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).

Indicate the number of shares outstanding of each of the issuer's classes of common stock as of the latest practicable date: Common stock, $0.01 par value - 103,767,124101,444,779 shares outstanding as of August 4,November 3, 2014.

The accompanying unaudited condensed consolidated financial statements of O'Reilly Automotive, Inc. and its subsidiaries (the "Company" or "O'Reilly") have been prepared in accordance with United States generally accepted accounting principles ("U.S. GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and sixnine months ended JuneSeptember 30, 2014, are not necessarily indicative of the results that may be expected for the year ended December 31, 2014. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2013.

The Company uses the fair value hierarchy, which prioritizes the inputs used to measure the fair value of certain of its financial instruments. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The Company uses the income and market approaches to determine the fair value of its assets and liabilities. The three levels of the fair value hierarchy are set forth below:

Certain long-lived non-financial assets and liabilities may be required to be measured at fair value on a nonrecurring basis in certain circumstances, including when there is evidence of impairment. These non-financial assets and liabilities may include assets acquired in a business combination or property and equipment that are determined to be impaired. As of JuneSeptember 30, 2014, and December 31, 2013, the Company did not have any non-financial assets or liabilities that had been measured at fair value subsequent to initial recognition.

The carrying amounts of the Company’s senior notes are included in “Long-term debt, less current portion” on the accompanying Condensed Consolidated Balance Sheets as of JuneSeptember 30, 2014, and December 31, 2013.

The table below identifies the estimated fair value of the Company’s senior notes, using the market approach. The fair values as of JuneSeptember 30, 2014, and December 31, 2013, were determined by reference to quoted market prices of the same or similar instruments (Level 2) (in thousands):

The accompanying Condensed Consolidated Balance Sheets include other financial instruments, including cash and cash equivalents, accounts receivable, amounts receivable from vendors and accounts payable. Due to the short-term nature of these financial instruments, the Company believes that the carrying values of these instruments approximate their fair values.

The following table identifies the amounts included in "Current portion of long-term debt" and "Long-term debt, less current portion" on the accompanying Condensed Consolidated Balance Sheets as of JuneSeptember 30, 2014, and December 31, 2013 (in thousands):

In January of 2011, and as amended in September of 2011 and July of 2013, the Company entered into a credit agreement (the "Credit Agreement") for a five-year $600 million unsecured revolving credit facility (the "Revolving Credit Facility") arranged by Bank of America, N.A., which is scheduled to mature in July of 2018. The Credit Agreement includes a $200 million sub-limit for the issuance of letters of credit and a $75 million sub-limit for swing line borrowings under the Revolving Credit Facility. As described in the Credit Agreement governing the Revolving Credit Facility, the Company may, from time to time, subject to certain conditions, increase the aggregate commitments under the Revolving Credit Facility by up to $200 million. As of JuneSeptember 30, 2014, and December 31, 2013, the Company had outstanding letters of credit, primarily to support obligations related to workers’ compensation, general liability and other insurance policies, in the amount of $47.8 million and $51.7 million, respectively, reducing the aggregate availability under the Revolving Credit Facility by those amounts. As of JuneSeptember 30, 2014, and December 31, 2013, the Company had no outstanding borrowings under the Revolving Credit Facility.

Borrowings under the Revolving Credit Facility (other than swing line loans) bear interest, at the Company’s option, at the Base Rate or Eurodollar Rate (both as defined in the Credit Agreement) plus an applicable margin. Swing line loans made under the Revolving Credit Facility bear interest at the Base Rate plus the applicable margin for Base Rate loans. In addition, the Company pays a facility fee on the aggregate amount of the commitments in an amount equal to a percentage of such commitments. The interest rate margins and facility fee are based upon the better of the ratings assigned to the Company’s debt by Moody’s Investor Service, Inc. and Standard & Poor’s Rating Services, subject to limited exceptions. As of JuneSeptember 30, 2014, based upon the Company's credit ratings, its margin for Base Rate loans was 0.000%, its margin for Eurodollar Rate loans was 0.975% and its facility fee was 0.150%.

The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.25 times through December 31, 2014, and 2.50 times thereafter through maturity, and a maximum consolidated leverage ratio of 3.00 times through maturity. The consolidated leverage ratio includes a calculation of adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and stock-based compensation expense. Adjusted debt includes outstanding debt, outstanding stand-by letters of credit and similar instruments, six-times rent expense and excludes any premium or discount recorded in conjunction with the issuance of long-term debt. In the event that the Company should default on any covenant contained within the Credit Agreement, certain actions may be taken, including, but not limited to, possible termination of credit extensions, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from lenders. As of JuneSeptember 30, 2014, the Company remained in compliance with all covenants under the Credit Agreement.

The Company has issued $1.4 billion aggregate principal amount of unsecured senior notes due between 2021 and 2023 with United Missouri Bank, N.A. ("UMB") as trustee. Interest on the unsecured notes of 3.800% to 4.875% is payable biannually and is computed on the basis of a 360-day year.

