X0305 4 2012-05-22 0 0000815094 ABIOMED INC ABMD 0001399519 Weber David M C/O ABIOMED, INC. 22 CHERRY HILL DRIVE DANVERS MA 01923 0 1 0 0 Chief Operating Officer Common Stock, $.01 par value 2012-05-22 4 A 0 6500 0 A 126880 D Stock Option (right to buy) 13.88 2008-04-23 2017-04-23 Common Stock 130000 130000 D Stock Option (right to buy) 13.80 2009-05-23 2018-05-23 Common Stock 12000 12000 D Stock Option (right to buy) 5.86 2010-05-28 2019-05-28 Common Stock 11000 65000 D Stock Options (right to buy) 5.86 2010-03-31 2019-05-28 Common Stock 34500 34500 D Stock Option (right to buy) 10.03 2011-06-03 2020-06-03 Common Stock 50000 50000 D Stock Option (right to buy) 22.44 2012-05-22 4 A 0 25000 22.44 A 2013-05-22 2022-05-22 Common Stock 25000 25000 D Grant to reporting person of option to buy the number of shares of Common Stock set forth in Table II, Column 7, under the ABIOMED, Inc. 2000 Stock Incentive Plan. This option becomes exercisable in annual 25% increments, commencing on the date shown in Table II, Column 6. Grant to reporting person of option to buy the number of shares of Common Stock set forth in Table II, Column 7, under the ABIOMED, Inc. 2008 Stock Incentive Plan. These options became exerciseable in full on March 31, 2010. Represents the grant of a share award for restricted stock units to which one third of the shares will be issued to the reporting person on each of May 22, 2013, May 22, 2014, and May 22, 2015, so long as he continues to be employeed by the issuer on the vesting dates. In addition, additional performance share awards of up to 13,500 restricted stock units was granted to this reporting person on May 22, 2012 with double trigger vesting pursuant to fiscal 2013 financial performance will determine whether 0%, 33%, 67% or 100% of the underlying restricted stock units are eligible for vesting at which point half of the units eligible for vesting will vest on May 22, 2014 and the other half of the units eligible for vesting will vest on May 22, 2015. /s/ Ian W. McLeod (by power of attorney) 2012-05-24