capital expenditures is limited by the net cash provided by operations, cash on hand and available borrowings under our revolving credit facility. Declines in net cash provided by operations, increases in working capital requirements necessitated by an increased demand for our products and services, further decreases in the availability under the revolving credit facility or changes in the credit our suppliers provide to us, could rapidly exhaust our liquidity.

Risks Related to Our Indebtedness

Our levels of indebtedness could adversely affect our business, financial condition and results of operations and our ability to meet our payment obligations under our debt agreements.

Our debt and debt service obligations increased significantly in 2012 as a result of the offering of our 3.375% Convertible Senior Notes Due 2018 (“Notes”) in April 2012, entering into the Term Loan Credit Agreement in May 2012, which was subsequently amended in May 2013, and the amendment and restatement of our revolving credit agreement. As of December 31, 2014, and as a result of these events,2015, we had $352$326 million of indebtedness, including: $193$191 million secured debt, $150$131 million unsecured debt, $7$3 million in capital lease obligations and $2$1 million in an industrial revenue bond. This level of debt could have significant consequences on our future operations, including, among others:

Any of the factors listed above could have a material adverse effect on our business, financial condition and results of operations and our ability to meet our payment obligations under our debt agreements.

Servicing our debt will require a significant amount of cash, and we may not have sufficient cash flow from our business to pay our debt obligations.

Our ability to make scheduled principal payments of, to pay interest on or to refinance our indebtedness depends on our future performance, which is subject to regulatory, economic, financial, competitive and other factors beyond our control. While we do not have significant scheduled principal payments until 2018, our business may not continue to generate cash flow from operations in the future sufficient to service our debt and make necessary capital expenditures. If we are unable to generate such cash flow, we may be required to adopt one or more alternatives, such as selling assets, restructuring debt or obtaining additional equity capital on terms that may be onerous or highly dilutive. Our ability to refinance our indebtedness will depend on the capital markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable terms, which could result in a default on our debt obligations.

Despite our current debt levels, we may still incur substantially more debt or take other actions that would intensify the risks discussed above.

Despite our current consolidated debt levels, we and our subsidiaries may be able to incur substantial additional debt in the future, subject to the restrictions contained in our debt instruments, some of which may be secured debt. We are not restricted under the terms of the indenture governing theour Convertible Senior Notes due 2018 (the “Notes”) from incurring additional debt, securing existing or future debt, recapitalizing our debt or taking a number of other actions that are not limited by the terms of the indenture governing the Notes. Our Amended and Restated Revolving Credit Agreement restricts our ability to incur additional indebtedness, including secured indebtedness, but if the facilities mature or are repaid, we may not be subject to such restrictions under the terms of any subsequent indebtedness.

The conditional conversion feature of the Notes, if triggered, may adversely affect our financial condition and operating results.

In the event the conditional conversion feature of the Notes is triggered, holders of Notes will be entitled to convert the Notes at any time during specified periods at their option. If one or more holders elect to convert their Notes, unless we elect to satisfy our conversion obligation by delivering solely shares of our common stock (other than cash in lieu of any fractional share), we would be required to settle a portion or all of our conversion obligation through the payment of cash, which could adversely affect our liquidity. In addition, even if holders do not elect to convert their Notes, we could be required under applicable accounting rules to reclassify all or a portion of the outstanding principal of the notes as a current rather than long-term liability, which would result in a material reduction of our working capital.

Future sales of our common stock in the public market could lower the market price for our common stock.

In the future, we may sell additional shares of our common stock to raise capital. In addition, a substantial number of shares of our common stock are reserved for issuance upon the exercise of stock options and upon conversion of the Notes. We cannot predict the size of future issuances or the effect, if any, that they may have on the market price for our common stock. The issuance and sale of substantial amounts of common stock, or the perception that such issuances and sales may occur, could adversely affect the market price of our common stock and impair our ability to raise capital through the sale of additional equity securities.

Provisions of the Notes could discourage a potential future acquisition of us by a third party.