The senior notes are guaranteed on a senior unsecured basis by each of the Company’s subsidiaries (“Subsidiary Guarantors”) that incurs or guarantees the Company’s obligations under the Company’s Revolving Credit Facility or certain other debt of the Company or any of the Subsidiary Guarantors. The guarantees are joint and several and full and unconditional, subject to certain customary automatic release provisions, including release of the subsidiary guarantor’s guarantee under the Company’s Credit Agreement and certain other debt, or, in certain circumstances, the sale or other disposition of a majority of the voting power of the capital interest in, or of all or substantially all of the property of, the subsidiary guarantor.  Each of the Subsidiary Guarantors is 100% owned, directly or indirectly, by the Company and the Company has no independent assets or operations other than those of its subsidiaries. The only direct or indirect subsidiaries of the Company that would not be Subsidiary Guarantors would be minor subsidiaries. Neither the Company, nor any of its Subsidiary Guarantors, are subject to any material or significant restrictions on the Company’s ability to obtain funds from its subsidiaries by dividend or loan or to transfer assets from such subsidiaries, except as provided by applicable law. Each of the senior notes is subject to certain customary covenants, with which the Company complied as of JuneSeptember 30, 2014.

The Company provides warranties on certain merchandise it sells with warranty periods ranging from 30 days to limited lifetime warranties. The risk of loss arising from warranty claims is typically the obligation of the Company's vendors. Certain vendors provide upfront allowances to the Company in lieu of accepting the obligation for warranty claims. For this merchandise, when sold, the Company bears the risk of loss associated with the cost of warranty claims. Differences between vendor allowances received by the Company in lieu of warranty obligations and estimated warranty expense are recorded as an adjustment to cost of sales. Estimated warranty costs are based on the historical failure rate of each individual product line. The Company's historical experience has been that failure rates are relatively consistent over time and that the ultimate cost of warranty claims to the Company has been driven by volume of units sold as opposed to fluctuations in failure rates or the variation of the cost of individual claims. The Company's product warranty liabilities are included in “Other current liabilities” on the accompanying Condensed Consolidated Balance Sheets as of JuneSeptember 30, 2014, and December 31, 2013.

The following table identifies the changes in the Company’s aggregate product warranty liabilities for the sixnine months ended JuneSeptember 30, 2014 (in thousands):

Under the Company's share repurchase program, as approved by the Board of Directors, the Company may, from time to time, repurchase shares of its common stock, solely through open market purchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate trading policy requirements and overall market conditions. The Company and its Board of Directors may increase or otherwise modify, renew, suspend or terminate the share repurchase program at any time, without prior notice. As announced on February 5, 2014, the Company's Board of Directors approved a resolution to increase the cumulative authorization amount by an additional $500 million raisingand, as announced on August 13, 2014, the Company's Board of Directors approved a resolution to increase the cumulative authorization under the share repurchase programamount by an additional $500 million to $4.0$4.5 billion. The additional $500 million authorization isauthorizations are each effective for a three-year period,periods, which began on February 5, 2014.2014, and August 13, 2014, respectively.

The following table identifies shares of the Company’s common stock that have been repurchased as part of the Company’s publicly announced share repurchase program (in thousands, except per share data):

As of JuneSeptember 30, 2014, the Company had $346.1$458.6 million remaining under its share repurchase program. Subsequent to the end of the secondthird quarter and through August 8,November 7, 2014, the Company repurchased an additional 1.21.1 million shares of its common stock under its share repurchase program, at an average price of $151.00,$151.05, for a total investment of $177.8$172.3 million. The Company has repurchased a

total of 43.846.3 million shares of its common stock under its share repurchase program since the inception of the program in January of 2011 and through August 8,November 7, 2014, at an average price of $87.47,$90.99, for a total aggregate investment of $3.8$4.2 billion.

The Company recognizes share-based compensation expense based on the fair value of the grants, awards or shares at the time of the grant, award or issuance. Share-based compensation includes stock option awards issued under the Company’s employee incentive plans and director stock plan, restricted stock awarded under the Company’s employee incentive plans, performance incentive plan and director stock plan, stock issued through the Company’s employee stock purchase plan and stock awarded to employees through other benefit programs.

The Company’s stock-based incentive plans provide for the granting of stock options for the purchase of common stock of the Company to directors and certain key employees of the Company. Options are granted at an exercise price that is equal to the closing market price of the Company's common stock on the date of the grant. Director options granted under the plans expire after seven years and are fully vested after six months. Employee options granted under the plans expire after ten years and typically vest 25% per year, over four years. The Company records compensation expense for the grant date fair value of the option awards, adjusted for estimated forfeitures, evenly over the vesting period.

The table below identifies stock option activity under these plans during the sixnine months ended JuneSeptember 30, 2014:

The fair value of each stock option award is estimated on the date of the grant using the Black-Scholes option pricing model. The Black-Scholes model requires the use of assumptions, including the risk free rate, expected life, expected volatility and expected dividend yield.

