Koppers Holdings Inc. - Annual Report: 2014 (Form 10-K)

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2014

Commission file number 1-32737

KOPPERS HOLDINGS INC.

(Exact name of registrant as specified in its charter)

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

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

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

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

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

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

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

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

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

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

The aggregate market value of Common Stock held by non-affiliates of the registrant, based on the closing sales price of the Common Stock on the New York Stock Exchange on June 30, 2014 was $765.3 million (affiliates, for this purpose, have been deemed to be Directors and executive officers of Koppers Holdings Inc.).

As of January 31, 2015, 20,495,011 shares of Common Stock of the registrant were issued and outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s Proxy Statement for the 2015 Annual Meeting of Shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K.

3

Table of Contents

TABLE OF CONTENTS

4

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

FORWARD-LOOKING INFORMATION

This report and the documents incorporated herein by reference contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 and may include, but are not limited to, statements about sales levels, restructuring, profitability and anticipated expenses and cash outflows. All forward-looking statements involve risks and uncertainties. All statements contained herein that are not clearly historical in nature are forward-looking, and words such as “believe”, “anticipate”, “expect”, “estimate”, “may”, “will”, “should”, “continue”, “plans”, “intends”, “likely” or other similar words or phrases are generally intended to identify forward-looking statements. Any forward-looking statement contained herein, in press releases, written statements or other documents filed with the SEC, or in our communications with and discussions with investors and analysts in the normal course of business through meetings, phone calls and conference calls are subject to known and unknown risks, uncertainties and contingencies. Many of these risks, uncertainties and contingencies are beyond our control, and may cause actual results, performance or achievements to differ materially from anticipated results, performance or achievements. Factors that might affect such forward-looking statements include, among other things:

We caution you that the foregoing list of important factors may not contain all of the material factors that are important to you. In addition, in light of these risks and uncertainties, the matters referred to in the forward looking statements contained in this report and the documents incorporated by reference herein may not in fact occur. We undertake no obligation to publicly update or revise any forward looking statement as a result of new information, future events or otherwise, except as otherwise required by law.

5

Table of Contents

PART I

ITEM 1. BUSINESS

General

In this report, unless otherwise noted or the context otherwise requires, (i) the term “Koppers”, “Koppers Holdings”, the “Company”, “we” or “us” refers to Koppers Holdings Inc. and its consolidated subsidiaries, (ii) the term “KH” refers to Koppers Holdings Inc. and not any of its subsidiaries and (iii) the term “KI” refers to Koppers Inc. and not any of its subsidiaries. Koppers Inc. is a wholly-owned subsidiary of Koppers Holdings Inc. Koppers Holdings Inc. has substantially no operations independent of Koppers Inc. and its subsidiaries. The use of these terms is not intended to imply that Koppers Holdings and Koppers Inc. are not separate and distinct legal entities from each other and from their respective subsidiaries.

Koppers Holdings Inc. was incorporated in November 2004 as a holding company for Koppers Inc. We are a leading integrated global provider of carbon compounds, chemicals and treated wood products and services. Our products and services are used in a variety of niche applications in a diverse range of end-markets, including the aluminum, railroad, specialty chemical, utility, rubber, concrete, steel, residential lumber and agriculture industries. We serve our customers through a comprehensive global manufacturing and distribution network, with manufacturing facilities located in North America, South America, Australasia, China and Europe.

Acquisitions

Koppers Ashcroft—On January 20, 2014, we acquired the crosstie treating business and related manufacturing facility of Tolko Industries Ltd. located in Ashcroft, British Columbia, Canada. The purchase price was $29.8 million and was funded primarily by available cash. This business is now part of our Railroad and Utility Products and Services (“RUPS”) segment.

Osmose—On August 15, 2014, KI completed the acquisition of the wood preservation and the railroad services businesses (the “Osmose Entities”) of Osmose Holdings, Inc. The aggregate cash purchase price for the Osmose Entities was $494.1 million. Revenues for the Osmose Entities in 2013 were approximately $390 million.

The majority of the wood preservation business is now known as Koppers Performance Chemicals. We believe that Koppers Performance Chemicals is the global leader in developing, manufacturing and marketing wood preservation chemicals and wood treatment technologies. The business has operations and sales in North America, South America, Europe, and Australasia, and accounted for approximately $350 million of the revenue for the Osmose Entities in 2013. This business serves a diverse range of end-markets including infrastructure, residential and commercial construction, and agriculture. The wood preservation business includes approximately $16 million of revenue related to a wood treating facility located in Houston, Texas that is now part of our RUPS segment.

The railroad services business is now known as Koppers Railroad Structures. We believe that Koppers Railroad Structures is a leading provider of railroad infrastructure services, including bridge inspection, engineering, maintenance and repair, and construction services for the Class I and shortline railroads in North America. The business accounted for approximately $40 million of the revenue for the Osmose Entities in 2013 and is now a part of our RUPS segment.

Business Segments and Products

We operate three principal business segments: Carbon Materials and Chemicals, Railroad and Utility Products and Services, and Performance Chemicals.

Our operations are, to a substantial extent, vertically integrated. Through our Carbon Materials and Chemicals business, we process coal tar into a variety of products, including carbon pitch, creosote, carbon black feedstock, naphthalene and phthalic anhydride, which are intermediate materials necessary in the production of aluminum, the pressure treatment of wood, the production of carbon black for the rubber industry, the production of high-strength concrete, and the production of plasticizers and specialty chemicals, respectively. The majority of the creosote we produce in North America is sold internally to our Railroad and Utility Products and Services business for treating railroad crossties. We believe our three business segments command leading market positions. Through our Carbon Materials and Chemicals business, we believe we are the largest global supplier of carbon pitch to the aluminum industry. Through our Railroad and Utility Products and Services business, we believe that we are the largest supplier of railroad crossties to the North American railroads. Through our Performance Chemicals business, we

6

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

believe that we are the global leader in developing, manufacturing and marketing wood preservation chemicals and wood treatment technologies for use in pressure treating lumber for residential, industrial and agricultural applications.

Carbon Materials and Chemicals

Carbon pitch, naphthalene, and creosote are produced through the distillation of coal tar, a by-product generated through the processing of coal into coke for use in steel and iron manufacturing. Coal tar distillation involves the conversion of coal tar into a variety of intermediate chemical products in processes beginning with distillation. During the distillation process, heat and vacuum are utilized to separate coal tar into three primary components: carbon pitch (approximately 50 percent), chemical oils (approximately 20 percent) and creosote (approximately 30 percent). The diagram below shows the streams derived from coal tar distillation:

Our Carbon Materials and Chemicals business (“CMC”) manufactures the following principal products:

Carbon Pitch

Carbon pitch is a critical raw material used in the production of aluminum and for the production of steel in electric arc furnaces. Approximately one ton of carbon pitch is required for every 10 tons of aluminum produced and there are currently no known viable substitutes for carbon pitch in the aluminum production process. Over 90 percent of our carbon pitch is sold to the aluminum industry, typically under long-term contracts ranging from three to five years. Many of these long-term contracts have provisions for periodic pricing reviews. We have been a leading supplier of carbon pitch to the aluminum industry for over 20 years, and we believe we are the largest producer of carbon pitch for the aluminum industry. Competitive factors in the carbon pitch market include price, quality, service and security of supply. We believe we have a competitive advantage based on our global presence and long-term raw material supply contracts.

In the United States, these supply contracts generally have terms ranging from two to 25 years, and most provide options for renewal. Pricing under these contracts is generally either formula-based, with adjustments on an annual or semi-annual basis, or fixed for the duration of the contract. Our primary European supply contracts either have a remaining term of approximately five years or have a remaining term of five years and thereafter extend indefinitely unless terminated by one year advance notice. These contracts contain formula-based pricing, which is reviewed or adjusted on a monthly, quarterly or annual basis. Our primary Australian supply contracts have terms ranging from five to ten years and contain formula-based pricing which is adjusted on an annual or semi-annual basis. Finally, in China, we have raw material contracts in place with each of our

7

Table of Contents

respective joint venture partners. These contracts are coterminous with the applicable joint venture arrangement and provide for formula-based pricing adjusted on a monthly or quarterly basis.

Naphthalene and Phthalic Anhydride

Chemical oils are further processed to produce naphthalene, which we sell into the industrial sulfonate market for use as dispersants or in the concrete additive and gypsum board markets. Additional end-uses include oil field additives, agricultural emulsifiers, synthetic tanning agents and dyestuffs. In the United States, we also use naphthalene as a feedstock in the manufacture of phthalic anhydride. The primary markets for phthalic anhydride are in the production of plasticizers, unsaturated polyester resins and alkyd resins. We believe our ability to utilize our internally produced naphthalene gives us a more stable supply and generally lower-cost feedstock for the production of phthalic anhydride compared to our competitors.

Creosote and Carbon Black Feedstock

In the United States and Canada, creosote is used as a commercial wood treatment chemical to preserve railroad crossties and lumber, utility poles and piling. The majority of our domestically produced creosote is sold to our Railroad and Utility Products and Services business. In Australia, China and Europe, creosote is sold primarily into the carbon black market for use as a feedstock in the production of carbon black. In Europe and China creosote is also sold to wood treaters. Our wood treating plants in North America purchase substantially all of their creosote from our tar distillation plants. We believe we are the only major competitor in this market that is integrated in this fashion. The remainder of our creosote is sold to railroads and other wood treaters.

Other Products

Other products include the sale of refined tars, benzole and specialty chemicals.

Our CMC business manufactures its primary products and sells them directly to our global customer base under long-term contracts or through purchase orders negotiated by our regional sales personnel and coordinated through our global marketing group in the United States. We believe we have a strategic advantage over our competitors based on our ability to access coal tar from many global suppliers. Our nine coal tar distillation facilities including joint ventures and five carbon materials terminals give us the ability to offer customers multiple sourcing and a consistent supply of high quality products.

Railroad and Utility Products and Services

Our Railroad and Utility Products and Services business (“RUPS”) sells treated and untreated wood products, rail joint bars and services primarily to the railroad markets in the United States and Canada and the utility market in Australia. We also produce concrete crossties, a complementary product to our wood treatment business, through a joint venture in the United States. We also operate a railroad services business that conducts engineering, design, repair and inspection services for railroad bridges, serving the same customer base as our railroad crossties business.

Railroad products and services include procuring and treating items such as crossties, switch ties and various types of lumber used for railroad bridges and crossings. Railroad products also include manufacturing and selling rail joint bars, which are steel bars used to join rails together for railroads. Utility products include transmission and distribution poles for electric and telephone utilities. The RUPS business operates 14 wood treating plants and one rail joint bar manufacturing facility located throughout the United States, Canada and Australia. Our network of plants is strategically located near timber supplies to enable us to access raw materials and service customers effectively. In addition, our crosstie treating plants are typically adjacent to our railroad customers’ track lines.

Our RUPS business manufactures its primary products and sells them directly to our customers through long-term contracts and purchase orders negotiated by our regional sales personnel and coordinated through our marketing group at corporate headquarters.

Hardwoods, such as oak and other species, are the major raw materials in wood crossties. Hardwood prices, which account for more than 50 percent of a finished crosstie’s cost, fluctuate with the demand from other hardwood lumber markets, such as oak flooring, pallets and other specialty lumber products. For example, we have been impacted in our ability to acquire hardwood due to the demand for crane mats associated with the oil and gas industry. Weather conditions can be a factor in the supply of raw material, as unusually wet or inclement conditions may make it difficult to harvest timber.

8

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

In the United States, hardwood lumber is procured by us from hundreds of small sawmills throughout the northeastern, midwestern and southern areas of the country. The crossties are shipped via rail car or trucked directly to one of our crosstie treating plants, all of which are on line with a major railroad. The crossties are either air-stacked for a period of six to nine months or artificially dried by a process called boultonizing. Once dried, the crossties are pressure treated with creosote, a product of our CMC business. A substantial portion of our crossties are treated with borate, which is purchased from outside suppliers, in combination with creosote.

We believe we are the largest supplier of railroad crossties in North America. We have one principal competitor, Stella-Jones Inc., and several smaller regional competitors in the North American market. Competitive factors in the railroad crosstie market include price, quality, location, service and security of supply. We believe we have a competitive advantage due to our national network of treating plants and direct access to our major customers’ rail lines, which provide for security of supply and logistics advantages for our customers. We believe our Australian utility pole business is the largest producer of utility poles for the electrical communications utilities in Australia.

Our RUPS business’ largest customer base is the North American Class I railroad market, which buys approximately 74 percent of all crossties produced in the United States and Canada. We also have relationships with many of the approximately 550 short-line and regional rail lines. This also forms the customer base for our rail joint bar products. The railroad crosstie market is a mature market with approximately 24 million replacement crossties (both wood and non-wood) purchased during 2014. We currently supply all seven of the North American Class I railroads and have contracts with all of them.

Demand for railroad crossties may decline during winter months due to inclement weather conditions which make it difficult to install railroad crossties. As a result, operating results may vary from quarter to quarter depending on the severity of weather conditions and other variables affecting our products.

Utility poles are produced mainly from hardwoods of the eucalyptus species in Australia. Most of these poles are purchased from large timber owners and individual landowners and shipped to one of our pole-peeling facilities. In Australia, in addition to utility poles, we market smaller poles to the agricultural landscape and vineyard markets. We treat poles with a variety of preservatives, including pentachlorophenol and copper chrome arsenates.

Performance Chemicals

Our Performance Chemicals business (“PC”) sells preservatives for residential and agricultural treated lumber that includes decking and fencing. This business supplies nine of the ten largest lumber treating companies in the U.S. and three of the four largest lumber treating companies in Canada. The primary products for this business are copper-based wood preservatives including micronized copper quaternary and micronized copper azole (“MicroPro”), alkaline copper quaternary, and chromated copper arsenate.

