X0304 4 2011-08-26 0000808326 EMCORE CORP EMKR 0001265677 WEINSWIG MARK C/O EMCORE CORPORATION 10420 RESEARCH ROAD, SE ALBUQUERQUE NM 87123 1 Chief Financial Officer Emcore Common Stock 2011-08-26 4 S 0 9499 1.59 D 59164 D Emcore Common Stock 2927 I 401K Plan The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.57 to $1.59, inclusive. The reporting person undertakes to provide to EMCORE Corporation, any security holder of EMCORE Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. 9,499 shares were acquired under the EMCORE Corporation 2000 Employee Stock Purchase Plan on August 25, 2011 in an exempt transaction under Rule 16b-3(c). Shares attributable to EMCORE Corporation 401(k) account as of June 30, 2011. Alfredo Gomez, attorney-in-fact 2011-08-26