EXHIBIT 99.1

IRVING, Texas – October 30, 2015 – Exxon Mobil Corporation today announced estimated third quarter 2015 earnings of $4.2 billion, or $1.01 per diluted share, compared with $8.1 billion a year earlier. Significantly lower Upstream realizations more than offset higher Downstream and Chemical earnings.

“We maintain a relentless focus on business fundamentals, including cost management, regardless of commodity prices,” said Rex W. Tillerson, chairman and chief executive officer. “Quarterly results reflect the continued strength of our Downstream and Chemical businesses and underscore the benefits of our integrated business model.”

Downstream segment earnings nearly doubled from the third quarter of 2014 due to stronger refining margins. Chemical results, comparable with the year‑ago quarter, reflect continued strength in product margins and the quality of the company’s product and asset mix.

Upstream production volumes increased 2.3 percent, or 87,000 barrels per day, to 3.9 million oil‑equivalent barrels per day. Liquids volumes of 2.3 million barrels per day rose 13 percent driven by new developments in Canada, Indonesia, the United States, Angola and Nigeria.

During the quarter, the corporation distributed $3.6 billion to shareholders in the form of dividends and share purchases to reduce shares outstanding.

Third Quarter 2015 vs. Third Quarter 2014

Upstream earnings were $1.4 billion in the third quarter of 2015, down $5.1 billion from the third quarter of 2014. Lower liquids and gas realizations decreased earnings by $5.1 billion, while volume and mix effects, driven by new developments, increased earnings by $110 million. All other items decreased earnings by $70 million.

On an oil‑equivalent basis, production increased 2.3 percent from the third quarter of 2014. Liquids production totaled 2.3 million barrels per day, up 266,000 barrels per day, with project ramp‑up and entitlement effects partly offset by field decline. Natural gas production was 9.5 billion cubic feet per day, down 1.1 billion cubic feet per day from 2014 due to regulatory restrictions in the Netherlands and field decline, partly offset by project volumes.

U.S. Upstream earnings declined $1.7 billion from the third quarter of 2014 to a loss of $442 million in the third quarter of 2015. Non‑U.S. Upstream earnings were $1.8 billion, down $3.4 billion from the prior year.

Downstream earnings were $2 billion, up $1 billion from the third quarter of 2014. Stronger margins increased earnings by $1.4 billion. Lower refining volumes due to higher maintenance‑related activities decreased earnings by $280 million. All other items, including maintenance‑driven expenditures partly offset by favorable foreign exchange impacts, decreased earnings by $110 million. Petroleum product sales of 5.8 million barrels per day were 211,000 barrels per day lower than the prior year.

Earnings from the U.S. Downstream were $487 million, up $27 million from the third quarter of 2014. Non‑U.S. Downstream earnings of $1.5 billion were $982 million higher than last year.

Chemical earnings of $1.2 billion were $27 million higher than the third quarter of 2014. Margins increased earnings by $210 million, benefiting from lower feedstock costs. Volume mix effects increased earnings by $30 million. All other items, primarily unfavorable foreign exchange effects, decreased earnings by $210 million. Third quarter prime product sales of 6.1 million metric tons were 167,000 metric tons lower than the prior year's third quarter.

Corporate and financing expenses were $378 million for the third quarter of 2015, down $192 million from the third quarter of 2014 driven by favorable tax and financing items.

During the third quarter of 2015, ExxonMobil purchased 6.5 million shares of its common stock for the treasury to reduce the number of shares outstanding at a cost of $500 million. Share purchases to reduce shares outstanding are currently anticipated to equal $500 million in the fourth quarter of 2015. Purchases may be made in both the open market and through negotiated transactions, and may be increased, decreased, or discontinued at any time without prior notice.

First Nine Months 2015 vs. First Nine Months 2014

Upstream earnings were $6.2 billion, down $15.8 billion from the first nine months of 2014. Lower realizations decreased earnings by $15.1 billion. Favorable volume and mix effects increased earnings by $680 million. All other items, primarily the absence of prior year asset management gains, decreased earnings by $1.5 billion.

