Ralsky Stuart L (0001472491)

Mailing Address ORION ENERGY SYSTEMS, INC. 2210 WOODLAND DRIVE MANITOWOC WI 54220 Ownership Reports for Issuers: (Click on issuer name to see other owners for the issuer, or CIK for issuer filings.) Issuer Filings Transaction Date Type of Owner ORION ENERGY SYSTEMS, INC. 0001409375 2011-05-23 officer: Senior VP - Human Resources

Items 1 - 12

The information presented below contains only portions of the information presented in the referenced filing or filings.
You should consult the original filing for complete information. Hyperlinks to the forms are provided for your convenience.

Acquistion or Disposition	Transaction Date	Deemed Execution Date	Issuer	Form	Transaction Type	Direct or Indirect Ownership	Number of Securities Transacted	Number of Securities Owned	Line Number	Issuer CIK	Security Name
A	2011-05-23		ORION ENERGY SYSTEMS, INC.	4	A-Award	--D	12580.0000	12580.0000	2	0001409375	Stock Options (right to buy)
A	2010-05-18		ORION ENERGY SYSTEMS, INC.	4	A-Award	--D	8263.0000	8263.0000	2	0001409375	Stock Options (right to buy)
A	2009-11-04		ORION ENERGY SYSTEMS, INC.	4	P-Purchase	--D	2500.0000	3800.0000	1	0001409375	Common Stock
A	2009-10-01		ORION ENERGY SYSTEMS, INC.	4	A-Award	--D	50000.0000	50000.0000	2	0001409375	Stock Options (right to buy)
-	-		ORION ENERGY SYSTEMS, INC.	3	-	--D		1300.0000	1	0001409375	Common Stock
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		1300.0000	1	0001409375	Common Stock
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		50000.0000	2	0001409375	Stock Options (right to buy)
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		3800.0000	1	0001409375	Common Stock
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		50000.0000	3	0001409375	Stock Options (right to buy)
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		3800.0000	1	0001409375	Common Stock
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		50000.0000	3	0001409375	Stock Options (right to buy)
-	-		ORION ENERGY SYSTEMS, INC.	4	-	--D		8263.0000	4	0001409375	Stock Options (right to buy)

http://www.sec.gov/cgi-bin/own-disp

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