UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-K

For the fiscal year ended December 31, 20102011

OR

For the transition period fromto

O’REILLY AUTOMOTIVE, INC.

(Exact name of registrant as specified in its charter)

233 South Patterson

Springfield, Missouri 65802

(Address of principal executive offices, zip code)

(417) 862-6708

(Registrant’s telephone number, including area code)

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

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

None

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

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

Note – Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Exchange Act from their obligations under those Sections.

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 checkmark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained here, and will not be contained, to the best of the 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 checkmark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

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

At February 21, 2011,20, 2012, an aggregate of 141,128,889127,315,291 shares of the common stock of the registrant was outstanding. As of that date, the aggregate market value of the voting stock held by non-affiliates of the Company was approximately $7,797,371,117$10,764,507,854 based on the last sale price of the common stock reported by The NASDAQ Global Select Market.

At June 30, 2010,2011, an aggregate of 138,670,036135,955,214 shares of the common stock of the registrant was outstanding. As of that date, the aggregate market value of the voting stock held by non-affiliates of the Company was approximately $6,595,146,912$8,906,426,069 based on the last sale price of the common stock reported by The NASDAQ Global Select Market.

DOCUMENTS INCORPORATED BY REFERENCE

As indicated below, portions of the registrant’s documents specified below are incorporated here by reference:

O’Reilly Automotive, Inc

Form 10-K

For the Year Ended December 31, 20102011

Table of Contents

Forward Looking InformationForward-Looking Statements

We claim the protection of the safe-harbor for forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. You can identify these statements by forward-looking words such as “expect,” “believe,” “anticipate,” “should,” “plan,” “intend,” “estimate,” “project,” “will” or similar words. In addition, statements contained within this annual report that are not historical facts are forward-looking statements, such as statements discussing among other things, expected growth, store development, CSK Auto Corporation (“CSK”) Department of Justice (“DOJ”) investigation resolution, integration and expansion strategy, business strategies, future revenues and future performance. These forward-looking statements are based on estimates, projections, beliefs and assumptions and are not guarantees of future events and results. Such statements are subject to risks, uncertainties and assumptions, including, but not limited to, competition, product demand, the market for auto parts, the economy in general, inflation, consumer debt levels, governmental approvals,regulations, our increased debt levels, credit ratings on public debt, our ability to hire and retain qualified employees, risks associated with the integrationperformance of acquired businesses including the acquisition and integration ofsuch as CSK Auto Corporation, weather, terrorist activities, war and the threat of war. Actual results may materially differ from anticipated results described or implied in these forward-looking statements. Please refer to the “Risk Factors” section of this annual report on Form 10-K for the year ended December 31, 2010,2011, for additional factors that could materially affect our financial performance. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise.

PART I

IntroductionGENERAL INFORMATION

O’Reilly Automotive, Inc. and its subsidiaries, collectively “we”, “O’Reilly” or the “Company”, is one of the largest specialty retailers of automotive aftermarket parts, tools, supplies, equipment and accessories in the United States, selling our products to both do-it-yourself (“DIY”) customers and professional service providers.providers, our “dual market strategy”. O’Reilly Automotive, Inc. was incorporated in 1957 as a corporation, and was founded by Charles F. O’Reilly and his son, Charles H. “Chub” O’Reilly, Sr. and initially operated from a single store in Springfield, Missouri. The Company’sOur common stock has traded on The NASDAQ Global Select Market under the symbol “ORLY” since April 22, 1993.

On December 29, 2010, we completed a corporate reorganization creating a holding company structure, (the “Reorganization”). The Reorganizationwhich was implemented through an agreement and plan of merger under Section 351.448 of The General Corporation Law of the State of Missouri, which did not require a vote of the shareholders. As a result of the Reorganization,this reorganization, the previous parent company and registrant, O’Reilly Automotive, Inc., was renamed O’Reilly Automotive Stores, Inc. (“Old O’Reilly”) and is now a wholly ownedwholly-owned subsidiary of the new parent company and registrant, which was renamed O’Reilly Automotive, Inc. In the Reorganization, each issued and outstanding share of common stock of Old O’Reilly

On July 11, 2008, we completed our most recent acquisition, CSK Auto Corporation (“CSK”), which was converted into a share of common stockone of the Company, withlargest specialty retailers of auto parts and accessories in the same designations, rights, qualifications, powers, preferences, qualifications, limitationsWestern United States and restrictions, and without any action being required on the part of holders of shares of Old O’Reilly common stock or any exchange of stock certificates. Sharesone of the Company’s common stock were substituted forlargest such retailers in the sharesUnited States, based on store count at the date of common stockacquisition. At the date of Old O’Reilly listed onthe acquisition, CSK had 1,342 stores in 22 states, operating under four brand names: Checker Auto Parts, Schuck’s Auto Supply, Kragen Auto Parts and Murray’s Discount Auto Parts. The NASDAQ Global Select Market and continue to trade underresults of CSK’s operations have been included in our consolidated financial statements since the same “ORLY” symbol but with a new CUSIP Number (67103H 107).acquisition date.

At December 31, 2010,2011, we operated 3,5703,740 stores in 3839 states. Our stores carry an extensive product line, including the products bulletedidentified below:

Many of ourOur stores offer many enhanced services and programs to our customers, includingsuch as those bulletedidentified below:

On July 11, 2008, the Company completed the acquisition of CSK Auto Corporation (“CSK”), which was one of the largest specialty retailers of auto parts and accessories in the Western United States and one of the largest such retailers in the United States, based on

store count at the date of acquisition. To fund the transaction, we entered into a Credit Agreement (“ABL Credit Agreement”) on the acquisition date for a $1.2 billion asset-based revolving credit facility (the “Credit Facility”) arranged by Bank of America, N.A. (“BA”), which we used to refinance debt, fund the cash portion of the acquisition, pay for other transaction-related expenses and provide liquidity for the combined company going forward. The results of CSK’s operations have been included in our consolidated financial statements since the acquisition date.

At the date of the acquisition, CSK had 1,342 stores in 22 states, operating under four brand names: Checker Auto Parts, Schuck’s Auto Supply, Kragen Auto Parts and Murray’s Discount Auto Parts. This acquisition added stores in twelve new states: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Michigan, Nevada, New Mexico, Oregon, Utah and Washington, and a number of new markets in states where O’Reilly had a presence prior to the acquisition. The integration of CSK has focused on the implementation of our dual market strategy, the ability to effectively serve both DIY customers and professional service providers, which required conversion of store and distribution information systems, enhancements to the distribution infrastructure, inventory offerings and the infusion of the O’Reilly culture into the acquired CSK stores. Conversion of all CSK stores to the O’Reilly systems began in October of 2008 and concluded in November of 2010. Store décor and graphic package changeovers will be completed in all CSK stores by the end of the second quarter of 2011. In order to implement our proven dual market strategy throughout the CSK store network, we added distribution centers (“DC”) in Seattle, Washington, in November of 2009; Moreno Valley, California, in January of 2010; Denver, Colorado, in March of 2010; and Salt Lake City, Utah, in May of 2010. We also relocated an existing CSK DC in Dixon, California, to a larger DC in Stockton, California, and converted two existing CSK DCs, one in Detroit, Michigan, and one in Phoenix, Arizona, to the O’Reilly systems. As of December 31, 2010, we had converted all CSK stores to O’Reilly systems, merged 41 CSK stores with existing O’Reilly locations, closed 17 CSK stores and opened five new stores in CSK historical markets.

See “Risk Factors” beginning on page 14 for a description of certain risks relevant to our business. These risk factors include, among others, risks related to our growth strategy,deteriorating economic conditions, the integrationperformance of the acquired CSK stores, increased debt levels, our acquisition strategies, competition in the automotive aftermarket business, our dependence upon key and other personnel, future growth assurance, our sensitivity to regional economic and weather conditions, legal proceedings and related matters arising from CSK, the effect of sales of shares of our common stock eligible for future sale, unanticipated fluctuations in our quarterly results, the volatility of the market price of our common stock, our relationships with key vendors and availability of key products, a downgrade in our credit ratings, complications in our DCs, deteriorating economic conditions, downgrade in credit ratingdistribution centers (“DC”s), and environmental legislation and regulations.

Our BusinessOUR BUSINESS

Our goal is to continue to achieve growth in sales and profitability by capitalizing on our competitive advantages and executing our growth strategy. We remain confident in our ability to continue to gain market share in our existing markets and grow our business in new markets by focusing on our dual market strategy and the core O’Reilly values of customer service and expense control. Our intent is to be the dominant auto parts provider in all the markets we serve, by providing superior customer service and significant value to both DIY and professional service providers and DIYprovider customers.

Competitive Advantages

We believe our effective dual market strategy, superior customer service, strategic distribution systems and experienced management team make up our key competitive advantages that cannot be easily duplicated.

Proven Ability to Execute a Dual Market StrategyStrategy: - We

Over the past 30 years, we have an established a track record of effectively serving, at a high level, both DIY customers and professional service providers. We believe our proven ability to effectively execute a dual market strategy is a unique competitive advantage. The execution of this strategy enables us to better compete by targeting a larger base of consumers of automotive aftermarket parts, by capitalizing on our existing retail and distribution infrastructure, by operating profitably in both large markets and less densely populated geographic areas that typically attract fewer competitors, as well as byand enhancing service levels offered to DIY customers through the offering of a broad inventory and the extensive product knowledge required by professional service providers.

We have been committed to our dual market strategy for over 30 years. In 2010,2011, we derived approximately 62%59% of our sales from our DIY customers and approximately 38%41% of our sales from our professional service provider customers. We have historicallyPrior to the acquisition of CSK, we derived approximately 50% of our sales from both our DIY and professional service provider customers, and ascustomers. As we continue to grow our commercial business in the acquired CSK stores,markets, we would expect that over time our DIY and professional service provider sales mix to approximate historical averages. As a result of our historical success of executing our dual market strategy and our over 450460 full-time sales staff dedicated solely to calling upon and servicing the professional service provider, we believe we will continue to increase our sales to professional service providers and will continue to have a competitive advantage over our retail competitors who continue to derive a high concentration of their sales from the DIY market. We have a tremendous opportunity to build on the strong retail base at the acquired CSK stores by growing the commercial business through the implementation of our dual market strategy and capitalizing on our other competitive advantages.

