Albert Chao

Insider Trading: Sales
Company Symbol Price Amount Relationship Remaining Holdings Date Form 4
WLK $76.20 3,026 Large Shareholder, Officer, Director 146,030 2012-11-23 Filing
WLK $76.19 845 Large Shareholder, Officer, Director 149,056 2012-11-23 Filing
WLK $76.15 100 Large Shareholder, Officer, Director 149,901 2012-11-23 Filing
WLK $76.14 100 Large Shareholder, Officer, Director 150,001 2012-11-23 Filing
WLK $76.11 74 Large Shareholder, Officer, Director 150,101 2012-11-23 Filing
WLK $76.10 700 Large Shareholder, Officer, Director 150,175 2012-11-23 Filing
WLK $76.08 600 Large Shareholder, Officer, Director 150,875 2012-11-23 Filing
WLK $76.05 100 Large Shareholder, Officer, Director 151,475 2012-11-23 Filing
WLK $76.04 51 Large Shareholder, Officer, Director 151,575 2012-11-23 Filing
WLK $76.03 100 Large Shareholder, Officer, Director 151,626 2012-11-23 Filing
WLK $76.02 100 Large Shareholder, Officer, Director 151,726 2012-11-23 Filing
WLK $76.01 4,299 Large Shareholder, Officer, Director 151,826 2012-11-23 Filing
WLK $76.00 3,750 Large Shareholder, Officer, Director 156,125 2012-11-23 Filing