Company: MEMC Electronic Materials, Inc.

Shares of MEMC Electronic Materials Inc. lost about a fifth of their value Thursday, a day after the maker of solar-power equipment announced that it had replaced its chief financial officer.

Solar power equipment maker MEMC Electronic Materials Inc. said Wednesday that it appointed a new CFO to replace Mark Murphy, who resigned to take a position at Praxair Inc.

Shares of solar power equipment maker MEMC Electronic Materials Inc. plunged 25 percent to their lowest level in more than a decade Thursday, a day after the company said it lost $92 million in the first quarter on falling sales.

(Reuters) - Shares of silicon wafer maker MEMC Electronic Materials Inc <WFR.N> fell 10 percent to their lowest in more than five years after the company posted a bigger-than-expected quarterly loss weak demand for its solar products.