VIA EDGAR

 

April 3, 2014

 

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C.  20549

Attn:  Jim B. Rosenberg, Senior Assistant Chief Accountant, Division of Corporation Finance

 

Re:

 

Alkermes Public Limited Company

 

 

Form 10-KT for the Transition Period Ended December 31, 2013

 

 

Filed February 27, 2014

 

 

File No. 001-35299

 

Dear Mr. Rosenberg:

 

We acknowledge receipt of your comment letter dated April 1, 2014 with respect to the Alkermes Public Limited Company Form 10-KT for the transition period ended December 31, 2013.

 

We respectfully request an extension of 15 business days in order to adequately respond to your comments, and our response will be submitted no later than May 5, 2014.

 

 

 

Sincerely,

 

 

 

 

 

/s/ James M. Frates

 

James M. Frates

 

Senior Vice President and Chief Financial Officer

 

Alkermes Public Limited Company