On an oil‑equivalent basis, production of 4 million barrels per day was up 2.7 percent compared to the same period in 2014. Liquids production of 2.3 million barrels per day increased 213,000 barrels per day, with project ramp‑up and entitlement effects partly offset by field decline. Natural gas production of 10.5 billion cubic feet per day decreased 630 million cubic feet per day from 2014 as regulatory restrictions in the Netherlands and field decline were partly offset by project ramp‑up and entitlement effects.

U.S. Upstream earnings declined $4.2 billion from 2014 to a loss of $541 million for the first nine months of 2015. Earnings outside the U.S. were $6.8 billion, down $11.6 billion from the prior year.

Downstream earnings of $5.2 billion increased $2.7 billion from 2014. Stronger margins increased earnings by $3.5 billion. Volume and mix effects decreased earnings by $280 million. All other items, including higher maintenance expense, decreased earnings by $580 million. Petroleum product sales of 5.8 million barrels per day were 107,000 barrels per day lower than 2014.

U.S. Downstream earnings were $1.5 billion, a decrease of $153 million from 2014. Non‑U.S. Downstream earnings were $3.7 billion, up $2.8 billion from the prior year.

Chemical earnings of $3.5 billion increased $367 million from 2014. Higher margins increased earnings by $790 million. Favorable volume mix effects increased earnings by $130 million. All other items, including unfavorable foreign exchange effects partly offset by asset management gains, decreased earnings by $560 million. Prime product sales of 18.2 million metric tons were down 287,000 metric tons from 2014.

Corporate and financing expenses were $1.5 billion in the first nine months of 2015, down $231 million from 2014.

During the first nine months of 2015, ExxonMobil purchased 38 million shares of its common stock for the treasury at a gross cost of $3.3 billion. These purchases included $2.5 billion to reduce the number of shares outstanding, with the balance used to acquire shares in conjunction with the company’s benefit plans and programs.

ExxonMobil will discuss financial and operating results and other matters during a webcast at 8:30 a.m. Central Time on October 30, 2015. To listen to the event or access an archived replay, please visit www.exxonmobil.com. 

Cautionary Statement

Statements relating to future plans, projections, events or conditions are forward‑looking statements. Actual results, including project plans, costs, timing, and capacities; capital and exploration expenditures; resource recoveries; and share purchase levels, could differ materially due to factors including: changes in oil or gas prices or other market or economic conditions affecting the oil and gas industry, including the scope and duration of economic recessions; the outcome of exploration and development efforts; changes in law or government regulation, including tax and environmental requirements; the outcome of commercial negotiations; changes in technical or operating conditions; and other factors discussed under the heading "Factors Affecting Future Results" in the “Investors” section of our website and in Item 1A of ExxonMobil's 2014 Form 10-K. We assume no duty to update these statements as of any future date.

Frequently Used Terms

This press release includes cash flow from operations and asset sales, which is a non‑GAAP financial measure. Because of the regular nature of our asset management and divestment program, we believe it is useful for investors to consider proceeds associated with the sales of subsidiaries, property, plant and equipment, and sales and returns of investments together with cash provided by operating activities when evaluating cash available for investment in the business and financing activities. A reconciliation to net cash provided by operating activities is shown in Attachment II. References to quantities of oil or natural gas may include amounts that we believe will ultimately be produced, but that are not yet classified as “proved reserves” under SEC definitions. Further information on ExxonMobil's frequently used financial and operating measures and other terms is contained under the heading "Frequently Used Terms" available through the “Investors” section of our website at exxonmobil.com.

Reference to Earnings

References to corporate earnings mean net income attributable to ExxonMobil (U.S. GAAP) from the consolidated income statement. Unless otherwise indicated, references to earnings, Upstream, Downstream, Chemical and Corporate and Financing segment earnings, and earnings per share are ExxonMobil's share after excluding amounts attributable to noncontrolling interests.

The term “project” as used in this release can refer to a variety of different activities and does not necessarily have the same meaning as in any government payment transparency reports.

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