EXHIBIT 99.1

EXXON MOBIL CORPORATION ANNOUNCES ESTIMATED

FOURTH QUARTER 2012 RESULTS

EXXONMOBIL'S CHAIRMAN REX W. TILLERSON COMMENTED:

 “Energy is fundamental to economic growth and improved living standards. ExxonMobil’s strong financial performance enables continued investment in new energy supplies, which creates jobs and supports economic expansion.

Fourth quarter 2012 earnings were over $9.9 billion, up 6% from the fourth quarter of 2011.  Full year 2012 earnings were $44.9 billion, up 9% from 2011, with record earnings per share of $9.70.

Capital and exploration expenditures were a record $39.8 billion in 2012 as we continue pursuing opportunities to find and produce new supplies of oil and natural gas to meet global demand for energy.  

In 2012, the Corporation distributed over $30 billion to shareholders through dividends and share purchases to reduce shares outstanding.”

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Fourth Quarter 2012 vs. Fourth Quarter 2011

Upstream earnings were $7,762 million in the fourth quarter of 2012, down $1,067 million from the fourth quarter of 2011.  Lower liquids realizations, partially offset by improved natural gas realizations, decreased earnings by $70 million.  Production volume and mix effects reduced earnings by $400 million.  All other items, including over $500 million of lower gains from asset sales, decreased earnings by a net $600 million.

On an oil-equivalent basis, production decreased 5.2% from the fourth quarter of 2011. Excluding the impacts of entitlement volumes, OPEC quota effects and divestments, production decreased 2.1%.

Liquids production totaled 2,203 kbd (thousands of barrels per day), down 47 kbd from the fourth quarter of 2011.  Excluding the impacts of entitlement volumes, OPEC quota effects and divestments, liquids production was down 1.4%, as field decline was partially offset by project ramp-up in West Africa and lower downtime.

Fourth quarter natural gas production was 12,541 mcfd (millions of cubic feet per day), down 1,136 mcfd from 2011.  Excluding the impacts of entitlement volumes and divestments, natural gas production was down 2.8%, as field decline was partially offset by higher demand and lower downtime.

Earnings from U.S. Upstream operations were $1,604 million, $420 million higher than the fourth quarter of 2011.  Non-U.S. Upstream earnings were $6,158 million, down $1,487 million from the prior year.

Downstream earnings were $1,768 million, up $1,343 million from the fourth quarter of 2011.  Stronger refining-driven margins increased earnings by $1.2 billion, while volume and mix effects contributed an additional $80 million.  All other items increased earnings by about $80 million.  Petroleum product sales of 6,108 kbd were 385 kbd lower than last year's fourth quarter due mainly to the Japan restructuring and divestments.

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Earnings from the U.S. Downstream were $697 million, up $667 million from the fourth quarter of 2011.  Non-U.S. Downstream earnings of $1,071 million were $676 million higher than last year.

Chemical earnings of $958 million were $415 million higher than the fourth quarter of 2011.  Higher margins, mainly commodities, increased earnings by $330 million.  All other items increased earnings by $90 million.  Fourth quarter prime product sales of 5,901 kt (thousands of metric tons) were 370 kt lower than last year's fourth quarter due mainly to the Japan restructuring.

Corporate and financing expenses were $538 million for the fourth quarter of 2012, up $141 million from the fourth quarter of 2011, due mainly to tax impacts.

During the fourth quarter of 2012, Exxon Mobil Corporation purchased 59 million shares of its common stock for the treasury at a gross cost of $5.3 billion.  These purchases included $5.0 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.  Share purchases to reduce shares outstanding are currently anticipated to equal $5 billion in the first quarter of 2013.  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.

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Full Year 2012 vs. Full Year 2011

Earnings of $44,880 million increased $3,820 million from 2011.  Earnings per share increased 15% to $9.70.  

Upstream earnings were $29,895 million, down $4,544 million from 2011.  Lower liquids realizations, partly offset by improved natural gas realizations, decreased earnings by about $100 million.  Production volume and mix effects decreased earnings by $2.3 billion.  All other items, including higher operating expenses, unfavorable tax items, lower gains on asset sales, and unfavorable foreign exchange effects, reduced earnings by $2.1 billion.

On an oil-equivalent basis, production was down 5.9% compared to 2011.  Excluding the impacts of entitlement volumes, OPEC quota effects and divestments, production was down 1.7%.

Liquids production of 2,185 kbd decreased 127 kdb from 2011.  Excluding the impacts of entitlement volumes, OPEC quota effects and divestments, liquids production was

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down 1.6%, as field decline was partly offset by project ramp-up in West Africa and lower downtime.

Natural gas production of 12,322 mcfd decreased 840 mcfd from 2011.  Excluding the impacts of entitlement volumes and divestments, natural gas production was down 1.9%, as field decline was partially offset by higher demand and lower downtime.

Earnings from U.S. Upstream operations for 2012 were $3,925 million, down $1,171 million from 2011.  Earnings outside the U.S. were $25,970 million, down $3,373 million.

Downstream earnings of $13,190 million increased $8,731 million from 2011.  Stronger refining-driven margins increased earnings by $2.6 billion, while volume and mix effects increased earnings by about $200 million.  All other items increased earnings by $5.9 billion due primarily to the $5.3 billion gain associated with the Japan restructuring and other divestment gains.  Petroleum product sales of 6,174 kbd decreased 239 kbd from 2011 due mainly to the Japan restructuring and divestments.

U.S. Downstream earnings were $3,575 million, up $1,307 million from 2011.  Non-U.S. Downstream earnings were $9,615 million, an increase of $7,424 million from last year.

Chemical earnings of $3,898 million were $485 million lower than 2011.  Margins decreased earnings by $440 million, while volume effects lowered earnings by $100 million.  All other items increased earnings by $50 million, as a $630 million gain associated with the Japan restructuring and favorable tax impacts were mostly offset by unfavorable foreign exchange effects and higher operating expenses.  Prime product sales of 24,157 kt were down 849 kt from 2011.

Corporate and financing expenses were $2,103 million, down $118 million from 2011.

Gross share purchases for 2012 were $21.1 billion, reducing shares outstanding by 244 million shares.

Estimates of key financial and operating data follow.  

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ExxonMobil will discuss financial and operating results and other matters on a webcast at 8:30 a.m. Central time on February 1, 2013.  To listen to the event live or in archive, go to our website at 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 2011 Form 10-K.  We assume no duty to update these statements as of any future date.

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Frequently used terms

Consistent with previous practice, this press release includes both earnings excluding special items and earnings per share excluding special items.  Both are non-GAAP financial measures and are included to help facilitate comparisons of base business performance across periods. Reconciliation to net income attributable to ExxonMobil is shown in Attachment II.  The release also includes cash flow from operations and asset sales.  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 in this release to barrels of oil include amounts that are not yet classified as proved reserves under SEC definitions but that we believe will ultimately be produced.  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.

The term “project” as used in this release does not necessarily have the same meaning as under SEC Rule 13q-1 relating to government payment reporting.  For example, a single project for purposes of the rule may encompass numerous properties, agreements, investments, developments, phases, work efforts, activities and components, each of which we may also informally describe as a “project”.

Reference to Earnings

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

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