Consumer Cyclicals Fiscal

Retail-Eating Places Industry Restaurants & Bars

Sector Consumer Cyclicals Fiscal Year 08/16

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended: August 31, 2017

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______________ to ________________

Commission File Number 0-18859

SONIC CORP. (Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization)

73-1371046

(I.R.S. Employer Identification No.)

300 Johnny Bench Drive

Oklahoma City, Oklahoma (Address of principal executive offices)

73104 (Zip Code)

Registrant’s telephone number, including area code: (405) 225-5000

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

None

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

Common Stock, Par Value $.01 (Title of class)

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

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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 ☒

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 the reports), and (2) has been subject to the filing requirements for the past 90 days. Yes ☒ No ☐

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

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

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

Large accelerated filer ☒ Accelerated filer ☐ Non-accelerated filer ☐ (Do no check if a smaller reporting company) Smaller reporting company ☐ Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

As of February 28, 2017 , the aggregate market value of the 41,193,789 shares of common stock of the Company held by non-affiliates of the Company equaled $1,041,378,896 based on the closing sales price for the common stock as reported for that date.

As of October 13, 2017 , the Registrant had 40,250,461 shares of common stock issued and outstanding.

Documents Incorporated by Reference

Part III of this report incorporates by reference certain portions of the definitive proxy statement which the Registrant will file with the Securities and Exchange Commission no later than 120 days after August 31, 2017 .

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FORM 10-K OF SONIC CORP.

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PART I Item 1. Business 1 Item 1A. Risk Factors 5 Item 1B. Unresolved Staff Comments 10 Item 2. Properties 11 Item 3. Legal Proceedings 11 Item 4. Mine Safety Disclosures 11 Item 4A. Executive Officers of the Company 12

PART II Item 5. Market for the Company’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities 14 Item 6. Selected Financial Data 15 Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations 16 Item 7A. Quantitative and Qualitative Disclosures About Market Risk 28 Item 8. Financial Statements and Supplementary Data 29 Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 29 Item 9A. Controls and Procedures 29 Item 9B. Other Information 32

PART III Item 10. Directors, Executive Officers and Corporate Governance 32 Item 11. Executive Compensation 32 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 32 Item 13. Certain Relationships and Related Transactions, and Director Independence 32 Item 14. Principal Accounting Fees and Services 32

PART IV Item 15. Exhibits and Financial Statement Schedules 33

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FORM 10-K

SONIC CORP.

PART I

Item 1. Business

Overview

Sonic Corp., through its subsidiaries, operates and franchises the largest chain of drive-in restaurants (“Sonic Drive-Ins”) in the United States. References to “Sonic Corp.,” “Sonic,” “the Company,” “we,” “us” and “our” in this Form 10-K are references to Sonic Corp. and its subsidiaries.

The first Sonic Drive-In restaurant opened in 1953. As of the end of our fiscal year on August 31, 2017 , the Sonic system included 3,593 Sonic Drive-Ins in 45 states of which 3,365 were owned and operated by franchisees (“Franchise Drive-Ins”) and 228 were owned and operated by Sonic Restaurants, Inc., the Company’s operating subsidiary (“Company Drive-Ins”).

Sonic Corp. was incorporated in the State of Delaware in 1990 in connection with its 1991 initial public offering of common stock. Sonic is publicly traded on the NASDAQ National Market Stock Exchange (“NASDAQ”) (Ticker: SONC).

Restaurant Design and Construction

The typical Sonic Drive-In consists of a kitchen housed in a one-story building, which is approximately 1,500 square feet, flanked by canopy-covered rows of 16 to 24 parking spaces, with each space having its own payment terminal, intercom speaker system and menu board. At a typical Sonic Drive-In, a customer drives into one of the parking spaces, orders through the intercom speaker system and has the food delivered by a carhop. Many Sonic Drive‑Ins also include a drive-thru lane and patio seating to provide customers with alternative dining options.

Sonic maintains a highly diverse menu. The menu strategy is to provide a broad range of items that appeal to target customer segments across different day- parts. The menu includes a variety of traditional and healthier choices as well as creative and fun items. Sonic’s signature food items include specialty drinks (such as cherry limeades and slushes), ice cream desserts, made-to-order cheeseburgers, chicken entrees ranging from sandwiches to boneless wings, a variety of hot dogs including six-inch premium beef hot dogs and footlong quarter-pound coneys, hand-made onion rings and tater tots. Sonic Drive-Ins also offer breakfast items that include a variety of breakfast burritos and serve the full menu all day.

Strategy

Sonic’s strategy is to deliver a differentiated and high quality customer service experience. The key elements of our strategy are:

• A distinctive drive-in concept focusing on a unique menu of quality, made-to-order food products including several signature items and innovative technology;

• A commitment to customer service featuring the quick delivery of food by friendly carhops; • Integrated national marketing programs across media channels, including broadcast, digital and mobile; and • A commitment to strong franchisee relationships.

Sonic’s brand growth strategies include the following:

• Same-store sales growth; • Improved performance of Company Drive-Ins, including consistent operations execution and restaurant-level margins; and • Expansion of Sonic Drive-Ins.

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Expansion

During fiscal year 2017 , we opened 66 Sonic Drive-Ins, which consisted of 63 Franchise Drive-Ins and three Company Drive-Ins. Expansion plans for fiscal year 2018 involve the opening of multiple Sonic Drive-Ins under development agreements, as well as single-store development by new and existing franchisees. We believe that our existing as well as newly opened markets offer significant growth opportunities over the long term.

Marketing

We have a fully integrated marketing strategy that includes a national advertising campaign. We have designed this marketing program to differentiate Sonic Drive-Ins from our competitors by emphasizing high-quality, distinctive, made-to-order menu items and personalized service featuring friendly carhops. We support promotions with television, radio, digital media, point-of-sale materials and other communications as appropriate. Those promotions generally highlight limited-time products and signature menu items.

Each year, Sonic develops a marketing plan with the involvement of the Sonic Franchise Advisory Council. (Information concerning the Sonic Franchise Advisory Council is set forth on page 3 under Franchise Program – Franchise Advisory Council .) Funding for our marketing plan is provided by the System Marketing Fund, the Sonic Brand Fund and local advertising expenditures. The System Marketing Fund primarily focuses on purchasing advertising on national cable and broadcast networks and other national media, sponsorship and brand enhancement opportunities. The Sonic Brand Fund supports national media production as well as other programs designed to promote or enhance the Sonic brand. Our license agreements require advertising contributions of up to 5.9% of sales to these marketing funds and local advertising cooperatives.

Purchasing

We negotiate with suppliers for primary food products and packaging supplies for the system and seek competitive bids from suppliers on many of our food and packaging items. Approved suppliers of those products are required to adhere to our established product and food safety specifications. Suppliers manufacture several key products for Sonic under private label and sell them to authorized distributors for resale to Sonic Drive-Ins. All Sonic Drive-Ins are required to purchase from approved distributors.

Food Safety and Quality Assurance

To ensure the consistent delivery of safe, high-quality food, we created a food safety and quality assurance program. Sonic’s food safety program promotes the quality and safety of all products and procedures utilized by all Sonic Drive-Ins and provides certain requirements that must be adhered to by all suppliers, distributors and Sonic Drive-Ins. Our comprehensive, restaurant-based food safety program is called Sonic Safe. Sonic Safe is a risk-based system that utilizes Hazard Analysis & Critical Control Points (“HACCP”) principles for managing food safety and quality. Our food safety program includes components to monitor and ensure the safety and quality of Sonic’s products and procedures at every stage of the food preparation and production cycle including, but not limited to, employee training, supplier product inspections and testing and unannounced drive-in food safety audits by independent third parties. All Sonic Drive-In employees are required to receive food safety training, utilizing an internal training program. This program includes specific training on food safety information and requirements for every station in the drive-in. We also require our drive-in managers and assistant managers to pass and maintain the ServSafe® certification. ServSafe® is the most recognized food safety training certification in the restaurant industry.

Information Systems

Sonic Drive-Ins are equipped with information technology systems including point-of-sale systems and operational tools for sales, labor and inventory. This technology includes industry-specific, off-the-shelf systems as well as proprietary software that assist in managing food and beverage costs. These solutions are integrated with our point-of-sale systems to provide information that is important for managers to run efficient and effective operations. We have centralized financial and accounting systems for Company Drive-Ins. We also have systems that receive transaction-level data from Franchise Drive-Ins. We believe these systems are important in analyzing and improving sales and profit margins and accumulating marketing information. We are also making strategic investments in customer facing digital technologies, including interactive menu boards, a multi-functional mobile application and electronic payment at the stall to enhance the customer’s experience and drive sales. We have further invested in new point-of-sale systems. Our license agreements require a technology contribution of approximately .25% of sales to the Brand Technology Fund (“BTF”), which was established in the third quarter of fiscal year 2016 and administers cybersecurity and other technology programs for the Sonic system.

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Franchise Program

General . As of August 31, 2017 , we had 3,365 Franchise Drive-Ins in operation. A large number of successful multi-unit franchise groups have developed during the Sonic system’s more than 60 years of operation. Those franchisees continue to develop new Franchise Drive-Ins either through development agreements or single-site development. Our franchisees opened 63 drive-ins during fiscal year 2017 . We consider our franchisees a vital part of our continued growth and believe our relationship with our franchisees is good.

Franchise Agreements . For traditional drive-ins, the current franchise agreement provides for a franchise fee of $45,000 per drive-in, a royalty fee of up to 5% of sales on a graduated percentage basis and a 20-year term. For fiscal year 2017 , Sonic’s average royalty rate was 4.12% . The franchisee also pays advertising fees of up to 5.9% of sales and a technology fee of approximately 0.25% of sales.

Development Agreements . We use single and multiple unit development agreements for opening new drive-ins. During fiscal year 2017 , almost all of our new Franchise Drive-In openings occurred as a result of existing development agreements. Each development agreement gives a developer the exclusive right to construct, own and operate Sonic Drive-Ins within a defined area. In exchange, each developer agrees to open a minimum number of Sonic Drive-Ins in the area within a prescribed time period. Franchisees who enter into development agreements typically pay a fee, which is credited against franchise fees due when Sonic Drive-Ins are opened in the future. Franchisees may forfeit such fees and lose their rights to future development if they do not maintain the required schedule of openings.

Franchise Drive-In Development . We assist each franchisee in selecting sites and developing Sonic Drive‑Ins. Each franchisee has responsibility for selecting the franchisee’s drive-in location but must obtain our approval of each Sonic Drive-In design and each location based on accessibility and visibility of the site and targeted demographic factors, including population density, income, age and traffic. We provide our franchisees with the physical specifications for the typical Sonic Drive-In.

Franchise Advisory Council . Our Franchise Advisory Council provides advice, counsel and input to Sonic on important issues impacting the business, such as marketing and promotions, new products, operations, profitability, technology and training. The Franchise Advisory Council currently consists of 26 members selected by Sonic. We have seven executive committee members who are selected at large and 19 regional members representing all regions of the country. We also have four Franchise Advisory Council task groups comprised of 58 members who generally serve three-year terms and provide support on individual key priorities.

Franchise Drive-In Data. The following table provides certain financial information relating to Franchise Drive-Ins and the number of Franchise Drive-Ins opened, purchased from or sold to Sonic and closed during Sonic’s last five fiscal years. The table should be read in conjunction with the information in our Management’s Discussion and Analysis of Financial Condition and Results of Operations in Part II, Item 7.

2017 2016 2015 2014 2013 Average sales per Franchise Drive-In $ 1,260 $ 1,301 $ 1,261 $ 1,170 $ 1,125

( In thousands ) Number of Franchise Drive-Ins:

Total open at beginning of year 3,212 3,139 3,127 3,126 3,147 New Franchise Drive-Ins 63 52 38 37 25 Sold to the Company — — (3) — (1) Purchased from the Company 117 38 9 7 — Closed (net of re-openings) (27) (17) (32) (43) (45)

Total open at end of year 3,365 3,212 3,139 3,127 3,126

Company Operations

Management Structure. A typical Company Drive-In is operated by a manager, two to four assistant managers and approximately 25 hourly employees, some of whom work part-time. The manager has responsibility for the day-to-day operations of the Company Drive-In. Supervisors oversee several Company Drive- Ins and supervise the managers of those drive-ins. The employee compensation program at Company Drive-Ins for managers and supervisors is comprised of a guaranteed base compensation with additional incentive compensation based on customer satisfaction, employee turnover and drive-in level financial performance.

