GlobeNewswire Inc | Oct 27, 2020 04:01PM EDT

October 27, 2020

SAN DIEGO and TORONTO, Oct. 27, 2020 (GLOBE NEWSWIRE) -- Aptose Biosciences Inc. (Nasdaq: APTO; TSX: APS), a clinical-stage company developing highly differentiated therapeutics that target the underlying mechanisms of cancer, will release its financial results for the quarter ended September 30, 2020 on Tuesday, November 10, 2020, after the close of the market.

Conference Call & Webcast:

Date: Tuesday, November 10, 2020Time: 5:00 PM ETDial In - Toll-Free: 1 844-882-7834Dial In - International: 1 574-990-9707Passcode: 5539639Webcast: LINK

Replay available throughNovember 24, 2020:

Dial In - Toll-Free: 1 855-859-2056Dial In - International: 1 404-537-3406Replay Passcode: 5539639

The live conference call can also be accessed through a link on the Investor Relations section of Aptoses website at https://www.aptose.com/investors/news-events/ir-calendar. An archived version of the webcast along with a transcript will be available on the companys website for 30 days.

The press release, the financial statements and the managements discussion and analysis for the quarter ended September 30, 2020, will be available on SEDAR at www.sedar.comand EDGAR at www.sec.gov/edgar.shtml.

About Aptose

Aptose Biosciences is a clinical-stage biotechnology company committed to developing personalized therapies addressing unmet medical needs in oncology, with an initial focus on hematology. The Company's small molecule cancer therapeutics pipeline includes products designed to provide single agent efficacy and to enhance the efficacy of other anti-cancer therapies and regimens without overlapping toxicities. The Company has two clinical-stage investigational products for hematologic malignancies: CG-806, an oral, first-in-class mutation-agnostic FLT3/BTK kinase inhibitor, is in a Phase 1 trial in patients with relapsed or refractory B cell malignancies, including chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL) and non-Hodgkin lymphoma (NHL), who have failed or are intolerant to standard therapies, and is in a separate Phase 1 trial in patients with relapsed or refractory acute myeloid leukemia (AML); APTO-253, the only clinical stage agent that directly targets the MYC oncogene and suppresses its expression, is in a Phase 1b clinical trial for the treatment of patients with relapsed or refractory AML or high risk myelodysplastic syndrome (MDS).

For further information, please contact:

Aptose Biosciences Inc. LifeSci Advisors, LLCGreg Chow Dan Ferry, Managing DirectorExecutive Vice President, CFO 617-535-7746650-718-5028 Daniel@LifeSciAdvisors.comgchow@aptose.com SMP Communications Susan Pietropaolo 201-923-2049 susan@smpcommunications.com