Superior Customer ServiceService: -

We seek to attract new DIY and professional service provider customers and to retain existing customers by offering superior customer service, the key elements of which are bulletedidentified below:

Technically Proficient Professional Parts PeoplePeople: -

Our highly proficienthighly-motivated, technically-proficient Professional Parts People provide us with a significant competitive advantage, particularly over less specialized retail operators. We require our Professional Parts People to undergo extensive and ongoing training and to be technically knowledgeable, particularly with respect to hard parts, in order to better serve the technically-oriented professional service providers with whom they interact on a daily basis. Such technical proficiency also enhances the customer service we provide to our DIY customers who value the expert assistance provided by our Professional Parts People.

Strategic Distribution SystemsSystems: -

We believe our commitment to a robust, regional DC network provides for superior replenishment and access to hard-to-find parts and enables us to optimize product availability and inventory levels throughout our store network. Our inventory management and distribution systems electronically link each of our stores to one or more DCs, providingwhich provides for efficient inventory control and management. Our distribution system provides each ofWe currently operate 23 regional DCs, which provide our stores with same-day or overnight access to an average of 118,000123,000 stock keeping units (“SKUs”)SKU”s), many of which are hard to findhard-to-find items not typically stocked by other auto parts retailers. We believe this timely access to a broad range of products is a key competitive advantage in satisfying customer demand and generating repeat business.

We currently operate 23 DCs, four of which opened in 2010. As these DCs opened, the surrounding CSK stores were converted to the O’Reilly systems and began receiving same-day or overnight access to O’Reilly’s broad range of hard part product offerings.

Experienced Management TeamTeam: -

Our Company philosophy is to “promote from with-in” and the vast majority of our senior management, district managers and store managers have been promoted from with-in the Company. We augment this promote from with-in philosophy by pursuing strategic hires with a strong emphasis on automotive aftermarket experience. We have a strong management team comprised of senior management with 148 professionals who average 17 years of service; 266 corporate managers who average 13 years of service; and 355 district managers who average 12 years of service. Our management team has demonstrated the consistent ability to successfully execute our business plan including the identification and integration of strategic acquisitions. We have experienced eighteengrowth strategy by generating nineteen consecutive years of record revenues and earnings and positive comparable store sales results since becoming a public company in April of 1993. We have a strong senior management team comprised of 146 professionals who average 18 years of service. In addition, our 260 corporate managers average 15 years of service and our 349 district managers average 13 years of service.

Growth Strategy

Aggressively Open New StoresStores: -

We intend to continue to consolidate the fragmented automotive aftermarket. We plan to open approximately 180 new stores to achieve greaterin 2012 increasing our penetration in existing markets and to expandexpanding into new, contiguous markets. We plan to open approximately 170 net new stores in 2011, and theThe sites for these new stores have been identified. Toidentified, and to date, we have not experienced significant difficulties in locating suitable sites for construction of new stores or identifying suitable acquisition targets for conversion to O’Reilly stores. We typically open new stores either by (i) constructing a new facility or renovating an existing one on property we purchase or lease and stocking the new store with fixtures and inventory, (ii) acquiring an independently owned auto parts store, typically by the purchase of substantially all of the inventory and other assets (other than realty) of such store, or (iii) purchasing multi-store chains. New store sites are strategically located in clusters within geographic areas that complement our distribution network in order to achieve economies of scale in management, advertising and distribution. Other key factors we consider in the site selection process include population density and growth patterns, demographic lifestyle segmentation, age and per capita income, vehicle traffic counts, number and type of existing automotive repair facilities, competing auto parts stores within a pre-determined radius, and the operational strength of such competitors.

We target both small and large markets for expansion of our store network. While we have faced, and expect to continue to face, aggressive competition in the more densely populated markets, we believe we have competed effectively, and are well positioned to continue to compete effectively, in such markets and to achieve our goal of continued sales/profit growth within these markets. We also believe that with our dual market strategy, we are better able to operate stores in less densely populated areas, which would not otherwise support a national chain store selling primarily to the retail automotive aftermarket. Consequently, we continue to pursue opening new stores in less densely populated market areas as part of our growth strategy.

Grow Sales in Existing Stores:

Profitable same store sales growth is also an important part of our growth strategy. To achieve improved sales and profitability at existing O’Reilly stores, we continually strive to improve the service provided to our customers. We believe that while competitive pricing is an essential component of successful growth in the automotive aftermarket business, it is customer satisfaction, whether of the DIY consumer or professional service provider, resulting from superior customer service that generates increased sales and profitability.

Selectively Pursue Strategic AcquisitionsAcquisitions: -

Although the automotive aftermarket industry is still highly fragmented, we believe the ability of national retail chains, such as ourselves, to operate more efficiently than smaller independent operators or mass merchandisers will result in continued industry consolidation. Thus, our intention is to continue to selectively pursue acquisition targets that will strengthen our position as a leading automotive aftermarket parts supplier.supplier in existing markets and provide a springboard into new markets.

Continually Enhance Store Design and LocationLocation: -

Our current prototype store design features enhancements such as optimized square footage, higher ceilings, more convenient interior store layouts, improved in-store signage, brighter lighting, increased parking availability and dedicated counters to serve professional service providers, each designed to increase sales and operating efficiencies and enhance customer service. We continually update the location and condition of our store network through systematic renovation and relocation of our existing stores to enhance store performance. We believe that our ability to consistently achieve growth in same store sales is due in part to our commitment to maintaining an attractive store network, which is strategically located to best serve our customers.

Grow Professional Relationships with Professional Service Providers in the Western United StatesStates: -

In order to implement our proven dual market strategy throughout the acquired CSK store network and grow our share of the professional service provider market in those areas, we have added four additional DCs to the Western markets since the CSK acquisition. Our strategically located DCs provide converted CSK stores with same-day or overnight delivery access to an average of 118,000123,000 SKUs and will give these stores an important tool to provide industry-leading customer service to the professional service provider, as well as the DIY customer. In addition, our Professional Parts People receive ongoing training on our product lines, customer service and O’Reilly policies and procedures aimed at building and improving relationships with professional service providers.

The steps we have taken to implement our dual market strategy in the acquired CSK stores have allowed us to begin to capture market share in the Western United States. However, we continue to see significant opportunities to grow our share of the professional service provider business. This growth will be driven by our ability to consistently provide superior customer service and parts availability, proving O’Reilly as a reliable partner and elevating our status as the preferred supplier on the call lists of professional service providers.

Team Members

As of January 31, 2012, we employed 49,148 Team Members (32,700 full-time Team Members and 16,448 part-time Team Members), of whom 41,693 were employed at our stores, 5,917 were employed at our DCs and 1,538 were employed at our corporate and regional offices. A union represents 49 stores (459 Team Members) in the Greater Bay Area in California, and has for many years. In addition, approximately 75 Team Members who drive over-the-road trucks in two of our DCs are represented by a labor union. Except for these Team Members, our Team Members are not represented by labor unions. Our tradition of 55 years has been to treat all of our Team Members with honesty and respect and to commit significant resources to instill in them our “Live Green” Culture, which emphasizes the importance of each Team Member’s contribution to the success of O’Reilly. This focus on professionalism and fairness has created an industry-leading team and we consider our relations with our Team Members to be excellent.

Store Network

Store Locations and Size:

As a result of our dual market strategy, we are able to profitably operate in both large, densely populated markets and small, less densely populated areas that would not otherwise support a national chain selling primarily to the retail automotive aftermarket. Our stores, on average, carry approximately 21,000 SKUs and average approximately 7,100 total square feet in size. At December 31, 2011, we had a total of approximately 27 million square feet in our 3,740 stores. Our stores are served primarily by the nearest DC, which averages 123,000 SKUs, but also have same-day access to the broad selection of inventory available at one of our 192 Hub stores, which, on average, carry approximately 39,000 SKUs and average approximately 10,000 square feet in size.

We believe that our stores are “destination stores” generating their own traffic rather than relying on traffic created by the presence of other stores in the immediate vicinity. Consequently, most of our stores are freestanding buildings and prominent end caps situated on or near major traffic thoroughfares, and offer ample parking, easy customer access and are generally located in close proximity to our professional service provider customers.

The following table sets forth the geographic distribution and activity of our stores as of December 31, 2011 and 2010:

Store Layout:

We utilize a computer-assisted store layout system to provide a uniform and consistent retail merchandise presentation and customize our hard-parts inventory assortment to meet the specific needs of a particular market area. Front room merchandise is arranged to provide easy customer access, maximum selling space and to prominently display high-turnover products and accessories to customers. To ensure the best customer experience possible, we have selectively implemented bilingual in-store signage based on the demographics in each store’s geographic area. Aisle displays and end caps are used to feature high-demand or seasonal merchandise, new items and advertised specials.

Store Automation:

To enhance store-level operations, customer service and reliability, we use Linux servers and IBM I-Series computer systems in our stores. These systems are linked with the I-Series computers located in each of our DCs. Our point-of-sale terminals provide immediate access to our electronic catalog to graphically display parts and pricing information by make, model and year of vehicle and use barcode scanning technology to price our merchandise. This system speeds transaction times, reduces the customer’s checkout time, ensures accuracy and provides enhanced customer service. Moreover, our store automation systems capture detailed sales information which assists in store management, strategic planning, inventory control and distribution efficiency.

New Store Site Selection:

In selecting sites for new stores, we seek to strategically locate store sites in clusters within geographic areas in order to achieve economies of scale in management, advertising and distribution. Other key factors we consider in the site selection process are identified below:

When entering new, more densely populated markets, we generally seek to initially open several stores within a short span of time in order to maximize the effect of initial promotional programs and achieve economies of scale. After opening this initial cluster of new stores, we seek to begin penetrating the less densely populated surrounding areas. This strategy enables us to achieve additional distribution and advertising efficiencies in each market.

