OESX - Orion Energy Systems (OESX) Q4 2021 Earnings Call Transcript June, 02 2021 03:30 AM Orion Energy Systems Inc. Image source: The Motley Fool. Orion Energy Systems (NASDAQ: OESX) Q4 2021 Earnings Call Jun 01, 2021 , 4:30 p.m. ET Operator Continue reading For further details see: Orion Energy Systems (OESX) Q4 2021 Earnings Call Transcript