The table below identifies the weighted-average assumptions used for stock options awarded during the sixnine months ended JuneSeptember 30, 2014 and 2013:

The Company’s forfeiture rate is the estimated percentage of options awarded that are expected to be forfeited or canceled prior to becoming fully vested. The Company’s estimate is evaluated periodically and is based upon historical experience at the time of evaluation and reduces expense ratably over the vesting period or the minimum required service period.

The following table summarizes activity related to stock options awarded by the Company for the three and sixnine months ended JuneSeptember 30, 2014 and 2013 (in thousands):

The weighted-average grant-date fair value of options granted during the sixnine months ended JuneSeptember 30, 2014, was $37.63$36.86 compared to $29.54$29.76 for the sixnine months ended JuneSeptember 30, 2013. The remaining unrecognized compensation expense related to unvested stock option awards at JuneSeptember 30, 2014, was $34.1$29.4 million and the weighted-average period of time over which this cost will be recognized is 2.52.3 years.

The Company sponsors other share-based compensation plans: an employee stock purchase plan (the “ESPP”), which permits all eligible employees to purchase shares of the Company’s common stock at 85% of the fair market value; a performance incentive plan, which provides for the award of shares of restricted stock to its corporate and senior management that vest evenly over a three-year period and are held in escrow until such vesting has occurred; and a director stock plan, which provides for the award of shares of restricted stock to the Company's independent directors that vest evenly over a three-year period and are held in escrow until such vesting has occurred. The fair value of shares awarded under these plans is based on the closing market price of the Company's common stock on the date of award, and compensation expense is recorded evenly over the vesting period.

The table below summarizes activity related to the Company’s other share-based compensation and benefit plans for the three and sixnine months ended JuneSeptember 30, 2014 and 2013 (in thousands):

The following table reconciles the numerator and denominator used in the basic and diluted earnings per share calculations for the three and sixnine months ended JuneSeptember 30, 2014 and 2013 (in thousands, except per share data):

For the three and sixnine months ended JuneSeptember 30, 2014 and 2013, the computation of diluted earnings per share did not include certain securities. These securities represent underlying stock options not included in the computation of diluted earnings per share, because the inclusion of such equity awards would have been antidilutive.

Subsequent to the end of the secondthird quarter and through August 8,November 7, 2014, the Company repurchased 1.21.1 million shares of its common stock, at an average price of $151.00,$151.05, for a total investment of $177.8$172.3 million.

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 was involved in resolving governmental investigations that were being conducted against CSK Auto Corporation ("CSK") and CSK’s former officers and other litigation, prior to its acquisition by O’Reilly in 2008, as described below.

As previously reported, the governmental investigations of CSK regarding its legacy pre-acquisition accounting practices have concluded. All criminal charges against former employees of CSK related to its legacy pre-acquisition accounting practices, as well as the civil litigation filed against CSK’s former Chief Executive Officer by the Securities and Exchange Commission (the "SEC"), have concluded.

Under Delaware law, the charter documents of the CSK entities, and certain indemnification agreements, CSK may have certain indemnification obligations. As a result of the CSK acquisition, O’Reilly has incurred legal fees and costs related to these potential indemnification obligations arising from the litigation commenced by the Department of Justice and SEC against CSK’s former employees. Whether those legal fees and costs are covered by CSK’s insurance is subject to uncertainty, and, given its complexity and scope, the final outcome cannot be predicted at this time. O’Reilly has a remaining reserve, with respect to the indemnification obligations of $13.4

Unless otherwise indicated, "we," "us," our" and similar terms, as well as references to the "Company" or "O'Reilly" refer to O'Reilly Automotive, Inc. and its subsidiaries.

In Management’s Discussion and Analysis, we provide a historical and prospective narrative of our general financial condition, results of operations, liquidity and certain other factors that may affect our future results, including:

The review of Management’s Discussion and Analysis should be made in conjunction with our condensed consolidated financial statements, related notes and other financial information, forward-looking statements and other risk factors included elsewhere in this quarterly report.

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 quarterly report that are not historical facts are forward-looking statements, such as statements discussing among other things, expected growth, store development, 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 regulations, our increased debt levels, credit ratings on public debt, our ability to hire and retain qualified employees, risks associated with the performance of acquired businesses, 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 our annual report on Form 10-K for the year ended December 31, 2013, for additional factors that could materially affect our financial performance. Forward-looking statements speak only as of the date they were made, and we undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

We are a specialty retailer of automotive aftermarket parts, tools, supplies, equipment and accessories in the United States. We are one of the largest U.S. automotive aftermarket specialty retailers, selling our products to both do-it-yourself (“DIY”) customers and professional service providers – our “dual market strategy.” Our stores carry an extensive product line consisting of new and remanufactured automotive hard parts, maintenance items, accessories, a complete line of auto body paint and related materials, automotive tools and professional service provider service equipment. Our extensive product line includes an assortment of products that are differentiated by quality and price for most of the product lines we offer. For many of our product offerings, this quality differentiation reflects “good,” “better,” and “best” alternatives. Our sales and total gross margin dollars are highest for the “best” quality category of products. Consumers’ willingness to select products at a higher point on the value spectrum is a driver of sales and profitability in our industry. Our stores also offer enhanced services and programs to our customers:  used oil, oil filter and battery recycling; battery, wiper and bulb replacement; battery diagnostic testing; electrical and module testing; check engine light code extraction; loaner tool program; drum and rotor resurfacing; custom hydraulic hoses; professional paint shop mixing and related materials; and machine shops.

