Sentence:  These plans , like du Pont 's contained provisions for passing the vote on du Pont 's General Motors <WSD>shares</WSD> on to the ultimate stockholders of du Pont , Christiana , and Delaware , except that officers and directors of the three companies , their spouses , and other people living in their households , as well as other specified persons , were to be totally disenfranchised . 
Meaning of the word marked with <WSD> tags:  any of the equal portions into which the capital stock of a corporation is divided and ownership of which is evidenced by a stock certificate