He stepped down as chief executive officer in 1979 and as chairman in 1982.

He plans to step aside as chairman in April.

Wilson stepped down from all but his position as chairman in 1998, but continued to serve as Chairman of the Board until 2000.

Mr. Li, the stock exchange's best known and most controversial figure, stepped aside as chairman last month after two terms, the maximum.

But soon after the raids, he stepped aside as chairman, citing his struggle with cancer.

Also as part of that settlement, Mr. Rangel was forced to step aside as chairman.

If indicted, Mr. Rostenkowski would be forced to step aside as chairman.

She said it would also be up to the board whether it should reconstitute itself and whether she should step aside as chairman.

The revelation led Mr. McKay to step down from his post as chairman of the powerful Senate budget committee.

He stepped aside as chairman in 1984.