NOVANTA INC — Director's Dealing 2015

May 15, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GSI GROUP INC (GSIG)
CIK: 0001076930
Period of Report: 2015-05-14

Reporting Person: Buckley Robert (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-14	Common Stock	S	8100	$14.6615	Disposed	141329	Direct

Footnotes

F1: The sales reported in this filing were made to satisfy personal tax obligations of the reporting person.

F2: This transaction was executed in multiple trades at prices ranging from $14.64 to $14.76. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.