Certain provisions of the Notes could make it more difficult or more expensive for a third party to acquire us. Upon the occurrence of certain transactions constituting a fundamental change, holders of the Notes will have the right, at their option, to require us to repurchase all of their Notes or any portion of the principal amount of such Notes in integral multiples of $1,000. We also may be required to issue additional shares upon conversion in the event of certain corporate transactions. In addition, the indenture for the Notes prohibits us from engaging in certain mergers or acquisitions unless, among other things, the surviving entity assumes our obligations under the Notes. These and other provisions of the Notes could prevent or deter a third party from acquiring us even where the acquisition could be beneficial to our stockholders.

Our Term Loan Credit Agreement as amended, and revolving credit facility contain restrictive covenants that, if breached, could limit our financial and operating flexibility and subject us to other risks.

Our Term Loan Credit Agreement as amended, and revolving credit facility include certain financial covenants. Breaching those financial covenants would trigger an event of default and our lenders may, subject to various customary cure rights, require the immediate payment of all amounts outstanding and foreclose on the collateral.

These debt facilities contain customary covenants limiting our ability to, among other things, pay cash dividends, incur debt or liens, redeem or repurchase stock, enter into transactions with affiliates, merge, dissolve, repay subordinated indebtedness, make investments and dispose of assets. As required under our Term Loan Credit Agreement, as amended, we must maintain a maximum senior secured leverage ratio tested as of the last day of each fiscal quarter for the four consecutive fiscal quarters then ending of not more than (A) 4.5 to 1.0 through September 30, 2013, (B) 4.0 to 1.0 thereafter through September 30, 2015, and (C) 3.5 to 1.0 thereafter. In addition, under our revolving credit facility, we are required to maintain a minimum fixed charge coverage ratio of not less than 1.1 to 1.0 as of the end of any period of 12 fiscal months when excess availability under the Amended and Restated Revolving Credit Agreement is less than 12.5%10% of the total revolving commitment. As of December 31, 2014, our senior secured leverage ratio was 0.3:1.0, and in compliance with all covenants under the Term Loan Credit Agreement, as amended.

If availability under the Amended and Restated Revolving Credit Agreement is less than 15%12.5% of the total revolving commitment or if there exists an event of default, amounts in any of the Borrowers’ and the Revolver Guarantors’ deposit accounts (other than certain excluded accounts) will be transferred daily into a blocked account held by the Revolver Agent and applied to reduce the outstanding amounts under the facility.

As of December 31, 2014,2015, we werebelieve we are in compliance with all covenants underthe provisions of both our Term Loan Credit Agreement as amended, and our revolving credit facility. Our ability to comply with the various financial covenantsterms and conditions in the future may be affected by events beyond our control, including prevailing economic, financial and industry conditions.

Risks Related to an Investment in Our Common Stock

Our common stock has experienced, and may continue to experience, price and trading volume volatility.

The trading price and volume of our common stock has been and may continue to be subject to large fluctuations. The market price and volume of our common stock may increase or decrease in response to a number of events and factors, including:

Also, shareholders may from time to time engage in proxy solicitations, advance shareholder proposals or otherwise attempt to effect changes or acquire control over the Company. Such shareholder campaigns could disrupt the Company’s operations and divert the attention of the Company’s Board of Directors and senior management and employees from the pursuit of business strategies and adversely affect the Company’s results of operations and financial condition.

This volatility may adversely affect the prices of our common stock regardless of our operating performance. To the extent that the price of our common stock declines, our ability to raise funds through the issuance of equity or otherwise use our common stock as consideration will be reduced. These factors may limit our ability to implement our operating and growth plans.

ITEM 1B—UNRESOLVED STAFF COMMENTS

None.

ITEM 2—PROPERTIES

Our main Lafayette, Indiana facility is a 1.2 million square foot facility that houses truck trailer, truck body and composite material production, tool and die operations, research and development laboratories and offices. Our second Lafayette, Indiana facility is 0.8 million square feet and used primarily for the production of refrigerated van and liquid tank trailers. In total, our main facilities have the capacity to produce approximately 80,000 trailers annually on a three shift, five-day workweek schedule, depending on the mix of products.

