Bleichroeder LP - 31 Mar 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
2,587,810 shares
Disclosed Ownership
163,032 shares
Ownership
6.3%
Form type
SCHEDULE 13G/A
Filing time
13 May 2025, 12:28:45 UTC
Date of event
31 Mar 2025
Previous filing
24 Mar 2025
Next filing
14 Aug 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% 163,032 163,032 0 Andrew Gundlach Andrew Gundlach, President and CEO
Bleichroeder Holdings LLC 6.3% 163,032 163,032 0 Andrew Gundlach Andrew Gundlach, President and CEO
Andrew Gundlach 6.3% 163,032 163,032 0 Andrew Gundlach Andrew Gundlach, Individual