The products produced and sold by our PC business are sold primarily to wood treaters that use our products to produce treated lumber for decking, fencing, vineyards and various other applications. We have a research and development center located in Griffin, Georgia, with smaller research and development facilities located in the United Kingdom and New Zealand. Our PC business has been awarded patents on many of its products including MicroPro, which currently enjoys the leading market share in the North American residential treated lumber market.

We believe we are the largest global producer of wood preservation chemicals for use in treating lumber. Our PC business has operations in the United States, Europe, Canada, Australia and New Zealand. Additionally, there are sales offices in several countries including Brazil and Chile, which we believe will facilitate our ability to grow our railroad crosstie business in Latin America. Our key competitors in wood preservation chemicals include Lonza Wood Protection and Viance Treated Wood Solutions.

Equity Investments

KSA Limited Partnership, located in Portsmouth, Ohio, produces concrete crossties, a complementary product to our wood treatment crosstie business. We own 50 percent of KSA, with the other 50 percent owned by subsidiaries of Heidelberg Cement AG. KSA Limited Partnership also provides concrete turnouts for rail traffic switching and used crosstie rehabilitation.

Tangshan Koppers Kailuan Carbon Chemical Company (“TKK”) is a coal tar distillation facility located in China in the Hebei Province near the Jingtang Port. We hold a 30 percent investment in TKK.

9

Table of Contents

Research and Development

Research activities related to our Carbon Materials and Chemicals business are directed toward new product development regarding alternate uses for coal tar and technical service efforts to promote the use of creosote and vacuum-distilled carbon pitch.

Research activities related to Performance Chemicals are conducted in Griffin, Georgia, Marlow, United Kingdom and Auckland, New Zealand. Intellectual property relating to our wood preservative business is very important to us. In particular, our patent portfolio relating to wood preservative compositions, and wood treatments, including methods of treating wood with wood preservative compositions comprising micronized-metal particles, is a source of competitive advantage for this business. The earliest expiration date for patents relating to micronized wood preservative compositions is April 9, 2024.

Expenditures for research and development were $3.1 million, $2.4 million and $2.3 million, for the years ended December 31, 2014, 2013 and 2012, respectively.

Technology and Licensing

In 1988, we acquired the “Koppers” trademark from Koppers Company, Inc. The association of the name with the chemical, building, wood preservation and coke industries is beneficial to our company, as it represents long-standing, high quality products. Trademarks relating to our wood preservation business, such as “MicroPro”, “Protim” and “Solignum” are important in this segment of our business, and as long as we continue to use the name “Koppers” and the trademarks associated with our wood preservation business and comply with applicable registration requirements, our right to use the name “Koppers” and the other trademarks should continue without expiration. The expiration of other trademark rights is not expected to materially affect our business.

Backlog

Generally, Koppers does not manufacture its products against a backlog of orders. Inventory and production levels are typically driven by expectations of future demand based on contractual obligations.

Seasonality

Demand for certain products may decline during winter months due to weather conditions. As a result, operating results may vary from quarter to quarter depending on the severity of weather conditions and other variables affecting our products.

Segment Information

Please see Note 9, “Segment Information,” under Item 8 of this Form 10-K for financial information relating to business segments and geographic areas. See also “Item 1A. Risk Factors – Risks Related to Our Business – Demand for our products is cyclical and we may experience prolonged depressed market conditions for our products.”

Non-U.S. Operations

Koppers has a significant investment in non-U.S. operations. Therefore, we are subject to certain risks that are inherent to foreign operations, including complying with applicable laws relating to foreign practices, the laws of foreign countries in which we operate, political and economic conditions in international markets and fluctuations in foreign exchange rates.

Environmental Matters

Our operations and properties are subject to extensive federal, state, local and foreign environmental laws and regulations relating to protection of the environment and human health and safety, including those concerning the treatment, storage and disposal of wastes, the investigation and remediation of contaminated soil and groundwater, the discharge of effluents into waterways, the emission of substances into the air, as well as various health and safety matters. Environmental laws and regulations are subject to frequent amendment and have historically become more stringent over time. We have incurred and

10

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

could incur in the future significant costs as the result of our failure to comply with, and liabilities under, environmental laws and regulations, including cleanup costs, civil and criminal penalties, injunctive relief and denial or loss of, or imposition of significant restrictions on, environmental permits. In addition, we have been and could in the future be subject to suit by private parties in connection with alleged violations of, or liabilities under, environmental laws and regulations. See “Item 1A. Risk Factors – Risks Related to Our Business – We are subject to extensive environmental laws and regulations and may incur significant costs as a result of continued compliance with, violations of or liabilities under environmental laws and regulations” and Note 20 of the Notes to Consolidated Financial Statements, “Commitments and Contingent Liabilities.”

Employees and Employee Relations

As of December 31, 2014, we had 773 salaried employees and 1,369 non-salaried employees. Listed below is a breakdown of employees by our businesses, including administration.

Internet Access

Our Internet address is www.koppers.com. Our recent filings on Form 10-K, 10-Q and 8-K and any amendments to those documents can be accessed without charge on our website under Investor Relations – SEC Filings. The contents of our internet site are not incorporated by reference into this document.

ITEM 1A. RISK FACTORS

You should carefully consider the risks described below before investing in our publicly traded securities. Our business is subject to the risks that affect many other companies, such as competition, technological obsolescence, labor relations, general economic conditions, geopolitical events and international operations.

Risks Related to Our Business

Fluctuations in the price, quality and availability of our primary raw materials could reduce our profitability.

Our operations depend on an adequate supply of quality raw materials being available on a timely basis. The loss of a key source of supply or a delay in shipments could cause a significant increase in our operating expenses. For example, our operations are highly dependent on a relatively small number of freight transportation services. We are also dependent on specialized ocean-going transport vessels that we lease to deliver raw materials to our facilities and finished goods to our customers. Interruptions in such freight services could impair our ability to receive raw materials and ship finished products in a timely manner. We are also exposed to price and quality risks associated with raw material purchases. Such risks include the following:

11

Table of Contents

If the costs of raw materials increase significantly and we are unable to offset the increased costs with higher selling prices, our profitability will decline.

We face risks related to our substantial indebtedness.

Our substantial leverage could adversely affect our ability to raise additional capital to fund our operations, limit our ability to react to changes in the economy or our industry, expose us to interest rate risk associated with our variable rate debt and prevent us from meeting our obligations under our senior secured credit facilities, as described in Note 16 of the Notes to Consolidated Financial Statements, (the “Senior Secured Credit Facilities”). As of December 31, 2014, we have total outstanding debt of $850.5 million (of which $553.5 million is subject to variable interest rates and $297.0 million is subject to fixed interest rates), and an additional approximately $113.5 million of unused borrowing capacity under our revolving credit facility. Our high degree of leverage could have important consequences to us, including:

We and our subsidiaries may be able to incur substantial additional indebtedness in the future, subject to the restrictions contained in our Senior Secured Credit Facilities and the indentures governing the notes. If new indebtedness is added to our current debt levels, the related risks that we now face could intensify.

Our debt agreements contain restrictions that limit our flexibility in operating our business.

Our Senior Secured Credit Facilities and the indenture governing the Koppers Inc. 7 ⁷/₈% Senior Notes due 2019 (the “Senior Notes”) notes contain various covenants that limit our ability to engage in specified types of transactions. These covenants limit our ability and the ability of our restricted subsidiaries to, among other things:

12

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

In addition, under the Senior Secured Credit Facilities, we are required to meet specified financial ratios in order to undertake certain actions, and we are required to maintain a specified minimum fixed charge coverage ratio and a maximum total secured leverage ratio. Our ability to meet those tests can be affected by events beyond our control, and we cannot assure you that we will meet them. A breach of any of these covenants could result in a default under our Senior Secured Credit Facilities. Upon the occurrence of an event of default under our Senior Secured Credit Facilities, the lenders could elect to declare all amounts outstanding under our Senior Secured Credit Facilities to be immediately due and payable and terminate all commitments to extend further credit. If we were unable to repay those amounts, the lenders under our Senior Secured Credit Facilities could proceed against the collateral granted to them to secure such indebtedness. We have pledged substantially all of our assets as collateral under our Senior Secured Credit Facilities. If the lenders under our Senior Secured Credit Facilities accelerate the repayment of borrowings, we cannot assure you that we will have sufficient assets to repay our Senior Secured Credit Facilities, as well as our unsecured indebtedness.

Conditions in the global economy and global capital markets may adversely affect our results of operations, financial condition and cash flows.

The U.S. and global economy and capital markets have experienced significant uncertainties and volatility in the past few years. Our business and operating results for the last five years were significantly affected by these global economic issues. Many of our customers have experienced deterioration of their business during the latest business cycle. They may experience cash flow shortages and may have difficulty obtaining financing. As a result, our customers may delay or cancel plans to purchase our products and may not be able to fulfill their payment obligations to us in a timely fashion. Our suppliers may be experiencing similar conditions which could impact their ability to supply us with raw materials and otherwise fulfill their obligations to us. If global economic conditions deteriorate significantly, there could be a material adverse effect to our results of operations, financial condition and cash flows.

In addition, we rely on our $792.5 million Senior Secured Credit Facilities with a consortium of banks to provide us with liquidity to meet our working capital needs. At December 31, 2014, we had $113.5 million of available borrowing capacity under this arrangement. Our ability to fund our liquidity needs and working capital requirements could be impacted in the event that disruptions in the credit markets result in the banks being unable to lend to us under our credit agreement.

Global economic issues could prevent us from accurately forecasting demand for our products, which could have a material effect on our results of operations and our financial condition.

Adverse global economic issues, market instability and volatile commodity price fluctuations make it increasingly difficult for us, our customers and our suppliers to accurately forecast future product demands and sales prices, which could cause us to procure raw materials in excess of end-product demand. This could cause a material increase to our inventory carrying costs and, in the event of falling market prices for our end products, result in significant charges to write-down inventory to market prices.

Intellectual property rights are important to our business. If our patents are declared invalid or our trade secrets become known to our competitors, our ability to compete may be adversely affected.

Proprietary protection of our processes, apparatuses and other technology is important to our business, particularly in our Performance Chemicals business. Consequently, we may have to rely on judicial enforcement of our patents and other proprietary rights, which is generally a time consuming and expensive process. While a presumption of validity exists with respect to patents issued to us in the U.S., there can be no assurance that any of our patents will not be challenged, invalidated, circumvented or rendered unenforceable. Furthermore, if any pending patent application filed by us does not result in an issued patent, or if patents are issued to us, but such patents do not provide meaningful protection of our intellectual property, or if

13

Table of Contents

patents issued to us expire, then our ability to compete may be adversely affected. Additionally, our competitors or other third parties may obtain patents that restrict or preclude our ability to lawfully produce or sell our products in a competitive manner, which could have a material adverse effect on our business, cash flow and financial condition. The growth of our business also depends on our ability to develop new intellectual property rights, including patents, and the successful implementation of innovation initiatives. There can be no assurance that our efforts to do so will be successful and the failure to do so could negatively impact our results of operations.

We also rely upon unpatented proprietary know-how and continuing technological innovation and other trade secrets to develop and maintain our competitive position, particularly in our Performance Chemicals business. While it is our policy to enter into confidentiality agreements with our employees and third parties to protect our intellectual property, these confidentiality agreements may be breached or may not provide meaningful protection for our trade secrets or proprietary know-how, and adequate remedies may not be available in the event of an unauthorized use or disclosure of our trade secrets and know-how. In addition, others could obtain knowledge of our trade secrets through independent development or other access by legal means. The failure of our patents or confidentiality agreements to protect our processes, apparatuses, technology, trade secrets or proprietary know-how could have a material adverse effect on our business, cash flow and financial condition.

We may be required to recognize impairment charges for our long-lived assets.

At December 31, 2014, the net carrying value of long-lived assets (property, plant and equipment, goodwill, other intangible assets and equity investments) totaled approximately $719.6 million. In accordance with generally accepted accounting principles, we periodically assess these assets to determine if they are impaired. In 2014, we recognized impairment charges of $4.7 million for a coal tar distillation plant located in China. In 2013, we recognized impairment charges of $11.9 million for three coal tar distillation plants located in the Netherlands, China and the United States. Significant negative industry or economic trends, disruptions to our business, unexpected significant changes or planned changes in use of the assets, divestitures and market capitalization declines may result in impairments to goodwill and other long-lived assets. Future impairment charges could significantly affect our results of operations in the periods recognized. Impairment charges would also reduce our shareholders’ equity and could affect compliance with the covenants in our debt agreements.

We may not be able to compete successfully in any or all of the industry segments in which we operate.

The markets in which we operate are highly competitive, and this competition could harm our business, results of operations, cash flow and financial condition. If we are unable to respond successfully to changing competitive conditions, the demand for our products could be affected. We believe that the most significant competitive factor for our products is selling price. Some of our competitors have greater financial resources and larger capitalization than we do and, as a result, they may be better positioned to compete in a declining market.

Demand for our products is cyclical and we may experience prolonged depressed market conditions for our products.

Our products are sold primarily into markets which historically have been cyclical, such as the aluminum, specialty chemical and wood preservation markets.

14

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

We are dependent on major customers for a significant portion of our net sales, and the loss of one or more of our major customers could result in a significant reduction in our profitability as a whole or the profitability of a particular product.

Although no one customer accounts for more than 10 percent of our net sales, for the year ended December 31, 2014, our top ten customers accounted for approximately 37 percent of our net sales. The loss of a significant customer could have a material adverse effect on our business, cash flow and financial condition.

Our products may be rendered obsolete or less attractive by changes in regulatory, legislative or industry requirements.

