E William Greehey

Insider Trading: Purchases

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
NSH	$27.63	12,600	$348,103.98	7,820,977	2012-12-11	Filing
NSH	$27.63	12,600	$348,103.98	7,820,977	2012-12-11	Filing
NSH	$27.57	20,600	$567,845.18	7,808,377	2012-12-10	Filing
NSH	$27.03	28,600	$773,063.72	7,787,777	2012-12-07	Filing
NSH	$26.14	33,155	$866,747.96	7,759,177	2012-11-14	Filing
NSH	$26.03	128,523	$3,345,492.25	7,726,022	2012-11-13	Filing
NSH	$25.18	44,322	$1,116,240.71	7,597,499	2012-11-12	Filing
NS	$48.94	490,000	$23,980,600.00	2,086,687	2012-09-10	Filing
NS	$53.45	187,000	$9,995,150.00	1,594,975	2011-12-09	Filing
NSH	$32.75	15,250	$499,495.45	7,550,066	2011-09-22	Filing
NSH	$32.53	12,200	$396,907.48	7,534,816	2011-09-19	Filing
NSH	$32.46	6,200	$201,279.28	7,522,616	2011-09-16	Filing
NSH	$32.91	11,800	$388,393.46	7,516,416	2011-09-15	Filing
NSH	$32.96	92,879	$3,061,728.37	7,504,616	2011-08-22	Filing
NSH	$32.96	68,260	$2,249,685.78	7,411,737	2011-08-19	Filing
NSH	$32.99	58,622	$1,934,191.85	7,343,477	2011-08-18	Filing
NSH	$33.00	2,269	$74,877.00	7,284,855	2011-08-10	Filing
NS	$54.78	12,030	$659,055.13	1,407,975	2011-08-09	Filing
NSH	$32.91	32,520	$1,070,259.22	7,282,586	2011-08-09	Filing
NS	$62.98	3,200	$201,534.40	1,395,945	2011-06-06	Filing