2018 Guide to Effective Proxies

6 TH EDITION | GUIDE TO EFFECTIVE PROXIES 394 PAY RATIO The annual total compensation of the CEO of the Corporation for 2017 was $17,495,119. The median of the annual total compensation of all employees of the Corporation except the CEO for 2017 was $161,562. The ratio of the annual total compensation of the CEO for 2017 to the median of the annual total compensation of all employees was 108:1. The median employee was identified as of October 1, 2017, based on total taxable wages for the most recently completed prior fiscal year as shown in the Corporation’s records. No estimates or sampling methodologies were used for this purpose. No cost-of-living adjustments were made and the taxable wages of employees employed for less than the full fiscal year were not annualized. “Employees” were defined based on applicable employment and tax laws. For purposes of this disclosure, as permitted by SEC rules, the value of nondiscriminatory benefits is included in annual total compensation of both the median employee and the CEO. These nondiscriminatory benefits are long- term disability, basic life insurance, accidental death and dismemberment insurance, medical, and dental. We believe including these benefits provides a more accurate compensation ratio. Since SEC rules do not require inclusion of these generally available benefits in the Summary Compensation Table, the annual total compensation of the CEO shown above is slightly higher than the Total Compensation shown for the CEO in that table. ExxonMobil is a global company with employees in many countries around the world. As permitted by the de minimis exemption under the SEC rules, for purposes of identifying the median employee we have excluded employees from 36 countries, which represent in aggregate less than 5 percent of the Corporation’s total employees. As required, where any employees from a jurisdiction were excluded, all employees from that jurisdiction were excluded. In total, as detailed in the table below 2,295 employees were excluded under the de minimis exemption out of a total number of worldwide employees of 72,557. Countries Excluded / Number of Employees 1. Colombia 416 10. Sweden 74 19. New Caledonia 28 28. Greece 7 2. Egypt 346 11. Taiwan 62 20. South Korea 21 29. Ukraine 5 3. Mexico 256 12. Japan 57 21. Romania 20 30. Vietnam 4 4. Peru 152 13. Guyana 53 22. N. Mariana Islands 17 31. Tanzania 4 5. Qatar 142 14. Guam 40 23. Ecuador 14 32. Micronesia 4 6. Turkey 123 15. Poland 38 24. Spain 13 33. Azerbaijan 3 7. Finland 101 16. Cyprus 38 25. Saudi Arabia 13 34. Luxembourg 3 8. New Zealand 83 17. Fiji 33 26. South Africa 10 35. Cameroon 2 9. United Arab Emirates 76 18. Kazakhstan 29 27. Denmark 7 36. Iraq 1 Total Number of Employees Excluded 2,295 60 2018 Proxy Statement EXXON MOBIL CORPORATION