DURHAM, N.C.--(BUSINESS WIRE)--Trimeris, Inc. (Nasdaq: TRMS) (“Trimeris”) today announced that in connection with the Agreement and Plan of Merger dated October 2, 2009, as amended, by and among Trimeris, Arigene Co., Ltd. and RTM Acquisition Company (“Arigene” and “Purchaser,” respectively) (the “Merger Agreement”), Arigene has requested through counsel that Trimeris consent to an extension of the expiration date of the tender offer for all of Trimeris’ outstanding shares of common stock commenced by Arigene and the Purchaser on October 19, 2009. Arigene has requested an extension of the expiration date of the tender offer to January 15, 2010.