Charles Schwab Corp.'s co-chief executives, Charles R. Schwab and David S. Pottruck, sold more than 2 million shares of the company's stock, worth nearly $80 million, in the past week.

The Washington Service, which tracks such sales, said Wednesday that Mr. Schwab -- the founder and chairman of the biggest Internet brokerage, as well as its biggest shareholder -- sold 1.5 million shares, including some held jointly with his wife and others held in trust, in four transactions Friday and Monday.

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