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Company Drive-In Data . The following table provides certain financial information relating to Company Drive-Ins and the number of Company Drive-Ins opened, purchased from or sold to franchisees and closed during the past five fiscal years and should be read in conjunction with the information in our Management’s Discussion and Analysis of Financial Condition and Results of Operations in Part II, Item 7.

2017 2016 2015 2014 2013 Average sales per Company Drive-In $ 1,134 $ 1,142 $ 1,116 $ 1,043 $ 990

( In thousands ) Number of Company Drive-Ins:

Total open at beginning of year 345 387 391 396 409 New Company Drive-Ins 3 1 3 3 2 Purchased from franchisees — — 3 — 1 Sold to franchisees (117) (38) (9) (7) — Closed (net of re-openings) (3) (5) (1) (1) (16)

Total open at end of year 228 345 387 391 396

Competition

We compete in the restaurant industry, specifically in the segment known as quick-service restaurants (“QSR”), which is highly competitive in terms of price, service, location and food quality. The restaurant industry is often affected by changes in consumer trends, economic conditions, demographics and traffic patterns. We compete on the basis of distinctive food and service with signature food items, friendly carhops and the method of food preparation (made-to-order and personalized). Our drive-in format combined with the quality of service, featuring Sonic carhops, constitutes one of our primary marketable points of difference from the competition. There are many well-established competitors with substantially greater financial and other resources. These competitors include a large number of national, regional and local food service establishments, including QSRs, casual-dining restaurants and convenience stores. A significant change in market conditions or in pricing or other marketing strategies by one or more of Sonic’s competitors could have an adverse impact on Sonic’s sales, earnings and growth. Furthermore, the restaurant industry has few barriers to entry, and new competitors may emerge at any time. In selling franchises, we compete with many franchisors of QSR and other restaurants, in addition to franchisors of other business opportunities.

Seasonality

Our sales and earnings results during Sonic’s second fiscal quarter (the months of December, January and February) generally are lower than other quarters because of colder and more volatile weather in the locations of a number of Sonic Drive-Ins.

Employees

As of August 31, 2017 , we had 373 full-time corporate employees and approximately 5,800 full-time and part-time employees at Company Drive-Ins. None of our employees are subject to a collective bargaining agreement. We believe that we have good labor relations with our employees.

Intellectual Property

Sonic owns or is licensed to use valuable intellectual property including trademarks, service marks, patents, copyrights, trade secrets and other proprietary information, including the “Sonic” logo and trademark, which are of material importance to our business. Depending on the jurisdiction, trademarks and service marks generally are valid as long as they are used and/or registered. Patents, copyrights and licenses are of varying durations.

Customers

Our business is not dependent upon either a single customer or a small group of customers.

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Government Contracts

No portion of our business is subject to renegotiation of profits or termination of contracts or subcontracts at the election of the U.S. government.

Government Regulation

Our restaurants are subject to licensing and regulation by state and local health, safety, fire and other authorities, including licensing requirements and regulations for the sale of food. The development and construction of new restaurants is subject also to compliance with applicable zoning, land use and environmental regulations. We are also subject to federal regulation and state laws that regulate the offer and sale of franchises and substantive aspects of the franchisor-franchisee relationship. Various federal and state labor laws govern our relationship with our employees and affect operating costs. These laws govern minimum wage requirements, overtime pay, meal and rest breaks, unemployment tax rates, health care and benefits, workers’ compensation rates, citizenship or residency requirements, child labor regulations and discriminatory conduct. Federal, state and local government agencies have established regulations requiring that we disclose to our customers nutritional information regarding our menu items. We have processes in place to monitor compliance with applicable laws and regulations governing our operations.

Environmental Matters

We are not aware of any federal, state or local environmental laws or regulations that will materially affect our earnings or competitive position or result in material capital expenditures. However, we cannot predict the effect on operations of possible future environmental legislation or regulations. During fiscal year 2017 , there were no material capital expenditures for environmental control facilities and no such material expenditures are anticipated.

Available Information

We maintain a website with the address of www.sonicdrivein.com . Copies of the Company’s reports filed with, or furnished to, the Securities and Exchange Commission on Forms 10-K, 10-Q and 8-K and any amendments to such reports are available for viewing and copying at such website, free of charge, as soon as reasonably practicable after filing such material with, or furnishing it to, the Securities and Exchange Commission. In addition, copies of Sonic’s corporate governance materials, including the Corporate Governance Guidelines, Audit Committee Charter, Compensation Committee Charter, Nominating and Corporate Governance Committee Charter, Code of Ethics for Financial Officers and Code of Business Conduct and Ethics are available for viewing and copying at the website, free of charge.

Forward-Looking Information

This Annual Report on Form 10-K includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, principally in the sections captioned “Business,” “Legal Proceedings” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” A forward-looking statement is neither a prediction nor a guarantee of future events or circumstances, and those future events or circumstances may not occur. In some cases, forward-looking statements can be identified by words such as “anticipate,” “estimate,” “expect,” “goals,” “guidance,” “plan,” “may,” “will,” “would” and similar expressions. Investors should not place undue reliance on the forward-looking statements, which speak only as of the date of this report. These forward-looking statements are all based on currently available operating, financial and competitive information and are subject to various risks and uncertainties. Our actual future results and trends may differ materially depending on a variety of factors including, but not limited to, the risks and uncertainties discussed below. We undertake no obligation to publicly update or revise them, except as may be required by law.

Item 1A. Risk Factors

We caution you that our business and operations are subject to a number of risks and uncertainties. The factors listed below are important factors that could cause our actual results to differ materially from our historical results and from projections in forward-looking statements contained in this report, in our other filings with the Securities and Exchange Commission, in our news releases and in oral statements by our representatives. However, other factors that we do not anticipate or that we do not consider significant based on currently available information may also have an adverse effect on our results.

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Events reported in the media, including social media, such as incidents involving food-borne illnesses, food contamination or food tampering, whether or not accurate, can cause damage to our reputation and rapidly affect sales and profitability.

Reports, whether true or not, of food-borne illnesses, food contamination or food tampering have in the past severely injured the reputations of participants in the restaurant industry and could affect us in the future. The potential for terrorism affecting our nation’s food supply also exists and, if such an event occurs, it could have a negative impact on our brand’s reputation and could severely hurt sales, revenues and profits. Our ability to remain a trusted brand and increase sales and profits depends on our ability to manage the potential impact on Sonic of actual or reports of food safety issues. Our food safety and quality assurance program minimizes food safety risks. Nevertheless, these risks cannot be completely eliminated. Any food safety incident attributed to our restaurants or within the food service industry, or any widespread negative publicity regarding our brand or the restaurant industry in general, could materially harm our brand, including sales and profitability.

The restaurant industry is highly competitive, and that competition could lower our revenues, margins and market share.

The restaurant industry is intensely competitive with respect to price, service, location, personnel, dietary trends, including nutritional content of quick-service foods, and quality of food and is often affected by changes in consumer tastes and preferences, economic conditions, population and traffic patterns. We compete with international, regional and local restaurants, some of which operate more restaurants and have greater financial resources. We compete primarily through the quality, price, variety and value of food products offered and our distinctive service experience. Other key competitive factors include the number and location of restaurants, speed of service, attractiveness of facilities, effectiveness of advertising and marketing programs and new product development by us and our competitors. We cannot ensure that we will compete successfully in the restaurant industry on these factors. In addition, some of our competitors have substantially larger marketing budgets, which may provide them with a competitive advantage. Our system also competes within the QSR industry not only for customers but also for management and hourly employees, suitable real estate sites and qualified franchisees.

Changing dietary preferences may cause consumers to avoid our products in favor of alternative foods.

The restaurant industry is affected by consumer preferences and perceptions. Although we monitor these changing preferences and strive to adapt to meet changing consumer needs, the growth of our brand and, ultimately, system sales depend on the sustained demand for our products. If dietary preferences and perceptions cause consumers to avoid certain products offered by Sonic Drive-Ins in favor of different foods, demand for our products may be reduced and our business could be harmed.

Our earnings and business growth strategy depends in large part on the success of our franchisees, who exercise independent control of their businesses.

A significant percentage of restaurants are owned and operated by our franchisees. A portion of our earnings comes from royalties, rents and other amounts paid by our franchisees. Franchisees are independent businesses, and their employees are not our employees. To help ensure compliance with brand standards we provide appropriate training and support to, and monitor the operations of, our franchisees, but the quality of their drive-in operations may be diminished by any number of factors beyond our control. Franchisees may not successfully operate drive-ins in a manner consistent with our high standards and requirements, and they may not invest in facilities and initiatives as necessary to compete successfully in the restaurant industry. In addition, franchisees may not hire and train qualified managers and other restaurant personnel and may not adequately plan for and train their own successors. Consumers could perceive an operational shortcoming of a Franchise Drive-In as a reflection of the entire Sonic brand, thus damaging our reputation and potentially affecting revenues and profitability.

Changes in economic, market and other conditions could adversely affect Sonic and its franchisees, and thereby Sonic’s operating results.

The QSR industry is affected by changes in economic conditions, consumer tastes and preferences, spending patterns, demographic trends, consumer perceptions of food safety, weather, traffic patterns, the type, number and location of competing restaurants and the effects of war or terrorist activities and any governmental responses thereto. We are also affected by these factors, and the concentration of approximately 35% of our drive-ins in Texas and Oklahoma further subjects us to risk particularly if these factors impact those states. Factors such as interest rates, inflation, gasoline prices, energy costs, food and packaging costs, labor and benefit costs, legal claims and the availability of management and hourly employees also affect

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restaurant operations and administrative expenses for all drive-ins. Economic conditions, including disruptions in the financial markets, interest rates and other government policies impacting land and construction costs and the cost and availability of borrowed funds, affect our ability and our franchisees’ ability to finance new restaurant development, improvements and additions to existing restaurants, and the acquisition of restaurants from, and sale of restaurants to, franchisees. Inflation can cause increased food, labor and benefits costs and can increase our operating expenses. As operating expenses increase, we recover increased costs by increasing menu prices, to the extent permitted by competition and the consumer environment, or by implementing alternative products or processes, or by implementing other cost reduction procedures. We cannot ensure, however, that we will be able to recover increases in operating expenses in this manner.

Our financial results may fluctuate depending on various factors, many of which are beyond our control.

Our sales and operating results can vary from quarter to quarter and year to year depending on various factors, many of which are beyond our control. Certain events and factors may directly and immediately decrease demand for our products, and we cannot ensure that we will be able to respond to or address the events and factors sufficiently. If customer demand decreases rapidly, our results of operations, including store-level sales and profits, would also decline precipitously. These events and factors include:

• sales promotions and product offerings by Sonic and its competitors; • changes in average same-store sales and customer visits; • the inability to purchase sufficient levels of media; • variations in the price, availability and shipping costs of supplies such as food products; • seasonal effects on demand for Sonic’s products; • unexpected slowdowns in new drive-in development or franchise agreement renewals; • changes in competitive conditions; • changes in economic conditions generally, including consumer spending; • consumer sensitivity to price and value; • changes in consumer tastes and preferences; • changes in the cost of labor; and • weather and other acts of God.

Shortages or interruptions in the supply or delivery of perishable food products or rapid price increases could adversely affect our operating results.

We are dependent on frequent deliveries of perishable food products that meet certain specifications. Shortages or interruptions in the supply of perishable food products may be caused by unanticipated demand, problems in production or distribution, acts of terrorism, financial or other difficulties of suppliers, disease or food-borne illnesses, droughts, inclement weather or other conditions. We source large quantities of food and supplies, which can be subject to significant price fluctuations due to seasonal shifts, climate conditions, industry demand, energy costs, changes in international commodity markets and other factors. These shortages or rapid price increases could adversely affect the availability, quality and cost of ingredients, which would likely lower revenues and reduce our profitability.

Failure to successfully implement our growth strategy could reduce, or reduce the growth of, our revenue and net income.

We plan to continue to increase the number of Sonic Drive-Ins, but may not be able to achieve our growth objectives, and new drive-ins may not be profitable or provide a sufficient return on investment. The opening and success of drive-ins depends on various factors, including:

• competition from other restaurants in current and future markets; • the degree of saturation in existing markets; • consumer interest in and acceptance of the Sonic brand in existing and new markets; • the identification and availability of suitable and economically viable locations; • sales and profit levels at existing drive-ins; • the negotiation of acceptable lease or purchase terms for new locations; • permitting and regulatory requirements; • the cost and availability of construction resources and financing; • the ability to meet construction schedules; • the availability of qualified franchisees and their financial and other development capabilities, including their desire and ability to access and commit

capital;

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• the ability to hire and train qualified management personnel; • sufficient marketing efforts; • weather; and • general economic and business conditions.