Changes in regulatory, legislative or industry requirements may render certain of our products obsolete or less attractive. Our ability to anticipate changes in these requirements, especially changes in regulatory standards, will be a significant factor in our ability to remain competitive. We may not be able to comply in the future with new regulatory, legislative and/or industrial standards that may be necessary for us to remain competitive and certain of our products may, as a result, become obsolete or less attractive to our customers.

The development of new technologies or changes in our customers’ products could reduce the demand for our products.

Our products are used for a variety of applications by our customers. Changes in our customers’ products or processes may enable our customers to reduce consumption of the products we produce or make our products unnecessary. Customers may also find alternative materials or processes that no longer require our products.

Hazards associated with chemical manufacturing may cause suspensions or interruptions of our operations.

Due to the nature of our business, we are exposed to the hazards associated with chemical manufacturing and the related use, storage and transportation of raw materials, products and wastes in our manufacturing facilities and our distribution centers, such as fires, explosions and accidents that could lead to a suspension or interruption of operations. Any disruption could reduce the productivity and profitability of a particular manufacturing facility or of our company as a whole. Other hazards include the following:

These hazards, among others, may cause personal injury and loss of life, damage to property and contamination of the environment, which could lead to government fines or work stoppage injunctions, cleanup costs and lawsuits by injured persons. While we are unable to predict the outcome of such matters, if determined adversely to us, we may not have adequate insurance to cover related costs or liabilities and, if not, we may not have sufficient cash flow to pay for such costs or liabilities. Such outcomes could harm our customer goodwill and reduce our profitability and could have a material adverse effect on our business, financial condition, cash flow and results from operations.

We are subject to extensive environmental laws and regulations and may incur significant costs as a result of continued compliance with, violations of or liabilities under environmental laws and regulations.

Like other companies involved in environmentally sensitive businesses, our operations and properties are subject to extensive federal, state, local and foreign environmental laws and regulations, including those concerning the following, among other things:

15

Table of Contents

We have incurred, and expect to continue to incur, significant costs to comply with environmental laws and regulations and as a result of remedial obligations. We could incur significant costs, including cleanup costs, fines, civil and criminal sanctions and claims by third parties for property damage and personal injury, as a result of violations of or liabilities under environmental laws and regulations. We accrue for environmental liabilities when a determination can be made that they are probable and reasonably estimable. Total environmental reserves at December 31, 2014 were $7.8 million, which include provisions primarily for environmental fines and remediation. In addition, we incur significant annual operating expenses related to environmental matters and significant capital expenditures related to environmental control facilities. Contamination has been identified and is being investigated and remediated at many of our sites by us or other parties. We believe that we will have continuing significant expenditures associated with compliance with environmental laws and regulations and, to the extent not covered by insurance or available recoveries under third-party indemnification arrangements, for present and future remediation efforts at plant sites and third-party waste sites and other liabilities associated with environmental matters. There can be no assurance that these expenditures will not exceed current estimates and will not have a material adverse effect on our business, financial condition, cash flow and results of operations.

Actual costs and liabilities to us may exceed forecasted amounts. Moreover, currently unknown environmental issues, such as the discovery of additional contamination or the imposition of additional sampling or cleanup obligations with respect to our sites or third party sites, may result in significant additional costs, and potentially significant expenditures could be required in order to comply with future changes to environmental laws and regulations or the interpretation or enforcement thereof. We also are involved in various litigation and proceedings relating to environmental matters and toxic tort claims.

Future climate change regulation could result in increased operating costs and reduced demand for our products.

Although the United States has not ratified the Kyoto Protocol, a number of federal laws related to “greenhouse gas,” or “GHG,” emissions have been considered by Congress. Additionally, various federal, state and regional regulations and initiatives have been enacted or are being considered.

Member States of the European Union each have an overall cap on emissions which are approved by the European Commission and implement the EU Emissions Trading Directive as a commitment to the Kyoto Protocol. Under this Directive, organizations apply to the Member State for an allowance of GHG emissions. These allowances are tradable so as to enable companies that manage to reduce their GHG emissions to sell their excess allowances to companies that are not reaching their emissions objectives. Failure to purchase sufficient allowances will require the purchase of allowances at a current market price.

Any laws or regulations that may be adopted to restrict or reduce emissions of GHGs could cause an increase to our raw material costs, could require us to incur increased operating costs and could have an adverse effect on demand for our products.

Beazer East and Beazer Limited may not continue to meet their obligations to indemnify us.

Under the terms of the asset purchase agreement between us and Koppers Company, Inc. (now known as Beazer East, Inc.) upon the formation of KI in 1988, subject to certain limitations, Beazer East and Beazer Limited assumed the liability for and indemnified us against, among other things, certain clean-up liabilities for contamination occurring prior to the purchase date at sites acquired from Beazer East and certain third-party claims arising from such contamination (the “Indemnity”). Beazer East and Beazer Limited (which are indirect subsidiaries of Heidelberg Cement AG) may not continue to meet their obligations. In addition, Beazer East could in the future choose to challenge its obligations under the Indemnity or our satisfaction of the conditions to indemnification imposed on us thereunder. The government and other third parties may have the right under applicable environmental laws to seek relief directly from us for any and all such costs and liabilities. In July 2004, we entered into an agreement with Beazer East to amend the December 29, 1988 asset purchase agreement to provide, among other

16

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

things, for the continued tender of pre-closing environmental liabilities to Beazer East under the Indemnity through July 2019. As consideration for the agreement, we, among other things, paid Beazer East $7.0 million and agreed to share toxic tort litigation defense costs arising from sites acquired from Beazer East. Qualified expenditures under the Indemnity are not subject to a monetary limit.

The Indemnity provides for the resolution of issues between KI and Beazer East by an arbitrator on an expedited basis upon the request of either party. The arbitrator could be asked, among other things, to make a determination regarding the allocation of environmental responsibilities between KI and Beazer East. Arbitration decisions under the Indemnity are final and binding on the parties. Periodically, issues have arisen between KI and Beazer East and/or other indemnitors that have been resolved without arbitration. From time to time, KI and Beazer East have engaged in discussions that involve, among other things, the allocation of environmental costs related to certain operating and closed facilities.

Without reimbursement under the Indemnity, the obligation to pay the costs and assume the liabilities relating to these matters would have a significant impact on our net income. Furthermore, without reimbursement, we could be required to record a contingent liability on our balance sheet with respect to environmental matters covered by the Indemnity, which could result in our having significant negative net worth. Finally, the Indemnity does not afford us indemnification against environmental costs and liabilities attributable to acts or omissions occurring after the closing of the acquisition of assets from Beazer East under the asset purchase agreement, nor is the Indemnity applicable to liabilities arising in connection with other acquisitions by us after that closing.

The insurance that we maintain may not fully cover all potential exposures.

We maintain property, casualty, general liability, workers’ compensation, pollution legal liability and other insurance, but such insurance may not cover all risks associated with the hazards of our business and is subject to limitations, including deductibles and maximum liabilities covered. We may incur losses beyond the limits, or outside the coverage, of our insurance policies, including liabilities for environmental compliance and remediation. In addition, from time to time, various types of insurance for companies in our industry have not been available on commercially acceptable terms or, in some cases, have not been available at all. In the future, we may not be able to obtain coverage at current levels, and our premiums may increase significantly on coverage that we maintain.

Adverse weather conditions may reduce our operating results.

Our quarterly operating results fluctuate due to a variety of factors that are outside our control, including inclement weather conditions, which in the past have caused a decline in our operating results. For example, adverse weather conditions have at times negatively impacted our supply chain as wet conditions impacted logging operations, reducing our ability to procure crossties. In addition, adverse weather conditions have had a negative impact on our customers in our pavement sealer and wood preservation businesses, resulting in a negative impact on our sales of these products. Moreover, demand for many of our products declines during periods of inclement weather.

We are subject to risks inherent in foreign operations, including additional legal regulation, changes in social, political and economic conditions.

We have operations in the United States, Australia, China, the United Kingdom, New Zealand, South America, Canada and Denmark, among others, and sell our products in many foreign countries. For the year ended December 31, 2014 on a pro forma basis, net sales from products sold by our foreign subsidiaries accounted for approximately 40 percent of our total net sales.

Doing business on a global basis requires us to comply with the laws and regulations of the U.S. government and various international jurisdictions. These regulations place restrictions on our operations, trade practices and partners and investment decisions. In particular, our international operations are subject to U.S. and foreign anti-corruption laws and regulations, such as the Foreign Corrupt Practices Act, and economic sanction programs administered by the U.S. Treasury Department’s Office of Foreign Assets Control. Violations of these laws and regulations may result in civil or criminal penalties, including fines.

In addition, as a global business, we are also exposed to market risks relating to fluctuations in interest rates and foreign currency exchange rates. Our international revenues could be reduced by currency fluctuations or devaluations. Changes in

17

Table of Contents

currency exchange rates could lower our reported revenues and could require us to reduce our prices to remain competitive in foreign markets, which could also reduce our profitability. We have not historically hedged our financial statement exposure and, as a result, we could incur unanticipated losses. We are also subject to potentially increasing transportation and shipping costs associated with international operations. Furthermore, we are also exposed to risks associated with changes in the laws and policies governing foreign investments in countries where we have operations as well as, to a lesser extent, changes in U.S. laws and regulations relating to foreign trade and investment.

Our strategy to selectively pursue complementary acquisitions may present unforeseen integration obstacles or costs.

Our business strategy includes the potential acquisition of businesses and entering into joint ventures and other business combinations that we expect would complement and expand our existing products and the markets where we sell our products. We may not be able to successfully identify suitable acquisition or joint venture opportunities or complete any particular acquisition, combination, joint venture or other transaction on acceptable terms. We cannot predict the timing and success of our efforts to acquire any particular business. Also, efforts to acquire other businesses or the implementation of other elements of this business strategy may divert managerial resources away from our business operations. In addition, our ability to engage in strategic acquisitions may depend on our ability to raise substantial capital and we may not be able to raise the funds necessary to implement our acquisition strategy on terms satisfactory to us, if at all. Our failure to identify suitable acquisition or joint venture opportunities may restrict our ability to grow our business. In addition, we may not be able to successfully integrate businesses that we acquire in the future or have recently acquired, which could lead to increased operating costs, a failure to realize anticipated operating synergies, or both.

Litigation against us could be costly and time-consuming to defend, and due to the nature of our business and products, we may be liable for damages arising out of our acts or omissions, which may have a material adverse effect on us.

We are a defendant in a significant number of lawsuits in which the plaintiffs claim they have suffered a variety of illnesses (including cancer) and/or property damage as a result of exposure to coal tar pitch, benzene, wood treatment chemicals and other chemicals. In addition, we are regularly subject to legal proceedings and claims that arise in the ordinary course of business, such as workers’ compensation claims, governmental investigations, employment disputes, and customer and supplier disputes arising out of the conduct of our business. We also are involved in various litigation and proceedings relating to environmental matters. Litigation could result in substantial costs and may divert management’s attention and resources away from the day-to-day operation of our business.

We are indemnified for certain product liability exposures under the Indemnity with Beazer East related to products sold prior to the closing of the acquisition of assets from Beazer East. Beazer East and Beazer Limited may not continue to meet their indemnification obligations. In addition, Beazer East could choose to challenge its indemnification obligations or our satisfaction of the conditions to indemnification imposed on us thereunder. If for any reason (including disputed coverage or financial incapability) one or more of such parties fail to perform their obligations and we are held liable for or otherwise required to pay all or part of such liabilities without reimbursement, the imposition of such liabilities on us could have a material adverse effect on our business, financial condition, cash flows and results of operations. Furthermore, we could be required to record a contingent liability on our balance sheet with respect to such matters, which could result in us having significant negative net worth.

Labor disputes could disrupt our operations and divert the attention of our management and may cause a decline in our production and a reduction in our profitability.

Many of our employees are represented by a number of different labor unions and are covered under numerous labor agreements. Every year, a number of labor agreements are scheduled to expire. We may not be able to reach new agreements without union action or on terms satisfactory to us. Any future labor disputes with any such unions could result in strikes or other labor protests, which could disrupt our operations and divert the attention of our management from operating our business. If we were to experience a strike or work stoppage, it may be difficult for us to find a sufficient number of employees with the necessary skills to replace these employees. Any such labor disputes could cause a decline in our production and a reduction in our profitability.

18

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

Our post-retirement obligations are currently underfunded. We may be required to make significant cash payments to our pension and other post-retirement plans, which will reduce the cash available for our business.

As of December 31, 2014, our benefit obligation under our defined benefit pension plans exceeded the fair value of plan assets by $46.2 million. Our pension asset funding to total pension obligation ratio was 83 percent as of December 31, 2014. The underfunding was caused, in large part, by fluctuations in the financial markets that have caused the value of the assets in our defined benefit pension plans to be significantly lower than anticipated and by fluctuations in interest rates which increased the discounted pension liabilities. In addition, our obligations for other post-retirement benefit obligations are unfunded and total $9.8 million at December 31, 2014.

During the years ended December 31, 2014 and December 31, 2013, we contributed $15.1 million and $22.5 million, respectively, to our post-retirement benefit plans. Management expects that any future obligations under our post-retirement benefit plans that are not currently funded will be funded from our future cash flow from operations. If our contributions to our post-retirement benefit plans are insufficient to fund the post-retirement benefit plans adequately to cover our future obligations, the performance of the assets in our pension plans does not meet our expectations or other actuarial assumptions or mandatory funding laws are modified, our contributions to our post-retirement benefit plans could be materially higher than we expect, thus reducing the cash available for our business.

We may incur significant charges in the event we close all or part of a manufacturing plant or facility.

