 CLAYTON, Mo., May 10, 2021 GLOBE NEWSWIRE -- FutureFuel Corp. NYSE: FF FutureFuel, a manufacturer of custom and performance chemicals and biofuels, today announced that it had declared a special cash dividend of 2.50 per share on its common stock, with a record date of May 21, 2021 and a payment date of June 4, 2021. 