Medical Plan Highlights

; Updated: 12/31/2016 General Information Eligibility Enrollment Coverage Effective Date Administration Network Providers Associate: Regular Full-Time Hourly, Commissioned, and Salaried Associates are eligible for coverage beginning on the first of the month following 1 calendar month of service. If you are hired as a Part-Time or Temporary Associate and your status changes to fulltime, you are eligible for coverage beginning on the first day of the month following your Change in Status or the first day of the month following one full month of service whichever happens later. Dependents: Regular Full-Time Associates may cover eligible dependents, which include a Spouse/Domestic Partner and children under age 26. Please refer to the Summary Plan Description for more eligibility information. New Hire: Enroll online at mykmxhr.com by (a) the first of the month following 1 calendar month of service, or (b) 30 days from your hire date, whichever is later. Status Change: If your status changes to Regular Full-Time, you must enroll either 30 days from the date of your status change or by the first day of the following month whichever happens later. Note: If you don t enroll when first eligible, you will only be allowed to enroll if you experience a Qualified Change in Status Event (marriage, new baby, etc.) or during the next Open Enrollment. Please refer to the Summary Plan Description for more information on Qualified Change in Status Events. For eligibility and enrollment questions, call the MYKMXHR Service Center at (888) 695-6947. New Hire - Your coverage will be effective on the first of the month following 1 calendar month of service provided you enroll in coverage by that date. Status Change - Your coverage will be effective the first of the month after your election. You will receive your ID cards approximately three weeks after your effective date of coverage. Aetna administers the CarMax Medical Plan. If you have any questions about the Medical Plan or need to find a doctor, call (866) 498-5004 or visit aetna.com. If you are a Medical Plan member, you are also enrolled in the Prescription Drug Program. The Prescription Drug Program is administered by CVS/caremark. For questions about the Prescription Drug Program, call (855) 361-8564 or visit caremark.com. Our Know Your Numbers events and Commitment to Health Program are administered by Preventure. If you have questions about your Commitment to Health status or the status of your Medical Plan Credit, please contact Preventure Member Services at (888) 321-4326 or log into your account at carmaxwellness.com. Choosing in-network providers gives you the most value from your Medical Plan benefits. All three Medical Plan options utilize the same network of physicians, hospitals and pharmacies. Aetna Choice POS II (Open Access) network. For help finding a provider in your area, visit aetna.com, click Find a Doctor and select Choice POS II (Open Access). Or call (866) 498-5004. The CVS/caremark network includes most national pharmacy chains. Local pharmacies may also be included. Visit caremark.com or call (855) 361-8564 to find an in-network pharmacy near you. Using an out-of-network provider will increase your out-of-pocket costs through Deductibles and coinsurance amounts, and have a higher Out-of-Pocket Maximum. Updated: 12/31/2016 Online in CarMax World or at benefits.carmax.com Page 1 of 8

2017 Medical Plan Options Overview The chart below provides an overview of the key features of each of the Medical Plan Options effective March 1, 2017. Aetna Medical Plan Options Deductible Core 60 Select 70 Premium 80 In Network Only In Network Only In Network Only Individual $2,000 Individual $1,700 Individual $600 Two Individuals $4,000 Two Individuals $3,400 Two Individuals $1,200 Family $6,000 Family $5,100 Family $1,800 Health Savings Account Health Reimbursement Account CarMax's Contribution to Your Account Individual $200 Individual $200 n/a Two Individuals $400 Two Individuals $400 Family $600 Family $600 Out-of-Pocket Maximum Individual $6,550 Individual $6,550 Individual $6,550 Family $13,100 Family $13,100 Family $13,100 YOU PAY YOU PAY YOU PAY Preventive Care Services $0 $0 $0 Lav & X-rays (Basic Imaging) $0 after deductible $0 $0 Teladoc Virtual Visit $40 $15 copay $10 copay Retail Walk-in Clinics (e.g., CVS Minute Clinic) 40% after deductible $30 copay $20 copay Primary Care Physician Office Visit 40% after deductible $30 copay $20 copay Urgent Care Center Visit 40% after deductible $60 copay $40 copay Specialist Office Visit 40% after deductible 30% after deductible $50 copay Emergency Room Visit 40% after deductible $250 copay + 30% after deductible $150 copay + 20% after deductible Other Covered Services 40% after deductible 30% after deductible 20% after deductible CVS/caremark TM Prescription Coverage Generic Prescriptions Retail (30-day supply) $25 copay after deductible $15 copay $10 copay Maintenance (90-day supply) $50 copay after deductible $30 copay $20 copay Brand Prescriptions ** Preferred Brand - Retail (30-day supply) Preferred Brand - Maintenance (90-day supply) Non-Preferred Brand - Retail (30-day supply) Non-Preferred Brand - Maintenance (90-day supply) 40% after deductible Minimum $50; Maximum $125 40% after deductible Minimum $100; Maximum $250 40% after deductible Minimum $70; Maximum $175 40% after deductible Minimum $140; Maximum $350 30% Minimum $40; Maximum $100 30% Minimum $80; Maximum $200 30% Minimum $60; Maximum $150 30% Minimum $120; Maximum $300 $35 copay $70 copay $55 copay $110 copay ** Subject to the Generics First Program * Prescriptions on the Preventive Drug List are not subject to the deductible Plan Coverage Enhancements effective March 1, 2017 Teladoc copay has been reduced by 50% in both Select 70 and Premium 80. o o Select 70 - $30 copay to $15 copay Premium 80 - $20 copay to $10 copay Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 2 of 8

