Aetna Board Of Directors Authorizes Additional Share Repurchases

HARTFORD, Conn., February 29, 2008 — Aetna Inc. (NYSE: AET) today announced that its Board of Directors has authorized the company to repurchase up to an additional $750 million of its common stock. This authorization is in addition to the approximately $700 million remaining under Aetna’s prior authorizations.

The company intends to continue buying shares in the open market from time to time. At December 31, 2007, Aetna had approximately 496 million shares outstanding.

Aetna is one of the nation’s leading diversified health care benefits companies, serving approximately 36.7 million people with information and resources to help them make better informed decisions about their health care. Aetna offers a broad range of traditional and consumer-directed health insurance products and related services, including medical, pharmacy, dental, behavioral health, group life and disability plans, and medical management capabilities and health care management services for Medicaid plans. Our customers include employer groups, individuals, college students, part-time and hourly workers, health plans, governmental units, government-sponsored plans and expatriates.

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