Aptose Biosciences Inc.

Dr. Rafael  Bejar M.D., Ph.D.

Senior Vice President & Chief Medical Officer

Dr. William G. Rice Ph.D.

Chairman, President & Chief Executive Officer

Mr. Fletcher  Payne

Senior Vice President, Chief Financial Officer, Chief Business Officer & Secretary

Dr. Marc  Wiles Ph.D.

Senior Vice President of Regulatory Affairs

Aptose Biosciences Inc., a clinical-stage biotechnology company, discovers and develops personalized therapies addressing unmet medical needs in oncology primarily in the United States. Its clinical programs include APTO-253, which is in Phase 1a/b clinical trial for the treatment of patients with relapsed or refractory blood cancers, including acute myeloid leukemia (AML) and high-risk myelodysplastic syndrome (HR MDS); and HM43239 that is in Phase 1/2 clinical trial to treat patients with relapsed or refractory AML. The company also develops luxeptinib, which is in Phase 1a/b clinical trial for treating patients with relapsed or refractory B-cell malignancies, including chronic lymphocytic leukemia, small lymphocytic lymphoma, and various non-Hodgkin's lymphomas, as well as AML and HR MDS; and APL-581, a dual bromodomain and extra-terminal domain motif protein and kinase inhibitor program. It has agreements with CrystalGenomics, Inc. and OHM Oncology. The company was formerly known as Lorus Therapeutics Inc. and changed its name to Aptose Biosciences Inc. in August 2014. Aptose Biosciences Inc. was incorporated in 1986 and is headquartered in Toronto, Canada.

SAN DIEGO and TORONTO, Dec. 19, 2024 (GLOBE NEWSWIRE) -- Aptose Biosciences Inc. (“Aptose” or the “Company”) (NASDAQ: APTO, TSX: APS), a clinical-stage precision oncology company developing highly differentiated targeted agents to treat hematologic malignancies, today announced that the Nasdaq Hearings Panel (“Panel”) has granted the Company's request for an extension to evidence compliance with all applicable criteria for continued listing on The Nasdaq Stock Market. On or before March 31, 2025, the Company will be required to demonstrate compliance with NASDAQ Listing Rule 5550(b)(1) requiring the Company to have a minimum of $2.5 million in shareholders' equity (the “Equity Rule”) and NASDAQ Listing Rule 5550(a)(2) requiring the Company to have a minimum bid price of $1.00 (the “Minimum Bid Price Rule”).

Aptose Announces Positive Decision by Nasdaq Hearings Panel

Aptose Announces Publication of Preclinical Data in AACR Journal Demonstrating Tuspetinib's Unique Mechanism of Action and Synthetic Lethality on AML Cells

Aptose Announces Publication of Preclinical Data in AACR Journal Demonstrating Tuspetinib's Unique Mechanism of Action and Synthetic Lethality on AML Cells When Combined with Venetoclax

TUS+VEN+AZA Triplet Frontline Therapy in Newly Diagnosed AML Patients Now Enrolling at U.S. Sites TUS and TUS+VEN Broadly Active Across AML Populations, with Favorable Safety TUS-based therapies are active in FLT3 wildtype, representing ~70% of AML patients TUS Targets VEN Resistance Mechanisms, Enabling TUS+VEN to Achieve Responses in Difficult-to-treat Prior-VEN Failure AML SAN DIEGO and TORONTO, Dec. 09, 2024 (GLOBE NEWSWIRE) -- Aptose Biosciences Inc. (“Aptose” or the “Company”) (NASDAQ: APTO, TSX: APS), a clinical-stage precision oncology company developing highly differentiated targeted agents to treat hematologic malignancies, today featured a wealth of clinical data for Aptose's lead compound tuspetinib (TUS) in a poster presentation at the 66th American Society of Hematology (ASH) Annual Meeting in San Diego. Poster title: “Phase 1 Safety and Efficacy of Tuspetinib Plus Venetoclax Combination Therapy in Study Participants with Relapsed or Refractory Acute Myeloid Leukemia (AML) Support Exploration of Triplet Combination Therapy of Tuspetinib Plus Venetoclax and Azacitidine for Newly Diagnosed AML” Key Findings and Messages: TUS+VEN+AZA triplet trial is proceeding in newly diagnosed AML patients TUS+VEN retains activity in the difficult-to-treat prior-VEN AML population TUS+VEN is active in FLT3 wildtype, representing ~70% of AML patients TUS+VEN is well tolerated and can be safely co-administered TUS+VEN is active across broad populations of R/R AML Combination of TUS with VEN may avoid VEN resistance TUS+VEN+AZA triplet may establish a more effective, mutation agnostic standard of care for chemotherapy ineligible AML patients Tuspetinib (TUS), being developed by Aptose and originally created by Hanmi Pharmaceutical Co., is being advanced as the TUS+VEN+AZA triplet (tuspetinib+venetoclax+azacitidine) for frontline therapy of newly diagnosed AML patients ineligible for intensive chemotherapy.

Aptose Clinical Data Featured in Poster Presentation at the 2024 ASH Annual Meeting Support Tuspetinib Triple Drug Therapy for Newly Diagnosed AML

Aptose's AML drug tuspetinib selected for NCI's prestigious clinical research program for ability to target broad spectrum of AML and MDS populations

Aptose Signs CRADA with NCI to Develop Tuspetinib for AML and MDS in Newly Launched MyeloMATCH Precision Medicine Trials

SAN DIEGO and TORONTO, Nov. 25, 2024 (GLOBE NEWSWIRE) -- Aptose Biosciences Inc. (“Aptose” or the “Company”) (NASDAQ: APTO, TSX: APS), a clinical-stage precision oncology company developing highly differentiated oral targeted agents to treat hematologic malignancies, today announced the closing of its previously announced "reasonable best efforts" public offering with participation from the CEO and existing and new healthcare focused investors for the purchase and sale of 40,000,000 common shares at a price of $0.20 per share and warrants to purchase up to 20,000,000 common shares (the “Offering”). The warrants have an exercise price of $0.25 per share, are exercisable immediately and will expire five years from the issuance date.

Aptose Biosciences Inc.APTO

Aptose Biosciences Inc.
APTO