2017 Medical Plan Rates Associate Cost BI-WEEKLY Associate Cost ANNUALLY Core 60 Before Incentive Medical Plan Credit* After Incentive After Incentive Associate $44.28 ($23.08) $21.20 $551.20 Associate plus child $118.68 ($23.08) $95.60 $2,485.60 Associate plus children $159.64 ($23.08) $136.56 $3,550.56 Associate plus Spouse / Domestic Partner $167.55 ($46.16) $121.39 $3,156.14 Family $237.90 ($46.16) $191.74 $4,985.24 Associate Cost BI-WEEKLY Associate Cost ANNUALLY Select 70 Before Incentive Medical Plan Credit* After Incentive After Incentive Associate $89.02 ($23.08) $65.94 $1,714.44 Associate plus child $138.47 ($23.08) $115.39 $3,000.14 Associate plus children $187.93 ($23.08) $164.85 $4,286.10 Associate plus Spouse / Domestic Partner $193.86 ($46.16) $147.70 $3,840.20 Family $279.58 ($46.16) $233.42 $6,068.92 Associate Cost BI-WEEKLY Associate Cost ANNUALLY Premium 80 Before Incentive Medical Plan Credit* After Incentive After Incentive Associate $112.33 ($23.08) $89.25 $2,320.50 Associate plus child $188.21 ($23.08) $165.13 $4,293.38 Associate plus children $264.08 ($23.08) $241.00 $6,266.00 Associate plus Spouse / Domestic Partner $245.20 ($46.16) $199.04 $5,175.04 Family $347.39 ($46.16) $301.23 $7,831.98 * Medical Plan Credit applies to those Associates/Spouses/Domestic Partners who have completed the Commitment to Health program Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 3 of 8

Premium Credits and Plan Incentives Your Commitment to Health and the Medical Plan Credit All Associates who enroll in the Medical Plan are asked to participate in our voluntary Commitment to Health program. This program asks you and your covered Spouse or Domestic Partner to take the steps outlined in the Commitment to Health Policy to continue to receive a Medical Plan Credit (MPC) of $23.08 per paycheck (up to $600 each for the full Plan Year). The Commitment to Health program includes: Step 1 Step 2 Biometric Screening, which measures the risk factors associated with Metabolic Syndrome: blood pressure, HDL cholesterol, glucose, triglycerides, and waist circumference. and Health Assessment, an online questionnaire about your health history and personal habits (diet, exercise, etc.) to create a snapshot of your current health risks. The Aetna Healthy Lifestyle Coaching program, which provides one-on-one, over the phone consultations with your personal health coach. or Aetna s Simple Steps to a Healthier Life, an online, self-paced health coaching program Your health plan is committed to helping you achieve your best health. If your Biometric Screening results show that you are at risk for Metabolic Syndrome, or if you are a tobacco user, you can still earn the same Medical Plan Credit by participating in Aetna s Healthy Lifestyle Coaching or Simple Steps to a Healthier Life program. Furthermore, if applicable, we will accommodate the written recommendations of your doctor. Contact our wellness program administrator, Preventure, at (888) 321-4326, with any questions regarding your Commitment to Health status or Aetna at (866) 498-5004 with any questions regarding the Healthy Lifestyle Coaching or Simple Steps to a Healthier Life program. This also applies to your covered Spouse/Domestic Partner. See the Commitment to Health Policy for more information, including program deadlines. Beginning Right Maternity Incentive Program You or your Spouse/Domestic Partner are eligible to participate in Aetna s Beginning Right Maternity Program and receive a Wellness Bonus of up to $150. This program is free and provides a great resource for health information and assistance during pregnancy. Additional information about this program is available on the CarMax Benefits website. Simply call (866) 498-5004 to enroll. Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 4 of 8