If we are unable to open as many new drive-ins as planned, if the drive-ins are less profitable than anticipated or if we are otherwise unable to successfully implement our growth strategy, revenue and profitability may grow more slowly or even decrease.

Our outstanding and future leverage could have an effect on our operations.

The Company employs securitized financing in the form of fixed rate notes and variable rate notes. As of August 31, 2017 , we had two outstanding series of fixed rate notes: 1) $155.2 million in debt including accrued interest at an interest rate of 3.75% , with an anticipated repayment date of July 2020, and 2) $423.0 million in debt including accrued interest at an interest rate of 4.47% , with an anticipated repayment date of May 2023. In addition, as of August 31, 2017 , we had $60.1 million in debt including accrued interest under the variable rate notes. Interest on the variable notes is based on the one-month London Interbank Offered Rate or Commercial Paper, depending on the funding source, plus 2.0%, per annum. The variable rate notes have an anticipated repayment date of May 2021, with two one-year options available under certain conditions. We believe our current leverage ratio is moderate. We have historically generated net operating cash flows significantly in excess of our debt service requirements. In the event that we default on our debt obligations, the following consequences could apply:

• Our flexibility may be reduced in responding to changes in business, industry, regulatory or economic conditions. • Our ability to obtain additional financing in the future for acquisitions, working capital, capital expenditures and general corporate or other purposes could

be impaired or any such financing may not be available on terms favorable to us. • Any substantial decrease in net operating cash flows or any substantial increase in expenses could make it difficult for us to meet our debt service

requirements or force us to modify our operations or sell assets; as a result a substantial portion of our cash flows could be required for debt service and might not be available for our operations or other purposes.

• Unpaid amounts outstanding could become immediately due and payable.

Sonic Drive-Ins are subject to health, employment, environmental and other government regulations, and failure to comply with existing or future government regulations could expose us to litigation, damage to our reputation and lower profits.

Sonic and its franchisees are subject to various federal, state and local laws affecting their businesses. The successful development and operation of restaurants depends to a significant extent on the selection and acquisition of suitable sites, which are subject to zoning, land use (including the placement of drive- thru windows), environmental (including litter), traffic and other regulations. More stringent requirements of local and state governmental bodies with respect to zoning, land use and environmental factors could delay, prevent or make cost prohibitive the continuing operations of an existing restaurant or the development of new restaurants in particular locations. Restaurant operations are also subject to licensing and regulation by state and local departments relating to health, food preparation, sanitation and safety standards, federal and state labor and immigration laws (including applicable minimum wage requirements, overtime, working and safety conditions and work authorization requirements), federal and state laws prohibiting discrimination and other laws regulating the design and operation of facilities, such as the Americans with Disabilities Act. If we fail to comply with any of these laws, we may be subject to governmental action or litigation, and our reputation could be accordingly harmed. Injury to our reputation would, in turn, likely reduce revenues and profits.

In recent years, there has been an increased legislative, regulatory and consumer focus on nutrition and advertising practices in the food industry, particularly among restaurants. As a result, we have and will become subject to regulatory initiatives in the area of nutritional content, disclosure and advertising, such as requirements to provide information about the nutritional content of our food products, which could increase expenses. The operation of our franchise system is also subject to franchise laws and regulations enacted by a number of states and rules promulgated by the U.S. Federal Trade Commission. Any future legislation or legal changes regarding franchise relationships may negatively affect our operations, particularly our relationship with our franchisees and may increase our potential liability for franchisee practices and our costs. Failure to comply with new or existing franchise laws and regulations in any jurisdiction or to obtain required government approvals could result in a ban or temporary suspension on future franchise sales. Changes in applicable accounting rules imposed by governmental regulators or private governing bodies could also affect our reported results of operations.

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We are subject to the Fair Labor Standards Act, which governs such matters as minimum wage, overtime and other working conditions, along with the Americans with Disabilities Act, various family leave mandates and a variety of other laws enacted, or rules and regulations promulgated, by federal, state and local governmental authorities that govern these and other employment matters. We have experienced and expect further increases in payroll expenses as a result of government-mandated increases in the minimum wage and future increases may be material. Enactment and enforcement of various federal, state and local laws, rules and regulations on immigration and labor organizations may adversely impact the availability and costs of labor for our restaurants in a particular area or across the United States. In addition, our vendors may be affected by higher minimum wage standards or availability of labor, which may increase the price of goods and services they supply to us.

We have implemented various aspects of the Affordable Care Act in our business, and the law or other related requirements may change. There are no assurances that a combination of cost management and price increases can accommodate all of the costs associated with compliance.

Litigation from customers, franchisees, employees and others could harm our reputation and impact operating results.

Our legal and regulatory environment exposes us to complex compliance and litigation risk. Claims of illness or injury relating to food content, food quality or food handling are common in the QSR industry, as are intellectual property claims (including often aggressive or opportunistic attempts to enforce patents used in information technology systems). In addition, class action lawsuits have been filed, and may continue to be filed, against various QSRs alleging, among other things, that QSRs have failed to disclose the health risks associated with foods we serve and that QSR marketing practices have encouraged obesity and other health issues. There are also litigation and compliance risks and costs associated with privacy, consumer data protection and similar laws, particularly as they apply to children, as well as laws related to the collection and use of consumer, employee and franchisee data. We additionally may be subject to employee, franchisee and other claims in the future based on, among other things, discrimination, harassment, wrongful termination and wage, rest break and meal break issues, including those relating to overtime compensation. Litigation, as well as regulatory and legal changes, involving our relationship with our franchisees and the legal distinction between our franchisees and us for employment law purposes, if determined adversely, could increase costs, negatively impact the business prospects of our franchisees and subject us to incremental liability for their actions. In addition to decreasing our sales and profitability and diverting management resources, adverse publicity or a substantial judgment against us could negatively impact our reputation, hindering the ability to attract and retain qualified franchisees and grow the business.

We may not be able to adequately protect our intellectual property, which could decrease the value of our brand and products.

The success of our business depends on the continued ability to use existing trademarks, service marks and other components of our brand in order to increase brand awareness and further develop branded products. All of the steps we have taken to protect our intellectual property may not be adequate.

Our reputation and business could be materially harmed as a result of security breaches.

Security breaches involving our systems or those of our franchisees or third-party providers may occur, such as unauthorized access, denial of service, computer viruses and other disruptive problems caused by hackers and other bad actors. Our technology systems contain personal, financial and other information that is entrusted to us by our customers and employees as well as financial, proprietary and other confidential information related to our business. An actual or alleged security breach could result in system disruptions, shutdowns, theft or unauthorized disclosure of confidential information. The occurrence of any of these incidents, or the reporting of such incidents whether accurate or not, could result in adverse publicity, loss of consumer confidence, increased costs, reduced sales and profits and criminal penalties or civil liabilities.

As further described below, the Company is investigating a payment card breach experienced at some Sonic Drive-In locations. On October 4, 2017, we issued a public statement notifying guests that we had discovered that credit and debit card numbers may have been acquired without authorization as part of a malware attack experienced at certain Sonic Drive-In locations. Upon first becoming aware of the incident, we immediately contacted law enforcement and began working with them to investigate the matter. At the same time, we immediately launched our own investigation with the help of experienced third-party forensics firms. Our investigation is ongoing, and we continue to work closely with experienced forensics firms and law enforcement officials to further investigate the matter.

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We have incurred and in the future may incur costs resulting from breaches of security of confidential consumer information related to our electronic processing of credit and debit card transactions.

A significant portion of our restaurant sales are by credit or debit cards. On October 4, 2017, we issued a public statement notifying guests that we had discovered that credit and debit card numbers may have been acquired without authorization as part of a malware attack experienced at certain Sonic Drive-In locations. We may ultimately be subject to losses associated with claims and anticipated claims by payment card companies for non-ordinary course operating expenses, card issuer losses, and card replacement costs, as well as fines and penalties issued by payment card companies in connection with the payment card breach. In addition to claims by payment card companies with respect to the payment card breach, we are the defendant in purported class action lawsuits, alleging that we negligently failed to provide adequate security to protect the payment card information of the plaintiffs, causing those individuals to suffer financial losses (the “Litigation”). We may also be subject to fines and penalties imposed by state and/or federal regulators relating to or arising out of the payment card breach. It is possible that losses associated with the payment card breach, including losses associated with the Litigation, could have a material adverse effect on our results of operations in future periods.

We may in the future become subject to additional claims for purportedly fraudulent transactions arising out of the actual or alleged theft of credit or debit card information, and we may also be subject to further lawsuits or other proceedings relating to these types of incidents. Any such claim or proceeding arising from the payment card breach could cause us to incur significant unplanned expenses, which could have an adverse impact on our financial condition and results of operations. Further, adverse publicity resulting from these allegations may have a material adverse effect on us and our restaurants.

Unreliable or inefficient drive-in technology, lack of support for drive-in technology and failure to successfully implement technology initiatives could adversely impact operating results.

We rely on proprietary and commercially available technologies at our drive-ins, including point-of-sale, digital point-of-purchase and payment card systems. We rely on this technology not only to efficiently operate our drive-ins but also to drive sales growth and margin improvement. Our strategic technology initiatives may not be timely or effectively implemented or adequately resourced. Certain technology networks and systems may also be unreliable or inefficient, and our technology vendors may limit or terminate product support and maintenance or be unwilling or unable to provide products and services needed to execute our technology initiatives. Additionally, replacement parts and support and maintenance skills may become scarce, cost prohibitive or non-existent. Any such risks could disrupt drive-in operations, render us unable to achieve desired strategic results and impact sales and profitability.

Ownership and leasing of significant amounts of real estate exposes us to possible liabilities and losses.

We own or lease the land and building for all Company Drive-Ins. Accordingly, we are subject to all of the risks associated with owning and leasing real estate. In particular, the value of our assets could decrease and our costs could increase because of changes in the investment climate for real estate, demographic trends and supply or demand for the use of our drive-ins, which may result from competition from similar restaurants in the area, as well as liability for environmental conditions. We generally cannot cancel the leases, so if an existing or future Sonic Drive-In is not profitable, and we decide to close it, we may nonetheless be committed to perform our obligations under the applicable lease including, among other things, paying rent for the balance of the lease term. In addition, as each of the leases expires, we may fail to negotiate renewals, either on commercially acceptable terms or at all, which could cause us to close drive-ins in desirable locations.

Catastrophic events may disrupt our business.

Unforeseen events, or the prospect of such events, including war, terrorism and other domestic or international conflicts, public health issues, including health epidemics or pandemics, and natural disasters such as hurricanes, earthquakes or other adverse weather and climate conditions, whether occurring in the United States or abroad, could disrupt our operations, disrupt the operations of franchisees, suppliers or customers or result in political or economic instability. These events could reduce demand for our products or make it difficult or impossible to receive products from suppliers.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

Of the 228 Company Drive-Ins operating as of August 31, 2017 , we operated 98 of them on property leased from third parties and 130 of them on property we own. The leases expire on dates ranging from 2018 to 2037 , with the majority of the third-party leases providing for renewal options. All third-party leases provide for specified monthly rental payments and/or rentals based on sales volume. Most third-party leases require Sonic to maintain the property and pay the cost of insurance and taxes.

We also own and lease 135 properties and sublease 53 properties to franchisees and other parties. These leases with franchisees and other parties expire on

dates ranging from 2018 to 2032 , with the majority of the leases providing for renewal options. The majority of the leases and subleases for Franchise Drive-Ins provide for percentage rent based on sales volume, with a minimum base rent. These leases generally require the franchisee to maintain the property and pay the costs of insurance and taxes. Virtually all of our owned properties are pledged as collateral under the terms of our securitized financing facility, as described under “Liquidity and Sources of Capital” in Part II, Item 7.

Our corporate headquarters is located in Oklahoma City. We have an existing lease to occupy approximately 96,300 square feet. This lease expires in November 2023 and has two five-year renewal options. Sonic believes its properties are suitable for the purposes for which they are being used.