Our strategy is to open new stores to achieve greater penetration into existing markets and expansion into new, contiguous markets. We plan to open 200 net, new stores in 2014.2014, and 205 net, new stores in 2015. 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. We believe our investment in store growth will be funded with the cash flows expected to be generated by our existing operations and through available borrowings under our existing credit facility. During the three months ended JuneSeptember 30, 2014, we opened 4257 stores and closed one store.three stores. During the sixnine months ended JuneSeptember 30, 2014, we opened 93150 stores and closed twofive stores and, as of that date, operated 4,2574,311 stores in 4243 states.

Operating within the retail industry, we are influenced by a number of general macroeconomic factors including, but not limited to, fuel costs, unemployment rates, consumer preferences and spending habits, and competition. The difficult conditions that affected the overall macroeconomic environment in recent years continue to impact O’Reilly and the retail sector in general. We believe that the average consumer’s tendency has been to “trade down” to lower quality products during challenging macroeconomic conditions. We have ongoing initiatives aimed at tailoring our product offering to adjust to customers’ changing preferences; however, we also continue to have initiatives focused on marketing and training to educate customers on the advantages of “purchasing up” on the value spectrum.

We believe the key drivers of current and future demand of the products sold within the automotive aftermarket include the number of U.S. miles driven, number of U.S. registered vehicles, new light vehicle registrations, average vehicle age and unemployment.

We remain confident in our ability 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 hard work and excellent customer service.

Sales for the three months ended JuneSeptember 30, 2014, increased $132$149 million to $1.85$1.88 billion from $1.71$1.73 billion for the same period one year ago, representing an increase of 8%9%. Sales for the sixnine months ended JuneSeptember 30, 2014, increased $275$424 million to $3.58$5.45 billion from $3.30$5.03 billion for the same period one year ago, representing an increase of 8%. Comparable store sales for stores open at least one year increased 5.1%6.2% and 6.5%4.6% for the three months ended JuneSeptember 30, 2014 and 2013, respectively. Comparable store sales for stores open at least one year increased 5.7%5.9% and 3.6%3.9% for the sixnine months ended JuneSeptember 30, 2014 and 2013, respectively. Comparable store sales are calculated

sales are calculated based on the change in sales of stores open at least one year and exclude sales of specialty machinery, sales to independent parts stores and sales to Team Members.

 

The following table presents the components of the increase in sales for the three and sixnine months ended JuneSeptember 30, 2014 (in millions):

We believe our increased sales are the result of store growth and the high levels of customer service provided by our well-trained and technically proficient Team Members, superior inventory availability, enhanced services and programs offered in most stores, a broader selection of product offerings in most stores with a dynamic catalog system to identify and source parts, a targeted promotional and advertising effort through a variety of media and localized promotional events, continued improvement in the merchandising and store layouts of our stores, compensation programs for all store Team Members that provide incentives for performance and our continued focus on serving both DIY and professional service provider customers.

Our comparable store sales increaseincreases for the three months and sixnine months ended JuneSeptember 30, 2014, waswere driven by an increaseincreases in average ticket values and customer transaction counts for both DIY and professional business, and an increase in customer transaction counts for the professional business, partially offset by a slightly negative DIY customer transaction counts for the three months ended June 30, 2014.service provider customers. The improvements in average ticket values were the result of the continued growth of the more costly, hard part categories as a percentage of our total sales. The overall growth in the hard part categories continues to be driven by the increasing cost of replacement parts necessary to maintain the current population of better engineered and more technically advanced vehicles. The increaseincreases in professional service provider customer transaction counts waswere primarily driven by our acquired markets and the continued growth of less mature stores. BothThe increases in DIY transaction counts were driven by our ongoing focus on staffing our stores with knowledgeable parts professionals to assist our DIY customers during high DIY traffic periods, including nights and weekends. Although both DIY and professional service provider customer transaction counts were positive for the three and nine months ended September 30, 2014, both DIY and professional service provider customer transaction counts continue to be negatively impacted by better engineered and more technically advanced vehicles, which have been manufactured in recent years. These vehicles require less frequent repairs and the component parts are more durable and last for longer periods of time; however, when repairs are required, the cost of the replacement parts is, on average, greater.

