X0304 4 2011-08-15 0 0001076930 GSI GROUP INC GSIG 0001528099 CHANG PETER L C/O GSI GROUP INC. 125 MIDDLESEX TURNPIKE BEDFORD MA 01730 0 1 0 0 VP,Corp Contr,Chief Acctg Off Restricted Stock Units 2011-08-15 4 A 0 12000 0 A Common Shares 12000 12000 D Each Restricted Stock Unit represents the right to receive one GSI Group Inc. common share upon vesting of such Restricted Stock Unit. The Restricted Stock Units vest in three equal annual installments on August 15, 2012, August 15, 2013 and August 15, 2014. Exhibit 24 - Power of Attorney attached Paula A Pluta, Attorney-in-Fact 2011-08-17