Management Structure

Each of our stores is staffed with a store manager and one or more assistant managers, in addition to parts specialists, retail and/or installer service specialists and other positions required to meet the specific needs of each store. Each of our 349355 district managers has general supervisory responsibility for an average of 10 stores, which provides our stores with the appropriate amount of operational support.

District managers complete a comprehensive training program to ensure each has a thorough understanding of customer service, leadership, inventory management and store profitability, as well as all other sales and operational aspects of our business model. Store managers are also required to complete a structured training program that is specific to their position, including attending a 40-hour manager development program at the corporate headquarters in Springfield, Missouri. District managers and store managers also receive continuous training through on-line assignments, field workshops and regional meetings.

We provide financial incentives to our district managers and all store team membersTeam Members through incentive compensation programs. Under our incentive compensation programs, base salary is augmented by incentive compensation based upon their individual and/or store’s sales and profitability. In addition, each of our district and store managers participates in the Company’sour stock option program. We believe that our incentive compensation programs significantly increase the motivation and overall performance of our district and store team membersTeam Members and enhance our ability to attract and retain qualified management and other personnel.

Most of our current senior management, district managers and store managers were promoted to their positions from within the Company. Our senior management team averages 18 years of service, corporate management team averages 15 years of service and our district management team has an average length of service of 13 years.

Team Members

As of January 31, 2011, we employed 47,142 total team members (31,070 full-time team members and 16,072 part-time team members), of whom 39,556 were employed at our stores, 6,053 were employed at our DCs and 1,533 were employed at our corporate and regional offices. A union represents 51 stores (435 team members) in the Greater Bay Area in California, and has for many years. In addition, approximately 66 team members who drive over-the-road trucks in two of our DCs have voted in favor of becoming represented by labor unions; however, no collective bargaining agreements have been negotiated. Except for these team members, our team members are not represented by labor unions. Our tradition of 54 years has been to treat all of our team members with honesty and respect and to commit significant resources to instill in them our “Live Green” Culture, which emphasizes the importance of every team member’s contribution to the success of O’Reilly. This focus on professionalism and fairness has created an industry-leading team and we consider our relations with our team members to be excellent.

Inflation and Seasonality

We have been successful, in many cases, in reducing the effects of merchandise cost increases principally by taking advantage of vendor incentive programs, economies of scale resulting from increased volume of purchases and selective forward buying. To the extent our acquisition cost increases due to base commodity price increases industry-wide, we have typically been able to pass along these increased costs through higher retail prices for the affected products. As a result, we do not believe our operations have been materially, adversely affected by inflation.

To some extent, our business is seasonal primarily as a result of the impact of weather conditions on customer buying patterns. Store sales and profits have historically been higher in the second and third quarters (April through September) than in the first and fourth quarters (October through March) of the year.

Regulations

We are subject to various federal, state and local laws and governmental regulations relating to our business, including those related to the handling, storage and disposal of hazardous substances, the recycling of batteries and used lubricants, and the ownership and operation of real property.

As part of our operations, we handle hazardous materials in the ordinary course of business and our customers may bring hazardous materials onto our property in connection with, for example, our oil and battery recycling programs. We currently provide a recycling program for batteries and the collection of used lubricants at certain stores of ours as a service to our customers pursuant to agreements with third-party vendors. The batteries and used lubricants are collected by our associates, deposited into vendor-supplied containers and pallets, and then disposed of by the third-party vendors. In general, our agreements with such vendors contain provisions that are designed to limit our potential liability under applicable environmental regulations for any damage or contamination, which may be caused by the batteries and lubricants to off-site properties (including as a result of waste disposal) and to our properties, when caused by the vendor.

Compliance with any such laws and regulations has not had a material adverse effect on our operations to date. We cannot give any assurance, however, that we will not incur significant expenses in the future in order to comply with any such law or regulation.

Available Information

Our Internet address is www.oreillyauto.com. Interested readers can access, free of charge, the Company’s annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, through the Securities and Exchange Commission website atwww.sec.gov and searching with our ticker symbol “ORLY”. Such reports are generally available the day they are filed. Upon request, the Company will furnish interested readers a paper copy of such reports free of charge by contacting Thomas McFall, Executive Vice President of Finance and Chief Financial Officer, at 233 South Patterson, Springfield, Missouri, 65802.

Store Operations

Store Network

Store Locations - As a result of our dual market strategy, we are able to profitably operate in both large, densely populated markets and small, less densely populated areas that would not otherwise support a national chain selling primarily to the retail automotive aftermarket. The following table sets forth the geographic distribution of our stores:

Our stores, on average, carry approximately 22,000 SKUs and average approximately 7,100 total square feet in size. At December 31, 2010, we had a total of approximately 25.3 million square feet in our 3,570 stores. Our stores are served primarily by the nearest DC, which averages 118,000 SKUs, but also have same-day access to the broad selection of inventory available at one of our 184 Master Inventory Stores, which on average carry approximately 39,000 SKUs and average approximately 10,000 square feet in size. In addition to serving DIY and professional service provider customers in their markets, Master Inventory Stores also provide our other stores within the surrounding area access to a greater selection of SKUs on a same-day basis.

We believe that our stores are “destination stores” generating their own traffic rather than relying on traffic created by the presence of other stores in the immediate vicinity. Consequently, most of our stores are freestanding buildings and prominent end caps situated on or near major traffic thoroughfares, and offer ample parking, easy customer access and are generally located in close proximity to our professional service provider customers.

Store Layout - We utilize a computer-assisted “plan-o-grammed” store layout system to provide a uniform and consistent merchandise presentation; however, each store’s hard-parts inventory assortment is customized to meet the specific needs of a particular market area. Front room merchandise is arranged to provide easy customer access, maximum selling space and to prominently display high-turnover products and accessories to customers. To ensure the best customer experience possible, we have selectively implemented bilingual in-store signage based on the demographics in each store’s geographic area. Aisle displays and end caps are used to feature high-demand or seasonal merchandise, new items and advertised specials.

Store Automation - To enhance store-level operations, customer service and reliability, we use Linux servers and IBM I-Series computer systems in our stores. These systems are linked with the I-Series computers located in each of our DCs. Our point-of-sale terminals provide immediate access to our electronic catalog to graphically display parts and pricing information by make, model and year of vehicle and use bar code scanning technology to price our merchandise. This system speeds transaction times, reduces the customer’s checkout time, ensures accuracy and provides enhanced customer service. Moreover, our store automation systems capture detailed sales information which assists in store management, strategic planning, inventory control and distribution efficiency.

New Store Site Selection - In selecting sites for new stores, we seek to strategically locate store sites in clusters within geographic areas in order to achieve economies of scale in management, advertising and distribution. Other key factors we consider in the site selection process are bulleted below:

When entering new, more densely populated markets, we generally seek to initially open several stores within a short span of time in order to maximize the effect of initial promotional programs and achieve economies of scale. After opening this initial cluster of new stores, we seek to begin penetrating the less densely populated surrounding areas. This strategy enables us to achieve additional distribution and advertising efficiencies in each market.

Products and Purchasing

Our stores offer DIY and professional service provider customers a wide selection of brand name and private label products for domestic and imported automobiles, vans and trucks. We do not sell tires or perform automotive repairs or installations. Our merchandise generally consists of nationally recognized, well-advertised, premium name brand products such as AC Delco, Armor All, Bosch, BWD, Cardone, Castrol, Gates Rubber, Monroe, Moog, Pennzoil, Prestone, Quaker State, STP, Turtle Wax, Valvoline, Wagner, and Wix. In addition to name brand products, our stores carry a wide variety of high-quality private label products under our BestTest®, BrakeBest®, Master Pro®, Micro-Gard®, Murray and Omnispark®, O’Reilly Auto Parts®, Power Torque®, Super Start®, and Ultima® proprietary name brands. Our private label products are produced by nationally recognized manufacturers and meet or exceed original equipment manufacturer specifications and provide a great combination of quality and value – a characteristic important to our DIY customers. We have added O’Reilly branded chemicals and commodities as well as proprietary private label products to all acquired CSK stores. These stores have also undergone hard-part resets, which significantly increased their hard-part SKU offering, giving our customers in all stores a good, better, and best product offering.

We purchase automotive products in substantial quantities from over 500 vendors, the five largest of which accounted for approximately 22% of our total purchases in 2010. Our largest vendor in 2010 accounted for approximately seven percent of our total purchases and the next four largest vendors each accounted for approximately three to five percent of such purchases. We have no

long-term contractual purchase commitments with any of our vendors, nor have we experienced difficulty in obtaining satisfactory alternative supply sources for automotive parts. We believe that alternative supply sources exist at substantially similar costs, for substantially all of the automotive products that we sell. It is our policy to take advantage of payment and seasonal purchasing discounts offered by our vendors and to utilize extended dating terms available from vendors. During 2010, we entered into various programs and arrangements with certain vendors that provided for extended dating and payment terms for inventory purchases. As a whole, we consider our relationships with our vendors to be very good.

Pricing

We believe that a competitive pricing policy is essential to successfully operate in the automotive aftermarket business. Product pricing is generally established to compete with the pricing policies of competitors in the market area served by each store. Most automotive products that we sell are priced based upon a combination of competitor price comparisons and internal gross margin targets and are generally sold at a discount to the manufacturer’s suggested retail price with additional savings offered through volume discounts and special promotional pricing. Consistent with our low price guarantee, each of our stores will match any verifiable price on any in-stock product of the same or comparable quality offered by our competitors in the same market area.

We have repositioned the product offering and pricing in all CSK stores to an every-day low price strategy to ensure we are competitive in every market. We believe competitive pricing is needed to grow our market share and maintain a customer’s repeat business, and we believe strongly that this strategy is more sustainable, requires less promotional spending and will produce better results than CSK’s historical promotional-based, high-low pricing strategy.

Professional Parts People

We believe our highly trained team of Professional Parts People is essential in providing superior customer service to both DIY and professional service provider customers. Because a significant portion of our business is from professional service providers, our Professional Parts People are required to be technically proficient in automotive products. In addition, we have found that the typical

DIY customer often seeks assistance from a Professional Parts Person, particularly when purchasing hard parts. The ability of our Professional Parts People to provide such assistance to the DIY customer creates a favorable impression and is a significant factor in generating repeat DIY business.

