XTO Energy Inc. Announces Purchase of $16,835,000 Principal Amount of Its Debt Securities Pursuant to Change of Control Offers

IRVING, Texas--(BUSINESS WIRE)-- XTO Energy Inc. ("XTO"), a wholly owned subsidiary of Exxon Mobil Corporation ("ExxonMobil") (NYSE: XOM), announced today that the previously announced cash tender offers (each, a "Change of Control Offer") for any and all of its outstanding debt securities in the series specified in the table below (the "Securities") expired at 5:00 p.m., New York City time, on August 6, 2010. Withdrawal rights with respect to such Change of Control Offers expired at 5:00 p.m., New York City time, on August 10, 2010. On August 13, 2010, in accordance with the indentures governing the Securities, XTO accepted for purchase all of the Securities which were validly tendered and not validly withdrawn pursuant to the Change of Control Offers, representing a total aggregate principal amount of $16,835,000. Set forth in the table below is the aggregate principal amount of Securities of each series purchased pursuant to the relevant Change of Control Offer:

Title of Securities          CUSIP No.  Aggregate Principal Amount Accepted for
                                        Purchase

71/2% Senior Notes Due 2012  98385XAA4  $3,105,000

61/4% Senior Notes Due 2013  98385XAC0  $13,730,000

The purchase price paid for Securities accepted for purchase pursuant to each Change of Control Offer was 101% of the principal amount of such Securities, plus accrued and unpaid interest up to, but not including, August 13, 2010. Payment of such purchase price was made to The Depository Trust Company, as registered holder of the Securities, earlier today. XTO funded the purchase of the Securities with available cash on hand and inter-company borrowings from its parent, ExxonMobil.

The Change of Control Offers were made pursuant to the indentures governing the Securities, which require XTO to make an offer to purchase the Securities upon the occurrence of a change of control. The merger by which XTO became a wholly owned subsidiary of ExxonMobil, which was completed on June 25, 2010, constituted a change of control of XTO under such indentures.

The Bank of New York Mellon Trust Company, N.A. served as the Depositary for the Change of Control Offers.

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.

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

Released August 13, 2010