Joint Filer Information

 

Name:

DRW Investments, LLC, DRW Commodities, LLC and DRW Holdings, LLC

   
Address:

540 W. Madison St. Suite 2500

Chicago, IL 60661

   
Designated Filer: Donald R. Wilson, Jr.
   
Issuer and Ticker Symbol:

Aptose Biosciences Inc. [APTO]

   
Date of Event Requiring Statement:  

August 3, 2021

  

The undersigned, DRW Investments, LLC, DRW Commodities, LLC and DRW Holdings, LLC are jointly filing the attached Statement of Changes in Beneficial Ownership on Form 4 with Donald R. Wilson, Jr. with respect to the beneficial ownership of securities of Aptose Biosiences Inc.

 

Signatures:

 

DRW INVESTMENTS, LLC

 

By: /s/ Jeffrey Levoff

       Jeffrey Levoff, Authorized Signatory

 

 

DRW COMMODITIES, LLC

 

By: /s/ Jeffrey Levoff

       Jeffrey Levoff, Authorized Signatory

 

 

DRW HOLDINGS, LLC

 

By: /s/ Jeffrey Levoff

       Jeffrey Levoff, Authorized Signatory