Sec Form 4 Filing - Potts Michael J @ ORION ENERGY SYSTEMS, INC. - 2015-02-20

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Potts Michael J 2. Issuer Name and Ticker or Trading Symbol ORION ENERGY SYSTEMS, INC. [ OESX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and COO (Last) (First) (Middle) 2210 WOODLAND DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 02/20/2015 (Street) MANITOWOC, WI54220 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 02/20/2015 P( 1 ) 4,286 ( 1 ) A $ 3.5 524,951 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Options (right to buy) $ 2.2 ( 2 ) 12/20/2016 Common Stock 45,000 45,000 D Stock Options (right to buy) $ 5.35 ( 3 ) 08/08/2018 Common Stock 21,452 21,452 D Stock Options (right to buy) $ 3.78 ( 4 ) 05/19/2019 Common Stock 11,759 11,759 D Stock Options (right to buy) $ 3.46 ( 5 ) 05/18/2020 Common Stock 11,620 11,620 D Stock Options (right to buy) $ 2 ( 6 ) 06/18/2022 Common Stock 50,000 50,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Potts Michael J 2210 WOODLAND DRIVE MANITOWOC, WI54220 X President and COO Signatures /s/ Steven R. Barth, Attorney-in-Fact for Michael J. Potts 02/24/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These shares were purchased by the Reporting Person in an underwritten public offering at the public offering price. ( 2 )Grant to reporting person of option to buy shares under the 2004 Equity Incentive Plan. This option, granted December 20, 2006, vests and becomes exercisable in 20% increments on December 20, 2007, 2008, 2009, 2010 and 2011, respectively. ( 3 )Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted August 8, 2008, vests and becomes exercisable in 20% increments on August 8, 2009, 2010, 2011, 2012 and 2013, respectively. ( 4 )Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted May 19, 2009, vests and becomes exercisable in 20% increments on May 19, 2010, 2011, 2012, 2013 and 2014, respectively. ( 5 )Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted May 18, 2010, vests and becomes exercisable in 20% increments on May 18, 2011, 2012, 2013, 2014 and 2015, respectively. ( 6 )Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted June 18, 2012, vests and becomes exercisable in 20% increments on June 18, 2013, 2014, 2015, 2016 and 2017, respectively.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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