M Susan Cunningham

Insider Trading: Sales
Symbol Price Amount Total Value Remaining Holdings Date Form 4
NBL $95.05 13,300 $1,264,165.00 53,361 2011-11-11 Filing
NBL $88.06 20,000 $1,761,200.00 53,361 2011-10-21 Filing
NBL $95.60 6,000 $573,600.00 53,361 2011-04-20 Filing
NBL $90.00 7,000 $630,000.00 49,529 2011-01-31 Filing
NBL $85.21 7,000 $596,470.00 50,573 2010-12-06 Filing