EXHIBIT 99.1 Aptose Reports Results for the First Quarter 2024 TUS+VEN+HMA Triplet Protocol in 1L Therapy for Newly Diagnosed AML was Submitted to the FDA During Q1 and is Now Being Activated at Clinical Sites TUS+VEN+HMA Triplet 1L Therapy for Newly Diagnosed AML is Supported by Extensive TUS and TUS+VEN Data from Completed Trials with R/R AML Conference Call and Webcast at 5:00 pm ET Today SAN DIEGO and TORONTO, May 14, 2024 (GLOBE NEWSWIRE) -- Aptose Biosciences Inc. (“Aptose” or the “Company”) (NASDAQ: ...