Aetna Chairman and CEO Adopts 10b5-1 Plan

Friday, March 27, 2009

HARTFORD, Conn. – Aetna (NYSE: AET) announced today that Ronald A. Williams, the company’s chairman and CEO, has adopted a prearranged trading plan in accordance with guidelines specified by Rule 10b5-1 under the Securities and Exchange Act of 1934, and the company’s policies with respect to insider sales.

Rule 10b5-1 permits officers and directors of public companies to adopt predetermined plans for selling specified amounts of stock. The plans may be entered into only when the officer or director is not in possession of material, nonpublic information and may be used to diversify investment portfolios over a period of time.

Under Williams’ Rule 10b5-1 plan, he will exercise employee stock options that were granted in 2001 and 2003 and which will expire in 2011 and 2013, and will programmatically sell the resulting 3,480,000 shares as part of his personal financial planning. Sales under the plan may occur from the second quarter of 2009 through early 2013.

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