Item 3. Legal Proceedings

On October 4, 2017, the Company issued a public statement notifying guests that it had discovered that credit and debit card numbers may have been acquired without authorization as part of a malware attack experienced at certain Sonic Drive-In locations. The Company’s investigation is ongoing, and the Company continues to work closely with experienced third-party forensics firms and law enforcement officials to further investigate the matter. The Company was named as a defendant in three purported class action complaints in the United States District Court for the Western District of Oklahoma filed on September 27, 2017, September 29, 2017 and October 2, 2017, respectively, one purported class action complaint in the District of Oregon filed on September 27, 2017 and one purported class action complaint in the District of Nevada filed on September 28, 2017 (collectively, the “Litigation”), all of which assert various claims related to the Company’s alleged failure to safeguard customer credit card information. The plaintiffs in the Litigation seek monetary damages, injunctive and declaratory relief and attorneys’ fees and costs. The Company believes it has meritorious defenses to these actions and intends to vigorously oppose the claims asserted in the complaints. We cannot reasonably estimate the range of potential losses that may be associated with the Litigation because of the early stage of each lawsuit. We also cannot assure you that we will not become subject to other inquiries or claims relating to the payment card breach in the future. Although we maintain cyber liability insurance, we currently believe it is possible that the ultimate amount paid by us, if we are unsuccessful in defending all of the Litigation, will be in excess of our cyber liability insurance coverage applicable to claims of this nature. We are unable to estimate the amount of any such excess.

The Company is involved in various other legal proceedings and has certain unresolved claims pending. Based on the information currently available, management believes that all such other claims currently pending are either covered by insurance or would not have a material adverse effect on the Company’s business or financial condition.

Item 4. Mine Safety Disclosures

Not applicable.

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Item 4A. Executive Officers of the Company

Identification of Executive Officers

The following table identifies the executive officers of the Company:

Name Age Position Executive

Officer Since Clifford Hudson 62 Chairman of the Board of Directors and Chief Executive Officer 1985

Claudia S. San Pedro 48 Executive Vice President and Chief Financial Officer 2007

John H. Budd III 50 Executive Vice President and Chief Development and Strategy Officer 2013

Jose A. Dueñas 45 Executive Vice President and Chief Brand Officer 2017

Christina D. Vaughan 42 President of Sonic Restaurants, Inc. 2017

Paige S. Bass 48 Senior Vice President, General Counsel and Assistant Corporate Secretary 2007

E. Edward Saroch 60 Senior Vice President of Franchise Relations 2017

Lori Abou Habib 37 Vice President and Chief Marketing Officer 2017

Michelle E. Britten 50 Vice President and Chief Accounting Officer 2012

Carolyn C. Cummins 59 Vice President of Compliance and Corporate Secretary 2004

Corey R. Horsch 39 Vice President of Investor Relations and Treasurer 2015

Business Experience

The following sets forth the business experience of the executive officers of the Company for at least the past five years:

Clifford Hudson has served as the Company’s Chairman of the Board since January 2000 and Chief Executive Officer since April 1995 and as its President since March 2017. He also served as President from April 1995 to January 2000 and reassumed that position from November 2004 until May 2008 and again in April 2013 to January 2016. He has served in various other offices with the Company since 1984. Mr. Hudson has served as a Director of the Company since 1993. He has served on the Board of Trustees of the Ford Foundation since January 2006.

Claudia S. San Pedro has served as the Company’s Executive Vice President and Chief Financial Officer since August 2015. She served as Senior Vice President and Chief Financial Officer from April 2015 until August 2015. Ms. San Pedro served as Vice President of Investor Relations and Communications of the Company from January 2013 until April 2015 and was its Vice President of Investor Relations from July 2010 until January 2013. She served as Vice President of Investor Relations and Brand Strategies from October 2009 until July 2010. Ms. San Pedro has also served as Treasurer of the Company from January 2007 until October 2015. She served as the Director of the Oklahoma Office of State Finance from June 2005 through November 2006. From July 2003 to May 2005, Ms. San Pedro served as the Budget Division Director for the Oklahoma Office of State Finance.

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John H. Budd III has served as Executive Vice President and Chief Development and Strategy Officer from January 2016 to present. He served as Senior Vice President and Chief Development and Strategy Officer from August 2013 until January 2016. Mr. Budd served in several progressive positions for Boston Consulting Group from 1997 until joining Sonic in August 2013. His most recent position with Boston Consulting Group was Partner and Managing Director.

Jose A. Duen͂as has served as Executive Vice President and Chief Brand Officer since August 2017. Mr. Duen͂as served as Executive Vice President and Chief Marketing Officer for Olive Garden, Darden Restaurants, Inc., from November 2014 to August 2017, and was its Senior Vice President of Brand Marketing from June 2012 to October 2014. Mr. Duen͂as served in several progressive positions with Kellogg Company from September 1995 to May 2012, the most recent of which was Vice President and General Manager of the toaster pastries business.

Christina D. Vaughan has served as President of Sonic Restaurants, Inc. since January 2017. She served as Vice President of Market Strategies for the Company from November 2012 until July 2015, and Vice President of Franchise Operations for the Company from August 2015 to December 2016. Ms. Vaughan held various positions of increasing responsibility from the time she first joined the Company as a field marketing representative in September 2002 until November 2012.

Paige S. Bass has served as Senior Vice President and General Counsel of the Company since October 2014 and served as Vice President and General Counsel of the Company from January 2007 until October 2014. She has also served as Assistant Corporate Secretary since October 2008. Ms. Bass joined the Company as Associate General Counsel in 2004. Prior to joining the Company, Ms. Bass was employed as an associate with the law firm of Crowe & Dunlevy in Oklahoma City, Oklahoma.

E. Edward Saroch has served as Senior Vice President of Franchise Relations since January 2013 and was Senior Vice President of Field Services – West Region from November 2011 until January 2013. Mr. Saroch was the Senior Vice President of East Markets from September 2010 until November 2011. Mr. Saroch joined the Company in October 1995.

Lori I. Abou Habib has served as Vice President and Chief Marketing Officer since August 2017 and served as a Vice President in marketing roles for the Company from January 2016 until August 2017. She held various marketing roles of increasing responsibility from 2007 when she joined Sonic until she became Vice President of Local Relationship Marketing in January 2016.

Michelle E. Britten has served as Vice President and Chief Accounting Officer since January 2016 and as Vice President and Controller of the Company from November 2012 until January 2016. She served as Senior Director of Corporate Accounting from April 2009 until November 2012 and as Senior Director of SEC Reporting from January 2007 until April 2009. Ms. Britten joined the Company in 2005 as its Director of SEC Reporting.

Carolyn C. Cummins has served as the Company’s Corporate Secretary since January 2007 and as the Company’s Vice President of Compliance since April 2004. Ms. Cummins joined the Company as Assistant General Counsel in 1999.

Corey R. Horsch has served as Vice President of Investor Relations and Treasurer of the Company since October 2015. Mr. Horsch served as a Portfolio Manager with Surveyor Capital from May 2011 until September 2015. He served as a Senior Research Analyst with Luther King Capital Management from June 2006 until April 2011. Prior to June 2006, Mr. Horsch worked for almost six years with Credit Suisse in various positions of increasing responsibility, the most recent of which was Vice President, Senior U.S. Equity Research Analyst.

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PART II

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

Market Information and Dividends

The Company’s common stock trades on NASDAQ under the symbol “SONC.” In August 2014, the Company initiated a quarterly cash dividend program with respect to shares of our common stock. A quarterly cash dividend has been paid in each subsequent quarter. Subsequent to the end of fiscal year 2017, the Company declared a quarterly dividend of $0.16 per share of common stock to be paid to stockholders of record as of the close of business on November 8, 2017, with a payment date of November 17, 2017. The following table sets forth the high and low sales price for the Company’s common stock as reported on NASDAQ and the dividends declared and paid during the period indicated.

Sales Price Dividends Declared and Paid Fiscal year ended Fiscal year ended Fiscal year ended August 31, 2017 August 31, 2016 August 31, High Low High Low 2017 2016

First Quarter $ 28.87 $ 21.12 $ 29.99 $ 22.72 $ 0.14 $ 0.11 Second Quarter 28.60 24.57 33.18 24.91 0.14 0.11 Third Quarter 29.44 22.50 36.34 28.80 0.14 0.11 Fourth Quarter 30.05 22.66 30.91 26.17 0.14 0.11

The future declaration of quarterly dividends and the establishment of future record and payment dates are subject to the final determination of the Company’s

Board of Directors.

Stockholders

As of October 13, 2017 , the Company had 598 record holders of its common stock.

Issuer Purchases of Equity Securities

Shares repurchased during the fourth quarter of fiscal year 2017 are as follows (in thousands, except per share amounts):

Period

Total Number of

Shares Purchased

Average Price

Paid per Share

Total Number of Shares

Purchased as Part of Publicly

Announced Plans or

Programs

Maximum Dollar Value that May

Yet Be Purchased Under the Program (1)

June 1, 2017 through June 30, 2017 250 $ 28.42 250 $ 38,157 July 1, 2017 through July 31, 2017 695 25.36 695 20,523 August 1, 2017 through August 31, 2017 862 23.80 862 160,000

Total 1,807 1,807 _______________

(1) The Board of Directors extended the share repurchase program effective May 2016, authorizing the purchase of up to an additional $155 million of the Company’s outstanding shares of common stock through August 2017. In October 2016, the Board of Directors increased the authorization by $40 million. In August 2017, the Board of Directors further extended the share repurchase program, authorizing the purchase of up to an additional $160 million of the Company’s outstanding shares of common stock through August 2018. Share repurchases will be made from time to time in the open market or otherwise, including through an accelerated share repurchase program (“ASR”), under terms of a Rule 10b5-1 plan, in privately negotiated transactions or in round lot or block transactions. The share repurchase program may be extended, modified, suspended or discontinued at any time.

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Item 6. Selected Financial Data

The following table sets forth selected financial data regarding the Company’s financial condition and operating results. One should read the following information in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” below in Part II, Item 7, and the Company’s Consolidated Financial Statements included elsewhere in this report.

Selected Financial Data (In thousands, except per share data)

Fiscal year ended August 31, 2017 2016 2015 2014 2013

Income Statement Data: Company Drive-In sales $ 296,101 $ 425,795 $ 436,031 $ 405,363 $ 402,296

Franchise Drive-Ins: Franchise royalties and fees 170,527 170,319 161,342 138,416 130,737 Lease revenue 7,436 7,459 5,583 4,291 4,785

Other 3,203 2,747 3,133 4,279 4,767 Total revenues 477,267 606,320 606,089 552,349 542,585

Cost of Company Drive-In sales 249,911 356,820 363,938 342,109 343,209 Selling, general and administrative 78,687 82,089 79,336 69,415 66,022 Depreciation and amortization 39,248 44,418 45,892 42,210 40,387 Provision for impairment of long-lived assets 1,140 232 1,440 114 1,776 Other operating (income) expense, net (14,994) (4,691) (945) (176) 1,943

Total expenses 353,992 478,868 489,661 453,672 453,337 Income from operations 123,275 127,452 116,428 98,677 89,248 Interest expense, net (1) 27,808 34,948 24,706 24,913 32,949 Income before income taxes 95,467 92,504 91,722 73,764 56,299 Net income $ 63,663 $ 64,067 $ 64,485 $ 47,916 $ 36,701

Income per share:

Basic $ 1.47 $ 1.32 $ 1.23 $ 0.87 $ 0.65 Diluted $ 1.45 $ 1.29 $ 1.20 $ 0.85 $ 0.64

Weighted average shares used in calculation: Basic 43,306 48,703 52,572 55,164 56,384 Diluted 44,043 49,669 53,953 56,619 57,191

Cash dividends declared per common share (2) $ 0.56 $ 0.44 $ 0.27 $ 0.09 $ —

Balance Sheet Data:

Working capital $ 30,568 $ 62,994 $ (2,383) $ 16,201 $ 67,792 Property, equipment and capital leases, net 312,380 392,380 421,406 441,969 399,661 Total assets 561,744 648,661 620,024 650,972 660,794 Obligations under capital leases (including current portion) 19,631 21,064 24,440 26,743 26,864 Long-term debt (including current portion) 637,521 578,938 438,028 437,318 447,294 Stockholders’ equity (deficit) (201,758) (75,643) 17,433 62,675 77,464

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(1) Includes net loss from early extinguishment of debt of $8.8 million and $4.4 million for fiscal years 2016 and 2013, respectively. (2) The first quarter dividend for fiscal year 2015 was declared in the fourth quarter of fiscal year 2014.

