Insider Trading — QuoTrend

Stienessen Joseph G – Insider Transactions

Ticker	Owner	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Form 4
NPK	Stienessen Joseph G	Director	Mar 18 '15	Buy	59.25	417	24,707	1,382	Mar 18
NPK	Stienessen Joseph G	Director	Mar 19 '14	Buy	81.09	550	44,597	965	Mar 19
NPK	Stienessen Joseph G	Director	Nov 18 '13	Buy	71.66	415	29,740	415	Nov 19
NPK	Stienessen Joseph G	Director	May 14 '13	Sale	77.06	240	18,494	0	May 14
NPK	Stienessen Joseph G	Director	May 15 '12	Buy	68.50	146	10,001	240	May 16
NPK	Stienessen Joseph G	Director	May 17 '11	Buy	106.00	94	9,964	94	May 18