Amgen announces initial results of tender offer for outstanding shares of Micromet, Inc.

Amgen (“Amgen”) (NASDAQ: AMGN) announced today that all conditions to the closing of the tender offer (the “Offer”) by a wholly owned subsidiary, “Merger Sub”, to acquire all outstanding shares of common stock of Micromet, Inc. (“Micromet”) (NASDAQ: MITI) for $11.00 per share in cash have been satisfied.

The depositary for the Offer has advised Amgen that, as of the expiration of the Offer at 12:00 midnight, New York City time, at the end of Thursday, March 1, 2012, approximately 80,025,097 million Micromet shares had been validly tendered and not withdrawn pursuant to the Offer, which tendered shares represent approximately 83.95 percent of the outstanding shares of Micromet. Amgen has accepted for payment, and expects to promptly pay for, all such tendered shares. In addition, approximately 3,150,586 million additional Micromet shares have been tendered by guaranteed delivery.

Amgen also announced the commencement of a subsequent offering period that is scheduled to expire at 12:00 Midnight, New York City time, at the end of March 6, 2012. Any shares validly tendered during this subsequent offering period will be accepted immediately for payment, and tendering stockholders will thereafter promptly be paid the same offer price of $11.00 per Micromet share tendered. The procedures for tendering shares during the subsequent offering period are the same as those applicable to the initial offering period as described in the offer to purchase, except that shares tendered during the subsequent offering period may not be withdrawn.

Following completion of the subsequent offering period, Amgen and Merger Sub intend to complete the acquisition of Micromet through a merger of Merger Sub with and into Micromet under Delaware law. Micromet stockholders who do not tender their shares of Micromet common stock in the Offer will not receive payment for their shares until following the completion of the merger.