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

Overview

Description of the Business . Sonic operates and franchises the largest chain of drive-in restaurants in the United States. As of August 31, 2017 , the Sonic system was comprised of 3,593 drive-ins, of which 6% were Company Drive-Ins and 94% were Franchise Drive-Ins. Sonic’s signature food items include specialty drinks (such as cherry limeades and slushes), ice cream desserts, made-to-order cheeseburgers, chicken entrees ranging from sandwiches to boneless wings, a variety of hot dogs including six-inch premium beef hot dogs and footlong quarter pound coneys, hand-made onion rings and tater tots. Sonic Drive-Ins also offer breakfast items that include a variety of breakfast burritos and serve the full menu all day. Our Company Drive-In revenues and cost of sales, as well as franchise royalties and fees, are directly affected by the number and sales volume of drive-ins and new drive-in openings.

Overview of Business Performance . System same-store sales decreased 3.3% during fiscal year 2017 as compared to an increase of 2.6% for fiscal year 2016 . Same-store sales at Company Drive-Ins decreased by 4.7% during fiscal year 2017 as compared to an increase of 1.7% for fiscal year 2016 . The same-store sales decreases reflect a decline in traffic, driven by sluggish consumer spending in the restaurant industry and aggressive competitive activity. We continue to execute on our long-term strategies, including new technology, people initiatives, product innovation, personalized service, targeted value promotions and our fully integrated media strategy. All of these initiatives fuel Sonic’s growth strategy, which incorporates same-store sales growth, new drive-in development and deployment of cash. Same-store sales growth is the most important layer and drives operating leverage and increased operating cash flows.

Revenues decreased to $477.3 million for fiscal year 2017 from $606.3 million for fiscal year 2016 , which was primarily due to a decrease in Company

Drive-In sales of $129.7 million. The decrease in Company Drive-In sales was primarily a result of refranchising 110 Company Drive-Ins. To a lesser extent, the decline in revenues is also attributed to decreased same-store sales. Restaurant margins at Company Drive-Ins were unfavorable by 60 basis points during fiscal year 2017 , reflecting the de-leveraging impact of declining same-store sales and rising labor costs, partially offset by moderate commodity cost improvement and the impact of refranchising underperforming drive-ins.

Net income and diluted earnings per share for fiscal year 2017 were $63.7 million and $1.45 , respectively, as compared to net income of $64.1 million or $1.29 per diluted share for fiscal year 2016 .

In June 2016, the Company announced plans to refranchise Company Drive-Ins as part of a refranchising initiative to move toward an approximately 95% – franchised system. During fiscal year 2016, the Company refranchised the operations of 38 Company Drive-Ins. Of the Company Drive-Ins refranchised in fiscal year 2016, 29 were completed as part of the refranchising initiative announced in June 2016. The Company retained a non-controlling minority investment in the franchise operations of 25 of these refranchised drive-ins.

During fiscal year 2017, the Company completed transactions to refranchise the operations of 110 Company Drive-Ins and retained a non-controlling minority investment in 106 of these refranchised drive-ins. The Company completed the refranchising initiative in the second quarter of fiscal year 2017. All subsequent sales of Company Drive-Ins are considered normal course of business.

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Income from minority investments is included in other revenue on the consolidated statements of income. The gains and losses below associated with refranchised drive-ins are recorded in other operating income, net, on the consolidated statement of income. The following is a summary of the pretax activity recorded as a result of the refranchising initiative (in thousands, except number of refranchised Company Drive-Ins):

Fiscal year ended August 31, 2017 2016 Number of refranchised Company Drive-Ins 110 29

Proceeds from sales of Company Drive-Ins $ 20,036 $ 3,568 Proceeds from sale of real estate (1) 11,726 —

Real estate assets sold (1) (12,095) (2,402) Assets sold, net of retained minority investment (2) (7,891) — Initial and subsequent lease payments for real estate option (1) (3,178) — Goodwill related to sales of Company Drive-Ins (966) (194) Deferred gain for real estate option (3) (809) — Loss on assets held for sale (65) —

Refranchising initiative gains, net $ 6,758 $ 972 _______________

(1) During the first quarter of fiscal year 2017, as part of a 53 drive-in refranchising transaction, the Company entered into a direct financing lease which included an option for the franchisee to purchase the real estate within the next 24 months. In accordance with lease accounting requirements, because the exercise of this option could occur at any time within 24 months, the portion of the proceeds from the refranchising attributable to the fair value of the option was applied as the initial minimum lease payment for the real estate. The franchisee exercised the option in the last six months of the fiscal year. Until the option was fully exercised, the franchisee made monthly lease payments which are included in other operating income, net of sub- lease expense.

(2) Net assets sold consisted primarily of equipment. (3) The deferred gain of $0.8 million is recorded in other non-current liabilities as a result of a real estate purchase option extended to the franchisee in the second quarter of fiscal year 2017. The

deferred gain will continue to be amortized into income through January 2020 when the option becomes exercisable.

The following table provides information regarding the number of Company Drive-Ins and Franchise Drive-Ins operating as of the end of the years indicated as well as the system change in sales and average unit volume. System information includes both Company Drive-In and Franchise Drive-In information, which we believe is useful in analyzing the growth of the brand as well as the Company’s revenues, since franchisees pay royalties based on a percentage of sales.

System Performance ($ in thousands)

Fiscal year ended August 31, 2017 2016 2015

Increase (decrease) in total sales (2.4)% 3.5% 8.3%

System drive-ins in operation (1) :

Total at beginning of year 3,557 3,526 3,518 Opened 66 53 41 Closed (net of re-openings) (30) (22) (33)

Total at end of year 3,593 3,557 3,526

Average sales per drive-in $ 1,250 $ 1,284 $ 1,244

Change in same-store sales (2) (3.3)% 2.6% 7.3%

_______________

(1) Drive-ins that are temporarily closed for various reasons (repairs, remodeling, relocations, etc.) are not considered closed unless the Company determines that they are unlikely to reopen within a reasonable time.

(2) Represents percentage change for drive-ins open for a minimum of 15 months.

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Results of Operations

Revenues . The following table sets forth the components of revenue for the reported periods and the relative change between the comparable periods.

Revenues ($ in thousands)

Fiscal year ended

August 31, Increase (Decrease)

Percent Increase

(Decrease) 2017 2016 Company Drive-In sales $ 296,101 $ 425,795 $ (129,694) (30.5)%

Franchise Drive-Ins: Franchise royalties 169,344 168,691 653 0.4 % Franchise fees 1,183 1,628 (445) (27.3)% Lease revenue 7,436 7,459 (23) (0.3)%

Other 3,203 2,747 456 16.6 %

Total revenues $ 477,267 $ 606,320 $ (129,053) (21.3)%

Fiscal year ended

August 31, Increase (Decrease)

Percent Increase

(Decrease) 2016 2015 Company Drive-In sales $ 425,795 $ 436,031 $ (10,236) (2.3)% Franchise Drive-Ins:

Franchise royalties 168,691 158,813 9,878 6.2 % Franchise fees 1,628 2,529 (901) (35.6)% Lease revenue 7,459 5,583 1,876 33.6 %

Other 2,747 3,133 (386) (12.3)% Total revenues $ 606,320 $ 606,089 $ 231 0.0 %

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The following table reflects the changes in sales and same-store sales at Company Drive-Ins. It also presents information about average unit volumes and the number of Company Drive-Ins, which is useful in analyzing the growth of Company Drive-In sales.

Company Drive-In Sales ($ in thousands)

Fiscal year ended August 31, 2017 2016 2015

Company Drive-In sales $ 296,101 $ 425,795 $ 436,031 Percentage increase (decrease) (30.5)% (2.3)% 7.6%

Company Drive-Ins in operation (1) :

Total at beginning of year 345 387 391 Opened 3 1 3 Sold to franchisees (117) (38) (6) Closed (net of re-openings) (3) (5) (1)

Total at end of year 228 345 387

Average sales per Company Drive-In $ 1,134 $ 1,142 $ 1,116

Change in same-store sales (2) (4.7)% 1.7 % 6.9%

_______________

(2) Represents percentage change for drive-ins open for a minimum of 15 months.

Same-store sales for Company Drive-Ins decreased 4.7% for fiscal year 2017 and increased 1.7% for fiscal year 2016 . The decrease in fiscal year 2017 reflects a decrease in traffic due to sluggish consumer spending in the restaurant industry and aggressive competitive activity. Company Drive-In sales decreased $129.7 million , or 30.5% , during fiscal year 2017 compared to fiscal year 2016 . The change was driven by a $113.8 million decrease related to drive-ins that were refranchised during the fiscal year and a decrease of $14.3 million in same-store sales.

For fiscal year 2016 , Company Drive-In sales decreased $10.2 million , or 2.3% , as compared to 2015 . The change was driven by a $17.3 million decrease related to drive-ins that were refranchised during the fiscal year, partially offset by an increase of $7.3 million in same-store sales.

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The following table reflects the change in franchise sales, the number of Franchise Drive-Ins, average unit volumes and franchising revenues. While we do not record Franchise Drive-In sales as revenues, we believe this information is important in understanding our financial performance since these sales are the basis on which we calculate and record franchise royalties. This information is also indicative of the financial health of our franchisees.

Franchise Information ($ in thousands)

Fiscal year ended August 31, 2017 2016 2015

Franchise Drive-In sales $ 4,112,062 $ 4,092,303 $ 3,931,365 Percentage increase 0.5 % 4.1% 8.4%

Franchise Drive-Ins in operation (1) :

Total at beginning of year 3,212 3,139 3,127 Opened 63 52 38 Acquired from the Company 117 38 6 Closed (net of re-openings) (27) (17) (32)

Total at end of year 3,365 3,212 3,139

Average sales per Franchise Drive-In $ 1,260 $ 1,301 $ 1,261

Change in same-store sales (2) (3.2)% 2.7% 7.3%

Franchising revenues (3) $ 177,963 $ 177,778 $ 166,925 Percentage increase decrease 0.1 % 6.5% 17.0%

Effective royalty rate (4) 4.12 % 4.12% 4.04%

_______________

(2) Represents percentage change for drive-ins open for a minimum of 15 months. (3) Consists of revenues derived from franchising activities, including royalties, franchise fees and lease revenues. See Revenue Recognition in the Critical Accounting Policies and Estimates

section of Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in this Form 10-K. (4) Represents franchise royalties as a percentage of Franchise Drive-In sales.

Same-store sales for Franchise Drive-Ins decreased 3.2% for fiscal year 2017 and increased 2.7% for fiscal year 2016 . The current fiscal year reflects a decrease in traffic due to sluggish consumer spending in the restaurant industry and aggressive competitive activity. Franchising revenues increased $0.2 million , or 0.1% , for fiscal year 2017 compared to fiscal year 2016 , reflecting an increase in royalties related to franchisee acquisitions of Company Drive-Ins, as well as net new unit growth, offset by the decline in royalties related to same-store sales. These factors also impacted the effective royalty rate compared to fiscal year 2016 . Lease revenues were flat compared to the prior year.

Franchising revenues increased $10.9 million , or 6.5% , for fiscal year 2016 compared to fiscal year 2015 , reflecting an increase in royalties related to positive same-store sales at Franchise Drive-Ins as well as net new unit growth and franchisee acquisitions of Company Drive-Ins. These factors also impacted the increase in the effective royalty rate compared to fiscal year 2015. Lease revenues increased compared to the prior year due to an increase in same-store sales and the addition of new leases.

Other revenues increased $0.5 million to $3.2 million in fiscal year 2017 and decreased $0.4 million to $2.7 million in fiscal year 2016 as compared to the prior year. The increase in fiscal year 2017 was primarily due to increased minority income, driven by new investments in franchise operations related to refranchised Company Drive-Ins, partially offset by the sale of certain minority investments that occurred in the first quarter of fiscal year 2017. The decrease in 2016 was primarily due to a decrease in minority income from investments in franchise operations.

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Operating Expenses . The following table presents the overall costs of drive-in operations as a percentage of Company Drive-In sales. Other operating expenses include direct operating costs such as marketing, telephone and utilities, repair and maintenance, rent, property tax and other controllable expenses.

໿

Company Drive-In Margins

Fiscal year ended August 31, Percentage Points

Increase (Decrease) 2017 2016

Costs and expenses: Company Drive-Ins:

Food and packaging 27.3% 27.7% (0.4)% Payroll and other employee benefits 36.3% 35.3% 1.0% Other operating expenses 20.8% 20.8% 0.0%

Cost of Company Drive-In sales 84.4% 83.8% 0.6%

Fiscal year ended August 31, Percentage Points

Increase (Decrease) 2016 2015

Costs and expenses: Company Drive-Ins:

Food and packaging 27.7% 27.9% (0.2)% Payroll and other employee benefits 35.3% 34.8% 0.5% Other operating expenses 20.8% 20.8% 0.0%

Cost of Company Drive-In sales 83.8% 83.5% 0.3%

Drive-in level margins were unfavorable by 60 basis points during fiscal year 2017 . Food and packaging costs were favorable by 40 basis points, which reflected a favorable commodity cost environment. Payroll and other employee benefits were unfavorable by 100 basis points reflecting the de-leveraging impact of same-store sales and rising labor costs, partially offset by lower variable compensation. Other operating expenses were flat as a result of the de-leveraging impact of same-store sales, offset by the benefit of refranchising lower-margin Company Drive-Ins.

