A. Gregory Lang

Insider Trading: Sales

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
NG	$4.10	722	$2,960.20	1,317,714	2017-11-09	Filing
NG	$4.06	2,100	$8,526.00	1,302,506	2017-10-31	Filing
NG	$4.07	3,975	$16,178.25	1,304,606	2017-10-31	Filing
NG	$4.10	6,783	$27,810.30	1,291,772	2017-10-26	Filing
NG	$4.17	2,620	$10,925.40	1,281,746	2017-10-16	Filing
NG	$4.16	600	$2,496.00	1,284,366	2017-10-16	Filing
NG	$4.58	319,520	$1,462,027.66	1,402,173	2016-12-02	Filing
NCQ	$0.41	73,314	$30,058.74	33,896	2015-07-17	Filing