Exhibit 99




To:    Directors and Executive Officers of Exxon Mobil Corporation

Re:    Restriction on Transactions in ExxonMobil Equity Securities

Date:  March 10, 2003

Due to an upcoming change in the administrator for the ExxonMobil Savings Plan,
there will be limitations on ExxonMobil stock transactions within the Plan
during a brief transition period. Specifically, purchase or sale orders for
ExxonMobil stock will not be accepted for heritage Mobil accounts on April 28
or April 29, 2003, or for ExxonMobil accounts on April 30, 2003.

The SEC recently adopted Regulation BTR to carry out provisions of the
Sarbanes-Oxley Act. In general, Reg. BTR and the Act prohibit transactions by
insiders involving ExxonMobil equity securities during periods in which
participants cannot purchase or sell ExxonMobil stock in the Savings Plan.

Although the Savings Plan transition may not technically trigger Reg. BTR,
securities transactions by ExxonMobil directors and executive officers will be
restricted as if Reg. BTR did apply.

Accordingly, except as noted below you may not acquire or dispose of ExxonMobil
equity securities during the period from April 28, 2003, through May 1, 2003
(the "restricted period").

Reg. BTR uses many of the same definitions as Section 16 under the Securities
Exchange Act of 1934. For example, "equity security" under Reg. BTR includes
not only ExxonMobil stock but "derivative securities" as that term is defined
under Section 16. Derivative securities include ExxonMobil stock options, as
well as notional or phantom stock accounts. Thus, you may not exercise an
ExxonMobil employee stock option during the restricted period.

Reg. BTR also follows the Section 16 concept of beneficial ownership and
"pecuniary interest." This means the prohibition on transactions during the
restricted period covers any securities that would be reflected on your Form 4
or Form 5 reports, including: securities beneficially owned by your spouse or
minor children; securities beneficially owned by adult children who are
dependents; securities beneficially owned by other family members who share
your home; and securities held by trusts in which you have an interest.

Please refer to the information you have previously been provided with respect
to your obligations under Section 16 for a fuller explanation of terms such as
"equity security," "beneficial ownership," and "pecuniary interest."










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Reg. BTR exempts limited types of transactions, such as dividend reinvestment;
gifts; and certain transactions involving securities that were not acquired in
connection with your service or employment as an ExxonMobil director or
executive officer. However, given the complexity of these rules and the short
time period involved, you are urged to avoid any discretionary change in your
beneficial ownership of ExxonMobil equity securities during the restricted
period.

If you have any questions or would like more information on this subject,
please contact Dick Gutman (972-444-1480) or Jim Parsons (972-444-1478) in the
Law Department, Exxon Mobil Corporation, 5959 Las Colinas Blvd., Irving, Texas
75039. In particular, any change in your beneficial ownership during the
restricted period must be pre-cleared to determine that the transaction
qualifies for one of the limited exemptions under Reg. BTR.








































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