We periodically assess our manufacturing operations in order to manufacture and distribute our products in the most efficient manner. Based on our assessments, we may make capital improvements to modernize certain units, move manufacturing or distribution capabilities from one plant or facility to another plant or facility, discontinue manufacturing or distributing certain products or close all or part of a manufacturing plant or facility, any of which could cause us to incur significant charges. The actual costs to close a manufacturing facility may exceed our original cost estimate and may have a material adverse effect on our financial condition, cash flow from operations and results from operations.

We depend on our senior management team and other key employees and the loss of these employees could adversely affect our business.

Our success is dependent on the management, experience and leadership skills of our senior management team and key employees. The loss of any of these individuals or an inability to attract, retain and maintain additional personnel with similar industry experience could prevent us from implementing our business strategy. We cannot assure you that we will be able to retain our existing senior management and key personnel or to attract additional qualified personnel when needed. Senior management or key personnel may retire from time to time, and our employment agreements with these individuals may expire from time to time.

We may be subject to information technology systems failures, network disruptions and breaches of data security.

We depend on integrated information systems to conduct our business. Information technology systems failures, including risks associated with upgrading our systems or in successfully integrating information technology and other systems in connection with the integration of businesses we acquire, network disruptions and breaches of data security could disrupt our operations by impeding our processing of transactions, our ability to protect customer or company information and our financial reporting. Our computer systems, including our back-up systems, could be damaged or interrupted by power outages, computer and telecommunications failures, computer viruses, internal or external security breaches, events such as fires, earthquakes, floods, tornadoes and hurricanes, and/or errors by our employees. Although we have taken steps to address these concerns, there can be no assurance that a system failure or data security breach will not have a material adverse effect on our financial condition and results of operations.

Risks Related to Our Common Stock

Our stock price may be extremely volatile.

There has been significant volatility in the market price and trading volume of equity securities, which is unrelated to the financial performance of the companies issuing the securities. These types of broad market fluctuations may negatively affect the market price of our common stock.

19

Table of Contents

Some specific factors that may have a significant effect on our common stock market price include the following:

We cannot predict the extent to which investor interest in our company will continue to support an active trading market for our common stock on the New York Stock Exchange (the “NYSE”) or otherwise or how liquid that market will continue to be. If there does not continue to be an active trading market for our common stock, you may have difficulty selling any of our common stock that you buy.

Future sales, or the perception of future sales, of a substantial amount of our common stock may depress the price of the shares of our common stock.

Future sales, or the perception or the availability for sale in the public market, of substantial amounts of our common stock could adversely affect the prevailing market price of our common stock and could impair our ability to raise capital through future sales of equity securities at a time and price that we deem appropriate.

We may issue shares of our common stock, or other securities, from time to time as consideration for future acquisitions and investments. We may also issue shares of our common stock, or other securities, in connection with employee stock compensation programs and board of directors’ compensation. In addition, we may issue shares of our common stock or other securities in public or private offerings as part of our efforts to raise additional capital. In the event any such acquisition, investment, issuance under stock compensation programs or offering is significant, the number of shares of our common stock or the number or aggregate principal amount, as the case may be, of other securities that we may issue may in turn be significant. We may also grant registration rights covering those shares or other securities in connection with any such acquisitions and investments. Any additional capital raised through the sale of our equity securities may dilute your percentage ownership in us.

We have suspended our dividend and do not expect to pay any dividends for the forseeable future.

We are not required to pay dividends, and our shareholders are not guaranteed, and do not have contractual rights, to receive dividends. Our board of directors may decide at any time, in its discretion, to decrease the amount of dividends, otherwise change or revoke the dividend policy or discontinue entirely the payment of dividends. In February 2015 our board of directors determined to suspend our dividend in order to pay down debt and until the Carbon Materials and Chemicals business stabilizes. Accordingly, we do not anticipate that we will pay any dividends on shares of our common stock for the foreseeable future. Any determination to pay dividends in the future will be at the discretion of our Board of Directors and will depend upon results of operations, financial condition, contractual restrictions, restrictions imposed by applicable law and other factors our Board of Directors deems relevant.

The ability of Koppers Inc. and its subsidiaries to pay dividends or make other payments or distributions to us will depend on our operating results and may be restricted by, among other things, the covenants in Koppers Inc.’s revolving credit facility. Our ability to pay dividends is also limited by the indentures governing the Senior Notes as well as Pennsylvania law and may in the future be limited by the covenants of any future outstanding indebtedness we or our subsidiaries incur. If a dividend is paid in violation of Pennsylvania law, each director approving the dividend could be liable to the corporation if the director did not act

20

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

with such care as a person of ordinary prudence would use under similar circumstances. Directors are entitled to rely in good faith on information provided by employees of the corporation and experts retained by the corporation. Directors who are held liable would be entitled to contribution from any shareholders who received an unlawful dividend knowing it to be unlawful. Furthermore, we are a holding company with no operations, and unless we receive dividends, distributions, advances, transfers of funds or other payments from our subsidiaries, we will be unable to pay dividends on our common stock.

Provisions of our charter documents may inhibit a takeover, which could negatively affect our stock price.

Provisions of our charter documents and the Business Corporation Law of Pennsylvania, the state in which we are incorporated, could discourage potential acquisition proposals or make it more difficult for a third party to acquire control of our company, even if doing so might be beneficial to our shareholders. Our Amended and Restated Articles of Incorporation (our “Articles of Incorporation”) and our Amended and Restated Bylaws (our “Bylaws”) provide for various procedural and other requirements that could make it more difficult for shareholders to effect certain corporate actions. For example, our Articles of Incorporation authorize our board of directors to determine the rights, preferences, privileges and restrictions of unissued series of preferred stock without any vote or action by our shareholders. Our board of directors can therefore authorize and issue shares of preferred stock with voting or conversion rights that could adversely affect the voting or other rights of holders of our common stock. The following additional provisions could make it more difficult for shareholders to effect certain corporate actions:

These provisions may discourage acquisition proposals and may make it more difficult or expensive for a third party to acquire a majority of our outstanding voting stock or may delay, prevent or deter a merger, acquisition, tender offer or proxy contest, which may negatively affect our stock price.

Risks Related to the Senior Notes and Other Indebtedness

We may not be able to generate sufficient cash to service all of our indebtedness, including the Senior Notes, and may be forced to take other actions to satisfy our obligations under our indebtedness, which may not be successful.

Our ability to make scheduled payments on or to refinance our debt obligations depends on our financial condition and operating performance, which are subject to prevailing economic and competitive conditions and to certain financial, business and other factors beyond our control. We cannot assure you that we will maintain a level of cash flows from operating activities sufficient to permit us to pay the principal, premium, if any, and interest on our indebtedness, including the Senior Notes.

If our cash flows and capital resources are insufficient to fund our debt service obligations, we may be forced to reduce or delay investments and capital expenditures, or to sell assets, seek additional capital or restructure or refinance our indebtedness, including the Senior Notes. These alternative measures may not be successful and may not permit us to meet our scheduled debt service obligations. In the absence of such operating results and resources, we could face substantial liquidity problems and might be required to dispose of material assets or operations to meet our debt service and other obligations. Our Senior Secured Credit Facilities, and the indenture governing the Senior Notes restrict our ability to dispose of assets and use the proceeds from the disposition. We may not be able to consummate those dispositions or to obtain the proceeds that we could realize from them and these proceeds may not be adequate to meet any debt service obligations then due.

21

Table of Contents

The covenants in Koppers Inc.’s revolving credit facility impose restrictions that may limit our ability to take certain actions. Our failure to comply with these covenants could result in the acceleration of our outstanding indebtedness.

Koppers Inc.’s revolving credit facility contains minimum fixed charge coverage and maximum leverage ratios. Additionally, the facility includes covenants limiting liens, mergers, asset sales, dividends and the incurrence of debt. Our ability to borrow under Koppers Inc.’s revolving credit facility will depend upon satisfaction of these covenants. Events beyond our control can affect our ability to meet those covenants.

If we are unable to meet the terms of our financial covenants, or if we break any of these covenants, a default could occur. A default, if not waived, would entitle our lenders to declare all amounts borrowed under it immediately due and payable, which could also cause the acceleration of obligations under certain other agreements. In the event of acceleration of our outstanding indebtedness, there can be no assurance that we would be able to repay our debt or obtain new financing to refinance our debt. Even if new financing is made available to us, it may not be on terms acceptable to us.

The Senior Notes are secured equally and ratably with our current and future secured indebtedness.

The Senior Notes are secured equally and ratably with all of our current secured indebtedness and any future secured indebtedness that we may incur to the extent of the assets securing such indebtedness. At December 31, 2014, we have a $500.0 million secured revolving credit facility and a term loan of $292.5 million. The revolving credit agreement and indenture governing the Senior Notes permit us to incur a substantial amount of additional indebtedness.

In the event of our insolvency, bankruptcy, liquidation, reorganization, dissolution or winding up, we may not have sufficient assets to pay amounts due on any or all of the Senior Notes then outstanding. Holders of the Senior Notes will participate ratably with the other secured indebtedness that are deemed to be of the same class as the Senior Notes, and potentially with all of our other general creditors, based upon the respective amounts owed to each holder or creditor, in our remaining assets. In any of the foregoing events, we cannot assure holders of our Senior Notes that there will be sufficient assets to pay amounts due on the Senior Notes.

We may not have the ability to raise the funds necessary to finance the change of control offer required by the indenture or may be prohibited from making a repurchase offer required by the indenture.

Upon the occurrence of certain specific kinds of change of control events, we will be required to offer to repurchase all outstanding Senior Notes at 101 percent of the principal amount thereof plus accrued and unpaid interest, if any, to the date of repurchase. The source of funds for that purchase of Senior Notes will be available cash or cash generated from Koppers Inc. or its subsidiaries operations or other potential sources, including borrowings, sales of assets or equity financing. It is possible that we will not have sufficient funds at the time of the change of control to make the required repurchase of Senior Notes or that restrictions in our other indebtedness will not allow such repurchases. In addition, certain important corporate events, such as leveraged recapitalizations that would increase the level of our indebtedness, would not constitute a change of control under the Senior Notes indenture.

Holders of Senior Notes may not be able to determine when a change of control giving rise to their right to have the Senior Notes repurchased by us has occurred following a sale of “substantially all” of our assets.

A change of control, as defined in the indenture governing the Senior Notes, requires us to make an offer to repurchase all outstanding Senior Notes. The definition of change of control includes a phrase relating to the sale, lease or transfer of “all or substantially all” of our assets. There is no precise established definition of the phrase “substantially all” under applicable law. Accordingly, the ability of a holder of Senior Notes to require us to repurchase its Senior Notes as a result of a sale, lease or transfer of less than all of our assets to another individual, group or entity may be uncertain.

The claims of holders of Senior Notes will be structurally subordinated to claims of creditors of any of Koppers Inc.’s subsidiaries that do not guarantee the notes.

Only Koppers Holdings and the wholly-owned domestic restricted subsidiaries of Koppers Inc. guarantee the Senior Notes. The Senior Notes are not guaranteed by any of our non-U.S. subsidiaries. Subject to certain limitations, the indenture governing the Senior Notes permits the non-guarantor subsidiaries to acquire additional assets and incur additional indebtedness. Holders of Senior Notes would not have any claim as a creditor against any of the non-guarantor subsidiaries to the assets and earnings of those subsidiaries. The claims of the creditors of those subsidiaries, including their trade creditors, banks and other lenders, will

22

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

have priority over any of Koppers Inc.’s claims or those of Koppers Inc.’s other subsidiaries as equity holders of the non-guarantor subsidiaries. Consequently, in any insolvency, liquidation, reorganization, dissolution or other winding-up of any of the non-guarantor subsidiaries, creditors of those subsidiaries would be paid before any amounts would be distributed to Koppers Inc. or to any of the other guarantors as equity and thus be available to satisfy the obligations under the Senior Notes and the guarantees. Accordingly, there can be no assurance that any of the assets of the non-guarantor subsidiaries will be available to satisfy the obligations under the Senior Notes and the guarantees. In addition, Koppers Holdings has substantially no operations independent of Koppers Inc. and its subsidiaries, and there can be no assurance that Koppers Holdings will have any assets available to satisfy the obligations under its guarantee. As of December 31, 2014, the non-guarantor subsidiaries had approximately $197 million of liabilities (including trade payables but excluding intercompany indebtedness).

Our subsidiaries that do not guarantee the Senior Notes accounted for approximately $648 million, or 42 percent of our net sales and approximately $7 million, or 21 percent of our operating profit, for the year ended December 31, 2014, and approximately $534 million, or 41 percent of our total assets as of December 31, 2014. Amounts are presented after giving effect to intercompany eliminations.

Federal or state laws allow courts, under specific circumstances, to void debts, including guarantees, and could require holders of Senior Notes to return payments received from guarantors.

The Senior Notes are guaranteed by Koppers Holdings and the wholly-owned domestic restricted subsidiaries of Koppers Inc. If a bankruptcy proceeding or lawsuit were to be initiated by unpaid creditors, the Senior Notes and the guarantees of the Senior Notes could come under review for federal or state fraudulent transfer violations. Under federal bankruptcy law and comparable provisions of state fraudulent transfer laws, obligations under the Senior Notes or a guarantee of the Senior Notes could be voided, or claims in respect of the Senior Notes or a guarantee of the Senior Notes could be subordinated to all other debts of the debtor or that guarantor if, among other things, the debtor or the guarantor, at the time it incurred the debt evidenced by such Senior Notes or guarantee:

In addition, any payment by the debtor or guarantor under the Senior Notes or guarantee of the Senior Notes could be voided and required to be returned to the debtor or guarantor, as the case may be, or deposited in a fund for the benefit of the creditors of the debtor or guarantor.

