X0306 4 2022-06-10 0 0001409375 ORION ENERGY SYSTEMS, INC. OESX 0001476048 Altschaefl Michael W 2210 WOODLAND DRIVE MANITOWOC WI 54220 1 1 0 0 CEO and Board Chair Common Stock 2022-06-10 4 M 0 26646 2.03 A 861739 D Common Stock 2022-06-10 4 A 0 163417 0 A 1025156 D Stock Options (right to buy) 2.03 2022-06-10 4 M 0 26646 0 D 2013-06-12 2022-06-12 Common Stock 26646 0 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 Orion Energy Systems, Inc. 2016 Omnibus Incentive Plan, as amended. The restricted stock vests and becomes exercisable with respect to 1/3 of the restricted stock on each of June 10, 2023, 2024 and 2025, respectively. Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted June 12, 2012, vested and became 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, vested and became exercisable in three equal installments on December 31, 2013, 2014 and 2015, respectively. /s/ Steven R. Barth, Attorney-in-Fact for Michael W. Altschaefl 2022-06-13