Drive-in level margins were unfavorable by 30 basis points during fiscal year 2016 . Food and packaging costs were favorable by 20 basis points, which reflected favorable commodity costs offset by the impact of vendor contributions that were previously credited against food and paper costs for Company Drive- Ins but that are now being remitted to the Brand Technology Fund (“BTF”), which was established in the third quarter of fiscal year 2016 and administers cybersecurity and other technology programs for the Sonic system. Payroll and other employee benefits were unfavorable by 50 basis points reflecting investments in improved employee compensation and benefits to attract and retain employees at the drive-in level. Other operating expenses were flat as a result of leverage from sales growth offset by the impact of the fees paid to the new BTF.

Selling, General and Administrative (“SG&A”) . SG&A expenses decreased 4.1% to $78.7 million for fiscal year 2017 as compared to fiscal year 2016 , and increased 3.5% to $82.1 million during fiscal year 2016 as compared to fiscal year 2015 . The decrease for fiscal year 2017 is primarily related to lower variable compensation related to operating performance. The increase in SG&A expense for fiscal year 2016 was primarily related to the costs of additional headcount in support of the Company’s technology and marketing initiatives.

Depreciation and Amortization . Depreciation and amortization expense decreased 11.6% to $39.2 million in fiscal year 2017 and 3.2% to $44.4 million in fiscal year 2016 . The decreases during fiscal years 2017 and 2016 were primarily attributable to assets that fully depreciated in the prior fiscal year and a decrease in Company assets related to the refranchising of 110 Company Drive-Ins.

Provision for Impairment of Long-Lived Assets . Provision for impairment of long-lived assets increased $0.9 million to $1.1 million in fiscal year 2017 compared to $0.2 million for fiscal year 2016 and $1.4 million for 2015 . The increases in fiscal year 2017 and in fiscal year 2015 were primarily the result of impairment charges for the write-off of assets associated with some lower performing drive-ins.

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Other Operating Income and Expense, Net . Fiscal year 2017 reflected $15.0 million in other operating income compared to $4.7 million for fiscal year 2016 and $0.9 million for fiscal year 2015 . The $10.3 million change for fiscal year 2017 was primarily the result of the net refranchising gains of $6.8 million, a gain on sale of real estate of $4.7 million and a gain on the sale of minority investments in franchise operations of $3.8 million, partially offset by $1.8 million in severance costs related to the elimination of certain corporate positions. The gain in fiscal year 2016 was primarily the result of a $1.8 million gain related to the refranchising of Company Drive-Ins during the fiscal year as well as a gain of $1.9 million related to the sale of real estate.

Net Interest Expense . Net interest expense decreased $7.1 million in fiscal year 2017 compared to an increase of $10.2 million in fiscal year 2016 and a decrease of $0.2 million in fiscal year 2015 . The decrease in fiscal year 2017 is driven by the $8.8 million loss from the early extinguishment of debt related to our debt transaction completed in the third quarter of fiscal year 2016 and the related increase in our long-term debt balance. See “Liquidity and Sources of Capital” and “Item 7A. Quantitative and Qualitative Disclosures About Market Risk” below for additional information on factors that could impact interest expense.

Income Taxes . The provision for income taxes reflects an effective tax rate of 33.3% for fiscal year 2017 compared with 30.7% for fiscal year 2016 and 29.7% for fiscal year 2015. The effective income tax rate for fiscal year 2017 was favorably impacted by the recognition of excess tax benefits related to stock option exercises due to the early adoption of Accounting Standards Update (“ASU”) No. 2016-09 in the first quarter of 2017. Please refer to the “New Accounting Pronouncements” section of note 1 – Summary of Significant Accounting Policies, included in Part II, Item 8, “Financial Statements and Supplementary Data” in this Annual Report on Form 10-K for details regarding the adoption of ASU No. 2016-09. The lower effective income tax rate for fiscal year 2016 was primarily attributable to the recognition of tax benefits related to a change in uncertain tax positions from prior years and legislation that reinstated and extended the Work Opportunity Tax Credit (“WOTC”). The lower effective income tax rate for fiscal year 2015 was primarily attributable to the recognition of prior years’ federal tax deductions, a decrease in the valuation allowance for the deferred tax asset related to state net operating losses and legislation that reinstated and extended the WOTC. Excluding the nonrecurring tax benefits in fiscal years 2016 and 2015, the effective tax rates would have been 34.7% and 35.1% for fiscal years 2016 and 2015, respectively. Our tax rate may continue to vary significantly from quarter to quarter depending on the timing of stock option exercises and dispositions by option holders and as circumstances on other tax matters change.

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Non-GAAP Adjustments. Excluding the non‑GAAP adjustments further described below, net income per diluted share was $1.25 for fiscal year 2017 , compared to $1.29 per diluted share in fiscal year 2016 .

The following analysis of non-GAAP adjustments is intended to supplement the presentation of the Company’s financial results in accordance with GAAP. We believe the exclusion of these items in evaluating the change in net income and diluted earnings per share for the periods below provides useful information to investors and management regarding the underlying business trends and the performance of our ongoing operations and is helpful for period-to-period and company-to-company comparisons, which management believes will assist investors in analyzing the financial results for the Company and predicting future performance. Numbers below are stated in thousands, except per share amounts.

Fiscal year ended August 31, 2017

Fiscal year ended August 31, 2016

Net

Income Diluted

EPS Net

Income Diluted

EPS Reported – GAAP $ 63,663 $ 1.45 $ 64,067 $ 1.29

Net gain on refranchising transactions (1) (6,758) (0.15) (972) (0.02) Tax impact on refranchising transactions (2) 2,542 0.06 317 0.00 Gain on sale of investment in refranchised drive-in operations (3) (3,795) (0.09) — — Tax impact on sale of investment in refranchised drive-in operations (4) 1,350 0.03 — — Restructuring charges (5) 1,819 0.04 — — Tax impact of restructuring charges (6) (672) (0.02) — — Gain on sale of real estate (4,702) (0.11) (1,875) (0.04) Tax impact on real estate sale (7) 1,738 0.04 664 0.01 FIN 48 release of income tax credits and deductions — — (3,038) (0.06) Loss from early extinguishment of debt — — 8,750 0.18 Tax impact on debt extinguishment (8) — — (3,027) (0.06) Retroactive benefit of Work Opportunity Tax Credit and resolution of tax matters — — (585) (0.01)

Adjusted – Non-GAAP $ 55,185 $ 1.25 $ 64,301 $ 1.29 _______________

(1) During the first quarter of fiscal year 2017, we completed two transactions to refranchise the operations of 56 Company Drive-Ins. Of the proceeds, $3.8 million was applied as the initial lease payment for an option to purchase the real estate within 24 months. The franchisee exercised the option in the last six months of the fiscal year. Until the option was fully exercised, the franchisee made monthly lease payments which totaled $0.8 million for the fiscal year-to-date, net of sub-lease expense. During the second quarter of fiscal year 2017, we completed transactions to refranchise the operations of 54 Company Drive-Ins, one of which resulted in a gain of $7.8 million and another in a loss of $1.4 million. The loss transaction reflects a deferred gain of $0.8 million as a result of a real estate purchase option extended to the franchisee. The deferred gain is being amortized into income through January 2020 when the option becomes exercisable.

(2) Combined tax impact at an effective tax rate of 35.6% during the first quarter of fiscal year 2017 and at adjusted effective tax rates of 36.0%, 48.7% and 37.0% during the second, third and fourth quarters of fiscal year 2017, respectively; tax impact during fiscal year 2016 at an adjusted effective tax rate of 32.6%.

(3) Gain on sale of investment in refranchised drive-in operations is related to minority investments in franchise operations retained as part of a refranchising transaction that occurred in fiscal year 2009. Income from minority investments is included in other revenue on the consolidated statements of income.

(4) Tax impact during the period at an effective tax rate of 35.6%. (5) During the fourth quarter of fiscal year 2017, the Company incurred severance costs related to the elimination of certain corporate positions. (6) Tax impact during the period at an adjusted effective tax rate of 37.0%. (7) Tax impact during fiscal year 2017 at an adjusted effective tax rate of 37.0%; tax impact during fiscal year 2016 at an adjusted effective tax rate of 35.4%. (8) Tax impact during the period at an effective tax rate of 34.6%.

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Fiscal year ended August 31, 2016

Fiscal year ended August 31, 2015

Net

Income Diluted

EPS Net

Income Diluted

EPS Reported – GAAP $ 64,067 $ 1.29 $ 64,485 $ 1.20

Net gain on refranchising transactions (972) (0.02) — — Tax impact on refranchising transactions (1) 317 0.00 — — FIN 48 release of income tax credits and deductions (3,038) (0.06) — — Loss from early extinguishment of debt 8,750 0.18 — — Tax impact on debt extinguishment (2) (3,027) (0.06) — — Gain on sale of real estate (1,875) (0.04) — — Tax impact on real estate sale (3) 664 0.01 — — Retroactive benefit of Work Opportunity Tax Credit and resolution of tax matters (585) (0.01) (666) (0.01) Federal tax benefit of prior-year statutory tax deduction — — (3,199) (0.06) Change in deferred tax valuation allowance — — (1,701) (0.04) Retroactive effect of federal tax law change — — 612 0.01

Adjusted – Non-GAAP $ 64,301 $ 1.29 $ 59,531 $ 1.10 _______________

(1) Tax impact during the period at an adjusted effective tax rate of 32.6%. (2) Tax impact during the period at an effective tax rate of 34.6%. (3) Tax impact during the period at an adjusted effective tax rate of 35.4%.

Financial Position

Total assets decreased $86.9 million , or 13.4% , to $561.7 million during fiscal year 2017 from $648.7 million at the end of fiscal year 2016 . The decrease during the year was driven by a decrease in net property, equipment and capital leases of $80.0 million, primarily related to refranchising transactions and the related depreciation, as well as real estate sold during the fiscal year. These were partially offset by purchases of property, equipment and technology.

Total liabilities increased $39.2 million , or 5.4% , to $763.5 million during fiscal year 2017 from $724.3 million at the end of fiscal year 2016 . The increase was primarily attributable to the $60.0 million balance from borrowing on the Company’s Series 2016-1 Senior Secured Variable Funding Notes, Class A-1 (the “2016 Variable Funding Notes”). This was partially offset by a decrease of $7.1 million in accrued liabilities, which is mainly related to payment of wages and incentive compensation and other tax liabilities that were accrued as of August 31, 2016, as well as lower incentive compensation accruals at August 31, 2017 related to operating performance. Additionally, there was a decrease of $5.2 million in accounts payable, primarily related to the timing of payments and drive-ins that were under construction as of August 31, 2016.

Total stockholders’ deficit increased $126.1 million , or 166.7% , to a deficit of $201.8 million during fiscal year 2017 from $75.6 million at the end of fiscal year 2016 . This increase was primarily attributable to $172.9 million in purchases of common stock under our stock repurchase program and the payment of $24.1 million in dividends, partially offset by current-year earnings of $63.6 million.

Liquidity and Sources of Capital

Operating Cash Fl ows. Net cash provided by operating activities decreased $41.3 million to $74.9 million for fiscal year 2017 as compared to $116.2 million in fiscal year 2016 . The change was driven by a decrease of $19.5 million in net income excluding the non-cash items for gain on disposition of assets and loss from early extinguishment of debt. Operating cash flow was also impacted by the timing of payments for operational, payroll and tax transactions, as well as higher incentive compensation paid in fiscal year 2017 compared to the prior year.

Investing Cash Flows. Cash provided by investing activities was $60.5 million for fiscal year 2017 compared to cash used in investing activities of $34.1 million for fiscal year 2016 . The increase in cash provided by investing activities was driven by an increase of $75.5 million in proceeds from the sale of assets. We received $41.3 million in proceeds from the sale of real estate related to previous refranchising transactions and $31.8 million in proceeds for store operations and real estate sold to franchisees as part of the current refranchising initiative. Additionally, we received $8.4 million in proceeds from the

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sale of a minority investment related to previous refranchising transactions. The increase in other cash flows from investing reflects $4.9 million from franchisees on short-term financing notes and $2.5 million in repayment of notes extended in fiscal year 2016 related to the establishment of the Brand Technology Fund. Investments in property and equipment compared to the same period last year saw an increase in additions to rebuilds, relocations and remodels of existing drive-ins and newly constructed drive-ins, offset by a decline in cash used for the purchase and replacement of equipment and technology.

