SAN FRANCISCO, Sept. 18, 2023 (GLOBE NEWSWIRE) -- Titan Pharmaceuticals, Inc. (NASDAQ: TTNP) ("Titan" or the "Company") announced today that it has entered into a definitive securities purchase agreement (the “Purchase Agreement”) with The Sire Group Ltd. (“Sire Group”) for the sale of the Company’s newly designated Series AA Convertible Preferred Stock (the “Preferred Stock”).