Sec Form 4 Filing - YOST R DAVID @ AETNA INC /PA/ - 2004-06-08

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person YOST R DAVID 2. Issuer Name and Ticker or Trading Symbol AETNA INC /PA/ [ AET] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Former Director (Last) (First) (Middle) AMERISOURSEBERGEN CORPORATION, 1300 MORRIS DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 06/08/2004 (Street) CHESTERBROOK, PA19087 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 06/08/2004 M( 1 ) 1,241 A $ 86.33 4,741 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares PHANTOM STOCK UNITS ( 2 ) ( 3 ) 06/08/2004 A 72.396 ( 2 ) ( 2 ) COMMON STOCK 72.396 ( 3 ) 572.953 D PHANTOM STOCK UNITS ( 3 ) 06/08/2004 M 1,241 ( 1 ) ( 1 ) COMMON STOCK 1,241 $ 0 0 D PHANTOM STOCK UNITS ( 3 ) 06/08/2004 D 959 ( 4 ) ( 4 ) COMMON STOCK 959 $ 0 0 D DIRECTOR STOCK OPTION (RIGHT TO BUY) $ 77.5 06/08/2004 D 3,500 ( 5 ) ( 5 ) COMMON STOCK 3,500 $ 0 0 D DIRECTOR STOCK OPTIONS (RIGHT TO BUY) $ 42.12 06/08/2004 D 3,200 ( 6 ) 06/08/2009 COMMON STOCK 3,200 $ 0 1,600 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other YOST R DAVID AMERISOURSEBERGEN CORPORATION 1300 MORRIS DRIVE CHESTERBROOK, PA19087 Former Director Signatures R. DAVID YOST by Paige L. Falasco, Attorney in Fact 06/10/2004 Signature of Reporting Person Date

Explanation of Responses:

( 1 )CONVERSION OF PHANTOM STOCK UNITS INTO COMMON STOCK UPON TERMINATION OF SERVICE AS A DIRECTOR ( 2 )UNITS GRANTED PURSUANT TO AETNA INC. NON-EMPLOYEE DIRECTOR COMPENSATION PLAN (THE "PLAN"). SUBJECT TO TERMS OF PLAN, UNITS ARE CONVERTIBLE INTO SHARES OF AETNA COMMON STOCK, UPON TERMINATION OF SERVICE AS A DIRECTOR ( 3 )UNITS CONVERT TO COMMON STOCK ON A ONE FOR ONE BASIS. ( 4 )FORFEITURE OF PHANTOM UNITS FOR NO VALUE UPON TERMINATION OF SERVICE AS A DIRECTOR ( 5 )FORFEITURE OF STOCK OPTIONS FOR NO VALUE UPON TERMINATION OF SERVICE AS A DIRECTOR ( 6 )OPTION GRANTED UNDER THE PLAN AND EXERCISEABLE IN THREE EQUAL ANNUAL INSTALLMENTS BEGINNING FEBRUARY 28, 2004.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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