We have 15 Retail branch facilities located throughout North America. Each sales and service branch consists of an office, parts warehouse and service space, and ranges in size from 4,000 to 70,000 square feet per facility. The 15 facilities are located in 11 states withand seven of the facilities beingare leased.

Properties owned by Wabash are subject to security interests held by our lenders. We believe the facilities we are now using are adequate and suitable for our current business operations and the currently foreseeable level of operations. The following table provides information regarding the locations of our major facilities locatedwhich are in the following areas in the United States, Mexico and United Kingdom:

ITEM 3—LEGAL PROCEEDINGS

We are involved in a number of legal proceedings concerning matters arising in connection with the conduct of our business activities, and are periodically subject to governmental examinations (including by regulatory and tax authorities), and information gathering requests (collectively, "governmental examinations"). As of December 31, 2014,2015, we were named as a defendant or were otherwise involved in numerous legal proceedings and governmental examinations in various jurisdictions, both in the United States and internationally.

We have recorded liabilities for certain of our outstanding legal proceedings and governmental examinations. A liability is accrued when it is both (a) probable that a loss with respect to the legal proceeding has occurred and (b) the amount of loss can be reasonably estimated. We evaluate, on a quarterly basis, developments in legal proceedings and governmental examinations that could cause an increase or decrease in the amount of the liability that has been previously accrued. These legal proceedings, as well as governmental examinations, involve various lines of business and a variety of claims (including, but not limited to, common law tort, contract, antitrust and consumer protection claims), some of which present novel factual allegations and/or unique legal theories. While some matters pending against us specify the damages claimed by the plaintiff, many seek a not-yet-quantified amount of damages or are at very early stages of the legal process. Even when the amount of damages claimed against Wabash is stated, the claimed amount may be exaggerated and/or unsupported. As a result, it is not currently possible to estimate a range of possible loss beyond previously accrued liabilities relating to some matters including those described below. Such previously accrued liabilities may not represent our maximum loss exposure. The legal proceedings and governmental examinations underlying the estimated range will change from time to time and actual results may vary significantly from the currently accrued liabilities.

Based on our current knowledge, and taking into consideration litigation-related liabilities, we believe we are not a party to, nor is any of our properties the subject of, any pending legal proceeding or governmental examination other than the matters below, which are addressed individually, that could have a material adverse effect on our consolidated financial condition or liquidity if determined in a manner adverse to us. However, in light of the uncertainties involved in such matters, the ultimate outcome of a particular matter could be material to our operating results for a particular period depending on, among other factors, the size of the loss or liability imposed and the level of our income for that period. Costs associated with the litigation and settlements of legal matters are reported withinGeneral and Administrative Expenses in the Consolidated Statements of Operations.

Brazil Joint Venture

In March 2001, Bernard Krone Indústria e Comércio de Máquinas Agrícolas Ltda. (“BK”) filed suit against us in the Fourth Civil Court of Curitiba in the State of Paraná, Brazil. Because of the bankruptcy of BK, this proceeding is now pending before the Second Civil Court of Bankruptcies and Creditors Reorganization of Curitiba, State of Paraná (No. 232/99).

The case grows out of a joint venture agreement between BK and Wabash related to marketing of RoadRailer trailers in Brazil and other areas of South America. When BK was placed into the Brazilian equivalent of bankruptcy late in 2000, the joint venture was dissolved. BK subsequently filed its lawsuit against Wabash alleging that it was forced to terminate business with other companies because of the exclusivity and non-compete clauses purportedly found in the joint venture agreement. BK asserted damages, exclusive of any potentially court-imposed interest or inflation adjustments, of approximately R$20.8 million (Brazilian Reais). BK did not change the amount of damages it asserted following its filing of the case in 2001.