The measure of insolvency for purposes of these fraudulent transfer laws will vary depending upon the law applied in any proceeding to determine whether a fraudulent transfer has occurred. Generally, however, a debtor or a guarantor would be considered insolvent if:

We cannot be sure as to the standards that a court would use to determine whether or not a guarantor was solvent at the relevant time, or, regardless of the standard that the court uses, that the issuance of the guarantees of the Senior Notes would not be voided or subordinated to the guarantor’s other debt. If a guarantee was legally challenged, it could also be subject to the claim that, because it was incurred for our benefit, and only indirectly for the benefit of the guarantor, the obligations of the guarantor were incurred for less than fair consideration. A court could thus void the obligations under a guarantee or subordinate a guarantee to a guarantor’s other debt or take other action detrimental to holders of the Senior Notes.

The trading price of the Senior Notes may be volatile.

The trading price of the Senior Notes could be subject to significant fluctuations in response to, among other factors, changes in our operating results, interest rates, the market for non-investment grade debt securities, general economic conditions and securities analysts’ recommendations, if any, regarding our securities.

23

Table of Contents

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

The following chart sets forth information regarding our production facilities. Generally, our production and port facilities are suitable and adequate for the purposes for which they are intended and overall have sufficient capacity to conduct business in the upcoming year.

24

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

Our corporate offices are located in leased office space in Pittsburgh, Pennsylvania. The lease term expires on December 31, 2023.

ITEM 3. LEGAL PROCEEDINGS

We are involved in litigation and various proceedings relating to environmental laws and regulations, toxic tort, product liability and other matters. An adverse outcome for certain of these cases could result in a material adverse effect on our business, cash flows and results of operations. The information related to legal matters set forth in Note 20 to the Consolidated Financial Statements of Koppers Holdings Inc. is hereby incorporated by reference.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

EXECUTIVE OFFICERS OF THE COMPANY

The following table sets forth the names, ages and positions of our and Koppers Inc.’s executive officers as of March 2, 2015. Our executive officers hold their positions until the annual meeting of the board of directors or until their respective successors are elected and qualified.

Mr. Ball was elected President and Chief Executive Officer of Koppers Holdings Inc. and Koppers Inc. in January 2015. From May 2014 through December 2014, Mr. Ball served as Chief Operating Officer of Koppers Holdings Inc. and Koppers Inc. From May 2014 until August 2014, Mr. Ball served as both Chief Operating Officer and Chief Financial Officer of Koppers Holdings Inc. and Koppers Inc. He served as Vice President and Chief Financial Officer from September 2010 to May 2014. Prior to joining Koppers, Mr. Ball was Senior Vice President and Chief Financial Officer of Calgon Carbon Inc. (granular activated carbon products and treatment systems) since 2002.

Mr. Dietz was elected Vice President, Global Business Services and Technology of Koppers Inc., in May 2011 effective July 2011. He joined Koppers in 1995 and has held positions in operations and engineering. Most recently, he was Vice President, European Operations of Koppers Inc., from January 2007 through June 2011.

Mr. Dowd joined Koppers Inc. and was elected Vice President, North American Carbon Materials and Chemicals, Koppers Inc. effective July 2012. Prior to joining Koppers, Mr. Dowd was General Manager and Vice President of North American Recycling for Exide Technologies, Inc. (lead-acid battery manufacturing) from September 2010 to October 2011. Prior to that, Mr. Dowd was Global President and Chief Operating Officer of Silberline Manufacturing Co., Inc. (specialty chemicals) from March 2005 to October 2009.

25

Table of Contents

Mr. Goydan was elected Senior Vice President, Performance Chemicals, Koppers Inc. upon our acquisition of Osmose Inc. (wood preservation) on August 15, 2014. For the ten years prior to the acquisition, Mr. Goydan served as the President of Osmose Inc.

Mr. Groves joined Koppers Inc. and was elected Vice President, Human Resources in May 2011. Prior to joining Koppers Inc. in May 2011, Mr. Groves was Senior Vice President – HR Business Partner at PNC Financial Services Group, Inc. (financial services) from May 2010 to April 2011. From April 2007 to July 2009, Mr. Groves was Vice President – Human Resources at Highmark, Inc. (health insurance). Prior to that, Mr. Groves served as Director of Compensation and HRIS from March 2005 to April 2007 at Highmark, Inc.

Ms. Hyde was elected Vice President, Safety and Environmental Affairs of Koppers Inc. in January 2005. Prior to that, Ms. Hyde held the position of Manager, Environmental Department of Koppers Inc. since 1999.

Mr. Lacy was elected Senior Vice President, Administration, General Counsel and Secretary in November 2004 and has been Senior Vice President, Administration, General Counsel and Secretary of Koppers Inc. since January 2004. Mr. Lacy had previously been elected Vice President, Law and Human Resources and Secretary of Koppers Inc. in July 2002.

Mr. Loadman was elected Senior Vice President, Railroad Products and Services in February 2015. Mr. Loadman had previously served as Vice President, Railroad and Utility Products and Services of Koppers Inc. since May 2011. Prior to that, Mr. Loadman served as Vice President and General Manager, Railroad Products and Services of Koppers Inc. Since November 1994.

Mr. McCormack was elected Vice President, Australasian Operations of Koppers Inc. in May 2014. Prior to that, Mr. McCormack served as Vice President Australian Operations from November 2006 to May 2014. Mr. McCormack had been elected Vice President, Global Marketing, Sales and Development, Carbon Materials and Chemicals of Koppers Inc. in February 2002.

Mr. Nielsen was elected Vice President, European Operations of Koppers Inc. in February 2014. Prior to that, Mr. Nielsen served as Operations Manager, European Operations of Koppers Inc. from October 2010 to January 2014. From April 1998 to September 2010, Mr. Nielsen was Plant Manager of the Koppers Inc. facility in Nyborg, Denmark.

Mr. Spiess was elected Vice President, Global Sales and Marketing, Global Carbon Materials and Chemicals of Koppers Inc. in February 2011. Mr. Spiess had been Vice President, Global Supply, European Marketing and Sales, European Operations of Koppers Inc. since November 2007. From July 2007 through October 2007, Mr. Spiess was a Business Development Manager for L&M Rohstoffhandelsgesellschaft GmbH (ferroalloy and bulk trading). Prior to that, Mr. Spiess was the executive Vice President, Aromatics Division for Ruetgers Chemicals GmbH (coal tar distillation for chemical industry).

Mr. Sullivan was elected Senior Vice President, Global Carbon Materials & Chemicals, Koppers Inc. in April 2014. Mr. Sullivan had been elected Vice President of Business Development in June 2013. Prior to joining Koppers, from March 2012 through May 2013, Mr. Sullivan was Senior Vice President, Americas of Calgon Carbon Corporation (“Calgon Carbon”) (granulated activated carbon products and treatment systems). During January and February 2012, he was Vice President, Americas of Calgon Carbon and from March 2010 to January 2012, he was the Vice President of Operations of Calgon Carbon. Mr. Sullivan was Vice President, UV and Corporate Business Development of Calgon Carbon from July 2008 to March 2010.

Ms. Tronsberg-Deihle was elected Treasurer of Koppers Holdings Inc. and Koppers Inc. in August 2008. In July 2008, Ms. Tronsberg-Deihle was appointed as our Treasurer. Ms. Tronsberg-Deihle was the Assistant Treasurer and Risk Manager of WESCO Distribution Inc. (global provider of services and procurement solutions) from 1995 to June 2008.

Mr. Zhu was elected Vice President, China Operations of Koppers Inc. in February 2013. Mr. Zhu had previously been appointed Vice President, China Operations of Koppers Inc. in March 2011. Prior to that, Mr. Zhu served as Operations Manager, China Operations of Koppers Inc. from January 2010 to March 2011. From December 2007 to January 2010, Mr. Zhu served as General Manager of Koppers (China) Carbon & Chemical Co., Ltd.

Mr. Zugay was elected Chief Financial Officer of Koppers Holdings Inc. and Koppers Inc. in August 2014. Prior to joining Koppers, Mr. Zugay was Co-Chief Executive Officer for Michael Baker Corporation (engineering and other consulting services) from December 2012 to October 2013. Mr. Zugay served as Chief Financial Officer of Michael Baker Corporation from February 2009 to January 2014.

26

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

PART II

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

Our common shares are listed and traded on the NYSE under the symbol “KOP”.

The number of registered holders of Koppers common shares at January 31, 2015 was 71.

See Note 22 to the consolidated financial statements below for information concerning dividends and high and low market prices of our common shares during the past two years.

Dividend Policy

In 2006, our board of directors adopted a dividend policy that provided for quarterly dividends, payable at the discretion of our board of directors. Dividends will be considered if cash generated by our business is in excess of our expected cash needs. Our expected cash needs include operating expenses and working capital requirements, interest and principal payments on our indebtedness, capital expenditures, incremental costs associated with being a public company, taxes and certain other costs. On an annual basis we expect to pay dividends, if declared, with cash flow from operations, but, due to seasonal or other temporary fluctuations in cash flow, we may from time to time use temporary short-term borrowings to pay quarterly dividends.

We are not required to pay dividends, and our shareholders will not be guaranteed, or have contractual or other rights, to receive dividends. Our board of directors may decide, in its discretion, at any time, to decrease the amount of dividends, otherwise modify or repeal the dividend policy or discontinue entirely the payment of dividends. On February 26, 2015, we announced that our board of directors decided to suspended our quarterly cash dividend. As a result, no dividend was issued for the first quarter of fiscal 2015. We historically had issued a quarterly cash dividend of $0.25 per share of our common stock every quarter for the past two fiscal years. We currently intend to use the annual cash savings from such dividend suspension to preserve financial flexibility while funding our strategic growth initiatives and debt repayments. Any future determination to declare and pay dividends will be made at the discretion of our board of directors, after taking into account our financial results, capital requirements and other factors it may deem relevant.

Because we are a holding company, substantially all the assets shown on our consolidated balance sheet are held by our subsidiaries. Accordingly, our earnings and cash flow and our ability to pay dividends are dependent upon the earnings and cash flows of our subsidiaries and the distribution or other payment of such earnings to us in the form of dividends. Our ability to pay dividends is restricted by limitations on the ability of our only direct subsidiary, Koppers Inc., to pay dividends, as a result of limitations imposed by Koppers Inc.’s credit agreement, the indenture governing Koppers Inc.’s Senior Notes and by Pennsylvania law. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources – Restrictions on Dividends to Koppers Holdings.”

Equity Compensation Plans

Issuer Purchases of Equity Securities

No shares were repurchased in the quarter ended December 31, 2014 under the current $75 million share repurchase program approved in November 2011. The approximate dollar value of common shares that may yet be purchased under this program is $52.8 million. The repurchase program has no expiration date.

27

Table of Contents

ITEM 6. SELECTED FINANCIAL DATA

The following table contains our selected historical consolidated financial data for the five years ended December 31, 2014. The selected historical consolidated financial data for each of the years ended December 31, 2014, 2013, 2012, 2011 and 2010 have been derived from our audited consolidated financial statements. This selected financial data should be read in conjunction with Koppers’ Consolidated Financial Statements and related notes included elsewhere in this Annual Report on Form 10-K as well as Item 7 Management’s Discussion and Analysis of Financial Condition and Results of Operations.

28

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Overview

We are a leading integrated global provider of carbon compounds, chemicals and treated wood products and services. Our products and services are used in a variety of niche applications in a diverse range of end-markets, including the aluminum, railroad, specialty chemical, utility, rubber, concrete, steel, residential lumber and agricultural industries. We serve our customers through a comprehensive global manufacturing and distribution network, with manufacturing facilities located in North America, Australasia, China and Europe.

We operate three principal businesses: Carbon Materials and Chemicals (“CMC”), Railroad and Utility Products and Services (“RUPS”) and Performance Chemicals (“PC”).

Through our CMC business, we process coal tar into a variety of products, including carbon pitch, creosote, carbon black feedstock, naphthalene and phthalic anhydride, which are intermediate materials necessary in the production of aluminum, the pressure treatment of wood, the production of carbon black, the production of high-strength concrete, and the production of plasticizers and specialty chemicals, respectively. Through our RUPS business, we believe that we are the largest supplier of railroad crossties to the North American railroads. Our other treated wood products include utility poles for the electric and telephone utility industries in Australia. We also provide rail joint bar products as well as various services to the railroad industry. Through our PC business, we believe that we are the global leader in developing, manufacturing and marketing wood preservation chemicals and wood treatment technologies for use in pressure treating lumber for residential, industrial and agricultural applications.

On August 15, 2014, we completed the acquisition of the wood preservation and railroad services businesses (the “Osmose Entities”) of Osmose Holdings, Inc. (“Osmose”). The majority of the wood preservation business is now known as Performance Chemicals. We believe that Performance Chemicals is the global leader in developing, manufacturing and marketing wood preservation chemicals and wood treatment technologies. The business has operations and sales in North America, South America, Europe and Australasia, and accounted for approximately $350 million of the revenue for the Osmose Entities in 2013. This business serves a diverse range of end-markets including infrastructure, residential and commercial construction, and agriculture. The wood preservation business includes approximately $16 million of revenue related to a wood treating facility located in Houston, Texas that is part of our RUPS segment.

The railroad services business is now known as Koppers Railroad Structures. We believe that Koppers Railroad Structures is a leading provider of railroad infrastructure services, including bridge inspection, engineering, maintenance and repair, and construction services for the Class I and shortline railroads in North America. The business accounted for approximately $40 million of revenue for the Osmose Entities in 2013.

The aggregate cash purchase price for the Osmose Entities was $494.1 million. Revenues for the Osmose Entities in 2013 were approximately $390 million. Net sales from the Osmose Entities from August 15, 2014 to December 31, 2014 amounted to $144.4 million. The acquisition is expected to add more than $400 million of sales at EBITDA margins that are expected to be above our target level of 12 percent.

