Form: EFFECT

Notice of Effectiveness

May 19, 2009

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

Notice of Effectiveness

Effectiveness Date: May 19, 2009
Accession Number: 0000808326-09-000028
Submission Type: POS AM
CIK: 0000808326
Company Name: EMCORE CORP
File Number: 333-149860