A bench (non-jury) trial was held on March 30, 2010 in Curitiba, Paraná, Brazil. On November 22, 2011, the Fourth Civil Court of Curitiba partially granted BK’s claims, and ordered Wabash to pay BK lost profits, compensatory, economic and moral damages in excess of the amount of compensatory damages asserted by BK. The total ordered damages amount is approximately R$26.7 million (Brazilian Reais), which is approximately $10.0$6.9 million U.S. dollars using current exchange rates and exclusive of any potentially court-imposed interest, fees or inflation adjustments (which are currently estimated at a maximum of approximately $58$48 million, at current exchange rates, but may change with the passage of time and/or the discretion of the court at the time of final judgment in this matter). Due, in part, to the amount and type of damages awarded by the Fourth Civil Court of Curitiba, Wabash immediately filed for clarification of the judgment. The Fourth Civil Court has issued its clarification of judgment, leaving the underlying decision unchanged and referring the parties to the State of Paraná Court of Appeals for any further appeal of the decision. As such, Wabash filed its notice of appeal with the Court of Appeals, as well as its initial appeal papers, on April 22, 2013. The Court of Appeals has the authority to re-hear all facts presented to the lower court, as well as to reconsider the legal questions presented in the case, and to render a new judgment in the case without regard to the lower court’s findings. Pending outcome of this appeal process, the judgment is not enforceable by the plaintiff. Any ruling from the Court of Appeals is not expected before the second halfquarter of 2015,2016, and, accordingly, the judgment rendered by the lower court cannot be enforced prior to that time, and may be overturned or reduced as a result of this process. We believe that the claims asserted by BK are without merit and we intend to continue to vigorously defend our position. We have not recorded a charge with respect to this loss contingency as of December 31, 2014.2015. Furthermore, at this time, we do not have sufficient information to predict the ultimate outcome of the case and is unable to reasonably estimate the amount of any possible loss or range of loss that it may be required to pay at the conclusion of the case. We will reassess the need for the recognition of a loss contingency upon official assignment of the case in the Court of Appeals, upon a decision to settle this case with the plaintiffs or an internal decision as to an amount that we would be willing to settle or upon the outcome of the appeals process.

Intellectual Property

In October 2006, we filed a patent infringement suit against Vanguard National Corporation (“Vanguard”) regarding our U.S. Patent Nos. 6,986,546 and 6,220,651 in the U.S. District Court for the Northern District of Indiana (Civil Action No. 4:06-cv-135). We amended the Complaint in April 2007. In May 2007, Vanguard filed its Answer to the Amended Complaint, along with Counterclaims seeking findings of non-infringement, invalidity, and unenforceability of the subject patents. We filed a reply to Vanguard’s counterclaims in May 2007, denying any wrongdoing or merit to the allegations as set forth in the counterclaims. The case has currently been stayed by agreement of the parties while the U.S. Patent and Trademark Office (“Patent Office”) undertakes a reexamination of U.S. Patent Nos. 6,986,546. In June 2010, the Patent Office notified Wabash that the reexamination is complete and the Patent Office has reissued U.S. Patent No. 6,986,546 without cancelling any claims of the patent. The parties have not yet petitioned the Court to lift the stay, and it is unknown at this time when the parties’ petition to lift the stay may be filed or granted.

We believe that our claims against Vanguard have merit and that the claims asserted by Vanguard are without merit. We intend to vigorously defend our position and intellectual property. We believe that the resolution of this lawsuit will not have a material adverse effect on our financial position, liquidity or future results of operations. However, at this stage of the proceeding, no assurance can be given as to the ultimate outcome of the case.

Walker Acquisition

In connection with our acquisition of Walker in May 2012, there is an outstanding claim of approximately $2.9 million for unpaid benefits owed by the Seller that is currently in dispute and that is not expected to have a material adverse effect on our financial condition or results of operations.