We screen prospective team membersTeam Members to identify highly motivated individuals who either have experience with automotive parts or repairs, or automotive aptitude. New store team membersTeam Members go through a comprehensive orientation about the culture of our companyCompany as well as the requirements for their specific job position. Additionally, during their first year of employment, our parts specialists go through extensive automotive systems and product knowledge training to ensure they are able to provide the highest level of service to our customers. Once all of the required training has been satisfied, our parts specialists become eligible to take the O’Reilly Certified Parts Professional test. Passing the O’Reilly test helps prepare them to become certified by the National Institute for Automotive Service Excellence (ASE).

All of our stores have the ability to service professional service provider customers. For this reason, select team membersTeam Members in each store complete extensive sales call training with their regional field sales manager. Afterward, these team membersTeam Members spend one day per week calling on existing and potential professional service provider customers. Additionally, each team memberTeam Member engaged in such sales activities participates in quarterly advanced training programs for sales and business development.

Customer Service

We seek to provide our customers with an efficient and pleasant in-store experience by maintaining attractive stores in convenient locations with a wide selection of automotive products. We believe that the satisfaction of DIY and professional service provider customers is substantially dependent upon our ability to provide, in a timely fashion, the specific automotive products requested. Accordingly, each O’Reilly store carries a broad selection of automotive products designed to cover a wide range of vehicle applications. We continuously refine the inventory levels and assortments carried in our stores, based in large part on the sales movement tracked by our inventory control system, market vehicle registration data, failure rates and management’s assessment of the changes and trends in the marketplace. We have no material backlog of orders for the products we sell.

Marketing

Marketing to the DIY Customer - We use an integrated marketing program, which includes television, radio, direct mail and newspaper distribution, in-store andOur online promotions, and sports and event sponsorships, to aggressively attract DIY customers. The marketing strategy we employ is highly effective and has led to an increase in awareness of the O’Reilly brand across our geographic footprint. We utilize a combination of brand and product/price messaging to drive retail traffic and purchases, which frequently coincide with key sales events. During 2010, we continued to co-brand all forms of advertising in the markets containing acquired CSK stores. This manner of advertising and marketing is essential to not only build awareness of the O’Reilly brand in those markets,

but to also allow for a smoother transition throughout the rebranding process. Store signage in substantially all acquired CSK stores is expected to be changed to the O’Reilly Brand by the end of the first quarter of 2011, and we expect to end the co-branding of all forms of advertising during 2011.

To stimulate sales among race enthusiasts, who we believe individually spend more on automotive products than the general public, during 2010 we sponsored multiple nationally-televised races and over 1,500 grassroots, local, and regional motorsports events throughout 38 states. We maintained our partnership with the National Association for Stock Car Racing (“NASCAR”) as the Official Auto Parts Store of NASCAR and were the title sponsor of five National Hot Rod Association (“NHRA”) races from Pomona, California to Charlotte, North Carolina.

During the fall and winter months, we strategically sponsor National Collegiate Athletic Association (“NCAA”) football and basketball and the National Football League (“NFL”). Our relationships with over 70 NCAA teams and tournaments have resulted in prominently-displayed O’Reilly logos on TV-visible scoring table signs throughout the season. In addition, O’Reilly Auto Parts radio advertising can be heard during more than 350 NFL games dueordering service provides enhanced customer service capabilities to our sponsorship of nearly 20 teams.

Through an expanded use of Spanish language radio, print, and outdoor, as well as sponsorships of over 45 local and regional festivals and events, we demonstrated our commitment to increasing marketing efforts that are targeted toward the Hispanic auto parts consumer.

In 2010, we continued our dedicated problem/solution communication strategy, which encourages vehicle owners to perform regular maintenance as a way to save money and protect their automotive investment over the long term. This highly relevant message resonates with consumers and establishes O’Reilly as their source for the parts they need and excellent customer service.

Marketing to the Professional Service Provider - We have over 450 full-time O’Reilly sales representatives strategically located across our market areas. Each sales representative is dedicated solely to calling upon, selling to and servicing our professional service provider customers. Targeted marketing materials such as flyers, quick reference guides and catalogs are produced and distributed on a regular basis to professional service providers, paint and body shops and fleet customers. Our industry leading First Call program enables our sales representatives, district managers, and store managers to provide excellent customer service to each of our professional service provider accounts by providing the products and services bulleted below:

Marketing to the Independently Owned Parts Store - Along with the daily operation and management of the DCs and the distribution of automotive products to our stores, Ozark Automotive Distributors, Inc., our wholly owned subsidiary (“Ozark”), also sells automotive products directly to independently owned parts stores (“jobber stores”) throughout our trade areas. These jobber stores are generally located in areas not directly serviced by an O’Reilly store. Ozark administers a dedicated and distinct marketing program specifically targeted to jobber stores.

Approximately 185 jobber stores currently purchase automotive products from Ozark and participate in our Parts City Auto Parts program, our proprietary jobber service program. As a participant in these programs, a jobber store, which meets certain financial and operational standards, is permitted to indicate its Parts City Auto Parts membership through the display of the respective logo that is owned by Ozark. In return for a commitment to purchase automotive products from Ozark, we provide computer software for business management, competitive pricing, advertising, marketing and sales assistance to Parts City Auto Parts affiliate stores.

Competition

We compete in both the DIY and professional service provider portions of the automotive aftermarket. We compete primarily with the stores bulleted below:

We compete on the basis of customer service, which includes merchandise selection and availability, price, helpfulness of store personnel, store layout and convenient and accessible store locations.

Distribution System Support

We currently operate 23 DCs comprised of approximately 8.5 million operating square feet (see the “Properties” table in Item 2 of this Form 10-Kavailable for a detailed listing of DC operating square footages). Our DCs are equipped with highly automated material handling equipment, which efficiently expedite the movement of our products from the shelves to the loading areas for shipment to each of our stores on a nightly basis. The DCs utilize technology to electronically receive orders from computers located in each of our stores. In addition to the bar code system employedpick up in our stores, each of our stores is connected through secured data transmission technology to our DCs and corporate headquarters.local store.

Distribution Systems

We believe that our tiered distribution systemmodel provides industry-leading parts availability and store in-stock positions, while lowering our inventory carrying costs and controlling inventory. Moreover, we believe that our ongoing, significant capital investments made to expand the network of DCs allows us to efficiently service new stores that are planned to open in contiguous market areas as well as servicing our existing store network. Our DCdistribution expansion strategy complements our new store opening strategy by supporting newly established clusters of stores located in the regions surrounding each DC. We currently have a total growth capacity of approximately 650500 stores in our distribution network.

Distribution Centers:

We currently operate 23 DCs comprised of approximately 8.5 million operating square feet (see the “Properties” table in Item 2 of this Form 10-K for a detailed listing of DC operating square footages). Our DCs utilize technology to electronically receive orders from computers located in each of our stores. Our DCs stock an average of 123,000 SKUs and most DCs are linked to multiple other regional DCs’ inventory. Our DCs provide five-night-a-week delivery, primarily via a Company-owned fleet, to all of our stores in the continental United States. In addition, stores within a DC metropolitan area receive multiple daily deliveries from our DC “city counters”, many of which receive this service seven days per week.

As part of our continuing efforts to enhance our distribution network in 20112012 we plan to:

Executive OfficersMaster Inventory “Hub” Stores:

We currently operate 192 strategically placed Master Inventory “Hub” stores. In addition to serving DIY and professional service provider customers in their markets, Hub stores also provide our other stores within the surrounding area access to an expanded selection of SKUs on a same-day basis. Our Hub stores average approximately 3,000 square feet more than our typical stores and carry an average of 18,000 SKUs more than our typical stores.

Products and Purchasing

Our stores offer DIY and professional service provider customers a wide selection of brand name and private label products for domestic and imported automobiles, vans and trucks. Our merchandise generally consists of nationally recognized, well-advertised, premium name brand products such as AC Delco, Armor All, Bosch, BWD, Cardone, Castrol, Gates Rubber, Monroe, Moog, Pennzoil, Prestone, Quaker State, STP, Turtle Wax, Valvoline, Wagner, and Wix. In addition to name brand products, our stores carry a wide variety of high-quality private label products under our BestTest^®, BrakeBest^®, Master Pro^®, Micro-Gard^®, Murray^®, Omnispark^®, O’Reilly Auto Parts^®, Power Torque^®, Super Start^®, and Ultima^® proprietary name brands. Our private label products are produced by nationally recognized manufacturers and meet or exceed original equipment manufacturer specifications and provide a great combination of quality and value – a characteristic important to our DIY customers. We have added O’Reilly branded chemicals and commodities as well as proprietary private label products to all acquired CSK stores. These stores have also undergone hard-part resets, which significantly increased their hard-part SKU offering, giving our customers in all stores a good, better, and best product offering.

We have no long-term contractual purchase commitments with any of our vendors, nor have we experienced difficulty in obtaining satisfactory alternative supply sources for automotive parts. We believe that alternative supply sources exist at substantially similar costs, for substantially all of the Registrantautomotive products that we sell. It is our policy to take advantage of payment and seasonal purchasing discounts offered by our vendors and to utilize extended dating terms available from vendors. During 2011, we entered into various programs and arrangements with certain vendors that provided for extended dating and payment terms for inventory purchases. As a whole, we consider our relationships with our vendors to be very good.

We purchase automotive products in substantial quantities from over 500 vendors, the five largest of which accounted for approximately 21% of our total purchases in 2011. Our largest vendor in 2011 accounted for approximately 6% of our total purchases and the next four largest vendors each accounted for approximately 3% to 6% of such purchases.

