8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

May 17, 2011

GSI GROUP INC.

(Exact name of registrant as specified in its charter)

New Brunswick, Canada	001-35083	98-0110412
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)
125 Middlesex Turnpike Bedford, Massachusetts		01730
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code (781) 266-5700

N/A

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02. Results of Operations and Financial Condition

As previously disclosed, effective with the first quarter ended April 1, 2011, GSI Group Inc. (the “Company”) has modified its operating and reporting segments into three distinct operating divisions: Laser Products, Precision Motion and Technologies and Semiconductor Systems.

The Company is providing, in Exhibit 99.1 to this Current Report on Form 8-K, unaudited historical reclassified operating segment data for each quarter of fiscal years 2010 and 2009, to reflect the change in reportable segments. Exhibit 99.1 is furnished herewith and is incorporated herein by reference. 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.

The historical financial information presented under the new organization structure does not in any way restate or revise the financial position, results of operations or cash flows of the Company as set forth in any previously reported consolidated balance sheet, consolidated statement of income or consolidated statement of cash flows of the Company. 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 Fiscal Years 2010 and 2009 (Unaudited)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	GSI Group Inc.
	(Registrant)
Date: May 17, 2011	By:	/s/ Robert Buckley
		Robert Buckley
		Chief Financial Officer

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EX-99.1

Exhibit 99.1

GSI GROUP INC.

Sales and Gross Profit by Reportable Segment

(UNAUDITED)

The following table sets forth the external sales, gross profit and gross profit percentage for each of the updated reportable segments for the periods noted (dollars in thousands):

	Q1			Q4			Q3			Q2			Q1
	Three Months Ended
	April 1, 2011			December 31, 2010			October 1, 2010			July 2, 2010			April 2, 2010
Sales:
Laser Products	$	30,696		$	32,972		$	29,093		$	30,850		$	28,444
Precision Motion and Technologies		50,628			47,285			50,505			43,583			39,500
Semiconductor Systems		10,534			11,362			11,947			11,304			46,671
Total	$	91,858		$	91,619		$	91,545		$	85,737		$	114,615
Gross profit:
Laser Products	$	10,795		$	12,631		$	11,744		$	11,423		$	10,936
Precision Motion and Technologies		23,947			21,385			23,726			22,649			20,592
Semiconductor Systems		5,152			4,347			5,474			3,984			17,510
Total	$	39,894		$	38,363		$	40,944		$	38,056		$	49,038
Gross profit percentages:
Laser Products		35.2	%		38.3	%		40.4	%		37.0	%		38.4	%
Precision Motion and Technologies		47.3	%		45.2	%		47.0	%		52.0	%		52.1	%
Semiconductor Systems		48.9	%		38.3	%		45.8	%		35.2	%		37.5	%
Total		43.4	%		41.9	%		44.7	%		44.4	%		42.8	%

	Q4			Q3			Q2			Q1
	Three Months Ended
	December 31, 2009			October 2, 2009			July 3, 2009			April 3, 2009
Sales:
Laser Products	$	25,719		$	23,921		$	21,656		$	23,270
Precision Motion and Technologies		33,838			26,018			23,492			26,804
Semiconductor Systems		12,952			5,128			17,756			13,834
Total	$	72,509		$	55,067		$	62,904		$	63,908
Gross profit:
Laser Products	$	10,243		$	8,997		$	7,336		$	8,035
Precision Motion and Technologies		14,950			12,159			9,479			11,199
Semiconductor Systems		3,002			1,143			7,638			4,365
Total	$	28,195		$	22,299		$	24,453		$	23,599
Gross profit percentages:
Laser Products		39.8	%		37.6	%		33.9	%		34.5	%
Precision Motion and Technologies		44.2	%		46.7	%		40.3	%		41.8	%
Semiconductor Systems		23.2	%		22.3	%		43.0	%		31.6	%
Total		38.9	%		40.5	%		38.9	%		36.9	%

Description of Updated Reportable Segments

The Company’s updated reportable segments shown above and their principal activities consist of the following:

Laser Products

The Laser Products segment designs, manufactures, and markets photonics-based solutions, consisting of lasers and laser-based systems, to customers worldwide. The Laser Products segment provides the industrial, scientific, medical, packaging, aerospace and homeland security markets with applications that include cutting, welding, drilling, micro-machining, scientific research, remote sensing, surface marking, and deep engraving of metal and plastic parts. Many of the products are customized for the customer. The Laser Products segment sells these products both directly utilizing a highly technical sales force and indirectly through resellers and distributors.

Precision Motion and Technologies

The Precision Motion and Technologies segment designs, manufactures and markets air bearing spindles, encoders, precision motion devices, thermal printers, and light and color measurement systems to customers worldwide. The majority of these products are based on the segment’s core competencies in precision motion and motion control technologies. The vast majority of the segment’s product offerings are sold to original equipment manufacturers (“OEM’s”). These products are used in the electronics, aerospace, materials processing, data storage, imaging and other light industrial markets. The Precision Motion and Technologies segment sells these products both directly utilizing a highly technical sales force and indirectly through resellers and distributors.

Semiconductor Systems

The Semiconductor Systems segment designs, develops and sells production systems that process semiconductor wafers using laser beams and high precision technology. The systems manufactured by the Company’s Semiconductor Systems segment are sold to integrated device manufacturers and wafer processors. The Semiconductor Systems segment’s systems perform laser-based processing on all of the following types of semiconductors: general wafers used for logic or memory purposes, dynamic random access memory (DRAM, “Not And” or NAND) chips and high performance analog chips.