Key Plan Provisions Plan Year: March 1 through February 28/29 Plan Year Deductible Out-of-Pocket Maximums Managing Your Medical Care 1 Precertification Penalty 1 The Plan Year Deductible is the amount of covered expenses you must pay out-of-pocket each Plan Year before the Plan begins to pay benefits. Covered expenses are subject to separate Deductibles for in-network and out-of-network services. Both Medical and Prescription out-of-pocket expenses will apply toward the Deductible. Special Provisions for the Premium 80 and Select 70 Plan Deductible: An Individual Deductible applies separately to each participant, each Plan Year, unless the Family Plan Year Deductible is satisfied. All services covered at a percentage of the cost (coinsurance) are subject to the applicable Deductible before the Plan pays benefits, except that services covered at 100% are not subject to the Deductible. Special Provisions for the Core 60 Plan Deductible: The full Plan Deductible must be satisfied before the Plan begins to pay benefits. The full Plan Deductible is based on the coverage level you elect (e.g., Associate Only, Associate plus Child, Family), as there is no Individual Deductible on the Core 60 Plan option when you enroll in a coverage level that includes dependents. IMPORTANT NOTES: (1) Basic Labs and Imaging services are only subject to coinsurance after you reach your full Deductible. You will pay 100% of the cost of these services prior to reaching your full Deductible. (2) Preventive Care services, as defined by the Affordable Care Act, will be covered at 100% and you are not required to meet your Deductible for these services. The Out-of-Pocket Maximum is the maximum amount you may be required to pay each Plan Year for covered services. Covered expenses incurred after you have reached your Out-of-Pocket Maximum will be covered at 100%. The Out-of-Pocket Maximums related to Medical services will include out-of-pocket expenses for both medical services and prescriptions. The Out-of-Pocket Maximum includes your Deductible, copayments, and coinsurance. Out-of-Pocket expenses are subject to separate Out-of-Pocket Maximums for in-network and out-of-network services. SPECIAL NOTE: An Individual Out-of-Pocket Maximum applies separately to each participant, each Plan Year, unless the Family Plan Year Out-of-Pocket Maximum is satisfied. Pre-treatment Estimates For questions about coverage, costs or recommended pre-treatment estimates, call (866) 498-5004 and choose the prompts for Medical Health Concierge for information about your treatment options, coverage, and the cost for those options. Pre-certification Requirements: Authorization is required for any inpatient or residential admission for medical, mental health, substance abuse treatment, home health care, hospice, or complex radiology procedures. (Emergency admissions should be reported no later than 48 hours after the admission.) If you don t get the required authorization for an admission, you will be subject to the Precertification Penalty (see below). In-network providers are responsible for requesting precertification on your behalf. To be sure precertification is completed for these types of services, call (866) 498-5004 and choose the Medical - Health Concierge prompts. A $500 Precertification Penalty applies to the allowed costs for each admission and surgery that required an authorization but did not have one prior to the service. This penalty does not apply toward the annual Out-of-Pocket Maximum or Plan Deductibles. 1 Refer to the Medical Management section of the Summary Plan Description for authorization provisions, penalties, and restrictions. Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 5 of 8

Health Spending Accounts Health Spending Accounts can help you save money on health expenses! CarMax offers you accounts to help you save on the cost of health care services. The Medical Plan you choose determines the accounts(s) you are eligible to participate in. The information below provides you with an overview of the accounts and the CarMax Medical Plan options to which they apply. Additional information about these accounts is available on the CarMax Benefits website. Health Care Flexible Spending Account (HCFSA) The Health Care Flexible Spending Account (HCFSA) Plan is available to eligible full-time Associates. Please note, if you participate in a Health Savings Account, IRS regulations restrict you from participating in a general purpose Health Care Flexible Spending Account such as this one. You may pledge to contribute up to $2,600 a year for eligible health expenses that are not paid through your medical, dental, or vision programs. The Plan Year is from March 1 through February 28/29. Money you contribute to your HCFSA is withheld from your paycheck on a pre-tax basis. The HCFSA allows you to rollover up to $500 in unused contributions each Plan Year. Any unused contributions in excess of $500 are forfeited after the Plan s Run-out Period. Health Reimbursement Account (HRA) A Benefit of the Select 70 option Select 70 Medical Plan members can use the HRA to cover out-of-pocket expenses for health care services, including the Deductible. CarMax will automatically fund your HRA when you elect the Select 70 Medical Plan option. No claim forms are needed for visits to doctors in the Plan s Aetna Choice POS II Network. The HRA fund automatically pays eligible health care expenses when claims are processed. The HRA funds don t count as taxable income; that means some of members health care costs are covered with tax-free dollars. Please note: HRA funds may only be used toward your or your Legal Tax Dependent s health expenses. Funds are flexible. If you don t use all the funds in your HRA, the balance rolls over to the next Plan Year provided