Brand technology investments $ 16.9 Rebuilds, relocations and remodels of existing drive-ins 15.3 Newly constructed drive-ins leased or sold to franchisees 5.9 Purchase and replacement of equipment and technology 4.8 Newly constructed Company Drive-Ins 3.6

Total investments in property and equipment $ 46.5

Financing Cash Flows. Net cash used in financing activities increased $147.9 million to $185.1 million for fiscal year 2017 as compared to $37.2 million in fiscal year 2016 . The prior-year period included net borrowings of $140.9 million, offset by debt extinguishment costs of $18.4 million related to the debt financing transaction that occurred in the third quarter of fiscal year 2016, compared to net borrowings of $58.6 million on the 2016 Variable Funding Notes in the current-year period. Additionally, purchases of treasury stock increased by $21.1 million and restricted cash for securitization obligations increased $53.3 million. The increase in restricted cash includes $47.0 million of proceeds from the sale of securitized assets which are subject to restrictions described below. For additional information on long-term debt, see our Annual Report on Form 10-K for the year ended August 31, 2017.

During fiscal year 2013, in a private transaction, various subsidiaries of ours (the “Co-Issuers”) refinanced and paid $155.0 million of the Series 2011 Senior Secured Fixed Rate Notes, Class A-2 (the “2011 Fixed Rate Notes”) with the issuance of $155.0 million of Series 2013-1 Senior Secured Fixed Rate Notes, Class A- 2 (the “2013 Fixed Rate Notes”), which bear interest at 3.75% per annum. The 2013 Fixed Rate Notes have an expected life of seven years, interest payable monthly, no scheduled principal amortization and an anticipated repayment date in July 2020.

On May 17, 2016, in a private transaction, the Co-Issuers issued $425.0 million of Series 2016-1 Senior Secured Fixed Rate Notes, Class A-2 (the “2016 Fixed Rate Notes”), which bear interest at 4.47% per annum. The 2016 Fixed Rate Notes have an expected life of seven years with an anticipated repayment date in May 2023.

The Co-Issuers also entered into a securitized financing facility of 2016 Variable Funding Notes (together with the 2016 Fixed Rate Notes, the “2016 Notes”) to replace the Series 2011-1 Senior Secured Variable Funding Notes, Class A-1 (the “2011 Variable Funding Notes”). The 2016 revolving credit facility provides access to a maximum of $150.0 million of 2016 Variable Funding Notes and certain other credit instruments, including letters of credit. Interest on the 2016 Variable Funding Notes is based on the one-month London Interbank Offered Rate or Commercial Paper, depending on the funding source, plus 2.0%, per annum. An annual commitment fee of 0.5% is payable monthly on the unused portion of the 2016 Variable Funding Notes facility. The 2016 Variable Funding Notes have an expected life of five years with an anticipated repayment date in May 2021 with two one-year extension options available upon certain conditions including meeting a minimum debt service coverage ratio threshold.

We used a portion of the net proceeds from the issuance of the 2016 Fixed Rate Notes to repay our existing 2011 Fixed Rate Notes and 2011 Variable Funding Notes in full and to pay the costs associated with the securitized financing transaction, including prepayment premiums.

At August 31, 2017 , the balance outstanding under the 2013 Fixed Rate Notes and the 2016 Fixed Rate Notes, including accrued interest, was $155.2 million and $423.0 million , respectively. At August 31, 2017 , the balance outstanding under the 2016 Variable Funding Notes, including accrued interest, was $60.1 million . The weighted-average interest cost of the 2013 Fixed Rate Notes and 2016 Fixed Rate Notes was 4.1% and 4.8% , respectively. The weighted-average interest cost of the 2016 Variable Funding Notes was 3.2% . The weighted-average interest cost includes the effect of the loan origination costs.

In connection with the 2016 transaction described above, we recognized an $8.8 million loss from the early extinguishment of debt during the third quarter of fiscal year 2016, which primarily consisted of a $5.9 million prepayment premium and the $2.9 million write-off of unamortized deferred loan fees remaining from the refinanced debt. This is reflected in “loss from early extinguishment of debt” on the Consolidated Statements of Income. Loan origination costs associated with the 2016 transaction totaled $12.5 million and were allocated among the 2016 Notes. Loan costs are being amortized over each note’s expected life, and the unamortized balance related to the 2016 Variable Funding Notes and the 2016 Fixed Rate Notes is

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included in other current assets and long-term debt, net, respectively, on the consolidated balance sheets. For additional information on our 2013 Fixed Rate Notes and 2016 Notes, see note 10 – Debt, included in Part II, Item 8, “Financial Statements and Supplementary Data” in this Annual Report on Form 10-K.

In August 2014, our Board of Directors extended our share repurchase program, authorizing us to purchase up to $105.0 million of our outstanding shares of common stock during fiscal year 2015. In October 2014, the Company entered into an accelerated share repurchase (“ASR”) agreement with a financial institution to purchase $15.0 million of the Company’s common stock. In exchange for a $15.0 million up-front payment, the financial institution delivered approximately 0.6 million shares. During January 2015, the ASR purchase period concluded. The Company paid an additional $0.1 million with no additional shares delivered, resulting in an average price per share of $26.32. In February 2015, the Company entered into additional ASR agreements with a financial institution to purchase $75.0 million of the Company’s common stock. In exchange for a $75.0 million up-front payment, the financial institution delivered approximately 2.1 million shares. The ASR transactions completed in July 2015 with 0.3 million additional shares delivered, resulting in an average price per share of $31.38. The Company reflected the ASR transactions as a repurchase of common stock for purposes of calculating earnings per share and as a forward contract indexed to its own common stock. The forward contract met all of the applicable criteria for equity classification.

In August 2015, our Board of Directors extended our share repurchase program, authorizing us to purchase up to $145.0 million of our outstanding shares of common stock through August 31, 2016. Our Board of Directors further extended the share repurchase program effective May 2016, authorizing the purchase of up to an additional $155.0 million of our outstanding shares of common stock through August 31, 2017. During fiscal year 2016 , approximately 5.2 million shares were repurchased for a total cost of $148.3 million, resulting in an average price per share of $28.48.

In October 2016, our Board of Directors increased the authorization under the share repurchase program by $40.0 million. During fiscal year 2017, approximately 6.7 million shares were repurchased for a total cost of $172.9 million , resulting in an average price per share of $25.71 . In August 2017, the Board of Directors approved an incremental $160.0 million share repurchase authorization of our outstanding shares of common stock through August 31, 2018. The total remaining amount authorized under the share repurchase program, as of August 31, 2017 , was $160.0 million .

Share repurchases will be made from time to time in the open market or otherwise, including through an ASR program, under the terms of a Rule 10b5-1 plan, in privately negotiated transactions or in round lot or block transactions. The share repurchase program may be extended, modified, suspended or discontinued at any time.

As of August 31, 2017 , our total cash balance of $84.2 million ( $22.3 million of unrestricted and $61.9 million of restricted cash balances) reflected the impact of the cash generated from operating activities, refranchising proceeds, 2016 Variable Funding Notes borrowing proceeds, cash used for share repurchases, dividends, debt payments and capital expenditures mentioned above. The restricted cash balance includes $47.0 million in proceeds from the sale of real estate. Under the securitized finance structure the Company has 12 months to reinvest these proceeds in eligible capital expenses. If the proceeds are not reinvested within a year all amounts above $5 million must be used to pay down the fixed-rate debt and may require a make-whole premium. The Company may also pay down debt prior to that 12-month time period which could require a make-whole premium. The make-whole premium calculation is, in general, based on the discounted present value of the amount of interest that would otherwise have been paid had the prepayment not been made. We believe that existing cash, funds generated from operations and the amount available under our 2016 Variable Funding Notes will meet our needs for the foreseeable future.

In August 2014, the Company initiated a quarterly cash dividend program and paid a quarterly dividend of $0.09 per share of common stock, totaling $18.8 million, for fiscal year 2015 and a quarterly dividend of $0.11 per share of common stock, totaling $21.3 million, for fiscal year 2016. The Company paid a quarterly dividend of $0.14 per share of common stock, totaling $24.1 million , for fiscal year 2017. Subsequent to the end of fiscal year 2017, the Company declared a quarterly dividend of $0.16 per share of common stock to be paid to stockholders of record as of the close of business on November 8, 2017, with a payment date of November 17, 2017. The future declaration of quarterly dividends and the establishment of future record and payment dates are subject to the final determination of the Company’s Board of Directors.

Off-Balance Sheet Arrangements

The Company has obligations for guarantees on certain franchisee loans, which in the aggregate are immaterial, and obligations for guarantees on certain franchisee lease agreements. Other than such guarantees and various operating leases and purchase obligations, which are disclosed below in “Contractual Obligations and Commitments” and in note 7 – Leases and

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note 15 – Commitments and Contingencies, included in Part II, Item 8, “Financial Statements and Supplementary Data” in this Annual Report on Form 10-K, the Company has no other material off-balance sheet arrangements.

Contractual Obligations and Commitments

In the normal course of business, Sonic enters into purchase contracts, lease agreements and borrowing arrangements. The following table presents our commitments and obligations as of August 31, 2017 (in thousands):

Payments Due by Fiscal Year

Total

Less than 1 Year (2018)

1 – 3 Years

(2019-2020)

3 – 5 Years

(2021-2022)

More than 5 Years

(2023 and thereafter)

Long-term debt (1) $ 771,970 $ 27,280 $ 208,914 $ 99,609 $ 436,167 Capital leases 24,608 4,706 6,966 5,864 7,072 Operating leases 93,344 8,785 17,403 15,300 51,856 Purchase obligations (2) 151,848 19,185 29,209 31,439 72,015 Other (3) 20,435 — — — —

Total $ 1,062,205 $ 59,956 $ 262,492 $ 152,212 $ 567,110 _______________

(1) Includes scheduled principal and interest payments on our 2016 Notes and 2013 Fixed Rate Notes and assumes these notes will be outstanding for the expected seven-year life with anticipated repayment dates in July 2020 and May 2023, respectively.

(2) Purchase obligations primarily relate to the Company’s estimated share of system commitments to purchase food products. We have excluded agreements that are cancelable without penalty. These amounts require estimates and could vary due to the timing of volumes and changes in market pricing.

(3) Includes $0.6 million of unrecognized tax benefits related to uncertain tax positions and $19.8 million related to guarantees of franchisee leases and loan agreements. As we are not able to reasonably estimate the timing or amount of these payments, if any, the related balances have not been reflected in the “Payments Due by Fiscal Year” section of the table.

Impact of Inflation

We are impacted by inflation which has caused increases in our food, labor and benefits costs and has increased our operating expenses. To the extent permitted by competition and the consumer environment, increased costs are recovered through a combination of menu price increases and alternative products, efficiencies or processes, or by implementing other cost reduction procedures.

Critical Accounting Policies and Estimates

The Consolidated Financial Statements and Notes to Consolidated Financial Statements included in this document contain information that is pertinent to management’s discussion and analysis. The preparation of financial statements in conformity with generally accepted accounting principles requires management to use its judgment to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities. These assumptions and estimates could have a material effect on our financial statements. We evaluate our assumptions and estimates on an ongoing basis using historical experience and various other factors that are believed to be relevant under the circumstances. Actual results may differ from these estimates under different assumptions or conditions.

We perform a periodic review of our financial reporting and disclosure practices and accounting policies to ensure that our financial reporting and disclosures provide accurate and transparent information relative to the current economic and business environment. We believe the following significant accounting policies and estimates involve a high degree of risk, judgment and/or complexity.

Accounting for Long-Lived Assets . Company Drive-Ins are analyzed quarterly for impairments in accordance with Accounting Standards Codification (“ASC”) No. 360-10. We compare anticipated undiscounted cash flows from the related long-lived assets of each drive-in with their respective carrying values to determine if the long-lived assets are recoverable. If the sum of the anticipated undiscounted cash flows is less than the carrying value, an impairment loss is recognized. The impairment loss is measured by comparing the fair value of the asset to its carrying value. Fair value is typically determined to be the value of the land since drive-in buildings and improvements are single-purpose assets and have little value to market participants. The equipment associated with a drive-in can typically be relocated to another drive-in and therefore is not adjusted. The basis for our estimates of future cash flow include certain assumptions about expected future operating performance, such as revenue growth rates, operating margins and other relevant facts and circumstances. Our estimates of

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cash flow may differ from actual cash flow due to, among other things, economic conditions, changes to our business model or changes in operating performance. Our estimates of cash flow represent the best estimates we have at this time, and we believe the underlying assumptions are reasonable; however, it is possible that our estimates of future cash flows could change resulting in the need to impair certain Company Drive-In assets.

