R David Hansen

Insider Trading: Sales
Company Symbol Price Amount Relationship Remaining Holdings Date Form 4
WLK $47.32 200 Officer 34,052 2011-02-28 Filing
WLK $47.31 1,000 Officer 34,252 2011-02-28 Filing
WLK $47.30 1,423 Officer 35,252 2011-02-28 Filing
WLK $36.28 400 Officer 27,234 2010-11-05 Filing
WLK $36.24 100 Officer 27,634 2010-11-05 Filing
WLK $36.23 100 Officer 27,734 2010-11-05 Filing
WLK $36.22 313 Officer 27,834 2010-11-05 Filing
WLK $36.21 700 Officer 28,147 2010-11-05 Filing
WLK $36.21 100 Officer 28,847 2010-11-05 Filing
WLK $36.20 209 Officer 28,947 2010-11-05 Filing
WLK $36.19 100 Officer 29,156 2010-11-05 Filing
WLK $36.19 1,438 Officer 29,256 2010-11-05 Filing
WLK $36.19 100 Officer 30,694 2010-11-05 Filing
WLK $36.18 903 Officer 30,794 2010-11-05 Filing
WLK $36.17 400 Officer 31,697 2010-11-05 Filing
WLK $36.16 900 Officer 32,097 2010-11-05 Filing
WLK $36.15 1,158 Officer 32,997 2010-11-05 Filing
WLK $36.14 800 Officer 34,155 2010-11-05 Filing
WLK $36.13 100 Officer 34,955 2010-11-05 Filing
WLK $36.12 500 Officer 35,055 2010-11-05 Filing