We opened 4154 and 91145 net, new stores during the three and sixnine months ended JuneSeptember 30, 2014, respectively, compared to 4648 and 111159 net, new stores for the three and sixnine months ended JuneSeptember 30, 2013, respectively. As of JuneSeptember 30, 2014, we operated 4,2574,311 stores in 4243 states compared to 4,0874,135 stores in 42 states at JuneSeptember 30, 2013. We anticipate total new store growth to be 200 net, new storesstore openings in 2014.2014, and 205 net, new store openings in 2015.

Gross profit for the three months ended JuneSeptember 30, 2014, increased to $951$968 million (or 51.5%51.6% of sales) from $872$879 million (or 50.8%50.9% of sales) for the same period one year ago, representing an increase of 9%10%. Gross profit for the sixnine months ended JuneSeptember 30, 2014, increased to $1.83$2.80 billion (or 51.1%51.3% of sales) from $1.67$2.55 billion (or 50.6%50.7% of sales) for the same period one year ago, representing an increase of 9%10%. The increase in gross profit dollars for the three and sixnine months ended JuneSeptember 30, 2014, was primarily a result of the increase in comparable store sales at existing stores and sales from new stores. The increase in gross profit as a percentage of sales for the three and six months ended JuneSeptember 30, 2014, was primarily due to product acquisition cost improvements, a lesser impact from non-cash LIFO charges resulting from continued product acquisition cost reductions and a greater benefit from capitalized warehouse costs. The increase in gross profit as a percentage of sales for the nine months ended September 30, 2014, was primarily due to product acquisition cost improvements, partially offset by the larger year-to-date non-cash LIFO impact resulting from continued product acquisition cost reductions. Acquisition cost improvements are the result of our ongoing negotiations with our vendors to improve our inventory purchase

costs. As previously discussed, during the third quarter of 2013, we depleted our LIFO reserve due to acquisition cost improvements we realized over time. Our policy is to not write up inventory in excess of replacement cost and, accordingly, we are effectively valuing our inventory at replacement cost. During the three and sixnine months ended JuneSeptember 30, 2014, our LIFO cost was written down by approximately $4$6 million and $27$34 million, respectively, to reflect replacement cost. ForThe increase in capitalized distribution costs is the remainderresult of a larger increase in inventory levels during the year ending December 31, 2014, we do anticipate additional product acquisition cost reductions based on current negotiations with vendors, which, if finalized, could create additional LIFO gross margin headwinds.period compared to the same period in the prior year. The increase in inventory is primarily attributable to our distribution center expansion projects.

Selling, general and administrative expenses (“SG&A”) for the three months ended JuneSeptember 30, 2014, increased to $614$624 million (or 33.3% of sales) from $576$579 million (or 33.6%33.5% of sales) for the same period one year ago, representing an increase of 7%8%. SG&A for the sixnine months ended JuneSeptember 30, 2014, increased to $1.20$1.83 billion (or 33.7%33.6% of sales) from $1.12$1.70 billion (or 34.0%33.8% of sales) for the same period one year ago, representing an increase of 7%. The increaseincreases in total SG&A dollars for the three and sixnine months ended JuneSeptember 30, 2014, were primarily the result of additional Team Members, facilities and vehicles to support our increased store count. The decreasedecreases in SG&A as a percentage of sales for the three and sixnine months ended JuneSeptember 30, 2014, were primarily the result of increased leverage of store occupancy costs on strong comparable store sales results.

As a result of the impacts discussed above, operating income for the three months ended JuneSeptember 30, 2014, increased to $336$344 million (or 18.2%18.3% of sales) from $296$300 million (or 17.3%17.4% of sales) for the same period one year ago, representing an increase of 14%. Operating income for the sixnine months ended JuneSeptember 30, 2014, increased to $624$967 million (or 17.4%17.7% of sales) from $547$848 million (or 16.6%16.9% of sales) for the same period one year ago, representing an increase of 14%.

Total other expense for the three months ended JuneSeptember 30, 2014, increaseddecreased to $12$11 million (or 0.6% of sales), from $10$12 million (or 0.7% of sales) for the same period one year ago, representing an decrease of 5%. Total other expense for the nine months ended September 30, 2014, increased to $35 million (or 0.6% of sales) from $33 million (or 0.6% of sales) for the same period one year ago, representing an increase of 15%8%. TotalThe decrease in total other expense forduring the sixthree months ended JuneSeptember 30, 2014,3014, was primarily the result of increased to $24 million (or 0.7% of sales) from $21 million (or 0.6% of sales) forcapitalized interest during the same period one year ago, representing an increase of 16%.current period. The increase in total other expense during the nine months ended September 30, 2014, was primarily the result of increased interest expense on higher average outstanding borrowings.

