X0609 4 2026-06-23 0001409375 ORION ENERGY SYSTEMS, INC. OESX 0001498395 Washlow Sally A. false 2210 WOODLAND DRIVE MANITOWOC WI 54220 true true false false Chief Executive Officer false Common Stock 2026-06-23 4 P false 955 9.50 A 47479 D Common Stock 2026-06-24 4 P false 1780 9.47 A 49259 D Common Stock 100 I By Spouse Stock Options (right to buy) 6 2035-07-17 Common Stock 50000 50000 D The price in Column 4 is a weighted average price. The prices actually received ranged from $9.44 to $9.50. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported in this Form 4 utilizing an average weighted price. This option becomes exercisable as follows: (i) the portion of the stock option exercisable for one-half of the option shares (25,000 shares) will vest in three equal increments on each of the first three anniversaries of the grant date, provided Ms. Washlow remains in Orion Energy Systems, Inc.'s employment until the applicable vesting date, and (ii) the second one-half of the grant (25,000 shares) will vest, if at all, in three equal increments if the average closing sale price of Orion Energy Systems, Inc.'s common stock, for five consecutive trading days during the three calendar years immediately following the date of the grant, equals or exceeds $30.00, $40.00 and $50.00, respectively, provided Ms. Washlow remains in Orion Energy Systems, Inc.'s employment until the applicable vesting date. /s/ Steven R. Barth, Attorney-in-Fact for Sally A. Washlow 2026-06-25