X0306 4 2014-05-15 0 0001409375 ORION ENERGY SYSTEMS, INC. OESX 0001522618 Jacobson Tryg C 529 ONTARIO AVENUE SHEBOYGAN WI 53081 1 0 0 0 Common Stock 2014-05-15 4 A 0 10715 0 A 52311 D Stock Options (right to buy) 3.12 2012-08-09 2021-08-09 Common Stock 22045 22045 D Stock Options (right to buy) 2.03 2013-06-12 2022-06-12 Common Stock 26646 26646 D Stock Options (right to buy) 2.41 2013-12-31 2023-05-28 Common Stock 36568 36568 D Restricted stock granted to the reporting person under the 2004 Stock and Incentive Awards Plan. The restricted stock vests and becomes exercisable with respect to 1/3 of the restricted stock on each of December 31, 2014, 2015 and 2016, respectively. Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted August 9, 2011, vests and becomes exercisable in three equal installments on August 9, 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 June 12, 2012, vests and becomes exercisable in three equal installments on June 12, 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 28, 2013, vests and becomes exercisable in three equal installments on December 31, 2013, 2014 and 2015, respectively. /s/ Steven R. Barth, Attorney-in-Fact for Tryg C. Jacobson 2014-05-19