Revenue Recognition. For a description of our revenue recognition policies, see the “Revenue Recognition, Franchise Fees and Royalties” section of note 1 – Summary of Significant Accounting Policies, included in Part II, Item 8, “Financial Statements and Supplementary Data” in this Annual Report on Form 10-K.

Income Taxes . We estimate certain components of our provision for income taxes. These estimates include, among other items, depreciation and amortization expense allowable for tax purposes, allowable tax credits for items such as wages paid to certain employees, effective rates for state and local income taxes and the tax deductibility of certain other items.

Although we believe we have adequately accounted for our uncertain tax positions, from time to time, audits result in proposed assessments where the ultimate resolution may give rise to us owing additional taxes. We adjust our uncertain tax positions until they are resolved in light of changing facts and circumstances, such as the completion of a tax audit, expiration of a statute of limitations, the refinement of an estimate and penalty and interest accruals associated with uncertain tax positions. We believe that our tax positions comply with applicable tax law and that we have adequately provided for these matters. However, to the extent that the final tax outcome of these matters is different from the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made.

Our estimates are based on the best available information at the time that we prepare the provision, including legislative and judicial developments. We generally file our annual income tax returns several months after our fiscal year end. Income tax returns are subject to audit by federal, state and local governments, typically several years after the returns are filed. These returns could be subject to material adjustments or differing interpretations of the tax laws. Adjustments to these estimates or returns can result in significant variability in the tax rate from period to period.

New Accounting Pronouncements

For a description of new accounting pronouncements, see the “New Accounting Pronouncements” section of note 1 – Summary of Significant Accounting Policies, included in Part II, Item 8, “Financial Statements and Supplementary Data” in this Annual Report on Form 10-K.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Sonic’s use of debt directly exposes the Company to interest rate risk. Fixed rate debt, where the interest rate is fixed over the life of the instrument, exposes the Company to changes in market interest rates reflected in the fair value of the debt and to the risk that the Company may need to refinance maturing debt with new debt at a higher rate. Sonic is also exposed to market risk from changes in commodity prices. The Company does not utilize financial instruments for trading purposes. Sonic manages its debt portfolio to achieve an overall desired position of fixed and floating rates.

Interest Rate Risk . Our exposure to interest rate risk at August 31, 2017 , was primarily based on the 2013 Fixed Rate Notes and 2016 Fixed Rate Notes with an effective rate of 3.75% and 4.47%, respectively, before amortization of debt-related costs. Additionally, we have interest rate risk exposure on the 2016 Variable Funding Notes, with interest based on the one-month London Interbank Offered Rate or Commercial Paper, depending on the funding source, plus 2.0%, per annum. At August 31, 2017 , the fair value of the 2013 Fixed Rate Notes and 2016 Fixed Rate Notes approximated their carrying value of $578.2 million , including accrued interest. At August 31, 2017 , the fair value of the 2016 Fixed Variable Funding Notes approximated their carrying value of $60.1 million . To derive the fair value, management used market information available for public debt transactions for companies with ratings that are similar to our ratings and information gathered from brokers who trade in our notes. Management believes this fair value is a reasonable estimate. Should interest rates and/or credit spreads increase or decrease by one percentage point, the estimated fair value of the 2013 Fixed Rate Notes, 2016 Fixed Rate Notes and 2016 Variable Funding Notes would decrease or increase by approximately $29.1 million, respectively. The fair value estimate required significant assumptions by management.

Commodity Price Risk . The Company and its franchisees purchase certain commodities such as beef, potatoes, chicken and dairy products. These commodities are generally purchased based upon market prices established with vendors. These purchase arrangements may contain contractual features that limit the price paid by establishing price floors or caps; however, we generally do not make any long-term commitments to purchase any minimum quantities under these arrangements other

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than as disclosed above in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under “Contractual Obligations and Commitments.” We also do not use financial instruments to hedge commodity prices because these purchase arrangements help control the ultimate cost.

This market risk discussion contains forward-looking statements. Actual results may differ materially from this discussion based upon general market conditions and changes in financial markets.

Item 8. Financial Statements and Supplementary Data

The Company has included the financial statements and supplementary financial information required by this item immediately following Part IV of this report and hereby incorporates by reference the relevant portions of those statements and information into this Item 8.

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

None.

Item 9A. Controls and Procedures

As of the end of the period covered by this report, the Company carried out an evaluation, under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13a-14 under the Securities Exchange Act of 1934). Our disclosure controls and procedures are designed to provide reasonable assurance of achieving their objectives. Based upon that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective at the reasonable assurance level.

There were no significant changes in the Company’s internal controls over financial reporting during the quarter ended August 31, 2017 that have materially affected or are reasonably likely to materially affect the Company’s internal controls over financial reporting.

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Management’s Report on Internal Control over Financial Reporting

The management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting. The Company’s internal control system was designed to provide reasonable assurance to the Company’s management and Board of Directors regarding the preparation and fair presentation of published financial statements. All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.

The Company’s management assessed the effectiveness of the Company’s internal control over financial reporting as of August 31, 2017 . In making this assessment, it used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control – Integrated Framework – 2013 . Based on our assessment, we believe that, as of August 31, 2017 , the Company’s internal control over financial reporting is effective based on those criteria.

The Company’s independent registered public accounting firm that audited the 2017 financial statements included in this annual report has issued an attestation report on the Company’s internal control over financial reporting. The report appears on the following page.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders Sonic Corp.:

We have audited Sonic Corp.’s internal control over financial reporting as of August 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Sonic Corp.’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on Sonic Corp.’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Sonic Corp. maintained, in all material respects, effective internal control over financial reporting as of August 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Sonic Corp. and subsidiaries as of August 31, 2017 and 2016 and the related consolidated statements of income, stockholders’ equity (deficit), and cash flows for each of the years in the three-year period ended August 31, 2017, and our report dated October 27, 2017 expressed an unqualified opinion on those consolidated financial statements.

(signed) KPMG LLP

Oklahoma City, OK October 27, 2017

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Item 9B. Other Information

None. PART III

Item 10. Directors, Executive Officers and Corporate Governance

Sonic has adopted a Code of Ethics for Financial Officers and a Code of Business Conduct and Ethics that applies to all directors, officers and employees. Sonic has posted copies of these codes on the investor section of its website, www.sonicdrivein.com .

Information regarding Sonic’s executive officers is set forth under Item 4A of Part I of this report. The other information required by this item is incorporated by reference from the definitive proxy statement which Sonic will file with the Securities and Exchange Commission no later than 120 days after August 31, 2017 (the “Proxy Statement”), under the captions “Election of Directors” and “Section 16(a) Beneficial Ownership Reporting Compliance.”

Item 11. Executive Compensation

The information required by this item is incorporated by reference from the Proxy Statement under the caption “Executive Compensation – Compensation Discussion and Analysis.”

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

The information required by this item is incorporated by reference from the Proxy Statement under the captions “Security Ownership of Certain Beneficial Owners and Management” and “Equity Compensation Plan Information.”

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

The information required by this item is incorporated by reference from the Proxy Statement under the captions “Certain Relationships and Related Transactions,” “Director Independence,” “Committees of the Board of Directors” and “Compensation Committee Interlocks and Insider Participation.”

Item 14. Principal Accounting Fees and Services

The information required by this item is incorporated by reference from the Proxy Statement under the caption “Independent Registered Public Accounting Firm.”

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PART IV

Item 15. Exhibits and Financial Statement Schedules

Financial Statements

The following consolidated financial statements of the Company appear immediately following this Item 15:

Page Report of Independent Registered Public Accounting Firm F-1 Consolidated Balance Sheets at August 31, 2017 and 2016 F-2 Consolidated Statements of Income for each of the three years in the period ended August 31, 2017 F-3 Consolidated Statements of Stockholders’ Equity (Deficit) for each of the three years in the period ended August 31, 2017 F-4 Consolidated Statements of Cash Flows for each of the three years in the period ended August 31, 2017 F-5 Notes to Consolidated Financial Statements F-6

Financial Statement Schedule

The Company has included the following schedule immediately following this Item 15:

Page Schedule II – Valuation and Qualifying Accounts F-27

The Company has omitted all other schedules because the conditions requiring their filing do not exist or because the required information appears in Sonic’s Consolidated Financial Statements, including the notes to those statements.

Exhibits

The Company has filed the exhibits listed below with this report. The Company has marked all management contracts and compensatory plans or arrangements with an asterisk (*).

3.01.

Certificate of Incorporation of the Company, which the Company incorporates by reference from Exhibit 3.1 to the Company’s Form S-1 Registration Statement No. 33-37158 filed on October 3, 1990.

3.02.

Certificate of Amendment of Certificate of Incorporation of the Company, March 4, 1996, which the Company incorporates by reference from Exhibit 3.05 to the Company’s Form 10-K for the fiscal year ended August 31, 2000.

3.03.

Certificate of Amendment of Certificate of Incorporation of the Company, January 22, 2002, which the Company incorporates by reference from Exhibit 3.06 to the Company’s Form 10-K for the fiscal year ended August 31, 2002.

3.04.

Certificate of Amendment of Certificate of Incorporation of the Company, January 31, 2006, which the Company incorporates by reference from Exhibit 3.04 to the Company’s Form 10-K for the fiscal year ended August 31, 2006.

4.01.

Bylaws of the Company, as amended and restated January 27, 2016, which the Company incorporates by reference from Exhibit 3.1 to the Company’s Form 8-K filed on February 1, 2016.

4.02.

Certificate of Designations of Series A Junior Preferred Stock, which the Company incorporates by reference from Exhibit 99.1 to the Company’s Form 8-K filed on June 17, 1997.

4.03.

Specimen Certificate for Common Stock, which the Company incorporates by reference from Exhibit 4.01 to the Company’s Form 10-K for the fiscal year ended August 31, 1999.

10.01.

Form of Sonic License Agreement, which the Company incorporates by reference from Exhibit No. 10.01 to the Company’s Form 10-K for the fiscal year ended August 31, 2016.

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10.02.

Form of Sonic Development Agreement, which the Company incorporates by reference from Exhibit No. 10.13 to the Company’s Form 10-K for the fiscal year ended August 31, 2007.

10.03.

Sonic Corp. Stock Purchase Plan, as amended and restated effective April 20, 2011, which the Company incorporates by reference from Exhibit 10.07 to the Company’s Form 10-K for the fiscal year ended August 31, 2012.*

10.04.

Sonic Corp. Savings and Profit-Sharing Plan, as amended and restated effective January 1, 2013, which the Company incorporates by reference from Exhibit 10.1 to the Company’s Form 10-Q filed on July 3, 2013.*

10.05.

Sonic Corp. Nonqualified Deferred Compensation Plan as amended and restated April 10, 2013, which the Company incorporates by reference from Exhibit 10.06 to the Company’s Form 10-K for the fiscal year ended August 31, 2013.*

10.06.

Form of Indemnification Agreement for Directors, which the Company incorporates by reference from Exhibit 10.7 to the Company’s Form S-1 Registration Statement No. 33-37158 filed on October 3, 1990.*

10.07.

Form of Indemnification Agreement for Officers, which the Company incorporates by reference from Exhibit 10.14 to the Company’s Form 10-K for the fiscal year ended August 31, 1995.*

10.08.

Form of Chief Executive Officer Amended and Restated Employment Agreement dated January 1, 2017, which the Company incorporates by reference from Exhibit 10.01 to the Company’s Form 10-Q filed January 6, 2017.*

10.09.

Form of Executive Officer Amended and Restated Employment Agreement dated January 1, 2017, which the Company incorporates by reference from Exhibit 10.02 to the Company’s Form 10-Q filed January 6, 2017.*

10.10.

Amended and Restated Sonic Corp. Executive Severance Plan dated January 1, 2017, which the Company incorporates by reference from Exhibit 10.03 to the Company’s Form 10-Q filed January 6, 2017.*

10.11.

Sonic Corp. 2006 Long-Term Incentive Plan, as amended and restated effective January 16, 2014, which the Company incorporates by reference from Exhibit 4.1 to the Company’s Form S-8 filed on April 4, 2014.*

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