X0306 4 2016-02-12 0 0001409375 ORION ENERGY SYSTEMS, INC. OESX 0001561932 Leslie James D 575 KOKESH FARM ROAD MAPLE PLAIN MN 55359 1 0 0 0 Common Stock 2016-02-12 4 A 0 8333 0 A 84375 D Stock Options (right to buy) 2.41 2013-12-31 2023-05-28 Common Stock 36568 36568 D Shares granted in lieu of cash for quarterly retainer and annual Committee Chairman fees pursuant to Issuer's 2004 Stock and Incentive Awards Plan. Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted May 28, 2013, vested and became exercisable in three equal installments on December 31, 2013, 2014 and 2015, respectively. /s/ Steven R. Barth, Attorney-in-Fact for James D. Leslie 2016-02-12