X0202 4 2005-09-18 0 0000945436 MEMC ELECTRONIC MATERIALS INC WFR 0001339198 KOHN BRADLEY D C/O MEMC ELECTRONIC MATERIALS INC. PO BOX 8 ST PETERS MO 63376 0 1 0 0 Vice President & Gen. Counsel Employee Stock Option (right to buy) 19.88 2005-09-18 4 A 0 200000 A 2015-09-18 Common Stock 200000 200000 D The option to purchase 200,000 shares of common stock was awarded on September 18, 2005 under the MEMC Electronic Materials 2001 Equity Incentive Plan in a transaction exempt under Rule 16b-3. The options are exercisable at an exercise price of $19.88 per share. 100,000 options become exercisable in 25% increments on September 18, 2006, September 18, 2007, September 18, 2008 and September 18, 2009, respectively. The remaining 100,000 options become exercisable on September 18, 2009. /s/ Bradley D. Kohn 2005-09-20