Allegro Biodiesel’s common stock is trades on the Over the Counter Bulletin Board of Exchange under the ticker symbol “ABDS”

General Shareowner Information

Written Requests to:
American Stock Transfer and Trust Co.
59 Maiden Lane
New York, NY 10038
Tel: 800.937.5449
Fax: 718.236.2641
www.amstock.com
Representatives are available Monday to Thursday, 8:00am to 7:00pm, Eastern Standard Time and Friday, 8:00am to 5:00pm Eastern Standard Time.

Stockholders should include the name of the stock, account number or Social Security identification, name and mailing address information in all inquiries.

Investor Relations:

Maili Bergman
6033 West Century Boulevard
Suite 1090
Los Angeles, CA 90045
Tel: 310.670.2093
Fax: 3
info@allegrobio.com