Environmental Disputes

In August 2014, we were noticed as a potentially responsible party (“PRP”) by the South Carolina Department of Health and Environmental Control (“DHEC”) pertaining to the Philip Services Site located in Rock Hill, South Carolina pursuant to the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) and corresponding South Carolina statutes. PRPs include parties identified through manifest records as having contributed to deliveries of hazardous substances to the Philip Services Site between 1979 and 1999. The DHEC’s allegation that we are a PRP arises out of four manifest entries in 1989 under the name of a company unaffiliated with Wabash National (or any of its former or current subsidiaries) that purport to be delivering a de minimis amount of hazardous waste to the Philip Services Site “c/o Wabash National Corporation.” As such, the Philip Services Site PRP Group (“PRP Group”) notified Wabash in August 2014 that isit was offering us the opportunity to resolve any liabilities associated with the Philip Services Site by entering into a Cash Out and Reopener Settlement Agreement (the “Settlement Agreement”) with the PRP Group, as well as a Consent Decree with the DHEC. We have accepted an offer from the PRP Group to enter into the Settlement Agreement and Consent Decree, while reserving our rights to contest our liability for any deliveries of hazardous materials to the Philips Services Site. The requested settlement payment is immaterial to Wabash’s financial conditions or operations, and as a result, if the Settlement Agreement and Consent Decree are finalized, our agreement to become a party to them is not expected to have a material adverse effect on our financial condition or results of operations.

Bulk Tank International, S. de R.L. de C.V. (“Bulk”), one of the companies acquired in the Walker Acquisition,acquisition, entered into agreements in 2011 with the Mexican federal environmental agency, PROFEPA, and the applicable state environmental agency, PROPAEG, pursuant to PROFEPA’s and PROPAEG’s respective environmental audit programs to resolve noncompliance with federal and state environmental laws at Bulk’s Guanajuato facility. Bulk completed all required corrective actions and received a Certification of Clean Industry from PROPAEG, and is seeking the same certification from PROFEPA, which we expect it will receive following the conclusion of a final audit process that occurredcommenced in December 2014. As a result, we do not expect that this matter will have a material adverse effect on our financial condition or results of operations.

In January 2012, we were noticed as a PRP by the U.S. Environmental Protection Agency (“EPA”) and the Louisiana Department of Environmental Quality (“LDEQ”) pertaining to the Marine Shale Processors Site located in Amelia, Louisiana (“MSP Site”) pursuant to CERCLA and corresponding Louisiana statutes. PRPs include current and former owners and operators of facilities at which hazardous substances were allegedly disposed. The EPA’s allegation that we are a PRP arises out of one alleged shipment of waste to the MSP Site in 1992 from the Company’s branch facility in Dallas, Texas. As such, the MSP Site PRP Group notified Wabash in January 2012 that, as a result of a March 18, 2009 Cooperative Agreement for Site Investigation and Remediation entered into between the MSP Site PRP Group and the LDEQ, we were being offered a “De Minimis Cash-Out Settlement” to contribute to the remediation costs, which would remain open until February 29, 2012. We chose not to enter into the settlement and have denied any liability. In addition, we have requested that the MSP Site PRP Group remove the Company from the list of PRPs for the MSP Site, based upon the following facts: we acquired this branch facility in 1997 – five years after the alleged shipment - as part of the assets we acquired out of the Fruehauf Trailer Corporation (“Fruehauf”) bankruptcy (Case No. 96-1563, United States Bankruptcy Court, District of Delaware (“Bankruptcy Court”)); as part of the Asset Purchase Agreement regarding our purchase of assets from Fruehauf, we did not assume liability for “Off-Site Environmental Liabilities,” which are defined to include any environmental claims arising out of the treatment, storage, disposal or other disposition of any Hazardous Substance at any location other than any of the acquired locations/assets; the Bankruptcy Court, in an Order dated May 26, 1999, also provided that, except for those certain specified liabilities assumed by Wabash under the terms of the Asset Purchase Agreement, we and our subsidiaries shall not be subject to claims asserting successor liability; and the “no successor liability” language of the Asset Purchase Agreement and the Bankruptcy Court Order form the basis for our request that we be removed from the list of PRPs for the MSP Site. The MSP Site PRP Group is currently considering our request, but has provided no timeline to us for a response. However, the MSP Site PRP Group has agreed to indefinitely extend the time period by which we must respond to the De Minimis Cash-Out Settlement offer. We do not expect that this proceeding will have a material adverse effect on our financial condition or results of operations.

