Albert Chao

Insider Trading: Sales
Company Symbol Price Amount Relationship Remaining Holdings Date Form 4
WLK $72.67 200 Large Shareholder, Officer, Director 154,180 2012-12-06 Filing
WLK $72.66 800 Large Shareholder, Officer, Director 154,380 2012-12-06 Filing
WLK $72.64 100 Large Shareholder, Officer, Director 155,180 2012-12-06 Filing
WLK $72.61 302 Large Shareholder, Officer, Director 155,280 2012-12-06 Filing
WLK $72.60 3,098 Large Shareholder, Officer, Director 155,582 2012-12-06 Filing
WLK $72.56 101 Large Shareholder, Officer, Director 158,680 2012-12-06 Filing
WLK $72.55 129 Large Shareholder, Officer, Director 158,781 2012-12-06 Filing
WLK $72.50 25,392 Large Shareholder, Officer, Director 158,910 2012-12-06 Filing
WLK $75.92 200 Large Shareholder, Officer, Director 184,302 2012-11-26 Filing
WLK $75.89 100 Large Shareholder, Officer, Director 184,502 2012-11-26 Filing
WLK $75.88 300 Large Shareholder, Officer, Director 184,602 2012-11-26 Filing
WLK $75.87 4,314 Large Shareholder, Officer, Director 184,902 2012-11-26 Filing
WLK $75.83 100 Large Shareholder, Officer, Director 189,216 2012-11-26 Filing
WLK $75.80 30 Large Shareholder, Officer, Director 189,316 2012-11-26 Filing
WLK $75.79 400 Large Shareholder, Officer, Director 189,346 2012-11-26 Filing
WLK $75.73 300 Large Shareholder, Officer, Director 189,746 2012-11-26 Filing
WLK $75.72 100 Large Shareholder, Officer, Director 190,046 2012-11-26 Filing
WLK $75.66 210 Large Shareholder, Officer, Director 190,146 2012-11-26 Filing
WLK $75.66 100 Large Shareholder, Officer, Director 190,356 2012-11-26 Filing
WLK $75.63 1,160 Large Shareholder, Officer, Director 190,456 2012-11-26 Filing