Bleichroeder LP - Mar 31, 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
163K shares
Ownership
6.3%
Form type
SCHEDULE 13G/A
Date filed
5/13/2025, 12:28 PM
Date of event
Mar 31, 2025
Previous filing
Mar 24, 2025
Next filing
Aug 14, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Bleichroeder LP 6.3% 163K 163K 0 Andrew Gundlach Andrew Gundlach, President and CEO
Bleichroeder Holdings LLC 6.3% 163K 163K 0 Andrew Gundlach Andrew Gundlach, President and CEO
Andrew Gundlach 6.3% 163K 163K 0 Andrew Gundlach Andrew Gundlach, Individual