Our provision for income taxes for the three months ended JuneSeptember 30, 2014, increased to $119$115 million (or 6.5%6.1% of sales) from $109$102 million (or 6.4%5.9% of sales) for the same period one year ago, representing an increase of 9%13%. Our provision for income taxes for the sixnine months ended JuneSeptember 30, 2014, increased to $220$336 million (or 6.2% of sales) from $195$297 million (or 5.9% of sales) for the same period one year ago, representing an increase of 13%. Our effective tax rate for the three months ended JuneSeptember 30, 2014, was 36.7%34.7% of income before income taxes compared to 38.1%35.3% for the same period one year ago. Our effective tax rate for the sixnine months ended JuneSeptember 30, 2014, was 36.7%36.0% of income before income taxes compare to 37.1%36.5% for the same period one year ago. The increaseincreases in our provision for income taxes for the three and sixnine months ended JuneSeptember 30, 2014, were primarily the result of higher taxable income in the current period, driven by our strong operating results. The decreasedecreases in our effective tax raterates for the three and sixnine months ended JuneSeptember 30, 2014, waswere primarily due to an increased benefitbenefits from employment tax credits in the current period.periods.

As a result of the impacts discussed above, net income for the three months ended JuneSeptember 30, 2014, increased to $206$217 million (or 11.1%11.6% of sales), from $177$186 million (or 10.3%10.8% of sales) for the same period one year ago, representing an increase of 16%. As a result of the impacts discussed above, net income for the sixnine months ended JuneSeptember 30, 2014, increased to $380$597 million (or 10.6%10.9% of sales) from $331$518 million (or 10.0%10.3% of sales) for the same period one year ago, representing an increase of 14%15%.

Our diluted earnings per common share for the three months ended JuneSeptember 30, 2014, increased 21%22% to $1.91$2.06 on 108105 million shares from $1.58$1.69 on 112110 million shares for the same period one year ago. Our diluted earnings per common share for the sixnine months ended JuneSeptember 30, 2014, increased 20%21% to $3.52$5.58 on 108107 million shares versus $2.94$4.63 for the same period one year ago on 113112 million shares.

Our long-term business strategy requires capital to open new stores, fund strategic acquisitions, expand distribution infrastructure, operate and maintain existing stores and may include the opportunistic repurchase of shares of our common stock through our Board-approved share repurchase program. The primary sources of our liquidity are funds generated from operations and borrowed under our unsecured revolving credit facility. Decreased demand for our products or changes in customer buying patterns could negatively impact our ability to generate funds from operations. Additionally, decreased demand or changes in buying patterns could impact our ability to meet the debt covenants of our credit agreement and, therefore, negatively impact the funds available under our unsecured revolving credit facility.

We believe that cash expected to be provided by operating activities and availability under our unsecured revolving credit facility will be sufficient to fund both our short-term and long-term capital and liquidity needs for the foreseeable future. However, there can be no assurance that we will continue to generate cash flows at or above recent levels.

The following table identifies cash provided by/(used in) our operating, investing and financing activities for the sixnine months ended JuneSeptember 30, 2014 and 2013 (in thousands):

The increase in net cash provided by operating activities during the sixnine months ended JuneSeptember 30, 2014, compared to the same period in 2013, was primarily due to larger increases in net income, accountsincome taxes payable (adjusted for the effect of non-cash change in deferred income taxes and the excess tax benefit from stock options exercised) and accrued payroll relatedpayroll-related liabilities and a greater decrease in cash usednet inventory investment in accounts receivable. The increase in accounts payable during the current period as compared to the same period in the prior year,year. Net inventory investment reflects our investment in inventory, net of the amount of accounts payable to vendors. Our accounts payable to inventory ratio was 95.7% and 86.6% at September 30, 2014, and December 31, 2013, respectively, versus 87.8% and 84.7% at September 30, 2013, and December 31, 2012, respectively. The larger increase in our accounts payable to inventory ratio was driven by an increased levelcontinued strong vendor support. The larger increase in income taxes payable, adjusted for the non-cash impacts discussed above, was primarily the result of inventory purchases duringa prepaid tax position at the current period, resulting from our strong sales performance andend of 2013 versus a payable position at the timingend of payments.2012. The increase in accrued payroll-related liabilities during the period, as compared to the same period in the prior year, was due to the timing of pay period end dates versus check dates. The decrease in cash used in accounts receivable during the period, as compared to the same period in the prior year, was due to the timing of period ending dates. During the prior year, the period ended on a weekend, and as such we did not process payments on accounts, resulting in a temporary increase in our accounts receivable balances in the prior period.under certain benefit plans.

The increase in net cash used in investing activities during the sixnine months ended JuneSeptember 30, 2014, compared to the same period in 2013, was primarily the result of an increase in capital expenditures during the current period related to the constructionmix of distribution facilitiesowned versus leased new store projects as compared to support our ongoing store growth.the same period in the prior year.

The increase in net cash used in financing activities during the sixnine months ended JuneSeptember 30, 2014, compared to the same period in 2013, was primarily attributable to the net proceeds from the issuance of long-term debt in the prior period, offset by the impact of fewer repurchases of our common stock during the current period under our share repurchase program.period.

