SAN DIEGO and TORONTO, June 30, 2025 (GLOBE NEWSWIRE) -- Aptose Biosciences Inc. ('Aptose' or the 'Company') (TSX: APS; OTC: APTOF), a clinical-stage precision oncology company developing a tuspetinib (TUS) based triple drug frontline therapy to treat patients with newly diagnosed acute myeloid leukemia (AML), announced that it has entered into an Interest Deferral Agreement (the 'Agreement”) with Hanmi Pharmaceutical Co., Ltd. ('Hanmi”), whereby Hanmi has agreed to further defer the interest payment due under the loan facility agreement dated August 27, 2024 (the '2024 Loan Agreement”) between Aptose and Hanmi for the period commencing December 21, 2024 and ending on March 31, 2025 from June 27, 2025 to December 31, 2025 and to defer the interest due under the 2024 Loan Agreement for the period commencing March 31, 2025 and ending on June 30, 2025 to December 31, 2025.