Aptose Biosciences upgraded to OTCQB market; begins trading under APTOF

Aptose Biosciences Inc.

Company upgraded to OTCQB Market, effective July 1, 2025.
New ticker symbol APTOF on OTCQB.
Continues trading on Toronto Stock Exchange under symbol APS.
OTCQB requires current reporting and annual management certification.

item 7.01item 9.01

Source: SEC EDGAR

accession 0001171843-25-004249

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