Aetna Board Authorizes Additional Share Repurchases

HARTFORD, Conn., February 25, 2005 — Aetna Inc. (NYSE: ΑET) today announced that its Board of Directors has authorized the company to repurchase from time to time up to $750 million of its common stock. This authorization is in addition to the approximately $540 million remaining under Aetna’s prior authorization.

The company intends to continue buying shares from time to time using available cash, including proceeds from employee stock option exercises. Aetna had approximately 147 million common shares outstanding as of December 31, 2004.

As one of the nation’s leading providers of health care, dental, pharmacy, group life, disability and long-term care benefits, Aetna puts information and helpful resources to work for its approximately 13.7 million medical members, 11.9 million dental members, 8.4 million pharmacy members and 13.5 million group insurance members to help them make better informed decisions about their health care and protect their finances against health-related risks. Aetna provides easy access to cost-effective health care through a nationwide network of more than 655,000 health care professionals, including over 390,000 primary care and specialist doctors and 3,937 hospitals. For more information, please visit (Figures as of December 31, 2004)

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