you remain enrolled in the Select 70 Medical Plan option. This can help you save for anticipated medical needs down the road. If you re a Select 70 Medical Plan member, you can log in at aetna.com to check your HRA account balance and manage your HRA funds. Health Savings Account (HSA) A Benefit of the Core 60 option Core 60 Medical Plan members have the option to enroll in a Health Savings Account (HSA). If you do enroll in the HSA, CarMax will automatically deposit funds into your account. You may also elect to contribute to your HSA on a pre-tax basis. You can use your HSA to cover out-of-pocket expenses for health care services, including your Medical Plan Deductible, when they are incurred, or, you can pay the expenses out of pocket and save your HSA monies for future use. You can also use your HSA to pay for dental and vision expenses. There s no use it or lose it requirement with an HSA the money in your account is yours to keep, even after you leave CarMax! For more information about the Health Savings Account, please go to the CarMax Benefits website and review the Health Savings Account FAQs. Limited Purpose Flexible Spending Account (LPFSA) Intended for HSA Participants Associates who enroll in the Core 60 Medical Plan option and elect to participate in the Health Savings Account may not enroll in the Health Care Flexible Spending Account. However, for those who wish to contribute to both HSA and FSA accounts, the Company has established a Limited Purpose Flexible Spending Account (LPFSA). The LPFSA can be used for your dental and vision expenses. You may also use this account for medical expenses incurred after you have met the applicable Medical Plan Deductible. For more information about the Limited Purpose Flexible Spending Account, please go to the CarMax Benefits website. Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 6 of 8

Choosing the Right Provider In-Network Providers (Finding a Doctor) 24-Hour Nurseline Retail Walk In Clinic Teladoc Service Primary Care Office Visit Specialist Office Visit Urgent Care Clinic Emergency Room In-network providers for all three Medical Plan options include those physicians and hospitals that participate in Aetna s Choice POS II (Open Access) network. Choosing in-network providers gives you the most value from your Medical Plan benefits. For help finding a provider in your area, visit aetna.com, click Find a Doctor and select Choice POS II (Open Access). Or call (866) 498-5004. Using an out-of-network provider will increase your out-of-pocket costs through Deductibles and coinsurance amounts, and have a higher Out-of-Pocket Maximum. Aetna offers Plan Members a free 24-Hour Nurseline to help you anytime day or night. To reach a nurse, call 1-800-556-1555 and select the option to speak to a nurse. The nurses can help you: Learn about medical procedures and treatment options Prepare for a conversation with your doctor Determine if you need immediate care (e.g., the Emergency Room) or if you can wait to see your doctor during normal business hours. Retail Walk In Clinics are typically found in retail businesses such as CVS Pharmacies, Target stores, or Walgreens Pharmacies. These clinics are run by either RNs, Nurse Practitioners, or Physician Assistants. You should consider a Retail Walk In Clinic when you have the need for immediate care that is not urgent examples include the treatment of cold/flu symptoms, rashes, or basic infections. You can also get many wellness exams and routine physicals. CVS, Target and Walgreens clinics are all in the Aetna network! Aetna members have access to the Teladoc program which provides you with 24/7/365 access to doctors by phone or online video. Teladoc is a convenient and affordable option that allows you to talk to a doctor who can diagnose, recommend treatment and prescribe medication, when appropriate, for many of your medical issues. You should consider Teladoc when you have sinus problems, allergies, cold and flu symptoms, ear infections, etc. To access the Teladoc program, simply set up an account on the Teladoc website, then you can request an appointment anytime and from any place where you have access to a phone or online video. Certain states have restrictions around telemedicine. Please see the Summary Plan Description for additional information. You should always talk with your Primary Care Physician about all your health issues so that he or she can understand and help you manage your overall health. Your Primary Care Physician should handle your annual physical, any health concerns, and coordinate treatment plans. Although referrals are not required by the Plan, before going to a Specialist, we recommend that you talk with your Primary Care Physician to make sure you are seeking care from the right provider. When seeking a Specialist, remember to look for the blue star on the DocFind section of the aetna.com website. This designates the provider as a member of the Aexcel Network, which means they have been recognized by Aetna as a high quality, cost-effective provider. Urgent care is treatment for non-life-threatening injuries or illnesses such as fractures, whiplash, sport injuries, falls (less than 7 