Form 4 Filing for Alto Ingredients, Inc.

Robert R. Olander, Chief Financial Officer of Alto Ingredients, Inc., reported a disposition of 41,072 shares of Common Stock on April 1, 2026. The transaction, coded as "F" (payment of exercise price or tax), occurred at a price of $4.79 per share. Following this transaction, Mr. Olander directly owns 253,086 shares of Common Stock. The shares withheld were to cover tax obligations upon the vesting of restricted stock, as indicated by footnote F1.