Bleichroeder LP - Jun 30, 2025 SCHEDULE 13G/A Report for Aptose Biosciences Inc. Common Shares (APTO)

Filing Manager
Bleichroeder LP
Reporting Manager
Bleichroeder LP
Security
Aptose Biosciences Inc. Common Shares
Symbol
APTO
Shares outstanding
2.59M shares
Disclosed Ownership
41.7K shares
Ownership
1.61%
Form type
SCHEDULE 13G/A
Date filed
8/14/2025, 11:18 AM
Date of event
Jun 30, 2025
Previous filing
May 13, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Bleichroeder LP 1.61% 41.7K 41.7K 0 Andrew Gundlach Andrew Gundlach, President and CEO
Bleichroeder Holdings LLC 1.61% 41.7K 41.7K 0 Andrew Gundlach Andrew Gundlach, President and CEO
Andrew Gundlach 1.61% 41.7K 41.7K 0 Andrew Gundlach Andrew Gundlach, Individual