Aon Completes Sale of Auto Insurance Specialists

CHICAGO, January 6, 2009: Aon Corporation today announced that it has completed the sale of all of the issued and outstanding equity interests of AIS Management, LLC, which is the parent company of Auto Insurance Specialists, LLC, to Mercury General Corporation.

Aon received $120 million in cash at the closing on January 2, and may receive potential earn out of up to $34.7 million in additional consideration payable over the two year period following the transaction closing date.