In January 2014, we completed the acquisition of a crosstie treating plant in Ashcroft, British Columbia, Canada from Tolko Industries, Inc. for a purchase price of $29.8 million. The facility, provided $29.2 million in revenue in 2014 and gives Koppers an operating presence in the Canadian railroad market.

In October 2012 we entered into an agreement with Nippon Steel and Sumikin Chemical (“Nippon”) and several other entities to develop and construct a fully integrated coal tar based carbon products complex in Pizhou City, Jiangsu Province, China. The complex includes a 300,000 metric ton tar distillation facility which is majority-owned by Koppers, as well as a carbon black plant and a needle coke plant that will be owned by Nippon. A significant portion of the products produced at the tar distillation plant will be sold under a long-term contract with Nippon to supply their carbon black and needle coke plants. The construction of the tar distillation plant has been completed. The construction of the carbon black and needle coke plants has been substantially completed and is in the process of obtaining operating permits. We will be selling all of our production from the new facility into the domestic Chinese market until the carbon black and needle coke facilities are fully operational, which is estimated to occur near the end of 2015.

29

Table of Contents

In October 2013, we were informed by the Tangshan Government of its intention to close the coke batteries owned and operated by our joint venture partner, Tangshan Iron and Steel Group Co., Ltd (“TISCO”), in Tangshan, China. The Tangshan Government has ordered the closure of these coke batteries in an effort to improve the air quality in the Tangshan area. One of TISCO’s two coke batteries shut down in March 2014 and we had previously been informed that the other coke battery adjacent to Koppers (China) Carbon & Chemical Company Limited (“KCCC”) was scheduled to be shut down by the end of 2014. The date of the estimated shutdown is not firm, and we have recently been informed by TISCO that the shutdown of their operating coke battery adjacent to KCCC may not occur for 12 to 18 months. Our 60 percent owned subsidiary, KCCC, is located adjacent to TISCO’s coke facility and relies on its operations for a significant portion of raw material supply, utilities and other shared services. Closure of the TISCO coke batteries directly impacts KCCC’s ability to operate its coal tar distillation plant and we have determined that KCCC is unable to continue coal tar distillation activities at the site once TISCO ceases production activities at the adjacent facility. However, we may decide to close KCCC prior to the shut down of TISCO’s coke batteries. We are continuing to evaluate our options, which in addition to closure include transitioning to a new location or entering into other strategic partnerships with other unrelated coal tar distillation companies. As of December 31, 2014, substantially all of the net book value of fixed assets subject to impairment has been depreciated.

We believe we will be able to continue fulfilling current domestic Chinese customers’ demands and our export commitments with capacity at Koppers (Jiangsu) Carbon Chemical Company Limited (“KJCC”), which commenced production activities in August 2014, TKK, our 30 percent owned Chinese subsidiary, and through other commercial relationships in China. However, our margin on export sales may be negatively affected as a result of these actions.

Outlook

Trend Overview

Our businesses and results of operations are impacted by various competitive and other factors including (i) the impact of global economic conditions on demand for our products, including the impact of imported products from competitors in certain regions where we operate; (ii) raw materials pricing and availability, in particular the cost and availability of hardwood lumber for railroad crossties, and the cost and amount of coal tar available in global markets, which is negatively affected by reductions in steel production and increases in scrap copper prices; (iii) volatility in oil prices, which impacts the cost of coal tar and certain other raw materials, as well as selling prices and margins for certain of our products including carbon black feedstock, phthalic anhydride, and naphthalene; (iv) competitive conditions in global carbon pitch markets; and (v) changes in foreign exchange rates.

The availability of coal tar is linked to levels of metallurgical coke production. As the global steel industry has reduced production of steel and metallurgical coke, the volumes of coal tar, a by-product of metallurgical coke production, have also been reduced. Our ability to obtain coal tar and the price we are able to negotiate has a significant impact on the level of profitability of our business. Many of our sales contracts include provisions that allow for price increases based on increases in the price of raw materials, which has allowed us to generally maintain profit dollars in our core businesses. However, significant increases in raw material costs can result in margin dilution if only the increased cost of the raw material is passed on to the customer. Additionally, in certain regions such as China that have competing markets for coal tar, or in regions where the available supply of our products exceeds demand, we may not be able to recover raw material cost increases in the selling prices for our end products.

The primary product produced by CMC is carbon pitch, which is sold primarily to the aluminum industry to be used in the production of carbon anodes. The smelting of aluminum requires significant amounts of energy, which is a major cost component for the aluminum industry. As a result, new production facilities are being built in regions with low energy costs such as the Middle East, while regions with higher energy costs such as the United States, Australia and Western Europe have seen significant amounts of smelting capacity idled or closed over the last several years. Our operations in China have generally had lower profit margins than our operations in the mature regions due to a difficult pricing environment in the Middle East and in China as those regions have experienced an excess supply of pitch.

Our businesses and results of operations were also negatively affected in 2012, 2013 and 2014 by difficult economic conditions in Europe. Certain key end markets experienced significant reductions in demand that have negatively affected the profitability for most of our products produced and sold in Europe, and we expect this to continue for at least the foreseeable future. Additionally, during 2013 and 2014 our profitability in North America has been negatively impacted by increased levels of imports from competitors in Europe due to weak end-market demand there. The geographic shift in end market demand over the past several years has resulted in a trend of declining utilization rates in North America and Europe over that same period.

30

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

As a result we have embarked on a plan to restructure our CMC operating footprint that we expect will eventually reduce the number of coal tar distillation facilities serving North America and Europe from the six that were in operation at the end of 2013 to three in total. The closure of the first facility occurred in April 2014 as we ceased distillation in Uithoorn, the Netherlands. The reduction in operating capacity resulted in charges to pre-tax earnings of $27.7 million in the year ended December 31, 2014 and $9.5 million for the year ended December 31, 2013. There may be additional curtailments or closures at our other facilities as part of our efforts to reduce our cost structure and improve capacity utilization in our businesses.

Several of our products, particularly carbon black feedstock and phthalic anhydride, have end market pricing that is linked to oil. Historically, when oil prices increase we have benefited in terms of revenues and profitability from the higher pricing for these products as the cost of coal tar has not increased proportionally with oil. Conversely, the recent significant decline in oil prices has resulted in lower selling prices and profitability for carbon black feedstock, phthalic anhydride and naphthalene, which are products produced and sold by our CMC segment. However, a significant portion of our coal tar is also impacted by the price of oil, which has resulted in lower raw material and finished product costs for certain regions that will partially offset the negative impact from lower product prices.

The primary end-market for RUPS is the North American railroad industry, which has a large installed base of wood crossties that require periodic replacement. As a result, our sales volumes for crossties and our operating results for this business have historically been relatively stable. However, our railroad business can be negatively affected by weather conditions that make it difficult for sawmills that provide our raw material to harvest timber. Additionally, some of our Class I railroad customers, who make up the largest portion of our business, may reduce inventory levels at certain times to manage working capital, which can adversely affect our volumes and profitability during certain periods.

In the second half of 2013 and first half of 2014 we experienced reduced purchases of untreated crossties due to increased competition from other hardwood lumber products. This competition has resulted in higher prices and reduced availability for crossties which resulted in lower crossties sales volumes in 2014. Hardwood availability and crosstie production began to improve in the second half of 2014 and we expect this improvement to continue throughout 2015.

The primary end-market for the wood treating chemicals sold by our PC business is the residential remodeling market, which is influenced by existing home sales and consumer spending on remodeling projects. As most of the products sold by PC are copper-based products, changes in the price and availability of copper can have a significant impact on product pricing and margins.

Seasonality and Effects of Weather on Operations

Our quarterly operating results fluctuate due to a variety of factors that are outside of our control, including inclement weather conditions, which in the past have affected operating results. Operations at some of our facilities have at times been reduced during the winter months. Moreover, demand for some of our products declines during periods of inclement weather. As a result of the foregoing, we anticipate that we may experience material fluctuations in quarterly operating results. Historically, our operating results have been significantly lower in the first and fourth calendar quarters as compared to the second and third calendar quarters.

Results of Operations – Comparison of Years Ended December 31, 2014 and December 31, 2013

Consolidated Results

Net sales for the years ended December 31, 2014 and 2013 are summarized by segment in the following table:

31

Table of Contents

Carbon Materials and Chemicals net sales for the year ended December 31, 2014 decreased by $72.4 million or eight percent. Lower sales volumes and prices for pitch decreased sales by five percent over the prior year due to lower sales volumes in North America as a result of lower aluminum production, combined with lower pricing in all regions due to competitive conditions. Sales for distillates reduced sales by one percent over the prior year as lower sales prices for carbon black feedstock were partially offset by higher sales volumes for carbon black feedstock from our Chinese operations due to incremental sales from KJCC which began production in August 2014. Sales for coal tar chemicals were flat as higher sales volumes increased sales by two percent driven by incremental sales volumes of naphthalene from KJCC combined with higher sales volumes for phthalic anhydride but were offset by lower sales prices for phthalic anhydride and naphthalene as a result of lower oil prices. Foreign currency translation reduced sales by one percent over the prior year as a result of the strong U.S. dollar.

Railroad and Utility Products and Services net sales for the year ended December 31, 2014 increased by $25.6 million or four percent as incremental sales from the Osmose acquisition in August 2014 and the Ashcroft acquisition in January 2014 more than offset lower sales for railroad crossties and utility poles. Sales of crossties reduced sales by three percent as lower sales volumes due to reduced raw material availability were partially offset by higher sales prices. Sales of utility poles reduced sales by two percent mainly as a result of lower sales volumes from Australian operations which were negatively impacted by wet weather conditions.

Performance Chemicals net sales for the year ended December 31, 2014 were $123.5 million. This segment was formed from the Osmose acquisition which closed in August 2014. Sales for this business, which produces various copper-based wood preservatives used in decking, fencing and other residential, commercial, and agricultural applications, are driven primarily by residential remodeling and existing home sales.

Cost of sales as a percentage of net sales was 86 percent for the year ended December 31, 2014, the same as in the prior year, as significant restructuring costs were incurred in both years. Overall, cost of sales decreased by $79.0 million when compared to the prior year as the positive impact of acquisitions and the new joint venture in China more than offset lower crosstie purchases for RUPS and lower sales prices and volumes for CMC.

Depreciation and amortization charges for the year ended December 31, 2014 were $14.3 million higher when compared to the prior year due mainly to $9.7 million of depreciation and amortization from the Osmose and Ashcroft acquisitions and the new plant in China.

Impairment and restructuring charges for the year ended December 31, 2014 were $6.0 million higher when compared to the prior year due mainly to higher charges related to our CMC facilities located in Uithoorn, the Netherlands, and Tangshan, China.

Selling, general and administrative expenses for the year ended December 31, 2014 were $44.5 million higher when compared to the prior year due primarily to the Osmose acquisition and related integration costs.

Interest expense for the year ended December 31, 2014 was $12.3 million higher when compared to the prior year due mainly to debt incurred to finance the Osmose acquisition.

Income taxes for the year ended December 31, 2014 were $2.7 million lower when compared to the prior year period. Our effective income tax rate for the year ended December 31, 2014 was (578.0) percent as compared to 47.8 percent in the prior year. The change in the effective income tax rate is due to the one-time tax charges of $24.3 million that are related to the legal entity restructuring project that we completed at the end of 2014. Additionally, the effective tax rate was negatively affected by the non-deductibility of certain expenses related to the pending closure of the Uithoorn facility, the impairment of KCCC’s coal tar distillation facility and the inability to record a tax benefit on pre-tax losses of certain foreign subsidiaries. These items are partially offset by a tax benefit of $6.0 million due to management’s decision that a deferred tax liability for certain undistributed earnings of its European subsidiaries was no longer necessary as these earnings are permanently reinvested.

32

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

Segment Results

Segment operating profit for the years ended December 31, 2014 and 2013 is summarized by segment in the following table:

Carbon Materials and Chemicals operating profit for the year ended December 31, 2014 decreased by $49.2 million compared to the prior year. CMC operating profit as a percent of sales decreased to (0.6) percent from 4.8 percent in the prior year due mainly to lower sales volumes and prices for carbon pitch combined with lower sales prices for phthalic anhydride, carbon black feedstock and naphthalene due to lower oil prices.

Railroad and Utility Products and Services operating profit for the year ended December 31, 2014 decreased by $4.7 million or eight percent compared to the prior year. Operating profit as a percentage of sales decreased to 9.0 percent from 10.2 percent in the prior year due to reduced sales volumes for railroad crossties driven by lower raw material availability.

Performance Chemicals operating profit for the year ended December 31, 2014 amounted to $1.6 million or 1.3 percent of sales from the closing of the Osmose acquisition at August 15, 2014 through December 31, 2014 Amortization as a result of purchase accounting and inventory revaluations reduced operating profit by $3.5 million. Additionally, profitability was negatively impacted due to normal seasonality for residential construction.

Results of Operations – Comparison of Years Ended December 31, 2013 and December 31, 2012

Consolidated Results

Net sales for the years ended December 31, 2013 and 2012 are summarized by segment in the following table:

Carbon Materials and Chemicals net sales for the year ended December 31, 2013 decreased by $93.6 million or nine percent. Lower sales volumes and prices for carbon pitch decreased sales by six percent over the prior year driven by depressed market conditions in Europe, a low pricing environment in Middle East markets, and smelter closures in Europe and Australia that occurred during 2012. Sales volumes for coal tar chemicals decreased sales by three percent driven by lower sales volumes

33

Table of Contents

for phthalic anhydride in the United States and lower sales volumes for naphthalene in Europe. The reduced sales volumes for phthalic anhydride were due mainly to a customer plant closure, lower demand from plasticizer markets due to substitute products, and increased levels of imports from Europe.

