Salim Shariff was named CIO of the $4.3 billion defined benefit plan at Weyerhaeuser Co., Federal Way, Wash. He will also oversee the company's Canadian defined benefit plan, whose size was not disclosed. The CIO job is new. Mr. Shariff had been an executive director at Morgan Stanley Alternative Investment Partners. The CIO post was created internally to address securities-law concerns and because Weyerhaeuser plans to combine the investment committees that oversee the U.S. and Canadian defined benefit plans, said Bruce Amundson, a Weyerhaeuser spokesman. No investment changes are expected.