Aetna Board Member R. David Yost Resigns

HARTFORD, Conn., June 9, 2004 — Aetna (NYSE: ΑET) announced today that R. David Yost, chief executive officer of AmerisourceBergen Corporation, has resigned from the Aetna Board of Directors.

Yost issued this statement. "I have enjoyed serving on the Aetna Board of Directors during the company’s successful turnaround. However, as AmerisourceBergen is a pharmaceutical services corporation, and Aetna now has its own pharmacy benefit management business, I think that it would be appropriate for me to leave the Aetna Board at this time. I believe in the company’s strategy and wish the company well."

With Yost’s departure, there are 13 Aetna directors.

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 13.3 million medical members, 11.2 million dental members, 8.1 million pharmacy members and 12.4 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 618,000 health care professionals, including over 370,000 primary care and specialist doctors and 3,783 hospitals. (Figures as of March 31, 2004) For more information, please visit www.aetna.com.



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