Exhibit 99.1 Alto Ingredients, Inc. Reports First Quarter 2026 Results Q1 2026 Gross Profit of $9.2 Million Increased $11.0 Million Q1 2026 Net Income of $4.0 Million, or $0.05 per Share, Improved $16.0 Million Q1 2026 Adjusted EBITDA of $4.7 Million Improved $9.1 Million Compared to Q1 2025 Pekin, Ill., May 6, 2026 – Alto Ingredients, Inc. (NASDAQ: ALTO), a producer and distributor of renewable fuels, essential ingredients and specialty alcohols, reported its financial results for the quarter ended March 3 ...