Annual Meeting Materials

2017 Annual Meeting of Stockholders

Date:

Time:

Location:

June 7, 2017

8:30 AM EDT

Idera Pharmaceuticals, Inc.

505 Eagleview Boulevard,

Suite 212

Exton, PA 19341

Call (617) 679-5500

Fax (617) 679-5500

rdoody@iderapharma.com