X0303 4 2010-01-29 0 0001131907 MICROMET, INC. MITI 0001370820 Alder Matthias C/O MICROMET, INC. 6707 DEMOCRACY BLVD., STE. 505 BETHESDA MD 28017 0 1 0 0 SVP, General Counsel Stock Option (right to buy) 3.16 2010-01-29 4 A 0 21875 0 A 2010-01-29 2019-03-31 Common Stock 21875 21875 D On April 1, 2009, the Reporting Person was granted an option to purchase 37,500 shares of common stock, which was scheduled to vest based on the issuer's achievement of specified corporate performance criteria. On January 29, 2010, the compensation committee of the issuer's board of directors determined that the performance criteria were partially met, resulting in vesting of the option as to 21,875 shares. /s/ Ethan Danfer, Attorney-in-Fact 2010-02-02