Both shareholder groups approved the merger by a wide margin.

In return, the shareholder group agreed to dismiss all litigation.

Setting the threshold at 50%, as urged by some shareholder groups, would be smarter.

Since a dissident shareholder group took control in 1986 the company has been going through a reorganization.

What needs to happen is that there has to be an easier conversation between the shareholder groups and the board.

Five shareholder groups had filed suit against the board for accepting the first offer.

But in at least two cases, shareholder groups have successfully forced management to trim the size of the awards.

The shareholder group is seeking to increase the size of the board to 28, from 18.

He refused calls for his removal by several large shareholder groups at an annual meeting in May.

Upon taking control, the shareholder group said, it would adopt a plan to increase Tesoro's value.