X0306 4 2015-02-20 0 0001409375 ORION ENERGY SYSTEMS, INC. OESX 0001440459 Jensen Scott R 2210 WOODLAND DRIVE MANITOWOC WI 54220 0 1 0 0 Chief Financial Officer Common Stock 2015-02-20 4 P 0 1000 3.50 A 90564 D Stock Options (right to buy) 2.20 2017-03-01 Common Stock 25000 25000 D Stock Options (right to buy) 5.35 2018-08-08 Common Stock 16502 16502 D Stock Options (right to buy) 3.78 2019-05-19 Common Stock 11759 11759 D Stock Options (right to buy) 5.44 2020-02-05 Common Stock 100000 100000 D Stock Options (right to buy) 3.46 2020-05-18 Common Stock 10329 10329 D Stock Options (right to buy) 2 2022-06-18 Common Stock 25000 25000 D These shares were purchased by the Reporting Person in an underwritten public offering at the public offering price. Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted March 1, 2007, vests and becomes exercisable in 20% increments on March 1, 2008, 2009, 2010, 2011 and 2012, respectively. 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. 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. Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted February 5, 2010, vests and becomes exercisable in 20% increments on February 5, 2011, 2012, 2013, 2014 and 2015, respectively. 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. 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. /s/ Steven R. Barth, Attorney-in-Fact for Scott R. Jensen 2015-02-24