X0303 4 2010-02-08 0001122304 AETNA INC /PA/ AET 0001185243 WILLIAMS RONALD A AETNA INC. 151 FARMINGTON AVENUE HARTFORD CT 06156 1 1 0 0 Chairman and CEO Common Stock 2010-02-09 4 M 0 33592 A 0 D Common Stock 2010-02-09 4 F 0 10757 28.97 D 265058 D Common Stock 10000 I By 2002 GRAT Common Stock 65000 I By 2008 GRAT Restricted Stock Unit 2010-02-09 4 M 0 33592 0 D Common Stock 33592 0 D Market Stock Unit 2010-02-08 4 A 0 295421 0 A Common Stock 295421 295421 D Represents vesting of previously reported Restricted Stock Units granted under the Aetna Inc 2000 Stock Incentive Plan. Each Restricted Stock Unit represents a right to receive one share of Aetna Inc. Common Stock net of taxes. Represents tax withholding on vesting of previously reported Restricted Stock Units. Includes 120,000 shares held in the Williams Family Trust of which Mr. Williams and his spouse are sole trustees and beneficiaries, and 1,074 shares acquired under the Aetna Inc. Employee Stock Purchase Plan. Shares held in Grantor Retained Annuity Trust of which Mr. Williams is the sole trustee. Restricted Stock Units granted under the Aetna Inc. 2000 Stock Incentive Plan. Each Market Stock Unit represents a right to receive up to 1.5 shares of Aetna Inc. Common Stock net of taxes. Vesting amount will be determined based on the weighted average closing stock price for the thirty trading days prior to the vest date. Market Stock Units granted under the Aetna Inc. 2000 Stock Incentive Plan, units will vest on 2/8/12. Ronald A. Williams by Judith H. Jones, Attorney -in-fact 2010-02-10