Marketing

Marketing to the DIY Customer:

We use an integrated marketing program, which includes television, radio, direct mail and newspaper distribution, in-store and online promotions, and sports and event sponsorships to aggressively attract DIY customers. The marketing strategy we employ is highly effective and has led to a measurable increase in awareness of the O’Reilly Brand across our geographic footprint. We utilize a combination of brand and product/price messaging to drive retail traffic and purchases, which frequently coincide with key sales events. We continued to co-brand all forms of advertising in the markets containing acquired CSK stores during the first half of 2011. This manner of advertising and marketing was essential to not only build awareness of the O’Reilly Brand in those markets, but to also allow for a smoother transition throughout the entire rebranding process. Store signage of all acquired CSK stores was changed to the O’Reilly Brand during 2011, at which time co-branding ended and all forms of advertising promoted the O’Reilly Brand in all our markets.

To stimulate sales among racing enthusiasts, who we believe individually spend more on automotive products than the general public, we sponsored multiple nationally-televised races and over 1,500 grassroots, local, and regional motorsports events throughout 38 states during 2011. We maintained our partnership with the National Association for Stock Car Racing (“NASCAR”) as the Official Auto Parts Store of NASCAR and were the title sponsor of five National Hot Rod Association (“NHRA”) races from Pomona, California to Charlotte, North Carolina.

During the fall and winter months, we strategically sponsor National Collegiate Athletic Association (“NCAA”) basketball and the National Football League (“NFL”). Our relationships with over 50 NCAA teams and tournaments have resulted in prominently-displayed O’Reilly logos on TV-visible scoring table signs throughout the season.

Through an expanded use of Spanish language radio, print, and outdoor, as well as sponsorships of over 45 local and regional festivals and events, we demonstrated our commitment to increasing marketing efforts that are targeted toward the Hispanic auto parts consumer.

In 2011, we continued our dedicated problem/solution communication strategy, which encourages vehicle owners to perform regular maintenance as a way to save money and protect their automotive investment over the long-term. This highly relevant message resonates with consumers and establishes O’Reilly as their source for the parts they need and excellent customer service.

Marketing to the Professional Service Provider Customer:

We have over 460 full-time O’Reilly sales representatives strategically located across our market areas as part of our First Call^® program. Each sales representative is dedicated solely to calling upon, selling to and servicing our professional service provider customers. Targeted marketing materials such as flyers, quick reference guides and catalogs are produced and distributed on a regular basis to professional service providers, paint and body shops and fleet customers. Our industry-leading First Call program enables our sales representatives, district managers, and store managers to provide excellent customer service to each of our professional service provider accounts by providing the products and services identified below:

Marketing to the Independently Owned Parts Store:

Along with the daily operation and management of the DCs and the distribution of automotive products to our stores, Ozark Automotive Distributors, Inc., our wholly owned subsidiary (“Ozark”), also sells automotive products directly to independently owned parts stores (“jobber stores”) throughout our trade areas. These jobber stores are generally located in areas not directly serviced by an O’Reilly store. Ozark administers a dedicated and distinct marketing program specifically targeted to jobber stores.

Approximately 190 jobber stores currently purchase automotive products from Ozark and participate in our Parts City Auto Parts program, our proprietary jobber service program. As a participant in these programs, a jobber store, which meets certain financial and operational standards, is permitted to indicate its Parts City Auto Parts membership through the display of the respective logo that is owned by Ozark. In return for a commitment to purchase automotive products from Ozark, we provide computer software for business management, competitive pricing, advertising, marketing and sales assistance to Parts City Auto Parts affiliate stores.

Pricing

We believe that a competitive pricing policy is essential to successfully operate in the automotive aftermarket business. Product pricing is generally established to compete with the pricing policies of competitors in the market area served by each store. Most automotive products that we sell are priced based upon a combination of competitor price comparisons and internal gross margin targets and are generally sold at a discount to the manufacturer’s suggested retail price with additional savings offered through volume discounts and special promotional pricing. Consistent with our low price guarantee, each of our stores will match any verifiable price on any in-stock product of the same or comparable quality offered by our competitors in the same market area.

We have repositioned the product offering and pricing in all acquired CSK stores to an every-day low price strategy to ensure we are competitive in every market in which we operate. We believe competitive pricing is needed to grow our market share and maintain a customer’s repeat business, and we believe strongly that this strategy is more sustainable, requires less promotional spending and will produce better results than CSK’s historical promotional-based, high/low pricing strategy.

Customer Payments and Returns Policy

Our stores accept cash, checks, debit and credit cards. We also grant credit to many professional service provider customers who meet our pre-established credit requirements. Some of the factors considered in our pre-established credit requirements include customer creditworthiness, past transaction history with the customer, current economic and industry trends and changes in customer payment terms. No customer accounted for ten percent or more of our consolidated net sales, nor do we have any dependence on any single customer.

We accept product returns for new products, core products and warranty/defective products.

INDUSTRY ENVIRONMENT

The automotive aftermarket industry includes all products and services purchased for light- and heavy-duty vehicles after the original sale. The total size of the automotive aftermarket is estimated to be $215 billion, according to the Automotive Aftermarket Industry Association (“AAIA”). This market is made up of four segments – labor share of professional service provider sales, auto parts share of professional service provider sales, DIY sales and tire sales. O’Reilly’s addressable market within this industry includes the auto parts share of professional service provider sales and DIY sales. We do not sell tires or perform automotive repairs or installations.

Competition

We compete in both the DIY and professional service provider portions of the automotive aftermarket and are one of the largest specialty retailers within that market. We compete primarily with the stores identified below:

We compete on the basis of customer service, which includes merchandise selection and availability, technical proficiency and helpfulness of store personnel, price, store layout and convenient and accessible store locations. Our dual market strategy requires significant capital expenditures to support, such as the capital expenditures required for the distribution network, store network and inventory levels necessary for providing products to both the DIY and professional service provider portions of the automotive aftermarket.

Inflation and Seasonality

We have been successful, in many cases, in reducing the effects of merchandise cost increases principally by taking advantage of vendor incentive programs, economies of scale resulting from increased volume of purchases and selective forward buying. To the extent our acquisition cost increases due to base commodity price increases industry wide, we have typically been able to pass along these increased costs through higher retail prices for the affected products. As a result, we do not believe our operations have been materially, adversely affected by inflation.

To some extent our business is seasonal, primarily as a result of the impact of weather conditions on customer buying patterns. Store sales, profits and inventory levels have historically been higher in the second and third quarters (April through September) than in the first and fourth quarters (October through March) of the year.

Regulations

We are subject to various federal, state and local laws and governmental regulations relating to our business, including those related to the handling, storage and disposal of hazardous substances, the recycling of batteries and used lubricants, and the ownership and operation of real property.

As part of our operations, we handle hazardous materials in the ordinary course of business and our customers may bring hazardous materials onto our property in connection with, for example, our oil and battery recycling programs. We currently provide a recycling program for batteries and the collection of used lubricants at certain of our stores as a service to our customers pursuant to agreements with third-party vendors. The batteries and used lubricants are collected by our associates, deposited into vendor-supplied containers and pallets, and then disposed of by the third-party vendors. In general, our agreements with such vendors contain provisions that are designed to limit our potential liability under applicable environmental regulations for any damage or contamination, which may be caused by the batteries and lubricants to off-site properties (including as a result of waste disposal) and to our properties, when caused by the vendor.

Compliance with any such laws and regulations has not had a material adverse effect on our operations to date. We cannot give any assurance, however, that we will not incur significant expenses in the future in order to comply with any such laws or regulations.

EXECUTIVE OFFICERS OF THE REGISTRANT

The following paragraphs discuss information about our executive officers of the Company who are not also directors:

Gregory L. Henslee, age 50,51, Chief Executive Officer and Co-President, has been an O’Reilly team memberTeam Member for 2627 years. Mr. Henslee’s O’Reilly career started as a parts specialist, and during his first five years he served in several positions in retail store operations, including district manager. From there he advanced to Computer Operations Manager, and over the next 15 years, he served as Director of Computer Operations/Loss Prevention, Vice President of Store Operations and as Senior Vice President. In 1999, he became President of Merchandise, Distribution, Information Systems and Loss Prevention, and has been in his current positions of Chief Executive Officer and Co-President since 2005.

Ted F. Wise, age 60,61, Chief Operating Officer and Co-President, has been an O’Reilly team memberTeam Member for 4041 years. Mr. Wise’s primary areas of responsibility are Sales, Operations and Real Estate. He began his O’Reilly career in sales in 1970, was promoted to store manager in 1973 and became our first district manager in 1977. He continued his progression with O’Reilly as Operations Manager, Vice President, Senior Vice President of Operations and Sales, and Executive Vice President. He has been President of Sales, Operations and Real Estate since 1999, and in his current positions of Chief Operating Officer and Co-President since 2005.

Thomas G. McFall, age 40,41, Executive Vice President of Finance and Chief Financial Officer, has been an O’Reilly team memberTeam Member since 2006 and has held his position as Chief Financial Officer during this time. Mr. McFall’s primary areas of responsibility are Finance, Accounting, Risk Management and Human Resources. Prior to joining O’Reilly, Mr. McFall held the position of Chief Financial Officer – Midwest Operation for CSK, following CSK’s acquisition of Murray’s Discount Auto Stores (“Murray’s”). Mr.

McFall served Murray’s for eight years as Controller, Vice President of Finance, and Chief Financial Officer, with direct responsibility for finance and accounting, distribution and logistics operations. Prior to joining Murray’s, Mr. McFall was an Audit Manager with Ernst & Young, LLP in Detroit, Michigan.

Gregory D. Johnson, age 45,46, Senior Vice President of Distribution Operations, has been an O’Reilly team memberTeam Member for 2829 years. Mr. Johnson’s primary area of responsibility is Distribution and Logistics. He began his O’Reilly career as a part-time stocker in the Nashville DC in 1982 and advanced with O’Reilly as Retail Systems Manager, WMS Systems Development Manager, Director of Distribution and Vice President of Distribution. He has been in his current position as Senior Vice President since September 2007.

