Investor Relations

Alliance Advisors Investor Relations
T: 415-433-3777
investorrelations@altoingredients.com

Alto Ingredients, Inc.
T: 916-403-2755
investorrelations@altoingredients.com

Transfer Agent

American Stock Transfer & Trust Co.
6201 15th Avenue
Brooklyn, NY 11219
T: 800-937-5449
help@astfinancial.com

Auditor

RSM US LLP
310 S Broadway
Suite 300
Rochester, MN 55904
T: 507-288-6476

Legal Counsel

Troutman Pepper Hamilton Sanders LLP
5 Park Plaza
Suite 1400
Irvine, CA 92614