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

Equiniti Trust Company, LLC
55 Challenger Road 2nd Floor
Ridgefield Park, NJ 07660
T: (800) 937-5449
HelpAST@equiniti.com
https://equiniti.com/us/ast-access

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