Railroad and Utility Products and Services net sales for the year ended December 31, 2013 increased by $16.9 million or three percent. Sales volumes and prices for utility poles increased sales by five percent mainly due to the acquisition of a utility pole business in Australia in November 2012, which more than offset a reduction in sales volumes for untreated crossties of one percent due to competitive hardwood lumber markets.

Cost of sales as a percentage of net sales was 86 percent for the year ended December 31, 2013 compared to 85 percent in the prior year due to $6.2 million of charges for restructuring and tank cleaning costs in 2013. Overall, cost of sales decreased by $59.9 million when compared to the prior year period due primarily to lower sales volumes and prices for CMC.

Depreciation and amortization and Impairment charges for the year ended December 31, 2013 were $13.4 million higher combined when compared to the prior year due mainly to $12.0 million of impairment charges related to our CMC facilities located in Tangshan, China, Uithoorn, The Netherlands, Follansbee, West Virginia, and Portland, Oregon.

Selling, general and administrative expenses for the year ended December 31, 2013 were $3.9 million lower when compared to the prior year period due primarily to lower compensation-related expenses.

Interest expense for the year ended December 31, 2013 was $1.1 million lower when compared to the prior year period reflecting lower average debt levels in 2013.

Income taxes for the year ended December 31, 2013 were $3.5 million higher when compared to the prior year period. Our effective income tax rate for the year ended December 31, 2013 was 47.8 percent as compared to 33.1 percent in the prior year. The increase in the effective income tax rate is due to the non-deductibility of $11.0 million of impairment expenses in Europe and China for 2013 combined with the favorable impact in 2012 of tax benefits related to foreign tax credits and domestic manufacturing deductions totaling $1.6 million and the recognition of certain state tax net operating loss carryforwards related to prior tax years of $1.5 million.

Segment Results

Segment operating profit for the years ended December 31, 2013 and 2012 is summarized by segment in the following table:

Carbon Materials and Chemicals operating profit for the year ended December 31, 2013 decreased by $39.2 million or 47 percent compared to the prior year. CMC operating profit as a percent of sales decreased to 4.8 percent from 8.3 percent in the prior year due mainly to $16.5 million of restructuring and tank cleaning charges combined with lower sales volumes and prices for carbon pitch, lower sales volumes for phthalic anhydride, and lower capacity utilization, which more than offset $3.9 million of certain items recognized in 2012 that did not recur in 2013 including an increase in our allowance for doubtful accounts due to a customer collection issue in Europe, costs related to a pitch tank leak in Australia, and charges related to a plant outage in The Netherlands, partially offset by a refund resulting from a supplier audit of material transport weights.

34

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

Railroad and Utility Products and Services operating profit for the year ended December 31, 2013 increased by $13.2 million or 29 percent. Operating profit as a percentage of sales increased to 10.2 percent from 8.1 percent in the prior year due to a favorable product mix for railroad crossties combined with higher profitability and margins from our utility pole business in Australia mainly as a result of the acquisition of the Western Pole business in November 2012.

Cash Flow

Net cash provided by operating activities was $35.5 million for the year ended December 31, 2014 as compared to net cash provided by operating activities of $117.6 million for the year ended December 31, 2013. The reduction in cash provided by operating activities was driven by lower net income in 2014 combined with an increase in inventory related to railroad crossties. The increase in inventory of $14 million was mainly a result of increased availability for crossties as we are in the process of rebuilding inventories that were at historically low levels due to reduced crosstie availability over the past couple years driven by the shifting of sawmill production to the competing housing and crane mat markets.

Net cash provided by operating activities was $117.6 million for the year ended December 31, 2013 as compared to net cash provided by operating activities of $77.8 million for the year ended December 31, 2012. Net working capital changes provided $29.4 million in cash in 2013 as compared to net working capital uses of $21.2 million in 2012. The decrease in working capital requirements in 2013 was due primarily to reductions in inventory providing $21.6 million in cash as a result of lower availability for crossties compared to cash used for inventories in 2012 of $26.5 million. Crosstie availability was reduced due to the shifting of sawmill production to the competing housing and crane mat markets due to higher demand and significantly increased hardwood lumber prices.

Net cash used in investing activities was $580.0 million for the year ended December 31, 2014 as compared to net cash used in investing activities of $72.3 million for the year ended December 31, 2013 due mainly to the Osmose acquisition.

Net cash used in investing activities was $72.3 million for the year ended December 31, 2013 as compared to net cash used in investing activities of $39.9 million for the year ended December 31, 2012 due mainly to expenditures of approximately $37 million in 2013 for the construction of our tar distillation facility in Jiangsu Province in China.

Net cash provided by financing activities was $516.1 million for the year ended December 31, 2014 as compared to net cash used in financing activities of $30.3 million for the year ended December 31, 2013. The increase in cash used for financing activities was principally due to new debt financing related to the Osmose acquisition which closed in August 2014.

Net cash used in financing activities was $30.3 million for the year ended December 31, 2013 as compared to net cash used in financing activities of $27.3 million for the year ended December 31, 2012. The increase in cash used in financing activities was principally due to an increase in stock repurchases of $9.4 million which more than offset an increase in borrowings totaling $6.6 million for the year ended December 31, 2013.

Dividends paid were $20.4 million for the year ended December 31, 2014 as compared to dividends paid of $21.1 million for the year ended December 31, 2013. The decrease in dividends paid reflects of a dividend from our KCCC joint venture in China in 2013 to its non-controlling shareholder.

Liquidity and Capital Resources

Restrictions on Dividends to Koppers Holdings

Koppers Holdings depends on the dividends from the earnings of Koppers Inc. and its subsidiaries to generate the funds necessary to meet its financial obligations, including the payment of any declared dividend of Koppers Holdings. Koppers Inc.’s credit agreement prohibits it from making dividend payments to us unless (1) such dividend payments are permitted by the indenture governing Koppers Inc.’s Senior Notes and (2) no event of default or potential default has occurred or is continuing under the credit agreement. The indenture governing Koppers Inc.’s Senior Notes restricts its ability to finance our payment of dividends if (1) a default has occurred or would result from such financing, (2) a restricted subsidiary of Koppers Inc. which is not a guarantor under the indenture is not able to incur additional indebtedness (as defined in the indenture), and (3) the sum of all restricted payments (as defined in the indenture) have exceeded the permitted amount (which we refer to as the “basket”) at such point in time.

35

Table of Contents

The basket is governed by a formula based on the sum of a beginning amount, plus or minus a percentage of Koppers Inc.’s consolidated net income (as defined in the indenture), plus the net proceeds of Koppers Inc.’s qualified stock issuance or conversions of debt to qualified stock, plus the net proceeds from the sale of or a reduction in an investment (as defined in the indenture) or the value of the assets of an unrestricted subsidiary which is designated a restricted subsidiary. At December 31, 2014 the basket totaled $201.3 million. Notwithstanding such restrictions, the indenture governing Koppers Inc.’s Senior Notes permits an additional aggregate amount of $20.0 million each fiscal year to finance dividends on the capital stock of Koppers Holdings, whether or not there is any basket availability, provided that at the time of such payment, no default in the indenture has occurred or would result from financing the dividends.

In addition, certain required coverage ratios in Koppers Inc.’s revolving credit facility may restrict the ability of Koppers Inc. to pay dividends. See “—Debt Covenants.”

Liquidity

The Koppers Inc. revolving credit facility agreement provides for a senior secured revolving credit facility of up to $500.0 million and a senior secured term loan of up to $300.0 million at variable interest rates. Borrowings under the revolving credit facility are secured by a first priority lien on substantially all of the assets of Koppers Inc. and its material domestic subsidiaries. The revolving credit facility contains certain covenants for Koppers Inc. and its restricted subsidiaries that limit capital expenditures, additional indebtedness, liens, dividends and investments or acquisitions. In addition, such covenants give rise to events of default upon the failure by Koppers Inc. and its restricted subsidiaries to meet certain financial ratios.

As of December 31, 2014, we had $113.5 million of unused revolving credit availability for working capital purposes after restrictions by various debt covenants and certain letter of credit commitments. As of December 31, 2014, $61.5 million of commitments were utilized by outstanding letters of credit.

The following table summarizes our estimated liquidity as of December 31, 2014 (dollars in millions):

Our estimated liquidity was $451.4 million at December 31, 2013. The decrease in estimated liquidity is due primarily to lower cash and borrowings to finance the acquisition of the wood preservation and railroad services businesses of Osmose and the construction of a coal tar distillation facility in China.

Our need for cash in the next twelve months relates primarily to contractual obligations which include debt service, purchase commitments and operating leases, as well as working capital, capital maintenance programs, the funding of our new coal tar distillation facility in China, and mandatory defined benefit plan funding. We may also use cash to pursue potential strategic acquisitions. Capital expenditures in 2015, excluding acquisitions, are expected to total approximately $45 million. Construction of the Company’s new coal tar distillation facility in China was completed in August 2014.

In January 2015, Koppers Inc. withdrew a new offering of $400.0 million of senior notes due 2020 due to volatility in the credit markets. Koppers Inc. intended to use the proceeds of the new offering for general corporate purposes and to fund a tender offer to repurchase $300.0 million of its Senior Notes due 2019. When Koppers Inc. withdrew its new offering, it also withdrew its tender offer. We will potentially revisit an offering in the future if market conditions become more favorable.

36

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

Schedule of Certain Contractual Obligations

The following table details our projected payments for our significant contractual obligations as of December 31, 2014. The table is based upon available information and certain assumptions we believe to be reasonable.

Pension and other employee benefit plan funding obligations (for defined benefit plans) are not included in the table above. We expect defined benefit plan contributions to total less than $5 million in 2015. Estimated funding obligations are determined by asset performance, workforce and retiree demographics, tax and employment laws and other actuarial assumptions which may change the annual funding obligations in addition to decisions to fund in excess of statutorily required amounts. The funded status of our defined benefit plans is disclosed in Note 15 to the Company’s consolidated financial statements.

As of December 31, 2014, there was $7.2 million of tax liabilities related to unrecognized tax benefits. Because of the high degree of uncertainty regarding the timing of future cash outflows associated with these liabilities, the Company is unable to estimate the years in which settlement will occur with the respective taxing authorities. See Note 10 to the Company’s consolidated financial statements for further information.

Schedule of Certain Other Commercial Commitments

The following table details our projected payments for other significant commercial commitments as of December 31, 2014. The table is based upon available information and certain assumptions we believe to be reasonable.

Debt Covenants

The covenants that affect availability of the revolving credit facility and which may restrict the ability of Koppers Inc. to pay dividends include the following financial ratios:

We are currently in compliance with all covenants in the credit agreement governing the revolving credit facility.

At December 31, 2014, Koppers Inc. had $300.0 million principal value outstanding of Senior Notes. The Senior Notes include customary covenants that restrict, among other things, our ability to incur additional debt, pay dividends or make certain other restricted payments, incur liens, merge or sell all or substantially all of the assets or enter into various transactions with affiliates. We are currently in compliance with all covenants in the Senior Notes indenture.

37

Table of Contents

Other Matters

Foreign Operations and Foreign Currency Transactions

We are subject to foreign currency translation fluctuations due to our foreign operations. For the years ended December 31, 2014, 2013 and 2012, exchange rate fluctuations resulted in a (decrease) increase to comprehensive income of $(30.6) million, $(10.0) million and $5.9 million, respectively. Foreign currency transaction gains and losses result from transactions denominated in a currency which is different from the currency used by the entity to prepare its financial statements. Foreign currency transaction (gains) losses were $(0.6) million $0.5 million and $1.7 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Recently Issued Accounting Guidance

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 requires an entity to recognize revenue in a manner that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the amendment provides five steps that an entity should apply when recognizing revenue. The amendment also specifies the accounting of some costs to obtain or fulfill a contract with a customer and expands the disclosure requirements around contracts with customers. An entity can either adopt this amendment retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the update recognized at the date of initial application. The amendment is effective for annual reporting periods beginning after December 15, 2016. Early adoption is not permitted. The Company is currently evaluating the impact of the adoption of ASU 2014-09 on the Company’s financial statements.

In August 2014, the FASB issued ASU No. 2014-15, “Disclosure of Uncertainties About an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”), which requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date the financial statements are issued and provides guidance on determining when and how to disclose going concern uncertainties in the financial statements. Certain disclosures will be required if conditions give rise to substantial doubt about an entity’s ability to continue as a going concern. ASU 2014-15 applies to all entities and is effective for annual and interim reporting periods ending after December 15, 2016, with early adoption permitted. We do not expect that the adoption of this standard will have a material effect on the Company’s financial statements.

Critical Accounting Policies

The preparation of financial statements in conformity with generally accepted accounting principles in the United States requires management to use judgment in making estimates and assumptions that affect the reported amounts of revenues and expenses, assets and liabilities, and the disclosure of contingent liabilities. The following accounting policies are based on, among other things, judgments and assumptions made by management that include inherent risks and uncertainties. Our management’s estimates are based on the relevant information available at the end of each period.

Revenue Recognition. We recognize revenue from product sales at the time of shipment or when title passes to the customer. We recognize revenue related to the procurement of certain untreated railroad crossties upon transfer of title, which occurs upon delivery to our plant and acceptance by the customer. Service revenue, consisting primarily of wood treating services, is recognized at the time the service is provided. Our recognition of revenue with respect to untreated crossties meets all the recognition criteria of the Securities and Exchange Commission’s Staff Accounting Bulletin Topic 13.A.3, including transfer of title and risk of ownership, the existence of fixed purchase commitments and delivery schedules established by the customer and the completion of all performance obligations by us.

Accounts Receivable. We maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. In circumstances where we become aware of a specific customer’s inability to meet its financial obligations, a specific reserve for bad debts is recorded against amounts due. If the financial conditions of our customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. During 2012, we recorded an allowance for doubtful accounts totaling $3.1 million related to the bankruptcy of a European customer.

