NOVANTA INC - Director's Dealing 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GSI GROUP INC (GSIG)
CIK: 0001076930
Period of Report: 2013-08-15

Reporting Person: CHANG PETER L (Vice President-Corp Controller)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-08-15	Common Stock	M	4000	$8.44	Acquired	8884	Direct
2013-08-15	Common Stock	F	1304	$8.44	Disposed	7580	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-08-15	Restricted Stock Units	$	M	4000	Disposed		Common Stock (4000)	Direct

F1: Each Restricted Stock Unit represents the right to receive one GSI Group Inc. common share upon vesting of such Restricted Stock Unit.

F2: Each Restricted Stock Unit represents the right to receive one GSI Group Inc. common share upon vesting of such Resricted Stock Unit.

F3: The Restricted Stock Units vest in three equal annual installments on August 15, 2012, August 15, 2013 and August 15, 2014.