Repligen Announces Support of Amended Stockholder Proposal

Repligen Corporation RGEN today announced that it will support an amended stockholder proposal based upon an agreement with Ronald L. Chez, the proponent of the proposal. Mr. Chez submitted an amended proposal to increase the proposed threshold necessary for calling a special meeting of stockholders to the holders of 30% of Repligen's voting shares, as compared to a 20% threshold in his original proposal. In consideration of the change to Mr. Chez's proposal, Repligen's board of directors agreed to recommend that Repligen stockholders vote “FOR” this amended stockholder proposal. In addition, Mr. Chez agreed to vote all of his shares of Repligen stock in accordance with the recommendations of Repligen's board of directors with respect to each of the proposals to be acted upon at the 2012 annual meeting of Repligen's stockholders.