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): June 25, 2014

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):

(e) On June 25, 2014, the stockholders of ARIAD Pharmaceuticals, Inc. (the “Company”) approved, at the Company’s 2014 Annual Meeting of Stockholders, the adoption of the ARIAD Pharmaceuticals, Inc. 2014 Long-Term Incentive Plan (“LTIP”). A brief description of the LTIP is set forth in the Company’s definitive proxy statement on Schedule 14A filed with the Securities and Exchange Commission (the “SEC”) on May 9, 2014, under the heading “Proposal 3: Approval of the Adoption of the ARIAD Pharmaceuticals, Inc. 2014 Long-Term Incentive Plan,” and in definitive additional soliciting materials on Schedule 14A filed with the SEC on June 19, 2014, all of which are incorporated herein by reference. Such descriptions are qualified in their entirety by reference to the actual terms of the LTIP, a copy of which is filed as Exhibit 10.1 to this Current Report on Form 8-K.

(a) On June 25, 2014, the Company held its 2014 Annual Meeting of Stockholders. Of the 186,798,293 shares of common stock issued and outstanding and eligible to vote as of the record date of April 28, 2014, a quorum of 151,528,166 shares, or approximately 81% of the eligible shares, was present in person or represented by proxy.

(b) The following actions were taken at such meeting:

Proposal 1. The following nominees were reelected to serve on the Company’s Board of Directors as Class 2 Directors until the Company’s 2017 annual meeting of stockholders and until their successors are duly elected and qualified, based on the following votes:

Proposal 2. The Section 382 Rights Agreement designed to preserve the substantial amount of the Company’s net operating loss carry forwards and other tax benefits was approved, based on the following votes:

Proposal 3. The Company’s LTIP was approved, based on the following votes:

Proposal 4. The amendments to the Company’s Amended and Restated 1997 Employee Stock Purchase Plan, as amended, to increase the number of shares available for issuance thereunder and extend the term was approved, based on the following votes:

Proposal 5. The compensation of the Company’s named executive officers was approved, on an advisory basis, based on the following votes:

Proposal 6. The selection of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for 2014 was ratified, based on the following results:

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.

Date: June 25, 2014