feet), cuts and minor lacerations, allergic reactions, infections, flu, gallstones, burns, or rashes. Urgent care clinics are freestanding buildings in busy areas. They typically have a physician on site and accept walk ins. Costs are typically higher than Retail Walk In Clinics, Teladoc or a Primary Care Physician office visit, but are much less than an Emergency Room visit. If you do need to use an Urgent Care Clinic, you can find an in-network clinic through DocFind, or by calling Aetna Member Services and speaking to a Health Concierge. Emergency Room visits should be limited to significant medical emergencies like: broken bones, head injury, knife/gunshot wound, or a severe burn; non-accidental, but critical life-threatening situations (e.g. heart attack, stroke, acute asthma attack, etc.); sudden onset of symptoms that suggest a serious or life-threatening situation could develop if left untreated (loss of consciousness, paralysis, shock, coughing blood, trouble breathing, chest pain, choking, etc.); and life endangering mental health or substance abuse situations. If you get care in an emergency room and your symptoms did not indicate an emergency, no benefits will be paid. If you are admitted to the hospital or surgery is performed, you must notify Medical Management of an emergency admission within 48 hours or you will be subject to a Precertification Penalty (see above). Emergency Room visits will vary widely in cost, based on the services rendered. Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 7 of 8

Prescription Drug Program Generic Medications Preferred Brand Medications Non-Preferred Brand Medications Maintenance Choice Preventive Drug List (Core 60 only) Important Reminders Generics are cost effective and offer the same benefits as their brand alternatives. The Premium 80 and Select 70 Medical Plan options include coverage for generics at an affordable copayment to encourage medication adherence. If you are enrolled in the Core 60 Plan option, you will pay the full cost of the prescription until you reach your full Deductible, unless your prescription is included in the Preventive Drug List (see below). Once you reach the full Plan Deductible, standard copayments will apply for future purchases within the Plan Year. Talk with your doctor to see if a generic alternative is right for you. CVS/caremark s Generics First program promotes the use of generic prescription drugs to address specific conditions (when generic options have a track record of success). This means that coverage for certain brand prescriptions will be limited when certain generic alternatives are available. If you are affected by this change, you or your doctor will be notified by CVS/caremark. Medications included in CVS/caremark s formulary of brand medications have a lower cost to you and to the Plan. Please visit benefits.carmax.com or caremark.com to review the Caremark Performance Drug List of preferred brand medications. The Performance Drug List is subject to change at any time. Any brand medication that is not a generic and is not included on the Caremark Performance Drug List is non-preferred. Talk with your doctor to see if a generic or preferred brand medication is right for you. The Maintenance Choice program is a convenient and cost effective way to receive your Maintenance Medication prescriptions. Maintenance Choice lets you choose to receive your Maintenance Medications at a local CVS Pharmacy or by mail from the CVS Caremark Mail Service Pharmacy. Maintenance Medications must be filled through the Maintenance Choice program. Members are encouraged to ask their doctors for a 90-day supply to maximize the benefit of the Maintenance Choice program. CVS list of Maintenance Medications is available on the CarMax Benefits website. Note: Some pharmacies offer a low cost generic program for certain maintenance medications that may provide you with a greater savings. Generally, when you use these programs, you will not use your CVS Caremark Member ID card and your purchase will not go through the Medical Plan. Caremark has established a list of preventive prescriptions which have been approved for copayments while meeting your Deductible in High Deductible Health Plans, like the Core 60 Plan option. If your prescription is included in the Caremark Preventive Drug List, your prescription will be subject to the standard copayment, including minimums and maximums that would apply after you reach your Plan Deductible. The Caremark Preventive Drug List is available on the CarMax Benefits website or at caremark.com. The Preventive Drug List is subject to change at any time. Retail pharmacies should be used for short-term prescriptions with no more than a 30-day supplies. Your prescription copayments or coinsurance amounts will count toward the Medical Plan s Out-of- Pocket Maximum. This summary provides Medical Plan Highlights and does not include all plan information. Refer to the Summary Plan Description for details. If there are any variations between this document and the Summary Plan Description, the Summary Plan Description prevails. Updated: 12/31/2016 Online in CarMax World and at benefits.carmax.com Page 8 of 8