C Mark Williamson

Insider Trading: Purchases

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
OESX	$0.88	9,000	$7,946.10	113,805	2018-06-08	Filing
OESX	$4.22	5,000	$21,082.00	35,715	2014-05-16	Filing
OESX	$1.65	10,000	$16,500.00	20,000	2012-11-13	Filing
OESX	$2.21	10,000	$22,058.00	10,000	2010-08-26	Filing