XTO Energy Inc. Announces Offers to Purchase Certain of Its Debt Securities for Cash

IRVING, Texas--(BUSINESS WIRE)-- XTO Energy Inc. ("XTO"), a wholly-owned subsidiary of Exxon Mobil Corporation ("ExxonMobil") (NYSE: XOM), announced today the commencement of cash tender offers (each, an "Offer") for any and all of its outstanding debt securities in the series specified in the table below (the "Securities") with a total principal amount outstanding of approximately $3,831 million. The Securities are fully and unconditionally guaranteed by ExxonMobil, although such guarantee may be revoked in certain circumstances.

Each Offer will commence on December 9, 2010, and will expire at 5:00 p.m., New York City time, on December 16, 2010 (the "Expiration Time"), unless extended or earlier terminated, in either case, by XTO in its sole discretion. Each Offer is being made pursuant to an Offer to Purchase dated December 9, 2010 and a related Letter of Transmittal, which set forth a more detailed description of the Offers. Holders of the Securities are urged to read carefully the Offer to Purchase and Letter of Transmittal before making any decision with respect to the Offers.

The following table summarizes the material pricing terms of the Offers:

Title of           CUSIP No.  Principal Amount   UST Reference   Fixed Spread
Securities                    Outstanding        Security        (bps)

7.50% Senior                                     0.500% UST due
Notes due April    98385XAA4  $346,895,000       November 30,    27
15, 2012                                         2012

5.90% Senior                                     0.500% UST due
Notes due August   98385XAK2  $550,000,000       November 30,    4
1, 2012                                          2012

6.25% Senior                                     0.500% UST due
Notes due April    98385XAC0  $386,270,000       November 15,    27
15, 2013                                         2013

4.625% Senior                                    0.500% UST due
Notes due June     98385XAN6  $400,000,000       November 15,    13
15, 2013                                         2013

5.75% Senior                                     0.500% UST due
Notes due          98385XAS5  $500,000,000       November 15,    37.5
December 15,                                     2013

4.90% Senior                                     1.375% UST due
Notes due          98385XAD8  $500,000,000       November 30,    -50
February 1, 2014                                 2015

5.00% Senior                                     1.375% UST due
Notes due          98385XAF3  $348,000,000       November 30,    -10
January 31, 2015                                 2015

5.30% Senior                                     1.375% UST due
Notes due June     98385XAG1  $400,000,000       November 30,    5
30, 2015                                         2015

5.65% Senior                                     1.375% UST due
Notes due April    98385XAH9  $400,000,000       November 30,    35
1, 2016                                          2015

The applicable Total Consideration payable for each $1,000 principal amount of the Securities validly tendered and accepted for payment pursuant to each Offer will be determined in the manner described in the Offer to Purchase by reference to the fixed spread over the yield to maturity of the applicable UST Reference Security listed above, calculated by the Dealer Managers for the Offers as of 2:00 p.m., New York City time, on December 16, 2010, the date on which each Offer expires. In addition to the applicable Total Consideration, XTO will also pay accrued and unpaid interest on Securities purchased from the applicable last interest payment date up to, but not including, the settlement date. The settlement date for each Offer is expected to be promptly after the expiration of each Offer, and if each Offer is not extended or earlier terminated, is currently expected to be December 17, 2010.

To receive the applicable Total Consideration, holders of the Securities must validly tender and not validly withdraw their Securities prior to the Expiration Time. Securities tendered may be withdrawn at any time prior to the Expiration Time, by following the procedures described in the Offer to Purchase.

The obligation of XTO to accept for purchase and to pay the Total Consideration and the accrued and unpaid interest on the Securities pursuant to each Offer is not subject to any minimum tender condition, but is subject to satisfaction or waiver of certain other conditions described in the Offer to Purchase. No Offer is conditioned on completion of any other Offer.

XTO has retained Barclays Capital Inc. and J.P. Morgan Securities LLC to serve as Dealer Managers for the Offers. Global Bondholder Services Corporation has been retained to serve as the Information Agent and the Depositary for the Offers.

Questions regarding the Offers may be directed to: Barclays Capital Inc. at (800) 438-3242 (toll-free) or (212) 528-7581, or J.P. Morgan Securities LLC at (866) 834-4666 (toll-free) or (212) 834-4811. Requests for copies of the Offer to Purchase and related Letter of Transmittal may be directed to Global Bondholder Services Corporation at 866-952-2200 (toll-free) or 212-430-3774.

This news release shall not be construed as an offer to purchase or a solicitation of an offer to purchase any of the Securities or any other securities. XTO, subject to applicable law, may amend, extend or terminate the Offers and may postpone the acceptance for purchase of, and payment for, the Securities so tendered. The Offers are not being made in any jurisdiction in which the making or acceptance thereof would not be in compliance with the securities, blue sky or other laws of such jurisdiction. In any jurisdiction in which the Offers are required to be made by a licensed broker or dealer, they shall be deemed to be made on behalf of XTO by the Dealer Managers. None of XTO, ExxonMobil, the Dealer Managers, the Information Agent or the Depositary makes any recommendations as to whether holders of the Securities should tender their Securities pursuant to the Offers.

About ExxonMobil

ExxonMobil, the largest publicly traded international oil and gas company, uses technology and innovation to help meet the world's growing energy needs. ExxonMobil holds an industry-leading inventory of resources, is the largest refiner and marketer of petroleum products, and its chemical company is one of the largest in the world. For more information, visit www.exxonmobil.com.

    Source: Exxon Mobil Corporation