The link has the entire eplanation of sales. The story was too long to post.
Western Refining's Paul Foster sells $13M in shares By Vic Kolenc \ El Paso Times Posted: 04/21/2011 07:00:05 AM MDT
Western Refining chairman and founder Paul Foster has sold almost $13 million worth of shares in the El Paso company this year as part of a personal financial plan he initiated in January to sell more than 3 million of his company shares.
Foster could earn as much as $40 million from other sales of his shares this year if the company's stock remained at Wednesday's price of $18.49 a share.
Six other Western officers and a board member in recent weeks also sold more than $4 million worth of shares. Most of those sales were for the officers to pay income taxes on shares they gained through their employment agreements.
Even after the big stock sell-off, Foster remains Western's largest shareholder.