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.     )

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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

x Definitive Additional Materials

¨ Soliciting Material Under Rule 14a-12

ARIAD Pharmaceuticals, 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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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Stockholder Meeting to Be Held on July 21, 2016.

	ARIAD PHARMACEUTICALS, INC. ARIAD PHARMACEUTICALS, INC. 26 LANDSDOWNE STREET CAMBRIDGE, MA 02139	Meeting Information
		Meeting Type:         Annual Meeting
		For holders as of:    May 25, 2016
		Date:   July 21, 2016                Time: 10:00 AM EDT
		Location: The Company’s Offices                   26 Landsdowne Street                   Cambridge, Massachusetts 02139
		You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting.
		See the reverse side of this notice to obtain proxy materials and voting instructions.

—  Before You Vote  —

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

NOTICE                    PROXY STATEMENT                    ANNUAL REPORT                    SHAREHOLDER LETTER

How to View Online:

Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

                               1) BY INTERNET:         www.proxyvote.com

                               2) BY TELEPHONE:     1-800-579-1639

                               3) BY E-MAIL*:             sendmaterial@proxyvote.com

*  If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before July 7, 2016 to facilitate timely delivery.

—  How To Vote  —

Please Choose One of the Following Voting Methods

	Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.
	Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.
	Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items

The Board of Directors recommends you vote FOR proposals 1, 2, 3 and 4.

1. To adopt an amendment to our Restated Certificate of Incorporation to declassify the Board of Directors and provide for the annual election of directors.

2. To elect one Class 1 director to serve on our Board of Directors.

Nominee:

2a. Alexander J. Denner, Ph.D.

3. To approve, on an advisory basis, the compensation of our named executive officers as disclosed in the proxy statement.

4. To ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for 2016.

NOTE: To transact such other business as may properly come before the Annual Meeting and any adjournments or postponements thereof.