Randy Johnson, age 55,56, Senior Vice President of Inventory Management, has been an O’Reilly team memberTeam Member for 3738 years. Mr. Johnson’s primary area of responsibility is Inventory Management, Purchasing, Logistics, and Store Design. He began his career in a DC in 1973, working in the stocking, shipping and will call counter departments, and was promoted to customer service manager in 1976. He continued to progress with the development of the inventory control department as Inventory Control Manager and Vice President of Store Inventory Management. He has been in his current position as Senior Vice President of Inventory Management since October 2010.

Jeff M. Shaw, age 48,49, Senior Vice President of Sales and Operations, has been an O’Reilly team memberTeam Member for 2223 years. Mr. Shaw’s primary areas of responsibility are Store Operations and Sales. His O’Reilly career started as a parts specialist, and has progressed through the roles of store manager, district manager, regional manager and Vice President of the Southern division. He advanced to Vice President of Sales and Operations in 2003 and to his current position as Senior Vice President of Sales and Operations in 2004.

Michael D. Swearengin, age 50,51, Senior Vice President of Merchandise, has been an O’Reilly team memberTeam Member for 1718 years. Mr. Swearengin’s primary areas of responsibility are Merchandise, Pricing and Advertising. His O’Reilly career started as an employee in a store later acquired by O’Reilly, he then became Product Manager, a position he held for four years. From there he advanced to Senior Product Manager, Director of Merchandise and Vice President of Merchandise with responsibility for product mix and replenishment. He has been in his current position as Senior Vice President since 2004.

Service Marks and TrademarksSERVICE MARKS AND TRADEMARKS

We have registered, acquired and/or been assigned the following service marks and trademarks: BESTEST®BESTEST^®, BETTER PARTS. BETTER PRICES.^®, BRAKEBEST®BRAKEBEST^®, CERTIFIED AUTO REPAIR®REPAIR^®, CUSTOMIZE YOUR RIDE®RIDE^®, FIRST CALL®CALL^®, FROM OUR STORE TO YOUR DOOR®DOOR^®, HI-LO®HI-LO^®, IMPORT DIRECT®DIRECT^®, IPOLITE®IPOLITE^®, MASTER PRO®PRO^®, MASTER PRO REFINISHING®REFINISHING^®, MICRO-GARD®MICRO-GARD^®, MILES AHEAD®AHEAD^®, MURRAY®MURRAY^®, O®O^®, OMNISPARK®OMNISPARK^®, O’REILLY®O’REILLY^®, O’REILLY AUTO COLOR PROFESSIONAL PAINT PEOPLE®PEOPLE^®, O’REILLY AUTO PARTS®PARTS^®, O’REILLY AUTO PARTS PROFESSIONAL PARTS PEOPLE®PEOPLE^®, O’REILLY AUTOMOTIVE®AUTOMOTIVE^®, O’REILLY RACING®RACING^®, PARTNERSHIP NETWORK®NETWORK^®, PARTS CITY®CITY^®, PARTS CITY AUTO COLOR PROFESSIONAL PAINT PEOPLE®PEOPLE^®, PARTS CITY AUTO PARTS®PARTS^®, PARTS CITY TOOL BOX®BOX^®, PARTS PAYOFF®PAYOFF^®, POWER TORQUE®TORQUE^®, REAL WORLD TRAINING®TRAINING^®, SUPER START®START^®, TOOLBOX®TOOLBOX^®, ULTIMA®ULTIMA^®, CSK PROSHOP®PROSHOP^®, FLAG®FLAG^®, KRAGEN AUTO PARTS®PARTS^®, MURRAY’S AUTO PARTS®PARTS^®, PRIORITY PARTS®PARTS^®, PROXONE®PROXONE^®, SCHUCK’S®SCHUCK’S^®, WE’RE THE PLACE WITH ALL THE PARTS®PARTS^®, MURRAY’S VIP PROGRAM®PROGRAM^®, PAY N $AVE®$AVE^®. Some of the service marks and trademarks listed above may also have a design associated therewith. Each of the service marks and trademarks are in duration for as long as we continue to use and seek renewal of such marks – the duration of each of these service marks and trademarks is typically between five and ten years per renewal. We believe that our business is not otherwise dependent upon any patent, trademark, service mark or copyright.

AVAILABLE INFORMATION

Our Internet address iswww.oreillyauto.com. Interested readers can access, free of charge, our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, through the Securities and Exchange Commission website atwww.sec.gov and searching with our ticker symbol “ORLY”. Such reports are generally available the day they are filed. Upon request, we will furnish interested readers a paper copy of such reports free of charge by contacting Mark Merz, Director of External Reporting and Investor Relations, at 233 South Patterson Avenue, Springfield, Missouri, 65802.

Item 1A.1A.

Risk Factors

Our future performance is subject to a variety of risks and uncertainties. Although the risks described below are the risks that we believe are material, there may also be risks of which we are currently unaware, or that we currently regard as immaterial based upon the information available to us that later may prove to be material. Interested parties should be aware that the occurrence of the events described in these risk factors, elsewhere in this Form 10-K and in our other filings with the Securities and Exchange Commission could have a material adverse effect on our business, operating results and financial condition. Actual results, therefore, may materially differ from anticipated results described in these forward-looking statements.

Deteriorating economic conditions may adversely impact demand for our products, reduce access to credit and cause our customers and others with which we do business to suffer financial hardship, all of which could adversely impact our business, results of operations, financial condition and cash flows.

In recent years, worldwide economic conditions have deteriorated significantly in many countries and regions, including the United States, and such conditions may worsen in the foreseeable future. Although demand for many of our products is primarily non-discretionary in nature and tend to be purchased by consumers out of necessity, rather than on an impulse basis, our sales are impacted by constraints on the economic health of our customers. The economic health of our customers is affected by many factors, including, among others, general business conditions, interest rates, inflation, consumer debt levels, the availability of consumer credit, currency exchange rates, taxation, fuel prices, unemployment trends and other matters that influence consumer confidence and spending. Many of these factors are outside of our control. Our customers’ purchases, including purchases of our products, could decline during periods when income is lower, when prices increase in response to rising costs, or in periods of actual or perceived unfavorable economic conditions. If any of these events occur, or if unfavorable economic conditions challenge the consumer environment, our business, results of operations, financial condition and cash flows could be adversely affected.

Overall demand for products sold in the automotive aftermarket is dependent upon many factors including the total number of vehicle miles driven in the U.S., the total number of registered vehicles the U.S., the age and quality of these registered vehicles and the level of unemployment in the U.S. Adverse changes in these factors could lead to a decreased level of demand for our products, which could negatively impact our business, results of operations, financial condition and cash flows.

In addition, economic conditions, including decreased access to credit, may result in financial difficulties leading to restructurings, bankruptcies, liquidations and other unfavorable events for our customers, suppliers, logistics and other service providers and financial institutions which are counterparties to our credit facilities and interest rate swap transactions. Also, the ability of these third parties to overcome these difficulties may increase. If third parties, on whom we rely for merchandise, are unable to overcome difficulties resulting from the deterioration in economic conditions and provide us with the merchandise we need, or if counterparties to our credit facilities do not perform their obligations, our business, results of operations, financial condition and cash flows could be adversely affected.

We cannot assure that the recently integrated CSK Auto Corporation (“CSK”) stores will perform at the same desired level of profitability as historic O’Reilly stores.

We expect acquired CSK stores to approximate the profitability levels of our core O’Reilly stores, and believe this to be a significant factor in achieving our financial goals. The failure of these stores to attain these profitability levels could seriously impact our forecasted results of operations. Our ability to operate these stores at our expected level will depend, in part, on the successful preservation of the existing DIY customers already established in these markets, growing the commercial customer base, the adoption of the O’Reilly culture, along with maintaining employee morale and the retention of key personnel.

We may not be able to obtain these profitability levels in our acquired CSK stores as soon as we expect, or at all. If we fail to address the challenges of our new markets effectively, our growth strategy and future profitability could be negatively affected, and we may fail to achieve the intended benefits of the merger.

A downgrade in our credit rating would impact our cost of capital and could impact the market value of our unsecured senior notes as well as limit our access to attractive vendor financing programs.

Credit ratings are an important part of our cost of capital. The evaluations are based upon, among other factors, our financial strength. Our current credit ratings provide us with the ability to borrow funds at a specific rate. A downgrade in our current credit rating from both agencies would adversely affect our cost of capital by causing us to pay a higher interest rate on borrowed funds under our credit facility. A downgrade could also adversely affect the market price and/or liquidity of our notes, preventing a holder from selling the notes at a favorable price, as well as adversely affect our ability to issue new notes in the future. In addition, a downgrade could limit the financial institutions willing to commit funds to our vendor financing programs at attractive rates. Decreased participation in our vendor financing programs would lead to an increase in working capital needed to operate the business adversely affecting our cash flow.

Our increased debt levels could adversely affect our cash flow and prevent us from fulfilling our obligations.

We have in place, an unsecured revolving credit facility and unsecured senior notes, which could have important consequences to our financial health. For example, our level of indebtedness could, among other things:

In addition, the terms of the financing obligations include restrictions, such as affirmative and negative covenants, conditions on borrowing and subsidiary guarantees. A failure to comply with these restrictions could result in a default under the financing

obligations or could require us to obtain waivers from our lenders for failure to comply with these restrictions. The occurrence of a default that remains uncured or the inability to secure a necessary consent or waiver could have a material adverse effect on our business, financial condition or results of operations.

A downgrade in our credit rating would impact our cost of capital and could impact the market value of our unsecured senior notes.

Credit ratings are an important part of our cost of capital. We currently have a BBB- credit rating, with a stable outlook, from Standard & Poor’s and a Baa3 credit rating, with a stable outlook, from Moody’s Investors Service. The evaluations are based upon, among other factors, our financial strength. Our current credit ratings provide us with the ability to borrow funds at a specific rate. A downgrade in our current credit rating from both agencies would adversely affect our cost of capital by causing us to pay a higher interest rate on borrowed funds under our credit facility. A downgrade could also adversely affect the market price and/or liquidity of our notes, preventing a holder from selling the notes at a favorable price, as well as adversely affect our ability to issue new notes in the future.

Risks associated with future acquisitions may not lead to expected growth and could result in increased costs and inefficiencies.

