R David Hansen

Insider Trading: Sales
Company Symbol Price Amount Relationship Remaining Holdings Date Form 4
WLK $67.02 200 Officer 39,743 2012-08-06 Filing
WLK $67.01 400 Officer 39,943 2012-08-06 Filing
WLK $48.00 12,627 Officer 27,679 2011-03-02 Filing
WLK $48.08 200 Officer 27,679 2011-02-28 Filing
WLK $47.58 100 Officer 27,879 2011-02-28 Filing
WLK $47.57 100 Officer 28,079 2011-02-28 Filing
WLK $47.56 100 Officer 28,179 2011-02-28 Filing
WLK $47.55 100 Officer 28,279 2011-02-28 Filing
WLK $47.53 500 Officer 28,379 2011-02-28 Filing
WLK $47.52 600 Officer 28,879 2011-02-28 Filing
WLK $47.49 1,600 Officer 29,479 2011-02-28 Filing
WLK $47.48 800 Officer 31,079 2011-02-28 Filing
WLK $47.47 273 Officer 31,879 2011-02-28 Filing
WLK $47.46 400 Officer 32,152 2011-02-28 Filing
WLK $47.39 100 Officer 32,552 2011-02-28 Filing
WLK $47.38 300 Officer 32,652 2011-02-28 Filing
WLK $47.37 600 Officer 32,952 2011-02-28 Filing
WLK $47.36 300 Officer 33,552 2011-02-28 Filing
WLK $47.34 100 Officer 33,852 2011-02-28 Filing
WLK $47.33 100 Officer 33,952 2011-02-28 Filing