In September 2003, we were noticed as a PRP by the EPA pertaining to the Motorola 52nd Street, Phoenix, Arizona Superfund Site (the “Superfund Site”) pursuant to the CERCLA. The EPA’s allegation that we were a PRP arises out of our acquisition of a former branch facility located approximately five miles from the original Superfund Site. We acquired this facility in 1997, operated the facility until 2000, and sold the facility to a third party in 2002. In June 2010, we were contacted by the Roosevelt Irrigation District (“RID”) informing itus that the Arizona Department of Environmental Quality (“ADEQ”) had approved a remediation plan in excess of $100 million for the RID portion of the Superfund Site, and demanded that we contribute to the cost of the plan or be named as a defendant in a CERCLA action to be filed in July 2010. Wabash initiated settlement discussions with the RID and the ADEQ in July 2010 to provide a full release from the RID, and a covenant not-to-sue and contribution protection regarding the former branch property from the ADEQ, in exchange for payment from us. If the settlement is approved by all parties, it will prevent any third party from successfully bringing claims against us for environmental contamination relating to this former branch property. We have been awaiting approval from the ADEQ since the settlement was first proposed in July 2010. In December 2015, we received tentative approval of our settlement offer from the ADEQ, and are now awaiting concurring approval from the RID. Based on communications with the RID and ADEQ in December 2014,2015, we do not expect to receive a response regarding the approval of the settlement from the ADEQRID for, at least, several additional months. Based upon our limited period of ownership of the former branch property, and the fact that it no longer owns the former branch property, we do not anticipate that the ADEQRID will reject the proposed settlement, but no assurance can be given at this time as to the ADEQ’sRID’s response to the settlement proposal.proposal tentatively approved by the ADEQ. The proposed settlement terms have been accrued and did not have a material adverse effect on our financial condition or results of operations, and we believe that any ongoing proceedings will not have a material adverse effect on our financial condition or results of operations.

In January 2006, we received a letter from the North Carolina Department of Environment and Natural Resources indicating that a site that we formerly owned near Charlotte, North Carolina has been included on the state's October 2005 Inactive Hazardous Waste Sites Priority List. The letter states that we were being notified in fulfillment of the state's “statutory duty” to notify those who own and those who at present are known to be responsible for each Site on the Priority List. Following receipt of this notice, no action has ever been requested from Wabash, and since 2006 we have not received any further communications regarding this matter from the state of North Carolina. We do not expect that this designation will have a material adverse effect on our financial condition or results of operations.

ITEM 4—MINE SAFETY DISCLOSURES

Not Applicable.

PART II

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

Information Regarding our Common Stock

Our common stock is traded on the New York Stock Exchange (ticker symbol: WNC). The number of record holders of our common stock at February 19, 201518, 2016 was 856.664.

We declared quarterly dividends of $0.045 per share on our common stock from the first quarter of 2005 through the third quarter of 2008. In December 2008, we suspended the payment of our quarterly dividend due to the continued weak economic environment and the uncertainty as to the timing of a recovery as well as our effort to enhance liquidity. No dividends on our common stock were declared or paid in 2014.2015. The reinstatement of quarterly cash dividends on our common stock will depend on our future earnings, capital availability, financial condition and the discretion of our Board of Directors.

Our Certificate of Incorporation, as amended and approved by our stockholders, authorizes 225 million shares of capital stock, consisting of 200 million shares of common stock, par value $0.01 per share, of 200 million shares and all classes of capital stock of 225 million shares, including 25 million shares of preferred stock, par value $0.01 per share.

High and low stock prices as reported on the New York Stock Exchange for the last two years were: