Item 7.01. Regulation FD Disclosure

As disclosed in GSI Group Inc. (the "Company") 2012 second quarter Form 10-Q, beginning in the second quarter ended June 29, 2012, the Company committed to a plan for the sale of the Semiconductor Systems and Laser Systems businesses. As a result, these businesses have been reported as discontinued operations in the consolidated financial statements. Therefore, the Company reports its continuing operations under the Laser Products and Precision Motion and Technologies segments.

The Company is providing, in Exhibit 99.1 to this Current Report on Form 8-K, unaudited historical reportable segment data for each quarter of 2011 and the first two quarters of 2012, to reflect the change in reportable segments. The information contained in this Current Report, including Exhibit 99.1, shall not be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

This information is provided as supplemental financial information that may be of interest to the Company's shareholders.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits: 99.1 Sales and Gross Profit by Reportable Segment for Interim Periods in 2011 and 2012 (Unaudited)

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