We expect to continue to make acquisitions as an element of our growth strategy. Acquisitions involve certain risks that could cause our actual growth and profitability to differ from our expectations, examples of such risks include the following:

The automotive aftermarket business is highly competitive, and we may have to risk our capital to remain competitive.

Both the DIY and professional service provider portions of our business are highly competitive, particularly in the more densely populated areas that we serve. Some of our competitors are larger than we are and have greater financial resources. In addition, some of our competitors are smaller than us,we are, but have a greater presence than we do in a particular market. We may have to expend more resources and risk additional capital to remain competitive. For a list of our principal competitors, see the “Competition” section of Item 1 of this annual report on Form 10-K.

In order to be successful, we will need to retain and motivate key employees.

Our success has been largely dependent on the efforts of certain key personnel. In order to be successful, we will need to retain and motivate executives and other key employees. Experienced management and technical personnel are in high demand and competition for their talents is intense. We must also continue to motivate employees and keep them focused on our strategies and goals. Our business and results of operations could be materially adversely affected by the unexpected loss of the services of one or more of our key employees. We cannot be sure that we will be able to continue to attract qualified personnel, which could cause us to be less efficient, and as a result, may adversely impact our sales and profitability. For a discussion of our management, see the “Business” section of Item 1 of this annual report on Form 10-K.

We cannot assure future growth will be achieved.

We believe that our ability to open additional, profitable stores at a high growth rate will be a significant factor in achieving our growth objectives for the future. Our ability to accomplish our growth objectives is dependent, in part, on matters beyond our control, such as weather conditions, zoning and other issues related to new store site development, the availability of qualified management personnel and general business and economic conditions. We cannot be sure that our growth plans for 20112012 and beyond will be achieved. Failure to achieve our growth objectives may negatively impact the trading price of our common stock. For a discussion of our growth strategies, see the “Growth Strategy” section of Item 1 of this annual report on Form 10-K.

We are sensitive to regional economic and weather conditions that could reduce our costs and sales.

Approximately 29%28% of our stores are located in Texas and California. Therefore, our business is sensitive to the economic and weather conditions of those regions. Unusually inclement weather, such as significant rain, snow, sleet, freezing rain, flooding,

seismic activity and hurricanes, has historically discouraged our customers from visiting our stores during the affected period and reduced our sales, particularly to DIY customers. In addition, our stores located in coastal regions may be subject to increased insurance claims resulting from regional weather conditions and our results of operations and financial condition could be adversely affected.

Legal proceedings and related matters arising from CSK could adversely affect us.

As discussed in Item 3, “Legal Proceedings” and Note 14 “Legal Matters” to the consolidated financial statements, several of CSK’s former officers and employees were charged by the Department of Justice (“DOJ”) and named in civil actions by the Securities and Exchange Commission (“SEC”). O’Reilly and the DOJ have agreed in principle, subject to final documentation, to resolve CSK’s pre-acquisition issues with the DOJ. The pre-acquisition SEC investigation of CSK, which commenced in 2006, was settled in May of 2009 by administrative order without fines, disgorgement or other financial remedies. Under Delaware law, the charter documents of the CSK entities and certain indemnification agreements, CSK has certain obligations to indemnify these persons and, as a result, O’Reilly is currently incurring legal fees on the behalf of these persons in relation to certain matters. There can be no assurance that the expenses incurred in connection with the resolution of these matters will be covered by CSK’s directors’ and officers’ insurance policies. If we incur significant uninsured expenses in connection with the resolution of the matters described above, this could have a material adverse effect on our business, results of operations, financial condition and cash flows.

Sales of shares of our common stock eligible for future sale could adversely affect our share price.

All of the shares of common stock currently held by our affiliates may be sold in reliance upon the exemptive provisions of Rule 144 of the Securities Act of 1933, as amended, subject to certain volume and other conditions imposed by such rule. We cannot predict the effect, if any, which future sales of shares of common stock or the availability of such shares for sale will have on the market price of the common stock prevailing from time to time. We believe sales of substantial amounts of common stock, or the perception that such sales might occur, could adversely affect the prevailing market price of the common stock.

Risks related to the Companyus and unanticipated fluctuations in our quarterly operating results, could affect the Company’sour stock price.

We believe that quarter-to-quarter comparisons of our financial results are not necessarily meaningful indicators of theour future operating results of the Company and should not be relied on as an indication of future performance. If our quarterly operating results fail to meet the expectations of analysts, the trading price of our common stock could be negatively affected. We cannot be certain that our business strategy and our plans to integrate the operations of CSK will be successful or that they will successfully meet the expectations of these analysts. If we fail to adequately address any of these risks or difficulties, our business would likely suffer.

The market price of our common stock may be volatile and could expose us to securities class action litigation.

The stock market and the price of our common stock may be subject to wide fluctuations based upon general economic and market conditions. The market price for our common stock may also be affected by our ability to meet analysts’ expectations. Failure to meet such expectations, even slightly, could have an adverse effect on the market price of our common stock.

In addition, stock market volatility has had a significant effect on the market prices of securities issued by many companies for reasons unrelated to the operating performance of these companies. Downturns in the stock market may cause the price of our common stock to decline. In the past, following periods of volatility in the market price of a company’s securities, securities class action litigation has often been instituted against such companies. If similar litigation were instituted against us, it could result in substantial costs and a diversion of our management’s attention and resources, which could have an adverse effect on our business.

A change in the relationship with any of our key vendors or the unavailability of our key products at competitive prices could affect our financial health.

Our business depends on developing and maintaining close relationships with our vendors and on our vendors’ ability or willingness to sell quality products to us at favorable prices and terms. Many factors outside of our control may harm these relationships and the ability or willingness of these vendors to sell us products on favorable terms. For example, financial or operational difficulties that our vendors may face could increase the cost of the products we purchase from them or our ability to source product from them. In addition, the trend towards consolidation among automotive parts suppliers as well as the off-shoring of manufacturing capacity to foreign countries may disrupt or end our relationship with some vendors, and could lead to less competition and result in higher prices. We could also be negatively impacted by suppliers who might experience work stoppages, labor strikes or other interruptions to or difficulties in the manufacture or supply of the products we purchase from them.

ComplicationsBusiness interruptions in our distribution centers andor other factors affecting thefacilities may affect our store hours, operability of our computer systems, and/or availability and distribution of merchandise, which may affect our business.

We operate 23Weather, terrorist activities, war or other disasters or the threat of them, may result in the closure of our distribution centers (“DC”) nationwide to support our business. If complications arise with any facilitys) or if any facility is severely damagedother facilities or destroyed, our other DCs may not be able to fully support the resulting additional distribution demands. This may adversely affect our ability to deliver inventory to our stores on a nightly basis and thereforebasis. This may affect our ability to timely provide products to our customers, resulting in lost sales.sales or a potential loss of customer loyalty. Some of our merchandise is imported from other countries and these goods could become difficult or impossible to bring into the United States, and we may not be able to obtain such merchandise from other sources at similar prices. Such a disruption in revenue could potentially have a negative impact on our results of operations and financial condition.

We rely extensively on our computer systems to manage inventory, process transactions and timely provide products to our customers. Our systems are subject to damage or interruption from power outages, telecommunications failures, computer viruses, security breaches or other catastrophic events. If our systems are damaged or fail to function properly, we may experience loss of critical data and interruptions or delays in our ability to manage inventories or process customer transactions. Such a disruption in revenue could potentially have a negative impact on our results of operations and financial condition.

A breach of customer, Team Member or Company information could damage our reputation or result in substantial additional costs or possible litigation.

Our business involves the storage of personal information about our customers and Team Members. We have taken reasonable and appropriate steps to protect this information; however, if we experience a significant data security breach, we could be exposed to damage to our reputation, additional costs, lost sales or possible regulatory action. The regulatory environment related to information security and privacy is constantly changing, and compliance with those requirements could result in additional costs. There is no guarantee that the procedures that we have implemented to protect against unauthorized access to secured data are adequate to safeguard against all data security breaches, and such a breach could potentially have a negative impact on our results of operations and financial condition.

Environmental legislation and regulations could affect our operations, such as by increasing fuel prices, and therefore increase our operating costs.

Initiatives to limit greenhouse gas emissions and bills related to climate change have been introduced in the U.S. Congress, which could adversely impact all industries. While it is uncertain whether these will become law, additional climate change related mandates could potentially be forthcoming, and these mandates, if enacted, could adversely impact our costs, including, among other things, increasing fuel prices.

Not applicable.

Item 2.

Properties

Distribution centers and other properties

We currently operate 23 regional distribution centers (“DC”s). As of December 31, 2011, we leased eight DCs (2.8 million operating square footage) and owned 15 DCs (5.7 million operating square footage) for total DC square footage of 8.5 million. The following table provides certain information regarding our administrativeDCs, returns facilities and corporate offices and distribution centers (“DC”) as of December 31, 2010:2011:

(g)	Occupied under the terms of two separate leases both expiring December 31, 2018, with an unaffiliated party, subject to renewal for two five-year terms at our option.

(h)	Primary facility owned, additional space leased and occupied under the terms of lease expiring July 31, 2014, with an unaffiliated party, subject to renewal for one five-year term at our option.

(i)	Occupied under the terms of a lease expiring June 22, 2015, with an unaffiliated party, subject to renewal for three five-year terms at our option.

(j)	Occupied under the terms of a lease expiring June 30, 2025, with an unaffiliated party, subject to renewal six five-year terms at our option.

(k)	Occupied under the terms of a lease expiring June 30, 2018, with an unaffiliated party, subject to renewal for two five-year terms at our option.

(l)	Occupied under the terms of a lease expiring August 31, 2013, with an unaffiliated party, not subject to renewal.

(m)	Occupied under the terms of a lease expiring April 30, 2017, with an unaffiliated party, subject to renewal for three five-year terms at our option.

(n)	Occupied under the terms of a lease expiring May 31, 2012, with an unaffiliated party, subject to renewal for four five-year terms at our option.

(o)	Occupied under the terms of a lease expiring October 31, 2012, with an unaffiliated party, not subject to renewal.

