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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Bertolini Mark T   2. Issuer Name and Ticker or Trading Symbol AETNA INC /PA/ [AET] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman and CEO (Last) (First) (Middle) 151 FARMINGTON AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 03/02/2018 (Street) HARTFORD, CT 06156 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 03/02/2018   M   8,358 (1) A (2) 285,207 D   Common Stock 03/02/2018   F   3,791 (3) D $ 177.53 281,416 D   Common Stock 03/02/2018   M   41,195 (4) A (5) 322,611 D   Common Stock 03/02/2018   F   18,683 (6) D $ 177.53 303,928 D   Common Stock               119,447 I By CLAT (7) Common Stock               295,436 I By 2016 GRAT (8) Common Stock               158,635 I By 2017 GRAT (9) Common Stock               107,576 I By 2017 GRAT II (10)

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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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		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
Restricted Stock Units	(2)	03/02/2018		M			8,358	(11)	(11)	Common Stock	8,358	$ 0	0	D
Performance Stock Units	(5)	03/02/2018		M			34,329	(12)	(12)	Common Stock	34,329	$ 0	0	D
Restricted Stock Units	(2)	03/02/2018		A		76,044		(13)	(13)	Common Stock	76,044	$ 0	76,044	D
Restricted Stock Units	(2)	03/02/2018		A		17,572		(14)	(14)	Common Stock	17,572	$ 0	17,572	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Bertolini Mark T 151 FARMINGTON AVENUE HARTFORD, CT 06156	X		Chairman and CEO

Signatures

Mark T. Bertolini by Judith H. Jones, Attorney-in-Fact		03/06/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents vesting of previously reported Restricted Stock Units ("RSUs") granted under the Aetna Inc. 2010 Stock Incentive Plan (the "Plan").
(2)	Each RSU represents a right to receive one share of Aetna Inc. Common Stock net of taxes.
(3)	Represents tax withholding on vesting of previously reported RSUs.
(4)	Represents vesting of previously reported Performance Stock Units ("PSUs") granted under the Plan.
(5)	Each PSU represents a right to receive up to two shares of Aetna Inc. Common Stock net of taxes.
(6)	Represents tax withholding on vesting of previously reported PSUs.
(7)	Represents shares held in Charitable Lead Annuity Trust ("CLAT") where Reporting Person is investment advisor.
(8)	Represents shares held by 2016 Grantor Retained Annuity Trust ("GRAT") where Reporting Person is sole trustee.
(9)	Represents shares held by 2017 GRAT where Reporting Person is sole trustee.
(10)	Represents shares held by 2017 GRAT II where Reporting Person is sole trustee.
(11)	RSUs granted under the Plan.
(12)	PSUs granted under the Plan.
(13)	RSUs granted under the Plan vest in three annual installments beginning December 2, 2018.
(14)	RSUs granted under the Plan vest in three annual installments beginning March 2, 2019.

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