Form: EFFECT

Notice of Effectiveness

August 23, 2012

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Notice of Effectiveness

Effectiveness Date: August 23, 2012 2:00 P.M.
Form: S-3
CIK: 0000808326
Company Name: EMCORE CORP
File Number: 333-183256