(p)	Occupied under the terms of a lease expiring August 31, 2024, with an unaffiliated party, subject to renewal for four five-year terms at our option.

Of the 3,57023 DCs that we operated at December 31, 2011, 15 were owned and 8 were leased. The leased facilities typically require a fixed base rent, payment of certain tax, insurance and maintenance expense and have an original term of, at a minimum, 20 years, subject to one five-year renewal at our option. One of our bulk facilities is leased from an entity owned by an affiliated director’s immediate family. This lease requires payment of a fixed base rent, payment of certain tax, insurance and maintenance expenses and an original term of 15 years, subject to three five-year renewals at our option. We believe that this lease agreement with the affiliated entity is on terms comparable to those obtainable from third parties.

Of the 3,740 stores that we operated at December 31, 2010, 1,1722011, 1,286 stores were owned, 2,3282,381 stores were leased from unaffiliated parties and 7077 stores were leased from oneentities in which certain of four entities owned by O’Reillyour affiliated directors, members of our affiliated director’s immediate family, members.or our executive officers, are affiliated. Leases with unaffiliated parties generally provide for payment of a fixed base rent, payment of certain tax, insurance and maintenance expenses and an original term of, at a minimum, 10 years, subject to one or more renewals at our option. We have entered into separate master lease agreements with each of the affiliated entities for the occupancy of the stores covered thereby. Such master lease agreements with two of the three O’Reilly familysix affiliated entities have been modified to extend the term of the lease agreement for specific stores. The master lease agreements or modifications thereto expire on dates ranging from March 31, 2011,2013, to December 31, 2029.September 30, 2031. We believe that the lease agreements with the affiliated entities are on terms comparable to those obtainable from third parties.

We believe that our present facilities are in good condition, are adequately insured and are adequate for the conduct of our current operations. The store servicing capability of our 23 existing DCs is approximately 4,2504,340 stores, providing a growth capacity for over 680of more than 500 stores. We believe this growth capacity will provide us with the DC infrastructure needed for near termnear-term expansion without the need for additional DC facilities.

O’Reilly Litigation:

O’Reilly is currently involved in litigation incidental to the ordinary conduct of the Company’s business. The Company records reserves for litigation losses in instances where a material adverse outcome is probable and the Company is able to reasonably estimate the probable loss. The Company reserves for an estimate of material legal costs to be incurred in pending litigation matters. Although the Company cannot ascertain the amount of liability that it may incur from any of these matters, it does not currently believe that, in the aggregate, these matters, taking into account applicable insurance and reserves, will have a material adverse effect on its consolidated financial position, results of operations or cash flows in a particular quarter or annual period.

In addition, O’Reilly is involved in resolving the governmental investigations that were being conducted against CSK and CSK’s former officers and other litigation, prior to its acquisition by O’Reilly, Automotive, Inc. as described below.

CSK Pre-Acquisition Matters – Governmental Investigations and Actions:

As previously reported, the pre-acquisition Securities and Exchange Commission (“SEC”) investigationgovernmental investigations of CSK which commenced in 2006, was settled in Mayregarding its legacy pre-acquisition accounting practices have concluded.

CSK’s former Controller and its former Director of Credit and Receivables pled guilty to obstruction of justice on April 7, 2009 by administrative order without fines, disgorgement or other financial remedies. The Department of Justice (“DOJ”)’s criminal investigation into these same mattersand April 15, 2009, respectively, as previously disclosed is near a conclusion and is described more fully below. In addition, thereported. They were sentenced on November 7, 2011. CSK’s former Chief Financial Officer was sentenced, as previously reported, SEC complainton September 19, 2011. No appeal followed. Accordingly, with the sentencing on November 7, 2011, criminal proceedings against three (3) former CSK employees of CSK for alleged conduct related to CSK’s historical accounting practices remains ongoing. have reached finality.

The action filed by the SEC on July 22, 2009, against Maynard L. Jenkins, the former Chief Executive Officer of CSK, seeking reimbursement from Mr. Jenkins of certain bonuses and stock sale profits pursuant to Section 304 of the Sarbanes-Oxley Act of 2002, as previously reported, has also continues. reached finality. On November 16, 2011, the Court entered a Final Judgment which required Mr. Jenkins to reimburse $2.8 million to the Company as successor SEC issuer to CSK Auto Corp. Since entry of the Final Judgment, the payment obligation created thereunder has been satisfied and O’Reilly has recorded the reimbursement as an adjustment to operating income in the fourth quarter of 2011.

The previously reported DOJ criminal prosecution of Don Watson,SEC civil action for alleged misconduct related to CSK’s historical accounting practices against the former Chief Financial Officer, Controller and Director of Credit and Receivables of CSK, remains ongoing with trial set to commenceongoing. However, on or about June 7, 2011.

With respectJanuary 20, 2012, the parties filed a “Joint Report On Settlement Talks” wherein they report that offers of settlement had been made which would be presented to the ongoing DOJ investigation into CSK’s pre-acquisition accounting practices as referenced above, as previously disclosed, O’ReillyCommission for its consideration and approval. The parties have requested a “complete litigation standstill” while the DOJ agreed in principle, subject to final documentation, to resolveCommission considers the DOJ investigation of CSK’s legacy pre-acquisition accounting practices. The Company and the DOJ continue work to complete the final documentation necessary for the execution of the Non-Prosecution Agreement previously referenced and payment of the one-time monetary penalty of $20.9 million, also previously reported. The Company’s total reserve related to the DOJ investigation of CSK was $21.4 million as of December 31, 2010, which relates to the amount of the monetary penalty and associated legal costs.

Notwithstanding the agreement in principle with the DOJ, several of CSK’s former directors or officers and current or former employees have been or may be interviewed or deposed as part of criminal, administrative and civil investigations and lawsuits. As described above, certain former employees of CSK are the subject of civil and criminal litigation commenced by the government.settlement offers made. Under Delaware law, the charter documents of the CSK entities, and certain indemnification agreements, CSK hasmay have certain indemnification obligations to indemnify these personsin connection with the SEC civil action, and, as a result, O’Reilly is currently incurring legal fees on behalf of these persons in relation to pending matters.the ongoing SEC litigation. Some of these indemnification obligations and other related costs may not be covered by CSK’s insurance policies.

As a result of the CSK acquisition, O’Reilly has incurred and expects to continue to incur ongoingadditional legal fees and costs related to the indemnity obligations related toarising from the litigation that has commenced by the DOJ and SEC ofagainst CSK’s former employees.employees until final resolution of the remaining matters. O’Reilly has a remaining reserve, with respect to suchthe indemnification obligations of $18.8$14.1 million as ofat December 31, 2010,2011, which was primarily recordedrelates to both expected additional legal fees and costs and to the payment of those legal fees and costs already incurred.

The remaining litigation, as an assumed liability in the Company’s allocation of the purchase price of CSK.

The foregoing governmental investigations and indemnification matters aredescribed above, is subject to many uncertainties,uncertainty, and, given theirits complexity and scope, theirthe final outcome cannot be predicted at this time. It is possible that in a particular quarter or annual period the Company’s results of operations and cash flows could be materially affected by an ultimate unfavorable resolution of such matters,matter, depending, in part, upon the results of operations or cash flows for such period. However, at this time, management believes that the ultimate outcome of all of such regulatory proceedings and otherthe pending matters, that are pending, after consideration of applicable reserves and potentially available insurance coverage benefits not contemplated in recorded reserves should not have a material adverse effect on the Company’s consolidated financial condition, results of operations andor cash flows.

Not applicable.

PART II

The Company’sCommon stock:

Shares of O’Reilly Automotive, Inc. (the “Company”) common stock isare traded on The NASDAQ Global Select Market (“Nasdaq”) under the symbol “ORLY”. As of February 21, 2011, O’Reilly Automotive, Inc. had approximately 86,000 shareholders based on the number of holders of record and an estimate of individual participants represented by security position listings. The Company’s common stock began trading on April 22, 1993; no cash dividends have been declared since that time, and we do not anticipate paying any cash dividends in the foreseeable future.

As of February 20, 2012, the Company had approximately 96,000 shareholders of common stock based on the number of holders of record and an estimate of individual participants represented by security position listings.

The prices in the following table represent the high and low sales price for O’Reilly Automotive, Inc.the Company’s common stock as reported by Nasdaq. During fiscal 2010,

Sales of unregistered securities:

There were no sales of unregistered securities during the year ended December 31, 2011.

Issuer purchases of equity securities:

The following table identifies all repurchases during the fourth quarter ended December 31, 2011, of any of the Company’s securities registered under Section 12 of the Exchange Act, as amended, by or on behalf of the Company made no purchases or repurchasesany affiliated purchaser (in thousands, except per share amounts):

The Company repurchased a total of 15.9 million shares of its common stock.stock under its publicly announced share repurchase program during the year ended December 31, 2011, at an average price per share of $61.49. Subsequent to December 31, 2011, and up to and including February 28, 2012, the Company repurchased an additional 0.6 million shares of its common stock at an average price per share of $83.39, for a total investment of $48 million, excluding fees and commissions.

Stock performance graph:

The graph below shows the cumulative total stockholdershareholder return assuming the investment of $100, on December 31, 2005,29, 2006, and the reinvestment of dividends thereafter, in the Company’s common stock versus the Nasdaq Retail Trade Stocks Total Return Index, Nasdaq United States Stock Market Total Returns Index (“Nasdaq US”) and the Standard and Poor’s S&P 500 Index (“S&P 500”).

Item 6.

Selected Financial Data

The table below compares the Company’sO’Reilly Automotive, Inc.’s (the “Company’s”) selected financial data over a ten-year period. In 2001, 2005 and 2008, the Company acquired Mid-State Automotive Distributors, Midwest Auto Parts Distributors and CSK Auto Corporation (“CSK”), respectively. The 2001 Mid-State acquisition added 82 stores, the 2005 Midwest acquisition added 72 stores and the 2008 CSK acquisition added 1,342 stores to the O’Reilly store count. Financial results for these acquired companies have been included in the Company’s consolidated financial statements from the dates of the acquisitions forward.