UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934 (Amendment No. )

Filed by the Registrant Filed by a Party other than the Registrant      

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  Preliminary Proxy Statement
Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
Definitive Proxy Statement
  Definitive Additional Materials
Soliciting Material Under Rule 14a-12

Aetna Inc.

(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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Annual Meeting and Proxy Materials

The following message is from Kay Mooney, vice president, benefits and well-being.

Aetna’s 2018 Annual Meeting of Shareholders will be held on Friday, May 18, 2018.

Early next week, Broadridge Financial Solutions, the distribution agent for the trustee of the 401(k) Plan, will send an email to each active employee who held Aetna stock through the 401(k) Plan at the close of business on March 16, 2018 with this subject line: “AETNA 2018 ANNUAL MEETING-VOTING INSTRUCTIONS FOR 401(K) SHAREHOLDERS.”

If you receive this email, you may exercise your right to vote by Internet or by telephone as outlined in the email. Shares held in the 401(k) Plan are voted by the 401(k) Plan trustee in proportion to the votes the trustee receives from Aetna shareholders with respect to the shares they own through the 401(k) Plan. Your individual voting instructions are strictly confidential and will not be disclosed to Aetna.