In January of 2011, and as amended in September of 2011 and July of 2013, we entered into a credit agreement (the "Credit Agreement") for a five-year $600 million unsecured revolving credit facility (the "Revolving Credit Facility") arranged by Bank of America, N.A., which is scheduled to mature in July of 2018. The Credit Agreement includes a $200 million sub-limit for the issuance of letters of credit and a $75 million sub-limit for swing line borrowings under the Revolving Credit Facility. As described in the Credit Agreement governing the Revolving Credit Facility, we may, from time to time, subject to certain conditions, increase the aggregate commitments under the Revolving Credit Facility by up to $200 million. As of JuneSeptember 30, 2014, we had outstanding letters of credit, primarily to support obligations related to workers’ compensation, general liability and other insurance policies, in the amount of $48 million, reducing the aggregate availability under the Revolving Credit Facility by that amount. As of JuneSeptember 30, 2014, we had no outstanding borrowings under the Revolving Credit Facility.

We have issued $1.4 billion aggregate principal amount of unsecured senior notes due between 2021 and 2023 with United Missouri Bank, N.A. ("UMB") as trustee. Interest on the unsecured senior notes of 3.800% to 4.875% is payable biannually and is computed on the basis of a 360-day year.

The senior notes are guaranteed on a senior unsecured basis by each of our subsidiaries (“Subsidiary Guarantors”) that incurs or guarantees our obligations under our Revolving Credit Facility or certain of our other debt or any of our Subsidiary Guarantors. The guarantees are joint and several and full and unconditional, subject to certain customary automatic release provisions, including release of the subsidiary guarantor’s guarantee under our Credit Agreement and certain other debt, or, in certain circumstances, the sale or other disposition of a majority of the voting power of the capital interest in, or of all or substantially all the property of, the subsidiary guarantor.  Each of the

The indentures governing our senior notes contain covenants that limit our ability and the ability of certain of our subsidiaries to, among other things: (i) create certain liens on assets to secure certain debt; (ii) enter into certain sale and leaseback transactions; and (iii) merge or consolidate with another company or transfer all or substantially all of our or its property, in each case as set forth in the indentures. These covenants are, however, subject to a number of important limitations and exceptions.

The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.25 times through December 31, 2014, and 2.50 times thereafter through maturity, and a maximum consolidated leverage ratio of 3.00 times through maturity. The consolidated leverage ratio includes a calculation of adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and stock-based compensation expense (“EBITDAR”). Adjusted debt includes outstanding debt, outstanding stand-by letters of credit and similar instruments, six-times rent expense and excludes any premium or discount recorded in conjunction with the issuance of long-term debt. In the event that we should default on any covenant contained within the Credit Agreement, certain actions may be taken, including, but not limited to, possible termination of credit extensions, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from our lenders. We had a consolidated fixed charge coverage ratio of 5.135.24 times and 4.934.95 times as of JuneSeptember 30, 2014 and 2013, respectively, and a consolidated leverage ratio of 1.811.77 times and 1.981.94 times as of JuneSeptember 30, 2014 and 2013, respectively, remaining in compliance with all covenants related to the borrowing arrangements. Under our current financing plan, we have targeted an adjusted debt to adjusted EBITDAR ratio range of 2.00 times to 2.25 times.

The table below outlines the calculations of the consolidated fixed charge coverage ratio and consolidated leverage ratio covenants, as defined in the Credit Agreement governing the Revolving Credit Facility, for the twelve months ended JuneSeptember 30, 2014 and 2013 (dollars in thousands):

TheFree cash flow, the consolidated fixed charge coverage ratio and consolidated leverage ratio discussed and presented in the tabletables above are not derived in accordance with United States generally accepted accounting principles ("GAAP"). We do not, nor do we suggest investors should, consider such non-GAAP financial measures in isolation from, or as a substitute for, GAAP financial information. We believe that the presentation of our free cash flow, consolidated fixed charge coverage ratio and consolidated leverage ratio and free cash flow provides meaningful supplemental information to both management and investors thatand reflects the required covenants under our credit agreement. We include these items in judging our performance and believe this non-GAAP information is useful to investors as well. Material limitations of these non-GAAP measures are that such measures do not reflect actual GAAP amounts. We compensate for such limitations by presenting, in the tables above, a reconciliation to the most directly comparable GAAP measures.

Under our share repurchase program, as approved by our Board of Directors, we may, from time to time, repurchase shares of our common stock, solely through open market purchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate trading policy requirements and overall market conditions. We may increase or otherwise modify, renew, suspend or terminate the share repurchase program at any time, without prior notice. As announced on February 5, 2014, our Board of Directors approved a resolution to increase the cumulative authorization amount by an additional $500 million raisingand, as announced on August 13, 2014, our Board of Directors approved a resolution to increase the cumulative authorization under the share repurchase programamount by an additional $500 million to $4.0$4.5 billion. The additional $500 million authorization isauthorizations are each effective for a three-year period,periods, which began on February 5, 2014.2014, and August 13, 2014, respectively.

