X0303 4 2010-01-29 0 0001131907 MICROMET, INC. MITI 0001413481 Reisenauer Mark L 6707 DEMOCRACY BOULEVARD SUITE 505 BETHESDA MD 20817 0 1 0 0 SVP, CCO Stock Option (right to buy) 3.16 2010-01-29 4 A 0 23333 0 A 2010-01-29 2019-03-31 Common Stock 23333 23333 D On April 1, 2009, the Reporting Person was granted an option to purchase 40,000 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 23,333 shares. /s/ Ethan Danfer, Attorney-in-Fact 2010-02-02