Aptose To Release Second Quarter Ended June 30, 2019 Financial Results and Hold Conference Call on August 6, 2019

SAN DIEGO and TORONTO, July 23, 2019 (GLOBE NEWSWIRE) — Aptose Biosciences Inc. (NASDAQ: APTO; TSX: APS), a clinical-stage biotechnology company developing first-in-class agents that target the dysregulated processes and signaling pathways of cancer cells and address unmet medical needs of patients with life-threatening hematologic cancers, will release its financial results for the second quarter ended June 30, 2019 on Tuesday, August 6, 2019 after the close of the market.?