38

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

Inventories. In the United States, CMC and RUPS inventories are valued at the lower of cost, utilizing the last-in, first-out (“LIFO”) basis, or market. Remaining inventories are valued at the lower of cost, utilizing the first-in, first-out basis (“FIFO”), or market. Market represents replacement cost for raw materials and net realizable value for work in process and finished goods. LIFO inventories constituted approximately 61 percent and 62 percent of the FIFO inventory value at December 31, 2014 and 2013, respectively. In 2014, 2013 and 2012, we recorded inventory write-downs of $2.4 million, $0.6 million and $0.4 million, respectively, related to lower of cost or market conditions.

Long-Lived Assets. Our management periodically evaluates the net realizable value of long-lived assets, including property, plant and equipment, based on a number of factors including operating results, projected future cash flows and business plans. We record long-lived assets at the lower of cost or fair value, with fair value based on assumptions concerning the amount and timing of estimated future cash flows. Since judgment is involved in determining the fair value of fixed assets, there is a risk that the carrying value of our long-lived assets may be overstated. During 2014 and 2013, we recorded fixed asset impairment charges of $4.7 million and $11.9 million, respectively, primarily consisting of write-downs related to the Company’s coal tar distillation facilities located in the Netherlands, China and the United States due to decisions to curtail operations or changes in estimates related to the expected useful lives of the facilities.

Goodwill and Intangible Assets. Goodwill is not amortized but is assessed for impairment at least on an annual basis. In making this assessment, management relies on various factors, including operating results, estimated future cash flows, and business plans. There are inherent uncertainties related to these factors and in our management’s judgment in applying them to the analysis of goodwill impairment. Because management’s judgment is involved in performing goodwill impairment analyses, there is risk that the carrying value of goodwill is overstated.

Goodwill valuations are performed using projected operating results of the relevant reporting units. We have four reporting units for purposes of goodwill evaluation. These units consist of our CMC operating segment, Performance Chemicals operating segment, Railroad Products and Services and Koppers Wood Products. Railroad Products and Services and Koppers Wood Products are one level below our RUPS operating segment. The Railroad Products and Services reporting unit primarily serves the rail industry in the United States and the Koppers Wood Products reporting unit primarily serves the utility markets in Australia.

Identifiable intangible assets that do not have indefinite lives are amortized on a straight-line basis over their estimated useful lives. In connection with the acquisition of the wood preservation and the railroad services businesses of Osmose Holdings Inc. in 2014, we have identifiable intangible assets of $167.7 million as of December 31, 2014. We annually evaluate the remaining useful life of the intangible asset being amortized to determine whether events or circumstances warrant a revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life is changed, the remaining carrying amount of the intangible asset will be amortized prospectively over that revised remaining useful life. Identifiable intangible assets are also subject to testing for recoverability whenever events or changes indicate that its carrying value may not be recoverable.

Changes in economic and operating conditions impacting these assumptions could result in goodwill and intangible asset impairments in future periods. Additionally, disruptions to our business such as prolonged recessionary periods or unexpected significant declines in operating results of the relevant reporting units could result in charges for goodwill and other asset impairments in future periods.

Deferred Tax Assets. At December 31, 2014 our balance sheet included $58.4 million of deferred tax assets, net of a $32.4 million valuation allowance. We have determined that this valuation allowance is required for our deferred tax assets based on future earnings projections. In order to fully realize our deferred tax assets in relation to our temporary differences and exclusive to any net operating losses, we will have to generate approximately $169 million of taxable income. The realization of these deferred tax assets is not subject to any expiration and is dependent upon the reversal of the underlying temporary differences. In order to fully realize our deferred tax assets (net of valuation allowances) in relation to our state net operating losses, we will have to generate approximately $600 million of taxable income before any applicable adjustments and apportionment fractions per state laws between 2015 and 2026. To the extent that we encounter unexpected difficulties in market conditions, adverse changes in regulations affecting our businesses and operations, adverse outcomes in legal and environmental matters, or any other unfavorable conditions, the projections for future taxable income may be overstated and we may be required to record an increase in the valuation allowance related to these deferred tax assets which could have a material adverse effect on income in the future. In 2014, we recorded a deferred tax asset and offsetting valuation allowance

39

Table of Contents

Koppers Holdings Inc.    2014 Annual Report

against that deferred tax asset of $5.4 million for 2014 foreign net operating losses and other 2014 foreign items that most likely will not be deducted. In 2014, we recorded a deferred tax asset and offsetting valuation allowance against that deferred tax asset of $5.8 million for foreign tax credits earned in prior tax years. In 2014, as a result of the Osmose acquisition, we recorded a deferred tax asset and offsetting valuation allowance against that deferred tax asset of $1.5 million for acquired foreign net operating losses that most likely will not be deducted. Item 8. Financial Statements and Supplementary Data – Note 10 includes information on deferred tax activity during the past two years.

Accrued Insurance. We are insured for property, casualty and workers’ compensation insurance up to various stop loss amounts after meeting required retention levels. Losses are accrued based upon estimates of the liability for the related retentions for claims incurred using certain actuarial assumptions followed in the insurance industry and based on our experience. In the event we incur a significant number of losses beyond the coverage retention limits, additional expense beyond the actuarial projections would be required. Item 8. Financial Statements and Supplementary Data – Note 2 includes information on expense recognized during the past two years.

Asset Retirement Obligations. We measure asset retirement obligations based upon the applicable accounting guidance, using certain assumptions including estimates regarding the recovery of residues in storage tanks. In the event that operational or regulatory issues vary from our estimates, we could incur additional significant charges to income and increases in cash expenditures related to the disposal of those residues. Certain conditional asset retirement obligations related to facilities have not been recorded in the consolidated financial statements due to uncertainties surrounding the ultimate settlement date and estimate of fair value related to a legal obligation to perform an asset retirement activity. At the date a reasonable estimate of the ultimate settlement can be made, we will record an asset retirement obligation and such amounts may be material to the consolidated financial statements in the period in which they are recorded. In 2014, we recorded additional asset retirement obligations of $4.1 million related to storage tank and railcar cleaning costs in the United States. Item 8. Financial Statements and Supplementary Data – Note 2 includes information on expense recognized during the past two years.

Derivative financial instruments. We use swap contracts to manage copper price risk associated with forecasted purchases of materials used in our manufacturing processes. Contracts are not held for trading or speculative purposes.

We recognize the fair value of the swap contracts as an asset or liability at each reporting date. We designates the swap contracts as cash flow hedges and the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive (loss) earnings until it is reclassified into earnings when the hedged transaction affects earnings. We utilize the dollar offset method to retrospectively measure hedge ineffectiveness. Gains and losses from hedge ineffectiveness are recognized in current earnings. Because of price volatility in the market price of copper and its effect on the dollar offset hedge effectiveness test, we may be required to recognize material unrealized gains and losses as a result of this measurement in current earnings.

Pension and Postretirement Benefits. Accounting for pension and other postretirement benefit obligations involves numerous assumptions, the most significant of which relate to the following:

We develop our demographics and utilize the work of third-party actuaries to assist in the measurement of these obligations. We have selected different discount rates for our pension plans and our other post-retirement benefit plans due to the different projected benefit payment patterns. In determining the assumed discount rates at December 31, 2014, we use our third party actuary’s discount rate model. This model calculates an equivalent single discount rate for the projected benefit plan cash flows using a hypothetical bond portfolio to match expected cash flows under our benefit plans. The bonds used are rated AA or higher by a recognized rating agency and only non-callable bonds are included with the exception of those with a “make-whole call” feature. The actuary limited the selection to those bonds with a minimum of 100,000 outstanding issues. Outlier bonds whose yields exceeded two standard deviations from the yield curve derived from similar quality bonds were excluded.

Of the assumptions used to measure the year-end obligations and estimated annual net periodic benefit cost, the discount rate has the most significant effect on the periodic benefit cost reported for the plans. Decreasing the discount rates of 4.12 percent

40

Table of Contents

for our pension plans and 4.32 percent for our other postretirement benefit plans by 0.25 would increase pension obligations and other postretirement benefit plan obligations by $9.1 million and $0.2 million, respectively, and would increase defined benefit pension expense and other postretirement benefit plan expense by $0.7 million and $0.0 million, respectively.

The asset rate of return assumption considers the asset mix of the plans (currently targeted at approximately 30 percent equity securities and 70 percent fixed income securities for the funded pension plans), past performance and other factors, including expected re-allocations of asset mix occurring within a reasonable period of time. Our asset rate of return assumption is 6.0 percent for 2015 defined benefit pension expense. Decreasing the 5.4 percent asset rate of return assumption by 0.25 would increase our defined benefit pension expense by $0.6 million.

Compensation change assumptions are based on historical experience, anticipated future management actions and demographics of the benefit plans.

Health care cost trend assumptions are developed based on historical cost data, the near-term outlook and an assessment of likely long-term trends.

Item 8. Financial Statements and Supplementary Data – Note 15 includes detailed information about the assumptions used to calculate the components of our annual defined benefit pension and other postretirement plan expense, as well as the obligations and accumulated other comprehensive loss reported on the year-end balance sheets.

Litigation and Contingencies. We record liabilities related to legal matters when an adverse outcome is probable and reasonably estimable. To the extent we anticipate favorable outcomes to these matters which ultimately result in adverse outcomes, we could incur material adverse impacts on earnings and cash flows. Because such matters require significant judgments on the part of management, the recorded liabilities could be lower than what is ultimately required. Item 8. Financial Statements and Supplementary Data – Note 20 includes information about litigation and other contingencies.

Environmental Liabilities. We are subject to federal, state, local and foreign laws and regulations and potential liabilities relating to the protection of the environment and human health and safety, including, among other things, the cleanup of contaminated sites, the treatment, storage and disposal of wastes, the discharge of effluent into waterways, the emission of substances into the air and various health and safety matters. We expect to incur substantial costs for ongoing compliance with such laws and regulations. We may also incur costs as a result of governmental or third-party claims, or otherwise incur costs, relating to cleanup of, or for injuries resulting from, contamination at sites associated with past and present operations. We accrue for environmental liabilities when a determination can be made that they are probable and reasonably estimable. Item 8. Financial Statements and Supplementary Data – Note 20 includes information about environmental liabilities.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Like other global companies, we are exposed to market risks relating to fluctuations in commodity prices, interest rates and foreign currency exchange rates. The objective of our financial risk management is to minimize the negative impact of commodity price, interest rate and foreign exchange rate fluctuations on our earnings, cash flows and equity.

To manage commodity price risk, we enter into swap contracts for future forecasted purchases of copper. This reduces the impact of commodity price volatility on gross profit. To manage the interest rate risks, we use a combination of fixed and variable rate debt. This reduces the impact of short-term fluctuations in interest rates. To manage foreign currency exchange rate risks, we use forward exchange contracts to hedge firm commitments up to twelve months and all such contracts are marked to market with the recognition of a gain or loss at each reporting period.

The following analyses present the sensitivity of the market value, earnings and cash flows of our financial instruments and foreign operations to hypothetical changes in interest and exchange rates as if these changes occurred at December 31, 2014 and 2013. The range of changes chosen for these analyses reflects our view of changes which are reasonably possible over a one-year period. Market values are the present values of projected future cash flows based on the interest rate and exchange rate assumptions. These forward-looking statements are selective in nature and only address the potential impacts from financial instruments and foreign operations. They do not include other potential effects that could impact our business as a result of these changes.

Commodity Price Sensitivity Analysis. Our exposure to market risk for changes in copper prices relates primarily to the purchase price of the raw material and the fixed price sales agreements we have with our customers. We utilize swap contracts

41

Table of Contents

to manage this price risk. As of December 31, 2014, we had outstanding coppers swap contracts totaling 19.6 million pounds and the fair value of these contracts was a loss of $6.5 million. This loss of $3.8 million, net of tax, is recognized in other comprehensive loss. Holding other variables constant, if there were a 10 percent reduction in the December 31, 2014 market price of copper, the effect on other comprehensive loss for the year ended December 31, 2014 would be $3.3 million.

Interest Rate and Debt Sensitivity Analysis. Our exposure to market risk for changes in interest rates relates primarily to our debt obligations. We have fixed and variable rate debt and the ability to incur variable rate debt under the Koppers Inc. credit agreement.

At December 31, 2014 we had $297.0 million of fixed rate debt and $553.5 million of variable rate debt and at December 31, 2013 we had $296.5 million of fixed rate debt and $6.6 million of variable rate debt. Our ratio of variable rate debt to fixed rate debt at December 31, 2014 was approximately 186 percent. For fixed rate debt, interest rate changes affect the fair market value but do not impact earnings or cash flows. For variable rate debt, interest rate changes generally do not affect the fair market value but do impact future earnings and cash flows, assuming other factors are held constant.

Holding other variables constant (such as debt levels and foreign exchange rates), a one percentage point decrease in interest rates at December 31, 2014 and 2013 would have increased the unrealized fair market value of the fixed rate debt by approximately $9.2 million and $15.9 million, respectively. The earnings and cash flows for the year ending December 31, 2014, assuming a one percentage point increase in interest rates would have decreased approximately $5.5 million, holding other variables constant for variable rate debt.

Exchange Rate Sensitivity Analysis. Our exchange rate exposures result primarily from our investment and ongoing operations in Australia, Denmark, New Zealand, Canada, the Netherlands, China and the United Kingdom. Holding other variables constant, if there were a ten percent reduction in all relevant exchange rates, the effect on our earnings, based on actual earnings from foreign operations for the years ended December 31, 2014 and 2013, would be reductions of approximately $0.5 million and $1.2 million, respectively.

42

Table of Contents

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Koppers Holdings Inc.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS