 SACRAMENTO, Calif., May 26, 2021 GLOBE NEWSWIRE -- Alto Ingredients, Inc. NASDAQ: ALTO, a leading producer of specialty alcohols and essential ingredients, today announced that Chief Executive Officer, Mike Kandris, and Chief Financial Officer, Bryon McGregor, will participate in the 18th Annual Craig-Hallum Institutional Investor Conference on Wednesday, June 2, 2021. 