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

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 1, 2011

ARIAD Pharmaceuticals, Inc.
(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (617) 494-0400


Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

⃞ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

⃞ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

⃞ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

⃞ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01   Other Events.

On August 1, 2011 ARIAD Pharmaceuticals, Inc. (“ARIAD”) announced that its ridaforolimus partner, Merck, has submitted a marketing authorization application (MAA) for ridaforolimus with the European Medicines Agency (EMA).  The submission occurred on July 29, 2011 and marks the start of Merck’s global submission strategy for ridaforolimus that includes Europe, the U.S., Canada, Asia-Pacific and Latin America and other key markets around the world.  Acceptance of the submission of the MAA by the EMA and approvals to market and sell ridaforolimus in Europe and the U.S. will trigger milestone payments from Merck to ARIAD.

A copy of the press release is being filed herewith as Exhibit 99.1 and the information contained therein is incorporated by reference into this Current Report on Form 8-K.

ITEM 9.01 Financial Statements and Exhibits

(d)   The following exhibit is filed with this report:

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

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