CAMBRIDGE, Mass.--(BUSINESS WIRE)--June 22, 2006--Idera Pharmaceuticals (AMEX: IDP - News) today announced that its Board of Directors has authorized a one-for-eight reverse split of the Company’s common stock. The reverse stock split was approved by the Company’s stockholders at the annual meeting of stockholders held on June 7, 2006. The Company plans the reverse stock split to take effect after the close of trading on June 29, 2006.