The following table identifies shares of our common stock that have been repurchased as part of our publicly announced share repurchase program (in thousands, except per share data):

As of JuneSeptember 30, 2014, we had $346$459 million remaining under our share repurchase program. Subsequent to the end of the secondthird quarter and through August 8,November 7, 2014, we repurchased an additional 1.21.1 million shares of our common stock under our share repurchase program, at an average price of $151.00,$151.05, for a total investment of $178$172 million. We have repurchased a total of 43.846.3 million shares of our common stock under our share repurchase program since the inception of the program in January of 2011 and through August 8,November 7, 2014, at an average price of $87.47,$90.99, for a total aggregate investment of $3.8$4.2 billion.

There have been no material changes to the contractual obligations to which we are committed since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2013.

The preparation of our financial statements in accordance with U.S. GAAP requires the application of certain estimates and judgments by management. Management bases its assumptions, estimates, and adjustments on historical experience, current trends and other factors believed to be relevant at the time the condensed consolidated financial statements are prepared. There have been no material changes in the critical accounting estimates since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2013.

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 increased 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 inflation has had a material adverse effect on our operations.

To some extent, our business is seasonal primarily as a result of the impact of weather conditions on customer buying patterns. While we have historically realized operating profits in each quarter of the year, our 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.

In May of 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standard No. 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09"). Under ASU 2014-09, an entity is required to follow a five-step process to determine the amount of revenue to recognize when promised goods or services are transferred to customers. ASU 2014-09 offers specific accounting guidance for costs to obtain or fulfill a contract with a customer. In addition, an entity is required to disclose sufficient information to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including periods within that reporting period, and can be adopted either retrospectively or as a cumulative effect adjustment at the date of adoption, with early adoption not permitted. We will adopt this guidance beginning with our first quarter ending March 31,d31, 2017; we are in the process of evaluating the potential future impact, if any, of ASU 2014-09 on our consolidated financial position, results of operations and cash flows.

We are subject to interest rate risk to the extent we borrow against our unsecured revolving credit facility (the “Revolving Credit Facility”) with variable interest rates based on either a Base Rate or Eurodollar Rate, as defined in the credit agreement governing the Revolving Credit Facility. As of JuneSeptember 30, 2014, we had no outstanding borrowings under our Revolving Credit Facility.

We invest certain of our excess cash balances in short-term, highly-liquid instruments with maturities of 90 days or less. We do not expect any material losses from our invested cash balances and we believe that our interest rate exposure is minimal. As of JuneSeptember 30, 2014, our cash and cash equivalents totaled $453$298 million.

Our market risks have not materially changed since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2013.

As of the end of the period covered by this report, our management, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(b) and as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934, as amended (“the Exchange Act”). Based on that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that our disclosure controls and procedures as of the end of the period covered by this report are functioning effectively to provide reasonable assurance that the information required to be disclosed by us (including our consolidated subsidiaries) in reports filed under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

There were no changes in our internal control over financial reporting during the fiscal quarter ending JuneSeptember 30, 2014, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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 was involved in resolving governmental investigations that were being conducted against CSK Auto Corporation ("CSK") and CSK’s former officers and other litigation, prior to its acquisition by O’Reilly in 2008, as described below.

As previously reported, the governmental investigations of CSK regarding its legacy pre-acquisition accounting practices have concluded. All criminal charges against former employees of CSK related to its legacy pre-acquisition accounting practices, as well as the civil litigation filed against CSK’s former Chief Executive Officer by the Securities and Exchange Commission (the “SEC”), have concluded.

Under Delaware law, the charter documents of the CSK entities and certain indemnification agreements, CSK may have certain indemnification obligations. As a result of the CSK acquisition, O’Reilly has incurred legal fees and costs related to these potential indemnification obligations arising from the litigation commenced by the Department of Justice and SEC against CSK’s former employees. Whether those legal fees and costs are covered by CSK’s insurance is subject to uncertainty, and, given its complexity and scope, the final outcome cannot be predicted at this time. O’Reilly has a remaining reserve, with respect to the indemnification obligations of $13$12 million at JuneSeptember 30, 2014, which relates to the payment of those legal fees and costs already incurred. 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 resolution of such 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 this matter, after consideration of applicable reserves, should not have a material adverse effect on the Company’s consolidated financial condition, results of operations or cash flows.

As of JuneSeptember 30, 2014, there have been no material changes in our risk factors since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2013.

There were no sales of unregistered securities during the three or sixnine months ended JuneSeptember 30, 2014. The following table identifies all repurchases during the three months ended JuneSeptember 30, 2014, of any of our securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, by or on behalf of us or any affiliated purchaser (in thousands, except per share amounts):

Subsequent to the end of the secondthird quarter and through August 8,November 7, 2014, we repurchased an additional 1.21.1 million shares of our common stock under our share repurchase program, at an average price of $151.00,$151.05, for a total investment of $178$172 million. We have repurchased

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.