On March 6, 2018 Aptose Biosciences Inc. ("Aptose" or the "Company") (NASDAQ:APTO) (TSX:APS), a clinical-stage company developing highly differentiated therapeutics that target the underlying mechanisms of cancer, reported that William G. Rice, Ph.D., Chairman, President and Chief Executive Officer, and Gregory K. Chow, Senior Vice President and Chief Financial Officer, will participate at the upcoming conferences (Press release, Aptose Biosciences, MAR 6, 2018, View Source;p=RssLanding&cat=news&id=2336407 [SID1234524433]):

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Cowen and Company 38th Annual Healthcare Conference
Time: 12:00 p.m. EDT
Date: Monday, March 12, 2018
Location: The Boston Marriott Copley Place, Boston, MA
Live webcast: http://wsw.com/webcast/cowen46/apto/

30th Annual ROTH Conference
Time: 9:30 a.m. PDT
Date: Tuesday, March 13, 2018
Location: The Ritz Carlton, Laguna Niguel, CA
Live webcast: View Source

2018 B. Riley & Co. China Healthcare Investment Partnering Symposium
Time: 11:30 a.m. CST (China Standard Time)
Date: Friday, March 16, 2018
Location: The Intercontinental Hotel, Hangzhou, People’s Republic of China
Live webcast: View Source

Oppenheimer 28th Annual Healthcare Conference
Time: 8:00 a.m. EDT
Date: Wednesday, March 21, 2018
Location: The Westin Grand Central, New York, NY
Live webcast: https://veracast.com/webcasts/opco/healthcare2018/76201109497.cfm

The audio webcasts can also be accessed through the Aptose website at www.aptose.com and will be archived shortly after the live event and available for 90 days.